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Search Results: 1 - 10 of 309908 matches for " 刘晓宇 "
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中国饲料工业期货的价格发现实证研究

中央财经大学学报 , 2006,
Abstract: ?本文借助向量自回归模型、协整检验、误差修正模型、方差分解、脉冲响应函数等方法,以中国唯一的饲料工业期货——大连商品交易所豆粕期货品种为例,研究了期货价格与现货价格之间的动态关系,定量刻画了期货市场在价格发现中的作用。研究结果显示:豆粕期货价格与现货价格存在相互引导关系,并且期货与现货价格之间存在长期均衡关系,对豆粕期货来说,期货市场在价格发现功能中起到主导作用。
CFRP加固混凝土短柱轴压性能研究
Performance Study on Axial Compression of CFRP-Strengthened Concrete Columns
 [PDF]

, 王清远, 王志
Hans Journal of Civil Engineering (HJCE) , 2015, DOI: 10.12677/HJCE.2015.43014
Abstract:
通过对6个混凝土柱的静力加载试验,本文研究了碳纤维布加固对不同截面混凝土柱的力学性能的影响,分析了碳纤维布粘贴层数及短柱截面类型对碳纤维布加固效果的具体影响。结果表明:碳纤维布可明显提高混凝土柱的刚度和极限承载力,减小柱的竖向位移,减小柱的横向应变和纵向应变;当碳纤维布粘贴层数为两层时,其影响程度比粘贴一层时更为显著,但其提高程度不与加固面积成正比;碳纤维布加固对混凝土圆柱极限承载力和刚度的提高优于对混凝土方柱的提高。
Through the static load test of six CFRP reinforced concrete columns, the paper studies the CFRP reinforced concrete columns with different cross section of the influence of mechanical properties, and analyzes the specific influence of the carbon fiber cloth paste layer and column’s section type to carbon fiber cloth reinforcement effect. The results show that: Carbon fiber cloth can obviously increase the stiffness and ultimate bearing capacity of concrete columns, reduce the vertical dis-placement of column and reduce the lateral strain and the axial strain of the columns. When the paste layer of carbon fiber cloth is two, the impact is more obvious. But the increase degree is not proportional to the reinforced area; the improvement of carbon fiber cloth reinforcement to con-crete columns’ ultimate bearing capacity and stiffness is superior to the improvement of concrete square column.
无线接入宽带网中的安全通信
,陈明奇
计算机科学 , 1999,
Abstract: 1 引言移动通信在过去二十年中获得了飞速发展,已成为现代通信中一个极为重要的领域。国际互连网的发展以及随之而来的网络信息时代要求移动通信系统能够提供多媒体业务。因此,从九十年代中期开始,人们致力于第三代移动通信系统的开发和研究,以提供移动多媒体通信能力并获得与固定通信网相当的业务质量。
环境微生物基因组技术研究进展
,
生物技术通报 , 2006,
Abstract: 环境微生物基因组学是基于功能和序列的基础上对得到的环境样品基因组进行分析的科学,是目前国际生物技术研究开发的最新热点之一。对环境微生物基因组技术的概念、研究策略和筛选方式进行了介绍,并对该技术存在的问题和未来发展方向做了展望。
454测序法在环境微生物生态研究中的应用
,
生物技术通报 , 2010,
Abstract: 传统的Sanger测序技术虽已成熟,但其速度和成本的限制满足不了大规模测序的要求。第二代高通量测序技术结合了乳胶微粒和皮升级反应的454焦磷酸测序法,作为一种高通量测序技术,具有分析结果准确、高速、高灵敏度和高自动化的特点。对454测序法的技术原理和操作步骤进行了介绍,对近年来运用该方法在环境微生物生态研究领域的进展进行了综述。
无线接入宽带网中的安全通信
陈明奇?
计算机科学 , 1999,
Abstract:
基于FlexPaper的校内公示系统设计与实现
Design and Implementation of a University-Wide Document Sharing System Based on FlexPaper Technique
 [PDF]

