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The wall cracks of damaged building caused by earthquake are important to predict the extent of building damage and to reveal the process of building damage in an earthquake. As a new technology of non-contact measurement method, gound-based LiDAR can provide a new way to extract the quantitative information of wall cracks of earthquake damage buildings. In this article, one of damaged buildings of...
Cloud manufacturing transforms scattered resources and capabilities supplied by entity enterprise into integrated manufacturing cloud services, which can be realized through composing different services. A complete candidate service set is the foundation of developing a composite service with higher quality. In order to improve QoS (Quality of Service) of the composite service, the correlations between...
In modern wireless networks, dynamically optimizing the association between base stations (BSs) and users is a promising solution for performance improvement. However, a frequently changing BS-user association introduces heavy burden for network management. In this paper, we seek for balancing the flexibility and stability of the BS-user association in a green downlink MISO network. In addition to...
Any activity in a computer-supported cooperative working environment produces a set of traces. In a collaborative working context, such traces may be very voluminous and heterogeneous. They reflect all the interactive actions among the actors themselves and between the actors and the system. This paper examines what is required to study traces in the context of a collaborative working environment...
Power grid vulnerability, as the deepening and developing of network security issues, shows its great research significance. Based on the energy function theory, branch static energy function model was constructed comprehensively. Multi physical quantity was mapped to the amount of branch energy; The branch vulnerability can be reflected more accurately under different operation states; And then,...
Power grid cascading failures may cause large scale blackout and lead to serious consequences .On the basis of analyzing developing process of the typical cascading failures, branch static energy function model is constructed comprehensively, and an energy index is built to map the change of power flow. Meanwhile, a method by which the following-up cascading failures can be forecasted is proposed...
It is of great significance to study non-agricultural employment of rural labor, for improving the income level and promoting full employment of farmers. With the deepening market-oriented reforms, instead of agricultural income, non-agricultural one has become the principal part of total income of farmers. Conversion trend is clear. Based on the survey data of 83 farmers in November 2008 in Fengxin...
Risk analysis of reservoir generation dispatching plays an important role in seeking the best scheduling scheme that gives consideration to both risk and benefit. Traditional risk calculating method can't meet the needs of medium and longterm electricity generation dispatching very well, so this paper proposed probability optimization method of risk analysis, and constructed a risk evaluation index...
Selecting an appropriate conductor joint method is essential by considered conducting wire safety performance. The Analytical Hierarchy Process (AHP) method is usually used for solving multi-criteria decision-making problems. However, the traditional AHP method is incapable of handling the uncertainty and vagueness involving the mapping of one's preference to an exact number or ratio. In this paper,...
To address the information loss problem in the process of discretizing continuous attributes for one airborne radar intelligence system, this paper proposes a discretization method based on the improved FCM(Fuzzy c-means) algorithm through an analysis of the existing attribute discretization methods. This method improves the original algorithm by introducing the fuzzy decision theory and the validity...
The Fuzzy C-Means (FCM) algorithm is commonly used for clustering. The weighting exponent tn and the clustering number C are the important parameters in FCM algorithm. Conventional fuzzy clustering method must use both of the two prespecified parameters, so in this paper we analyses the original algorithm and studies on the optimal selection methods of the m and c by introducing the fuzzy decision...
In practical applications using fuzzy comprehensive evaluation system, it is very significant to define the weight values of various evaluation indexes. In this article, a new estimation matrix in analytic hierarchy process is constructed based on the fuzzy comprehensive evaluation matrix of solely index subjection, to define each weight value of evaluation indexes. Also accelerating genetic algorithm...
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