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Search Results: 1 - 10 of 209416 matches for " L Haiyan "
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Spectra of 2 × 2 Upper-Triangular Operator Matrices  [PDF]
Haiyan Zhang
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.411A1004

In [Perturbation of Spectrums of 2 × 2 Operator Matrices, Proceedings of the American Mathematical Society, Vol. 121, 1994], the authors asked whether there was an operator \"\" such that \"\" for a given pair (A,B) of operators, where the operator \"\" was defined by \"\". In this note, a partial answer for the question is given.

Reader-Friendly Navigator for Global Tax Treaty Cases—Book Review of “A Global Analysis of Tax Treaty Disputes”  [PDF]
Haiyan Xu
Beijing Law Review (BLR) , 2018, DOI: 10.4236/blr.2018.92009
Abstract: This paper is a book review for the informative and thoughtful book “A Global Analysis of Tax Treaty Disputes”, edited by Prof. Eduardo Baistrocchi. As one of the first readers of this book, I firmly believe that it is a most fascinating pioneering work on global and comparative analysis of tax treaty disputes from empirical approach.
Network Consumers’ Reference Price Formation Analysis  [PDF]
Haiyan Lin
Open Journal of Business and Management (OJBM) , 2018, DOI: 10.4236/ojbm.2018.63053
In this paper, based on the previous literature on reference prices, the definition, forms of expression and related theories and analysis of reference prices are summarized. Based on this analysis, it is concluded that the reference price formation of online consumers is related to their information search behavior. Finally, E-commerce companies make suggestions for online promotions.
Multiple positive solutions to third-order three-point singular semipositone boundary value problem
Huimin Yu,L Haiyan,Yansheng Liu
Mathematics , 2005,
Abstract: By using a specially constructed cone and the fixed point index theory, this paper investigates the existence of multiple positive solutions for the third-order three-point singular semipositone BVP: $\begin{cases} x'''(t)-\ld f(t,x) =0, &t\in(0,1); [.3pc] x(0)=x'(\eta)=x''(1)=0, & \end{cases}$ where ${1/2}<\eta<1$, the non-linear term $f(t,x):(0,1)\times(0,+\i)\to (-\i,+\i)$ is continuous and may be singular at $t=0$, $t=1$, and $x=0$, also may be negative for some values of $t$ and $x$, $\ld$ is a positive parameter.
Network Delay Model for Overlay Network Application  [PDF]
Tian JIN, Haiyan JIN
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2009, DOI: 10.4236/ijcns.2009.25045
Abstract: This paper presents a method to model network delay for overlay network application. The network topology measurement technology and network AS information is used to build up model of network delay via AS and geographic distance. Based on global Internet measurement result, we calculated the parameters of the model. Furthermore, the model verification is done by comparing on AS-MMI protocol and HMTP protocol.
A New Multi-Method Combination Forecasting Model for ESDD Predicting  [PDF]
Haiyan SHUAI, Qingwu GONG
Energy and Power Engineering (EPE) , 2009, DOI: 10.4236/epe.2009.12015
Abstract: Equal Salt Deposit Density (ESDD) is a main factor to classify contamination severity and draw pollution distribution map. The precise ESDD forecasting plays an important role in the safety, economy and reliability of power system. To cope with the problems existing in the ESDD predicting by multivariate linear regression (MLR), back propagation (BP) neural network and least squares support vector machines (LSSVM), a nonlinear combination forecasting model based on wavelet neural network (WNN) for ESDD is proposed. The model is a WNN with three layers, whose input layer has three neurons and output layer has one neuron, namely, regarding the ESDD forecasting results of MLR, BP and LSSVM as the inputs of the model and the observed value as the output. In the interest of better reflection of the influence of each single forecasting model on ESDD and increase of the accuracy of ESDD prediction, Morlet wavelet is used to con-struct WNN, error backpropagation algorithm is adopted to train the network and genetic algorithm is used to determine the initials of the parameters. Simulation results show that the accuracy of the proposed combina-tion ESDD forecasting model is higher than that of any single model and that of traditional linear combina-tion forecasting (LCF) model. The model provides a new feasible way to increase the accuracy of pollution distribution map of power network.
Grey GRM(1, 1) Model Based on Reciprocal Accumulated Generating and Its Application  [PDF]
Ruibiao Zou, Haiyan Wu
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.36084
Abstract: Aiming the problem of low accuracy during establishing grey model in which monotonically decreasing sequence data and traditional modeling methods are used, this paper applied the reciprocal accumulated generating and the approach optimizing grey derivative which is based on three points to deduce the calculation formulas for model parameters, established grey GRM(1, 1) model based on reciprocal accumulated generating. It provides a new method for the grey modeling. The example validates the practicability and reliability of the proposed model.
Adaptive Output Tracking for Nonlinear Network Control Systems with Time-Delay  [PDF]
Jimin Yu, Haiyan Zeng
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2012, DOI: 10.4236/ijmnta.2012.13010
Abstract: The problem of adaptive output tracking is researched for a class of nonlinear network control systems with parameter uncertainties and time-delay. In this paper, a new program is proposed to design a state-feedback controller for this system. For time-delay and parameter uncertainties problems in network control systems, applying the backstepping recursive method, and using Young inequality to process the time-delay term of the systems, a robust adaptive output tracking controller is designed to achieve robust control over a class of nonlinear time-delay network control systems. According to Lyapunov stability theory, Barbalat lemma and Gronwall inequality, it is proved that the designed state feedback controller not only guarantees the state of systems is uniformly bounded, but also ensures the tracking error of the systems converges to a small neighborhood of the origin. Finally, a simulation example for nonlinear network control systems with parameter uncertainties and time-delay is given to illustrate the robust effectiveness of the designed state-feedback controller.
Calculation of compact amplitude-integrated EEG tracing and upper and lower margins using raw EEG data  [PDF]
Dandan Zhang, Haiyan Ding
Health (Health) , 2013, DOI: 10.4236/health.2013.55116

Amplitude-integrated EEG (aEEG) is a popular method for monitoring cerebral function. Although various commercial aEEG recorders have been produced, a detailed aEEG algorithm currently is not available. The upper and lower margins in the aEEG tracing are the discriminating features for data inspection and tracing classification. However, most aEEG devices require that these margins be measured semi-subjectively. This paper proposes a step-by-step signal-processing method to calculate a compact aEEG tracing and the upper/lower margin using raw EEG data. The high accuracy of the algorithm was verified by comparison with a recognized commercial aEEG device based on a representative testing dataset composed of 72 aEEG data. The introduced digital algorithm achieved compact aEEG tracing with a small data size. Moreover, the algorithm precisely represented the upper and lower margins in the tracing for objective data interpretation. The described method should facilitate aEEG signal processing and further establish the clinical and experimental application of aEEG methods.

Fixed Points Associated to Power of Normal Completely Positive Maps*  [PDF]
Haiyan Zhang, Hongying Si
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.45101
Abstract: Let \"\" be a normal completely positive map with Kraus operators \"\" . An operator X is said to be a fixed point of \"\" , if \"\". Let \"\" be the fixed points set of \"\" . In this paper, fixed points of \"\" are considered for \"\" , where \"\"means j-power of \"\" . We obtain that \"\" and \"\" for integral when A is self-adjoint and commutable. Moreover, \"\" holds under certain condition.
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