浅谈电力工程施工中的质量管理

电力工程施工质量管理是企业决策者和广大安全工作者都要思考的一个问题,且直接关系到电力施工企业的生存发展,本文浅谈影响电力工程质量的主要因素,并提出电力工程施工中的质量控制措施。     

Sequence similarity analysis of non-self CTL epitopes and mouse proteins using sequence alignment

This research analyzed amino acid sequence similarity between non-self T cell epitopes recognized by mouse antibodies and mouse proteins. Using sequence alignment,we found that only 8 of 1 108 epitopes are highly similar to mouse protein sequences. The result shows that non-self T cell epitopes are not similar or have little similarity to mouse protein sequences. Furthermore,reviewing the related literature,we also found that the eight epitopes would trigger immune responses in some particular environment,which are ignored by T cells in normal condition. The result suggests that no or low-similarity peptide vaccines can reduce the chance of collateral cross-reactions and enhance the antigen-specific immune response to vaccine.     

Learnability of multi-instance multi-label learning

Multi-instance multi-label learning(MIML) is a new machine learning framework where one data object is described by multiple instances and associated with multiple class labels.During the past few years,many MIML algorithms have been developed and many applications have been described.However,there lacks theoretical exploration to the learnability of MIML.In this paper,through proving a generalization bound for multi-instance single-label learner and viewing MIML as a number of multi-instance single-label learning subtasks with the correlation among the labels,we show that the MIML hypothesis class constructed from a multi-instance single-label hypothesis class is PAC-learnable.     

Automatic identification of use cases from codes: A user’s goal driven approach

Based on the different roles played by base flow and alternative flow in the process to achieve user’s goals, we have found that loop structure is frequently used to implement alternative flow and/or to connect different use cases. This paper presents an approach to identify base flows and alternative flows of different use cases by traversing control flow graph in which back edges are eliminated. The effectiveness of the approach is verified by identification of the use case structure of an ATM system. The workload of human intervention of the approach is relatively slight, and the manner of human intervention closely follows the usual process of software comprehension.     

从跨文化交际视角探析图式理论在词汇习得中的移入策略

词汇是语言的核心组成部分,语言是文化的载体,词汇与文化有着紧密的联系。图示理论在目的语词汇习得过程显得尤为重要。文化图示对词汇习得有较深的影响,文化图式在词汇习得中的移入策略为:母语文化图式的激活,目的语文化图示的建构,母语、目的语文化图示的对比。     

弹性模量对砖石古塔抗震性能的影响

根据某砖石古塔几何尺寸和结构构造,运用大型有限元软件ANSYS对其在不同弹性模量下进行了动力特性分析和等效地震侧力下抗震性能的研究。结果表明:弹性模量对砖石古塔结构的抗震性能影响较大。     

中小企业自主创新障碍及对策

创新是一个国家和一个地区经济发展的不竭动力，文章从中小企业在自主创新过程中的障碍入手，为中小企业如何提高自主创新能力提供建议。     

温情 诗意 成长——《草房子》的死亡叙事探析

《草房子》是曹文轩成长小说的代表作，小说的叙述多次涉及死亡。其死亡叙事充分体现了三方面的特征：即充满了浓浓的温情；诗意的叙述；死亡是儿童精神成长的特殊契机。     

Morphological control of zinc tricarbohydrazide perchlorate crystals: Theoretical and experimental study

The theoretical crystal-morphology of zinc tricarbohydrazide perchlorate (ZnCP) was studied using the morphology simulation software. The growth trends and surface characteristics were calculated using the Bravais-Friedel-Donnay- Harker (BFDH), Growth Morphology, and Equilibrium Morphology methods; these provide theoretical guidance for the choice of crystal-control reagents. On the basis of the simulations, experiments were carried out to study the effects of five different crystal-control reagents, including carboxymethylcellulose (A), polyacrylamide (B), dextrin (C), Tween 40 (D), and Tween 60 (E), in the control of the crystal-morphology of ZnCP. Mixtures of two reagents and higher temperatures were used to further optimize the ZnCP crystals. The results show that ZnCP crystals are well dispersed, and have a large apparent density and regular crystal-morphology under the control of a mixture of reagents A and E in a mass ratio of 1:4 at 80°C.     

基于高分辨率遥感影像的城市建设区提取

以北京市部分区域的QuickBird影像为实验数据,运用面向对象的影像分析手段,研究城市建设区的自动识别和提取方法。在分析城市建设区特征的基础上,采用在低分辨率影像上粗提取,在高分辨率影像上精提取相结合的技术,提高提取精度。经过与目视判读结果的对比,城市建设区的识别率达到89.7%,误判率为27.6%。