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 optimize the capacity of farmers' income persistently increasing, in this paper we analyze 8 factors affecting farmers' income increasing using PLS model based on the statistical data of Heilongjiang reclamation from 2000 to 2008. The study shows that wage incomes, agricultural subsidy and tax reducing still account for a great proportion of farmers' net incomes, but the level of agricultural...
The one-dimensional consolidation of soft soil induced by water head difference between the top and the bottom of the soil layer was studied. One-dimensional consolidation equation expressed by water head under arbitrary datum plane was derived, and the general solution was obtained for arbitrary decline model of water table. Furthermore, for two simple models which are linear decline model and instant...
On the basis of hypothesis of limited time and multistage order, the order strategy was brought forward for the changing charge, and the multistage stock model with deteriorating lose were constituted for the Single Short Life Products (SSLPs) and Multiple Short Life Products (MSLPs) under different order strategies. In addition, that the combined order mode was better than the other order modes for...
Stainless steel is characterized by nonlinear stress-strain behavior, material anisotropy and different mechanical properties in tension and compression. As a result, it is necessary to define stress-strain relations of stainless steel precisely for the researches of mechanical behavior and stability of stainless steel member. This paper reviews the researches in constitutive relations models home...
From the viewpoint of flexible strategy and network innovative height, industrial clusters possessed significant regional characteristics and strategic competition become the research objects in the paper. Three networks such as dynamic distribution networks, agile trading network and open social relation network and so on successfully operate in regional economy environment of liaoning province....
Empirical Study on the relation between direct financing in the capital market and economical development in China was carried out with co-integration test and error correction model based on the annual data from 1981 to 2009. The results indicated that there is long/short run and stationary positive relation between direct financing and gross domestic product (GDP). It's found that direct financing...
In this paper, we presented a new analytical model for the transconductance and output conductance of submicron gate-length GaAs MESFET transistors. After an analytical study of the current voltage characteristics, the transconductance and drain conductance mathematical expressions are determined as a function of the drain and gate voltages in different operations regimes (linear, non-linear and saturated)...
Inverted Pendulum is a nonlinear, coupling, variable and naturally unsteady system. In order to control the system, the mathematic model through lag range equation was set up and the LQR Controller was designed in this paper. Last, the author analyzes the control results and obtains superior parameters through simulation. The experimental results show that LQR control is more effective and robust.
This paper provides a stochastic approach to the analysis of real-time systems under preemptive priority-driven scheduling. The main idea is to simplify the execution time distributions via random sampling to decrease complexity. This beneficial effect is counterbalanced by an increase in pessimism. However, the proposed analysis is significantly less pessimistic than the classical worst-case deterministic...
Limited preemption scheduling has been introduced as a viable alternative to non-preemptive and fully preemptive scheduling when reduced blocking times need to coexist with an acceptable context switch overhead. To achieve this goal, preemptions are allowed only at selected points of the code of each task, decreasing the preemption overhead and simplifying the estimation of worst-case execution parameters...
Solid tumor survives by the generation of micro-vessels around it. This phenomenon is known as angiogenesis. Angiogenesis is governed by two factors, namely Tumor Angiogenic Factor (TAF) secreted by the tumor cells and tissue Fibronectin (FNT) concentration in the extra-cellular space. These two factors help in mobilization of endothelial cells from nearby blood vessels. At the initial phase of angiogenesis,...
This paper presents the stability analysis of parameter identification. The Takagi Sugeno fuzzy model is employed to represent the discrete time nonlinear dynamical systems. Once the structure of the fuzzy model is fixed, the parameters can be optimized. The parameter identification is accomplished by applying the gradient method where the iteration rates are specific to each parameter. The stability...
Inverse analysis of rock displacement is a kind of new way of studying the parameter of physical power of rock, a lot of researchers have carried on research in this respect, and some researchers among them ask solving this question with the genetic algorithm. This paper apply master-slaver model parallel genetic algorithm (MSM-PGA ) to solve inverse analysis of rock displacement, in the course of...
This article describes a sensory mapping algorithm based on the simultaneous application of data mining on two sets of data, corresponding to two processes governing customers' preferences: The sensory process, which governs the acceptance of a product as a function of hedonic variables, and the analytical process, which relate the sensory responses to objective analytical properties of the product;...
In this paper, we compare the costs and efficiency arising from the delta-neutral dynamic hedging of options, using two possible values for the delta of the option. The first one is the traditional Black-Scholes delta, while the second one is the GARCH option pricing delta, namely the delta of the option in the generalized Black-Scholes model with a volatility calibrated from GARCH model. Both our...
Multi-core processor architectures are gaining huge interests from academia and industry. The multi-core architectures have been proposed and designed for overcoming diminishing return and for efficiently utilizing the exponentially increasing number of transistors available in nano-meter semiconductor technology. Though the multi-core architecture has been proposed as a promising alternative to a...
We here present a method that combines frequency-domain Fourier series expansion and space-domain polynomial expansion of the physical quantities inside the semiconductor, for an efficient numerical modelling of high-frequency active devices, based on the solution of the physical transport equations in the semiconductor. The frequency- and space-domain expansions drastically reduce the number of time...
The synchronous generator model has important influence on analyzing of power system stability. The article introduces that how to build the fifth-order mathematical model of the synchronous generator by Park equation in the stand-alone infinite system firstly. Then the simulation model is built by using the modified Eulerpsilas method. Finally, it can prove that this fifth-order mathematical model...
The sliding transformer is the central part of the contactless inductive power transfer system that can realize the safe supply for mobile devices. The mathematical model of the sliding transformer is set up according to the coupling-circuit method. The compensation topologies and resonant frequency of the transfer system are analyzed contrastively, and the simulation experiment results are given...
Compared with the traditional converter transformer, the auto-compensation and harmonic shielding converter transformer, namely, the new converter transformer, has a unique connection. In general, the difficult branches that only contain solitary voltage source sometimes appears in the mathematical modeling for the transformer, but the traditional nodal equations of the transformer are unable to be...
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.