Dynamic Performance Simulation of Power Shift Clutch During Shift

Based on the theoretical analyses, the dynamic and mathematical models of the system were developed. The models were implemented in the ambit of the Matlab/Simulink environment, and an integrated simulation model was developed. The dynamic performance of the power shift clutch during engagement and disengagement was studied by using this assembly model. The sliding speed, torque transmitted through the clutch, and the rate at which energy is dissipated during the process were determined. Using this model, the calculation during simulation can be simplified. This lays a foundation for the dynamic performance research on the power train with the power shift clutch, and provides a powerful tool for developing an automatic, electronically controlled transmission.

乌克兰危机下欧盟力量格局变化趋向及其影响

The outbreak of the Ukraine crisis has accelerated the adjustment and power shifts of the European Union.Germany does not play the role model as it used to,its willingness and ability to make contributions have declined,and it has become a follower rather than a leader in the crisis response.The “Atlanticists” dominate the EU,and the “Europeanists” are weakened.Germany's all-round dependence on the United States has increased.France has lost traction on the EU,the German–French axis is absent,and the Central and Eastern European and Northern European countries are gaining momentum.Compared with other EU institutions and member states,the status and influence of the European Commission has been enhanced,leading the sanctions against Russia,participating more in the common security and defense policy,and contributing to the geo-politicization of EU economic policies.These changes will increase internal disputes within the EU,weaken the EU's international status and influence,and reduce the stability and predictability of the EU's China policy.

Characteristics on Hydro-mechanical Transmission in Power Shift Process

To improve the vehicular power and acceleration performance and reduce the shift impact, the study of the characteristics on power shift is necessary. Based on the flexible hydraulic unit of hydro-mechanical transmission, this paper explores the feasibility of shift without power interruption. With the four models concerning displacement ratio, rotational speed, rotational torque and power at ideal shift point, the characteristics on power shift in different running conditions are analyzed, and the rules of power shift are revealed. The theoretical analysis and test results show that the hydro-mechanical transmission can shift without power interruption in different running conditions. Furthermore, there exists an ideal shift point in theory, at which point the cycle power in hydro-mechanical transmission can＇t be generated, and the impact on the system can be reduced to the minimum. However, if before or after this ideal shift point, a cycle power can be generated.

The Power Shift： National Anxiety, Territorial Dispute, and Trans-Regional Cooperation in Asia and the US Role

＂Power Shift＂ is used as the emerging Asia （emerging China and India） and declining US, European Union （EU） and Japan in the contemporary world. In parallel, it is used as raising territorial disputes and Xenophobia in Asia and Europe, especially in East Asia, Japan, China, and Korea. However, Asian economic development and high economic growth rate attracts the US and the EU to Asian region, not a conflict, and it demands Asian stable development, rather than unstable territorial disputes. Angas Maddison Statistics, International Monetary Fund （IMF） and World Bank also shows that China will surpass the USA by Purchasing power parity （PPP） based Gross domestic product （GDP） economically in 2015. The world of the 21st century is not unilateral, but multilateral or multipolar system, and the sift is already starting from the American continent to the Asian continent. How does it ensure the Asian stability and how does it guarantee the collaboration and prosperity between Asian countries and the world？ And how does the United States uses Asian pivot and Asian rebalance strategy？ The analysis of these policies are extremely important for considering the future of the world system. In this article, the author investigates the rise and fall of the great powers in the transition era, and develops economics, knowledge and science technology in the near future. Especially the author investigates the importance of making networks of the think-tanks, and to strengthen the relationship between nation states and regions under the conflict and antagonism.

Global Power Structure Shifted and Transitional Multi-polarity Emerged

The world is facing the third important global power shift.The United States,EU, Japan,Russia,China,and the newly emerging power group are becoming the six big forces in the international center stage,while the former three forces and the latter three belong to two groups,waning and waxing respectively.The major shift in the global balance of power is bound to give rise to the transitional multi-polar configuration,which implies a shifting of leadership over the configuration,China and U.S.outweighing other forces,global issues looming large,homogeneity blending with heterogeneity,and a shifting center of world powers.The transitional multi-polar configuration is all about change,upon which China is one of the decisive forces.

Influence of Buffering Pressure Characteristics on Shift Clutch Engagement Process

The dynamic math model of shift clutch in engagement process was determined on the basis of hydraulic buffering valve and shift clutch of a power shift steering transmission. The influence of buffering pressure characteristic on shift clutch engagement process was analyzed. The study results could be used to the characteristics match of the shift clutch with the hydraulic system of the high speed tracked vehicle power shift steering transmission and the performance prediction.

Power Shifting in Japan

Japanese Foreign Minister Seiji Maehara resigned on March 6 after it was reported he had illegally accepted a donation from a South Korean supporter. Three days later, Maehara’s deputy Takeaki Matsumoto was named Japan’s new foreign minister. The Shanghai-based Jiefang Daily published an article by Lian Degui, Deputy Director of the Center for Japanese Studies of the Shanghai Institutes for International Studies, analyzing Japan’s ongoing political strife. The following is an excerpt from the article:

A Shift of Power

Administrative reforms are shifting prefecture government powers to the county level in an effort to boost local economies on July 8, the government of China’s southernmost Hainan Province announced that it was to hand over 177 of its administrative powers to county-level governments. The move practically dismantled the powers of

BRICS＇ Pursuit of Multipolarity： Response in the United States

In the last few years, ＂the BRICS＂ or Brazil, Russia, India, China, and South Africa have been increasingly investing in developing their cooperation and seeking to exert joint global influence. BRICS＇ mobilization has been visible in the cooperation of high-level officials, deeper policy coordination, and the creation of BRICS institutions. As the BRICS intensify their pursuit of multipolarity, surprisingly little attention has been paid to the ways in which the BRICS has been received in the United States （US）, which is a crucial stakeholder in creating a multipolar system. How is the BRICS represented in US foreign policy circles？ This article examines the state of the US debate on the BR/CS, drawing on the per- spectives from foreign policy officials, top think tanks, and academics. It argues that there is a considerable gap between BRICS＇ multipolar aspirations and the perceptions of the grouping＇s promise and potential in the US. The BRICS is often marginalized in the US as an entity, and---even if accepted as such--it is considered ineffective in terms of its results. However, the BRICS benefits US foreign policy development： it challenges US officials to clarify their message on multipolarity; it reframes the debate from bilateral China vs. US competition to multilateral processes of providing global public goods; it generates a subfield of BRICS studies, which internationalize the production and consumption of knowledge in the field of global politics.

Comparisons of the English and Chinese Language Networks:Many Similarities and Few Differences

With words as nodes,and a link exits between two neighboring words,the weighted directed English and Chinese written human language networks are constructed from one English novel and two Chinese ones.We hereby analyze in detail the topological structure of them,in order to clarify their similar and different statistical properties.The empirical results show that the English and Chinese language networks all possess the shifted power law(SPL)degree distribution,the small-world property and the hierarchical structure,the connections among the words have positive assortativity coefficient and reciprocal characteristics.We also investigate the features of the strength and the centrality,which describe the importance of a specific word.Furthermore,considering the growth properties of the language networks and part of topological property,we find that the English written human language network grows slower than the Chinese one,which implies different mechanisms of the English and Chinese languages.