Researchers who study the fossil record are seeking to determine whether the impact made by a comet or meteor really did decimate up to half of the life on this planet at the end of the Cretaceous period. Questions whether the extinction of plant and animal life was abrupt, started before the impact, or was a gradual change. (KR)

The absence of a central database and use of specialized language hinder nonexperts in becoming familiar with the science teaching and learning literature and using it to inform their work. The challenge of locating articles related to a specific question or problem, coupled with the difficulty of comprehending findings based on a variety of…

"Research and Educational Leadership" is the first book to directly address the implications of the National Research Council's (NRC's) "Scientific Research in Education" (2002) in the fields of educational leadership and school administration. This text points out the strengths and weaknesses of the NRC's recommendations and…

This discussion of the place of research in the field of library science notes empirical and scientific research; testing, analysis, and research design; theories and methodologies from other disciplines; the dilemma of quantification; library research needs; and the search for an audience. Twenty-six references are cited. (EJS)

Describes the characteristics of rare earth elements. Details the physical chemistry of rare earths. Reviews the history of rare earth chemistry and mineralogy. Discusses the mineralogy and crystallography of the formation of rare earth laden minerals found in the earth's crust. Characterizes the geologic history of rare earth elements. (CW)

Describes subjective-contour illusions and gives explanations for perception of shape and brightness in these figures. Supports cognitive mechanisms rather than psychological mechanisms. Gives examples of subjective-contour illusions and summarizes explanations of other psychologists with regard to this topic. (CW)

This paper explores how Fourier Transform (FT) mimics spectral transformation, how this property can be exploited to advantage in spectroscopy, and how the FT can be used in data treatment. A table displays a number of important FT serial/spectral pairs related by Fourier Transformations. A bibliography and listing of computer software related to…

A method for assessing scientific performance based on relationships displayed numerically in published documents is proposed and illustrated using published documents in pediatric oncology for the period 1979-1982. Contributions of a major clinical investigations group, the Childrens Cancer Study Group, are analyzed. Twenty-nine references are…

Discusses the link between astronomical information and the ice ages. Explains the use of isotope measurement data from the sea-floor sediments, glacial ice, and water. (YP)

Discusses the biochemical mechanisms related to photosynthesis. Describes a water-oxidizing clock generating a molecule of oxygen with every four ticks. Lists four references. (YP)

Discusses the physical basis and current understanding of hydrophobic effects. The thermodynamic background of the effects, hydrophobic hydration, and hydrophobic interactions are described. Four existing controversies are outlined. (YP)

The role of editors and peer reviewers in detecting and sanctioning scientific misconduct is analyzed, structural problems inherent in the process are examined, and best means of enabling peer and editorial roles in correction of misconduct are discussed. It is argued that the review process plays a limited corrective role. (MSE)

Describes a satisfactory junction that can be easily fabricated. Discusses the specifications and applications of the junction. States that this junction is especially useful for microcells. (CW)

Administrative scientists superimpose analytic frameworks on their observations when trying to make knowledge meaningful. The generation of knowledge should be seen as an essentially interpretive and subjective activity. An awareness of this fact may encourage a view of scientific progress that is reinforced by the social context in which research…

Discusses the role of dogs in research, considering their use in studies related to: behavior; aging; anesthesia; gastrointestinal surgery; the brain; organ transplants; radiobiology; trauma and shock; arterial diseases; hemophelia; ophthalmology; diabetes; nutrition; cancer; lupus; cyclic neutropenia; thyroiditis; hepatitis; skeletal system,…