Major Powers Cooperate in a Mild and Coordinated Way

Lu:If the tense situations in the Middle East and Northeast Asiabecome relaxed,it would certainly exert great influence on world politi-cal pattern.Can non-traditional security solve the contradictions in thetraditional security field?Will the major powers continue to cooperate inthe anti-terrorist campaign?All these issues will face challenges

Resource Allocation for IRS Assistedmm Wave Wireless Powered Sensor Networks with User Cooperation

In this paper,we investigate IRS-aided user cooperation(UC)scheme in millimeter wave(mmWave)wirelesspowered sensor networks(WPSN),where two single-antenna users are wireless powered in the wireless energy transfer(WET)phase first and then cooperatively transmit information to a hybrid access point(AP)in the wireless information transmission(WIT)phase,following which the IRS is deployed to enhance the system performance of theWET andWIT.We maximized the weighted sum-rate problem by jointly optimizing the transmit time slots,power allocations,and the phase shifts of the IRS.Due to the non-convexity of the original problem,a semidefinite programming relaxation-based approach is proposed to convert the formulated problem to a convex optimization framework,which can obtain the optimal global solution.Simulation results demonstrate that the weighted sum throughput of the proposed UC scheme outperforms the non-UC scheme whether equipped with IRS or not.

Fruitful Cooperation between CAS and Japanese Scientists Over the Past Three Decades

Ⅰ. From the Civilian Contact to the Dual Channel of Official and Non-governmental Exchanges From 1949 to 1972, S&T exchanges between China and Japan were dominated by civilian contacts,as non-governmental channels were used to intermediate between the two governments. In 1955, a delegation of Chinese scientists visited Japan under the leadership of Guo Moruo, the first president of CAS,and met with Japanese scientists and friends from all walks of life.

Supply Chain Cooperation between Coal Enterprise and Electric Power Enterprise in China

Based on the two-stage Stackelberg game method, value creation of supply chain cooperation between coal enterprise and power utilities is studied by formulating profit functions of coal and power enterprises and calculating the maximum profit. According to the analysis, it is found that the profit from supply chain cooperation between coal and power enterprises is more than that of non- cooperation. The cooperation is validated to be beneficial for both units; however, the profit is mainly taken by the power enterprise. Thus, it is necessary to set up the incentive mechanism to distribute cooperation value between coal and power enterprises to promote their continual cooperation.

Computation Rate Maximization in Multi-User Cooperation-Assisted Wireless-Powered Mobile Edge Computing with OFDMA

In the era of Internet of Things(Io T),mobile edge computing(MEC)and wireless power transfer(WPT)provide a prominent solution for computation-intensive applications to enhance computation capability and achieve sustainable energy supply.A wireless-powered mobile edge computing(WPMEC)system consisting of a hybrid access point(HAP)combined with MEC servers and many users is considered in this paper.In particular,a novel multiuser cooperation scheme based on orthogonal frequency division multiple access(OFDMA)is provided to improve the computation performance,where users can split the computation tasks into various parts for local computing,offloading to corresponding helper,and HAP for remote execution respectively with the aid of helper.Specifically,we aim at maximizing the weighted sum computation rate(WSCR)by optimizing time assignment,computation-task allocation,and transmission power at the same time while keeping energy neutrality in mind.We transform the original non-convex optimization problem to a convex optimization problem and then obtain a semi-closed form expression of the optimal solution by considering the convex optimization techniques.Simulation results demonstrate that the proposed multi-user cooperationassisted WPMEC scheme greatly improves the WSCR of all users than the existing schemes.In addition,OFDMA protocol increases the fairness and decreases delay among the users when compared to TDMA protocol.

Power auction and allocation for network-coded cooperation

Optimal resource allocation is critical to the efficiency of cooperative communiCations. In this paper, we develop an auction-based power allocation mechanism for network-coded cooperation in wireless networks, in which the sources compete for the relay power for maximum utility, while the relay node assigns the resource in accordance with the bids from the sources. Moreover, to improve the resource utilization, the relay node is allowed to perform network coding across the received information for the same destination. Finally, numerical results validate the performance of the proposed algorithm, and show that there exists a tradeoff between the system outage probability and the power consumed at the relay node.

PERFORMANCE ANALYSIS OF USER FAIR-BASED RELAY ADAPTIVE POWER ALLOCATION IN PHYSICAL-LAYER NETWORK CODING COOPERATION

Network Coding (NC) is an effective technology to enhance the cooperative system spectral efficiency. However, since it is network-oriented, the existing performance metric of single-user outage can not comprehensively evaluate its gain and the impact to the entire network, which affect the user fairness. This paper proposes two novel user fair-based adaptive relay power allocation algorithms in single-relay NC cooperative multiple access channels. Firstly, common outage probability is employed as the performance metric, and to minimize it, a specific condition is deduced. On this basis, the instantaneous channel information-based adaptive relay power allocation scheme and the channel statistic information-based one with lower complexity are designed respectively, which make users' signals superimposed at accurately calculated proportion to maintain fairness. Simulation results show that compared with other existing schemes, the proposed schemes can best maintain user fairness, and effectively improve the common outage performance of the whole system, at the expense of small spectral efficiency.

