核Fisher判别分析在火山岩岩性识别中的应用

针对火山岩储层岩性识别困难的问题,将核Fisher(KFDA)判别分析方法用于火山岩储层的岩性识别中。在详细介绍核Fisher(KFDA)判别分析方法的理论基础上,选取能够反映火山岩岩性变化的常规测井曲线作为特征变量,从8口取心井中随机选取70%的数据样本点参与核Fisher(KFDA)的模型建立,剩余30%数据样本点作为测试集进行岩性正确率的识别。通过对克拉美丽气田石炭系349块火山岩薄片的数据分析表明,利用核Fisher判别分析方法可以有效实现火山岩岩性的分离,与支持向量机(SVM)、BP神经网络和Fisher(FDA)方法比较,该方法识别准确率高,图形化显示方面直观性强,可作为利用常规测井资料识别火山岩岩性的有效手段。     

薄差层水淹模式分析与定性判别

目前测井系列下薄差水淹层测井解释的符合率很低,远远不能满足油田挖潜需求。从目前测井系列出发,针对主要影响因素,提取多项反映水淹特征的判别指标,通过指标的模式结构分析,提出了简单易行的距离判别方法,明确了影响薄差油层解释符合率的主要因素是测井曲线垂向分辨率低、井眼扩径、钻井液侵入及孔隙度测井误差,实现了水淹级别的定性判断。经取心井高、中、低、未4个水淹级别验证,解释符合率高达79%,较过去提高10%以上,为老区挖潜提供了重要技术支持。     

Fair Housing Policy and the Abandonment of Public Housing Desegregation

In this article I examine the failure of fair housing policy to desegregate public housing in the USA. The article reviews major federal actions toward public housing segregation, as well as broader public housing segregation patterns and trends in the USA. It then draws on a variety of archival sources to present an in-depth case study of public housing segregation and desegregation in Louisville, Kentucky. Unlike previous studies of the subject, this article provides a detailed investigation of the relationship between local public housing tenancy policies and changes in racial occupancy across Louisville's housing projects spanning the last 50 years. The article argues for the importance of research on local-scale policy implementation for our understanding of fair housing policy, and it draws from its investigation of Louisville some conclusions about the inability of fair housing policy in the USA to realize its stated objectives.     

A formal cognitive model of the go/no-go discrimination task: Evaluation and implications.

This article proposes and tests a formal cognitive model for the go/no-go discrimination task. In this task, the performer chooses whether to respond to stimuli and receives rewards for responding to certain stimuli and punishments for responding to others. Three cognitive models were evaluated on the basis of data from a longitudinal study involving 400 adolescents. The results show that a cue-dependent model presupposing that participants can differentiate between cues was the most accurate and parsimonious. This model has 3 parameters denoting the relative impact of rewards and punishments on evaluations, the rate that contingent payoffs are learned, and the consistency between learning and responding. Commission errors were associated with increased attention to rewards; omission errors were associated with increased attention to punishments. Both error types were associated with low choice consistency. The parameters were also shown to have external validity: Attention to rewards was associated with externalizing behavior problems on the Achenbach scale, and choice consistency was associated with low Welsh anxiety. The present model can thus potentially improve the sensitivity of the task to differences between clinical populations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

气体介质钻井条件下测井响应特征与判别方法

气体介质条件下钻井技术是一项新型欠平衡钻井技术，该技术对减小钻进过程中对地层的污染、及时发现低压、低孔低渗油气层非常有效。但是，气体介质钻井时，井内没有钻井液，使得井壁垮塌现象比较严重，井身质量较差，多项测井技术的测井响应受到严重影响，导致气体介质条件下的测井资料质量变差，给储层测井评价增加了许多不确定与不利因素。而另一方面，井筒内的气体介质虽然导致测井资料质量变差，但地层不受常规钻井液侵入污染影响，为部分测井方法凸显气、水层测井响应的差异提供了有利条件。文章以川中川南过渡带区3口井资料为例，分析了气体介质条件与常规钻井液条件下的测井响应特征与差异，且进一步探讨了气体钻井条件下测井资料气水判别方法及其适应性。     

Award for Distinguished Scientific Early Career Contributions to Psychology: Jennifer A. Richeson.

Jennifer A. Richeson, winner of the Award for Distinguished Scientific Early Career Contributions to Psychology, is cited for creative and sophisticated investigations of the psychological and neural underpinnings of prejudice, discrimination, and intergroup relations. Considering the perspectives of both minority and majority group members, Richeson has produced new insights into the psychological dynamics that unfold within the crucible of interracial interactions. Her analysis identifies and synthesizes basic attentional, self-regulatory, and motivational processes critical in shaping the quality and quantity of intergroup contact. In addition to the citation, a biography and selected bibliography of Richeson's work are presented. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Balancing dangers: GLBT experience in a time of anti-GLBT legislation.

In the past few years, 26 states have changed their constitutions to restrict marriage to one man and one woman. There has been little research on the psychological effects of this political process on gay, lesbian, bisexual, and transgender (GLBT) people. In this qualitative project, 13 GLBT people were interviewed about their experience during the process of a constitutional amendment. A grounded theory analysis of these semistructured interviews was conducted. The core category, or central finding, was "GLBT people need to balance the dual dangers of engagement with GLBT advocacy and self-protection through withdrawal." Other findings focused on the experience of living in a context of painful reminders that one is seen as less than human by the government and public, and in which one's life is frequently and publicly misrepresented to advance hostile political campaigns. Social support and a process of self-acceptance helped participants to face their fears of isolation, discrimination, and aggression and to fight for social justice. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

南水北调中线一期工程总干渠配网自动监控系统设计

利用计算机监控技术、微机继电保护技术和光纤通信技术，合理地确定了南水北调中线一期工程监控方案和继电保护方案。工程总调中心设置电力调度监控主站，供电专网的每个中心开关站设置监控子站，专网的每座降压变电站设置监控终端，35kV长距离链式供电线路设置分段光纤纵差保护，并通过光纤双环网通信，构成整个工程的配网自动化和继电保护方案。同时还提出了设计中需要注意的问题，供同行参考。     

国际中心高层建筑超限判别及处理措施

结合国际中心A座办公楼实例,对高层建筑的超限情况进行判别,制定相应的技术、加强措施,并进行弹性时程分析、静力弹塑性分析、推覆过程塑性铰分析,从而进一步完善、优化设计,保证结构设计的可靠性、经济性.     

麻柳场嘉陵江组储层流体性质判别技术

麻柳场构造嘉陵江组地层岩石组成、孔隙结构和流体性质复杂,流体性质判别困难。研究地层的测井响应特征及影响因素,利用深浅双侧向差异难以进行该地层的气、水识别,但可以结合不同流体对中子孔隙度影响的差异来识别气、水层。分别使用中子孔隙度-电阻率、中子孔隙度-声波孔隙度的交会图法来判别嘉陵江纽地层的流体性质,现场应用效果良好。