The concept and the characteristic of spread spectrum technology of knowledge network based on information integration environment are given at first. And the basic principle of the wireless network of knowledge and i...The concept and the characteristic of spread spectrum technology of knowledge network based on information integration environment are given at first. And the basic principle of the wireless network of knowledge and information is recommended. Then a project alternatives using the spread spectrum technology and wireless network is given to build a across-the abroad knowledge network system.展开更多
This letter presents a k-party RSA key sharing scheme and the related algorithms are presented. It is shown that the shared key can be generated in such a collaborative way that the RSA modulus is publicly known but n...This letter presents a k-party RSA key sharing scheme and the related algorithms are presented. It is shown that the shared key can be generated in such a collaborative way that the RSA modulus is publicly known but none of the parties is able to decrypt the enciphered message individually.展开更多
A number of empirical studies in Euro-American region consistently demonstrate that, parks and open space have a positive impact on property values. However, this effect has not been investigated in Beijing, China. An...A number of empirical studies in Euro-American region consistently demonstrate that, parks and open space have a positive impact on property values. However, this effect has not been investigated in Beijing, China. And the public and city managers often ignore or underestimate the role of urban green spaces. This paper surveyed the relationship between the average house prices of 76 residential areas and 14 parks in Beijing, and measured the total benefits of 18 070 ha public green spaces on residential property value, by using the inventory data of urban green spaces （2009） and GIS techniques. Results showed that the residential property values located 850-1604 meters away from parks achieved a 0.5% to 14.1% increase in sales price. The overall benefit of Beijing’s public green spaces on residential property was 2.86 billion CNY （1 USD=6.83 CNY）, and the average benefit of per hectare public green space was 0.16 million CNY, corresponding to 1.8-3.9 times of the maintenance cost of green space in Beijing. Therefore, there is chance for local governments to increase property tax revenues due to the creation and maintenance of urban green spaces.展开更多
Two tripartite schemes are put forward with shared entanglements and Local Operation and Classical Communication (LOCC) for sharing an operation on a remote target sate.The first scheme uses a Bell and a symmetric W s...Two tripartite schemes are put forward with shared entanglements and Local Operation and Classical Communication (LOCC) for sharing an operation on a remote target sate.The first scheme uses a Bell and a symmetric W states as quantum channels,while the second replaces the symmetric W state by an asymmetric one.Both schemes are treated and compared from the aspects of quantum resource consumption,operation complexity,classical resource consumption,success probability and efficiency.It is found that the latter scheme is better than the former one.Particularly,the sharing can be achieved only probabilistically with the first scheme deterministically with the second one.展开更多
In real-world applications, some systems are composed of independent production units that use different inputs to produce outputs. The conventional data envelopment analysis model measures the relative efficiencies o...In real-world applications, some systems are composed of independent production units that use different inputs to produce outputs. The conventional data envelopment analysis model measures the relative efficiencies of a set of decision-making units with exact values of both inputs and outputs. In this paper, we propose an approach to assess parallel production systems with shared sources and bounded interval data, and also we provide a model that focuses on calculating the efficiency of the whole of a system along with the efficiencies of its components.展开更多
基金This paper is supported by National Natural Science Foundation of China （NSFC） （No. 70472039, 70272023）.
文摘The concept and the characteristic of spread spectrum technology of knowledge network based on information integration environment are given at first. And the basic principle of the wireless network of knowledge and information is recommended. Then a project alternatives using the spread spectrum technology and wireless network is given to build a across-the abroad knowledge network system.
基金Supported by the National Natural Science Foundation of China (No.69825102)
文摘This letter presents a k-party RSA key sharing scheme and the related algorithms are presented. It is shown that the shared key can be generated in such a collaborative way that the RSA modulus is publicly known but none of the parties is able to decrypt the enciphered message individually.
基金funded by the Beijing Municipal Bureau of Landscape and Forestry and Major State Basic Research Development Program of China (No. 2009CB421106)
文摘A number of empirical studies in Euro-American region consistently demonstrate that, parks and open space have a positive impact on property values. However, this effect has not been investigated in Beijing, China. And the public and city managers often ignore or underestimate the role of urban green spaces. This paper surveyed the relationship between the average house prices of 76 residential areas and 14 parks in Beijing, and measured the total benefits of 18 070 ha public green spaces on residential property value, by using the inventory data of urban green spaces （2009） and GIS techniques. Results showed that the residential property values located 850-1604 meters away from parks achieved a 0.5% to 14.1% increase in sales price. The overall benefit of Beijing’s public green spaces on residential property was 2.86 billion CNY （1 USD=6.83 CNY）, and the average benefit of per hectare public green space was 0.16 million CNY, corresponding to 1.8-3.9 times of the maintenance cost of green space in Beijing. Therefore, there is chance for local governments to increase property tax revenues due to the creation and maintenance of urban green spaces.
基金Supported by the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No.20103401110007National Natural Science Foundation of China under Grant Nos.10874122,10975001,51072002,and 51272003+1 种基金the Program for Excellent Talents at the University of Guangdong Province(Guangdong Teacher Letter[1010]No.79)the 211 Project of Anhui University
文摘Two tripartite schemes are put forward with shared entanglements and Local Operation and Classical Communication (LOCC) for sharing an operation on a remote target sate.The first scheme uses a Bell and a symmetric W states as quantum channels,while the second replaces the symmetric W state by an asymmetric one.Both schemes are treated and compared from the aspects of quantum resource consumption,operation complexity,classical resource consumption,success probability and efficiency.It is found that the latter scheme is better than the former one.Particularly,the sharing can be achieved only probabilistically with the first scheme deterministically with the second one.
文摘In real-world applications, some systems are composed of independent production units that use different inputs to produce outputs. The conventional data envelopment analysis model measures the relative efficiencies of a set of decision-making units with exact values of both inputs and outputs. In this paper, we propose an approach to assess parallel production systems with shared sources and bounded interval data, and also we provide a model that focuses on calculating the efficiency of the whole of a system along with the efficiencies of its components.
