With the rapid development of Web2.0 technology, more and more social annotation systems are emerging, such as Del.icio.us, Flickr, YouTube, and CiteULike. These systems help users to manage and share their digital re...With the rapid development of Web2.0 technology, more and more social annotation systems are emerging, such as Del.icio.us, Flickr, YouTube, and CiteULike. These systems help users to manage and share their digital resources, and have attracted a lot of users to annotate the resources with tags and bookmarks, which result in a large scale of tag data. Due to the exponential increase of social annotations, all the users are facing the same problem: How can we explore the desired resources efficiently in such a large tag dataset? Since the traditional methods such as tag cloud view and annotation match work well only in small annotation dataset, this paper studies the relationships of tag-tag, tag-resource and resource-resource through the co-occurrences and proposes a new efficient way for users to organize and explore the literature resources. Our research mainly focuses on two aspects:1) The hidden semantic relationships of popular tags and their relevant literature resources;2) the computing of literature resources similarity given a specific literature. A prototype system named PKUSpace is implemented and shows promising results.展开更多
Metacognitive strategies are regarded as advanced strategies in all the learning strategies.This study focuses on the application of metacognitive strategies in English listening in the web-based self-access learning ...Metacognitive strategies are regarded as advanced strategies in all the learning strategies.This study focuses on the application of metacognitive strategies in English listening in the web-based self-access learning environment(WSLE) and tries to provide some references for those students and teachers in the vocational colleges.展开更多
Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic environments.The aim of this...Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic environments.The aim of this study was to analyze the relationship between POM and phytoplankton(isotopic values and chlorophyll concentration)and abiotic variables during dry and rainy seasons.Sampling was conducted in rivers and lagoons in the floodplain of the Upper ParanáRiver.We found a greater difference in ^(δ13)C values of POM between sampling points than between seasons,indicating that the composition of regional sources influences the composition of POM more than dry and rainy seasons.In addition,the concentration of chlorophyll during the dry season was positively correlated with ^(δ13)C values during that rainy period.Additionally,we found a relationship between factors limiting the growth of phytoplankton and ^(δ13)C values of POM,such as phosphate ions,indicating that variables that regulate phytoplankton growth tend to influence the composition of POM in river floodplains.Therefore,maintaining the variables that regulate the phytoplankton community is of fundamental importance for the composition of POM,an important energy source in aquatic environments.展开更多
The design and development Web 2.0-based education management system will satisfy with the school education management of informationization, scientific and modernized request, the auxiliary education superintendent c...The design and development Web 2.0-based education management system will satisfy with the school education management of informationization, scientific and modernized request, the auxiliary education superintendent carries on the correct decision-making, enhance the education management working efficiency. This system has used the quite mature development technology at present, the function of realizes is more perfect, usable; The man-machine interaction is friendly and operate easily. Its application, enhanced the administrator and teacher＇s working efficiency greatly, reduces the working strength, simultaneously has also provided the better education condition for the student. With the rapid development of network,, education management system will be more widespread in the education of education application, it will create a new situation of the education management, bring a brighter prospect of the application.展开更多
This paper discussed how Web 2.0 technologies relate to human’s information behavior.Firstly,an overview of information behavior is given by previous studies,meanwhile,which has found differences between information ...This paper discussed how Web 2.0 technologies relate to human’s information behavior.Firstly,an overview of information behavior is given by previous studies,meanwhile,which has found differences between information seeking and information searching.While featured web2.0-based tools improve user’s communication experience,especially reflecting on information seeking and information sharing.It is possible that web 2.0 applications provide an interactive platform to promote human’s information behavior effectively.展开更多
Comparing with the traditional network education supporting system, this system introduced by the paper adds to many functions based on web 2.0 besides of traditional teaching functions, such as Blog, RSS, etc. These ...Comparing with the traditional network education supporting system, this system introduced by the paper adds to many functions based on web 2.0 besides of traditional teaching functions, such as Blog, RSS, etc. These functions accelerate that learner interactive with system. The practice proves that network education supporting system based on web 2.0 can improve learner＇s positivity of active studying and improves the network education＇s quality.展开更多
In the era of Web2.0, AJAX as one of the core technology to provide asynchronous communication with the server＇s ability to solve most of the Web site to force the user to enter the ＂submit, wait for redisplay proce...In the era of Web2.0, AJAX as one of the core technology to provide asynchronous communication with the server＇s ability to solve most of the Web site to force the user to enter the ＂submit, wait for redisplay process, so that user from requestfreed response cycle, ultimately allows developers and designers to use standard HTML / CSS / JavaScript to create a ＂desktop style Web applications. According AJAX principles and characteristics, and the combination of educational administration and educational management system based on AJAX technology solutions.展开更多
