Communcation Assignment Example | Topics and Well Written Essays - 2000 words

Communcation - Assignment Example Distinctive channels have diverse qualities and shortcoming. 4. Decoder: Decoder translates the encoded message to recover the original message. This procedure has to be correct and accurate, or else the message is lost completely. This encoding and decoding will be exceptionally help full in military and versatile correspondences. a) Super Low and Extra Low Frequency bands (SLF and ELF) normally occur natural. This can be very long antennae used by electricity authorities, called power lines radiating 50 or 60 Hz. The signal is experienced as hum. The largest natural source of this radio wave is the interaction between the solar wind and the ionosphere, which results in low frequency currents in the earth and oceans. They are usually studied by geophysicists to understand, inter alia, the availability of ore deposits whose electrical conductance is different from that of the surrounding crust. Like ULF (As illustrated in b) below), these bands achieve applications in communication with submarines, and uses very low information rates. b) 300 Hz - 3 kHz. Ultra Low Frequency (ULF). Water or the earth does not readily consume electromagnetic waves occurring in this range. As such, they might be utilized to communicate among or with submarines and with mines. One drawback is that, with such low frequencies, one can only be in a position to modulate the amplitude sufficiently so they cannot convey much data. This is not a disservice if the stage is needed, as is the situation for systems used for navigation. The wavelengths are long to the point that radio wires may be very long. d) 30 - 300 kHz. Low Frequency (LF). This band advantageous since waves can be propagated around the Earth, using refraction and reflections within the ionosphere or the earth surface. For this reason, these two wave channels form a waveguide for the radio waves in this range, which can hence be tapped for communication purposes across the oceans and around the world. e)

The field of psychology addresses the constant question of whether Research Paper

The field of psychology addresses the constant question of whether humans are born hard-wired with specific characteristics and - Research Paper Example However, when it comes to understanding the causes behind severe behavior problems like addiction, anger, aggression, criminal bent of mind, sadism, depression, anti-social behavior etc., then understanding the role of nature and nurture in the development of these patterns becomes an important. Hence, people in the field of psychology and psychiatry continuously make efforts to find out what it is that makes human beings behave in certain way, nature or nurture. That is, they try to know if people are genetically programmed to behave in a certain way or if their behavior is shaped by the environment. However, studies in psychology have given a hope to human beings by showing that even though human beings are programmed through their genes to behave in certain way, the environment has the power to break the genetic programming and modify the behavior pattern of human beings in positive way by strengthening the ‘good’ genes and weakening the ‘bad’ genes. The Role Of Genes Variations In Genes Genes play an important role in the development of behavior and personality pattern of human beings. Different genes are responsible for development of different habits and behavior pattern in people. Every human being has same 20,000 genes present in the body but what makes them different is its ‘variants’ or ‘flavors’ (Frehley, 2010, para.1). ... However, it is important to note that scientists are not 100% sure of this information as it is not a statement but a ‘speculation’ (Frehley, 2010, para.2). Also, it is interesting to know that every human being possesses all the genes but what makes them differ in behavior is the â€Å"less than 1%† variance in the genes (Frehley, 2010, para.5). According to Ebstein et al. (1996), the variations in ‘specific’ geneses result in different social behavior patterns in different individuals (Nicolaou & Shane, n.d., p.2). It makes one wonder if such a small amount of genetic variation is ‘major’ enough to control the will power in human being. That is, can human being acquire skills or behavior pattern that he is not genetically programmed to acquire? Evolutionary psychology, also known as ‘modern Darwinism’, is the field that helps in answering this ‘nature or nurture’ question (Nicholson, 1998, p.135). Desire For Se curity It is a natural understanding that if the circumstances and the conditions of living change, then the behavior of human beings should also change. However, according to the evolutionary psychology, human beings living in today’s modern world, still display the same ‘survival’ traits that their ancestors living in the Stone Age had displayed to survive the threats in the environment (Nicholson, 1998, p.135). This shows that even if the environment and the surrounding situations change, human beings still carry the ‘innate’ fear from surrounding and are ‘hard wired’ to behave in certain way when they sense threat. For example, people from Stone Age were genetically programmed to gather and store enough food and have