A new type of vehicle routing problem （VRP）, multiple vehicle routing problem integrated reverse logistics （MVRPRL）, is studied. In this problem, there is delivery or pickup （or both） and uncertain features in t...A new type of vehicle routing problem （VRP）, multiple vehicle routing problem integrated reverse logistics （MVRPRL）, is studied. In this problem, there is delivery or pickup （or both） and uncertain features in the demands of the clients. The deliveries of every client as uncertain parameters are expressed as triangular fuzzy numbers. In order to describe MVRPRL, a multi-objective fuzzy programming model with credibility measure theory is constructed. Then the simulationbased tabu search algorithm combining inter-route and intra-route neighborhoods and embedded restarts are designed to solve it. Computational results show that the tabu search algorithm developed is superior to sweep algorithms and that compared with handling each on separate routes, the transportation costs can be reduced by 43% through combining pickups with deliveries.展开更多
Seeking to alleviate and eradicate Bao （the minimum livelihood guarantee system） extreme povertY, the Chinese government has extended Di to the entire rural sector. It has also enhanced agricultural policies and str...Seeking to alleviate and eradicate Bao （the minimum livelihood guarantee system） extreme povertY, the Chinese government has extended Di to the entire rural sector. It has also enhanced agricultural policies and strengthened its promotion of rural socioeconomic development. In more-developed regions of the country, the Di Bao program-in combination with integrated urban and rural social insurance and public services-has significantly reduced rates of poverty and financial vulnerability, and additional employment-promotion policies have created opportunities for Di Bao recipients to achieve incomes above the poverty-line. However, because of the high number of extremely poor households in disproportionately poor areas and the paucity of locally-available financial resources there, the intensity of intervention is still insufficient. Inadequate coordination of policies and shortcomings in the targeting of subsidies have resulted in both under-coverage and welfare-leakage as well. Consequently, in China＇s efforts to eradicate extreme poverty, increasing the effectiveness of poverty-reduction strategies in poor areas remains a key prioritY.展开更多
With the acceleration of urbanization, the lifestyles and living expenses of farmers and urban residents is increasingly more and more similar .However, from the measures in terms of the minimum living guarantee, the ...With the acceleration of urbanization, the lifestyles and living expenses of farmers and urban residents is increasingly more and more similar .However, from the measures in terms of the minimum living guarantee, the level of protection of rural and urban residents really have a large gap. The Third Plenary Session of the 18th Central Committee noted ＂to promote urban and rural minimum living security system and rural development＂, ＂to speed up and improve the social security management system and operate the service system＂,These tell us that only to realize the integration of urban and rural subsistence allowances, improve the underpinning of the social security system, can we build a moderately prosperous society.展开更多
With the idea of mechatronic integration,a novel finger of the dextrous robot hand has been designed. The finger with nice envelop has four joints with three DOFs driven by three brushless DC motors with smaller size ...With the idea of mechatronic integration,a novel finger of the dextrous robot hand has been designed. The finger with nice envelop has four joints with three DOFs driven by three brushless DC motors with smaller size and more torque. The use of rigid gear head,bevel gears and linkage in the transmission system makes the finger more rigid. Abundant sensors such as joint angle sensors,joint torque sensors and temperature sensors are located in the finger. Integration and modularization are achieved at most by high integration of finger body,driving system,sensors and electronics.展开更多
Developing modern agriculture is an important aspect of urban and rural integration. Chintz has adopted a new, highly compatible, multipronged approach. Judgingfrom current agricultural and rural policies, factors lik...Developing modern agriculture is an important aspect of urban and rural integration. Chintz has adopted a new, highly compatible, multipronged approach. Judgingfrom current agricultural and rural policies, factors like capital, labor and land will continue to interact and revolve. The transformation of China＇s rural land tenure system is at a critical posifion in the overall strategy of developing tile rural economy. However, rural institutional reform will inevitably be constrained by the path and pattern China＇s industrialization, urbanization and agricultural modernization take. Creating a new pattern of urban and rural socioeconomic integration requires reform and improvement of rural grassroots governance structure. The interaction and reconsolidation of the factors have again become intertwined with the superstructure of rural society and will inevitably affect the direction and pace of rural grassroots governance structural reJbrm. Protecting the economic interests of farmers while respecting their democratic rights will always be at the heart of agricultural modernization.展开更多
