Oral health in transition: the case of Indigenous peoples from Brazil

The objective of this paper is to summarise epidemiological information about the distribution of dental caries among Indigenous peoples in Brazil. The authors also present a case study of a specific group of Xavante Indians, one of the most numerous of Brazil`s Indigenous peoples, describing how their oral health has deteriorated over recent decades, and showing how an oral health programme is attempting to reverse the present trend of increase in caries. The programme at Etenheritipa Xavante village incorporated three principal components: educational, preventive, and clinical. From the beginning, the programme included epidemiological record keeping for monitoring the level of caries in the population. Transversal studies of the condition of oral health among the Xavante of Etenheritipa were undertaken in 1999, 2004, and 2007. In the period from 2004 to 2007 the DMFS values in the 11-15 age cohort had a significant reduction in caries experience. The mean DMFS score fell from 4.95 in 2004 to 2.39 in 2007 (p<0.01). An increase in the percent of individuals who were free from caries was also noted: in 1999, 20% of adolescents 11-15 had no caries; in 2007, the proportion had risen to 47%. The Xavante case is a prime example of the transition in oral health that is taking place among the Indigenous peoples of the Americas, and it highlights the importance of oral health promotion through preventive measures such as access to fluoridation and basic care in reducing the inequality between Indians and non-Indians.

Can the Deforestation Breeze Change the Rainfall in Amazonia? A Case Study for the BR-163 Highway Region

The authors simulated the effects of Amazonian mesoscale deforestation in the boundary layer and in rainfall with the Brazilian Regional Atmospheric Modeling System (BRAMS) model. They found that both the area and shape (with respect to wind incidence) of deforestation and the soil moisture status contributed to the state of the atmosphere during the time scale of several weeks, with distinguishable patterns of temperature, humidity, and rainfall. Deforestation resulted in the development of a three-dimensional thermal cell, the so-called deforestation breeze, slightly shifted downwind to large-scale circulation. The boundary layer was warmer and drier above 1000-m height and was slightly wetter up to 2000-m height. Soil wetness affected the circulation energetics proportionally to the soil dryness (for soil wetness below similar to 0.6). The shape of the deforestation controlled the impact on rainfall. The horizontal strips lined up with the prevailing wind showed a dominant increase in rainfall, significant up to about 60 000 km(2). On the other hand, in the patches aligned in the opposite direction (north-south), there was both increase and decrease in precipitation in two distinct regions, as a result of clearly separated upward and downward branches, which caused the precipitation to increase for patches up to 15 000 km(2). The authors` estimates for the size of deforestation impacting the rainfall contributed to fill up the low spatial resolution in other previous studies.

Impact of biomass burning aerosols on precipitation in the Amazon: A modeling case study

A study of the potential role of aerosols in modifying clouds and precipitation is presented using a numerical atmospheric model. Measurements of cloud condensation nuclei (CCN) and cloud size distribution properties taken in the southwestern Amazon region during the transition from dry to wet seasons were used as guidelines to define the microphysical parameters for the simulations. Numerical simulations were carried out using the Brazilian Development on Regional Atmospheric Modeling System, and the results presented considerable sensitivity to changes in these parameters. High CCN concentrations, typical of polluted days, were found to result in increases or decreases in total precipitation, depending on the level of pollution used as a reference, showing a complexity that parallels the aerosol-precipitation interaction. Our results show that on the grids evaluated, higher CCN concentrations reduced low-to-moderate rainfall rates and increased high rainfall rates. The principal consequence of the increased pollution was a change from a warm to a cold rain process, which affected the maximum and overall mean accumulated precipitation. Under polluted conditions, cloud cover diminished, allowing greater amounts of solar radiation to reach the surface. Aerosol absorption of radiation in the lower layers of the atmosphere delayed convective evolution but produced higher maximum rainfall rates due to increased instability. In addition, the intensity of the surface sensible heat flux, as well as that of the latent heat flux, was reduced by the lower temperature difference between surface and air, producing greater energy stores at the surface.

