Research Methodology Assignment Example | Topics and Well Written Essays - 1000 words

Research Methodology - Assignment Example The ultimate goal is to bring the reader up to date with current literature on a topic and forms the basis for another goal, such as the justification for future research in the area. Therefore the encyclopedia argues that a good literature review is characterized by: a logical flow of ideas; current and relevant references with consistent, appropriate referencing style; proper use of terminology; and an unbiased and comprehensive view of the previous research on the topic. According to Cooper (Guide For Literature Reviewy,1988) "a literature review uses as its database reports of primary or original scholarship, and does not report new primary scholarship itself. The primary reports used in the literature may be verbal, but in the vast majority of cases reports are written documents. The types of scholarship may be empirical, theoretical, critical/analytic, or methodological in nature. Second a literature review seeks to describe summaries, evaluate, clarify and/or integrate the content of primary reports". Introduction: The common idea regarding my dissertation compilation is the collection of data, their comparative study, rationality of the forwarded arguments, and a broader analysis of the facts in empirical evidences via the scientific investigation. This Research Methodology also refers to the hypothetical assumptions that underlie a particular study in the area of respiratory care with a special reference to teenagers presented in APA style within generally acceptable epistemological views. The project work, apart from stylistic and evident aspects it would be methodologically diverse using exclusively qualitative methods. An attempt will seriously follow to match the methods and the approach in finding out the solutions while addressing the issues. Validity: In order to answer the research questions keeping the purpose of the study intact, a serious attempt has been designated for a methodical approach considering the validity of the derived information. Only up to date findings are under consideration that is relevant to current practices and are active in clinical decision making. All the findings in the intensive reading avoid every kind of plagiarism. History: Despite the fact there could be new guidelines there would be no chance of alteration of research groundings. My study will find out both medical approach and other value base prevention of asthma among the adolescents in managing the adherence. Adequate empirical evidences will be collected so that no conclusion any threat to the validity of their publication. Target Population: Being my proposed work a literature review it involves extensive reading to compare, collate and reach into solid conclusion. My project would be structured as the following step by step presentation while finding out facts of the adolescents that are victimized of asthmatic ailment from the minute reading of factual reports. Generalisability: The objective of my research would be to find out the situations that lead the sufferings and their possible remedies recommended by the experts in

The Slumdog Millionaire is a novel that is extremely close to reality Essay

The Slumdog Millionaire is a novel that is extremely close to reality as it represents many aspects of the real Indian society w - Essay Example No one could have imagined that this poor waiter would actually be able to correctly answer all the questions on the show and become the rightful winner of the amount of one billion. Ram answers all the twelve questions and this comes as a surprise to the producers of the show as Ram comes from an uneducated and underprivileged class with no access to materials that could provide him with such skills to answer these knowledgeable questions. The producers of the show are shocked and they are unwilling to accept this surprise owing to the unavailability of money. They resort to wrong means and hand over Ram to the police claiming that he has cheated and won the show. A lawyer comes to the rescue of Ram and helps proving the fact that Ram had not opted for wrong means to win the show. It is to the lawyer that Ram narrates the story of his life and the happenings in the slums where he lived. He told her of how he gained the knowledge to answer the questions that were put up in the show ( Swarup 2008). The author utilizes the occurrences of the life of Ram to present a very close picture to the readers of the Indian society. The novel is a shadow of the happenings and injustices that prevail in India. The novel is close to reality and explains the high poverty levels that persist in the country along with child abuse and beggary that is still a part of the Indian society. ... He explains the life in the slum in the following words when he is being arrested and taken by the police, â€Å"My departure from Asia’s biggest slum would make no difference to their lives. There would be the same queue for water in the morning, the same daily struggle to make it to the seven-thirty local in time.† His words are very true to reality as this slum has been marked to be an area which has stayed at its place for about 4 decades. The slum is home to 6.5 million people who live in a ratio of approximately 18000 people per acre. This indicates the cramming and lack of space for the people to live. The area does not have proper provision of electricity and it also lacks proper water supply. Slumdog Millionaire tries to indicate these conditions of despair that still persist in India in an era of the twenty first century when man has moved ahead to acquire technological breakthroughs that were beyond human consideration. It has been seen that there has been a great surge in the people residing in slums from the period of 1981 to 2001 in India. The number of people in slums has increased from 27.9 million to 61.8 million. This clearly highlights the rising poverty in the country and the novel presents this with the accounts provided by Ram about his life in the slum (Jacobson 2007; Page 2007; Vikas 2008). Child abuse and abduction of children is also a major issue in India. Children are kidnapped by beggar mafias that persist in India and work in an organized fashion to keep their business working. Ram presents with his account of falling into the hands of these abductors who try to force him into this profession. He explains the brutalities that

