Discourse strategies and power roles in student-led distance learning

The assertion of identity and power via computer-mediated communication in the context of distance or web-based learning presents challenges to both teachers and students. When regular, face-to-face classroom interaction is replaced by online chat or group discussion forums, participants must avail themselves of new techniques and tactics for contributing to and furthering interaction, discussion, and learning. During student-only chat sessions, the absence of teacher-led, face-to-face classroom activities requires the students to assume leadership roles and responsibilities normally associated with the teacher. This situation raises the questions of who teaches and who learns; how students discursively negotiate power roles; and whether power emerges as a function of displayed expertise and knowledge or rather the use of authoritative language. This descriptive study represents an examination of a corpus of task-based discussion logs among Vietnamese students of distance learning courses in English linguistics. The data reveal recurring discourse strategies for 1) negotiating the progression of the discussion sessions, 2) asserting and questioning knowledge, and 3) assuming or delegating responsibility. Power is defined ad hoc as the ability to successfully perform these strategies. The data analysis contributes to a better understanding of how working methods and materials can be tailored to students in distance learning courses, and how such students can be empowered by being afforded opportunities and effectively encouraged to assert their knowledge and authority.

Game Audio in Audio Games : Towards a Theory on the Roles and Functions of Sound in Audio Games

For the past few decades, researchers have increased our understanding of how sound functions within various audio–visual media formats. With a different focus in mind, this study aims to identify the roles and functions of sound in relation to the game form Audio Games, in order to explore the potential of sound when acting as an autonomous narrative form. Because this is still a relatively unexplored research field, the main purpose of this study is to help establish a theoretical ground and stimulate further research within the field of audio games. By adopting an interdisciplinary approach to the topic, this research relies on theoretical studies, examinations of audio games and contact with the audio game community. In order to reveal the roles of sound, the gathered data is analyzed according to both a contextual and a functional perspective. The research shows that a distinction between the terms ‘function’ and ‘role’ is important when analyzing sound in digital games. The analysis therefore results in the identification of two analytical levels that help define the functions and roles of an entity within a social context, named the Functional and the Interfunctional levels. In addition to successfully identifying three main roles of sound within audio games—each describing the relationship between sound and the entities game system, player and virtual environment—many other issues are also addressed. Consequently, and in accordance with its purpose, this study provides a broad foundation for further research of sound in both audio games and video games.

Relative roles of glyceollin, lignin and the hypersensitive response and the influence of ABA in compatible and incompatible interactions of soybeans with Phytophthora sojae

The relative roles of glyceollin, lignin and the hypersensitive response (HR) in pathogen containment and restriction were investigated in soybean (Glycine max L. [Merr.]) cultivars that were inoculated with Phytophthora sojae Kaufmann and Gerdemann. Concentrations of endogenous abscisic acid (ABA) levels in etiolated soybean hypocotyls were reduced by application of the ABA biosynthesis inhibitor norflurazon or raised by exogenous ABA application. Incompatible interactions in leaves and hypocotyls were characterized by HR, phenolic and lignin deposition and glyceollin accumulation. Compatible interactions resulted in light coloured, water-soaked spreading lesions with minimal lignin deposition or glyceollin accumulation and the absence of an HR. Norflurazon treatment restricted the spread of the pathogen and increased glyceollin accumulation in compatible tissues. Exogenous ABA addition caused spreading lesions in normally incompatible interactions and reduced glyceollin accumulation. Phenolic deposition and HR were unchanged by either treatment in incompatible or compatible interactions. The uncoupling of glyceollin synthesis from the HR and phenolic and lignin deposition by ABA and norflurazon treatment showed that glyceollin is a major factor in restriction of the pathogen during these interactions.

The roles of static depth information and object-image relative motion in perception of heading

In a series of 6 experiments, two hypotheses were tested: that nominal heading perception is determined by the relative motion of images of objects positioned at different depths (R. F. Wang & J. E. Cutting 1999) and that static depth information contributes to this determination. By manipulating static depth information while holding retinal-image motion constant during  simulated self-movement, the authors found that static depth information played a role in determining perceived heading. Some support was also found for the involvement of R. F. Wang and J. E. Cutting’s (1999) categories of object-image relative motion in determining perceived heading. However, results suggested an unexpected functional dominance of information about heading relative to apparently near objects.

Predicting self-esteem during unemployment: the effect of gender, financial deprivation, alternate roles, and social support

Two hundred and one unemployed men and women participated in a cross-sectional study that assessed self-esteem, financial deprivation, number of alternate roles, and use of social support. Financial deprivation, alternate roles, and social support each had a main effect on self-esteem. In addition, these variables interacted with gender to affect self-esteem. Specifically, financial deprivation had a greater negative association with self-esteem in men as compared with women. In contrast, alternate roles and social support had a stronger positive relationship to self-esteem in women than in men. The incorporation of these findings into intervention programs for unemployed persons is discussed.

