The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The purpose of this paper is to provide a solution of extracting appropriate keywords to identify meaningful learning-contents on the Web. There are some issues in identifying documents that have learning content. Firstly, the documents need to be identified according to the learning area of a student's school year. Secondly, the documents need to be identified according to the learning area that...
In this paper a reflection on the relationships among random-walk-with-back step, lazy walk and traditional Page Rank is made. It is demonstrated that though all of them differ semantically, they still can be computed using the very same algorithm.
This research proposes a formal framework of new knowledge expertise with mass amateurization and analyzes its impact on Internet-based knowledge markets. Specifically, the new definition of knowledge expertise consists of three major components: primary expertise, searching expertise, and learning expertise. Due to the effect of mass amateurization, questions posted by knowledge seekers on Internet-based...
With rapid development of internet, more and more consumers choose to shop from different channels, such as offline channel and online channel. Some consumers prefer shopping through offline channel because they want to experience the products' quality in person, while other consumers would like to shop online because they care more about the efficiency of shopping. There are several factors that...
Nowadays, more and more web users use global search engines, such as Google and Bing, to hunt required information through query. At the same time, many Community-based Question Answering (C-Q&A) web sites supply large repositories of valuable information, knowledge and inner search engines to response the queries sent from users. In this paper, we do an exploratory analysis of the users'...
Group buying price (GBP) mechanism is a useful pricing mechanism in online selling. In this study, we focus on the case that buyers are small retailers, and there are two suppliers in the market. Retailers' ordering choice is discussed, and we also study how the supplier should set the GBP price curve. The conclusion shows that to beat the fixed price, the supplier should not use a small slope price...
Different form the traditional online digital goods model, this paper considers multi-attribute and online characters of digital goods. A novel on-line auction model is provided to solve the asymmetric information problem between the sellers and buyers when there are multiple decision variables. The price-performance value is introduced into this model to help the buyers to evaluate the multi-attribute...
High schools have rapidly adapted computers in their administration, management and academy. School management uses papers and computers as tools to store the administrative and management data. However computers are not used to analyze data and output information. Therefore, e-School Management System (e-SMS) is developed to facilitate teaching and administration staffs to manage school activities...
Along with the boom of information, it is an important task to summarize the valuable information of opinionated texts. Firstly, we model the opinionated text by TAM and get the topic and aspect attribute of every sentence. Secondly, we successively used the basic LexRank, Comparative LexRank, Topic-sensitive tf*idf LexRank and Topic-sensitive tf*idf & Comparative LexRank to generate summary....
The Internet's routing system is facing strong stresses due to the rapid growth of Internet scaling and its poor fundamental scaling properties. Compact routing may be a good research field that can resolve the limits of routing scalability and design. In this paper, we devise a kind of compact routing scheme for the structure of the Internet AS graph. The routing scheme is based on message passing...
This article presents the development of an architecture for a remote educational experiment concerning the speed control applied to a direct current motor. The proposed architecture is based on the use of an Arduino Uno and Ethernet Shield, whose function is to interface between the experiment and the Internet. The user can access the control experiment through an application developed in Java, which...
The paper advances the correlation between website quality and behavioral and attitudinal outcomes of transaction under the online context. Meanwhile, it also suggests the moderate effect of income and risk perception between website quality and outcome of transaction. Positive analysis is implemented by collecting data from Taobao.com, and the hypothesis are tested following the regression analysis...
In most of e-commerce site, evaluation systems are employed to evaluate each user after the tradings. Normally, seller's evaluation score is shown in e-commerce site that is computed based on score given by buyers. In recent e-commerce site, the evaluation is based on multiple attributes and buyers give their thinking for each attribute. In this viewpoint, the seller evaluation in e-commerce is collected...
This paper studies the bidding behavior and the expected profits in the pay-per-bid auctions. By collecting auction data on bidxi.com, we make the two-step cluster analysis to divide bidders into irrational bidders and rational bidders. It shows that no matter what strategies bidders are used, their expected profits are always negative. Then, we analyze the impact of some factors on the auction price...
6LoWPAN is a new protocol that enables IPv6 to be used in wireless sensor networks. However, the hierarchical routing over 6LoWPAN (HiLOW) proposed by the IETF 6LoWPAN Working Group may be too simplified due to the use of dynamically assigned 16-bit short addresses in 6LoWPAN to establish a hierarchical tree between parent and children nodes for packet transmission since performance would degrade...
Some results of researches show that consumers are inclined to reduce perceived risks rather than maximize perceived benefits when they are making purchase decisions. After a mass of questionnaire surveys through the campus students, the effect of Internet factor to perceived risk and perceived risk to purchasing intention were revealed by using structural equation model (SEM) analysis. In the end,...
This paper divides the internet promotion into two categories, and analyses the consumer choices with different experience internet purchases adapting the method of researching investigation. In order to build market share, highlight distinct advantages and increase purchase rate of customer in the increasingly competitive market, the results of the research provide some advice to online retailer.
We investigate security of a certain simple and fast scheme of distributed archive. The scheme, namely Uniformly Random Distributed Archive (URDA), distributes original source data across multiple storages in the Internet with redundancy. The most important feature of URDA is its stochastic process to determine storages to which fragments of the original data are to be delivered. By delivering each...
Poor eyesight is one of the common and frequently-occurring phenomenon among college students. College students' learning pressure is very great, the development of informationization is developed, most students surf the net frequently and so on, and these factors will affect the vision of college students. Based on the questionnaire of college students' vision and influence factors, this paper used...
With the development of E-commerce, especially the rapid growth of C2C market, trust plays the key role in the electronic trade. But now, there are still some shortcomings at the on-line evaluation mechanism. Based on the analysis of the trust relationship features, this paper raises the trust evaluation principles in C2C E-commerce. Then the paper proposes a new trust evaluation method for C2C E-commerce,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.