This paper addresses the concept of geological time as used by students who face tasks that demand three types of skills: to locate events in time, to order them according to time calendar, and to manage time intervals. The empirical study consisted of asking high school students as well as technical school students to carry out tasks that…

In 1991, a survey questionnaire concerning undergraduate education in geology was sent to a nationally representative sample of 597 four-year colleges and universities. Of these, 275 had an undergraduate geology department or a department with a geology program, and met the criteria for inclusion in the study. Responses were received from 262 of…

Describes various ways a user can control computer program activity using different menu constructions. Advantages, disadvantages and program design principles for menu design are discussed. A listing for a menu demonstration program is included. (BC)

Presented is an accounting of known numbers of major categories of life, from viruses to mammals. The construction of the census is described. Included are living and nonliving species and genera. (CW)

Nationwide data are provided on the 1987 salaries of members of each of the American Institute of Physics' 10 member societies. Of the approximately 13,600 society members who were mailed a questionnaire, 61% responded. Data are presented by: degree level, type of employer, gender, salaries for PhDs by geographic location, PhD salaries by…

This document provides comparative salary trend data for full-time faculty at 307 public institutions and 490 private colleges and universities based on two surveys, one for the baseline year 1993-94 and the other for the trend year 1996-97. For each of the 27 disciplines, a summary includes a definition of the discipline; information on average…

This document provides comparative salary trend data for full-time faculty at 212 public and 337 private colleges and universities, based on two surveys, one for the baseline year 1992-93 and the other for the "trend" year 1995-96. For each of the 25 disciplines, a summary review provides a definition of the discipline; information on average…

The quality of doctoral-level chemistry (N=145), computer science (N=58), geoscience (N=91), mathematics (N=115), physics (N=123), and statistics/biostatistics (N=64) programs at United States universities was assessed, using 16 measures. These measures focused on variables related to: program size; characteristics of graduates; reputational…