Space Communications

THE INTELSAT GLOBAL SATELLITE SYSTEM edited by Joel Alper and Joseph N. Pelton (American Institute of Aeronautices and Astronautics, Inc., 1633 Broadway, New York 10019---$45.00)

SPACE, EARTH, AND COMMUNICATION by Edward Ploman (Westport, Conn.: Quorum Books/-Greenwood Press, 1984---$27.50)     

Analysis of broadcast literature: Broadcast Journalism in “education on the air” 1930–1953

During the past six years the Journal of Broadcasting has brought to its readers bibliographies on specific topics (audience measurement techniques, content analysis, etc.) and from publications devoted to a specific field (law, economics, journalism, etc.). The bibliography published below belongs to this second category. Education on the Air, the yearbook of the Institute for Education by Radio‐Television, is a continuous record of the deliberations of a convention devoted to exploring the informative and cultural uses of broadcasting. Under the direction of I. Keith Tyler, the IERT was for many years the only major association devoted exclusively to this subject area, and many of the present organizations now in the field are “spin‐offs” from these annual meetings hosted by the Ohio State University. Within the framework of the IERT, the subject of broadcast journalism has not been neglected. Over a period of almost 30 years, this use of radio for informing the public of the events of the day was discussed in various IERT sessions.

This bibliography was prepared to assist researchers and students interested in the growth and development of broadcast journalism as reflected in the IERT annual meetings. Dr. Heath is professor of journalism at Oklahoma State University, and is former chairman of the Council on Radio‐Television Journalism of the Association for Education in Journalism. Mr. Wolfson is working toward his doctorate at Michigan State University. They collaborated on this bibliography while at Iowa State University.     

Segregation,integration, inclusion—the ideology and reality in Finland

In this paper, we try to examine the classical sociological points of special education, especially the organizational form of special education, social background of students and the minority status of students. The material of the study was collected mostly during 2003 from one large city in Finland. This city has more than a 100‐year‐long tradition of organizing special education, and it is also still organized very traditionally, that is mainly in special schools. The oldest functioning special education school was founded in 1901. This form of organization based on special schools is no longer typical in Finland. Over 1000 questionnaires were sent to special education school teachers, and students and their parents, as well as to special needs assistants. The percentage of returned responses was between 70% and 80%. Local material is practically the only way to get information of these critical points because of the Act on the Protection of Privacy and the administrative orientation of state statistics. The results show that boys are strongly over‐represented in special education. Over three out of four of the students in classroom‐based special education are boys. According to our comparison, the children from immigrant families account for less than one out of ten students in general education, but in classroom‐based special education they represent nearly 14%, and in part‐time special education as much as one‐quarter (25%). The form of education differs also in regard to the social class of the parents. The parents have been divided into upper, middle and lower social classes according to their occupation. The proportion of upper‐class parents of the student group in general education (42%) is doubled when compared to the parents of both special education groups. The majority of the parents of severe disabled students support the idea of special education schools, but the majority of the parents from the other special education groups are in favour of education in the nearest school.     

The Finnish Model of Special Education: a mixture of integration and segregation

Abstract

This article examines the development of special education in the Finnish compulsory education system in the 1980s. The main emphasis is on evaluating the extent to which the aim of integrating special education has been achieved. Special education is also evaluated in relation to school level and gender. The main result of this examination is that the aim of integrating special education has only partially been achieved. Integration has been achieved in the sense that part‐time special education is the major form of education. Nevertheless, the amount of pupils involved in traditional types of special education has also continued to increase substantially in the 1980s. Two out of three pupils in special education are still boys, but the proportion of girls has clearly grown in SMA teaching.     

Classroom management and teachers’ coping strategies: Inside classrooms in Australia, China and Israel

This paper discusses the degree to which recently reported relationships between the classroom management techniques and coping styles of Australian teachers apply in two other national settings: China and Israel. Little is known about which teacher characteristics relate to their approach to classroom management, although researchers in Australia have recently found that teachers’ coping styles appear to predict the management techniques they utilize in classrooms. In this study, 772 teachers from a range of schools in Australia, China, and Israel completed questionnaires asking how frequently they use six classroom management techniques—hinting, discussion, involvement, recognition and reward, punishment, and aggression—and how often they use a range of coping behaviours. The analysis showed that some of the Australian findings were replicated only in Israel and others only in China, revealing national variations in the links between management techniques and coping styles, which have wider implications for investigations in this area. The implications of these findings are discussed, as are their potential ramifications for future research.     

Career Academies: Effective Structures to Promote College and Career Readiness

Career academies promote smaller learning communities within high schools, creating personalized learning environments while promoting students’ readiness for college and careers. After describing the career academy structure, we present four research-based aspects that can assist school leaders and teachers in developing and implementing academies. We include practical examples from the Metro Nashville Public Schools, noting how educators have collaborated with civic agencies, businesses, and postsecondary partners to increase the graduation rate and improve student learning outcomes. Career academies can be effective in preparing students for college and careers, while also providing economic benefits to the community.     

核心稳定性在人体运动中的作用

在体育运动中,核心的主要作用是稳定身体、是肌肉发力的基础,这一点日益得到公认。从跑步到投掷等各项体育运动中,稳定的核心是有效发挥人体生物力学功能的关键因素,从而使肌肉发力最大化并最大限度减小关节负荷。我们将核心肌群的功能理解为中枢神经系统预设的程序,这个程序整合局部的、单关节和多个关节上的肌群活动,在保持整体稳定的同时完成体育动作。近端的稳定性是远端灵活性的基础,在这个基础上可以建立从近端向远端的发力模式,并且可以通过肌群的协同作用力在完成远端动作的同时保护远端关节。评估动态核心能力是一项重要任务,其中包括对躯干特定功能和三维运动能力的评估。运动康复训练计划应该包括核心能力的重建,并且应该将核心视为远端肢体运动的基础。     

Close to you? Bias and precision in patent-based measures of technological proximity

Patent data have been widely used in research to characterize firms’ locations in technological or knowledge space, as well as the proximities among firms. Researchers have measured firms’ technological or knowledge proximities with a variety of measures based on patent data, including Euclidean distances (using the technological classifications listed on patents), and overlap in cited patents. Often research has employed only the first listed patent classification in measures of proximities. We explore the effects of using the first listed patent class as well as other methods to measure proximities. We point out that measures of proximity based on small numbers of patents are imprecisely measured random variables. Measures computed on samples with few patents or a single patent class generate both biased and imprecise measures of proximity. We discuss the implications of this for typical research questions employing measures of proximity, and explore the effects of larger sample sizes and coarser patent class breakdowns in mitigating these problems. Where possible, we suggest that researchers increase their sample sizes by aggregating years or using all of the listed patent classes on a patent, rather than just the first.     

How Experiments Begin: The Formation of Scientific Collaborations

Multi-organizational collaborations are increasingly important incontemporary science, but their formative processes have beenneglected by scholars in the social studies of science. Based onan examination of 53 collaborations in physics and relateddisciplines, we have found five types of formations.Collaborations that encountered greater difficulties in formingbecame more formal in their organization and management.