Digital modulation and demodulation

Digital modulation and demodulation Chapter 1 Digital Communications 1.0 Digital Communication 1.1 Introduction Communication Process: When we think of communication, we usually think of people talking or listening to each other. This may happen face to face, or it may occur through the assistance of a telephone, radio, or television. Basically, communication is the transfer of information. Life In our modern, complex world depends more and more on the transfer of information. The increasing dependency on the transfer of information has stimulated the growth of more and more communication systems. This surge in communication and communication systems has been referred to as a technological revolution. This shows understand the transfer of information in a communication system The communication system will consist of at least the three parts shown. The channel can be as simple as the air that carries the sound of your voice, or as complex as the satellite network required to carry a television program around the world. The most common problem encountered by the communication process is interference. Interference is any force that disrupts or distorts the information or message while it is being channeled. It could be noise, as in the case of normal conversation, or atmospheric weather changes, as In the case of radio or television The biggest cause of interference, however, is a simple misinterpretation of the intended message. Cultural, economic, and political diversities allow people to receive the same message but interpret it differently. Communication Systems: Communication system is a combination of processes and hardware used to accomplish the transfer of Information (communication). A system is a group of interrelated parts. We find that there are systems all around us. In nature, we can also find examples of systems that have been created by people. An automobile, a washing machine, and an electric drill are examples. 1.2 TYPES OF COMMUNICATION: Based on the requirements, the communications can be of different types: Point-to-point communication: In this type, communication takes place between two end points. For instance, in the case of voice communication using telephones, there is one calling party and one called party. Hence the communication is point-to-point. Point-to-multipoint communication: In this type of communication, there is one sender and multiple recipients. For example, in voice conferencing, one person will be talking but many others can listen. The message from the sender has to be multicast to many others. Broadcasting: In a broadcasting system, there is a central location from which information is sent to many recipients, as in the case of audio or video broadcasting. In a broadcasting system, the listeners are passive, and there is no reverse communication path. In simplex communication, the communication is one-way only. In half-duplex communication, communication is both ways, but only in one direction at a time. In full-duplex communication, communication is in both directions simultaneously. Simplex communication: In simplex communication, communication is possible only in one direction. There is one sender and one receiver; the sender and receiver cannot change roles. Half-duplex communication: Half-duplex communication is possible in both directions between two entities (computers or persons), but one at a time. A walkie-talkie uses this approach. The person who wants to talk presses a talk button on his handset to start talking, and the other persons handset will be in receiving mode. When the sender finishes, he terminates it with an over message. The other person can press the talk button and start talking. These types of systems require limited channel bandwidth, so they are low cost systems. Full-duplex communication: In a full-duplex communication system, the two parties-the caller and the called-can communicate simultaneously, as in a telephone system. However, note that the communication system allows simultaneous transmission of data, but when two persons talk simultaneously, there is no effective communication! The ability of the communication system to transport data in both directions defines the system as full-duplex. 1.3 ANALOG VERSUS DIGITAL TRANSMISSION: In analog communication, the signal, whose amplitude varies continuously, is transmitted over the medium. Reproducing the analog signal at the receiving end is very difficult due to transmission impairments. Hence, analog communication systems are badly affected by noise. In a digital communication system, 1s and 0s are transmitted as voltage pulses. So, even if the pulse is distorted due to noise, it is not very difficult to detect the pulses at the receiving end. Hence, digital communication is much more immune to noise as compared to analog communication. 1.4 Digital Modulation: Firstly, what do we mean by digital modulation? Typically the objective of a digital communication system is to transport digital data between two or more nodes. In radio communications this is usually achieved by adjusting a physical characteristic of a sinusoidal carrier, the frequency, phase, amplitude or a combination thereof. This is performed in real systems with a modulator at the transmitting end to impose the physical change to the carrier and a demodulator at the receiving end to detect the resultant modulation on reception. * Modulation is the process of varying some characteristic of a periodic wave with an external signal. * Modulation is utilized to send an information bearing signal over long distances. * Radio communication superimposes this information bearing signal onto a carrier signal. * These high frequency carrier signals can be transmitted over the air easily and are capable of traveling long distances. * The characteristics (amplitude, frequency, or phase) of the carrier signal are varied in accordance with the information bearing signal. * In the field of communication engineering, the information bearing signal is also known as the modulating signal. * The modulating signal is a slowly varying signal as opposed to the rapidly varying carrier frequency. The principal of a digital communication system is that during a finite interval of time, it sends a waveform from a finite set of possible waveforms, in contrast to an analog communication system, which sends a waveform from an infinite variety of waveform shapes, with theoretically infinite resolution. In a DCS (digital communication system), the objective of the receiver is not to reproduce a transmitted waveform with precision. The objective is to determine from a noise-perturbed signal which waveform from the finite set of waveforms was sent by the transmitter. Why Digital?  · The primary advantage is the ease with which digital signals, compared with analog signals, is regenerated. The shape of the waveform is affected by two basic mechanisms. As all transmission lines and circuits have some non-ideal frequency transfer function, there is a distorting effect on the ideal pulse. Unwanted electrical noise or other interference further distorts the pulse waveform. Both of these mechanisms cause the pulse shape to degrade. * With digital techniques, extremely low error rates producing high signal fidelity are possible through error detection and correction but similar procedures are not available with analog. * Digital circuits are more reliable and can be reproduced at a lower cost than analog circuits. * Digital hardware lends itself to more flexible implementation than analog circuits. * The combination of digital signals using Time Division Multiplexing (TDM) is simpler than combining analog signals using Frequency Division Multiplexing (FDM). Metrics for Digital Modulation à ¢Ã¢â€š ¬Ã‚ ¢ Power Efficiency Ability of a modulation technique to preserve the fidelity of the digital message at low power levels Designer can increase noise immunity by increasing signal power Power efficiency is a measure of how much signal power should be increased to achieve a particular BER for a given modulation scheme Signal energy per bit / noise power spectral density: Eb / N0 à ¢Ã¢â€š ¬Ã‚ ¢ Bandwidth Efficiency Ability to accommodate data within a limited bandwidth Tradeoff between data rate and pulse width Throughput data rate per hertz: R/B bps per Hz à ¢Ã¢â€š ¬Ã‚ ¢ Shannon Limit: Channel capacity / bandwidth C/B = log2(1 + S/N) Disadvantages of Digital Systems * Digital systems tend to be very signal processing intensive compared with analog. * Digital systems need to allocate a significant share of their resources to the task of synchronization at various levels. With analog signals synchronization is accomplished more easily. * One disadvantage of digital communication system is non-graceful degradation. When the SNR drops below a certain threshold, the quality of service can change form very good to very poor. Most analog systems degrade more gracefully. Formatting The goal of the first essential processing step, formatting is to ensure that the source signal is compatible with digital processing. Transmit formatting is a transformation from source information to digital symbols. When data compression in addition to formatting is employed, the process is termed source coding. The digital messages are considered to be in the logical format of binary 1s and 0s until they are transformed by pulse modulation into base band (pulse) waveforms. Such waveforms are then transmitted over a cable. No channel can be used for the transmission of binary digits without first transforming the digits to waveforms that are compatible with the channel. For base band channels, compatible waveforms are pulses. The conversion from a bit of streams to a sequence of pulse waveforms takes place in the block labeled, modulator. The output of a modulator is typically a sequence of pulses with characteristics that correspond to the digits being sent. After transmission through the channel the pulse waveforms are recovered (demodulated) and detected to produce an estimate of the transmitted digits. Formatting in a digital Communication System Symbols When digitally transmitted, the characters are first encoded into a sequence of bits, called a bit stream or base band signal. Group of K bits can then be combined to form new digits, or symbols, from a finite or alphabet of M = 2^K such symbols. A system using a symbol set size of M is referred to as M-array system. Waveform Representation of Binary Digits Digits are just abstractions way to describe the message information. Thus we need something physical that will represent or carry the digits. Thus binary digits are represented with electrical pulses in order to transmit them through a base band channel. At the receiver, a determination must be made regarding the shape of pulse. The likelihood of correctly detecting the pulse is a function of the received signal energy (or area under the pulse). PCM Waveform Types When pulse modulation is applied to a binary symbol, the resulting binary waveform is called a PCM waveform. There are several types of PCM waveforms. These waveforms are often called line codes. When pulse modulation is applied to non-binary symbol, the resulting waveform is called an M-ary pulse modulation waveform. The PCM waveforms fall into the following four groups. 1) Non return to zero (NRZ) 2) Return to zero (RZ) 3) Phase encoded ) Multilevel binary The NRZ group is probably the most commonly used PCM waveform. In choosing a waveform for a particular application, some of the parameters worth examining are 1) DC component 2) Self clocking 3) Error detection ) Bandwidth compression 5) Differential encoding 6) Noise immunity The most common criteria used for comparing PCM waveforms and for selecting one waveform type from many available are 1) Spectral characteristics 2) Bit synchronization capabilities 3) Error detection capabilities ) Interference 5) Noise immunity 6) Cost and complexity of implementation Bits per PCM Word and Bits per Symbol Each analog sample is transformed into a PCM word up to group of bits. The number of quantization levels allowed for each sample can describe the PCM word size; this is identical to the number of values that the PCM word can assume. We use L=2^l Where L is the number of quantization levels in PCM word, l is the number of bits needed to represent those levels. M-ARY Pulse Modulation Waveforms There are three basic ways to modulate information onto a sequence of pulses; we can vary the pulses amplitude, position, or duration. This leads to the names 1) PAM (pulse amplitude modulation) 2) PPM (pulse position modulation) 3) PDM/PWM (pulse duration modulation/ pulse width modulation) When information samples without any quantization are modulated on to the pulses, the resulting pulse modulation can be called analog pulse modulation. When the information samples are first quantized, yielding symbols from an M-ary alphabet set, and the modulation on to pulses, the resulting pulse modulation is digital and we refer to it as M-ary pulse modulation. Base-band modulation with pulses has analogous counterparts in the area of band-pass modulation. PAM is similar to amplitude modulation, while PPM and PDM are similar to phase and frequency modulation respectively. Spectral Density The spectral density of a signal characterizes the distribution of the signals energy or power in the frequency domain. Energy Spectral Density We can relate the energy of a signal expressed in time domain to the energy expressed in frequency domain as: à ¢Ã‹â€ Ã… ¾ Ex = à ¢Ã‹â€ Ã‚ « x ²(t) dt -à ¢Ã‹â€ Ã… ¾ à ¢Ã‹â€ Ã… ¾ = à ¢Ã‹â€ Ã‚ « |X (f) | ² df -à ¢Ã‹â€ Ã… ¾ Where X (f) is the Fourier transform of the non periodic signal x (t). Let à Ã‹â€  (t) = |X (f) | ² à ¢Ã‹â€ Ã… ¾ Ex = 2 à ¢Ã‹â€ Ã‚ « à Ã‹â€ x (f) df -à ¢Ã‹â€ Ã… ¾ Power Spectral Density The power spectral density function Gx (t) of the periodic signal x (t) is real, even and nonnegative function of frequency that gives the distribution of the power of x (t) in the frequency domain. à ¢Ã‹â€ Ã… ¾ Gx (t) = à ¢Ã‹â€ Ã¢â‚¬Ëœ |Cn| ² à ¢Ã‹â€ Ã‚ «(f-nfo) n =-à ¢Ã‹â€ Ã… ¾ PSD of a periodic signal is a discrete function of frequency. à ¢Ã‹â€ Ã… ¾ Px = à ¢Ã‹â€ Ã‚ « Gx (t) df -à ¢Ã‹â€ Ã… ¾ à ¢Ã‹â€ Ã… ¾ = 2 à ¢Ã‹â€ Ã‚ «Gx (F) df 0 If x (t) is a non-periodic signal it cannot be expressed by a Fourier series, and if it is a non-periodic power signal (having infinite energy) it may not have a Fourier transform. However we still express the PSD of such signals in a limiting sense. Chapter 2 Modulation and Demodulation 2.0 Modulation and Demodulation Since the early days of electronics, as advances in technology were taking place, the boundaries of both local and global communication began eroding, resulting in a world that is smaller and