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Unmanned Aerial Vehicles (UAVs) play a very important role in military and civilian activities. In this paper, the aim is to cover the borders of Iran using UAVs. For this purpose, two zero-one programming models are presented. In the first model, our goal is to cover the borders of Iran at the minimum total time (the required time to prepare UAVs to start flying and the flight time of the UAVs). In this model, by minimizing the total time of UAVs for covering the borders, the costs appropriate to the flight of UAVs (such as the fuel costs of UAVs) are also reduced. In the second model, which is mostly used in emergencies and when a military attack occurs on the country’s borders, the aim is to minimize the maximum required time to counter attacks and cover the entire country’s borders. The efficiency of both models is shown by numerical examples. [ABSTRACT FROM AUTHOR]

Having enough sights with respect to the specification of our national web is one of the major needs for national policy-making as well as the strategic planning in the area of information technology. Regarding the fact that there has been no comprehensive research conducted in the field of current situation of the Persian Web. Responding to this need, in this article, a semi-automatic and efficient evaluating system is designed and implemented It is aimed for extracting different parameters such as site content distribution (scientific., news, state, commercial and web logs), Persian content volume, the type of content, the life expectancy of the content, the kinds of provided services, the percentage of different Persian codings, etc. The statistics can be used for targeting the future plan for systematizing Persian web and also presenting approaches for solving the current problems. The analyses by the mentioned system are done on about eleven thousand sites in the domain of ".IR" including the majority of state organizations, ministries, companies and universities over two million pages. [ABSTRACT FROM AUTHOR]