Your answer is incomplpete<span>Native Americans have lived there for thousands of years, long before ... On July 4, 1776, people from the thirteen colonies created the United States ... In the early 1800s, the new nation faced many controversial issues, such as slavery ..... the United Stateswould not become involved in a war the two countries were fighting ...</span>Pre-Columbian America - Colonial America - <span>American Revolution</span>
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The process of transaction can guarantee the reliability of business applications. Locking resources is widely used in distributed transaction management (e.g; two phase commit, 2PC) to keep the system consistent. The locking mechanism, however, potentially results in various deadlocks. In service oriented architecture, the deadlock problem becomes even worse because multiple transactions try to lock shared resources in the unexpectable way due to the more randomicity of transaction requests, which has not been solved by existing research results. In this paper, we investigate how to prevent local deadlocks, caused by the resource competition among multiple sub-transactions of a gl obal transaction, and global deadlocks from the competition among different global transactions. We propose a replication based approach to avoid the local deadlocks, and a timestamp based approach to significantly mitigate the global deadlocks. A general algorithm is designed for both local and global deadlock prevention. The experimental results demonstrate the effectiveness and efficiency of our deadlock prevention approach. Further, it is also proved that our approach provides higher system performance than traditional resource allocation schemes.
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It is called D. destkop pulishing
With desktop publishing, people will had the options to choose a certain layout from the destkop publishing software that allow them to create high quality document in shorter period of time. This software allow individuals to publish on their own without the need of printing press.
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