双基地雷达的侦察识别

本文主要探讨双基地雷达的侦察识别方法。在分析双基地雷达特征的基础上，提出了两种双基地雷达的识别方法，简单识别法只能识别双基地雷达发射站并确定其参数；相关识别法能同时对双基地雷达发射站和接收站实现侦察识别和定位。计算机模拟证实了这两种识别方法的可行性和有效性。     

基于Matlab的多速度模式电梯群控系统模型仿真

多速度模式运行是现代中高速电梯的重要特征，而运行仿真是电梯群控仿真研究的基本环节。应用面向对象技术和基于事件扫描的数字仿真技术，在通用的Matlab开发环境中实现了电梯的多速度模式仿真，为电梯群控策略的研究与开发提供了优良的基础平台。仿真实验引进了一种简单而新型的群控策略，仿真结果表明该仿真平台的实用性，具有一定的应用价值。     

基于复合物信息和亚细胞定位信息的关键蛋白质识别

针对蛋白质相互作用(protein-protein interaction,PPI)网络中存在大量噪声,以及现有关键蛋白识别方法的挖掘效率和预测准确率不高等问题,提出一种基于复合物信息和亚细胞定位信息(united protein complexes and subcellular locallizations,PCSL)来识别关键蛋白质。首先,整合PPI网络的拓扑属性、生物属性和空间属性构建加权网络,以降低PPI网络中噪声的影响,达到提升PPI网络的可靠性的目的;其次,根据复合物信息和空间信息,设计一种衡量蛋白质关键性的度量,从多维角度强化关键蛋白质在PPI中的重要程度;最后,利用基于PPI网络拓扑特性的寻优算法,设计一种新的试探策略,提升挖掘关键蛋白质的效率。PCSL方法应用在DIP(database of interacting protein)数据集上进行验证。实验结果表明,与其他10种关键蛋白质识别方法相比较,该方法具有较好的识别性能,能够识别更多的关键蛋白质。     

BOM-based design knowledge representation and reasoning for collaborative product development

Modern product development becomes increasingly collaborative and integrated, which raises the need for effectively and efficiently sharing and re-using design knowledge in a distributed and collaborative environment. To address this need, a framework is developed in this research to support design knowledge representation, retrieval, reasoning and fusion, which takes account of structural, functional and behavioral data, various design attributes and knowledge reasoning cases. Specifically, a multi-level knowledge representation based on the Base Object Model (BOM) is proposed to enable knowledge sharing using Web services technologies. On this basis, a multi-level knowledge reuse method is developed to support the retrieval, matching and assembly of knowledge records. Due to the tree structure of BOM, both depth-first and breadth-first searching strategies are employed in the retrieval algorithm while a novel measure is proposed to evaluate similarity. Moreover, a method based on the D-S evidence theory is developed to enable knowledge fusion and thus support effective decision-making. The framework has been implemented and integrated into an HLA-based simulation platform on which the development of a missile simulation example is conducted. It is demonstrated in the case study that the proposed framework and methods are useful and effective for design knowledge representation and reuse.     

基于山科PLC的高速灌装线专用控制系统

针对食品安全、溯源及监管的需求,在已有高速灌装线上加装了基于OmniView的视频检测系统,设计、开发了高速灌装生产线专用控制系统。控制系统应用WINCE Qt 4.7.3,基于山科PLC平台开发,具有包装外观质量检测、不良产品剔除以及生产日期/条码&二维码/批次编码校验等专用功能,实现了灌装、检测的融合。该系统已经在大容量装液体食品无菌砖型纸盒灌装机中应用,满足了灌装线的高速要求,运行稳定、可靠,提升了灌装产品的质量,为产品的整个追溯过程提供了依据。     

Role of trivalent antimony in the removal of As, Sb, and Bi impurities from copper electrolytes

The role of trivalent antimony was investigated in removing As, Sb, and Bi impurities from a copper electrolyte. Purification experiments were carried out by adding a various concentrations of Sb(III) ions in a synthetic electrolyte containing 185 g/L sulfuric acid, 45 g/L Cu2+, 10 g/L As, and 0.5 g/L Bi under stirring at 65℃ for 2 h. The electrolyte was filtered, and the structure, morphology and composition of the precipitate were analyzed by means of chemical analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and IR spectroscopy. The precipitate is composed of irregular lumps which are agglomerated by fine dendritic and floccus particles, and it mainly consists of As, Sb, Bi, and O elements. Characteristic bands in the IR spectra of the precipitate are As-OX (X=As, Sb, Bi), Sb-OY (Y=Sb, Bi), O-As-O, As-OH, Sb-OH, and O-H. The precipitate is a mixture of microcrystalline SbAsO₄, (Sb,As)₂O₃, and amorphous phases. As, Sb, and Bi impurities are effectively removed from the copper electrolyte by Sb(III) ions attributing to these precipitates.     

织金县垮坡组滑坡变形失稳原因分析

为研究垮坡组滑坡变形失稳原因及影响因素,结合已有的资料和地质调查资料分析,运用构造地质学、工程地质力学、无人机、物探等手段方法进行了研究。结果表明:从整个地质环境来看该斜坡体已经具备了滑坡的地质条件;连续几天的强降雨增加了滑坡体自重,极大降低了滑坡的稳定性,降雨是促使滑坡滑动的主要外在因素;在连续强降雨情况(达到饱水工况下)失稳,其变形破坏模式为压致-拉裂型。     

Effect of austenitizing temperature on microstructure in 16Mn steel treated by cerium

The change of inclusions and microstructure of 16Mn steel treated by Ce were observed, and the effect of austenitizing temperature on the microstructure was also examined. The results show that the inclusions are transformed from Si-Mn-Al composite oxide and MnS into AlCeO₃, Ce₂O₂S, and MnS composite inclusions after being treated by Ce. Plenty of intragranular ferrites are formed in 16Mn steel containing ～0.017wt% Ce. A large amount of intragranular acicular ferrites are formed after being austenitized for 20 min at 1473 K. The prior austenite grain size fit for the formation of intragranular acicular ferrites is about 120 μm.     

主成分聚类分析在省域物流规划中的应用

提出利用主成分聚类分析的方法对省域物流规划中各地区的物流发展进行综合评价并分类.建立区域物流发展评价指标体系,利用主成分分析能够剔除多指标间存在相关性及信息重叠的特点,对各地区的物流发展综合实力进行评价,再利用新得到的综合主成分指标代替原来较多的评价指标,对省内各地区的物流发展进行聚类分析.该方法不但能够使原来复杂的问题简单化,而且所得结论客观、可信、较有说服力.研究结果表明本文提出的方法合理可行.     

古代中西方人性善恶论比较

人性是人的自然属性,自然属性无所谓善恶;善恶是人的社会属性,社会属性呈现出优劣.正是有了社会,人性才有善恶之分.人性善恶论是伦理学最基本问题之一,是中西方文化差异的根源之一.要正视人性弱点,善待人性,给予人性正常自然的发展空间,使人类社会自然和谐地发展.