Four Levels of Sexual Involvement, and Their Association with Dating Patterns, Family Relationships, and Other Related Factors

This study examined four levels of sexual involvement among adolescents. Levels of sexual involvement were (1) adolescents who had experienced sexual intercourse; (2) adolescents who had been involved in petting but had never had intercourse; (3) adolescents who had made out but had never petted or had sexual intercourse; and (4) adolescents who had never made out, petted, or had sexual intercourse. The sample consisted of 308 eleventh graders from a semi-rural area of the state of Utah. Dating patterns, particularly early age at first date, were found to be significantly associated with most levels of sexual involvement. Early age at first date was associated with a high level of sexual involvement, with 90% of the adolescents who dated at age 13 or before having experienced sexual intercourse by their junior year in high school. Having a steady boyfriend or girlfriend was also associated with a higher level of sexual involvement, with 58% of those who reported having a steady dating partner reporting sexual intercourse involvement. Close relationships with family, father, and mother were more predictive of less female involvement in sexual activity than male. Relationship with mother was not significant for adolescent male sexual involvement. Having peers who approved of adolescent sexual involvement was more associated with male than female sexual activity. Higher frequency of church attendance was a strong predictor of less sexual involvement for both genders. More factors proved to be predictive of adolescent female than male sexual activity on all levels of sexual involvement. A history of sexual abuse and having high educational goals were significantly associated with female sexual involvement only

Signal reconstruction from partial and magnitude information

Issued as Progress report and Final report, Project no. E-21-62

A Preliminary Report on the Marsh and Aquatic Dicotyledonous Flora of Iowa

As a part of the plan to complete a survey of the flora of Iowa, a study of the distribution of marsh and aquatic dicotyledonous phanerogams of the state was undertaken in the fall of 1950. This study, based on the collection in the herbaria of Iowa State College and the State University of Iowa in addition to the limited field experience of the author, included 103 species and varieties of plants representing 60 genera of 25 families. The Scrophulariaceae account for 14 species in 8 genera, Ranunculus is represented by 8 species, Polygonum by 7. Without attempting to show all aspects of the picture it shall be the purpose of this paper to illustrate some of the distribution patterns brought out in the study

Skin Friction Measurements by a Dual-Laser-Beam Interferometer Technique

A portable dual-laser-beam interferometer that nonintrusively measures skin friction by monitoring the thickness change of an oil film subject to shear stress is described. The method is an advance over past versions in that the troublesome and error-introducing need to measure the distance to the oil leading edge and the starting time for the oil flow has been eliminated. The validity of the method was verified by measuring oil viscosity in the laboratory, and then using those results to measure skin friction beneath the turbulent boundary layer in a low speed wind tunnel. The dual-laser-beam skin friction measurements are compared with Preston tube measurements, with mean velocity profile data in a "law-of-the-well" coordinate system, and with computations based on turbulent boundary-layer theory. Excellent agreement is found in all cases. (This validation and the aforementioned improvements appear to make the present form of the instrument usable to measure skin friction reliably and nonintrusively in a wide range of flow situations in which previous methods are not practical.

Gender and vocal production mode discrimination using the high frequencies for speech and singing

Humans routinely produce acoustical energy at frequencies above 6 kHz during vocalization, but this frequency range is often not represented in communication devices and speech perception research. Recent advancements toward high-definition (HD) voice and extended bandwidth hearing aids have increased the interest in the high frequencies. The potential perceptual information provided by high-frequency energy (HFE) is not well characterized. We found that humans can accomplish tasks of gender discrimination and vocal production mode discrimination (speech vs. singing) when presented with acoustic stimuli containing only HFE at both amplified and normal levels. Performance in these tasks was robust in the presence of low-frequency masking noise. No substantial learning effect was observed. Listeners also were able to identify the sung and spoken text (excerpts from “The Star-Spangled Banner”) with very few exposures. These results add to the increasing evidence that the high frequencies provide at least redundant information about the vocal signal, suggesting that its representation in communication devices (e.g., cell phones, hearing aids, and cochlear implants) and speech/voice synthesizers could improve these devices and benefit normal-hearing and hearing-impaired listeners

Extravehicular activities limitations study. Volume 1: Physiological limitations to extravehicular activity in space

This report contains the results of a comprehensive literature search on physiological aspects of EVA. Specifically, the topics covered are: (1) Oxygen levels; (2) Optimum EVA work; (3) Food and Water; (4) Carbon dioxide levels; (5) Repetitive decompressions; (6) Thermal, and (7) Urine collection. The literature was assessed on each of these topics, followed by statements on conclusions and recommended future research needs

Signal reconstruction from phase or magnitude

Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.Vita.Bibliography: leaves 146-150.by Monson H. Hayes III.Sc.D

Spiritual Flow: The Influence of Religious Experience on Psychological Well-being

Researchers in the psychology of religion have attempted to better explain the relationship of religion/spiritual practice and psychological benefits, including the concept of well-being. The use of optimal experiences, or flow theory, has not yet been used in this endeavor. Flow is described as experiences which include meaningful enjoyment, focus, and intrinsic rewards and motivation. Since reports of transcendent, spiritual experiences appear similar to experiences of flow, it is likely that these experiences may overlap in structure. Also, since both religious and flow experiences have been associated with psychological well-being, it is likely that a spiritual flow experience may explain, in part, the mediating factors of the relationship between religion and mental health. This study used a cross-sectional, correlational design to examine if a spiritual flow experience predicts higher reports of psychological well-being in a religious adult population. One-Hundred and seventy five religiously active adults completed an online survey which included measures of mysticism, religious orientation, flow, psychological well-being, and spiritual well-being. The goal of the study was to assess the existence and structure of spiritual flow and its potential impact on well-being across a variety of domains. There was evidence that spiritual flow experiences do exist, though there were structural differences between spiritual and general flow. Though intrinsic religious motivation did not have an major effect on well-being, spiritual flow was a major predictor of well-being. A qualitative review of which activities tend to lead to spiritual flow is also discussed.Christian H. MonsonBennett, PatrickBolinskey, KevinMurphy, Michael J.Doctor of PsychologyDepartment of PsychologyCunningham Memorial library, Terre Haute, Indiana State University.201205-10DoctoralTitle from document subtitle page. Document formatted into pages: contains 106p.: ill. Includes appendix and bibliography