This paper focuses on the economic development and urban morphology as well as its impact on the transportation system during the urban expansion of Shanghai in the last more than 20 years(1986-2008).Based on data fro...This paper focuses on the economic development and urban morphology as well as its impact on the transportation system during the urban expansion of Shanghai in the last more than 20 years(1986-2008).Based on data from 3 comprehensive transport surveys of Shanghai since 1986,the changes in residential trip demand,vehicle use,and the spatial distribution of trips were studied to understand the demands on the transportation system.The factors contributing to those changes in transportation demand were discussed,by which the conclusions were arrived:1) economic development promotes population growth and stimulates residential trip demand greatly;2) unsynchronized migration of population and job from central district to periphery district of Shanghai make trips and congestion diffuse in the same way;and 3) urban sprawl from a city center encourages the single-occupant vehicle mode,which imposes greater pressure on the roadway system.It is concluded that urban development should coordinate with the transportation system planning and expansion.展开更多
In recent years, the quantity of our country＇s municipal damestic wustes increase rapidly, but the waste disposal still has problems, such as the simple way of processing, wasting the resources, the serious environme...In recent years, the quantity of our country＇s municipal damestic wustes increase rapidly, but the waste disposal still has problems, such as the simple way of processing, wasting the resources, the serious environmental pollution and so on. By holding waste minimization as the center, the developed countries have formed perfect waste management system, Based on analyzing the status quo and problems of processing in our country, on the principle of benefit, scale, waste minimization, reclamation and hazard-free treatment, according to the recycling model of processing, the article has constructed ant country＇s domestic wastes management system, proposed the meusures of promoting the operation of system. It has realized the traasformatian of waste management system from terminal disposal to source reduction. ewhieved the goals, including domestic wastes categorizing and reclaiming, industrialization and non-pollution processing, and finally brought sustainable development for resources, environment, economy and society.展开更多
The current,with the sustained and rapid development of education in our country, private colleges and universities gradually become a part of our school,it is one of the indispensable important strength of higher edu...The current,with the sustained and rapid development of education in our country, private colleges and universities gradually become a part of our school,it is one of the indispensable important strength of higher education front.Jiangxi Province in recent years, the pace of development of civilian run colleges and universities continue to accelerate.The emergence of this new things,comply with the requirements of the era of reform and opening up,at the same time,it also complies with the demand of talent in our country is in the rapid development of economic society,provides the necessary basic talents for local economic development.Allow all doubt,private colleges and universities in Jiangxi province has become an important part of our province education.In the private teaching at the present stage,development of public sports teaching to improve students＇ physical quality is of great significance to promote the students comprehensive development.However, some private colleges and universities sports teaching situation is not very satisfactory.This paper analyzes the current situation of Public Physical Education Teaching of private higher education in Jiangxi Province,and puts forward the corresponding reform and innovation strategy.展开更多
This paper studied the residents＇ level of satisfaction in public housing units in Shenyang of China which aimed to identify how each housing unit feature correlates with the residents＇ overall satisfaction and impl...This paper studied the residents＇ level of satisfaction in public housing units in Shenyang of China which aimed to identify how each housing unit feature correlates with the residents＇ overall satisfaction and implication on policy and design. The discussion is based on a questionnaire survey conducted in 2011. This research concluded that more residents were satisfied with the housing unit features than those who were dissatisfied, while some remarkable differences could be observed if comparative analysis between two different public housing types in China were studied. The affordable housing residents are generally more satisfied with housing unit features than those living in low-rent housing. The most dissatisfying feature is the living room, followed by unit size and the floor plan. Additionally, the living room and the floor plans were features which were highly and positively correlated to the residents＇ overall satisfaction of housing unit features. Consequently, improving the living room size and the design of housing unit floor plans would clearly be beneficial to alleviating residents＇ dissatisfaction to the housing units.展开更多
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
The economic benefits of insect-resistant genetically modified(GM) crops have been well documented, but the impact of such crops and the consequent reduction in pesticide use on farmers' health remains largely unk...The economic benefits of insect-resistant genetically modified(GM) crops have been well documented, but the impact of such crops and the consequent reduction in pesticide use on farmers' health remains largely unknown. Through the analysis of the data collected from the physical examination from farmers in China, we show that GM rice significantly reduces pesticide use and the resultant not only visible but also invisible adverse effects on farmers' neurological, hematological, and electrolyte system. Hence, the commercialization of GM rice is expected to improve the health of farmers in developing countries, where pesticide application is necessary to mitigate crop loss.展开更多
基金Under the auspices of National Natural Science Foundation of China (No 70803034)
文摘This paper focuses on the economic development and urban morphology as well as its impact on the transportation system during the urban expansion of Shanghai in the last more than 20 years(1986-2008).Based on data from 3 comprehensive transport surveys of Shanghai since 1986,the changes in residential trip demand,vehicle use,and the spatial distribution of trips were studied to understand the demands on the transportation system.The factors contributing to those changes in transportation demand were discussed,by which the conclusions were arrived:1) economic development promotes population growth and stimulates residential trip demand greatly;2) unsynchronized migration of population and job from central district to periphery district of Shanghai make trips and congestion diffuse in the same way;and 3) urban sprawl from a city center encourages the single-occupant vehicle mode,which imposes greater pressure on the roadway system.It is concluded that urban development should coordinate with the transportation system planning and expansion.
