Active X技术用于开发流媒体Web页

介绍了Active X技术,探讨了在C++环境下创建Active X控件的方法,并以播放流媒体WindowsMedia Video为例说明了在Web中的应用。在教育部资助的网络多媒体项目开发过程中使用了多媒体Active X控件,使Internet应用程序更具有诱人的多媒体功能。     

网络传感器在机器人感知系统中的应用研究

本文针对网络环境下机器人感知系统信息获取技术，结合IEEE1451.2网络传感器设计 思想，提出一种即插即用机器人感知系统节点的设计方法，并针对具体感知节点提出一种在 线编程的方法，即可在线修改感知系统节点中具体的传感器／执行器的有关参数，如：生产 厂家、日期、校准参数等；并给出了网络环境下机器人感知系统的网络拓扑结构以及数字接 口．     

通用即插即用(UPnP)体系架构在可靠性方面的改进与实现

对目前较新颖的开放标准,通用即插即用(Universal Plug and Play,UPnP)体系架构进行研究并提出改进可靠性的思路。对通用即 插即用体系的术语、网络协议的交互使用以及工作流程做了研究。提出实际应用中存在的可靠性问题,并给出状态服务器的网络逻辑模型以 维护通用即插即用网络上的设备可用信息。     

异步及不可靠链路环境下的先应式秘密共享

现有先应式秘密共享假设系统具有同步时钟且主机间存在可靠通道,这在现实的分布式环境中很难保证.本文给出了异步且不具可靠通信通道环境中一种先应式秘密共享方案.通过引入由协议事件和系统中主机本地时钟双重驱动的时间片概念,定义了异步模型下先应式秘密共享的运行状态及其转换过程,从而给出了异步环境中先应式秘密共享的有效方案;同时设计了一个消息可靠传输协议,可在主动链路攻击情况下保证主机间消息的正确传输.分析表明,我们的方案是有效的,且不会对系统的通信和计算性能带来太大影响.     

Criticality and Environmental Uncertainty in Step-Level Public Goods Dilemmas.

The author examined a public goods (PG) dilemma with environmental uncertainty in a sequential protocol of play paradigm. Using a 5-person game, Experiment 1 examined provision point (PP) uncertainty and found that a certain PP requiring 3 contributors produced the PG more frequently than an uncertain PP of the same expectation that varied uniformly among 2, 3, and 4 contributors. Fixing PP at 3, Experiment 2 showed that PG provision rate was higher with a certain group size of 5 persons than an uncertain group size of the same expectation that varied uniformly among 4, 5. and 6 persons. Further analyses showed that a fear of wasting one's contribution and pessimistic beliefs of environmental uncertainty could have undermined contribution. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Transactional Model of Parent-Infant Interactions in Alcoholic Families.

This study examined the transactional nature of parent-infant interactions over time among alcoholic and nonalcoholic families. The sample consisted of 222 families assessed at 12, 18, and 24 months of child age. Results indicated that infant behavior did not influence parental behavior across time, but parental behavior was longitudinally predictive of infant behavior during play interactions. Higher paternal alcohol consumption at 12 months was longitudinally predictive of negative parental behavior at 24 months. Other significant risk factors included marital conflict, fathers' depression, and fathers' education. Results highlight the nested nature of risk in alcoholic families and the direction of influence from parent to child during interactions and suggest that 1 pathway to risk among these children is through negative parent-infant interactions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Psychometric Evaluation of the Parent Situation Inventory: A Role-Play Measure of Coping in Parents of Substance-Using Adolescents.

This article reports on the generalizability, reliability, and construct validity of the Parent Situation Inventory (PSI), a role-play measure of coping skills in parents experiencing problems from an adolescent's drug and alcohol use. Generalizability was robust (.80) and alternate form and test-retest reliability were satisfactory. PSI skillfulness was negatively related to the parent's own substance use and to the adolescent's alcohol use. The PSI shows promise as a reliable and potentially valid measure of coping in this population and has direct implications for developing and evaluating skill-based parent training programs. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Faculty Begin to Replace Textbooks with “Freely” Accessible Online Resources

ABSTRACT

More and more students are financially unable to acquire, or deliberately choose to go without course textbooks. A variety of commercial and noncommercial initiatives have materialized to address the student success challenge of learning material access inequality in the classroom. There is a gap between how higher education faculty plan to teach a course and the actual learning environment that exists in practice. Faculty are beginning to experiment with freely available and licensed library materials as a substitute for commercial textbooks and course packages to address the failure of textbook publishers to reach a price point that entices students to buy textbooks. The results thus far are promising. Some courses can be delivered today using only “freely available” learning resources, some using a mix of fee based and free, while others cannot be delivered using any freely available resources at all due to a lack of availability.