Discusses the growth, development, and unusual parasitic nature of the retrovirus community. Reviews these infectious cancer-causing agents as models for the study of fundamental biological problems, tools for genetic manipulations, and problems posed by their pathogenic potential in humans and animal hosts where they cause diseases such as…

Describes a laboratory experiment designed for use in a freshman chemistry course. Considers the use of a set of known "training reactions" with a "training set" of solutions. (CW)

Presents an adaptation of "Euler's Circles" as a metacognitive tool for learning. Provides background about diagraming and learning theory. Details concept circle diagrams and considers their relationship to Ausubelian learning theory. Gives examples of the use of concept circles and rules for concept circle construction. (CW)

Reviews trends in the population of engineering students since 1975. Discusses fixed and flexible elements of the college-age population. Describes the current situation of women and minorities in engineering education. Compares freshmen and graduate data. Considers the possible future effects of current trends on American universities. (CW)

Discusses the trends in baccalaureate and doctoral degrees in engineering in the 1986-87 academic year. Lists states and schools awarding the largest number of engineering degrees; degrees by curriculum and type of recipient; engineering degrees by school and degree level; and engineering technology degrees by school and degree level. (CW)

Describes a deterministic computer model that incorporates: (1) initial framework composition; (2) abrasion factors for quartz, feldspar, and rock fragments; and (3) a fragmentation ratio for rock fragments to simulate the recycling of coastal sands by rivers and beaches. (TW)

Reviews three softwre packages: "Molecular Graphics on the Apple Microcomputer, Enhanced Version 2.0"; "Molecular Graphics on the IBM PC Microcomputer"; and "Molecular Animator, IBM PC Version." Packages are rated based on ease of use, subject matter content, pedagogic value, and student reaction. (CW)

Presents the results of a survey of engineers in R&D. Reports 1987 pay raises, highest academic degree, salary range, age and experience for 12 engineering fields. Compares these results to other years. Concludes that many variables led to overall gains for metallurgists and biologists and losses for mathematicians and ceramists. (CW)

Discusses the importance of laboratory experiments in which students were given a few guidelines and small groups had to design the experiments. Describes the old and new orders of laboratory projects and the effects of change. (CW)

Expresses concern over recent actions by coalitions of neighborhood activists and animal rightists in the San Francisco area that are seeking to block new biology laboratories. Argues that costly delays and disurption of research could result. (TW)

Describes a simple redox reaction that occurs between potassium permanganate and oxalic acid that can be used to prepare an interesting disappearing ink for demonstrating kinetics for introductory chemistry. Discusses laboratory procedures and factors that influence disappearance times. (CW)

Examines various types of problems that researchers have used to demonstrate problem solving. Focuses on genetics problems. Discusses classes of learning outcomes, conceptual knowledge gains, content-independent heuristics, content-specific procedures, understanding the nature of science and a typology of genetics problems. (CW)

This description of microcomputer-based laboratories (MBL) for science focuses on experiments with a motion detector by non-science majors at Tufts University. Exercises had been used previously with sixth grade middle school students, indicting the effectiveness of MBL for students with a wide range of abilities. (Author/LRW)

Addresses the history and philosophy of accident prevention in chemistry laboratories. Presents the results of a statewide survey done in Colorado designed to investigate the etiology of academic chemistry laboratory accidents in institutions of higher education. Patterns of accident characteristics identified by the student are discussed. (TW)

Discusses starting salaries for graduates with various degrees in computer science and electrical engineering. Summarizes the results of a recent study by the Institute of Electrical and Electronics Engineers (IEEE) which provides salary estimates for graduates in different specialties and in different geographical locations. (TW)