Office Chart 11组件在C#.NET数据库开发中的应用

本文介绍了MOC组件的安装与使用,并给出了C#.NETforWindows数据库项目开发中应用MOC组件编程的一个实例。     

MOC组件及其基于C#．NET的汽车行驶记录系统开发中的应用

本文介绍了MOC组件的安装与使用，并以汽车行驶记录系统开发为例对基于C#．NET for Windows项目开发中应用MOC组件做了进一步探索。     

MOC3050系列光电双向可控硅驱动器

<正>MOC3050系列光电双向可控硅驱动器是美国摩托罗拉公司最近推出的光电新器件.它可以用直流低电压、小电流来控制交流高电压、大电流.该系列器件的特点是大大地加强了静态dV/dt能力,保证电感负载稳定的开关性能.由于输入与输出采用光电隔离,绝缘电压可达7500V.MOC3050系列有MOC3051及MOC3052,它们的差别仅触发电流不同,前者最大触发电流为15mA,而后者为10mA.MOC3050系列可以用它来驱动工作电压为220V(交流)双向可控硅;当交流负载电流较小时,如200mA以下,也可以用它来带负载.MOC3050系列产品适用于电磁铁及电磁阀控制、马达控制、温度控制等,也用于固态继电器、交流电源开关等场合.由于是光电隔离,并且能用TTL电平驱动,它很容易与微处理器接口,进行各种自动控制设备的实时控制.     

超频玩家集结 微星MOC 2008十强选手公布

MOC 2008:超频玩家的盛会经过为期1个月的海选,微星MOC 2008极限超频争霸赛盛世的战火已经蔓延至全国.来自全国21个省市地区的15万玩家     

基于GCMR的中子输运方程模拟加速算法研究

特征线方法(MOC)由于较强的复杂几何适应能力,广泛用于中子输运方程的求解.但是MOC方法存在收敛速度慢、计算耗时长的问题,因此目前普遍采粗网有限差分法(CMFD)对MOC求解过程进行加速.然而目前常用的CMFD方程不能保证偏中子流守恒,同时在一些情况下存在发散的问题.为此考虑采用广义粗网再平衡方法(GCMR)对MOC求解过程进行加速.推导了基于GCMR方法的中子通量求解方程,并在DRAGON程序中加入了 GCMR加速模块.最后结合C5G7-2D基准题对GCMR算法进行了验证,并与CMFD加速方法进行了对比.结果表明,GCMR具有与CMFD相同的加速效果,但是求解精度优于CMFD.     

趋势科技成立值守防病毒监测中心

9月19日,趋势科技联合天津国家计算机病毒应急处理中心、北京神州泰岳软件股份有限公司、上海电信、广州网域科技等国内四家知名合作伙伴共同建立趋势科技防病毒监测中心(MOC)。此次MOC合作伙伴覆盖     

微星MOC 2008十强选手公布

MOC 2008：超频玩家的盛会 经过为期1个月的海选，微星MOC 2008极限超频争霸赛盛世的战火已经蔓延至全国．来自全国21个省市地区的15万玩家积极参与到本次活动当中。中国香港地区和中国台湾地区超频选手亦是跃跃欲试．     

最新器件快讯

功率开关——固态继电器美国摩托罗拉公司最近推出型号为MOC2A60-10功率开关——固态继电器(1994年产品)。这是一种光电隔离、过零触发、双向可控硅输出的功率开关器件。工作电压交流280V,工作电流可达2A,输入与输出之间耐压3750V。 MOC2A60-10的工作原理图及器件外形如图1所示。输入部分由红外发光二极管组成,输出部分由光控可控硅、过零触发电路及功率双向可     

多段时间温度智能温控系统的研究

介绍一种单片机多段时间温度智能控制系统,利用TM7705进行当前温度的采集,MOC3061进行输出控制.给出了系统连接框图和硬件电路图,同时介绍了系统的工作原理及主要的软件实现.     

巅峰对决

9月26日．万众期待的微星MOC2008极限超频争霸赛的北京决赛在北京西苑饭店展开．分别排在初赛阶段极限组和风冷组前十名的二十位超频高手在这里一决高下。     

基于遗传算法的自适应中值-开闭滤波器

提出了一种新的中值-开闭滤波器结构，并以此为基础设计了自适应中值-开闭滤波器。该滤波器由一个中值-开闭滤波器和学习优化模块组成。在学习优化子模块中，应用遗传算法，通过对含噪声的图像样本进行学习，使得该滤波器的结构能根据待滤波的输入图像自动地调整以获得最优的滤波效果。计算机仿真实验表明该滤波器具有非常好的噪声滤除能力和滤波效果。     

