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 order to analyze the property of the blended coal in the power plants boiler operation, the author structure a new kind of hybrid model for blended coal based on Genetic Algorithm (GA) and support vector machine (SVM).The results of testing 20 blended coals in power plant show that the proposed model is practical and feasible. The model can achieve higher classification accuracy.
Absorbing exchange rate as exogenous disturbance, a mixed GARCH-jump model is proposed to compare return series fluctuation of Shanghai composite index with that of Dow Johns Index. It also incorporates properties of asymmetry, clustering, leptokurtosis and fat-tail of index series fluctuation into an integrated analytic frame of so-called diffusion-jump. Fitness test of GARCH-jump model proves that...
Intra-body Communication (IBC) is an emerging and interesting communication technique in recent years. Utilizing the conductive property of human body, IBC employs human body as communication medium for transmitting electrical signals. As a result, electromagnetic interference can be greatly reduced for devices communicated within human body. These advantages are significant for home health care system,...
Cluster supply chain is a complicated network structure, the enterprises in it not only have to coordinate with enterprises in the same single chain, but also have to compete and cooperate across chain. In this paper we study mainly on how core manufacturers in different single chains cooperate and compete with each other, in order to realize the minimal cost under the premise of cluster supply chainpsilas...
Quantitative analyses the development level for social security system. It is theoretical important for studying the sustainable development for social security systems. Based on the modern theory of social security systems combined with related mathematical methods, the paper firstly analyses the relations among the sub-indexes of development level for social security systems. Secondly, it sets up...
By modeling and simulating, analyzed vibration characteristics of a kind of 3-degree-of-freedom of vibro impact system with periodic excitation which include clearance, the interface where the gap closed was chosen as a Poincare section, using Runge-Kutta method proved that this model has a chaotic situation.The research of the system's bifurcation and chaos provided a kind of reference for engineering...
In this paper, we introduce the concepts of holiday tourism information data mining and grey prediction technology, establish the holiday tourism data model and grey prediction model, and analyze the predict results. On the basis of the analysis with agent system-infrastructure, we establish an agent based tourism grey prediction system.
Structural equation model is widely used in economic field, but it has not been adequate in project management, especially construction industry. This paper investigates the operation of the entire supplier activities, reveals the core factors of the integration between project management and supplier management, and also analyses the extent to which these factors rely on the supplierpsilas responsibility...
The purpose of this study was to explore the volatility of housing price in Shanghai. Past housing price growth, interest rate, and exchange rate growth were found out as the main factors to influence housing price growth. GARCH model and its expanded model, EGARCH and TGARCH, were employed. The main econometric results showed that: firstly, these explanatory variables could explain 70% variation...
As a new wireless network access technology, WiMAX can provide broadband Internet connection to user. However, the standards do not mention how to allocate bandwidth to different applications and how to improve the performance of the whole network. In this paper, a Time Division Duplexing based bandwidth requesting and allocating model had been proposed to analyze the work process of bandwidth requesting...
The parameterized emission model of dry snow developed by Jiang et al. could be used to simulate the microwave emission signal for one layer snow. On the basis of sensitivity analysis, this simple snow parameterized model is firstly compared with the HUT model using the PSR observation with the corresponding snow pits data over North Park area in Feb., 2003. At lower frequencies, both of the two models...
This paper aims to develop a decision-making tool that can be used by government agencies in managing emergency rescue supplies and distribution to forge an effective emergency rescue network. Due to geographical differences, there are two kinds of emergency rescue system: with a replenishment source (WS) and without replenishment source (WOS). In this paper, a collaborative replenishment model for...
In this paper, based on the analysis of tourism holiday information, we put forward and build up the flow prediction model of holiday tourism and establish the theoretical architecture of the model. Then we generalize nonlinearly the flow prediction model of holiday tourism, and predict respectively to the linear and nonlinear flow model through the maximum likelihood method and RBF neural network...
Traffic models play an important role in network design and performance evaluation. Since the usual assumption of independencies between different traffic streams, these models are not able to precisely reflect the characteristic of real network traffics. In this paper, we present a joint distribution traffic model which can express the dependency of two traffics. This model is constructed with parameters...
The BA model and BA extend model described the number of nodes linked, but the researchers believe the nodes have the highest number of links if the timeframe is enough long. However, the real system not only depend on timeframe, hence, we proposed a new network evolving model which has attractive factor, the number of links of nodes have relate with attractive factor. If new nodes have enough attractive...
In this paper, DC-DC converters are viewed as one class of hybrid systems i.e. switched linear systems. A new mathematical model of switched linear systems-matrix coefficient polynomial description model is presented. An obvious description form of the relationship between the continuous variable and discrete variable is built, a new model of switched linear system of DC-DC converters, in which continuous...
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.