hence more easily accessible for the sharing of knowledge and information. The pioneering work by Bell and Marconi formed the cornerstone of the information age that exists today and paved the way for the future of telecommunications. Traditionally, local communication was done over wires, as this presented a cost-effective way of ensuring a reliable transfer of information. For long-distance communications, transmission of information over radio waves was needed. Although this was convenient from a hardware standpoint, radio-waves transmission raised doubts over the corruption of the information and was often dependent on high-power transmitters to overcome weather conditions, large buildings, and interference from other sources of electromagnetic. The various modulation techniques offered different solutions in terms of cost-effectiveness and quality of received signals but until recently were still largely analog. Frequency modulation and phase modulation presented certain immunity to noise, whereas amplitude modulation was simpler to demodulate. However, more recently with the advent of low-cost microcontrollers and the introduction of domestic mobile telephones and satellite communications, digital modulation has gained in popularity. With digital modulation techniques come all the advantages that traditional microprocessor circuits have over their analog counterparts. Any shortfalls in the communications link can be eradicated using software. Information can now be encrypted, error correction can ensure more confidence in received data, and the use of DSP can reduce the limited bandwidth allocated to each service. As with traditional analog systems, digital modulation can use amplitude, frequency, or phase modulation with different advantages. As frequency and phase modulation techniques offer more immunity to noise, they are the preferred scheme for the majority of services in use today and will be discussed in detail below 2.1 Digital Frequency Modulation: A simple variation from traditional analog frequency modulation can be implemented by applying a digital signal to the modulation input. Thus, the output takes the form of a sine wave at two distinct frequencies. To demodulate this waveform, it is a simple matter of passing the signal through two filters and translating the resultant back into logic levels. Traditionally, this form of modulation has been called frequency-shift keying (FSK). 2.2 Digital Phase Modulation: Spectrally, digital phase modulation, or phase-shift keying, is very similar to frequency modulation. It involves changing the phase of the transmitted waveform instead of the frequency, these finite phase changes representing digital data. In its simplest form, a phase-modulated waveform can be generated by using the digital data to switch between two signals of equal frequency but opposing phase. If the resultant waveform is multiplied by a sine wave of equal frequency, two components are generated: one cosine waveform of double the received frequency and one frequency-independent term whose amplitude is proportional to the cosine of the phase shift. Thus, filtering out the higher-frequency term yields the original modulating data prior to transmission. * Modulate and demodulate/detect blocks together are called a modem. * The frequency down conversion is performed in the front end of the demodulator. * Only formatting, modulation, demodulation/detection and synchronization are essential for a digital communication system. * FORMATTING transforms the source information into bits. * From this point up to pulse modulation block, the information remains in the form of a bit stream. * Modulation is the process by which message symbols or channel symbols are converted to waveforms that are compatible with the requirements imposed by transmission channel. Pulse modulation is an essential step because each symbol to be transmitted must first be transformed from a binary representation to a base band waveform. * When pulse modulation is applied to binary symbols, the resulting binary waveform is called a PCM waveform. When pulse modulation is applied to non-binary symbols, the resulting waveform is called an M-ary pulse modulation waveform. * Band pass modulation is required whenever the transmission medium will not support the propagation of pulse like waveforms. * The term band pass is used to indicate that the base band waveform gi (t) is frequency translated by a carrier wave to a frequency that is much larger than the spectral content of gi (t). * Equalization can be described as a filtering option that is used in or after the demodulator to reserve any degrading effects on the signal that were caused by the channel. An equalizer is implemented to compensate for any signal distortion caused by a no ideal hi(t) * Demodulation is defined as a recovery of a waveform (band pass pulse) and detection is defined as decision-making regarding the digital meaning of that waveform. 2.3 Linear Modulation Techniques * Digital modulation techniques may be broadly classified as linear and non-linear. In linear modulation techniques, the amplitude to the modulation signal S (t) varies linearly with the modulating digital signal m (t). * Linear modulation techniques are bandwidth efficient. * In a linear modulation technique, the transmitted signal S (t) can be expressed as: S (t) = Re [Am (t) exp (j2pfct)] = A [mr(t)cos(2pfct) mI(t)sin(2pfct)] Where A is the amplitude fc is the carrier frequency m (t) = mr(t) + mI(t) is a complex envelope representation of the modulated signal which is in general complex form. * From the equations above, it is clear that the amplitude of the carrier varies linearly with the modulating signal. * Linear modulation schemes, in general do not have a constant envelope. Linear modulation schemes have very good spectral efficiency. Normalized Radian Frequency Sinusoidal waveforms are of the form: X (t) =Acos (wt+f) - (1) If we sample this waveform, we obtain X[n] =x (nTs) =Acos (wnTs+f) =Acos (wn+f) (2) Where we have defined w to be Normalized Radian Frequency: w=wTs The Signal in (2) is a discrete time cosine signal, and w is the discrete time radian frequency. w has been normalized by the sampling period. w has the units of radians/second, w=wTs has the units of radians; i.e. wis a dimensionless quantity. This is entirely consistent with the fact that the index n in x[n] is a dimensionless. Once the samples are taken from x (t), the time scale information is lost. The discrete time signal is just a sequence of numbers, and these numbers carry no information about the sampling period, which is the information required to reconstruct the time scale. Thus an infinite number of continuous time sinusoidal signals can be transformed into the same discrete time sinusoid by sampling. All we need to is to change the sampling period with changes in frequency of the continuous time sinusoid. 2.4 Baseband Transmission Baseband Demodulation/Detection  · The filtering at the transmitter and the channel typically cause the received pulse sequence to suffer from ISI (Inter Symbol Interference), thus the signal is not quiet ready for sampling and detection.  · The goal of the demodulator is to recover the pulse with best possible signal to noise ratio (SNR), free of any ISI.  · Equalization is a technique used to help accomplish this goal. Every type of communication channel does not require the equalization process. However equalization process embodies a sophisticated set of signal processing techniques, making it possible to compensate for channel induced interference.  · A received band pass waveform is first transformed to a base band waveform before the final detection step takes place.  · For liner systems, the mathematics of detection is unaffected by a shift in frequency. * According to the equivalence theorem, all linear signal-processing simulations can take place at base band (which is preferred for simplicity) with the same result as at band pass. Thus the performance of most digital communication systems will often be described and analyzed as if the transmission channel is a base band channel. Chapter 3 p/4 Quadrature 3.0 p/4 Quadrature Phase Shift Keying (p/4 QPSK) 3.1 Linear Modulation Techniques * Digital modulation techniques may be broadly classified as linear and non-linear. In linear modulation techniques, the amplitude to the modulation signal S (t) varies linearly with the modulating digital signal m (t). * Linear modulation techniques are bandwidth efficient. * In a linear modulation technique, the transmitted signal S (t) can be expressed as: S (t) = Re [Am (t) exp (j2pfct)] = A [mr(t)cos(2pfct) mI(t)sin(2pfct)] Where A is the amplitude fc is the carrier frequency m (t) = mr(t) + mI(t) is a complex envelope representation of the modulated signal which is in general complex form. * From the equations above, it is clear that the amplitude of the carrier varies linearly with the modulating signal. * Linear modulation schemes, in general do not have a constant envelope. Linear modulation schemes have very good spectral efficiency. There are three major classes of digital modulation techniques used for transmission of digitally represented data: * Amplitude-shift keying (ASK) * Frequency-shift keying (FSK) * Phase-shift keying (PSK) All convey data by changing some aspect of a base signal, the carrier wave, (usually a sinusoid) in response to a data signal. In the case of PSK, the phase is changed to represent the data signal. There are two fundamental ways of utilizing the phase of a signal in this way: * By viewing the phase itself as conveying the information, in which case the demodulator must have a reference signal to compare the received signals phase against; or * By viewing the change in the phase as conveying information differential schemes, some of which do not need a reference carrier (to a certain extent). A convenient way to represent PSK schemes is on a constellation diagram. This shows the points in the Argand plane where, in this context, the real and imaginary axes are termed the in-phase and quadrature axes respectively due to their 90 ° separation. Such a representation on perpendicular axes lends itself to straightforward implementation. The amplitude of each point along the in-phase axis is used to modulate a cosine (or sine) wave and the amplitude along the quadrature axis to modulate a sine (or cosine) wave. In PSK, the constellation points chosen are usually positioned with uniform angular spacing around a circle. This gives maximum phase-separation between adjacent points and thus the best immunity to corruption. They are positioned on a circle so that they can all be transmitted with the same energy. In this way, the moduli of the complex numbers they represent will be the same and thus so will the amplitudes needed for the cosine and sine waves. Two common examples are binary phase-shift keying (BPSK) which uses two phases, and quadrature phase-shift keying (QPSK) which uses four phases, although any number of phases may be used. Since the data to be conveyed are usually binary, the PSK scheme is usually designed with the number of constellation points being a power of 2. 3.2 Amplitude Shift Keying (ASK) Amplitude shift keying ASK in the context of digital communications is a modulation process, which imparts to a sinusoid two or more discrete amplitude levels. These are related to the number of levels adopted by the digital message. For a binary message sequence there are two levels, one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid. In Amplitude Shift Keying the Amplitude varies whereas the phase and frequency remains the same as shown in following . One of the disadvantages of ASK, compared with FSK and PSK, for example, is that it has not got a constant envelope. This makes its processing (eg, power amplification) more difficult, since linearity becomes an important factor. However, it does make for ease of demodulation with an envelope detector. Thus demodulation is a two-stage process: à ¥ Recovery of the band limited bit stream à ¥ Regeneration of the binary bit stream 3.3 Frequency-shift keying (FSK) Frequency-shift keying (FSK) is a method of transmitting digital signals. The two binary states, logic 0 (low) and 1 (high), are each represented by an analog waveform. Logic 0 is represented by a wave at a specific frequency, and logic 1 is represented by a wave at a different frequency. In frequency Shift Keying the frequency varies whereas the phase and amplitude remains the same. Phase shift keying (PSK) Phase Shift Keying (PSK) was developed during the early days of the deep-space program. PSK is now widely used in both military and commercial communication systems. In phase shift Keying the phase of the transmitted signal varies whereas the amplitude and frequency remains the same. The general expression for the PSK is as Where, ji(t) = the phase term will have M discrete values, given by, ji(t) = 2pi /M 3.4 Binary PSK In binary phase shift keying we have two bits represented by the following waveforms; S0(t) = A cos (wt) represents binary 0 S1(t) = A cos (wt + p) represents binary 1 For M-array PSK, M different phases are required, and every n (where M=2n) bits of the binary bit stream are coded as one signal that is transmitted as A sin (wt + qj) where j=1,.., M 3.5 Quadra phase-Shift Modulation Taking the above concept of PSK a stage further, it can be assumed that the number of phase shifts is not limited to only two states. The transmitted carrier can undergo any number of phase changes and, by multiplying the received signal by a sine wave of equal frequency, will demodulate the phase shifts into frequency-independent voltage levels. This is indeed the case in quadraphase-shift keying (QPSK). With QPSK, the carrier undergoes four changes in phase (four symbols) and can thus represent 2 binary bits of data per symbol. Although this may seem insignificant initially, a modulation scheme has now been supposed that enables a carrier to transmit 2 bits of information instead of 1, thus effectively doubling the bandwidth of the carrier Eulers relations state the following: Now consider multiplying two sine waves together, thus From Equation 1, it can be seen that multiplying two sine waves together (one sine being the incoming signal, the other being the local oscillator at the receiver mixer) results in an output frequency double that of the input (at half the amplitude) superimposed on a dc offset of half the input amplitude. Similarly, multiplying by gives which gives an output frequency double that of the input, with no dc offset. It is now fair to make the assumption that multiplying by any phase-shifted sine wave yields a demodulated waveform with an output frequency double that of the input frequency, wh

