Evaluation of management scenarios for controlling eutrophication in a shallow tropical urban lake

Urban lakes are typically smaller, shallower, and more exposed to human activities than natural lakes. Although the effects of harmful algal blooms (HABs) associated with eutrophication in urban lakes has become a growing concern for water resources management and environmental protection, studies focussing on this topic in relation to urban lakes are rare and knowledge of the ecological dynamics and effective management strategies for controlling eutrophication in urban lakes is lacking. This study applied an integrated three-dimensional hydrodynamics-ecological model for a small shallow tropical urban lake in Singapore and evaluated various management scenarios to control eutrophication in the lake. It is found that in-lake treatment techniques including artificial destratification, sediment manipulation and algaecide addition are either ineffective or possess environmental concerns; while watershed management strategies including hydraulic flushing and inflow nutrients reduction are more effective and have posed less environmental concerns. In this study, inflow phosphorus reduction was found to be the best strategy after evaluating the advantages and drawbacks of the management strategies studied. Runoff from the watershed exerts significant influence on urban lakes and thus an integrated water resources management at the watershed level is critical for the control of eutrophication

Evaluation of weaning strategies for intensively reared Australian fish, Murray cod, Maccullochella peelii peelii

The Australian Murray cod supports a growing national industry. However, with regard to the process of weaning fry, there is a lack of information and optimal procedures need to be developed. The aim of the present investigation was to test the biological and economic efficacy of different weaning strategies for Murray cod. Three weaning strategies were tested on triplicate groups of fish: (1) only Artemia for 5 d, 7 d on Artemia plus starter diet, and 14 d on dry diet only; (2) 12 d on Artemia plus starter diet and 14 d on dry diet only; and (3) directly to dry diet for the entire experimental period. No significant differences were recorded in the growth and feed efficiency, while significantly higher mortality (38.4 ± 0.35%) was recorded in fish weaned directly onto dry diet. Fish subjected to the first 5 d on Artemia only showed a growth reduction during this period, which was compensated by a phase of enhanced growth during the dry-diet phase. No significant differences were noted in the proximate composition of fish under the different treatments. The economic evaluation suggested that the treatment with the simultaneous supply of Artemia and starter diet is preferable.

Evaluation of a stress management course in adult education centres in rural Australia

Objective: To investigate whether attending a six-week stress management course in a rural adult education centre is effective in reducing participants' levels of stress, anxiety and depression.

Design: Repeated measures design using self-report measures of stress, anxiety and depression at commencement and completion of a six-week stress management course, and six months post-completion follow up.

Setting and participants: One hundred and thirty-two adults (age range 18–73 years) living in a rural community who self-enrolled in the stress management course at adult education centres.

Intervention: The course consisted of six weekly group sessions. Each two-hour session conducted by mental health professionals, included teaching cognitive behavioural strategies targeted at reducing individual symptoms of stress.

Main outcome measures: Comparative analysis of pre- and post-test and six-month follow up on measures of stress (Stress Symptom Checklist), anxiety and depression (Hospital Anxiety and Depression Scale).

Results: Results indicated a significant reduction in stress symptoms (F(7,90) = 34.92, P < 0.001), anxiety and depression (F(3,95) = 87.92, P < 0.001) from course commencement to course completion. These improvements were sustained six months after course completion for stress symptoms (F(11,65) = 22.40, P < 0.001), anxiety and depression (F(5,73) = 41.78, P < 0.001).

Conclusion: Findings demonstrate the stress management course is an effective community intervention in a rural community. Challenges for future implementation of the program are discussed.

An evaluation of undergraduate engineering management studies

In 1996, a major review of engineering education in Australia recommended a move from a course accreditation regime based on prescribed inputs to demonstrated graduate attributes. In the move, the policy on management studies in engineering undergraduate courses has become less definitive and more open to interpretation. A survey of recent engineering graduates suggests that those management skills most highly valued by graduates were generic professional practice skills, and that more opportunities to develop these skills in undergraduate studies would be beneficial. Survey respondents suggested the inclusion in the course of more `real world ' examples of engineering management.

Graduate evaluation of engineering management studies at Deakin University

Australia has long recognised the importance of the inclusion of management studies in undergraduate engineering courses. A survey of recent graduates of the engineering programs at Deakin University was undertaken to evaluate the effectiveness of the management studies in those programs. The survey respondents suggest that those management skills most highly valued by graduates were generic professional practice skills, and that more opportunities to develop these skills in undergraduate studies would be beneficial. Survey respondents suggested the inclusion in the course of more ‘real world’ examples of engineering management.

Mentoring volunteer festival managers : evaluation of a pilot scheme in regional Australia

Festival managers in regional locations often have limited access to didactic experiences in their field. As such, developing strategies that enhance the skills of festival management in regional locations can be challenging. This paper, set within the context of the Australian regional arts festival sector, evaluates a pilot mentoring scheme developed by Regional Arts Victoria and Arts Victoria to assist volunteer festival managers to enhance the management, and focus the artistic direction, of their festivals. The results of the evaluation, based on six case studies, indicate that mentoring is highly suited to this scenario. Recommendations are made with regard to the future application of mentoring within this context, particularly in relation to communication and formalisation.

An evaluation of streaming digital video resources in on-and off-campus engineering management education

A recent television documentary on the Columbia space shuttle disaster was converted to streaming digital video format for educational use by on- and off-campus students in an engineering management study unit examining issues in professional engineering ethics. An evaluation was conducted to assess the effectiveness of this new resource. Use of the video was optional, and about half of the class reported using the video, though usage was 90.0% for off-campus students. Most on-campus students accessed the video on-line, while all off-campus students accessed the video via CD-ROM. Off-campus students rated the educational value of the video higher than on-campus students, and were more likely to indicate that the video helped them understand the issues being studied. Most students were able to view the videos without any technical playback problems.

Evaluation of Australian undergraduate engineering management education for flexible delivery

This thesis examines issues in Australian undergraduate engineering management studies in the context of flexible learning delivery. It is proposed that, within an Australian context: a) the management skills and competencies required by graduate engineers can be determined and classified on a rational basis, permitting an educational focus on those elements most appropriate for graduates; and b) on-line and other computer-based technologies are a practical and effective method for the support of undergraduate engineering management studies. The doctoral project incorporates: • an examination of the nature of engineering management; • a review of the relevant literature establishing the importance of management studies in undergraduate engineering courses; • a review of historical and recent developments in Australian undergraduate engineering management studies; • an investigation of the management skills and competencies required by graduate engineers - based on original research; • an examination of flexible delivery of engineering education - based on professional practice experience; and • an evaluation of case studies of flexible delivery of engineering management education - based on original research and professional practice experience. A framework of ranked classified management skills is developed. Broadly, the ranking framework is generic professional skills, followed by general management skills and technical discipline specific management skills, followed by other professional discipline skills and theoretical skills. This framework provides a rational basis for design of undergraduate engineering management studies. This is supplemented by consideration of the management skills required for the future of engineering practice. It is concluded that undergraduate engineering management education is well suited to delivery and support by on-line and computer-based technology. Recent developments in improved access to the Internet, software systems for on-line collaboration and changes in copyright legislation to create a broad-based right to communication via on-line media have contributed to the facilitation of on-line delivery of teaching and learning. It is noted that though many on-line infrastructure issues have been satisfactorily resolved, higher level issues will emerge as being crucial, including the academic staff development and reward for operating in an online teaching environment and the financial sustainability of on-line development and delivery of courses.