Many-body dissipative particle dynamics simulation of wetting phenomena

With the development of the simulation of particle dynamics, the traditional dissipative particle dynamics (DPD) method can not satisfy the needs of research in static or dynamic wetting phenomena. However, the Many-body DPD approach extends the ability of the traditional method to simulate the interface between solid and liquid or some other situation. In this paper, we propose a Many-body DPD program to simulate the solid-liquid interface and get satisfactory results.

Body parts segmentation with attached props using RGB-D imaging

People detection is essential in a lot of different systems. Many applications nowadays tend to require people detection to achieve certain tasks. These applications come under many disciplines, such as robotics, ergonomics, biomechanics, gaming and automotive industries. This wide range of applications makes human body detection an active area of research. With the release of depth sensors or RGB-D cameras such as Micosoft Kinect, this area of research became more active, specially with their affordable price. Human body detection requires the adaptation of many scenarios and situations. Various conditions such as occlusions, background cluttering and props attached to the human body require training on custom built datasets. In this paper we present an approach to prepare training datasets to detect and track human body with attached props. The proposed approach uses rigid body physics simulation to create and animate different props attached to the human body. Three scenarios are implemented. In the first scenario the prop is closely attached to the human body, such as a person carrying a backpack. In the second scenario, the prop is slightly attached to the human body, such as a person carrying a briefcase. In the third scenario the prop is not attached to the human body, such as a person dragging a trolley bag. Our approach gives results with accuracy of 93% in identifying both the human body parts and the attached prop in all the three scenarios.

Nearshore-offshore-basin species diversity and body size variation patterns in Late Permian (Changhsingian) brachiopods

 B.V. Body size is a fundamental and defining character of an organism, and its variation in space and time is generally considered to be a function of its biology and interactions with its living environment. A great deal of body size related ecological and evolutionary research has been undertaken, mostly in relation to extant animals. Among the many body size-related hypotheses proposed and tested, the size-bathymetry relationship is probably the least studied. In this study, we compiled a global body size dataset of Changhsingian (Late Permian, ca. 254. Ma-252. Ma) brachiopod species from low-latitude areas (30°S-30°N) and analyzed their species diversity and body size distribution patterns in relation to the nearshore-offshore-basin bathymetric gradient. The dataset contained 1768 brachiopod specimens in 435 species referred to 159 genera and 9 orders, from 135 occurrences (localities) of 18 different palaeogeographic regions. Treating the whole of the Changhsingian Stage as a single time slice, we divided the nearshore-offshore-basin bathymetric gradient into three broad depth-related environments: nearshore, offshore and basinal environments, and compared how the species diversity and body size varied along this large-scale bathymetric gradient.Here, we report an array of complex patterns. First, we found a clear overall inverse correlation between species diversity and water depth along the nearshore-offshore-basin gradient, with most species concentrating in the nearshore environment. Second, when the median sizes of all low-latitude brachiopod species from the three environments were compared, we found that there was no significant size difference between the nearshore and offshore environments, suggesting that neither the wave base nor the hydrostatic pressure exerts a critical influence on the body size of brachiopods. On the other hand, the median sizes of brachiopods from the nearshore environment and, to a lesser extent, the offshore environment were found to be significantly larger than that of basinal brachiopods. This trend of significant size reduction in basinal brachiopods mirrors the relative low species diversity in the basinal environment, and neither can be easily explained by the tendency of decreasing food availability towards deeper sea environments. Rather, both trends are consistent with the hypothesis of an expanding Oxygen Minimum Zone (OMZ) in the bathyal (slope to deepsea) environments, where hypoxic to anoxic conditions are considered to have severely restricted the diversification of benthos and favored the relative proliferation of small-sized brachiopods. Finally, a significant difference was also found between eurybathic and stenobathic species in their body size response to the nearshore-offshore-basin gradient, in that eurybathic species (species found in all three environments) did not tend to change their body size significantly according to depth, whereas stenobathic forms (species restricted to a single environment) exhibit a decline in body size towards the basinal environment. This pattern is interpreted to suggest that bathymetrically more tolerant species are less sensitive to depth control with respect to their body size change dynamics, in contrast to stenobathic species which tend to grow larger in shallower water depths.

Body mass index and parent-reported self-estem in elementary school children: evidence for a causal relationship.

OBJECTIVE: To clarify relationships between body mass index (BMI) and self-esteem in young children at a population level. To assess whether low self-esteem precedes or follows development of overweight/obesity in children. DESIGN: Prospective cohort study in elementary schools throughout Victoria, Australia. Child BMI and self-esteem were measured in 1997 and 2000. SUBJECTS: Random sample of 1,157 children who were in the first 4 y of elementary school (aged 5-10 y) at baseline. MEASURES: BMI was calculated from measured height and weight, then transformed to z-scores. Children were classified as nonoverweight, overweight or obese based on international cut-points. Low child self-esteem was defined as a score below the 15th percentile on the self-esteem subscale of the parent-reported Child Health Questionnaire. RESULTS: Overweight/obese children had lower median self-esteem scores than nonoverweight children at both timepoints, especially at follow-up. After accounting for baseline self-esteem, higher baseline BMI z-score predicted poorer self-esteem at follow-up (P=0.008). After accounting for baseline BMI z-score, poorer baseline self-esteem did not predict higher BMI z-score at follow-up. While nonoverweight children with low baseline self-esteem were more likely to develop overweight/obesity (OR=2.1, 95% CI=1.2, 3.6), this accounted for only a small proportion of the incidence of overweight. CONCLUSIONS: Our data show an increasingly strong association between lower self-esteem and higher body mass across the elementary school years. Overweight/obesity precedes low self-esteem in many children, suggesting a causal relationship. This indicates that prevention and management strategies for childhood overweight/obesity need to begin early to minimise the impact on self-esteem.