Drugs Essay -- essays research papers

Drugs   Ã‚  Ã‚  Ã‚  Ã‚  Drugs have always been a big part of our society. Many issues arise with whether or not some of them should be legalized for medication purposes or if they all should just be kept as illegal. Drugs are a very interesting topic to learn about and discuss. There is so many things that people don’t know and maybe they should. Not everyone is aware of all the risks or what can happen to you if you get caught with them. If you’re ready to hear about five illegal drugs, then I’m ready to share what I have found out about them.   Ã‚  Ã‚  Ã‚  Ã‚  Marijuana, also known as: â€Å"cannabis, pot, weed, herb, green, Mary Jane, joints, bong toke, and reefer† (Drug Use, www.druguse.com/definitions.html), is probably one of the most controversial drugs. People don’t know if they want to legalize it to help cancer patients or if they want to keep it illegal so that it doesn't get abused by other people. Marijuana is classified as a â€Å"class B drug. It is illegal to have, sell, or give away. The maximum sentences you can receive in a magistrates court is 3 months in jail and a $500 fine† (Illegal, www.impington.cambs.sch.uk/work/illegal.html). Also if you are caught you will have a record and it will keep you from getting jobs like a teacher and working in a bank, so watch out.   Ã‚  Ã‚  Ã‚  Ã‚  Most of the time marijuana is smoked. The users like to mix it with tobacco and roll it into a cigarette. After smoking it, it will leave a sweet herbal smell behind, which is hard to describe but easily recognizable (Illegal, www.impington.cambs.sch.uk/work/illegal.html). Not only can marijuana be smoked it can also be eaten or inhaled. Any way you do it you still get the same effects.   Ã‚  Ã‚  Ã‚  Ã‚  The only things that will change the effects you will receive are according to your mood or the atmosphere in which it is smoked. A lot of the people will become relaxed, but then you have those who will become very giggly. Smoking marijuana can also cause you to get the munchies, so you need to be prepared to eat just about anything. Many times the people who smoke marijuana become lazy and seem to put things off; they also get a loss in memory. The biggest danger comes from the actual smoking. â€Å"Like tobacco, marijuana has a high tar factor, so smoking it can cause bronchitis and cancer† (Illegal, www.impington.cambs... ...r writhe on the floor, terrorized by grisly visions, or imagine himself so indestructible that he walks into a moving car† (Modell and Lansing, 42). When on LSD many people experience a â€Å"bad trip†. When having a trip you can become very frightened and have panic attacks and feel anxious. Sometimes they forget it is the drug and they then think that they are going mad. â€Å"People don't usually get dependent on LSD, but someone who does use too much too often can feel out of touch with the real world† (Illegal, www.impington.cambs.sch.uk/work/illegal.html).   Ã‚  Ã‚  Ã‚  Ã‚  So, like I stated before, drugs are a very interesting topic to learn about. I think that anyone that is taking drugs or considering using drugs should really read up about them and I know that they might just change their mind about what they are doing. Drugs are very dangerous and if you want live your life being addicted to them and ruining your body then go right ahead and do that. Damaging my brain and my liver just doesn’t sound very cool to me. All I can say is never do drugs, unless you want to live a life that will always be effected by the drugs you are taking.   Ã‚  Ã‚  Ã‚  Ã‚  

Wrestling

Today anyone that watches professional wrestling knows that it is sport mixed with entertainment. Over the years the sport has become popular worldwide but nowhere more than North America, Europe, and Japan. All the way into the 1920s professional wrestling was very much considered a sport that was real. It was after the 1920s that professional wrestling became associated with what we call fakery, which in other words is theatricals or admitting to fake outcomes. For a while it seemed that because of fakery, competition became low key and its popularity took a deep fall.It was hard for promoters to stand up for a sport that was admittedly not real. There was actually a bigger fight in the back rooms of professional wrestling, where the hosts and promoters wouldn't admit the fakery while all the sponsors knew exactly what was going on. (Professional Wrestling) In today's professional wrestling no one denies the fact that wrestling has predetermined matches, but they also do a great jo b of keeping the outcome a secret. In the 1950s the television opened a lot of doors for a lot of opportunities and professional wrestling was no exception .It was at this point that the face of professional wrestling was changed forever. Now it was being run to adapt to television and its growing viewers. Characters and story lines were being built bigger and better. Pro wrestling has been a form of entertainment for a very long time, and has seen its share of ups and downs, but the storylines that have been used in the WWF have become legendary and something similar to the soap opera of the sporting world. Wrestling began in the early days as a hot television product.Over time, they lost their spot on the air, and became highly regional in nature. Each area of the country had their own â€Å"stable† of wrestlers, and their own championships. Professional wrestling carried on for many years just gaining popularity until 1980 when professional wrestling blew up like nobody wo uld have ever thought. In the 1980’s, a time known as the 1980s â€Å"wrestling boom† represented professional wrestling's greatest period of televised entertainment, reaching widespread popularity among American youth, as well as producing some of its most spectacular characters.In comparison to the declining support of media outlets during the 1960s and 1970s, professional wrestling, notably the emerging World Wrestling Federation, received great exposure through its reappearance on network television. The WWF expanded nationally through the acquisition of talent from competing promotions and, because it was the only company to air televised wrestling nationally; it became the same with the industry, monopolizing the industry and the fan base.The WWF's owner Vince McMahon revolutionized the sport by coining the term â€Å"sports entertainment† to describe his on-screen product, downplaying the still claimed athletic competition in favor of entertaining viewers as well as enhancing its appeal to children. Most notable was the muscular Hulk Hogan, who marked the 1980s with his â€Å"all-American† persona. His sheer size, colorful character, and extravagance made his main events into excellent ratings draws. By 1984, Hulk Hogan's legions of fans and his dominant role in the industry were termed â€Å"Hulkamania. With â€Å"Hulkamania running wild Vince McMahon decided to have a super bowl of wrestling called â€Å"WrestleMania† in 1985. By WrestleMania 3 in 1987, over 93,000 fans showed up for the event. (The McMahons: Vince and Family) On April 1, 1990 WrestleMania VI took place and is recognized as the end of the 1980’s â€Å"wrestling boom†. The event saw the last wrestling appearance of the legendary Andre the Giant, who had become barely mobile in the ring due to his real life condition.One last time Nikolai Volkoff played his standard part as the evil Soviet Russian before turning face and embracing Ameri ca, reflecting the end of the Cold War. The main event not only put the WWF's two greatest good guys against each other, but was intended as the passing of the torch from Hulk Hogan, the star of the 1980s, to The Ultimate Warrior who was extremely popular and considered Hogan's successor. Hogan's clean pin fall loss to the Ultimate Warrior signaled the end of an era.However, the Warrior did not live up to expectations and Hogan lingered on in the WWF for the next three years, winning the title three times more. The fans who were kids in the mid and late 1980's were teens by the 1990's, and many eventually grew bored with the comic book style of wrestling of the 1980's, turning their attention away from their childhood favorites such as Hulk Hogan, Junkyard Dog, and â€Å"Superfly† Jimmy Snuka in favor of newer and grittier wrestlers like The Undertaker, Shawn Michaels, Mr. Perfect, Bret Hart, The Rock, Stone Cold Steve Austin, and Triple H.This started a new attitude era movi ng forward into the 90’s and Vince McMahon took center stage. As the ratings kept soaring McMahon kept getting edgier. The 90s proved to be even bigger with professional wrestling setting all kinds of records when it came to viewership, and finances earned. It seemed that the WWF were the big boys on the block. Protesters claimed that the WWF’s shows were filled with violence, obscenity, and simulated sex. McMahon claims that movies have more sex and violence, and that his shows simply reflect the world at large. The McMahons: Vince and Family) McMahon said that it was his job to entertain, and it was the parent’s job to be responsible for what their children watch.The television ratings also opened many doors in many other ways for numerous professional wrestlers. Such stars as The Rock and Stone Cold Steve Austin moved on from being the top guy in the business to building great movie careers. By 1998 some of the topnotch guys like Stone Cold Steve Austin and B ill Goldberg from the WWF’s predecessor WCW were making over five million dollars a year. Pro Wrestling) Twenty years prior to 1998 professional wrestling wasn’t even worth five million dollars. Next, through wise business deals made by WWE owner Vince McMahon, pro wrestling became primarily run by the WWE. The World Wrestling Federation was easily the richest company, and began to completely dominate television. Their primary competition would be from the WCW, which evolved from Georgia, North Carolina, and the old NWA of the region. Billionaire Ted Turner purchased the WCW, and the Monday night wars began. The WWE had the ever popular Monday Night Raw, and WCW countered with Monday Nitro.Turner began using his cable muscle and money to lure some of the biggest stars in WWF history such as Hulk Hogan, Randy Savage, Bret Hart, and many others. It looked as though the WCW would overtake the WWF as the powerhouse in pro wrestling. Eventually, however, WCW was completely destroyed by poor booking, finances, and leadership. The upstart competitor was buried by the WWE, and they once again stood head and shoulders above the wrestling world. As the professional landscape of wrestling stands today, their are two major players.TNA wrestling has taken on the mantle of battling the giant WWE, though they are having less success than their WCW contemporaries. TNA may yet figure it out, but for now the WWE is the only major wrestling organization at the top. Although professional wrestling is a lot different today then it was forty years ago, greats like Gorgeous George and Lou Thesz during the mid 1900’s paved the way for today’s wrestlers to be on television. George and Lou wrestled, and they were glorified as being modern day gladiators who went to war with their enemy.They were seen as a superhero or a role model to kids. Today’s wrestlers although still considered super heroes to kids, now play a different role in being a role model for children. Now being a professional wrestler is like being a rock star. You travel all around the world, you’re seen on television on a weekly basis, and now you even get paid like a rock star. WWE programming is now beamed to 120 countries and translated into 11 languages. (Professional Wrestling) Wrestling today is so different from the traditional roots of professional wrestling, but maybe in a good way.The wrestling world has evolved in a way were the WWE’s show Monday Night Raw is now the longest running show in television history. Vince McMahon, whether you love him or hate him, he must be doing something right to be known as the man who took professional wrestling into the twenty first century.Work Cited Gerdes, Louise I. Professional Wrestling. San Diego, CA: Greenhaven, 2002. Print. Greenberg, Keith Elliot. Pro Wrestling: from Carnivals to Cable TV. Minneapolis, MN: LernerSports, 2000. Print. Kaelberer, Angie Peterson. The McMahons: Vince McMahon and Famil y. Mankato, MN: Capstone High-Interest, 2004. Print.

