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In digital forensics, the creation time, last written time, and last accessed time of a file or folder are important factors that can indicate events that have affected a computer system. The form of the time information varies with the file system, and the information changes the features, depending on the user's actions such as copy, transfer, or network transport of files. Specific changes in the...
As a storage-unit of user created Web objects, the set has become an emerging challenge in the retrieval. Set search requires relevant sets to meet the information need of users, whereas traditional information retrieval focuses on finding relevant Web objects. This paper proposes a new approach to measure relevance of sets with respect to a user query by their topic coverage. The main idea of the...
In digital forensics investigation, a general method of investigating the suspect's computer was to duplicate storage media or image and then obtain the case-related data from these. However, the increase in the capacity of storage media made this method take much longer time. Also, this implies that more data can exist in the suspect's computer so that finding relevant data will take a lot of time...
Numbers of companies are using AMS (Accounting Management System) to manage their accounting data. In the case of large corporations they tend to use ERP (Enterprise Resources Planning), but except them most of companies use AMS to manage their accounting information. In the other words, every company is using some sort of digital data format to manage their accounting data. Therefore, if there is...
Signal-space diversity (SSD) has received a lot of attention for use in broadcasting due to its robustness in harsh channel environment. However, SSD converts constant envelope QPSK signal into multiple level QAM-like signal. In the previous researches on SSD applied systems, nonlinear amplification effects have not been considered. In this paper, an expanded QAM mapping predistorter is proposed for...
Accounting frauds of a company have direct and indirect effects on financial institutions. For instance, the well-known cases of Enron and WorldCom became a major scandal with worldwide repercussions in 2002. As a result, we began to pay attention to accounting transparency. Since then, many countries have established a law, a principle or a guide of accounting and accounting audit like Sarbanes-Oxley...
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