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numerical

dmath

TPMath is a library of scientific programs written in Pascal. Available in several versions according to the compiler, it is proposed as an alternative to the famous numerical Recipes, for which the Pascal version is no longer developed, or to the Borland numerical Methods Toolbox which is no longer available.

標簽： delphi math

上傳時間： 2015-03-06

上傳用戶：y_flin
a sub-cell WENO reconstruction method

We introduce a sub-cell WENO reconstruction method to evaluate spatial derivatives in the high-order ADER scheme. The basic idea in our reconstruction is to use only r stencils to reconstruct the point-wise values of solutions and spatial derivatives for the 2r-1 th order ADER scheme in one dimension, while in two dimensions, the dimension-by-dimension sub-cell reconstruction approach for spatial derivatives is employed. Compared with the original ADER scheme of Toro and Titarev (2002) [2] that uses the direct derivatives of reconstructed polynomials for solutions to evaluate spatial derivatives, our method not only reduces greatly the computational costs of the ADER scheme on a given mesh, but also avoids possible numerical oscillations near discontinuities, as demonstrated by a number of one- and two-dimensional numerical tests. All these tests show that the 5th-order ADER scheme based on our sub-cell reconstruction method achieves the desired accuracy, and is essentially non-oscillatory and computationally cheaper for problems with discontinuities.

標簽： 高精度格式

上傳時間： 2016-01-13

上傳用戶：ccsdcczd
Trade and Heterogeneous Labor

We show in the context of a new economic geography model that when labor is heterogenous trade liberalization may lead to industrial agglomeration and inter-regional trade. Labor heterogeneity gives local monopoly power to firms but also introduces variations in the quality of the job match. Matches are likely to be better when there are more firms and workers in the local market, giving rise to an agglomeration force which can offset the forces against, trade costs and the erosion of monopoly power. We derive analytically a robust agglomeration equilibrium and illustrate its properties with numerical simulations

標簽： 經濟、城市化和經濟增長

上傳時間： 2016-04-02

上傳用戶：kinda233
numerical Recipes in C

最經典的數值方法教科書。出自康奈爾大學。

標簽： numerical Recipes in

上傳時間： 2016-08-07

上傳用戶：Alibabgu
通過提高保證成本的狀態延遲控制和量子自適應控制的一臺四輪直升機的控制策略

Improved guaranteed cost control and quantum adaptive control are developed in this study for a quadrotor helicopter with state delay and actuator faults. Improved guaranteed cost control is designed to eliminate disturbance effects and guarantee the robust stability of a quadrotor helicopter with state delay. The inapplicability of guaranteed cost control to the quadrotor linear model is addressed by combining guaranteed cost control with a model reference linear quadratic regulator. In the event of actuator faults, quadrotor tracking performance is maintained through quantum adaptive control. Finally, the availability of the proposed scheme is verified through numerical simulation

標簽： Control Helicopter Guaranteed Quadrotor Adaptive Strategy Improved Quantum Delay State

上傳時間： 2017-07-15

上傳用戶：bingzi_ml
numerical Recipes in C (2nd)

數值分析

標簽： numerical Recipes 2nd

上傳時間： 2019-01-23

上傳用戶：xuxj4me
Full-Duplex+Small+Cells

The recent developments in full duplex (FD) commu- nication promise doubling the capacity of cellular networks using self interference cancellation (SIC) techniques. FD small cells with device-to-device (D2D) communication links could achieve the expected capacity of the future cellular networks (5G). In this work, we consider joint scheduling and dynamic power algorithm (DPA) for a single cell FD small cell network with D2D links (D2DLs). We formulate the optimal user selection and power control as a non-linear programming (NLP) optimization problem to get the optimal user scheduling and transmission power in a given TTI. Our numerical results show that using DPA gives better overall throughput performance than full power transmission algorithm (FPA). Also, simultaneous transmissions (combination of uplink (UL), downlink (DL), and D2D occur 80% of the time thereby increasing the spectral efficiency and network capacity

標簽： Full-Duplex Cells Small

上傳時間： 2020-05-27

上傳用戶：shancjb
numerical Techniques in Electromagnetics

Theartofcomputationofelectromagnetic(EM)problemshasgrownexponentially for three decades due to the availability of powerful computer resources. In spite of this, the EM community has suffered without a suitable text on the computational techniques commonly used in solving EM-related problems. Although there have been monographs on one particular technique or another, the monographs are written for the experts rather than students. Only a few texts cover the major techniques and dothatinamannersuitableforclassroomuse.Itseemsexpertsinthisareaarefamiliar with one or a few techniques but not many seem to be familiar with all the common techniques. This text attempts to fill that gap.

標簽： Electromagnetics Techniques numerical in

上傳時間： 2020-05-31

上傳用戶：shancjb
VCSELs and EELs

InGaAs/AlGaAs semiconductor lasers come in threetypes: VCSELs and two types of EELs. The VCSEL, asits name implies, emits vertically, normal to the planeof the device, owing to cavity mirrors grown withinthe epitaxial material itself. The VCSEL’s circular beamhas a numerical aperture (NA) of roughly 0.2, or a fullangle of approximately 25 degrees.

標簽： tof

上傳時間： 2022-02-12

上傳用戶：

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numerical

dmath

a sub-cell WENO reconstruction method

Trade and Heterogeneous Labor

numerical Recipes in C

通過提高保證成本的狀態延遲控制和量子自適應控制的一臺四輪直升機的控制策略

numerical Recipes in C (2nd)

Full-Duplex+Small+Cells

numerical Techniques in Electromagnetics

VCSELs and EELs