走近"习性"、"资本"和"场"--读《布尔迪厄访谈录》

布尔迪厄以访谈的形式,阐述了在他的理论体系中起核心组织作用的三个概念"习性"、"资本"和"场".习性是一个构筑在实践层面上的后天获得的性情系统,是在实践中形成的即兴创作的能力.资本是以同一的形式和扩大的形式获取利润的潜在能力,它实质上是权力的一种形式.场涉及的是对人们的关系、地位的分析,对行动者占据的位置的多维空间的阐述;每个场都是斗争的场所.     

可重构装配线多agent系统中的本体研究

提供多agent制造平台agent之间通讯所需的机器可理解的通讯内容语言，是构建多agent制造平台的重要内容。分析与总结出可重构装配线多agent平台对其本体模型存在提供装配制造知识及支持重构过程两方面需求，并因此将本体模型划分为通用本体与重构本体两部分．以某汽车变速器可重构装配生产线为背景，研究该环境下的具体本体建模技术。在设计了描述装配线制造知识与制造机理的通用本体基础上，通过分析可重构装配线多agent平台的重构机理，定义了由具有装配行为特征的重构动作原语组成的重构本体．构建的本体模型已应用于重构装配线多agent平台的开发。     

基于语义Web的知识管理系统的研究

知识管理是现代企业关注的热点,随着知识经济时代的来临,企业将主要通过知识而不是金融资本或自然资源来获取竞争优势.但是由于传统的知识管理系统都是通过关键字匹配来获取知识,这个会造成获取信息的不准确.本文将从知识管理的需求分析出发,给出了一种新的基于语义Web的知识管理系统的体系结构,并进行阐述.     

新型两性离子聚合物FA369钻井液在樊学油田的应用

介绍了樊学油田地质概况,论述了新型两性离子聚合物FA369钻井液的配方及优点,提出了现场维护要点。     

Scanning for sisnatures of geosraphically restricted selection based on population genomics analysis

Natural selection, as the driving force of human evolution, has direct impact on population differentiation. However, it is still unclear to what extent the genetic differentiation has been caused by natural selection. To explore this question, we performed a genome-wide scan with single nucleotide polymorphism （SNP） data from the International HapMap Project. Single locus FsTanalysis was applied to assess the frequency difference among populations in autosomes. Based on the empirical distribution of FsT, we identified 12669 SNPs correlating to population differentiation and 1853 candidate genes subjected to geographic restricted natural selection. Further interpretation of gene ontogeny revealed 121 categories of biological process with the enrichments of candidate genes. Our results suggest that natural selection may play an important role in human population differentiation. In addition, our analysis provides new clues as well as research methods for our understanding of population differentiation and natural selection.     

甘谷驿油田长6油层储层成岩作用及其对储层物性的影响

甘谷驿油田长6油层为湖泊三角洲平原分流河道砂体及三角洲前缘水下分流河道、河口坝砂体．砂岩以中细粒长石砂岩为主，主要成岩矿物有绿泥石环边、方解石胶结物、长石和石英加大生长、伊利石、伊一蒙混层、钠长石和高岭石等．在成岩过程中，强烈的压实作用及胶结作用导致原生孔隙丧失殆尽，是储层成为特低渗透率的主要原因；而晚期的溶蚀作用，特别是方解石、浊沸石的溶解，使得储层的孔隙度和渗透率有所改善，这才使得鄂尔多斯盆地长6层发育部分“甜点”储层，成为有利的储集相带．     

一种新的保留语义的P2P系统索引构造方法

提出了一种新的P2P系统索引构建方法.它使用多个简单本体(ontology),对同一资源进行描述,将各个ontology描述转化为相应的本体序号(ontology ID),然后使用Hilbert空间填充曲线,实现从多维ontology ID到一维索引值的映射,得到保留了语义的索引值.根据这个索引值,在Chord等结构化P2P上发布和查找资源.该方法对资源的描述更加准确、简单,资源的发布和查询也更加灵活和高效.     

从“A像B一样C”式比喻的语义搭配看比喻的构成

在“A像B一样C”式比喻性短语作状语的句子中，C与A、B之间的语义搭配呈现出纷繁复杂的情况。C与A、B之间既可以都构成正常搭配，也可以只与其中一个构成正常搭配，而与另外一个形成超常规搭配。与此相对应，比喻句中本体、喻体的构成也并不完全一致。本文运用认知语言学及转换生成语言理论，结合比喻句中的语义搭配来分析比喻中本体的位置及比喻的不同作用。在划分比喻本体和喻体时，要注意其形象的完整性，要和全句的语义搭配关系、语法结构关系结合起来进行分析。划分的方法和标准也应具体句子具体分析，不可一概而论。     

The natural history of the parasitic wasp Trogus pennator (Hymenoptera: Ichneumonidae): Host‐finding behaviour and a possible host countermeasure

The parasitic wasp Trogus pennator (Ichneumonidae) attacks the larvae of swallowtail butterflies (Papilionidae). Female T. pennator were followed in the field as they searched for larvae of the zebra swallowtail butterfly, Eurytides marcellus (Papilionidae), feeding on Asimina (Annonaceae) in central Florida, USA. Predictions of host‐finding theory and interactions with the host were thus investigated in a natural setting. Wasps seldom flew to plants other than Asimina and apparently recognized the plants by visual cues. Plants were attractive regardless of host presence, as the wasps approached plants lacking E. marcellus feeding damage twice as often as they approached damaged plants. However, wasps approached damaged plants at a rate greater than their frequency in the Asimina population, indicating that they can detect host damage before they approach the plants. After approaching within 0.5?m of plants, wasps tended not to land on plants lacking feeding damage. A comparison of the plants they landed on, however, showed no consistent preferences for damaged plants. The weaker trends in the latter data indicate that the presence of feeding damage was not the sole criterion for landing, although it evidently influenced behaviour. After landing, wasps spent more time searching damaged plants than undamaged plants. Butterflies preferred to oviposit on plants shorter than those searched by T. pennator. Possible adaptive consequences of this phenomenon are discussed.     

FPGA在图象处理中的应用

介绍了FPGA的硬件结构和特性 ,以及采用现场可编程器件FPGA设计图象处理板的原理和设计方法 ,给出了实现图象左右翻转的应用实例。实践证明这种方法速度快 ,编程简单 ,设备具有很高的性能价格比。