Evaluation of Effects of Wastewater Treatment Discharge on Estuarine Water Quality

This report marks the completion of a two-year project focused on observed and estimated effects of wastewater treatment facilities (WWTFs) on estuarine water quality within the New Hampshire (NH) Seacoast region. This study was designed and carried out in an effort to help the NH Department of Environmental Services (NHDES) and NH Estuaries Project (NHEP) evaluate the effects of WWTF effluent quality on bacterial and nutrient concentrations in New Hampshire’s estuarine waters, as well as to help NHDES/NHEP identify related WWTF infrastructure problems. An extensive database of bacterial and nutrient concentrations in effluent collected post-disinfection from 9 NH WWTFs and 2 Maine WWTFs that discharge into the Great Bay and Hampton/Seabrook estuaries was developed. The data were used to determine ratios between different bacterial indicators in WWTF effluent, estimates of in-stream bacterial concentrations following effluent discharge to receiving waters and estimates of nutrient loading from selected WWTFs

The periodic standing-wave approximation: nonlinear scalar fields, adapted coordinates, and the eigenspectral method

The periodic standing wave (PSW) method for the binary inspiral of black holes and neutron stars computes exact numerical solutions for periodic standing wave spacetimes and then extracts approximate solutions of the physical problem, with outgoing waves. The method requires solution of a boundary value problem with a mixed (hyperbolic and elliptic) character. We present here a new numerical method for such problems, based on three innovations: (i) a coordinate system adapted to the geometry of the problem, (ii) an expansion in multipole moments of these coordinates and a filtering out of higher moments, and (iii) the replacement of the continuum multipole moments with their analogs for a discrete grid. We illustrate the efficiency and accuracy of this method with nonlinear scalar model problems. Finally, we take advantage of the ability of this method to handle highly nonlinear models to demonstrate that the outgoing approximations extracted from the standing wave solutions are highly accurate even in the presence of strong nonlinearities.Comment: RevTex, 32 pages, 13 figures, 6 table

Lateral Failure of Spars

It was concluded that after the critical span or depth-breadth ratio has been reached, the modulus of rupture varies approximately inversely as the first power of the span and of the depth-breadth ratio. The direction of the lateral deflection is alternate between successive supports. For this reason, we believe that rib spacing along the spar is more important in reducing lateral deflection than the distance between supports at the strut points. Furthermore, we believe that, within the limits of modern design, any increase in distance between strut points can well be compensated for by spacing the ribs closer together, providing the ribs do furnish lateral support

The influences and motivations on which students base their choice of career

The aim of the study was to examine the influences and motivations, on which students base their choice of career. 348 young people aged 14-18 years, completed a questionnaire and took part in an interview concerning their choice of career. It was found the greatest influence on their choice of career was their parents, followed by that of their teachers. There was evidence of gender differences, with same sex parental influences. Although seeking further education was the most popular next step for most respondents, marriage was more important to females than to males. Overall motivation to work was found primarily to involve money, and liking for the job. Very low on the list were long term goals, such as personal development, career advancement, and pensions. Most noticeably, the students considered status was derived from possessions, rather than employment. It was suggested, a consequence of this was that employers options to motivate workers were very limited. It was hoped, the profile of career influences and motives, would be helpful for teachers with responsibility for careers guidance

An examination of the relationship between gender and achievement amongst 'A-Level' students working alone or in pairs

This study examines the interaction between gender and the effect on student learning of working alone or in either single or mixed sex pairs. 68 A-level students (mean age 16.8 years) , all attending mixed sex schools, took part in a task which incorporated a number of basic learning processes. They worked alone or in either in single or mixed sex pairs. It was found male students got more answers correct when they worked with females, than when they worked alone. It was found that, in mixed sex pairs, both male and female students gave less wrong answers than did individuals. In addition, females had more confidence in their correct answers when working with males, than when working with other females, or alone. It was suggested there could be advantages under some circumstances, in mixed sex working for both male and female students

Training leisure centre instructors: client motivational profiles examined

Purpose: To investigate the motivations of clients attending leisure centres/clubs. It is noted training programmes for instructors tend to neglect this, particularly in relation to the gender and age of clients. Method: In this study 460 recreational athletes including equal numbers of males and females in the two age groups, 17-27 years and 37-84 were interviewed and given a short questionnaire concerning their motives for taking part in activities in leisure centres/clubs. Findings: It was found both gender and age influenced motivations to participate and reasons for leaving. Implications: The need for instructors to be made aware of the very different motives driving recreational athletes to attend clubs was stressed if client wastage is to be reduced