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Recommender systems have attracted much attention in last decades, which can help the users explore new items in many applications. As a popular technique in recommender systems, item recommendation works by recommending items to users based on their historical interactions. Conventional item recommendation methods usually assume that users and items are stationary, which is not always the case in...
The basic indicators of the life cycle of technology were analyzed and the generalized system for the evaluation of the life cycle phase is allocated. Indicators are considered as properties that technology must have to fit a certain stage of its existence. The existing approaches of technology development analysis were studied. The generalized classification, which is a list of indexes for the proper...
The issue of navy vessel's overall system and life-cycle effectiveness-cost analysis is presented. The life-cycle's composition of navy vessel and the procedures of effectiveness-cost analysis are explored, and the difficulties of overall effectiveness-cost analysis aimed at whole life cycle are analyzed. On this basis, the simplification rules of effectiveness and cost are proposed respectively....
Construction of smart grid pilot projects was started by SGCC in May, 2009. As a key basic node of robust smart grid, smart substation is important for smart grid construction. Assessment of smart grid pilot projects was started by SGCC in March, 2011. Assessment index system for pilot projects of smart substations is built, combined with development of smart substation technology of China, based...
In order to improve the energy efficiency reconstruction of existing buildings in University and College, the paper sets up the index of evaluation in the construction on the basis of value engineering principle, including residential, efficiency of energy-saving, economical and environmental. AHP method is also used to give weights for different indicators and cost is considered from the aspect of...
There is now considerable concern for foodservice industry about the problem of supplier selection in the background of supply chain management. A supplier selection index system based on chain catering industry was developed, and the relevance between indexes were reduced through factor analysis. Suppliers can be analyzed with the decision making model. Further more, to achieve the dynamic selection...
The capability of relationship management is given more and more considerations with the development of BPO. The ability can be described from three fields: the will of relationship management, management capability for life cycle of service contractor relationship and the performance of relationship management, from which 10 indexes for evaluation can be drawn, for example, attention of high-layer...
This paper summarizes recent explorations of the use of lifetime exergy consumption as a thermodynamically based metric for sustainability of information technologies. Other proposed thermodynamic metrics are described and compared with life cycle exergy consumption. The pros and cons of different metrics are discussed, and the advantages of life cycle exergy as a metric for information technologies...
This paper analyses the information collection in different construction project phases and give three primary solvents. The first one is to build the LC information collection standards based on the rough set theory. The second one is to settle the problem that how to arrange the sharing path of LC information by applying the sharing knowledge creation model of knowledge management theory. The third...
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