Nutrition and Food

Cognitive behaviour is dysfunctional emotions and behaviours caused by damage in the brain affecting part of the brain responsible for memory and all that we learn from birth- how to talk, eat etc. This means that a person with dementia can forget how important it is to eat and drink and may need reminding. They may also lose their sense of hunger and thirst. It can become a problem and put a client’s health at risk. Functional change is losing the ability to remember how to eat using cutlery. Instead, some people find easier to pick up food by hand, so finger food should be provided.This might be a good way to avoid confusion and distress for a client. If a person finds it easier, food should be laid out for a client promoting their dignity. They may have difficulties chewing or swallowing, this can be caused by the mind forgetting how to do something, or making that task become more difficult to perform. Emotional change can be negative emotions about their confused state be cause the individual may not understand that there is something wrong, but behaviour of others may lead them to feeling something is wrong, which often causes stress to the individual with dementia.They may refuse to eat or drink altogether. Poor nutrition can make the symptoms of dementia worse and increase the risk of more frequent infections requiring use of antibiotics. Malnutrition also affects the immune system making it difficult to fight an infection. It’s more likely that as well as dementia, older people are more likely to develop other chronic illnesses and therefore will have specific nutritional needs.Dementia can be effected by other conditions that may prevent the individual from eating or drinking: Health – it is quite often for individuals with dementia to end up with Urinary Tract Infection or UTI for short, and while having a UTI the individuals may get more confused or angry causing them to not wanting to eat. Emotional – quite a few Dementia sufferers end up with depression because of the drastic changes in their life, such as being taken away from your home and your family. Routines and rituals provide important cues that it is time to eat and trigger the familiar actions involved in feeding oneself.Experts suggest a variety of ways to maintain lifelong habits and routines: Identify and respect personal, cultural, and religious food preferences, such as eating tortillas instead of bread, avoiding pork or milk products, and not liking certain kinds of vegetables. If the person has always eaten meals at specific times, continue to serve meals at those times. Serve meals in a consistent, familiar place and way whenever possible. If the family has always said a prayer of thanks before meals, continue to say the prayer.Avoid introducing unfamiliar routines, such as serving breakfast to a person who has never routinely eaten breakfast. It is important to include a variety of food and drink in a person with Dementias’ diet because they need a varied healthy diet to keep them as fit and well as possible but also because they may go off food that they used to love because their taste may change so you will need to offer them alternative foods. They may go off squash and start liking milkshake for example. They may have difficulty chewing or swallowing so they may need to be offered softer foods like scrambled egg.Regular snacks or small meals are better than set mealtimes and make food look and smell appealing. Use different tastes, colours and smells. The aroma of cooking can stimulate someone’s appetite. Help the person drink plenty of fluids throughout the day, dehydration can lead to problems such as increased constipation, confusion, and dizziness. Outcome 2: Mealtime cultures such as having strict meal times and meal sizes, certain number of courses and in certain orders such as starter, main, dessert etc may not agree with the needs of a person with dementia.Their tastes may have cha nged and may not wish to eat the meals set out for them in a particular ‘traditional order'. They may not wish to eat at the same time as everybody else or may wish to eat small amounts more often. By trying to stick to normal meal time cultures, this can be a barrier to the nutritional needs of the individual. The care they receive should be person centred and must fit in with what the individual needs, this should also be true with the meals the person receives. Setting strict regimes could just upset the individual and could result in them refusing to eat or drink altogether.Environmental factors such as being around lots of other diners, loud noises, music or busy restaurants are not ideal for a person with Dementia as they can become easily distracted and overwhelmed by too much information being processed at once. This can be a barrier to them being able to focus on their food and can again result in them getting upset and refusing to eat or drink. Provide food the perso n likes and try not to overload the plate with too much food, small and regular portions often work best. A relaxed, friendly atmosphere with some soft music may help.Use eating and drinking as an opportunity for activity and social stimulation. It is always best to aim for the least stressful solutions. Common sense and a creative approach often help. Use colour to support the person – the colours of the food, plate and table should be different. Avoiding patterned plates is important. Treating everyone as an individual and giving them informed choices are the best person centred approaches. We must try to treat everyone as an individual and respect his or her wishes and preferences. Many people with dementia can make their own choices such as what they like to wear, what they like to eat or drink.If they are unable to make a decision, we can inform them of available choices. They may not be able to communicate or tell us anything sometimes so we need to show them the availa ble options. We may also be aware of their choices such as what do they like to eat or drink by asking the individuals family and friends. Another important thing is observation. By observing, we may make note what they like to eat and drink most or what went well at a particular meal time. We must always offer them options and choices. Clear, easy-to-understand verbal prompting may also be needed.Depending on the person’s language ability, this may mean giving very specific, step-by-step directions, or it may mean offering simple choices, such as â€Å"Do you want peaches or apples? † or â€Å"Would you like cream in your coffee? † Verbal prompts, such as â€Å"Do you think the beans have enough salt? ,† can focus the person’s attention on the food. Sensory cues, especially those involving smell, can let the person know it is time to eat. Smells can trigger the appetite, even the smell of toast can help. People with more advanced Dementia may also need physical prompting to initiate the process of eating or to continue eating.For example, the caregiver might place a finger or hand under the person’s grasped hand on the fork and guide it to the mouth. After getting help with initiating eating, the person may then take over. However, carers should not step in too soon as doing so can diminish the individuals sense of personal control and independence. A person centred approach will improve the well being of an individual with Dementia by making them still feel in control of their lives even though they may feel they are losing control and can build trust between the individual and the carers.

Mean Things Happen essays

Mean Things Happen essays The 1930s were hit by a serious economic disaster called the great depression. This problem ruined the rural economy. The film Mean Things Happen visited the times of the great depression from a social as well as economic standpoint. The movie illustrated how capitalists went to unscrupulous measures to continue with their control over the proletariat class. Social and economic stratification were also issues that were boldly outlined in the film. The films starting focus was on how the hardships of the bourgeoisie class during great depression showed in the faces of the proletariat class. Sharecroppers picked very large loads of cotton for the plantation owners to sell. However, with the crash of the rural economy, cotton prices were extremely low. Not much money was being made so the sharecroppers werent getting paid or were either paid insufficiently. President Roosevelt tried to help the cotton plantations by giving the landlords money based on the size of their farms. This money was supposed to cover farming costs and the tenants wages. Unfortunately, landlords would keep the funds and pay the sharecroppers what they wanted. Even though the tenants were aware that they werent being properly paid, they werent allowed to view the figuring books because it was said to be insulting the landlord. The Southern Tenant Farmer Union, or the STFU, was an organization formed to attain equal rights for sharecroppers. 18 members, 11 white and 7 black men were at the first meeting. By the end of the year there were 1,000 members. The newly formed union wasnt well accepted by the capitalists. Fear of the minority group gaining power caused them to become defensive and more unjust. Murders, beatings, and firings were only a few hardships the union members faced while trying to gain their rights. The Wagner act granted the ...

woman in mans world essays

woman in mans world essays As the only girl among forty male classmates in a Electrical Engineering class my aunt Ana had very uncomfortable feeling, which she never experienced before. She will probably forever remember professors class discussions and questions, for which she has always stayed quiet without participating in discussions or answering the questions, while almost everybody else gave some answers or comments. What would it look like if she gives the wrong answer? Her colleagues could think that Ana is in the wrong place, or moreover, she is just one more girl who is trying to be smart. The same story was repeated every single week. Every time she entered that class, she kept her head down looking at the floor. As the only girl in Engineering class she was ashamed. What am I doing here? she asked herself a hundred times during this class. Ana felt like a stranger in some far, unknown land where people speak a different language. Men are real masters of Engineering classes. It is their world and th eir kingdom. Why is that? Who established this rule? Where are women in that combination? Who represents them? Since the early history and ancient civilizations, woman has played a secondary role, in which she was worth less than a man. Both in the Roman Empire and the old Greek Byzantine the role of a woman in the society, which was created and forced upon them by a man, was that a woman is only good for child rising and to be a housewife. Moreover, in most Asian countries even today, woman is stuck with the same stereotype. Also in the Arab countries, woman has been an inferior second class citizen: she was not allowed to participate in public life, also she could not be seen in any man place such a caf, bar, or mosque. Furthermore, in Africa women is a housekeeper surrounded with her children, waiting for her husband to come home from hunting, to bring foo ...

