A digital control system for high level acoustic noise generation

As part of the modernization of the Acoustic Test Facility at Lockheed Missiles and Space Company, Sunnyvale, a digital acoustic control system was designed and built. The requirements imposed by Lockheed on the control system and the degree to which those requirements were met are discussed. Acceptance test results as well as some of the features of the digital control system not found in traditional manual control systems are discussed

A Proposed Junior High School for the Ankeny Community School District

63 leave

Rape myth acceptance, hypermasculinity, and demographic characteristics as correlates of moral development: Understanding sexually aggressive attitudes in first year college men

Male perpetrated sexual aggression has long been recognized as a serious problem on college campuses. The purpose of this Multiple Regression Correlation research design study was to assess the relationship between levels of moral development (measured by the Defining Issues Test) and the degree to which first year college men (N = 161) ascribed to rape supportive attitudes. Rape supportive attitudes, for the purposes of this study, included assessed levels of rape myth endorsements (measured by the Illinois Rape Myth Acceptance Scale [IRMA]) and hypermasculinity (measured by the Hypermasculinity Inventory). Respondents completed three research instruments and a demographic questionnaire prior to the beginning of the fall semester. Analysis of whether there was a significant relationship between (a) levels of rape myth endorsements and moral development, (b) hypermasculinity and moral development, and (c) the extent that rape myths, hypermasculinity, and SAT verbal/quantitative scores predicted moral development levels was conducted. Pearson correlations indicated that there was a significant (p \u3c .01) relationship between rape myth acceptance and moral development. There was not a significant (p = .241) relationship between hypermasculinity and moral development. Stepwise multiple regression analysis indicated that rape myths and SAT verbal scores accounted for 9% of moral development variance. Additional stepwise analysis suggested that the IRMA subscale, It wasn\u27t really rape, in combination with SAT verbal scores, accounted for approximately 10% of moral development variance. Exploratory analysis on demographic characteristics was also conducted. Implications for practitioners and research suggestions are provided

Thermal runaway in power transistors

Considerable work has been done on the theory of thermal runaway and the relationship between transistor junction temperature and collector power dissipation. The first part of this thesis is a review of literature. An equation for the normalized junction temperature and its peak value is developed. From this equation, the junction temperature at the thermal runaway point for a given maximum power dissipation could be determined. The second part of this thesis is experimental. The author examined the thermal runaway points for eight different transistors in the basic common emitter class A circuit which operated under no signal DC conditions --Abstract, page iii

The scattering of elastic waves by void cavities

Elastodynamic multipole theory, the theory of least squares, and the theory of integral representation of solutions are employed in solving certain problems involving an elastic solid containing a source and a scatterer. Both the source and scatterer are of finite geometrical extent; they occupy non-intersecting regions. The source is separable, i.e., its mathematical specification consists of an arbitrary vector function of position multiplied by a time function, which is further assumed to be a sinusoid. The scatterer emphasized is a finite void cavity of arbitrary shape; however, scatterers composed of rigid material may also be treated. The calculation of a Green\u27s Function is emphasized; in this case the fields incident upon the scatterer are dipole fields. However, the method presented is amenable to arbitrary specification of the incident field; plane wave scattering is discussed as an example. While scattering from a single object is emphasized, the case where two or more scatterers exist is discussed briefly. The so-called cavity-source problem is also discussed briefly. In all cases, a first approximation to the solution in the form of a linear combination of multipole fields is derived using least squares. An improvement in this approximation is derived using an integral representation of the exact solution. The second and final approximation is in the form of a multipole series in which the terms are the fields of fundamental force systems, i.e., dipoles, quadrupoles, etc --Abstract, page ii