李降, 杨雨濛,, 化总
Computer Science and Application (CSA) , 2015, DOI: 10.12677/CSA.2015.51001
Abstract:
大连理工大学每年有大量的公示材料,涉及到职称评审、升职考核、竞聘材料等等,有些公示材料只能查看不允许下载,或者需要对公示材料设置查看和下载的权限。设计与实现符合大连理工大学需要的校内公示系统,既要保证教师公示材料的安全可靠,同时又要满足公示材料全校范围内的分享阅读。校内公示系统基于FlexPaper技术设计实现方案,将office文件等转换成pdf文件,再将pdf文件转换为swf文件,在校内门户页面使用FlexPaper插件播放公示文件,该技术方案成熟可靠并被广泛使用。系统架构设计采用业界领先的基于领域驱动的开发方式,分为表现层、系统应用层、应用支撑层、数据资源层及基础平台层,业务逻辑集中在领域层,系统采用我校统一的信息安全体系和标准规范,使系统具有高可用性、高可靠性及高性能。
Every year, Dalian University of Technology produces a huge amount of publicity material related to human resource management work, such as the professional title evaluation, promotion evaluation, competitive selection etc. Some of these publicity documents are restricted to read only, and no downloading is allowed, or different reading/downloading permissions are set to different documents. Considering designing a document sharing system corresponded with the actual needs of the university, it is important to guarantee both the security and the school-wide sharing me-chanism of the publicity documents. Document Sharing System is based on the FlexPaper technical proposal. After converting Microsoft office files to pdf files, swf tools can be used to change pdf files to swf files, then these documents can be loaded on the university portal website using FlexPaper plugin which is reliable and widely used by many companies. The system architecture, based on the industry-leading Domain Driven Design approach, is divided into presentation layer, system appli-cation layer, application support layer, data source layer and basic platform layer. Business logic is concentrated in the domain layer and the cluster-based load balancing and cache make the system with high availability, high reliability and high performance.
基于数字化校园的高校教师公寓管理信息系统设计与实现
The Design and Implementation of University Teachers Apartment Management System Based on the Digital Campus
 [PDF]

化总, 李降, 杨雨蒙,
Computer Science and Application (CSA) , 2015, DOI: 10.12677/CSA.2015.53008
Abstract:
随着我校发展战略的实施和推进,不断扩大人才引进和人才交流,适时推出周转教师公寓较好的解决了教师的后顾之忧,但供需矛盾很突出,给管理带来了很大的困难。无论是校内教师、短期交流人才,还是管理部门,均迫切需要建立适合于我校的教师公寓管理系统。通过建设基于数字化校园的功能齐全的教师公寓管理系统,简化了教师的办事流程,公开透明租房规则和结果,避免教师与管理部门的矛盾,减轻管理部门的工作量,提高公寓的利用率和教师的满意度。
With the incessant implementation and promotion of our university’s development strategy, talent introduction and personnel exchanges are expanding. A timely introduction of temporary teacher-apartments becomes the way to liberate teachers from accommodation worries. However, the contradiction between supply and demand is very prominent that puts more stress on man-agement. Whether the school teachers, short-term exchange personnel or administrative depart-ments are in urgent need of establishing a teacher’s apartment management system which is suit-able for our university. An all-round teachers apartment management system can helps to simplify teachers’ service procedure, open and transparentize the apartment renting rules and results, avoid conflicts between teachers and administrative departments, reduce the management work-load and can improve the utilization rate of apartment and teachers’ satisfaction degree.
刑事诉讼简易程序改革研究
,
比较法研究 , 2011,
Abstract:
空腔非局域反应声衬传播特性研究
杜林,,
工程热物理学报 , 2005,
Abstract: 本文对声波在空腔非局域反应声衬管道内的传播进行了研究。特征方程通过声衬内和管道内两部分声场的耦合求解得到,并采用积分方法对特征方程积分求解,通过模态匹配的方法建立并求解了有限长管道非局域反应声衬的声辐射数值模型,展示了在管道消声主动控制方面的应用潜力。
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