Understanding Mystery from the Perspectives of the Bermuda Triangle Research Paper

Understanding Mystery from the Perspectives of the Bermuda Triangle - Research Paper Example The mystery surrounding this busy sea-route derives from the fact that many ships, as well as airplanes, passing through this, have been reported to have disappeared without a trace. Thus, it becomes an intriguing proposition to evaluate the mystery that surrounds the Bermuda Triangle to understand the term mystery. The subject of the mystery is not the Triangle as such, which is naturally formed and is a physical place, not a figment of the imagination. Due to the mysterious incidents of disappearances that occurred in the area, some people also call it the Devil’s Triangle. No US government file has identified the location of Bermuda Triangle or for that matter, the Board of Geographic Names. However, the name continues to serve as a synonym for mystery, due to various instances of reported missing of ships entering the area of airplanes flying over the triangle. It adds to the element of mystery that no probable logical cause can be assigned to such disappearances. Thus, from the episodes of disappearances attributed to the Bermuda Triangle, which are beyond any reasonable explanation, it can be construed that a mystery is something that is beyond the scope of logical explanations. The geographical positioning of the Bermuda Triangle, as per existing interpretations, is off the Southeastern coast of the United States in the Atlantic Ocean, with its vertices touching Bermuda, Miami, Florida, and San Juan, Puerto Rico, roughly grounded in 500,000 square miles (Obringer, 2012). The name â€Å"Devil’s Triangle† is associated with Bermuda because once it has been known as â€Å"the Isle of Devils.† The reefs surrounding the area are quite tricky to the sailing ships, resulting in the wreckage of many and, thus, the place acquired the notoriety associated with its name.  

Mutual Exclusion in Multiprocessor Systems Essay

Mutual Exclusion in Multiprocessor Systems - Essay Example This issue can be resolved by employing an appropriate mutual exclusion of the programs and their resources so that no two programs would request for the same resource if one of them is using it already. Therefore, under many occasions, it is important for the programs to recognise the usage of any of the resources and should provide for resolving the same at the earliest possible opportunity. This paper aims at studying the possible mutual exclusion algorithms that are employed in a uni-processor system and in a multi-processor system. With reference to the execution of a code or a section of a code, these should not be executed by two processes at the same time. They are to be critical code. Assuming that there will be multiple processes running on multiple processors, there could be more than one process requesting for the same resource. It is important for all the requesting processes to allow one process to run at a time. Mutual exclusion algorithms should ideally provide lee-way for the following options: 1. Freedom from deadlock: Locking is the simplest way of avoiding repeat use of critical processes. While locking can be effective for stopping execution of a job, when another one is running, it might not be fool proof. For instance, if process 1 locks a critical section A for its use and it makes use of section B for execution of the section A and suppose process 2 locks section B and for its execution if it needs section A which is locked already by process 1, then a dead lock occurs. (Figure 1). Any successful mutual exclusion should also avoid deadlocking. 2. Freedom from Livelocking: This is a desirable requirement for the algorithms offering the mutual exclusion. This would ensure that there is no permanent lock existing for any process; a corollary of the deadlocking. But it also says that if some process wants to enter a critical section, one such process will enter the critical section. This implies that the one