Covariance structure in the skull of Catarrhini: a case of pattern stasis and magnitude evolution

The study of the genetic variance/covariance matrix (G-matrix) is a recent and fruitful approach in evolutionary biology, providing a window of investigating for the evolution of complex characters. Although G-matrix studies were originally conducted for microevolutionary timescales, they could be extrapolated to macroevolution as long as the G-matrix remains relatively constant, or proportional, along the period of interest. A promising approach to investigating the constancy of G-matrices is to compare their phenotypic counterparts (P-matrices) in a large group of related species; if significant similarity is found among several taxa, it is very likely that the underlying G-matrices are also equivalent. Here we study the similarity of covariance and correlation structure in a broad sample of Old World monkeys and apes (Catarrhini). We made phylogenetically structured comparisons of correlation and covariance matrices derived from 39 skull traits, ranging from between species to the superfamily level. We also compared the overall magnitude of integration between skull traits (r(2)) for all Catarrhim genera. Our results show that P-matrices were not strictly constant among catarrhines, but the amount of divergence observed among taxa was generally low. There was significant and positive correlation between the amount of divergence in correlation and covariance patterns among the 30 genera and their phylogenetic distances derived from a recently proposed phylogenetic hypothesis. Our data demonstrate that the P-matrices remained relatively similar along the evolutionary history of catarrhines, and comparisons with the G-matrix available for a New World monkey genus (Saguinus) suggests that the same holds for all anthropoids. The magnitude of integration, in contrast, varied considerably among genera, indicating that evolution of the magnitude, rather than the pattern of inter-trait correlations, might have played an important role in the diversification of the catarrhine skull. (C) 2009 Elsevier Ltd. All rights reserved.

Areas of endemism in the Antarctic - a case study of the benthic hydrozoan genus Oswaldella (Cnidaria, Kirchenpaueriidae)

Aim The aim of this study is to investigate areas of endemism within the distribution of Oswaldella species in the Southern Ocean, thereby testing previous hypotheses and proposing alternative scenarios for Antarctic evolution. Location Southern Ocean, Antarctic and sub-Antarctic waters of southern South America. Methods We prepared a database for the 31 currently known species of the Antarctic genus Oswaldella, which includes geographical locations gathered from published taxonomic studies as well as materials from museums and expeditions. A parsimony analysis of endemicity (PAE) was used to test hypotheses of distribution patterns. Results Four areas of endemism are hypothesized: southern South America, two high Antarctic areas (eastern and western) and a larger area, mainly in western Antarctica at lower latitudes and including insular areas (but not the Balleny Islands). Main conclusions The results support, in part, previous hypotheses for the Southern Ocean region, while providing more detailed resolution. The areas of endemism may reflect both historical and ecological processes that influenced the Antarctic biota. The Magellanic area reflects the well-known affinities of the Antarctic biota with that of South America and may be a consequence of dispersal through deeper (and colder) waters, followed by speciation. The second area, the largest one, encompasses most of the insular faunas and may also be associated with deeper waters formed since 43 Ma. The third area may be explained by the development of seaways in the circum-Antarctic region beginning 50 Ma. Finally, the fourth zone, with a very poor fauna, coincides with the opening of the Tasman Strait and the formation of the Australo-Antarctic Gulf, associated with a minor wind-driven current.

Manipulation in Newspaper Articles : A Political Discourse Analysis of Lexical Choice and Manipulation in Japanese Newspaper Crisis Reporting in the case of North Korea

This paper analyzes some forms of linguistic manipulation in Japanese in newspapers when reporting on North Korea and its nuclear tests. The focus lies on lexical ambiguity in headlines and journalist’s voices in the body of the articles, that results in manipulation of the minds of the readers. The study is based on a corpus of nine articles from two of Japan’s largest newspapers Yomiuri Online and Asahi Shimbun Digital. The linguistic phenomenon that contribute to create manipulation are divided into Short Term Memory impact or Long Term Memory impact and examples will be discussed under each of the categories.The main results of the study are that headlines in Japanese newspapers do not make use of an ambiguous, double grounded structure. However, the articles are filled with explicit and implied attitudes as well as attributed material from people of a high social status, which suggests that manipulation of the long term memory is a tool used in Japanese media.

