The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, through combining information diffusion principle and BP neural network theory, a new prediction model of drought disaster assessment is established. First, the original data are fuzzily processed based on information diffusion method, then a new training sample is formed; second, the new sample is used to design and train BP neural network; finally, the trained fuzzy neural network...
Combined with the actual situation of China's construction enterprises, based on the growth-medium-sized enterprises evaluation method published by “Research for Small Medium-sized Enterprises Development” joint research projects group, and by using fuzzy clustering analysis to analyze the eight evaluation index systematically which determine the enterprises growth, the sorting of evaluation index...
This paper innovatively proposes a hybrid intelligent system combining fuzzy comprehensive assessment approach and artificial neural network (ANN) that predicts the safety performance of construction site for breaking through the limitations of conventional method. And also inducts the sensibility analysis to discriminate the importance of each index in the assessment index system. The effectiveness...
In China, private placement fund has a major impact on the operation of stock market. Due to the characteristics of private placement fund and the lack of legislation, there are a number of risk factors in the operating of private placement fund. This article introduces the operating state of private placement fund in China, and analyzes the characteristics of the risk. In the last part, on the basis...
By constructing the exponential delay cost function, we formulate the consumer decision model based on the threshold strategies in dual-mechanism, and prove that there exists a unique symmetric Nash equilibrium in which the high-valuation consumers use a threshold policy to choose between the two selling channels. Then we extend our model under general delay cost function, and find that consumers...
The purpose of this study was to identify switching costs and examine the moderating effect of switching costs on buyer loyalty model in the B2B e-marketplace. Then a questionnaire was constructed and data were collected from 649 buyers of a Chinese B2B e-marketplace in 114 countries all over the world. Multi-group analysis was applied to examine the moderating effect of switching costs. Finally,...
This paper focuses on the establishment of storage management models for permissible shortage and comparison between stock management systems with and without shortage. Through the comparison a relevant optimization strategy is brought up. Furthermore, this paper reveals that the supply chain system could run more efficiently with an establishment of a permissible shortage model in VMI pattern under...
The problem of the layout of NEMLCs (National Economic Mobilization Logistics Centers) is one of the most important long-term decision-making issues. The result of NEMLCs's layout directly impacts many aspects of mobilization, such as time, reliability, quality, efficiency, cost, and so on, consequently affects the effect of the mobilization. Under the restriction of mobilization time, the paper establishes...
According to the randomness and weak economy properties of the Emergency Rescue Routing Problem (ERRP), a chance-constrained programming model is constructed based on a stochastic road network. In this model, we consider there are multiple emergency rescue departments serving for a single emergency site, and the travel times between any two nodes are stochastic variables. As the stochastic ERRP is...
This paper divided China into three sub-regions to study the corn production. After built yield and acreage model of corn with Nerlove Model, this paper analyzed the factors which affected corn's yield and planting areas in different sub-regions. At the last section, calculated the elasticities of yield and planting area in sub-regions for the short run and the long run. The result indicates that...
This paper, which based on the assumption of product market demand price-dependent and random deviation, makes models respectively to discuss the optimal strategy in the cooperation and non-cooperation conditions between the supplier and the retailer, which is how to determine the most superior wholesale price of the suppliers optimal order quantity of the retailers and retail price. Suppliers, which...
Based on DEA model, this paper discusses the influence of state of economy in different industries on the senior managers' operating performance and excludes the influence of various uncontrollable factors on senior managers' operating performance by mathematical methods, which makes the new evaluation method more fair and reasonable. This new method is proved to be effective and practical by evaluation...
For coal transportation in the shunting and winch system PID tuning is proposed adaptive genetic algorithm for parameter optimization of PID control, the adaptive line genetic algorithm combined with PID control technology, simulation achieved by shunting and winch system in the coal application, simulation results show that the online adaptive genetic algorithm for online optimization of PID parameters...
This paper explains the mechanism that intellectual property protection affects import trade, and investigates the impact of intellectual property right protection on import trade by using inter-provincial panel data in China. The empirical results show that the relationship between patent protection system and high-tech products imports is significant and positive, stronger patent protection system...
A performance degradation prediction method for multi-unit system with insufficient measurement data is proposed by integrating data recovering model, hidden Markov model and support vector regression (SVR) model. The development of the model includes three main parts. Part one, a principal component analysis (PCA) model is build based on normal state. Part two, a hidden Markov model(HMM) is trained...
This paper analyzes the reason that the standard buy-back contracts can not coordinate supply chain when suppliers allow retailers to lower prices, and an encouraging buy-back contract is proposed to coordinate the supply chain. The contract allows supplier to coordinate supply chain again only by adjusting the buy-back price. Finally, a numerical analysis is given to verify these results.
Analysis of the composition of medical care service encounter quality, in order to find out specific measures. Effective scale is designed by using the interview questionnaires. Questionnaires were designed for investigation in outpatient clients of public hospital within Anhui. Finally the results are testified by reliability testing, validity testing and regression analysis from using the SPSS16...
According to the Cobb-Douglas production function and solow residual value method, econometric model of building industry's performance is established and its influencing factors' quantitative analysis is conducted, which use the macroeconomic data from 1997 to 2008. The results show that building industry's production belongs to incremental reward type; performance's improvement depends on the adequate...
In the world of new economy, great changes are taking place in the living environment of enterprises. Consequently, traditional enterprise financial management is greatly challenged in terms of its objectives, models, concepts and contents. The present paper, after a careful analysis of different kinds of drawbacks of traditional enterprise financial management, puts forward innovative ideas to adapt...
In order to forecast the scale of logistics demand for a new-built airport, economic indicators are used to forecast the scale of logistics demand and the measuring indicator of the scale of logistics demand is studied. The factor analysis and back propagation (BP) artificial neural network theory are applied to set up a model to forecast the scale of the logistics. The application of factor analysis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.