基于事件分析法的国家创新政策对高新技术产业的影响分析

选取在深圳中小板上市的高新技术企业为样本,运用事件分析法分析了我国2006年以来创新政策中的税收优惠政策的颁布对公司市场价值的影响。与考察单个事件影响原理不同,此次研究的税收优惠政策为＂间断发生的同类事件＂,故通过对该类事件发生作用的事件窗口内的＂异常波动＂来衡量事件的影响作用。实证研究结果表明：税收优惠政策的颁布给深圳中小板上市的高新技术企业市场价值带来了正向影响。此外,以传统的石化产业和新兴的生物医药产业为例,研究创新政策对不同产业公司的影响差异。结果表明：税收优惠政策的颁布对不同产业的平均超常收益率和累积平均超常收益率影响趋势基本相同,均呈现出增长趋势;但相比而言,对新兴的高新技术产业影响更为显著。     

一类整群环的K1群的计算

着重讨论整群环的K1群的计算,问题的关键点在于其对应的SK1群的计算,其中,p群的整群环的SK1群的结果是已知的.讨论了计算SK1群的基本理论,并证明了一类特殊的非p群(p1q1阶群)的整群环的SK1群是平凡的.     

The Electronic Cataloging in Publication Cataloging Partnership Program: A Model for Cooperative Cataloging for the Twenty-First Century

The Library of Congress’ Cataloging in Publication (CIP) Program has been in existence for forty years. During this time, the CIP Program has moved from a model where the Library of Congress created all pre-publication metadata for publishers to a partnership where other libraries share in the creation of metadata. This article documents the evolution of the Electronic Cataloging in Publication (ECIP) Cataloging Partnership Program. The ECIP Cataloging Partnership Program can be used as a model to leverage limited resources across libraries to the benefit of library users nationwide.     

Identity tensions in lesbian intercollegiate coaches

Using social identity perspective, we investigated the experiences of 13 lesbian college coaches. Through semistructured interviews, the coaches revealed the daily identity tensions they experienced. There was constant negotiation between their social identities of "coach" and "lesbian." The social context of intercollegiate women's athletics created a complex web that juxtaposed these identities against commanding social norms. The challenges these coaches faced ranged from doing what they believed was best for the well being of their athletes (e.g., fighting homonegativism) versus what was best for their professional well being (e.g., remaining silent). These coaches did not passively accept their fate; while they struggled with identity negotiation, they also found ways to counter the heterosexist atmosphere and create positive social change.     

Associations between Parental Psychological and Behavioral Control and Youth Internalized and Externalized Behaviors

In this study, psychological control of children was conceptually and empirically distinguished from behavioral control. Further, it was demonstrated as hypothesized that psychological control was more predictive of adolescent internalized problems, and that behavioral control was more predictive of externalized problems. Subjects were 473 fifth-, eighth-, and tenth-grade males and females from a Southern suburb. Control was measured by the Child Report of Parent Behavior Inventory and the Colorado Self-Report of Family Functioning Inventory. Problem behaviors were measured with the Child Behavior Checklist. First- and second-order factor analyses discriminated psychological and behavioral control, and structural equation analyses demonstrated the differential prediction of internalized and externalized problems. These last analyses were conducted using youth-reported data and validated using a subsample of 227 mother-youth pairs.     

Conditioned inhibition of rotation-induced taste aversion

In three experiments, we investigated the existence of conditioned inhibition of body rotation-induced taste aversion. Rats were given conditioned inhibition training in which the taste of saccharin was always followed by rotations, but the taste of vanilla was not. Flavor-preference tests, retardation-of-acquisition tests, and summation tests of inhibition indicated that the vanilla stimulus had acquired conditioned inhibitory properties. These findings could not be interpreted as functions of either initial solution preferences or simple nonassociative effects of flavor preexposure. They lend support to a theory that views learning mechanisms as being central to the phenomenon of motion sickness, and suggest that inhibitors might be effectively employed to ameliorate its symptoms.     

高职机电一体化专业实训基地建设探讨

当今世界电子技术迅速发展，不断推动着高职教育机电一体化专业的革新，本在高职教育大发展的情况下，对该专业的特点及培养目标、高职教育机电一体化专业实训基地的功能与特点以及实训基地建设所应达到的功效作了深刻阐释，提出实训基地要具有技能培训、教学科研、企业主体的职能，要在高职机电一体化专业的发展和建设中发挥首要作用。