Case studies in learning disability: implications for instruction

A significant number of children with learning disabilities may hold negative attributions about themselves which not only impact on their willingness to learn but put themselves at risk of developing depression. A multi-disciplinary assessment team found evidence for the existence of at least two distinct patterns of learning disability. It was concluded that interventions must focus not only on content areas but on the individual attributions the child holds about his or her ability and potential.

Corporate liability for workplace deaths and injuries-reflecting on Victoria's laws in the light of the Esso Longford explosion

The purpose of this article is to consider some different legal models for the liability of corporations for the deaths and serious injuries of their employees, with particular emphasis on the law in Victoria.

Two recent developments in Victoria prompt this consideration. First, on 30 July 2001, the Victorian Supreme Court handed down its sentencing decision in the case arising from the explosion on 25 September 1998 at the Longford gas plant operated by Esso Australia Pty Ltd. The decision marked the end of the formal public consideration of a devastating event in Victorian industrial history, which began with the Royal Commission set up on 20 October 1998 to investigate the causes of an explosion in which two workers died and eight others were injured. Second, in early 2002, the Victorian Government failed in its attempt to introduce new criminal offences for corporate employers whose employees are killed or seriously injured at work. In spite of their failure to be passed by the Legislative Council in Victoria, these proposals warrant consideration. They represent a growing trend by policy makers in attempting to address more effectively the question of the liability for deaths and serious injuries of workers to employers who operate through the corporate form.

The eradication of compulsory retirement and age discrimination in the Australian workplace : A cause for celebration and concern

Earlier this year the Age Discrimination Act 2004 was passed by the Commonwealth government. This paper provides an overview of the Age Discrimination Act 2004 and critically examines whether it is likely to be successful in eradicating compulsory retirement and age discrimination within the workforce. Empirical studies suggesting that law reform alone is insufficient to eliminate ageist employer behaviour are discussed as is the need for public awareness campaigns. Given that compliance with the law is closely linked with normative belief, this paper also considers whether a moral duty to refrain from age discrimination can be grounded within the natural law ethic.

Learning in virtual teams: exploring the student experience

In 2005 an existing undergraduate course in project management was converted from face-to-face mode to wholly online mode. Wholly online mode means that there are no face-to-face classes at all, and all teaching and learning is facilitated through an online environment.

The revised project management course was designed with an underlying problem-based learning (PBL) pedagogy and used a simulated, fictitious telecommunications company, United Enterprises (UE), as a case study learning resource. The students worked in virtual teams to complete online learning activities and to solve authentic project management tasks for UE. Employees of UE were available online to provide direction and answer further questions about the tasks.

The overall research study used an action research methodology in which feedback was elicited from two groups of stakeholders involved in the project management course - students and teaching staff. The feedback was used to plan, develop and implement the new Information Technology (IT) Professional Practice course.

This paper reports on the findings of three anonymous student surveys that were conducted after each of the main project management topics and tasks were completed. The surveys sought feedback in a number of areas. However, the feedback reported here relates specifically to student opinions about their experiences of working in virtual teams within the learning environment. Other aspects of the research, including student perceptions of UE and feedback from the teaching staff, are not reported here.

Across the three surveys, most students indicated that they valued the opportunity to discuss various aspects of the course with peers and teaching staff online, and to interact with real-life employees of UE. Although discussion forums were the prescribed method for communication other forms of communication such as email, chat and face-to-face meetings were also used. According to the students, the best things about online group work were that it provides the flexibility of time and place; it allows communication and participation to be recorded; and is an ‘efficient’ way of working. The worst things about online group work were that communication is more difficult and that team members leave participation and submission to
the last minute. While up to 15 percent of students did not like the experience of online group work at all, overall students were generally satisfied with this style of learning and enjoyed the experience of working collaboratively within a virtual team.

The research has highlighted a number of areas where improvements can be made to the student experience of working in virtual teams. These improvements will be adopted in the development and delivery of the new course as part of the action research study.

