درخت حوزه‌های تخصصی

Purpose: The purpose of this study was to examine the effect of 12 week a selected aerobic exercise program on body composition, lipid profile, and working ability of employees involved overweight and obese. Method: In this semi-experimental study with pre-test, post-test design and control group, 65 overweight employees were selected by purposive sampling method and randomly assigned to exercise and control groups. Then aerobic exercise program three sessions per week and each session 65-50 minutes, was performed for 12 weeks for the experimental group. The control group did not have such an intervention. Body composition indices, workability index and, lipid profile were measured before and after the training protocol for both groups. Data were analyzed using the covariance test (ANCOVA). Results: The results showed that aerobic exercise significantly reduced body composition indices, including (fat percentage, body mass index, and waist to pelvic ratio) and total cholesterol, triglyceride, low-density lipoprotein (LDL) the exercise group compared with the control group. The levels of high-density lipoprotein (HDL) and the ability to work index of the exercise group also increased (P <0.05). Conclusions: The results indicated that aerobic exercise could improve body composition, lipid profile and workability index, and prevented contracting chronic diseases, reducing their ability to work, and retiring early in overweight and obese employees.

China is consolidating its position in the international system, taking advantage of a variety of channels in the process. The establishment of the Asian Infrastructure Investment Bank (AIIB) is a historical step by China in the international economic order. The AIIB, as an international financial and development institution attempts to engage and participate in the economic infrastructures of the member states. The question addressed in this research is, How could China's approach in establishing the AIIB be analyzed with respect to new economic developments in the last two decades?  The hypothesis is that the AIIB is considered as a network structure for making a centrality in the economic order for China, which facilitates the systemic evolution in international arena. The AIIB is therefore considered as a strategic turning point in the international economic order. This study argues that China is attempting to elevate and consolidate its economic role among the regional countries to institutionalize its centrality. Accordingly, it seems that China aspires to promote changes in the international system through a complementary and distinguished evolution. Therefore, the reliability of the AIIB is vital for this openness phase, and China is keenly going to maintain and strengthen the AIIB for coming games and required strategic plans.

China is actively engaged in Afghanistan, especially with the Neo-Taliban, which indicates significant changes in China's foreign policy. The Chinese government invited the Neo-Taliban delegations several times and tried to expand their role in their country. The present study examines the impact of China's active engagement with the Neo-Taliban, using Ibn Khaldun's Social Theory and Discourse Analysis. Questioning the nature of the active engagement of China with Neo- Taliban, we hypothesized an increase in insecurity overflow from Afghanistan to China, as well as an increase in insecurity complications in Afghanistan against China’s interests. It became clear that the Neo-Taliban's increasing interaction with China was to the detriment of Taliban and ultimately China. The Doha Peace Agreement requested the control and restriction of foreign fighters residing in Afghanistan, which for the foreign fighters, including the Uighurs, were a reminder of the restrictions imposed on them before the fall of the Islamic Emirate. However, Mullah Omar did not openly engage with China. This will delegitimize the Afghan Neo-Taliban and ultimately create a disperse Neo-Taliban with a fragile legitimacy, whose fragility does not seem to collapse, but will not serve China's interests either.

Artificial Intelligence (AI), as a strategic technology, has provided a platform for international competition; ever since the development of the first AI strategy in 2017, to the final days of 2021, more than fifty countries drafted or declared their national strategy aiming at becoming one of the pioneering countries in this field. Although the United States is known as the current pioneering country in the field of AI, China has been able to lead in various areas related to AI, such as occupational opportunities, Internet of Things (IoT), Big Data, Blockchain, and G5, which, due to the historical significance of emerging technologies in changing the balance of power, present a clear image of what is to come at the international stage. Given the novelty of artificial intelligence in the balance of power, the author asks about the effect of China’s artificial intelligence on the international balance of power. The answer is the hypothesis that China tries to effectively interact with its leading private artificial intelligence companies and implement this technology in internal, economic, and military governance. Thus, China aims to raise its national power and challenge the American hegemony through hard internal balance, paving the way for a multipolar world order alongside other regional powers leading in artificial intelligence. This could lead to further instability in the international system. The research hypothesis was analyzed using the explanatory method and Mearsheimer's Balance of Power Theory, and the data collection method consisted of library research.