用Winsock控件编写客户/服务器通信程序

网络编程日益成为人们编程的一个重要内容.本文介绍了如何使用Winsock控件以及用它编写客户/服务器通信程序的方法.     

TCP/IP协议与网络故障实战

TCP/IP协议是网络中计算机之间通信的“语言”,TCP/IP协议系统的层次结构和数据传输机制,使之成为Internet上最为实用的协议。在诊断网络故障中,清晰地把握此协议,可使网络故障的诊断与排除变得更加简单。     

基于单片机控制的噪声实时监测

外界噪声信号通过传声器转换成音频信号，经过放大和V／F变换输入到单片机进行处理，并转换成相应的DB值通过LED显示，从而实现噪声的实时监测。其实现简单，精确度高，可用于实际进行噪声的实时监测。     

Where have all the students gone? Participation of doctoral students in authentic mathematical activity as a necessary condition for persistence toward the PH.D.

The mathematics community in the U.S. has become concerned about the state of doctoral education, including concerns about high attrition rates and the small numbers of women and students from some racial and ethnic groups. This paper proposes a model of doctoral student persistence and attrition, in which student participation in the life of the department and discipline lead to increased student integration, which is crucial for students' success. Ten faculty members and eighteen graduate students were interviewed about their interests,conceptions, and experiences within mathematics, in a case study of one mathematics department. In this department, students experienced four types of obstacles to their participation: obstacles stemming from the program structure, obstacles to participation in class, obstacles to participating with faculty outside of class, and obstacles stemming from faculty beliefs about teaching and learning. Implications for the retention of mathematics doctoral students are discussed. This revised version was published online in July 2006 with corrections to the Cover Date.     

SiO2负载纳米级SO42-/TiO2固体超强酸的制备及其催化合成乙酸丁酯的研究

制备了SiO2负载纳米级SO4^2-/TiO2固体超强酸，对其催化活性、重复使用效果、失活原因及再生方法进行了研究。     

政府绩效评估中的公众参与问题研究

我国公民可以通过多种方式参与政府的绩效评估,但在在政府绩效评估的过程中受多种因素的擎肘,导致公众的参与意识不强,参与热情不高.本文分析了公众参与中存在的问题,并提出通过确立公民满意度作为政府绩效评估的最高原则和引入电子政务等手段,建立完善的政府绩效评估的公众参与机制.     

Developing a student-led school mental health strategy

Although there is increasing interest in promoting mental health and wellbeing within education, to date, the voices of young people appear to have been almost completely overlooked in the development of school-based mental health practices. This is despite increasing focus on young people’s participation; and the fact that young people may be best positioned to understand the pressures of contemporary society. This paper, co-authored by educational psychologists (EPs), school students and the school vice-principal, documents the development of a student-led mental health initiative within a high-achieving girls’ grammar school, led by students aged 12–18. Following EP input, the students devised a whole-school, student-friendly mental health strategy with the support of the EPs and senior school staff. As the project progressed, it became evident that applying even carefully selected adult mental health models to school contexts might not be appropriate; instead the students advocated for young person-friendly, innovative, contemporary and creative ways of communicating information about mental health, which avoided stigma. The students involved were well-placed to identify environmental stressors and to disseminate their strategy. The authors conclude that mental health planning in schools should encourage greater student participation, show caution over applying adult mental health models and promote greater use of technology or visual resources.     

Development of shared vision: Lessons from a science education community collaborative

This is a qualitative case study of a collaboration among multiple stakeholders in science education who came together in order to create environmental field trips and the surrounding classroom curriculum. The collaboration involves 4 major facets of science education: formal education at the elementary and university levels, informal education, and educational research. The data were collected by means of observation, semi‐structured interviews, and written document review. This study examines how shared vision developed within the collaboration, the roles the participants played in its evolution, and how this process benefited both the collaboration and each individual collaborator. Several factors significantly affected the progress towards a shared vision and a successful collaboration including time, communication, understanding others' perspectives, dedication and ownership, as well as the collaborative environment. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 681–705, 2007     

河北大学后勤集团饮食管理系统的设计与实现

本文阐述了为提高河北大学后勤集团饮食管理的质量所开发的饮食管理系统的设计与实现。