An exploratory investigation examining male and female students' initial impressions and expectancies of lecturers

The aim of this study was to examine the informational cues that male and female students perceive to be influential when developing initial impressions and expectancies of a lecturer. University students (n 752) rated the extent to which 30 informational cues influence their initial perceptions of a lecturer. Following exploratory factor analysis (EFA), a five-factor model (i.e. appearance (APP), accessories (ACC), third-party reports (TPR), communication skills (CS) and nationality/ethnicity (NE)) was extracted for male students and a five-factor model (i.e. ACC, TPR, APP, interpersonal skills (IPS) and engagement (ENG)) extracted for female students. Inspection of mean scores identified that male students rated CS (e.g. clarity of voice) and TPR (e.g. qualifications) and female students IPS (e.g. control of class), ENG (e.g. eye contact) and TPR to be influential factors in forming initial impressions and expectancies of a lecturer. The findings further identify the potential for expectancy effects within student lecturer interactions

Competitive Sport, Self-Efficacy and Academic Achievement: A Multiple Regression Analysis Involving Secondary School Students in Seventh-Day Adventist Schools

Physical activity and academic achievement are important and valued aspects of society. The present study investigated the relationship between involvement in competitive sport, self-efficacy beliefs and academic achievement in Seventh-day Adventist secondary school students. Within the study, competitive sport was divided into three aspects, involvement, enjoyment and success. Self-efficacy was investigated at two levels, general, and a more task specific level including academic and Personal Development & Health self-efficacy. Student self-reporting was used in measuring achievement in the subject areas of English, Mathematics and Personal Development and Health. Data were collected from 619 students in 3 Seventh-day Adventist secondary schools using a 96-item questionnaire. Multiple linear regression analysis was employed to test proposed relationships in a theoretically constructed causal model, linking background, intermediate and outcome variables. Aspects of competitive sport were found to have direct and indirect influences on levels of self-efficacy as well as academic and PD/H achievement. High general self-efficacy was found to significantly influence more specific levels of self-efficacy and there were strong positive paths existing from academic self-efficacy to academic achievement and PD/H self-efficacy to PD/H achievement. Pathways within the causal model identified that students who are successful in competitive sport are more likely to achieve highly in Mathematics, English and PD/H. Students who enjoy their involvement in competitive sport exhibit high beliefs of PD/H self-efficacy and achieve highly in PD/H

Synergistic relationships among remote-sensing and geophysical media: Geological and hydrological applications

The synergistic relationships among LANDSAT imagery, Skylab photographs, and aerial photographs were useful for establishing areas of near surface bedrock. Lineaments were located on LANDSAT imagery and aerial photographs during 1978 and near surface water tables were to be located during 1980. Both of these subjects can be identified by remote sensing methods more reliably than individual outcrops, which are small and occur in a wide variety of environments with a wide range of responses. Bedrock outcrops themselves could not be resolved by any of the data sources used, nor did any combination of data sources specifically identify rock at the ground surface. The data sources could not simply be combined mathematically to produce a visual image of probable areas of near surface bedrock. Outcrops and near surface bedrock had to be verified visually at the site. Despite these drawbacks, a procedure for locating areas of near surface bedrock within which actual surface outcrops may occur was developed

Processing of combined domestic bath and laundry waste waters for reuse as commode flushing water

An experimental investigation of processes and system configurations for reclaiming combined bath and laundry waste waters for reuse as commode flush water was conducted. A 90-min recycle flow was effective in removing particulates and in improving other physical characteristics to the extent that the filtered water was subjectively acceptable for reuse. The addition of a charcoal filter resulted in noticeable improvements in color, turbidity, and suds elimination. Heating and chlorination of the waste waters were investigated for reducing total organism counts and eliminating coliform organisms. A temperature of 335.9 K (145 F) for 30 min and chlorine concentrations of 20 mg/l in the collection tank followed by 10 mg/l in the storage tank were determined to be adequate for this purpose. Water volume relationships and energy-use rates for the waste water reuse systems are also discussed

The chemical/physical and microbiological characteristics of typical bath and laundry waste waters

Chemical/physical and microbiological characteristics are studied of typical bath and laundry waters collected during a 12 day test in which the untreated waste waters were reused for toilet flush. Most significant changes were found for ammonia, color, methylene blue active substances, phosphates, sodium, sulfates, total organic carbon, total solids, and turbidity in comparison with tap water baseline. The mean total number of microorganisms detected in the waste waters ranged from 1 million to 10 to the 7th power cells/m1 and the mean number of possible coliforms ranged from 10 to the 5th power to 1 million. An accumulation of particulates and an objectible odor were detected in the tankage used during the 12 day reuse of the untreated waste waters. The combined bath and laundry waste waters from a family of four provided 91 percent of the toilet flush water for the same family

Data acquisition system for NASA LaRC impact dynamics research facility

A data system is designed to permit the simultaneous recording of 90 data channels on one 28 track magnetic tape recorder using a constant bandwidth FM multiplexing technique. Dynamic signals from transducers located in the test aircraft are amplified and fed to voltage controlled oscillators where they are converted to discrete FM signals. The signals from each group of five VCO's are fed to a mixer/distribution amplifier where they are combined into one composite signal and recorded, using direct recording techniques, on one magnetic tape recorder track. Millivolt signals from the recorders reproduce heads are amplified to one volt and then electronically switched to an FM demultiplexing system where appropriate frequency discrimination and signal filtering recover the original analog information

A Frattini Theory for Leibniz Algebras

A Frattini theory for non-associative algebras was developed by Towers and results for particular classes of algebras have appeared in various articles. Especially plentiful are results on Lie algebras. It is the purpose of this paper to extend some of the Lie algebra results to Leibniz algebras

The major drawbacks to the use of wireless communication products in education

This paper considers the use of wireless devices as an educational facilitator both in the classroom and in a business environment.  There are many characteristics of such devices which are favourable to their use in such settings.  But there are also problems.  We identify the main problematic areas as being security, low speed and reliability, and the lack of interoperability.  In our opinion, the use of wireless devices for educational purposes will grow quickly, and the problems of reliability, speed and standards will be overcome.  However, the issue of security will remain a major problem into the distant future

Kangaroo Bond Issuance in Australia

The issue of kangaroo bonds (foreign A$-denominated bonds) has become a significant part of the Australian bond market. The Australian experience offers some lessons to other countries interested in developing their domestic bond markets