Influence of properties of layered silicate minerals on adsorbed DNA surface affinity,self-assembly and nanopatterning

We report on the specific interaction between DNA and some mica-family minerals and other layered silicate structures. The interaction depends on mineral surface's crystallography, chemistry and potential. These properties are responsible for a remarkable variety of adsorption mechanisms and can be used to modulate surface self-assembly and nanopatterning of DNA. The controlled deposition of DNA onto non-conductive mineral regions with atomically flat boundaries has very attractive applications in nano-biotechnology (for example, microelectronics, microarrays and sensors). In addition, the extreme affinity discovered for some mineral surfaces, together with their ability to organize the DNA molecules, could be an indication of their catalytic potential. It may also have had relevance in the prebiotic environment, with important implications for the earth and life sciences.     

Health beliefs and breast examination behaviors: Analyses of linear structural relations

Abstract

A survey of 619 Detroit-area women was conducted in order to understand why women do or do not perform breast self-examination and obtain or not obtain professional breast examinations. The survey assessed these behaviors and women's beliefs about (a) their susceptibility to breast cancer, (b) the seventy or seriousness of breast cancer, (c) the benefits of breast examinations and (d) the costs or disadvantages of the examinations. Separate sets of questions measured seventy of breast cancer when it is treated (a) late (seventy-late) and (b) promptly (seventy-early). Predictions were derived by combining the health belief model with the theory of subjective expected utility. Path analysis supported most predictions of the combined theory. As predicted, high severity-late increased perceived benefit, high seventy-early decreased benefit, and perceived benefit mediated the effects of seventy on behavior. Implications for understanding health decisions, measuring health beliefs, and modifying health behaviors are discussed.     

Comparing the effects of two correction procedures on human acquisition of sequential behavior patterns

Thirty-one college undergraduates learned to touch abstract stimuli on a computer screen in arbitrarily designated “correct” sequential orders. Four sets of seven stimuli were used; the stimuli were arrayed horizontally on the screen in random sequences. A correct response (i.e., touching first the stimulus designated as first) resulted in that stimulus appearing near the top of the screen in its correct sequential position (left to right), and remaining there until the end of the trial. Incorrect responses (i.e., touching a stimulus out of sequence) terminated the trial. New trials displayed either the same sequence as the one on which an error had occurred (same-order correction procedure), or a new random sequence (new-order correction procedure). Whenever all responses occurred in the correct sequence, the next trial displayed a new random sequence. Each phase ended when five consecutive correct response sequences occurred. Initially, the same-order correction procedure increased control by the position as well as by the shape of the stimuli; also, it produced more errors, more total trials, more trials to mastery, and more individual patterns of reacquisition than were produced by the new-order procedure.     

医疗质量模糊性特征研究

探讨医疗质量的特性,通过系统经验分析法,认为医疗质量具有模糊性特征,难以辨别优劣,导致卫生行政部门、医疗机构忽视提高医疗质量。行政部门应加强医疗技术管理,推行医院法人治理结构制度,做好信息公示。医疗机构也应加强服务过程管理,培养医护人员人文精神,落实规章制度,推行临床路径管理,减少医疗差错,加强医院感染管理,医护人员也应加强责任心,多方努力才有可能提高医疗质量、保障患者安全。     

工作中心度的作用及其与领导行为的关系研究

本研究在理论分析的基础上,探讨了工作中心度对职业生涯规划的作用,并进一步分析了以工作中心度为因变变量(contingent variable)的领导行为的有效性。通过问卷调查法对233位企业员工进行测量。结果发现:工作中心度高的员工对于他们的职业生涯会有更好的规划;应根据员工不同程度的工作中心度采取不同的领导行为,后者有利于员工更好地规划自己的职业生涯。     

Facets of the linear ordering polytope: A unification for the fence family through weighted graphs

The binary choice polytope appeared in the investigation of the binary choice problem formulated by Guilbaud and Block and Marschak. It is nowadays known to be the same as the linear ordering polytope from operations research (as studied by Grötschel, Jünger and Reinelt).The central problem is to find facet-defining linear inequalities for the polytope. Fence inequalities constitute a prominent class of such inequalities (Cohen and Falmagne; Grötschel, Jünger and Reinelt). Two different generalizations exist for this class: the reinforced fence inequalities of Leung and Lee, and independently Suck, and the stability-critical fence inequalities of Koppen. Together with the fence inequalities, these inequalities form the fence family. Building on previous work on the biorder polytope by Christophe, Doignon and Fiorini, we provide a new class of inequalities which unifies all inequalities from the fence family. The proof is based on a projection of polytopes. The new class of facet-defining inequalities is related to a specific class of weighted graphs, whose definition relies on a curious extension of the stability number. We investigate this class of weighted graphs which generalize the stability-critical graphs.     

Semantic re-interpretation and garden path recovery

Participant's eye-movements were recorded while they read locally ambiguous sentences. Evidence for processing difficulty was found when the interpretation of the initially preferred misanalysis clashed with that of the globally correct analysis, demonstrating the persistence of the earlier interpretation. Processing difficulty associated with the syntactic reanalysis was largely localised to the disambiguating region, with difficulty due to semantic persistence occurring later. The results show that semantic persistence is not limited to extreme cases of parse failure, and can occur even when reanalysis is relatively straightforward.     

中国特色社会心理服务体系建设的路径分析

社会心理服务体系作为培育良好社会心态的公共服务体系,有着公共服务体系具有的基本特征：普惠性、公平性和动态性。同时,作为社会治理体系的有机组成部分,这个体系的功能是促进社会治理现代化和科学化,营造和谐的社会心态。中国特色社会心理服务体系建设需要立足我国国情,注重以下方面：党政集中统一领导、针对性的心理服务内容、多元化的心理服务载体、专兼职互补的心理服务队伍、循序渐进的建设重点。