Estimating friction errors in MOC analyses of unsteady pipe flows

Errors arising from the numerical treatment of friction in unsteady flows in small pipe networks are assessed for fixed-grid, method of characteristics analyses (MOC) with no interpolation. Although the results of the study are targeted at general unsteady flows, the underpinning analytical development is based on the behaviour of standing waves. This enables quantitative conclusions to be drawn about the sensitivity of MOC solutions to frequency. The development is undertaken first for a single pipe and then for networks, with and without a loop. The performance of MOC solutions is modelled with the aid of polynomial transfer matrices that are analogous to transfer function matrices available directly from partial differential equations of water hammer. It is found that, in a single pipe, the numerical errors tend to increase damping at all frequencies, but that, in networks, either increased or decreased damping may occur. The errors place both higher and lower limits on the frequencies that can propagate along a pipe in a numerical analysis. This contrasts with the physical case where only a lower limit exists. The work presented is part of a wider project with the long-term aim of automating the selection of numerical grid sizes in MOC analyses of unsteady flows.     

The 2-modular Decomposition Matrices of the Non-principal Blocks of Maximal Defect of the Triple Cover of the Sporadic Simple McLaughlin Group

The calculation of the modular character tables of 3.McL is completed by the determination of the 2-modular decomposition numbers of the faithful irreducible ordinary characters of 3.McL. The results are obtained by using the computer algebra systems MOC, Meat-Axe and GAP, and by applying condensation methods.     

A multiple organ segmentation system for CT image series using Attention-LSTM fused U-Net

Multimedia Tools and Applications - The multi-organ contouring (MOC) task is required when a radiotherapy is performed to eradicate the cancerous tissue while minimizing the dosage delivered to the...     

Robust design of multilayer optical coatings by means ofevolutionary algorithms

Robustness is an important requirement for almost all kinds of products. This article shows how evolutionary algorithms can be applied for robust design based on the approach of Taguchi. To achieve a better understanding of the consequences of this approach, we first present some analytical results gained from a toy problem. As a nontrivial industrial application we consider the design of multilayer optical coatings (MOCs) most frequently used for optical filters. An evolutionary algorithm based on a parallel diffusion model and extended for mixed-integer optimization was able to compete with or even outperform traditional methods of robust MOC design. With respect to chromaticity, the MOC designs found by the evolutionary algorithm are substantially more robust to parameter variations than a reference design and therefore perform much better in the average case. In most cases, however, this advantage has to be paid for by a reduction in the average reflectance. The robust design approach outlined in this paper should be easily adopted to other application domains     

单片机控制的自来水节能加热装置

介绍了自来水节能加热装置的原理、硬件设计和软件设计。装置主要由89C51、单片数字温度传感器DS1820、双向可控硅驱动电路MOCm3041和双向可控硅TLC336A等组成。     

Floating grid characteristics method for unsteady flow over a mobile bed

In this paper, we present a new application of the method of characteristics (MOC) for the 1D simulation of unsteady flow over a mobile bed. The method is based on the floating grid-of-characteristics approach, which here is amended to take account of the more complex structure of the field of characteristics inherent in the morphodynamics (compared to those for hydro- or gas dynamics). Due to the relative simplicity of the algorithm the technique is particularly well suited to waves moving into a downstream reach that is initially dry. As with all MOC schemes the approach is also attractive because it reveals the underlying (morpho)dynamics as the solution progresses. The mathematical model considered here is based on the depth averaged non-linear shallow water equations directly coupled to a bed update (Exner) equation. Closure is obtained using a simple sediment flux relation. The technique described allows the study of fully coupled sediment transport problems and the associated hydro- and morphodynamic evolution. Numerical results are presented for the evolution of a sand dune in a tidal flow as well as the wet-dry dam-break problem on both a fixed and mobile bed. Results compare extremely well with the analytical or quasi-analytical solutions for the problems presented.     

基于SOC技术的多路温度控制系统设计

设计了一种基于SOC技术的多路温度控制系统。该系统采用了SOC微处理器实现多路相互独立的温度控制,采用数字式温度传感器DS1820和可控硅驱动器MOC3041实现温度采集和同步过零触发。现场运行表明,该系统具有速度快、控制方便、可靠性高等优点,能够适应工业现场等较复杂恶劣的环境。     

最小二乘支持向量机在睡眠打鼾诊断中的应用

支持向量机是数据挖掘和机器学习领域中的重要方法之一,最小二乘支持向量机是支持向量机学习算法的重要扩展,在训练速度方面有明显优势。对支持向量机现有的多类分类算法（一对一方法、一对多方法、纠错输出编码方法和最小输出编码方法）引入了最小二乘支持向量机,并应用于睡眠打鼾疾病的诊断预测中,取得了较好的效果。