Presently, Chinese urban and rural medicare systems differ from each other in many aspects including coverage, payment, and funding patterns, etc, which accounting mainly for the serious situation of the division betw...Presently, Chinese urban and rural medicare systems differ from each other in many aspects including coverage, payment, and funding patterns, etc, which accounting mainly for the serious situation of the division between urban and rural areas, among different areas and among different communities. The paper will firstly illustrate the purposes and principles of integrating urban and turn/medical insurance systems. Then, with the development of socialist core value--equity, the consideration of the development of the social security system, and the consideration of the strengthening of the rural and urban economy, integrating three main basic health insurance systems is required to take place urgently, In the last part, it provides the strategic development of the inter,ration of the dual svstem.so as to build an uniform social insurance system.展开更多
Asia has a special significance in China’s neighborhood strategy.Geographically,the Belt and Road Initiative faces the countries of Asia or China’s neighbors in the first place.Asia is clearly marked by an imbalance...Asia has a special significance in China’s neighborhood strategy.Geographically,the Belt and Road Initiative faces the countries of Asia or China’s neighbors in the first place.Asia is clearly marked by an imbalance in and“absence”of regional economic integration.This“absence”is two-fold:it is expressed on the one hand as a lack of unified institutional arrangements for regional economic integration,and on the other as the inability of underdeveloped countries in the region to truly participate in regional economic integration and thereby gain opportunities for development.Compared with the rule-oriented nature of existing regional economic integration mechanisms,the Belt and Road Initiative,as a new type of regional cooperation mechanism,displays an orientation towards development.All existing regional economic integration arrangements,regardless of their form,establish specific rules on access thresholds,the rights and duties of member countries,schedules and roadmaps,dispute resolution mechanisms and so forth.This is not the case for the Belt and Road,which is not predicated on specific rules,but establishes its overall framework by orienting itself towards development.Overall,the development orientation of the Belt and Road is helpful not only in overcoming the inherent defects of Asian regional economic integration,but in responding to the new challenge of anti-globalization.This is an institutional public good that China offers to Asia and to the world.展开更多
We demonstrate a pH sensor based on ultrasensitive nanosize Schottky junctions formed within bottom-up grown dopant-flee arrays of assembled silicon nanowires. A new measurement concept relying on a continuous gate sw...We demonstrate a pH sensor based on ultrasensitive nanosize Schottky junctions formed within bottom-up grown dopant-flee arrays of assembled silicon nanowires. A new measurement concept relying on a continuous gate sweep is presented, which allows the straightforward determination of the point of maximum sensitivity of the device and allows sensing experiments to be performed in the optimum regime. Integration of devices into a portable fluidic system and an electrode isolation strategy affords a stable environment and enables long time robust FET sensing measurements in a liquid environment to be carried out. Investigations of the physical and chemical sensitivity of our devices at different pH values and a comparison with theoretical limits are also discussed. We believe that such a combination of nanofabrication and engineering advances makes this Schottky barrier-powered silicon nanowire lab-on-a-chip platform suitable for efficient biodetection and even for more complex biochemical analysis.展开更多
Significant efforts have been devoted to enhancing the sensitivity and working range of flexible pressure sensors to improve the precise measurement of subtle variations in pressure over a wide detection spectrum. How...Significant efforts have been devoted to enhancing the sensitivity and working range of flexible pressure sensors to improve the precise measurement of subtle variations in pressure over a wide detection spectrum. However,achieving sensitivities exceeding 1000 kPa^(-1) while maintaining a pressure working range over 100 kPa is still challenging because of the limited intrinsic properties of soft matrix materials. Here, we report a magnetic field-induced porous elastomer with micropillar arrays(MPAs) as sensing materials and a well-patterned nickel fabric as an electrode. The developed sensor exhibits an ultrahigh sensitivity of 10,268 kPa^(-1)(0.6–170 kPa) with a minimum detection pressure of 0.25 Pa and a fast response time of 3 ms because of the unique structure of the MPAs and the textured morphology of the electrode. The porous elastomer provides an extended working range of up to 500 kPa with long-time durability. The sophisticated sensor system coupled with an integrated wireless recharging system comprising a flexible supercapacitor and inductive coils for transmission achieves excellent performance. Thus, a diverse range of practical applications requiring a low-to-high pressure range sensing can be developed. Our strategy, which combines a microstructured high-performance sensor device with a wireless recharging system, provides a basis for creating next-generation flexible electronics.展开更多