This paper discusses the new thought about failure management system of enterprise equipment based on Web Environment. That is how to utilize the Web technology to make a diagnosis and provide maintenance service rapi...This paper discusses the new thought about failure management system of enterprise equipment based on Web Environment. That is how to utilize the Web technology to make a diagnosis and provide maintenance service rapidly for normal operation of enterprises production when some equipment is out of order. Besides, an application example is introduced.展开更多
Web 2.0的出现使信息构建(IA)的内容发生了深刻变化,IA已进入"信息构建2.0"(IA2.0)阶段。在IA2.0阶段,IA作为一门学科、一种角色和一类社团的协调统一体而存在,它强调真正"以用户为中心"和"丰富的用户体验&qu...Web 2.0的出现使信息构建(IA)的内容发生了深刻变化,IA已进入"信息构建2.0"(IA2.0)阶段。在IA2.0阶段,IA作为一门学科、一种角色和一类社团的协调统一体而存在,它强调真正"以用户为中心"和"丰富的用户体验"的核心理念,以满足新环境下的用户需求。Web2.0网站的IA,是IA2.0的典型应用,也是IA2.0阶段研究的主要内容,本文将其称为网站IA2.0。文中设计了一个网站IA2.0模型,并进行了简单的实例分析。展开更多
基金supported by the Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.20070001073)the National Natural Science Foundation of China(Grant Nos.90412010 and60773162)
文摘With the rapid development of Web2.0 technology, more and more social annotation systems are emerging, such as Del.icio.us, Flickr, YouTube, and CiteULike. These systems help users to manage and share their digital resources, and have attracted a lot of users to annotate the resources with tags and bookmarks, which result in a large scale of tag data. Due to the exponential increase of social annotations, all the users are facing the same problem: How can we explore the desired resources efficiently in such a large tag dataset? Since the traditional methods such as tag cloud view and annotation match work well only in small annotation dataset, this paper studies the relationships of tag-tag, tag-resource and resource-resource through the co-occurrences and proposes a new efficient way for users to organize and explore the literature resources. Our research mainly focuses on two aspects:1) The hidden semantic relationships of popular tags and their relevant literature resources;2) the computing of literature resources similarity given a specific literature. A prototype system named PKUSpace is implemented and shows promising results.
文摘Metacognitive strategies are regarded as advanced strategies in all the learning strategies.This study focuses on the application of metacognitive strategies in English listening in the web-based self-access learning environment(WSLE) and tries to provide some references for those students and teachers in the vocational colleges.
基金Supported by the Research Nucleus in LimnologyIchthyology and Aquaculture (NUPELIA) for logistic support+4 种基金the Laboratory of Energetic Ecology and the Long-term Ecological Research Program (PELD/CNPq)Site 6-PIAP (upper ParanáRiver floodplain)PROEXUEMand Fundação Araucária for the scholarship
文摘Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic environments.The aim of this study was to analyze the relationship between POM and phytoplankton(isotopic values and chlorophyll concentration)and abiotic variables during dry and rainy seasons.Sampling was conducted in rivers and lagoons in the floodplain of the Upper ParanáRiver.We found a greater difference in ^(δ13)C values of POM between sampling points than between seasons,indicating that the composition of regional sources influences the composition of POM more than dry and rainy seasons.In addition,the concentration of chlorophyll during the dry season was positively correlated with ^(δ13)C values during that rainy period.Additionally,we found a relationship between factors limiting the growth of phytoplankton and ^(δ13)C values of POM,such as phosphate ions,indicating that variables that regulate phytoplankton growth tend to influence the composition of POM in river floodplains.Therefore,maintaining the variables that regulate the phytoplankton community is of fundamental importance for the composition of POM,an important energy source in aquatic environments.
文摘The design and development Web 2.0-based education management system will satisfy with the school education management of informationization, scientific and modernized request, the auxiliary education superintendent carries on the correct decision-making, enhance the education management working efficiency. This system has used the quite mature development technology at present, the function of realizes is more perfect, usable; The man-machine interaction is friendly and operate easily. Its application, enhanced the administrator and teacher＇s working efficiency greatly, reduces the working strength, simultaneously has also provided the better education condition for the student. With the rapid development of network,, education management system will be more widespread in the education of education application, it will create a new situation of the education management, bring a brighter prospect of the application.
文摘This paper discussed how Web 2.0 technologies relate to human’s information behavior.Firstly,an overview of information behavior is given by previous studies,meanwhile,which has found differences between information seeking and information searching.While featured web2.0-based tools improve user’s communication experience,especially reflecting on information seeking and information sharing.It is possible that web 2.0 applications provide an interactive platform to promote human’s information behavior effectively.
文摘Comparing with the traditional network education supporting system, this system introduced by the paper adds to many functions based on web 2.0 besides of traditional teaching functions, such as Blog, RSS, etc. These functions accelerate that learner interactive with system. The practice proves that network education supporting system based on web 2.0 can improve learner＇s positivity of active studying and improves the network education＇s quality.
文摘In the era of Web2.0, AJAX as one of the core technology to provide asynchronous communication with the server＇s ability to solve most of the Web site to force the user to enter the ＂submit, wait for redisplay process, so that user from requestfreed response cycle, ultimately allows developers and designers to use standard HTML / CSS / JavaScript to create a ＂desktop style Web applications. According AJAX principles and characteristics, and the combination of educational administration and educational management system based on AJAX technology solutions.
文摘This paper discusses the new thought about failure management system of enterprise equipment based on Web Environment. That is how to utilize the Web technology to make a diagnosis and provide maintenance service rapidly for normal operation of enterprises production when some equipment is out of order. Besides, an application example is introduced.