Roles of MFI support of ICTs to aid socio-economic development

Today there is a consensus on the use of Information and Communication Technologies (ICTs) for development and ICTs are widely recognized as vital tools to promote various social goals. These collections of technologies ICTs have also enabled and smoothed an avenue for monumental tran formation in the process of socio-economic development in developing countries. In this paper, we discuss two major areas in the development arena associated with socio-economic development in South Asia, namely, the role of Microfinance in expansion of ICT in the region and its effects on development and poverty alleviatiori. We put forward the argument that through the intervention of microfinance, ICT can both directly and indirectly impact on growth and the way in which the adoption of ICT can be distributed to the poor.

Allocative and informational pricing roles in MBA program choice

This paper reports on a study of how prospective and current MBA students (n = 699) made tradeoffs between tuition price and other variables in choosing a university program in the Australian market. Two price segments were identified: price-negative and price-positive. The price-positive segment constituted 13 per cent of the sample. The behaviour of the two price segments is interpreted in relation to the allocative and informational roles of price. Price-positive respondents were found to be more concerned with the reputational characteristics of universities and programs in making their choice. Age, enrolment mode, and residential state were found to be associated with segment membership. The results suggest that an MBA by distance education can be regarded as a prestige product for some market segments.

Australian consumers expectations for expanded nursing roles in general practice - choice not gatekeeping

While research has focussed on the current and potential role of the practice nurse (PN) in Australia, the acceptability of this role by consumers has not been investigated. In 2002, two independent studies were carried out into consumer perceptions of PNs. A discussion between the two groups of researchers at the inaugural National Practice Nurse Conference in 2003, identified significant similarities in the findings of these studies. This article reports the combined findings as they relate to consumers' desire for access to the health practitioner of their choice, and their concern that PNs may assume a gatekeeping role. These perceptions may have significant impact on the acceptance of PNs across Australia.

Raising the funds - spending the funds: a case study of the effectiveness of both roles of NGO's

Non-governmental organisations (NGOs) must be effective in both raising funds and using these funds to implement programs in order to improve the circumstances of the poor. This chapter presents a case study of World Vision Australia's (WVA) fundraising and programming responses to the Asian Tsunami. The initial stages of the fundraising campaign were largely unplanned and reactive. Yet WVA received over $110 million for its tsunami appeal in just a little over three months. This is incomparable with other recent large-scale disaster fundraising campaigns. The experiences of how the initial phases of the response were implemented arc gauged through a qualitative analysis of interviews conducted with twenty-one staff members who completed short-term secondments during the initial tsunami response. These interviews extract a number of reflections of WVA's programming and provide a number of lessons for WVA for future complex humanitarian emergencies. This chapter thus reviews the effectiveness of both roles of NGOs - raising funds and expending these funds to implement programs.

Do knowledge and experience have specific roles in triage decision-making?

Accuracy of triage decisions is a major influence on patient outcomes. Triage nurses' knowledge and experience have been cited as influential factors in triage decision-making. The aim of this article is to examine the independent roles of factual knowledge and experience in triage decisions. All of the articles cited in this review were research papers that examined the relationship between triage decisions and knowledge and/or experience of triage nurses. Numerous studies have shown that factual knowledge is an important factor in improving triage decisions. Although a number of studies have examined the role of experience as an independent influence on triage decisions, none have found a significant relationship between experience and triage decision-making. Factual knowledge appears to be more important than years of emergency nursing or triage experience in triage decision accuracy. Many triage education programs are underpinned by the assumption that knowledge acquisition will result in improved triage decisions. A better understanding of the relationships between clinical decisions, knowledge, and experience is pivotal for the rigorous evaluation of education programs.

The roles of prior experience and the timing of misinformation presentation on young children's event memories

The current study addressed how the timing of interviews affected children's memories of unique and repeated events. Five- to six-year-olds (N= 125) participated in activities 1 or 4 times and were misinformed either 3 or 21 days after the only or last event. Although single-experience children were subsequently less accurate in the 21- versus 3-day condition, the timing of the misinformation session did not affect memories of repeated-experience children regarding invariant details. Children were more suggestible in the 21- versus 3-day condition for variable details when the test occurred soon after misinformation presentation. Thus, timing differentially affected memories of single and repeated events and depended on the combination of event-misinformation and misinformation-test delays rather than the overall retention interval.