Develops a pair of equations for calculating the elevation and azimuth angles for the various satellites. Uses 3-dimensional vector difference calculations. Provides a practical example, figures, and table. (YP)

Traces the history of soil mechanical analysis. Evaluates this history in order to place current concepts in perspective, from both a research and teaching viewpoint. Alternatives to traditional separation techniques for use in soils teaching laboratories are discussed. (TW)

Discusses one mechanism proposed for the two-step initiation/promotion scenario of the development of cancer called oncogenes and a possible alternate mechanism that may prevent tumors from developing. Uses the example of retinoblastoma to illustrate the mechanisms. States that these mechanisms may not be caused by the activation of oncogenes. (CW)

Describes some recent initiatives and developments in the computer-aided design program in the engineering faculty of the Katholieke Universiteit Leuven (Belgium). Provides a survey of the engineering curriculum, the computer facilities, and the main software packages available. (TW)

Confronts the problems of defining the European Engineer in terms of educational and practical training. Analyzes the supply and demand requirements of engineering management and practice. Compares these analyses with conditions in the United States. Gives details of the educational process in a number of European countries. (CW)

The effect of manipulation of the perceptual field factors on undergraduate student performance in proportional reasoning tasks was investigated. Evidence was found to support the hypothesis that the manipulation of the perceptual field factor can affect student performance. Reports data correlated with the Group Embedded-Figures Test. (CW)

Describes the diversity of plants. Outlines novel developmental and complex genetic processes that are specific to plants. Identifies approaches that can be used to solve problems in plant biology. Cites the advantages of using higher plants for experimental systems. (RT)

Lists alphabetically the definitions of key organic-based terms used in characterizing the structure of polymers. Includes several common polymers, some of their uses and their respective structures. (CW)

Discusses the symbiotic relationship of cosmology and elementary-particle physics. Presents a brief overview of particle physics. Explains how cosmological considerations set limits on the number of types of elementary particles. (RT)

The number of women faculty members in engineering correlates directly with the number of women who pursue careers in this field. Proposed are ways to break the cycle of too few role models producing another generation of too few women engineers. (CW)

Reviewed is the status of minority graduate students in engineering. Discussed are graduate participation, institutional barriers, a national agenda and commitment to minority success in engineering. A list of suggestions to improve minority recruitment and retention and statistical information are included. (CW)

Discusses methods that can be used to encourage students to use chemical principles to evaluate claims made in advertising. Considers weight loss diets, structure and properties, and reproducibility of evidence. (CW)

Advocates the teaching of quantum chemical ideas to undergraduates. Discusses the total failure of the electronegativity approach and comparison with other theoretical approaches. (CW)

Describes a simple method to teach molecular geometry using styrofoam balls and velcro strips. Discusses the construction and a procedure for using the model for teaching. (CW)

Provides an introduction to and summaries of the manufacturing methods and uses of chemicals 51-75 on the list of chemicals arranged in order of decreasing production in the United States. Gives production in pounds, annual growth, average price per pound, and organization according to the seven basic organic chemicals. (CW)