Security problem is an important issue for Wireless Sensor Network.The paper focuses on the privacy protection of WSN applications.An anonymity enhancement tactic based on pseudonym mechanism is presented for clustere...Security problem is an important issue for Wireless Sensor Network.The paper focuses on the privacy protection of WSN applications.An anonymity enhancement tactic based on pseudonym mechanism is presented for clustered Wireless Sensor Network,which provides anonymity for both the sensors within a cluster and the cluster head nodes.Simulation experiments are launched through NS2 platform to validate the anonymity performance.The theoretical analysis and empirical study imply that the proposed scheme based on pseudonym can protect the privacies of both the sensor nodes and the cluster head nodes.The work is valuable and the experimental results are convincible.展开更多
With the accelerating process of urbanization and industrialization, the peasants for loss of land use fights has become a universal social phenomenon, the problem of landless peasants old-age security community has a...With the accelerating process of urbanization and industrialization, the peasants for loss of land use fights has become a universal social phenomenon, the problem of landless peasants old-age security community has aroused much attention. However, the presence of Hefei landless peasants pension current pension system is not perfect, the shortcomings of the current government policy, peasants lack insurance awareness and so on. This paper argucs that the land should bc constructed by the pension insurance system, improvc the land compensation policy, increase financial input and improve peasants＇ pension fund supervision and management mechanism to ensure the standardization of the system, thereby providing an important guarantee for building a socialist new urbanization.展开更多
At present, the social security problems of the disabled in most rural areas are more prominent. There is a big gap between their social security needs and the system and policies. It is an important task for the rura...At present, the social security problems of the disabled in most rural areas are more prominent. There is a big gap between their social security needs and the system and policies. It is an important task for the rural disabled to help the disabled to get rid of poverty and to solve their food and clothing. It is an important task to build a new socialist countryside and build a well-offsociety in an all-round way. It needs to be more effectively solved in the system construction of social security and social services. This paper, taking the rural of Shuyang County of Jiangsu Province as the research object, analyzes the situation and demand of the social security of the disabled in China, points out its existing problems and outs forward some countermeasures and suggestions.展开更多
Soil erosion and land degradation are global problems and pose major issues in many countries. Both soil erosion and mass movement are two forms of land degradation and humans play important roles in these geomorpholo...Soil erosion and land degradation are global problems and pose major issues in many countries. Both soil erosion and mass movement are two forms of land degradation and humans play important roles in these geomorphological processes. This paper reviews slope processes associated with mass movement and soil erosion and contributory factors, including physical and human agents. Acting together, these cause diverse geomorphological features. Slope processes are illustrated by reference to case studies from Brazil and UK. The causes and impacts of erosion are discussed, along with appropriate remedial bioengineering methods and the potential of the measures to prevent these types of environmental degradation. Although there are several agents of erosion, water is the most important one. Cultivation can promote soil erosion, due to ploughing and harvesting, which moves soil down slopes. Soil erosion and mass movement data would inform the viability of soil conservation practices. Integrated management of drainage basins offers a Dromising way forward for effective soil conservation and soil remedial bioengineering in Brazil and UK.展开更多
基金the National Natural Science Foundation of China (NSFC) under grant No.61309024,the National Key Basic Research Program of China (973) under Grant No.2013CB834204,the Fundamental Research Funds for the Central Universities under grant No.14CX06009A at China University of Petroleum
文摘Security problem is an important issue for Wireless Sensor Network.The paper focuses on the privacy protection of WSN applications.An anonymity enhancement tactic based on pseudonym mechanism is presented for clustered Wireless Sensor Network,which provides anonymity for both the sensors within a cluster and the cluster head nodes.Simulation experiments are launched through NS2 platform to validate the anonymity performance.The theoretical analysis and empirical study imply that the proposed scheme based on pseudonym can protect the privacies of both the sensor nodes and the cluster head nodes.The work is valuable and the experimental results are convincible.
文摘With the accelerating process of urbanization and industrialization, the peasants for loss of land use fights has become a universal social phenomenon, the problem of landless peasants old-age security community has aroused much attention. However, the presence of Hefei landless peasants pension current pension system is not perfect, the shortcomings of the current government policy, peasants lack insurance awareness and so on. This paper argucs that the land should bc constructed by the pension insurance system, improvc the land compensation policy, increase financial input and improve peasants＇ pension fund supervision and management mechanism to ensure the standardization of the system, thereby providing an important guarantee for building a socialist new urbanization.
文摘At present, the social security problems of the disabled in most rural areas are more prominent. There is a big gap between their social security needs and the system and policies. It is an important task for the rural disabled to help the disabled to get rid of poverty and to solve their food and clothing. It is an important task to build a new socialist countryside and build a well-offsociety in an all-round way. It needs to be more effectively solved in the system construction of social security and social services. This paper, taking the rural of Shuyang County of Jiangsu Province as the research object, analyzes the situation and demand of the social security of the disabled in China, points out its existing problems and outs forward some countermeasures and suggestions.
基金the financial support of the Brazilian Research Council(CNPq)
文摘Soil erosion and land degradation are global problems and pose major issues in many countries. Both soil erosion and mass movement are two forms of land degradation and humans play important roles in these geomorphological processes. This paper reviews slope processes associated with mass movement and soil erosion and contributory factors, including physical and human agents. Acting together, these cause diverse geomorphological features. Slope processes are illustrated by reference to case studies from Brazil and UK. The causes and impacts of erosion are discussed, along with appropriate remedial bioengineering methods and the potential of the measures to prevent these types of environmental degradation. Although there are several agents of erosion, water is the most important one. Cultivation can promote soil erosion, due to ploughing and harvesting, which moves soil down slopes. Soil erosion and mass movement data would inform the viability of soil conservation practices. Integrated management of drainage basins offers a Dromising way forward for effective soil conservation and soil remedial bioengineering in Brazil and UK.
