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According to the deficiency of Chord algorithm supporting single keyword query only, a P2P framework-Z_OrderChord(ZC) by combining the Z_Order and Chord is proposed for managing service resources, which supports DHT-based multi-keyword query and approximate query by means of Z_Order index to improve resources searching ability.
Agricultural modernization is crucial for the economic development of agriculture. Technique for order preference by similarity to an ideal solution (Topsis) and artificial neural network (ANN) were employed to evaluate and predict agricultural modernization level. A three-layer ANN models were developed to predict agricultural modernization level. The models were compared using the mean absolute...
First of all, by using the Customer Perceived Service Quality and SERVPERF, the mobile network service evaluation model in the 3G era is established, the weights of the index is weighed and the effect is tested. Then the model is used to evaluate the current situation of the mobile network service of A company, and to find out the problems in data business, complaints and so on; also, the practical...
Based on deep study on economy-environment system relation, the article builds regional economy-environment coordinating development evaluation index system which includes sub-system of economy and environment, three factors of summation, structure and quality and 27 indexes and adopts economy-environment coordinating degree evaluation model to evaluate comprehensively economy-environment coordinating...
Since the limit state function of the mechanical structure is an implicit function of the uncertain variables, it is difficult to analyze structure reliability by means of using conventional methods. A method obtained the non-probability reliability index the basis of support vector machines is proposed for solving more complexity or implicitly of the limit state function. The uncertain variables...
This article measures the total factor productivity changes of Beijing automobile industry over the period of 2003-2008 based on Malmquist index through analyzing four prime automobile enterprises. The results generally show a “W”-shaped fluctuation and the average is lower than the national average. It is codetermined by technological change and technical efficiency, and in different periods the...
Electro-hydraulic driving 6-dof parallel robot suffers from non-linearity, strong load coupling disturbance and parameters variations when it moves. In order to solve the problem of precise trajectory tracking for 6-dof parallel robot, a decentralized control strategy was used and a 2-dof QFT robust controller was designed in the joint space of robot. Experiment results show that the 2-dof QFT robust...
For high-dimensional and diversity nature of the index data of listed firms, and in order to overcome the shortcomings of previous evaluation methods, we propose a comprehensive evaluation method based on entropy weight coefficient method. we study on the listed firms of appliance industry, and determine the objective weight of sample indexes of the listed appliance firms by entropy weight coefficient...
On the base of establishing rational talents structure evaluation index system the article defines indicator direction, index weight and has nondimension handling to establish comprehensive evaluation mathematics model. By defining two grades index and four structure index it has empirical study on talents structure evaluation of Hebei Province. The result shows that rational talents structure of...
Single method for damage identification is not sensitive to some damages. A new damage identification method is proposed in this paper based on Frequency Response Function and wavelet packet, Take frequency response functions (FRF) which before and after structure damage as signals and carry out wavelet packets analysis. By simulation of damage detection to the continuous beam, it proves feasibility...
In order to solve the problem that the traditional Modulation and Coding Scheme (MCS) selecting rule improves the performance limitedly, this paper introduces a novel MCS selection criterion for the LTE system supporting an adaptive-modulation and coding (AMC) scheme. The proposed criterion uses the sum of the weighted SNRs to determine the appropriate MCS for the AMC system. The simulation shows...
In forensic science, the wear information of the criminal tool can provide the relevant cues. So far, the researches about how to analyze the wear of criminal tool are still in the initial stage. There is a strong relationship between the degree of wear for the cutting tool such as pliers and the geometry imparted by the tool on to the wire surface. It is more practical and helpful to analyze the...
According to the characters of the logistics center location project evaluation, considering that the incomplete and uncertain intraval attribute information of the logistics center location evaluation can be reflected effectively by the traditional extension decision-making model, Extension decision-making model with grey interval number is proposed based on the grey system theory. At the course...
Ninety percents energy and more than eighty percents industrial raw materials came from mineral resources at present. In fact, the exploitation of mineral resource consumes two resources: mineral resources and environmental resources. Opencast mining of resources particularly leads to great damage on ecological environment. This paper selected Xiangning County of Shanxi Province as the study area...
In this paper, university network security evaluation system based on fuzzy AHP evaluation model, with examples given using the evaluation model for network security assessment procedures and methods. Evaluation results show that the proposed approach is feasible and guidance.
With the implementation of related reform measures, the efficiency of Chinese securities market having been improved since it reflects information and psychological expectation factors better and better, which will result in some changes to correlated structure between securities markets of China to the other major economies. America exploded sub-prime mortgage crisis in 2007 which made world economy...
Nowadays, the interrelationship study issues between energy consumption and economic development draw researchers' attention to study deeply in the world. We must find out what correlation exists between them. The problem which makes decision analysis solve the energy and the economy in according to researchers has become an important content of the coordinated development. Beijing, as the capital...
Sickbed arrangement is an important part of daily management in the hospital. Since the service time for different type of patients varies, the queuing system here, with multi-random input flow, can not be solved accurately by using classical queuing theory. Based on the analysis of patient information, we apply the simulation method into the sickbed arrangement system, and take the average waiting...
The ascertainment of the index weight is the core process in establishing the evaluation index system. The equipment maintenance support effectiveness evaluation indexes are described. The essay maintains to make use of an improved community judgment AHP method to ascertain the weight of each layer index and quantized them. The paper adopts a threshold method on the standardize procession. It solved...
In this paper, through by using the AHP (Analytic Hierarchy Process) method's basic theory analysis in web-teaching platform, analyzing ability of students' self-learning, and establishing the evaluation index system, according to expert criteria derived the value of influence factors. With it calculated every level index's weight by using the square root method, and implements the weight by given...
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