Massive data delivery in unstructured peer-to-peer networks with network coding

With more and more multimedia applications on the Internet, such as IPTV, bandwidth becomes a vital bottleneck for the booming of large scale Internet based multimedia applications. Network coding is recently proposed to take advantage to use network bandwidth efficiently. In this paper, we focus on massive multimedia data, e.g. IPTV programs, transportation in peer-to-peer networks with network coding. By through study of networking coding, we pointed out that the prerequisites of bandwidth saving of network coding are: 1) one information source with a number of concurrent receivers, or 2) information pieces cached at intermediate nodes. We further proof that network coding can not gain bandwidth saving at immediate connections to a receiver end; As a result, we propose a novel model for IPTV data transportation in unstructured peer-to-peer networks with network coding. Our preliminary simulations show that the proposed architecture works very well.

Online self and peer assessment in large, multi-campus, multi-cohort contexts

The increasing use of team assignments within higher education is well documented. The driving forces behind this include desires to facilitate reflective and collaborative learning, to develop generic teamwork skills for graduate employment and to reduce the grading workloads of faculty staff. Students however consistently report dissatisfaction when the assessment of team assignments produces a common grade for all team members. Self-andpeer-assessment (SAPA) is presented as a fair, valid and reliable method of producing information about ongoing team processes. This information can provide ongoing feedback to team members and rich formative data to instructors attempting to assess the team process and students’ teamwork skills. This data can also enable individualised summative assessment in dysfunctional teams or situations of uneven team member contributions. Whilst manual SAPA protocols can work effectively for smaller classes, computer-assisted SAPA offers a solution to the problems of large classes. This paper reports on the early stages of an online SAPA tool, originally developed for small classes of architecture students, adapted for use by very large business communication classes comprising up to 1000 students in a semester. This large unit is delivered on four Australian campuses as well as off-campus and in off-shore mode, by up to fourteen instructors at any one time. The paper documents how three researchers from very different backgrounds worked to create their own research team, implement a pilot study, and adapt the online tool, whilst adhering to comparability of assessment constraints and maintaining integrity of research design.

The role of peer support in facilitating psychosocial adjustment to chronic illness in adolescence

This article describes a Chronic Illness Peer Support (ChIPS) programme designed to assist young people in their adjustment to life with a chronic medical condition. The ChIPS programme takes a non-categorical approach to participation, recognizing that young people with different medical conditions experience many similar concerns. Support groups are facilitated by a health professional and peer co-leader. Groups meet weekly for 8 weeks and typically include between six and eight young people. Young people can choose to remain involved in broader social, educational and recreational activities following completion of the 8-week programme. We discuss nine psychosocial mechanisms by which peer support groups such as ChIPS might act to improve resilience and well-being among participants. We also discuss some theoretical risks in running support groups for chronically ill young people, which emphasize the importance of training and support of group leaders, including the peer co-leaders. The article concludes with a personal testimony by a ChIPS participant that was prepared for the 2003 Australian and New Zealand Adolescent Health Conference.

Sibling peer support group for young people with a sibling using drugs: a pilot study

Siblings of young people abusing drugs are at particular risk for drug abuse and other health compromising behaviors. A Sibling Peer Support Group was developed by the Centre for Adolescent Health (Melbourne, Australia) for young people aged 13 to 18 years with a problematic drug user in their family. Groups aimed to provide support and information, promote harm minimization, and reduce the sense of isolation. The project emanated from the recognized need for specific support for adolescent siblings of problematic drug users. Evaluation of two pilot groups indicated positive benefits for group members, who reported feeling better informed, more supported, and having a reduced sense of isolation. Parents reported that their adolescent attending the group demonstrated improved communication with, and greater understanding and tolerance of, the family member using drugs. Promising indicators at a community level were manifested in enthusiastic collaboration among schools, police and local service agencies, and the organization of a local drug forum. There appeared to be little evidence that the groups inadvertently encouraged drug use. Recruitment of young people into groups was the major challenge for the project, but among drug and alcohol and family organizations there was support for the concept of a Sibling Peer Support Group. A new model to overcome the challenge of recruitment is proposed.

Peer mentoring the first time around : Is it all a matter of negotiation?

In 2002, the senior executive at Deakin University sought applications from staff for academic professional development funding. This was intended to support programs related to the Deakin First Year Initiative, a university-wide coordinated approach to transition. The Faculty of Health & Behavioural Sciences was successful in gaining a grant for the design, implementation and evaluation of a peer mentoring pilot program, which has been introduced this year for students undertaking the Bachelor of Applied Science (Health Sciences). This generic undergraduate program draws from and complements the specialist fields of study on offer in the Faculty. It is very flexible, within given parameters, allowing students to combine study according to their interests, abilities and career aspirations. In this session, we will explore the challenges faced so far by the program managers in devising a program that will successfully cater for approximately 50 first year students undertaking diverse majors across the Faculty.