Air Quality

Air Quality Essay Air Quality Dispersion Today, the air quality aspect of ARL research is by far the dominant theme, but distinctions among the themes remain somewhat vague. For example, the models developed for emergency response purposes are among those used for air quality prediction. The Air Quality and Dispersion theme is one of the strongest ties that binds ARLs components together. ARL is not heavily involved in the pure science of the business. Instead, ARL focusses on the need to assemble integrated understanding and models from all available sources, to develop the capability to predict changes in air quality that will follow changes in emissions, or that will occur as a result of meteorological factors. ARL air quality research extends to studies of atmospheric deposition essentially the coupling between the atmospheric pollutant environment and the surface below. ARL now operates the only research-grade deposition monitoring network in the nation: AIRMoN (the Atmospheric Integrated Resear ch Monitoring Network). Programs. Air Quality and Deposition Modeling Air quality models have demanded this kind of coupling for a considerable time. As a result, there are now well-developed descriptions of PBL processes in use in air quality models. ARL research products are now receiving a wider audience, within the mesoscale modeling community at large. It is recognized that modern models are invariably data assimilative, and that modern monitoring programs require coupled modeling activities for data interpretation. Model development programs are supported by a vigorous physical modeling program, located at Research Triangle Park, NC. ARL operates one of the nations major fluid modeling facilities, at which studies are conducted on the effects of mountains, buildings, and other surface obstacles on atmospheric flow patterns. Integrated Monitoring, and AIRMoN The Atmospheric Integrated Research Monitoring Network is an atmospheric component to the overall national integrated monitoring initiative that is currentl y evolving. AIRMoN has two principal components: wet and dry deposition. ARL presently focuses its research attention on ? the measurement of precipitation chemistry with fine time resolution (AIRMoN-wet), ? the development of systems for measuring deposition, both wet and dry, ? the measurement of dry deposition using micrometeorological methods (AIRMoN-dry), ? the development of techniques for assessing air-surface exchange in areas (such as specific watersheds) where intensive studies are not feasible, and ? the extension of local measurements and knowledge to describe areal average exchange in numerical models. Aerosols and visibility ARL specializes in the geochemical cycling of atmospheric aerosols, particularly the particulate component. Research groups in ARL concentrate on (a) the injection of dust and soil particles into the atmosphere, (b) the transport of particles through the atmosphere, the production of aerosol particles in the air by chemical reactions, (d) the scavenging of airborne particles by clouds and their subsequent deposition in precipitation, (e) the dry deposition of particles as air moves across different landscapes, and (f) the assembly of numerical models. Specific topics include ? the injection of dust and soil particles into the atmosphere, ? the long-range transport of particles through the atmosphere, ? the production of aerosol particles in the air by chemical reactions, ? the scavenging of airborne particles by clouds and their subsequent deposition in precipitation, and ? the dry deposition of particles as air moves across different landscapes. International ARL serves as the leader of the U.S. multi-agency effort to impose formalized and uniform quality assurance programs on the many national air quality and deposition monitoring networks that are operational around the globe. How are ozone concentrations calculated with Hysplit? Ozone is then calculated from the photostationary state equation. The IER solution is used in the operational Hysplit ozone calculation. The pollutant particles are tracked and air concentrations for each species are computed each advection time step following the usual lagrangian approaches. At the conclusion of the advection step the GRS differential equations are solved on the concentration grid (Eulerian solution), and the change of concentration of each pollutant species is applied to the pollutant mass on the particles that contributed concentration to each grid cell. -Eulerian chemistry solution on the grid dc/dt = {Equations 1 7} 1) ROC + hv -* RP + ROC Nitric oxide-ozone titration reacti on 5) RP + RP -* RP k5 = 10200 Sink for nitrogen dioxide to stable gaseous nitrates

Essay Example | Topics and Well Written Essays - 250 words - 140

Essay Example In order for firms to compete globally, it is important for managers to understand the nature of global markets (244). Competition is worldwide, and therefore it is imperative that companies understand the kind of goods and services that can give them a competitive advantage over other global industries. In addition, the productivity of labor can also affect the economic boundaries of firms. For example, industries with limited labor generally concentrate on producing basic commodities, while those with high expertise focus on producing advanced goods and services. Thus, the availability of labor affects the cost of production, which in turn re-defines trade (Samuelson & Marks, 245). In global markets, the prevailing exchange rate is as well important when computing the cost of production, because it ultimately influences the costs of exports and imports (Samuelson & Marks, 246). Another important factor is the competitive market condition. Indeed, one of the aspects managers consider when making decisions is how they can compete within markets. Depending with market environments, they consider factors that can cause barriers to their entry or even affect how they establish their prices. In a competitive market environment, for example, organizations have to consider the number of firms in the market, how prices are established, and if they can have control over them (Samuelson & Marks, 281). Finally, the application of e-commerce and technology are significantly re-defining trade in many areas, particularly cost economies. These methods facilitate customer increase because they have the potentials to reach a large population, and also offer a variety of online services, which ultimately leads to cost savings for the firms (Samuelson & Marks,

Accounting for manager Speech or Presentation Example | Topics and Well Written Essays - 750 words

Accounting for manager - Speech or Presentation Example that, we as a company should have a firm understanding of the cost objects that are prevalent in our current setup, so that we can confidently answer questions asked by the bank’s personnel, and most importantly we need to determine how much capital our expanding operations need. By preparing an internal company budget, we will not only know the underlying cost objects in a process, but also we will know the cost each object is incurring. By knowing these facts we will be in a better position to undertake cost reduction strategies and optimize our capital allocation process. Since these are tough economic times, and we need to be sure that every penny that we are investing in our operations is producing a substantial return, therefore, it is important that we take an initiative to generate an internal company budget. The utility of this internal budget is immense. We can use this internal budget to construct a master budget for the lending bank. In this way, we will be able to send a firm message across to the bank, and show them that we are serious in doing business with them. By presenting them with the nature of our operational costs, we can enchant them with the opportunity to do future business with our company. Most importantly, this effort of ours to compile an internal budget and tailor it for external users has a broader utility that will arise as the company grows. This utility that is being referred to is the need to have well maintained books in order to change the status of the company. Since we are expecting growth in our business operations and scope of our activities, therefore, it is hard to undermine the fact that we will have to go public someday. For this it is important that the company take an initiative to put in place proper systems for tracing costs and allocation of bud get. By installing these systems, we will be in a stronger position to generate true financial statements. And as you must be aware that strong systems of a company play

Effect of the American Revolution on Native American groups Research Paper

Effect of the American Revolution on Native American groups - Research Paper Example The Native Americans had no centralized governance that can unite the whole country. In addition, they also had no laws. With this, Europeans described the Native Americans as barbaric or savage. Although the Native Americans had their own civilization, the Europeans still considered it as something backward as compared to their own civilization. This perspective became the reason of the Europeans to colonize America.2 Parts of America became a colony of the Spanish a year after Columbus’ discovery of it. There had been major changes in America. Since the reasons of Spanish in colonizing other territories included â€Å"glory, gold and God†, the major changes in the American Indians’ lives happened in these areas. In this era, Native Americans first acquired their religion, Catholicism.3 America was rich in resources and this attracted more colonizers, which included French and Dutch people. Also, the colonizers started mixing or forming marriage with the Native Americans.4 All colonizers of America contributed to the development of the nation. Each colonizer has its own perspective of living that has been imparted to the Native Americans. Also, one of the major contributors in civilization of the Americans was the English nation. The English nationals brought Protestantism in America. They also introduced the notion of â€Å"conqueror† to the Americans. Also, they started the slavery of the â€Å"blacks†. The English brought Africans to America and treated them as slaves working in the agricultural sector.5 It can be seen that colonialism greatly affected Americans. From being â€Å"behind† and â€Å"savage†, the Americans acquired religion, improved food system and governance from their colonizers which shaped the identity of the Americans. However, they did not settle as a colony only. America acquired freedom from their colonizers and became a nation. The Americans revolted against their colonizers and strugg led to achieve independence.6 From the revolution, Americans developed their definition of freedom. Americans worked to improve the view of the nation in terms of slavery. America became United States of America after the revolution.7 The development of country was soon observed. There were issues concerning the nation that the leaders started to encounter such as the establishment of the government and different social issues (e.g. gender issues) that started to rise and affect the development of the country. The Americans applied what they learned from the past years of being a colony to their newfound freedom. The building of the nation was much improved, laws were made and disputed. Slavery was reformed and people became more educated. After being colonized, America enlarged the nation’s territory also. Although the slavery had been reformed, it was not enough to eliminate slavery especially in the non-white settlers of United States of America. The people’s belief on their race heightened and expanded outward their territory. The US expanded their territory to the West. The Americans viewed their own race to be more important than that of the people with different skin color. They felt that it was a Divine right to extend their territory and the other

Drucker's Management Style in Industry Application Assignment

Drucker's Management Style in Industry Application - Assignment Example This means that managing without a goal can never guarantee the achievement of results. Managers are therefore admonished to at every point in time, set specific, time-bound and measurable goals that are realistic to achieve. Organises – Because managers work with different people with different talents, they must be on top of the distribution of roles to different people (Thompson and McHugh, 2009). This is what organisation is all about. Motivates and communicates – In the delivery of their duties, motivating subordinates will always ensure that managers spark up an inner will for performance to take place (Arnold, J. et al, 2005). Communication will also ensure that there is adequate understanding of policies and workplace ideas. Measures – There should be yardsticks that should measure the achievement of goals set by managers. It is only when there is a measure that can be evaluation of achievements and failures. Develop people – Though managers will a lways have a task to perform, the major task should be seen as the development of people through distribution of right roles (Bailey, 1983). This is because it is only when people are developed that tasks becomes competed because tasks are always completed by the people. 1.12 Drucker’s Management by Objective framework In order that managers will not at any point in time be too focused on their tasks and forget the actual underlying objectives for which the tasks are being performed, Drucker (1989) came out with the framework of managing by objectives, which came to be known as MBO. The major emphasis that the framework draws is that goal setting is always an important aspect of management. Goal setting is important to management implementation because it sets the tone for the kind of planning that needs to be done and the levels of inputs needed to achieve the set goals (Clegg, Hardy & Nord, 1996). As part of the framework, the need to make team work an important focus of su ccess is treated. This is because managers indeed cannot know what each member on the team is doing but once clear objectives are assigned to each member, managers can be assured that members on the team will work around their objectives to bring about the achievement of set goals (Drucker, 1989). 1.2 Advantages of Drucker’s method to the Fashion Industry The management models, put forth by Drucker, more importantly the five point operation in management has several advantages when applied in the modern day fashion industry. Using Adidas, which is a German multinational corporation as an example, there are a number of ways that the management of the company can be said to have benefited from the application of the five point operation management proposed by Drucker (1989). In this regard, Mr. Herbert Hainer, who is the chairman of Adidas, can be used as a model and example. As far as the setting of objectives is concerned, Adidas is one company that has been praised by analys ts and experts in the management literature as having specific objectives for each day of the company’s existence (Scott, 2013). This is because in line with what Drucker proposes; Mr. Hainer ensures that the company does not only operate on long term goals but on short to medium term objectives that are always crafted around various departments and

