With the rapid development of location-aware devices such as smart phones,Location-Based Services(LBSs) are becoming increasingly popular. Users can enjoy convenience by sending queries to LBS servers and obtaining se...With the rapid development of location-aware devices such as smart phones,Location-Based Services(LBSs) are becoming increasingly popular. Users can enjoy convenience by sending queries to LBS servers and obtaining service information that is nearby.However, these queries may leak the users' locations and interests to the un-trusted LBS servers, leading to serious privacy concerns. In this paper, we propose a Privacy-Preserving Pseudo-Location Updating System(3PLUS) to achieve k-anonymity for mobile users using LBSs. In 3PLUS, without relying on a third party, each user keeps pseudo-locations obtained from both the history locations and the encountered users, and randomly exchanges one of them with others when encounters occur. As a result, each user's buffer is disordered. A user can obtain any k locations from the buffer to achieve k-anonymity locally. The security analysis shows the security properties and our evaluation results indicate that the user's privacy is significantly improved.展开更多
Traumatic ocular muscle paralysis is nota rare condition in clinical practice. However,complete recovery is very difficult. Withacupuncture at the tragus apex, we treated 16cases in the period of 1992-1996, withsatisf...Traumatic ocular muscle paralysis is nota rare condition in clinical practice. However,complete recovery is very difficult. Withacupuncture at the tragus apex, we treated 16cases in the period of 1992-1996, withsatisfactory therapeutic results reported asfollows.展开更多
Chinese idioms are the essence of the Chinese language, the crystallization of human wisdom and the important cartier of national culture. Through the structure, content and meaning of Chinese idioms, we can see vario...Chinese idioms are the essence of the Chinese language, the crystallization of human wisdom and the important cartier of national culture. Through the structure, content and meaning of Chinese idioms, we can see various forms of the history and culture of the Han nationality. Observe national culture through the structure, content, meaning of Chinese idioms, namely the phenomenon of the linguistic phenomenon and culture phenomenon, we focus on elaborating Chinese idioms and cultural relationship between a Chinese idiom and Chinese culture.展开更多
This field study in AI aqeb town and its surroundings is a result of joint research between two scientific fields： anthropology and architecture, where the researchers interested in the local community in terms of so...This field study in AI aqeb town and its surroundings is a result of joint research between two scientific fields： anthropology and architecture, where the researchers interested in the local community in terms of social, stability method, patterns of production and its transformations, as well as in physical culture for population in traditional, heritage and modern housing, and the reason to choose AI aqeb is to test the stability of the nature of pastoral groups in A1 aqeb basin and valley which are available on pastures and water sources and the remains of ancient centers of human settlement which provides building materials to create traditional dwellings made up of basalt stones and mud where the researcher use the field surveys methodology in the target area through field trips and description of heritage sites and architectural field studies methodology in terms of description, analysis and measuring and drawing. And study populations and pastoral aspects, features of the surface and material evidence. The Bedouin human interacts with its environment depending on its own style in simple techniques to meet his basic needs of physical, cultural and the need for shelter and housing.展开更多
基金supported by the National Natural Science Foundation of China under Grants No.61003300,No.61272457the Fundamental Research Funds for the Central Universities under Grant No.K5051201041the China 111 Project under Grant No.B08038
文摘With the rapid development of location-aware devices such as smart phones,Location-Based Services(LBSs) are becoming increasingly popular. Users can enjoy convenience by sending queries to LBS servers and obtaining service information that is nearby.However, these queries may leak the users' locations and interests to the un-trusted LBS servers, leading to serious privacy concerns. In this paper, we propose a Privacy-Preserving Pseudo-Location Updating System(3PLUS) to achieve k-anonymity for mobile users using LBSs. In 3PLUS, without relying on a third party, each user keeps pseudo-locations obtained from both the history locations and the encountered users, and randomly exchanges one of them with others when encounters occur. As a result, each user's buffer is disordered. A user can obtain any k locations from the buffer to achieve k-anonymity locally. The security analysis shows the security properties and our evaluation results indicate that the user's privacy is significantly improved.
文摘Traumatic ocular muscle paralysis is nota rare condition in clinical practice. However,complete recovery is very difficult. Withacupuncture at the tragus apex, we treated 16cases in the period of 1992-1996, withsatisfactory therapeutic results reported asfollows.
文摘Chinese idioms are the essence of the Chinese language, the crystallization of human wisdom and the important cartier of national culture. Through the structure, content and meaning of Chinese idioms, we can see various forms of the history and culture of the Han nationality. Observe national culture through the structure, content, meaning of Chinese idioms, namely the phenomenon of the linguistic phenomenon and culture phenomenon, we focus on elaborating Chinese idioms and cultural relationship between a Chinese idiom and Chinese culture.
文摘This field study in AI aqeb town and its surroundings is a result of joint research between two scientific fields： anthropology and architecture, where the researchers interested in the local community in terms of social, stability method, patterns of production and its transformations, as well as in physical culture for population in traditional, heritage and modern housing, and the reason to choose AI aqeb is to test the stability of the nature of pastoral groups in A1 aqeb basin and valley which are available on pastures and water sources and the remains of ancient centers of human settlement which provides building materials to create traditional dwellings made up of basalt stones and mud where the researcher use the field surveys methodology in the target area through field trips and description of heritage sites and architectural field studies methodology in terms of description, analysis and measuring and drawing. And study populations and pastoral aspects, features of the surface and material evidence. The Bedouin human interacts with its environment depending on its own style in simple techniques to meet his basic needs of physical, cultural and the need for shelter and housing.
