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As the integration of prevailing voice over Internet protocol (VoIP) technology and wireless local area network (WLAN), voice over WLAN (VoWLAN) is expected to experience a dramatic growth in the near future. However, increasing voice capacity of the system still remains a problem. In this paper, the voice capacity of "waiting-time dependent backoff (WDB)" algorithm proposed in our previous...
A new method for web data collection for pervasive computing is proposed by this paper. With the fast expansion of World Wide Web, dynamic web pages become more important. They are usually generated from a database through a common template. The structured data extracted from these pages with semantic annotation are valuable for information system. In this paper, we study how to label attribute on...
Based on DHP (direct hashing and pruning) algorithm, this paper presents a kind of transaction-marked DHP algorithm (TMDHP for short) to mining frequent itemsets in pervasive computing. Each element of the itemsets and the transaction's ID will be stored together in the hash-table. Using this method just need to access database once and avoids producing a deal of candidate itemsets. The experiments...
We present a framework that supports the development of pervasive cross-media applications through a clean separation of interaction design and application programming. The approach is based on a novel concept of active components that provides a lightweight mechanism for linking physical and digital entities to services. We show how the development of cross-media applications can be simplified by...
The evaluation of a mobile application must be done considering its purpose and contexts on which it is suppose to be used. In this paper we introduce a multimodal artefact manipulation tool and discuss the results of its evaluation: conducted with a sub-set of its final users, in real contexts, considering: different interaction modalities (voice recognition, gesture recognition, direct interaction,...
In a pervasive computing environment, the personalized recommender system incorporates contexts into recommendation and becomes a multiple dimensional decision expert system. In this paper, we present DFre, a distributed fuzzy reasoning engine for personalization recommendation. With difference from those existing rule-based systems, the DFre puts an emphasis on the distribution of the recommendation...
User adaptability and acceptability in heterogeneous environments are very important issues, mainly for people with disabilities. Traditional technology-push approaches fail in overcoming the needs. It becomes crucial to adopt a user-centric approach, both from methodological and technological points of views. In this paper we present a semantic matching framework for personalized service delivery...
Short message service (SMS) technology has facilitated the development and growth of text messaging. The paper presents a novel SMS-based service for supply business, called SBSoSMS. The SBSoSMS model including outsourcing order process and order state transition of SBSoSMS is discussed in detail. The SMS service design and implementation is presented too. With the integration with the SaaS typed...
In this paper a region-based image indexing and retrieval (RBIR) algorithm is presented. As a basis for the indexing, a novel spectral segmentation approach using random walks on graphs is introduced. Based on the extracted regions, characteristic features are estimated using color and texture information. The focus of this study is to improve the capture of regions so as to enhance indexing and retrieval...
The communication between agents has some special requirements. One of them is asynchronous communication. Used communication sequence process (CSP) to descript a model of agents communication with shared buffer channel. The essence of this model is very suitable for the multi-agents communication, so it is a base for our next step job. Based on the communication model, explored the distributed tasks...
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