Business Law Essay Example | Topics and Well Written Essays - 1500 words - 1

Business Law - Essay Example There has been no clear cut reason for the separation. The division appears to be more of prestige issue and professionally it is becoming an embarrassment to offer the excuse that the barrister performs a specialized or more professional role. Periodical studies highlight issues that throw the explanation of specialized roles of barristers in poor light (Cohen, Professor Harry; p11). Simply put, solicitors form the backbone of U.K.’s legal system. They come in direct contact with the public who come to them for all legal advises from litigation to commercial work. Litigation forms just a small part of the solicitor’s work that involves â€Å"commercial transactions, corporate matters, land, share and other property dealings† (Legal professionals: barristers, solicitors, executives; 1998). In order to become a solicitor, it is necessary to take a one-year Legal Practice Course (LPC). There are over 30 institutions throughout England who offer the LPC. Thereafter, the law student has to obtain a two-years training contract with a solicitors’ firm (The Legal Professions). Professionally, a solicitor must be a member of the Law Society which oversees his training, practice and the Society also takes up complaints made against the solicitor (Legal professionals: barristers, solicitors, executives; 1998). The role of the solicitor came into existence in 1823 when ‘The London Law Institution’ was formed by several prominent barristers. The name of this institution changed to ‘The Law Society’ in 1903. Women and ethnic minorities were not allowed to be members of the Law Society in those days. Now, half of the legal force in the U.K. comprises women (The Law Society, 2010). The closeness of the solicitors to people and corporations and their distinct efficiencies has enabled them to grow and flourish as individuals or firms. Solicitors have the potential to grow

Effect of the American Revolution on Native American groups Research Paper

Effect of the American Revolution on Native American groups - Research Paper Example The Native Americans had no centralized governance that can unite the whole country. In addition, they also had no laws. With this, Europeans described the Native Americans as barbaric or savage. Although the Native Americans had their own civilization, the Europeans still considered it as something backward as compared to their own civilization. This perspective became the reason of the Europeans to colonize America.2 Parts of America became a colony of the Spanish a year after Columbus’ discovery of it. There had been major changes in America. Since the reasons of Spanish in colonizing other territories included â€Å"glory, gold and God†, the major changes in the American Indians’ lives happened in these areas. In this era, Native Americans first acquired their religion, Catholicism.3 America was rich in resources and this attracted more colonizers, which included French and Dutch people. Also, the colonizers started mixing or forming marriage with the Native Americans.4 All colonizers of America contributed to the development of the nation. Each colonizer has its own perspective of living that has been imparted to the Native Americans. Also, one of the major contributors in civilization of the Americans was the English nation. The English nationals brought Protestantism in America. They also introduced the notion of â€Å"conqueror† to the Americans. Also, they started the slavery of the â€Å"blacks†. The English brought Africans to America and treated them as slaves working in the agricultural sector.5 It can be seen that colonialism greatly affected Americans. From being â€Å"behind† and â€Å"savage†, the Americans acquired religion, improved food system and governance from their colonizers which shaped the identity of the Americans. However, they did not settle as a colony only. America acquired freedom from their colonizers and became a nation. The Americans revolted against their colonizers and strugg led to achieve independence.6 From the revolution, Americans developed their definition of freedom. Americans worked to improve the view of the nation in terms of slavery. America became United States of America after the revolution.7 The development of country was soon observed. There were issues concerning the nation that the leaders started to encounter such as the establishment of the government and different social issues (e.g. gender issues) that started to rise and affect the development of the country. The Americans applied what they learned from the past years of being a colony to their newfound freedom. The building of the nation was much improved, laws were made and disputed. Slavery was reformed and people became more educated. After being colonized, America enlarged the nation’s territory also. Although the slavery had been reformed, it was not enough to eliminate slavery especially in the non-white settlers of United States of America. The people’s belief on their race heightened and expanded outward their territory. The US expanded their territory to the West. The Americans viewed their own race to be more important than that of the people with different skin color. They felt that it was a Divine right to extend their territory and the other

Business Law Essay Example | Topics and Well Written Essays - 1500 words - 1

Business Law - Essay Example There has been no clear cut reason for the separation. The division appears to be more of prestige issue and professionally it is becoming an embarrassment to offer the excuse that the barrister performs a specialized or more professional role. Periodical studies highlight issues that throw the explanation of specialized roles of barristers in poor light (Cohen, Professor Harry; p11). Simply put, solicitors form the backbone of U.K.’s legal system. They come in direct contact with the public who come to them for all legal advises from litigation to commercial work. Litigation forms just a small part of the solicitor’s work that involves â€Å"commercial transactions, corporate matters, land, share and other property dealings† (Legal professionals: barristers, solicitors, executives; 1998). In order to become a solicitor, it is necessary to take a one-year Legal Practice Course (LPC). There are over 30 institutions throughout England who offer the LPC. Thereafter, the law student has to obtain a two-years training contract with a solicitors’ firm (The Legal Professions). Professionally, a solicitor must be a member of the Law Society which oversees his training, practice and the Society also takes up complaints made against the solicitor (Legal professionals: barristers, solicitors, executives; 1998). The role of the solicitor came into existence in 1823 when ‘The London Law Institution’ was formed by several prominent barristers. The name of this institution changed to ‘The Law Society’ in 1903. Women and ethnic minorities were not allowed to be members of the Law Society in those days. Now, half of the legal force in the U.K. comprises women (The Law Society, 2010). The closeness of the solicitors to people and corporations and their distinct efficiencies has enabled them to grow and flourish as individuals or firms. Solicitors have the potential to grow

Psychology 285 Week 9 Final Essay Example for Free

Psychology 285 Week 9 Final Essay Everyone has asked at point in their lives; who am I? Everyone will go through great lengths to figure out exactly that answer. Because of that no topic in psychology today is more heavily researched than self (Myers, D.G., 2012). These feelings come about for a number of reasons. We develop a number of feelings for reasons that are related to group dynamics, genetics perhaps, and social influence. There are so many influences on the relationships that we develop. Self-concepts There are so many awesome qualities about me I’m honest, very giving, independent and opinionated; however being opinionated can be a blessing and a curse. Growing up I remember being in trouble so much because of my mouth. I was the type of child that needed to get my point across and I was going to get out whatever it was that I needed to say! My mother told me several times lately that she admires my courage when it comes to saying what’s on my mind; she hated it when I was growing up but she respects it now because she holds back a lot afraid to speak up. Knowing that I am extremely opinionated I have to be careful sometimes about the way that I say things to other people. This is because what I say may be without malicious intent however it could come off that way if it’s not carefully expressed! I am so opinionated that I will solicit my opinion to anyone with being asked to solicit it. Especially when it comes to my little sister; she thinks that I’m being hard on her but I tell her all the time; the day I have nothing to say be worried, I talk because I care! This brings me to being such a giving individual I would give my heart if I was able to continue to live. I have given my last to so many and I expect absolutely nothing in return. I have learned that there is no greater lesson in life than the one of being able to give. I am the type of person who will go through my son, daughter, finance and my own closets just to see what they are no longer wearing to give it away to someone else who can actually use it. I want to set great examples to my children I want them to pay if forward too; but I want them to also know the difference between being a giving person and being an idiot! This brings me to my independence in life. I am such a strong minded person, very level headed so I know what I want and I know exactly what I  need to do to get to where I need to be, by myself! My mother loves the independence in me but she hates the reasoning behind why I’m so independent. That reason would be because I don’t want to end up like her she’s so dependent on my stepfat her that she has absolutely nothing on her own! Her first car came from him; the first time she moved into her own place was because of him, the new house the clothes on her back, the shoes on her feet, down to the food she eats. I don’t want that for myself in any way. My fear is that if I allow someone to do anything in any form for me that they will throw it in my face later. While my mother admires this quality about me my fiancà © hates it so much. He’s constantly fighting me not because he has nothing else to do but because he wants to do more. However along with the fear of having what was done thrown in my face another fear is to allow myself to comply with someone else doing something for me and they aren’t able to later than I feel like I set myself up for failure. This aspect of my life is revolved around issues of trust in my opinion. I know that I have trust issues I am always afraid of being hurt in some way whether it be because I was let down or because my heart was broken. My world is great and everything is exactly the way it should be until someone else tries to help. This is what one would call self-serving bias. Self-serving bias plays an extremely major part of mine and anyone else’s life we would all love to believe we’re a super hero all of the time, but when something goes wrong have you ever you ever seen the super hero take the blame? Never that is the sidekick’s job! The concept of self-serving bias has opened my eyes up to taking more responsibility for my own actions and stop using the actions of others to feel better about a situation that has gone wrong. This is why now I feel that I have an internal locus of control I believe that I am what influence the ripple effect of the events of my life. My actions have reaction weather I like the reactions or not they are still because of me and no one else! Attitudes and feelings Confirmation bias influences the perception of yourself and the people around me because we all want what we believe to be true! Take this for example my mother doesn’t very much care for my fiancà © she doesn’t really have a reason, because he does everything that he is supposed to do and more sure we have an argument here and there but to her it’s abusive. So she says  thing like this; â€Å"See I told you he doesn’t care about anyone but himself, look at how he speaks to you he doesn’t care.† I explain to her that it’s unfair to say that about him especially when things were said in the heat of the moment. Confirmation bias can destroy you because you are always looking for the next thing to support your beliefs. My sister thought that her husband was cheating with my cousin, (this was not true) so everything that my brother in law and cousin did together it was inappropriate and because they were sleeping together. I tried so ma ny times to tell her that they weren’t sleeping with one another but she had it in her head that they were so much that she actually pushed them together (self-fulfilling prophecy). She pushed and pushed so much that the untrue theory became true. I was hurt for her when this happened because these beliefs ended up generating their own confirmation. Behaviors influence attitude in so many ways, each day of my life behaviors influence my attitude. My step brother for example to me his behavior is very perverted is says things about my little sisters that he should not referencing the rear ends and other parts of their bodies as well as mine extremely inappropriate this behavior influences my attitude towards him because I don’t trust him as a result, I don’t want him around any of our sisters, or my infant daughter, I don’t even trust him around my son! My attitude toward him is extremely negative and I hate when he’s around. Another way that behavior affect attitude is through imitating your parents because the attitudes and beliefs of your parents have a strong impact on your life later. The topic of exhibiting the behavior of my parents brings me to gender roles. Our gender roles are defined by our own conceptions of being a male or female. Social influence: In certain situations I am willing to conform to a degree, but I am not willing to conform completely for an entire group to make it easier on the group. I enjoy being an individual I never want to blend in with the crowd I always want to stand out. I know this because at work there are so many groups of people who only want to hang out with that group of people they are all so caught up with who’s doing what and why that they completely lose focus of why we are even at work in the first place. I on the other hand  don’t feel that I have the time for that it’s childish so I am all about my work and nothing else! When our Post Master comes around they will all scrabble to go back to work or act as if they are working so that they won’t get into trouble! A person of authority influences obedience because the authority figure has the power to discipline. The foot in the door technique is one that is used in my profession a lot when the new comers come on to the job a co-worker will began to ask for small favors and those small favors turn into large favors. I have used this technique in new relationships to see just how far I can get him to go for me. I will change in the presence of others depending on who the person is if it’s an elder I won’t swear, if it’s a younger group of my peers I will relax more but it really depends on the group. When working with groups there are always slackers in the group they do the least expecting the same amounts of credit. This is something that I have struggled with in school and in work because it’s completely unfair to the group. This is called being lazy and being lazy is completely unattractive. Factors that attract me to someone are whether or not they are intellectually stimulating to me, smart, fun loving, easy going, handsome, tall, and has a great sense of humor. That’s not to say that what’s attractive to me is attractive to the next person. Just because they are attractive doesn’t mean that everything is going to be great there may be some conflict and in resolving conflict you must talk it out, speaking on your concerns and try using the I exercise saying how you feel as oppose to the blame game because no one will be receptive to that!

