贫困地区摆脱困境的对策研究

在简要分析贫困地区经济落后形成原因的基础上,提出了打破贫困循环、走向富裕之路的对策建议．     

分布交互仿真系统支撑软件的研究

分布交互仿真是一种新兴的仿真技术,是指利用计算机网络将分布在各地区的仿真器和仿真人员联结起来,使众多仿真器在大范围内可进行综合性能测试及培训。     

Modeling and Solving Material Resources Allocation and Distribution with OR Based and AI Guided Method

ＭｏｄｅｌｉｎｇａｎｄＳｏｌｖｉｎｇＭａｔｅｒｉａｌＲｅｓｏｕｒｃｅｓＡｌｏｃａｔｉｏｎａｎｄＤｉｓｔｒｉｂｕｔｉｏｎｗｉｔｈＯＲ┐ＢａｓｅｄａｎｄＡＩ┐ＧｕｉｄｅｄＭｅｔｈｏｄ⒇ＣＨＥＮＸｕｅｇｕａｎｇ＊ＬＵＫｅＦＥＩＱｉＨｕａｚｈｏｎｇＵｎｉｖｅ...     

基于Petri网的企业高新技术产业化进入战略研究

讨论企业高新技术进入战略的类型,并运用Ｐｅｔｒｉ网理论对企业制订高新技术进入战略的过程进行了描述与分析。结果表明,Ｐｅｔｒｉ网理论在战略管理领域具有潜在的应用价值。     

Studies on the Structures and Properties of Latent - crimp Copolyestcr Fibers

The internal causes of latent-crimp were analyzed bystudying the supermolecular structures of the standardpolyester fibers(PET),copolyester fibers(IPET)andtheir side-by-side composite fibers(PET/IPET)inthis paper.It is concluded that IPET and PET/IPEThave better latent-crimp ability because of their asym-metric supermolecular structures.At the same time,they have good dyeability and mechanical properties.Soit is a simple and low cost process to manufacture latent-crimp continuous fibers by melt-spinning of the co-polyester IPET.     

Subunit Structure and Conformation of Bombyx Mori Silk Proteins

Molecular weights of the silk fibroin were determined by polyacrylamide gel electrophoresis in the presence of so-didium dodecyl sulfate (SDS - PAGE): The silk fibroin molecule consisted of subunits a, b and c with molecular weights of 280 kD, 230 kD and 25 kD respectively, of which the b subunit was composed of two subunits e and f with molecular weights of 130 kD and 125 kD, respec-tively, connected by disulfide bonds. The conformation of silk fibroin and subunits was determinated by Raman spectroscopy and Large angle X - ray diffraction) LAXS. The native silk fibroin only contained a - helix and random coil, but there were three conformation such as random - coil.a - helix and β - sheet in the silk fibroin dissolved in KSCN solution and frozen at - 20 °C. This suggested that KSCN solution and - 20°C freezing action could lead to the conformational transi-tion from random - coil and a - helix to P - sheet. The a subunit mainly existed in β - sheet conformation, in con-trast, the c subunit was chie     

基于玫瑰线扫描双色信息融合目标识别方法

图形扫描复合制导是当今深受国内外重视的一种制导方式。虽然玫瑰线扫描双色导引头技术已在战术地空导弹中得到了应用,但目前主要将其作为一维信号加以处理,不利于目标的识别与信息融合。本文的基本思想在于将玫瑰线扫描得到的一维波形转化为二维准成像图像,同时引入目标、背景以及诱饵的红外与紫外概率模型,采用Ｄｅｍｐｓｔｅｒ证据理论将红外和紫外准成像图像进行融合,以提高系统去除诱饵即假目标的能力。模拟实验结果证明了本文所提出方法的有效性和可行性。     

广义加权比例平均组合预测技术研究

本文提出了一类广义加权比例平均组合预测技术。新的组合预测技术比传统的组合预测技术更具有优越性,能取得更好的组合预测效果。     

一种高分辨率频谱特征提取方法的研究

本文着重研究基于高分辨率雷达视频回波的目标特征提取问题。提出了基于ＡＲ模型动态地获取目标极点信息,利用获取的目标极点信息对线性调频变换进行初始参数的设置,雷达视频回波经基于此参数线性调频变换获得高分辨率频谱特征的新方法,并用这种方法对实地录取的地面目标视频回波数据进行处理提取高分辨率频谱特征。最后,利用所构造可分性测度计算了该模式特征的可分性测度值并与付里叶谱特征的可分性测度值比较,证明本文提出的方法具有更好的可分性,是一种良好的高分辨率目标频谱特征提取方法。     

含单羟乙基蜜胺的阻燃剂的碳化及阻燃作用

用热重分析法研究了以多聚磷酸铵和单羟乙基蜜胺复配的膨胀型阻燃剂（ＩＦＲ）的碳化及其对聚丙烯（ＰＰ）的阻燃作用．结果表明,ＩＦＲ和空气中的氧参与了ＰＰ的热分解反应,促进其生成了对热比较稳定的富碳物质,使热重残余率增加．但燃烧结果指出,ＩＦＲ－ＰＰ阻燃体系的阻燃性能主要取决于ＩＦＲ的组成,ＩＦＲ中单羟乙基蜜胺与多聚磷酸铵之比为１／５时对ＰＰ的阻燃作用最好