Since the end of the Cold War, the non-proliferation work on Weapons of Mass Destruction (WMD) has gradually become the first priority in the field of arms control and international security. With the unswerving effor...Since the end of the Cold War, the non-proliferation work on Weapons of Mass Destruction (WMD) has gradually become the first priority in the field of arms control and international security. With the unswerving efforts by international community, enormous progress has been made in the construction .展开更多
The Iraq war and the North Korean nuclear crisis are the two big events that are attracting worldwide attention. The many debates and changes that have arisen around the globe from these two issues, with the former in...The Iraq war and the North Korean nuclear crisis are the two big events that are attracting worldwide attention. The many debates and changes that have arisen around the globe from these two issues, with the former in particular, cannot but cause展开更多
Urban system is the spatial reflection of the inner-deep social economic movement. New economic circumstances not only make the evolution of urban system present one brand-new landscape, but also put forward a new sub...Urban system is the spatial reflection of the inner-deep social economic movement. New economic circumstances not only make the evolution of urban system present one brand-new landscape, but also put forward a new subject for planning of urban system. This article analyzes the properties of the traditional economic process and its essential effect on urban system; it makes a complete survey on the properties of new economic circumstances and its effect on re-forming of urban system; the complicated influential process and result are concluded into the aspects, such as new growth motive force, new economic organization, new location factor and new spatial phenomenon, and its inner effect mechanism in shown as well. In this article, the change process of urban system space is explained in four aspects: (1) dissimulation in the process of spatial agglomeration and diffusion; (2) change of “center-periphery” effect; (3) acceleration growth of axial regions; (4) re-forming of the world and regional urban system. Based on the above theoretical analysis and the properties & requests of new economic circumstances, this article finally puts forward four philosophies emphasized by urban system planning, and forms the new frame for drawing-up of urban system planning.展开更多
China Volunteer Service Federation is a nationalfederated social organization composed ofvoluntary service organizations and volunteers.Since its founding in more than two years ago,by strengthening cooperation with d...China Volunteer Service Federation is a nationalfederated social organization composed ofvoluntary service organizations and volunteers.Since its founding in more than two years ago,by strengthening cooperation with diversifiedvoluntary service organizations at all levels,promoting the working methods innovationof voluntary service in all sectors and regions,展开更多
文摘Since the end of the Cold War, the non-proliferation work on Weapons of Mass Destruction (WMD) has gradually become the first priority in the field of arms control and international security. With the unswerving efforts by international community, enormous progress has been made in the construction .
文摘The Iraq war and the North Korean nuclear crisis are the two big events that are attracting worldwide attention. The many debates and changes that have arisen around the globe from these two issues, with the former in particular, cannot but cause
基金Under the auspices of the National Natural Science Foundation of China(No.40001007).
文摘Urban system is the spatial reflection of the inner-deep social economic movement. New economic circumstances not only make the evolution of urban system present one brand-new landscape, but also put forward a new subject for planning of urban system. This article analyzes the properties of the traditional economic process and its essential effect on urban system; it makes a complete survey on the properties of new economic circumstances and its effect on re-forming of urban system; the complicated influential process and result are concluded into the aspects, such as new growth motive force, new economic organization, new location factor and new spatial phenomenon, and its inner effect mechanism in shown as well. In this article, the change process of urban system space is explained in four aspects: (1) dissimulation in the process of spatial agglomeration and diffusion; (2) change of “center-periphery” effect; (3) acceleration growth of axial regions; (4) re-forming of the world and regional urban system. Based on the above theoretical analysis and the properties & requests of new economic circumstances, this article finally puts forward four philosophies emphasized by urban system planning, and forms the new frame for drawing-up of urban system planning.
文摘China Volunteer Service Federation is a nationalfederated social organization composed ofvoluntary service organizations and volunteers.Since its founding in more than two years ago,by strengthening cooperation with diversifiedvoluntary service organizations at all levels,promoting the working methods innovationof voluntary service in all sectors and regions,
