信息化环境下军队院校新装备教学保障资源建设问题研究

新装备教学保障资源建设是提高教学能力的重要组成部分。在信息化环境下,利用现代信息技术对教学保障资源建设问题进行研究,对于提高教学能力,培养高素质具有积极促进作用。文中从信息化环境加强新装备教学保障资源建设“设施配套难、建设效益难和资源共享难”三个方面的问题分析入手,探讨了在信息网络环境中加强保障资源建设的主要方法,并紧紧围绕着围绕“建设时间和建设质量、硬件建设和软件建设、主战装备和保障装备、短期目标和长期规划”四个关键问题给出了相应对策,并提出了“编组整合、二次开发、顶层设计”的建设建议。     

扬州电信ODN规模部署方案浅析

如何在经济、快捷的条件下规模部署ODN正成为电信运营商亟需解决的问题,以此为出发点,根据扬州电信的建设经验,从OLT部署、主干光缆建设、配线光缆建设等方面,探讨了ODN规模部署方案。     

IDC建设节能思路探讨

主要从IT设备的选择、地理位置的选择、免费冷源的选择、建设标准的影响和云计算带来的影响等方面探讨了在互联网信息中心建设和运营的过程中需要注意的问题。     

门诊医生工作站在我院的应用和体会

门诊医生工作站是门急诊医生借助计算机网络,实现病人信息采集、处理、存储、传输和服务,实现对门急诊病人信息管理的计算机软件系统。将先进的计算机技术、数据库技术和临床知识应用于门诊医生工作站,可以实现医疗管理信息化和数字化,从而提高医院的管理水平、提高医生的工作效率和服务质量。本文将阐述我院实施门诊医生工作站的具体做法,以及在实施过程中遇到的问题及解决方案等,希望对同行有所帮助。     

The growth of mixed alkaline-earth fluorides for laser host applications

A comprehensive analysis is implemented concerning the growth, properties, and applications of doped-co-doped single and mixed alkali earth fluoride systems. Calcium-strontium fluoride solid solutions with a Sr content proportion varying widely between 0.007 and 0.675 mol.% are obtained as a batch of axis-symmetrical boules grown by a Bridgman-Stockbarger (BS) method. The crystallization front (CF) can be controlled to retain a convex CF-shape that is favourable for normal growth of single crystals. This achieved using a broad adiabatic furnace zone (AdZ) independently of the boules’ composition. The influence of the thermal field distribution on the CF and the real crystallization rate (CR), which are both critically decisive in controlling crystal quality, were originally assessed using empirically derived formulas. The optical characteristics of the grown boules were monitored by measuring the external transmittance t and calculating the total losses following light irradiation of optical windows that were prepared from sections of the boules that had been cut parallel to one another. The t-measurements were performed by two different techniques and the comparative analysis of the results reliably indicates any inhomogeneity in the grown boules. A simple supercooling criterion proved to closely relate the morphological stability of the CF enabling one to set up the optimum growth conditions. Thus the normal growth criterion outlines the concentration bounds where the isotropic growth mechanism is replaced by cellular anisotropic growth. A procedure has been established for provisioning researchers with optical quality calcium-strontium fluoride crystals with widely varying composition grown under practically identical conditions. As a consequence one can explore possible reasons that can affect the growth mechanism for this or any other systems with a fluoride structure and so provide scope aimed at the future improvement of the crystal quality thereby enlarging the field of mixed fluoride systems’ applications.     

工程供应链风险源的识别与控制策略研究

工程项目的复杂性造成了工程风险的普遍性,风险管理是工程管理的主要内容。本文针对传统的工程风险管理与控制的不足,基于工程供应链的视角,立足于工程生命周期角度重新审视了工程风险。从系统的观点出发,工程供应链是一个复杂系统,可划分为供应商管理、供应链运作管理、"制造商"管理三个子系统,系统或子系统在系统内生因素和外生因素的干扰下会产生中断和延迟两种风险结果,因此共形成六种工程供应链风险组合。本文在建立了多维度风险识别框架的基础上,从上述六方面识别了工程供应链风险的来源,并提出了应对策略。     

构造接近香农极限的低密度校验码

低密度校验(LDPC)码的性能优劣在很大程度上取决于该码的最小环长(Girth)和最小码距。本文采用几何构造方法构造最小环长为8的LDPC码,联合随机搜索算法改善其码重分布,所构造的LDPC码在码长为4k、编码效率为0.95时,距离香农极限仅1.1dB。     

Constructing integral matrices with given line sums

D. Gale, in 1957 and H.J. Ryser, in 1963, independently proved the famous Gale–Ryser theorem on the existence of (0, 1)–matrices with prescribed row and column sums. Around the same time, in 1968, Mirsky solved the more general problem of finding conditions for the existence of a nonnegative integral matrix with entries less than or equal to p and prescribed row and column sums. Using the results of Mirsky, Brualdi shows that a modified version of the domination condition of Gale–Ryser is still necessary and sufficient for the existence of a matrix under the same constraints. In this article we prove another extension of Gale–Ryser’s domination condition. Furthermore we present a method to build nonnegative integral matrices with entries less than or equal to p and prescribed row and column sums.     

高等职业教育教学资源库建设校企合作保障机制研究

保障机制是实现资源库建设、推广和应用等工作有序实施的重要一环。文章分析了当前我国高等职业教育教学资源库建设中资源与企业需求结合不够紧密、建设机制不健全、企业参与度不高等问题, 并从制度保障、组织保障、运行保障和经费保障四个方面提出了构建资源库建设的保障体系, 以破解当前校企共建中存在的瓶颈。     

自主招生模式下高职适应性教材建设的探索

文章通过对高职教材结构和学生知识层次做全面分析,探讨了自主招生模式下高职教材存在的适应性问题, 提出了建设适应性教材的途径,以保证不同招生类别学生都能利用适应性教材与高职教育阶段学习内容相适 应,从而全面提高教学质量。