中国著作权制度：英美模式还是大陆模式？

一、引言 1990年9月7日通过的中华人民共和国着作权法,已经两度修改：第次修改稿於2001年月27日通过,最近的第二次修改稿,     

Effect of physiological harvest stages on the composition of bioactive compounds in Cavendish bananas

The combined influence of maturation, ripening, and climate on the profile of bioactive compounds was studied in banana (Musa acuminata, AAA, Cavendish, cv. Grande Naine). Their bioactive compounds were determined by the Folin-Ciocalteu assay and high-performance thin layer chromatographic (HPTLC) method. The polyphenol content of bananas harvested after 400 degree days remained unchanged during ripening, while bananas harvested after 600 and 900 degree days exhibited a significant polyphenol increase. Although dopamine was the polyphenol with the highest concentration in banana peels during the green developmental stage and ripening, its kinetics differed from the total polyphenol profile. Our results showed that this matrix of choice (maturation, ripening, and climate) may allow selection of the banana (M. acuminata, AAA, Cavendish, cv. Grande Naine) status that will produce optimal concentrations of identified compounds with human health relevance.     

Watch Out for Relatives

In pedagogical literature, asynchronous, computer-mediated courses have been promoted as an interactive mode of course delivery. However, few studies have evaluated the effectiveness of different teaching strategies in this medium. In this paper, I describe the development of my asynchronous course and outline the fundamental dilemmas in attempting to achieve interactivity in this medium of course delivery. I discuss issues of pacing the course, grading, monitoring discussions, and incorporating Internet-based material into the course. Each of these considerations should be addressed in future research on asynchronous courses.     

Jogging the Jargon

Abstract

The results of a two-year study indicate that collaborative testing is a valuable pedagogical strategy that can both assess and enhance student learning. After finishing their first attempt at each exam, students were given a second attempt either working collaboratively in small groups or individually with open books and notes. Collaborative testing consistently produced significantly higher test scores. In addition, students' retention of course content is shown to be improved when collaborative testing is used. Concerns about grade inflation are alleviated through the use of proportionally weighted grading.     

Uses of computer‐mediated political communication in the 1992 presidential campaign: A content analysis of the Bush,Clinton and Perot computer lists

This article presents a content analysis of three computer‐mediated communication (CMC) networks used for political discussion during the 1992 Presidential election campaign. Data indicate that the main use of computer networks in the campaign was to assert personal opinions about the candidates, issues, and the election. Other uses were talking about one's own life and experiences, telling others what they should be doing, and posting information for others to read. Significant differences were found between the three campaigns for uses of these computer networks. The Clinton network was used more than the other two for posting information. The Perot network was used more than the others for asserting opinions. This study indicates that voters have specific functions for the use of computer networks as new channels of political communication. Future research should examine what groups of voters use these networks the most and how such use affects candidate image formation. Suggestions are offered for the study of campaign computer lists in the upcoming presidential election of 1996.     

Media Production

Peter Utz' Video User's Handbook (Englewood Cliffs, N.J.: Prentice-Hall, 1980--- $12.95 in paper with a hardback available as well).

Martin Maloney and Paul Max Rubenstein's Writing for the Media (Englewood Cliffs, N.J.: Prentice-Hall, 1980---$14.95).

Betsy P. Graham's Magazine Article Writing: Substance and Style (New York: Holt, Rinehart & Winston, 1980---$10.95, paper)

Michael L. Kleper's How to Build a Basic Typesetting System (1979---$10.00, paper)

Martin L. Gibson's Editing in the Electronic Era (Ames: Iowa State University Press, 1980---$15.50).