With the rapid development of network economy, C2C ecommerce shows increasingly prominent in the consumer goods market. At the same time it has brought a series of new problems about credit and security of transaction...
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With the rapid development of network economy, C2C ecommerce shows increasingly prominent in the consumer goods market. At the same time it has brought a series of new problems about credit and security of transactions. This paper analyses the shortcomings of existing credit evaluation system;presents an improved model of credit evaluation against the problems and introduces the weight of credit of evaluating user itself, the weight of amount of transaction and the multidimensional credit evaluating algorithm. In order to insure the credit rating more valuable in the improved evaluation model, the credit evaluating indicators and their weighting class are redesigned in the improved credit evaluating model. Finally, a calculation instance of credit evaluation was carried out to verify the effectiveness and correctness of the improved evaluation model.
This paper deals with the optimal evaluation algorithms for voltage regulation in the case where new dispersed sources are operated in distribution systems. It is very difficult and complicated to handle the interconn...
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ISBN:
(纸本)9781424452293
This paper deals with the optimal evaluation algorithms for voltage regulation in the case where new dispersed sources are operated in distribution systems. It is very difficult and complicated to handle the interconnection issues for proper voltage managements, because professional skills and enormous amounts of data for the evaluations are required. The typical evaluation algorithms mainly depending on human ability and quality of data acquired, inevitably cause the different results for the same issue, so unfair and subjective evaluations are unavoidable. In order to overcome these problems, the paper proposes reasonable and general algorithms based on the standard model system and proper criterion, which offers the fair and objective evaluations in any case. Under these conditions, this paper proposes a proper evaluation algorithm for the voltage management at normal and emergency conditions. The results from a case study show that the proposed methods can be a practical tool for the voltage management in distribution systems including dispersed sources.
Aiming at the two key problems during the process of the disassembly analysis, which are the combination explosion in generating the disassembly model and the lack of the uncertainty factors in determining the optimal...
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ISBN:
(纸本)9781424436705
Aiming at the two key problems during the process of the disassembly analysis, which are the combination explosion in generating the disassembly model and the lack of the uncertainty factors in determining the optimal disassembly sequence, this paper proposes a level modular method and puts forward the Petri net model correspondently, which reduce the complication of the disassembly model effectively. Meanwhile, the influences of uncertainty factors on evaluation algorithm of disassembly indexes, under different work conditions, are discussed and formulated. These parameters are saved in a fuzzy unit with the carrier of workers information, which form a special "place". Thus, a common Petri net is extended as a fuzzy Petri net disassembly model. Combining the corresponding evaluation algorithm, an optimal disassembly sequence according with the actual working situation can be achieved. Finally, a case is proposed to illustrate the above method.
Aiming at the two key problems during the process of the disassembly analysis,which are the combination explosion in generating the disassembly model and the lack of the uncertainty factors in determining the optim...
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ISBN:
(纸本)9781424436712
Aiming at the two key problems during the process of the disassembly analysis,which are the combination explosion in generating the disassembly model and the lack of the uncertainty factors in determining the optimal disassembly sequence,this paper proposes a level modular method and puts forward the Petri net model correspondently,which reduce the complication of the disassembly model effectively. Meanwhile,the influences of uncertainty factors on evaluationalgorithm of disassembly indexes,under different work conditions,are discussed and formulated. These parameters are saved in a fuzzy unit with the carrier of workers information,which form a special "place". Thus,a common Petri net is extended as a fuzzy Petri net disassembly model. Combining the corresponding evaluation algorithm,an optimal disassembly sequence according with the actual working situation can be achieved. Finally,a case is proposed to illustrate the above method.
Aiming at that the risk of perfect competition electricity market is limited information, the self-serving nature and the uncertain future, this paper presents a trust model BBTM (Behaviors Based Trust Model) that can...
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ISBN:
(纸本)9787564112493
Aiming at that the risk of perfect competition electricity market is limited information, the self-serving nature and the uncertain future, this paper presents a trust model BBTM (Behaviors Based Trust Model) that can evaluate trust relationship between participators by measuring participators' behavior and computing trust levels of participators. In this model, the hierarchical structure of the main factors that affect the trust value of participators is established by Delphi method, and Layer Analysis Process is applied to determine the weights of various factors. The trading quantity of electricity is converted to standard transaction numbers and standard transaction satisfactory numbers, which can prevent participators from cheating in large-scale transaction by accumulating trust value in small-scale successful transactions. The model can enhance the mutual understanding among market participators and promote them to provide the credible service to improve their credibility, which could ensure that the electricity market operates stably and effectively.
Aiming at that the risk of perfect competition electricity market is limited information, the self-serving nature and the uncertain future, this paper presents a trust model BBTM (Behaviors Based Trust Model) that can...
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Aiming at that the risk of perfect competition electricity market is limited information, the self-serving nature and the uncertain future, this paper presents a trust model BBTM (Behaviors Based Trust Model) that can evaluate trust relationship between participators by measuring participators' behavior and computing trust levels of participators. In this model, the hierarchical structure of the main factors that affect the trust value of participators is established by Delphi method, and Layer Analysis Process is applied to determine the weights of various factors. The trading quantity of electricity is converted to standard transaction numbers and standard transaction satisfactory numbers, which can prevent participators from cheating in large-scale transaction by accumulating trust value in small-scale successful transactions. The model can enhance the mutual understanding among market participators and promote them to provide the credible service to improve their credibility, which could ensure that the electricity market operates stably and effectively.
Despite the wide theoretical and technical knowledge about the capabilities of Global System for Mobile communications (GSM) elements, there is no specific methodology for designing front scratch either the Network Su...
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ISBN:
(纸本)0780366840
Despite the wide theoretical and technical knowledge about the capabilities of Global System for Mobile communications (GSM) elements, there is no specific methodology for designing front scratch either the Network Sub-System (NSS) nor the Base Station Subsystem (BSS) parts or optimizing and expanding the exiting NSS/BSS architecture, by forecasting future requirements in terms of network elements/resources. Thus, for an evolving network operator who wishes to have a network running at lower cost, offering a competitive Quality of Service (QoS) to its subscribers, Planning, Optimization Forecasting Tool (POFTool) is of pivotal importance. This paper aims at identifying the main features of a proper POFTool that efficiently supports dimensioning and optimization studies for combined GSM / General Packet Radio System (GPRS) networks and to propose an evaluation methodology which enables the prioritization of alternative core network configurations according to operator-driven criteria.
Flow dialysis can be used to measure (i) ligand binding to macromolecules and (ii) the size of transmembrane ion gradients. Generally an approximate method is used to calculate the binding or gradient parameters from ...
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Flow dialysis can be used to measure (i) ligand binding to macromolecules and (ii) the size of transmembrane ion gradients. Generally an approximate method is used to calculate the binding or gradient parameters from the raw data. Here we present a simple but exact method and evaluate the errors that may arise when the approximate method is used to calculate the magnitude of ion gradients. In addition, equations are presented that allow for a correction for sampling from or additions to the upper compartment of a flow-dialysis vessel during the measurements. Setty and Hendler [(1982) J. Biochem. Biophys. Methods 7, 35-46] have reported artifacts in the measurement of ion-gradients caused by the addition of electron donors to the upper compartment of a flow-dialysis cell. Here we extend their observations and suggest additional methods to prevent such artifacts.
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