Managing behavioural symptoms of dementia : Effectiveness of staff education and peer support

This study was designed to investigate the impact of staff education on the behaviour and quality of life of residents with dementia and on staff members' attitudes about working with people with dementia and level of burnout. Staff from three aged care facilities participated in the study (n = 52). These facilities were randomly assigned to one of two intervention groups or a control group. Staff assigned to the intervention groups received an eight-week behaviourally-based programme. Staff from one aged care facility also participated in a peer support group designed to reinforce educational material and facilitate positive changes among staff members. Behavioural symptoms displayed by residents (n = 76) in each of the facilities were also assessed. Assessments were conducted at pre-intervention, post-intervention, three- and six-month follow-up. The results of this study indicated that education or peer support was not associated with an improvement in resident behaviour or quality of life. Education or peer support also did not impact on staff members' level of burnout. There was, however, a change in staff members' attitudes about working with people with dementia. Possible explanations for these findings and implication for further research are considered.

Peer mentoring in an accounting setting : a case study of mentor skill development

This paper provides the background to the adoption of a peer mentoring program including the preparation of mentors and the classroom role of mentors. The paper also includes a discussion of alternative models of peer mentoring and an examination of factors to be considered in adopting mentoring as a teaching and learning resource. Using a case study of third-year undergraduate accounting students who were employed to mentor fellow students in a second-year accounting unit at an Australian university, the paper examines peer mentoring as a classroom resource in the teaching of accounting concepts. The study includes an evaluation of the perceptions of generic skill development by peer mentors illustrating how mentoring can be a reciprocal process, in that the mentor's skills can be enhanced while fulfilling a supporting role to junior students. The programme evaluation also demonstrated that accounting educators could contribute to the development of students' generic skills outside the traditional classroom setting.

A cross-cultural study into peer evaluations of women's leadership effectiveness

Purpose: The present paper is based on a cross-cultural exploration of middle managers in two diverse cultures and aims to focus on how the leadership styles of managerial women are perceived and evaluated. In particular, female and male peer evaluations of leadership effectiveness in Malaysia and Australia are to be explored.

Design/methodology/approach: Surveys from 324 middle managers from Malaysia and Australia were quantitatively analysed. The sample for the study was drawn from organisations in four industry types in both countries.

Findings:  Findings suggest that evaluations of female managers' leadership styles in general, and within the respondent's own organisations, were strongly culture specific, especially in Malaysia. The results reflected the strongly held values, attitudes and beliefs of each country. While this is not unexpected, it does highlight a need to be cautious when interpreting Western research results and attempting to transplant those into other cultures. In Malaysia, female managers were not seen as effective in the leadership styles they adopted in their roles when compared to the Australian female managers' evaluations. Such an evaluation may have had little to do with an objective appraisal of the female managers' capability, but rather with a strongly held cultural belief about the appropriate role of women in society, and in organisations in particular.

Research limitations/implications:  It is suggested that national culture manifests itself in the values, attitudes and behaviours of people. Cultural influences are therefore likely to impact on the way women and men behave in the workplace, particularly when roles of authority and power are evident, and the way in which that behaviour will be evaluated by others. Further research using different samples in different cultures are recommended. In addition, the influence of ethnicity, race or religion in plural countries such as Malaysia and Australia is also worthy of investigation.

Practical implications:  This research suggests that values and attitudes are strongly culture-specific and therefore have the ability to influence evaluations at an organisational level. Such an awareness of cultural influences should guide appropriate human resource practices, particularly within a globalized environment.

Originality/value:  The inclusion of a gender comparison in the data analysis in this paper is a significant attempt to add to the extant knowledge of the cross-cultural research. This is a unique contribution because of the omission of a gender perspective in the previous two seminal studies in culture literature (i.e. Hofstede and House et al.). In addition, the findings suggest that culture-specific influences are important determinants that impose expectations on the role of women differently from men in society and within organisations hence, making the gender comparison of the findings more significant.

Building a connected community of learners : the postgraduate peer mentor program

Student peer mentor programs are recognised as a valid component of a multi-faceted strategy to improve student engagement within higher education. This paper reports some preliminary results from research investigating how such programs help support diverse student needs in a multicultural environment. Our results are from a study of a pilot postgraduate student peer mentoring program set up to support new students in the Faculty of Business and Law at Deakin University, Australia. The postgraduate student body at Deakin is quite diverse and includes a large proportion of international students. We present examples to show how a peer mentoring program can improve the social engagement of students, help overcome cross-cultural communication barriers and contribute to the development of academic skills.