A Violation Of Womens Human Rights

A Violation Of Womens Human Rights Violence against women commonly known as gender-based violence refers to violent acts ‎committed against women with the victims gender as a primary motive. ‎Violence against women is very common especially in developing third world countries and even ‎in countries with over suppressed societies for example in many regions of the Middle East. ‎Even in developed and modern nations still today gender- based violence is not totally ‎eliminated and still exists though comparatively the rate is lower than the underdeveloped and/ or ‎developing countries. ‎ It is like a plague that has engulfed and destroyed many homes and families and a situation that ‎needs to be addressed with complete focus as a healthy society produces healthy generations ‎which in turn results in healthy and prosperous nations. For years the problem has never been ‎addressed seriously and so far has ruined families and disturbed the society at large majorly due ‎to lack of awareness among the individuals.‎ The ever increasing day to day mechanical lives and expensive living cost is causing more stress ‎and depression in individuals, the matter instead of being curtailed by various relevant law ‎enforcing agencies, NGOs and concerned state organizations the occurrences of violence ‎incidents against women is on high increase. ‎There is a dire need to find ways to stop this as crises intervention cannot only address and ‎simplify the situation rather more serious steps are needed to curtail the devastating effects that it ‎has on children and families.‎ Every year millions of women are affected world over and majority of cases do not come on ‎record nor handed lawfully and this ignorance results in gradual increase in such unacceptable ‎acts against women. We will all agree here that such violence against women leads to physical ‎and psychological harm both, and at times the psychological scars are impossible to treat thus ‎damaging the personality of the subject woman for life time.‎ If a woman suffers such physical and emotional harm the whole society suffers and the final ‎impact is the suffering of the entire society. Thus this raises serious health concerns and requires ‎immediate action and prevention from violence from those who are the policy makers and various ‎agencies responsible for stopping this violence. ‎ The affected suffers from loss of trust, loss of dignity and a deeply compromised self esteem ‎that needs to be addressed along with factors like housing, economic support, social welfare and ‎legal issues being an integral part of the health promotion strategy. ‎The most common form of violence experienced by women globally is physical violence inflicted ‎by an intimate partner, with women beaten, forced into sex or otherwise abused.‎ In a study conducted by the World Health Organization (WHO) it was found that between 15% ‎and 70% of women experience physical and/ or sexual violence by a partner. ‎ According to a United Nations report at least one out of every three women around the world ‎has been abused some way or the other in her lifetime and that too by someone known to her.‎ According to a WHO report the impact of this gender- based violence on the society is deep and ‎directly burdens the health care services as women suffer serious physical injuries, death, sexually ‎transmitted diseases, miscarriages, acute depression and many other psychological health issues ‎resulting in weak and low physical health. And the states have to bear heavy economical costs in ‎billions per year.‎ A 2003 report by the US Centers for Disease Control and Prevention (CDC) estimates that the ‎costs of intimate partner violence in the United States alone exceed US$5.8 billion per year: ‎US$4.1 billion are for direct medical and health care services, while productivity losses account ‎for nearly US$1.8 billion.‎ We can have an idea of existence of this gender-based violence in various parts of the world ‎from the figures collected by the WHO while carrying out a study in 11 countries and according ‎to this study; ‎ The percentage of women who had been subjected to sexual violence by an intimate partner ‎ranged from 6 per cent in Japan to 59 per cent in Ethiopia. ‎Several global surveys suggest that half of all women who die from homicide are killed by their ‎current or former husbands or partners. ‎In Australia, Canada, Israel, South Africa and the United States, 40 to 70 per cent of female ‎murder victims were killed by their partners, according to the World Health Organization.‎ In Colombia, every sixth day one woman is reportedly killed by her partner or former partner. ‎Psychological or emotional violence by intimate partners is also widespread.‎ Up to 70 per cent of women experience violence in their lifetime, according to country data ‎available.‎Women aged 15-44 are more at risk from rape and domestic violence than from cancer, car ‎accidents, war and malaria, according to World Bank data. ‎ Female genital mutilation (FGM), defined by WHO as the partial or total removal of the external ‎genitalia or other injury to the female genital organs WHO estimates that between 100 to 140 ‎million girls and women have undergone some type of FGM. Most of those affected live in 28 ‎countries in Africa, although there are some in the Middle East and it also happens among ‎immigrant communities in some countries in Western Europe.‎ Rape and dowry related violations are also very common resulting in harassment of brides and ‎also dowry related deaths, particularly in certain parts of India and other southern Asian ‎countries. This violence is exercised not only by the husband but also by the husbands close ‎relatives (mother, brothers, and sisters). ‎ Acid throwing in some Asian countries such as Bangladesh, India, and Pakistan, the disfiguring ‎of women by throwing acid or burning them are forms of violence rooted in gender inequality, ‎but the immediate reason for this is often disputes concerning marriage and dowry. While this is ‎not one of the most prevalent forms of violence against women, its consequences are dire for ‎those women subjected to it. ‎ ‎ Honor killings this is the murder of a woman, usually by a brother, father, or other male family ‎member, because she has allegedly brought shame to her family. This phenomenon is rooted in ‎the notion of male honor and female chastity that prevails in many countries in the Eastern ‎Mediterranean region. It means a mans honor is linked to the perceived sexual purity of the ‎women in his family. If a woman engages in sex outside marriage or even if she is raped, she is ‎thought to disgrace the family honor. In some societies, the only way to cleanse the family honor ‎is by killing the woman/girl.‎ This kind of violence against women and girls is exercised also in western European countries ‎within immigrant families. It is generally referred to as honor killings-a rather misleading ‎term as the connection with honor is difficult to understand in most cultures. The term murder ‎in the name of honor has been suggested. ‎ There was this case of honor killing of 3 daughters and their mother who was murdered in ‎Canada and bodies dumped under a bridge by their own father with the help of his second wife ‎who were immigrants there and belonged to an Asian country. ‎ In Saudi Arabia where I used to visit frequently almost every year as my spouse was working in ‎Jeddah I witnessed many cases where in men when going for work locked their wives from ‎outside till the time they were back home in the evenings the reason being lack of trust on their ‎spouse and during one such incidence the house caught fire due to short circuit and the wife, ‎maid and an infant child were rescued by the neighbors through apartment windows as the door ‎to the house was locked from outside by the husband who had left for work. I left the site ‎wondering how much black smoke these three must have inhaled especially the infant child and ‎what effect it would have had on their lungs?‎ With the passage of time and increasing awareness especially in girls / women due increasing ‎literacy rates among women such violation is now getting well recognized as a public health ‎problem and human rights violation of worldwide. ‎ The states and working organizations for prevention and betterment of societies are now realizing ‎how this relates directly to the public health sector.‎ More and more need have arise to take appropriate measures and proper trained health workers ‎are being placed close to the victims of such violation who are also well acquainted with the ‎community they work for and its inhabitants.‎ The local health services and communities need to play their role and create awareness among the ‎public to prevent such incidents. ‎ The Central and Federal government bodies need not only to make strict laws for the prevention ‎of gender-based violence but ensure effective implementation as well.‎ The most effective way to reduce tolerance towards violence against women is to openly debate ‎the subject as still there is limited knowledge regarding most workable interventions for the ‎prevention of gender- based violations.‎ References †¢ ‎ www.health.state.mn.us/divs/hpcd/chp/hpkit/index.htm †¢ http://futureofchildren.org/futureofchildren/publications/docs/‎ †¢ http://heapro.oxfordjournals.org/content/21/suppl_1/25.full †¢ Violence Against Women the United Nations ‎ www.un.org/en/events/endviolenceday//UNiTE_TheSituation_EN.‎ †¢ Violence against women Gunilla Krantz, Claudia Garcia-Moreno †¢ http://www.wikigender.org/index.php/Violence_against_women