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The issue of territorial claims of countries in cyberspace, which is done with the aim of extending territorial sovereignty from real geography to cyberspace, can have different dimensions from a legal point of view. Because a diverse range of national, non-national, private actors, public institutions and citizens are present in cyberspace, each of which pursues its own interests in this space, and the efforts of each to exercise sovereignty in this space can lead to the reaction of other actors and legally complicates the issue of governance and governance of cyberspace. For the author of this article, this issue became a research issue worthy of attention and provided the ground for him to study the various dimensions of this issue with the help of the literature in the knowledge of international law. To achieve this goal in this study, in the first step, an attempt will be made to use the concept of customary international trade law to assess the issue of legal interaction across national borders and territorial sovereignty of countries and then will try to investigate this issue that which factors do affect the exercise of sovereignty in cyberspace by different countries?. In the following, by examining these factors, the legal consequences of countries territorial claims in cyberspace will be examined, and this issue will also be discussed that what consequences will ultimately have the territorial claims which cause the conflict of interests in cyberspace from the perspective of international law?

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In this article the effect of using ejector on the thermodynamic performance of the hybrid heat pump is evaluated. With simulation of the new hybrid-ejector heat pump in the EES software, first the effect of the ejector mixing section diameter on the results is analyzed and it is concluded that a diameter of about 15mm makes the primary energy ratio (PER, the ratio of useful thermal energy output to the total initial heat energy input) and second law efficiency of the heat pump to be maximum and the exit temperature of the compressor to be minimum. Next, PER, second law efficiency and the compressor exit temperature of new heat pump are compared with those of the conventional hybrid heat pump at the same amount and temperature of the input heat. The results showed that the PER and second law efficiency of the new layout is maximum 10 percent and about 18 percent higher than those of the hybrid cycle respectively. It is also observed that with considering the restriction in compressor exit temperature, in new system, it is possible to increase the temperature of input heat 35C more compared to the increase that can be occurred in the hybrid system. Finally, the analysis of the relative exergy losses in the components of the systems revealed that in the new layout, the relative exergy losses of throttling valve, desorber, compressor and absorber were reduced and improved the performance of this cycle.