基金The National Natural Science Foundation of China(No.70772059)Youth Science and Technology Innovation Foundation of Nanjing Agriculture University(No.KJ06029)
文摘A new type of vehicle routing problem （VRP）, multiple vehicle routing problem integrated reverse logistics （MVRPRL）, is studied. In this problem, there is delivery or pickup （or both） and uncertain features in the demands of the clients. The deliveries of every client as uncertain parameters are expressed as triangular fuzzy numbers. In order to describe MVRPRL, a multi-objective fuzzy programming model with credibility measure theory is constructed. Then the simulationbased tabu search algorithm combining inter-route and intra-route neighborhoods and embedded restarts are designed to solve it. Computational results show that the tabu search algorithm developed is superior to sweep algorithms and that compared with handling each on separate routes, the transportation costs can be reduced by 43% through combining pickups with deliveries.
文摘Seeking to alleviate and eradicate Bao （the minimum livelihood guarantee system） extreme povertY, the Chinese government has extended Di to the entire rural sector. It has also enhanced agricultural policies and strengthened its promotion of rural socioeconomic development. In more-developed regions of the country, the Di Bao program-in combination with integrated urban and rural social insurance and public services-has significantly reduced rates of poverty and financial vulnerability, and additional employment-promotion policies have created opportunities for Di Bao recipients to achieve incomes above the poverty-line. However, because of the high number of extremely poor households in disproportionately poor areas and the paucity of locally-available financial resources there, the intensity of intervention is still insufficient. Inadequate coordination of policies and shortcomings in the targeting of subsidies have resulted in both under-coverage and welfare-leakage as well. Consequently, in China＇s efforts to eradicate extreme poverty, increasing the effectiveness of poverty-reduction strategies in poor areas remains a key prioritY.
文摘With the acceleration of urbanization, the lifestyles and living expenses of farmers and urban residents is increasingly more and more similar .However, from the measures in terms of the minimum living guarantee, the level of protection of rural and urban residents really have a large gap. The Third Plenary Session of the 18th Central Committee noted ＂to promote urban and rural minimum living security system and rural development＂, ＂to speed up and improve the social security management system and operate the service system＂,These tell us that only to realize the integration of urban and rural subsistence allowances, improve the underpinning of the social security system, can we build a moderately prosperous society.
基金Sponsored by the High Technology Research and Development Program of China(Grant No.2008AA04Z203)Development Program for Outstanding Young Teachers in Harbin Institute of Technology(Grant No.HITQNJS.2008.010)
文摘With the idea of mechatronic integration,a novel finger of the dextrous robot hand has been designed. The finger with nice envelop has four joints with three DOFs driven by three brushless DC motors with smaller size and more torque. The use of rigid gear head,bevel gears and linkage in the transmission system makes the finger more rigid. Abundant sensors such as joint angle sensors,joint torque sensors and temperature sensors are located in the finger. Integration and modularization are achieved at most by high integration of finger body,driving system,sensors and electronics.
文摘Developing modern agriculture is an important aspect of urban and rural integration. Chintz has adopted a new, highly compatible, multipronged approach. Judgingfrom current agricultural and rural policies, factors like capital, labor and land will continue to interact and revolve. The transformation of China＇s rural land tenure system is at a critical posifion in the overall strategy of developing tile rural economy. However, rural institutional reform will inevitably be constrained by the path and pattern China＇s industrialization, urbanization and agricultural modernization take. Creating a new pattern of urban and rural socioeconomic integration requires reform and improvement of rural grassroots governance structure. The interaction and reconsolidation of the factors have again become intertwined with the superstructure of rural society and will inevitably affect the direction and pace of rural grassroots governance structural reJbrm. Protecting the economic interests of farmers while respecting their democratic rights will always be at the heart of agricultural modernization.