Recovering Japan-Sino Economic & Trade Relation Brings New Opportunities for Cooperation & Innovation

"Japan and China are in different stages for economic development and these two countries have their own advantages.Therefore,the Chinese and Japanese enterprises are highly complementary and have great potential to cooperate in future,"said Jiang Zengwei,chairman of the CCPIT on the Sino-Japan Entrepreneurs

Japanese Companies still Confident though Investment Decreases

Japanese companies may be investing less in China,but they have by no means given up on the market,according to a report by the Japanese Chamber of Commerce and Industry in China that was released recently.In its annual white paper,which discusses key issues facing Japanese companies in China and makes recommendations to the government,the chamber said Japanese companies still have strong intentions to expand in China."We hope this paper will promote dialogue and cooperation between the Chinese government and Japanese companies,"said Shinjiro Sawada,chairman of the chamber.With regard to companies’intentions to invest in China in the

Japanese Enterprises Seeking for Investment Opportunities in the Beijing-Tianjin-Hebei Region

"Both China and Japan are dedicated to carrying forward the structural reform,enhancing innovation and further opening up the market.So the trade and economic cooperation between China and Japan will have very bright future for development."said Yin Zonghua,

Regenerative Strategy for Sum-rate Enhancement in Bi-directional Three-node Cooperation

In bi-directional three-node cooperation, one regenerative strategy with network coding and power optimization is proposed for system sum-rate under a total energy constraint. In this paper, the network coding and power optimization are applied to improve system sum-rate. But max-rain optimization problem in power allocation is a NP-hard problem. In high Signal-to-Noise Ratio regime, this NP-hard problem is transformed into constrained polynomial optimization problem, which can be computed in polynomial time. Although it is a suboptimal solution, numerical simulations show that this strategy enhances the system sum-rate up to 45% as compared to a traditional four-phase strategy, and up to 13% as compared to the three-phase strategy without power optimization.

Analysis of Cooperation between Wind Power and Load Side Resources

Development of the intermittent energy is greatly promoted by change in energy, while consumption of large-scale intermittent energy is becoming a problem. With the development of smart grid technology, controllability of load side resources is becoming more and more important. Based on the wave characteristics of wind power, this paper indicates that wind energy has continuous output characteristics on the hour-time scale. Through analysis on loads characteristic of industry, public facility and resident, this paper gets comprehensive response of load side resources. Considering characteristics of wind power output, combined with different load side resources and DR program, this paper suggests cooperation between wind power and load side resources on different time scales.

Major-Country Diplomacy with Chinese Characteristics again on the March

The commemorative activities of the 70th anniversary of the victory of the Chinese People’s War of Resistance against Japanese Aggression and that of the victory of the World War on Fascism have been rounded up in complete success,with unprecedented magnificence.It is a grand meeting

Sino-Japan cooperation and exchange on environmental protection of thermal power plants well under way

At the invitation of International Cooperation Center,Ja-pan Electric Power Information Center,Inc.,on Octo-ber 1-13,1990,a Chinese delegation on electric power environmen-tal protection,composed of four experts,visited Japan,lookingaround some advanced thermal power plants and attending thepanel discussion on environmental countermeasures for thermalpower plants made by Japanese relevant specialists.The delegationwas much impressed with the Japanese tasks and achievements inthe field of environmental protection.

Delegation of Japanese Young Parliamentarians Visits China

At the invitation of the Chinese Association for International Understanding(CAFIU),a delegation of young members of Japan’s Diet headed by Taira Masaaki,member of House of Representatives visited Beijing from December 5 to 9.Chinese Vice-President Li Yuanchao met the delegation on December 7."We hope

China-Central Asia Power Cooperation Outlook

After analyzing the basic information,distribution of energy resources and condition of power industry in Central Asia,the high feasibility for China to cooperate closely with Central Asia in transnational power interconnection,power investment and technology exchanges,etc.is studied.Furthermore,the forms,mechanisms,existing problems and suggestions for the improvement of current policies related to the power cooperation are proposed.

INTERNAITONAL COOPERATION IN MEDICAL EQUIPMENT TECHNOLOGY

There is a long history of failure in international cooperation in medical equip-ment technology.IFMBE and JSMEBE have made great efforts to remedy the situa-tion.Recently,JSMEBE is asked by Japanese Goverment to provide a guideline forthe activities.A committee was formed for 3 years,and as a result of extensive sur-vey studies by questionaries,interviews and correspondences,the final guideline waspublished (in Japanese) March 1993.It is available on request,and English transla-

Electron Beam Desulfurization Project of Chengdu Cogeneration Power Plant Started Construction - A new cooperation in environment protection between China and Japan

On March 25 1996, the electron beam flue gas desulfurization demonstration project of Chengdu Cogeneration Power Plant started formal construction This is at present the largest electron beam desulfurization project in power plants in the world, and is jointly constructed by Sichuan Electric Power Bureau and the EBARA Works of Japan, This is an important cooperation project in environment protection between