Ethical Problems in Evaluation Research

For some time, social scientists have been concerned with ethics in research. Much of what they have written has focused on research in general, but many of the points they raise are applicable to evaluation research in particular. Included among these concerns are informed consent, the right to treatment, the right to refuse treatment, implicit coercion, powerlessness of subjects, and, perhaps most important, external access to confidential data

Constant-frequency, variable-duty-cycle multivibrator

Circuit provides a pulse source of constant frequency with a duty cycle that is adjustable by an external input signal. It could serve as a switching mode voltage regulator or as a switching source for control systems

Two generic transfers and a synonymy for some North American Elateridae (Coleoptera)

During various studies, three instances of necessary taxonomic change were found. These changes are provided here to clarify the taxonomy of these taxa for those studies

Making It to the Major Leagues: Career Movement between Library and Archival Professions and from Small College to Large University Libraries

published or submitted for publicatio

Parallizable manifolds and the fundamental group

ntroduction. Low-dimensional topology is dominated by the fundamental group. However, since every finitely presented group is the fundamental group of some closed 4-manifold, it is often stated that the effective influence of π1 ends in dimension three. This is not quite true, however, and there are some interesting border disputes. In this paper, we show that, by imposing the extra condition of parallelizability on the tangent bundle, the dominion of π1 is extended by an extra dimension

Mechanical actuator Patent

Mechanical actuator wherein linear motion changes to rotational motio

Comparison of individual and paired learning for the measurement of retention

Thesis (Ed.M.)--Boston UniversityThe purpose of this study was to measure and compare retention between children working alone and with a partner using S.R.A. (Scientific Research Associates) reading materials. The S.R.A. laboratory is a series of graded reading experiences intended to be used by individual children working alone and at their own rate of speed. Its general purpose is to improve many reading skills but in this study the retention factor will be the only concern