Employing wikis for online collaboration in the e-learning environment: case study

This paper examines the various ways in which students reflect on their very recent experiences in collaborating in an online e-learning environment. Wikis, fully editable Websites, are easily accessible, require no software and allow its contributors, in these case students, to feel a sense of responsibility and ownership. Wikis are everywhere, but, unfortunately, the online literature has not yet begun to focus enough on wikis (Mattison 2003). Whereas students are used to the WebCT based university Elearning environment, Deakin Studies Online (DSO), this case study, completed in Nov 2004, was conducted to test the wiki platform as a means of online collaboration in the tertiary education environment. A full analysis of the results is presented, as are recommendations for improving the platform in an effort to employ wikis and utilize them to their full and absolute potential.

Knowledge management in a major construction firm in Tawian: a case study-examining the impacts of KM initiatives within the firm.

This paper addresses knowledge management (KM) in a project management organisation through a case study. The case study organisation is a small- edium sized Taiwanese-owned construction company (staff size of approximately 50) with an annual turnover of approximately TWD50 (AUD$1.85) billion. Approximately one half of the company comprised project-related staff (e.g. construction project management, project documentation, estimation, procurement, and design), while the other comprised administrative and business-related staff (e.g. office administration and management, business development, and finance and accounting). The researcher undertook a series of surveys and one-on-one interviews whilst ‘embedded’ for several months with the organisation. As part of a larger research project, this case study was one of four case studies conducted in major construction organisations in Singapore, Taiwan, and Australia. The study revealed the recognition, importance and commitment of organisational culture to KM, and the effects the knowledge management initiatives have on the organisation’s ability to manage knowledge across its projects and deliver the projects at various ‘levels’ of the organisation (individual, project, departmental, and corporate). It concludes that a technologically and functionally sound KM infrastructure does not necessarily assure an organisation with a capability to manage knowledge. Organisations need to ensure that the KM repository is made up of quality and relevant contents (not just quantity), and that corporate culture (especially the willingness of individuals to share what they know) is a critical determining factor to the organisation’s ability to share, apply and create knowledge (i.e. low sharing capability leads to low application and creation capabilities).

Assessment in experiential learning : the case of a public policy internship

Assessment is a significant issue for learning in the workplace. In some professions there are key indicators of success shared by workplace and academic supervisors alike. Beyond specific professions, however, assessment becomes more diffuse in workplaces that do not have explicit criteria established to judge performance of students in experiential learning. Assessing learning in these workplaces may be associated with methods that rely more upon student self appraisal and workplace supervisor reports. This article reports on the approach used for assessment in a public policy internship program in one Australian university - Deakin University in Victoria. The article argues that assessment, rather than being an add-on or a test of pre-ordained information, is central to the process of learning itself. This means that before students embark upon a policy internship they need to build their critical thinking abilities; i.e. a process of purposeful, self- regulatory judgment. Secondly they need to discuss how to negotiate their tasks in different workplaces and how to produce the criteria to be used in their evaluation.

Flexible delivery in the Australian vocational education and training sector: Barrier to success identified in cases studies of four adult learners

Government policy in Australia is increasingly encouraging training organisations in the Vocational Education and Training (VET) sector to adopt flexible delivery approaches, but some researchers are sounding a note of caution. Evidence is emerging that Australian VET learners are not universally ready for flexible delivery, and this is reflected in high attrition rates and low pass rates. The literature on flexible delivery identifies a number of specific factors that can impact on the success of adult learners. However, there seems to be agreement that failure or dropout is not determined by a single factor, but by the interaction of a number of factors that build up over time. To understand these factors, we need to understand the learners - what their participation in education means to them, the context in which they are studying, and the numerous inter-connected factors that contribute to their failure to achieve a successful outcome. This paper discusses four case studies from a research project that followed up a small number of adult learners who enrolled in flexible delivery VET courses but did not achieve a successful outcome.

Stakeholders and strategic planning in non-profit organisations : case studies in complexity and conflict

The experiences of two Australian non-profit member-benefit associations as they attempt to develop strategic plans are explored, with emphasis on the influence of the many stakeholders in this process. We conclude that
corporate strategic planning is a complex, conflict-ridden, and largely
unsuccessful process in non-profit member-benefit associations because of the number and commitment of stakeholders. Therefore we suggest that future research should focus on clarifying whether such corporate management techniques are actually appropriate for all non-profit organisations, and, if they are, how non-profit organisations can best manage the process, taking into account the values and needs of stakeholders.