文摘In recent years, the quantity of our country＇s municipal damestic wustes increase rapidly, but the waste disposal still has problems, such as the simple way of processing, wasting the resources, the serious environmental pollution and so on. By holding waste minimization as the center, the developed countries have formed perfect waste management system, Based on analyzing the status quo and problems of processing in our country, on the principle of benefit, scale, waste minimization, reclamation and hazard-free treatment, according to the recycling model of processing, the article has constructed ant country＇s domestic wastes management system, proposed the meusures of promoting the operation of system. It has realized the traasformatian of waste management system from terminal disposal to source reduction. ewhieved the goals, including domestic wastes categorizing and reclaiming, industrialization and non-pollution processing, and finally brought sustainable development for resources, environment, economy and society.
文摘The current,with the sustained and rapid development of education in our country, private colleges and universities gradually become a part of our school,it is one of the indispensable important strength of higher education front.Jiangxi Province in recent years, the pace of development of civilian run colleges and universities continue to accelerate.The emergence of this new things,comply with the requirements of the era of reform and opening up,at the same time,it also complies with the demand of talent in our country is in the rapid development of economic society,provides the necessary basic talents for local economic development.Allow all doubt,private colleges and universities in Jiangxi province has become an important part of our province education.In the private teaching at the present stage,development of public sports teaching to improve students＇ physical quality is of great significance to promote the students comprehensive development.However, some private colleges and universities sports teaching situation is not very satisfactory.This paper analyzes the current situation of Public Physical Education Teaching of private higher education in Jiangxi Province,and puts forward the corresponding reform and innovation strategy.
文摘This paper studied the residents＇ level of satisfaction in public housing units in Shenyang of China which aimed to identify how each housing unit feature correlates with the residents＇ overall satisfaction and implication on policy and design. The discussion is based on a questionnaire survey conducted in 2011. This research concluded that more residents were satisfied with the housing unit features than those who were dissatisfied, while some remarkable differences could be observed if comparative analysis between two different public housing types in China were studied. The affordable housing residents are generally more satisfied with housing unit features than those living in low-rent housing. The most dissatisfying feature is the living room, followed by unit size and the floor plan. Additionally, the living room and the floor plans were features which were highly and positively correlated to the residents＇ overall satisfaction of housing unit features. Consequently, improving the living room size and the design of housing unit floor plans would clearly be beneficial to alleviating residents＇ dissatisfaction to the housing units.
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.
基金supported by the International Development Research Center(106160-002)the National Natural Science Foundation of China(71333013,71210004)National Key Program on Genetically Modified New Varieties(2011ZX08015-002A)
文摘The economic benefits of insect-resistant genetically modified(GM) crops have been well documented, but the impact of such crops and the consequent reduction in pesticide use on farmers' health remains largely unknown. Through the analysis of the data collected from the physical examination from farmers in China, we show that GM rice significantly reduces pesticide use and the resultant not only visible but also invisible adverse effects on farmers' neurological, hematological, and electrolyte system. Hence, the commercialization of GM rice is expected to improve the health of farmers in developing countries, where pesticide application is necessary to mitigate crop loss.