文摘Presently, Chinese urban and rural medicare systems differ from each other in many aspects including coverage, payment, and funding patterns, etc, which accounting mainly for the serious situation of the division between urban and rural areas, among different areas and among different communities. The paper will firstly illustrate the purposes and principles of integrating urban and turn/medical insurance systems. Then, with the development of socialist core value--equity, the consideration of the development of the social security system, and the consideration of the strengthening of the rural and urban economy, integrating three main basic health insurance systems is required to take place urgently, In the last part, it provides the strategic development of the inter,ration of the dual svstem.so as to build an uniform social insurance system.
文摘Asia has a special significance in China’s neighborhood strategy.Geographically,the Belt and Road Initiative faces the countries of Asia or China’s neighbors in the first place.Asia is clearly marked by an imbalance in and“absence”of regional economic integration.This“absence”is two-fold:it is expressed on the one hand as a lack of unified institutional arrangements for regional economic integration,and on the other as the inability of underdeveloped countries in the region to truly participate in regional economic integration and thereby gain opportunities for development.Compared with the rule-oriented nature of existing regional economic integration mechanisms,the Belt and Road Initiative,as a new type of regional cooperation mechanism,displays an orientation towards development.All existing regional economic integration arrangements,regardless of their form,establish specific rules on access thresholds,the rights and duties of member countries,schedules and roadmaps,dispute resolution mechanisms and so forth.This is not the case for the Belt and Road,which is not predicated on specific rules,but establishes its overall framework by orienting itself towards development.Overall,the development orientation of the Belt and Road is helpful not only in overcoming the inherent defects of Asian regional economic integration,but in responding to the new challenge of anti-globalization.This is an institutional public good that China offers to Asia and to the world.
文摘We demonstrate a pH sensor based on ultrasensitive nanosize Schottky junctions formed within bottom-up grown dopant-flee arrays of assembled silicon nanowires. A new measurement concept relying on a continuous gate sweep is presented, which allows the straightforward determination of the point of maximum sensitivity of the device and allows sensing experiments to be performed in the optimum regime. Integration of devices into a portable fluidic system and an electrode isolation strategy affords a stable environment and enables long time robust FET sensing measurements in a liquid environment to be carried out. Investigations of the physical and chemical sensitivity of our devices at different pH values and a comparison with theoretical limits are also discussed. We believe that such a combination of nanofabrication and engineering advances makes this Schottky barrier-powered silicon nanowire lab-on-a-chip platform suitable for efficient biodetection and even for more complex biochemical analysis.
基金supported by the National Natural Science Foundation of China (61904141)the Funding of the Natural Science Foundation of Shaanxi Province (2020JQ-295)+2 种基金China Postdoctoral Science Foundation (2020M673340)the Key Research and Development Program of Shaanxi (2020GY-252)the National Key Laboratory of Science and Technology on Vacuum Technology and Physics (HTKJ2019KL510007)。
文摘Significant efforts have been devoted to enhancing the sensitivity and working range of flexible pressure sensors to improve the precise measurement of subtle variations in pressure over a wide detection spectrum. However,achieving sensitivities exceeding 1000 kPa^(-1) while maintaining a pressure working range over 100 kPa is still challenging because of the limited intrinsic properties of soft matrix materials. Here, we report a magnetic field-induced porous elastomer with micropillar arrays(MPAs) as sensing materials and a well-patterned nickel fabric as an electrode. The developed sensor exhibits an ultrahigh sensitivity of 10,268 kPa^(-1)(0.6–170 kPa) with a minimum detection pressure of 0.25 Pa and a fast response time of 3 ms because of the unique structure of the MPAs and the textured morphology of the electrode. The porous elastomer provides an extended working range of up to 500 kPa with long-time durability. The sophisticated sensor system coupled with an integrated wireless recharging system comprising a flexible supercapacitor and inductive coils for transmission achieves excellent performance. Thus, a diverse range of practical applications requiring a low-to-high pressure range sensing can be developed. Our strategy, which combines a microstructured high-performance sensor device with a wireless recharging system, provides a basis for creating next-generation flexible electronics.
