实验室服务器规划及其安全策略探讨

阐述了实验室教学管理服务器的规划方法,并总结了服务器系统在安装设置和管理中的一些主要安全策略。     

转炉炼钢脱氧工艺的优化

论述了转炉炼钢脱氧工艺优化的原理,并结合实际对脱氧剂使用工艺进行了探索,成功地在炼钢生产中推广应用.     

元数学对计算机科学的启示

文章提出了元数学对计算机科学的几点启示,这几个方面分别是传统程序设计的概念、机制、要素,数据库技术中的数据模型和函数依赖,面向对象分析和设计方法。文中一方面分析了元数学所提供的理论基础,另一方面说明了在应用方面是如何体现这些理论基础的,并提出了在计算机技术领域中应从数学基础问题、数理逻辑等的相关理论着手寻找突破的思想。     

Quantum Corrected Monte Carlo Simulation of Semiconductor Devices Using the Effective Conduction-Band Edge Method

In recent years much effort has been devoted to the quantum mechanically corrected Monte Carlo simulation of nano-scale semiconductor devices. The effective potential and the Wigner or the Bohm quantum potential are usually chosen for making such quantum correction. In this study we propose another approach based on the Bohm potential by transforming the density gradient to an effective conduction-band edge gradient. Similar to the effective potential method, this method has the advantage of not being affected by density fluctuations. We have applied this method to the simulation of a double-gate nMOSFET. Results are compared to those obtained from the semi-classical Monte Carlo simulation without the quantum correction.     

A Quantum Correction Model for Nanoscale Double-Gate MOS Devices Under Inversion Conditions

A quantum correction model for nanoscale double-gate MOSFETs under inversion conditions is proposed. Based on the solution of Schrödinger-Poisson equations, the developed quantum correction model is optimized with respect to (i) the left and right positions of the charge concentration peak, (ii) the maximum of the charge concentration, (iii) the total inversion charge sheet density, and (iv) the average inversion charge depth, respectively. This model can predict inversion layer electron density for various oxide thicknesses, silicon film thicknesses, and applied voltages. Compared to the Schrödinger-Poisson results, our model prediction is within 3.0% of accuracy. This quantum correction model has continuous derivatives and is therefore amenable to a device simulator.     

泥沙随机起动的简化模式

泥沙的起动既有随机性，又有模糊性，据此作者将模糊数学方法引入泥沙起动研究。建立了直接反映泥沙随机起动特性的起动流速计算模式，该模式得到了实测资料的检验。这一模式可以体现泥沙起动的随机性，较好地反映了泥沙起动的本来面目     

压力容器壳体曲面造型与展开误差分析

采用基于特征的多面体造型方法，解决了压力容器壳体曲面造型的问题，同时，提出了一种筒体展开的算法，并进行了误差分析与修正。     

深部断失矿体的预测与勘探——通用地质坐标系应用实例(之三)

某热液金属矿床主矿体受两组断裂交叉线的控制,采矿中发现在-100m中段以下矿体被后期断层截断。运用通用地质坐标系列公式,可较好地解决深部断失矿体空间位置预测的问题。     

变压器隔离方式的安全栅

论文介绍爆炸产生原因,综合比较自动化仪表各种防爆方法,介绍了最切实有效,最安全可靠的本质安全防爆方法,以本质安全防爆的原理为基础,设计利用隔离变压器来实现安全区和危险区隔离的一种新型的无源隔离式安全栅.