Political Violence Essay Example | Topics and Well Written Essays - 250 words

Political Violence - Essay Example The concept of â€Å"internal enemy† was significantly applied during the cold war period. The concept was applied in countries such as Guatemala, Chile, and El Salvador. In Guatemala, the concept was applied to overturn the regime that was seen as leaning towards communism. The concept was successful in the removal of Col. Jacobo Arbenz from power (Byrne 6). Moreover, the idea led to training of people that could topple the regime. On the other hand, the concept was well applied in Chile. In Chile, the concept led to destabilization of Allende government that was successful elected. The concept also led to the elimination of those people that were seen as being leftist. Most of the people were killed and detained in the country (Byrne 8). Additionally, in El Salvador, the concept provided a way in which to train police and military force inn the country to play a role in countering of insurgency. The forces played a significant role in killing of a large number of people in t he 70s and the 1980s (Byrne 10). The political repression in these three countries targeted those that were seen as leftist or supporting communism. In addition, repression led to the elimination of those opposed to democratic ideas. In conclusion, it is clear that United States contributed significantly to destabilization Latin America during cold war period. The destabilization continues to be experienced in the region until

Matlab Simulation for the DiPPM with RS system Essay

Matlab Simulation for the DiPPM with RS system - Essay Example The Matlab software was used to simulate the DiPPM system (Appendix-?). The system design was depended on the DiPPM system troth table, table ( ). The DiPPM system program contains two main sections, DiPPM coder and DiPPM decoder. The first step is a clock and a random binary PCM signal generating. The generated PCM signal is changing every running of the simulation to produce a different binary PCM signal. Thus, different DiPPM pulses are being shaped. The second step is calling the DiPPM coder subroutine. The DiPPM coder subroutine was used to create the DiPPM signal (SET & RESET) from the binary PCM signal. Each change from zero to one in PCM sequence gives SET in DiPPM signal, and the change from one to zero in PCM sequence produces an RESET pulse in DiPPM. No pulse generated in DiPPM signal when the PCM sequence does not change. The third step in this program was used to regenerate the original PCM sequence from the DiPPM sequence (DiPPM decoder). The program is going to produce a binary one in PCM sequence when it receives an SET pulse, and it continues until an RESET pulse is received to produce a binary zero. The fourth step of the program is applied to change the binary sequence (one & zero) to pulse shape. Plots output for the DiPPM coder and decoder system were set in the last part of the program. Figure (5.1), shows the DiPPM system results for two different PRBS PCM sequences. Each run simulation produces four line output plot, clock sequence in the first line, then the PCM sequence and DiPPM and Decoded PCM sequence are coming respectively. It is clear from the figure that the system working as the DiPPM theory mentioned, chapter three. The first function is for RS encoder and the second function for RS decoder. The encoder function encodes the message in (msg) using an [n,k] Reed Solomon code and specifies the generator polynomial (genpoly) for the code. The message is a Galois array of symbols having m bits each.