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A new two-dimensional analytical model for the potential distribution and depletion-layer width for the short-gate GaAs MESFET's has been presented in this paper. The solution of the two-dimensional Poisson's equation has been considered as the superposition of the solution of one-dimensional Poisson's equation in the lateral direction and the two-dimensional Laplace equation with suitable boundary...
The objective of the present study is to examine whether a simple affine-linear model of autonomous nervous activities would be able to reproduce the characteristic features of MAP regulation observed over long periods of time. In this study, we approach the problem first by constructing a modified nonlinear model for the human ABP regulation system. By simulating with various gain combination values,...
The objective of this paper is to demonstrate in which case asymmetric coupled structures can be analyzed as symmetric line models in order to use the quasi-symmetric approach. For this aim, a rigorous formulation was used; trial functions of even and odd modes were obtained from the symmetric case, and thus proposed for the asymmetric case. A comparative study of dispersion parameters shows the limits...
The reusability of the Product Quality Tracking System is currently very poor. And the software resources' sharing is not adequate. Because of these shortages, this paper researches on the component-based software development, and uses the idea of domain engineering to get the domain modeling of Product Quality Tracking and the DSSA (domain-specific software architecture). This paper first analyzes...
Based on the analysis of the existing utility-based forwarding mechanisms, for the inefficient forwarding of history encounter time based forwarding mechanism in the initial phase of the node movement, a Random and Encounter Time Based algorithm named RET is proposed in this paper. RET divides the nodes moving into two phases-random forwarding phase (initial phase) and utility-based forwarding phase...
Requirement analysis is the preliminary step in software development process. The requirements stated by the clients are analyzed and an abstraction of it is created which is termed as requirements model. Unified Modeling Language (UML) models are helpful for understanding the problems, communicating with application experts and preparing documentation. The static design view of the system can be...
Due to the excellent control of DG MOSFETs over the short channel effects, they have been considered as a leading candidate to extend the scaling limit of conventional bulk MOSFETs. However, the hot carrier injection into gate oxides remains a potential problem in reliability field hence altering the device lifetime. In the present paper, a comprehensive drain current model incorporating hot-carrier-induced...
In the fierce market competition, price strategy is a kind of market-based instruments that many companies often used. This paper used factor analysis, established a evaluation method for the market effect of such a strategy, described its principle of the algorithm and the implementation of EXCEL with actual case.
This work presents a Hybrid Model Library (HML) for enhancing the analysis of ship electrical systems. Lots of studies were made in order to select the most appropriated software platform to test the new models developed. This work shows examples of models developed in Simulink-MATLAB and PSIM platforms. Later on, we present a research methodology based on modeling techniques by hybridization. Several...
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.
Networks are very important in many fields of machine learning research. Within networks research, inferring the structure of unknown networks is often a key problem; e.g. of genetic regulatory networks. However, there are very few well-known biological networks, and good simulation is essential for validating and evaluating novel structural inference techniques. Further, the importance of large,...
In this paper, based on the mean-field theory, we propose a new susceptible-infected-removed (SIR) model to study epidemic spreading on scale-free networks with traffic flow. Theoretical analysis shows that as the network traffic flow increases, the epidemic prevalence is obviously enhanced, and the epidemic threshold is reduced. We also find that the epidemic threshold is related to the ratio between...
Orthogonal frequency division multiplexing (OFDM) signals have a generic problem of high peak to average power ratio (PΛPR) which is defined as the ratio of the peak power to the average power of the OFDM signal. The drawback of the high PAPR is that the dynamic range of the power amplifiers (PA) & digital-to-analog (D/A) converters required during the transmission and reception of the signal...
The Hind marsh-Rose (HR) Neuron not only contained the features of cell biological physical model, but also included the traits of non-linear dynamical system model. The paper analyzed the HR model by computing manifold. It computed the equilibria, simulated the bifurcation phenomenon of the parameters, estimated the unstable local manifold and computed the global manifold using the angle constraint...
Hazard and Operability (HAZOP) analysis is a systematic procedure for determining the abnormal causes of process deviations from normal behavior and their adverse consequences in a chemical plant. A computer-aided HAZOP analysis software platform based on Signed Directed Graph (SDG) called SDG-HAZOP has been developed recently. While HAZOP analysis is generally applied only to continuous process plants,...
In order to better understand system, modeling is necessary. In software development process, the UML is usually used as a standard method to model related products. This paper introduces the UML and its modeling process, and then uses object-oriented technology to model the information platform for basic education.
This paper describes a graphical method for the optimization of Quadrature Voltage Controlled Oscillators (QVCOs) based on the coupling of two LC-tank VCO. A three-dimensional phase noise analysis diagram and graphical optimization approach is presented, to optimize QVCO phase noise while satisfying design constraints such as power dissipation, tank amplitude, tuning range and start up condition....
This article describes logical analysis infrastructure of associative tables (matrices), which enables to perform processing the interaction of the input vector with n-dimensional algebra-logical space, specified by using the ordered and structured tables of problem-oriented data, which represent the associative behavioral models of logical objects. To estimate the interaction of vectors in algebra-logical...
In this paper a stiffening technique for cage rotors of induction machines is proposed and analyzed, aimed at reducing the mechanical oscillations excited by the traction torque harmonics. The solution is simple, consisting of stiffening blocks inserted between couples of adjacent copper bars, overhanging from the rotor stack. The insertion of the stiffening blocks yields an increase of the lowest...
On the basis of interrelated researches, this essay summarizes the basic definition and classification, and provides a model which consists of six views to modeling composite connector. The center of this model is function view, with the aspect view, framework view, logic/data view, behavior view and integrated view running through, and then the above six views form a systematic whole describing and...
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