Relationship between body image and social and sexual functioning: gender and development trends

The purpose of this study was to examine the relationship between body image and social and sexual functioning. The respondents were 426 men and women from metropolitan and rural Victoria, who ranged in age from 18 to 86 years (mean age = 42.26). Respondents completed measures of attractiveness, body satisfaction, body image importance, body image behaviours, appearance comparison, social physique anxiety, self-esteem, depression, anxiety, and social and sexual functioning. Regression analyses were used to detelmine the prediction of social and sexual functioning by body image variables for men and women of different age groups, beyond the effects of psychological adjustment. The results demonstrated that while there were moderate correlations between body image and sociallsexual functioning variables, many of these relationships were best explained by the shared variance of self-esteem. There were some exceptions, particularly among middle-aged men, which are discussed.

The body, mind and soul of AFL footballers: tales of identity from the global sports entertainment industry

The paper discusses some of the findings of a research project funded by the Australian Football League (AFL) titled: Getting the Balance Right: Professionalism, Performance, Prudentialism and Playstations in the Life of AFL Footballers. The research explored the emergence and evolution of a professional identity for AFL footballers – an identity that has many facets including the ideas that a professional leads a balanced life, and has a prudent orientation to the future, to life after football. The AFL is a high profile, sports entertainment business in which brand relationships between the industry and its sponsors generate substantial income for the League, for Clubs, and for Coaches and players. In addition the AFL’s equalisation policies tightly regulate the ways in which Clubs can recruit, maintain and develop playing lists. In this context various tools of analysis are used to identify and characterise the particular Body, Mind and Soul elements of the young men who might be recruited to a Club; who might have significant time, money and effort invested in their development (as players, as persons); who might develop an identity as an AFL footballer. Drawing on Foucault’s work on the care of the self we argue that in this situation, narratives of identity necessarily involve a struggle for the Body, Mind and Soul of these young men.

The life cycle of the AFL footballer : If you sell your body, mind and soul what is left when the cheering stops?

In this paper we will draw on research conducted for the AFL which, in part, illuminated aspects of the Faustian pact that many young men enter into in order to become an elite level, professional footballer in what is increasingly a global sports entertainment industry. In order to develop an identity as an AFL footballer these young men willingly sell their body, mind and soul to one club, or to many. For varying lengths of time these pacts can have significant payoffs - in terms of a sense of self, and in monetary terms. For many though, these payoffs are limited and must be accounted for sometime in the future - an accounting that in Faustian terms, can carry significant costs to the body, mind and soul long after the cheering has stopped, and when the benefits come mainly in the form of memories. In this paper we argue that elements of these pacts can be identified and analysed via the following: understanding AFL as a sports entertainment business; using Foucault's work on the care of the self to explore what it means to be an elite level professional and the demands made by others on the body, mind and soul of players; and the idea that a career as an elite level professional footballer has a number of phases (early, mid and late) in which the nature of a professional identity - shaped by different demands on the body, mind and soul- changes.

A comparison of the socio-cultural influences on body size perceptions and values among European Australian and Indigenous Fijian adolescent girls

Western women are experiencing increases in the prevalence of overweight and obesity despite valuing slimness as ideal and equating thinness with attractiveness and beauty. Pacific populations are also experiencing high prevalence rates of overweight and obesity. A lage body size, however, has many positive connotations among pacific populations that stem from rich cultural practices such as feasts and deliberate fattening of women. There appears to be many sociocultural factors however, such as images of the slim ideal portrayed in Western media, influencing body image concerns that are shared between the two groups. A qualitative study involving semi-structured interviews was conducted to examine and compare the sociocultural influences on body size perceptionsand values. Participants include 16 European Australian and 16 Indigenous Fijian adolescent girls aged between 15 and 17 years. Inductive thematic analysis and analytical induction were qualitativemethods employed to facilitate interpretation of the findings. Preliminary findings suggest that Fijian adolescent girls experience greater conflict than European Australian girls about the desired body size endorsed in their community. Results also suggest that Indigenous Fijian girls place less importance than Australian girls on manipulating their body to achieve a specific ideal. Specific results of this study are reviewed and recommendations for future research are discussed.

'Just bloody fat!' : a qualitative study of body image, self esteem and coping in obese adults

The rise of the ‘obesity epidemic’ in Western societies has led to an increased public gaze on obese individuals. Yet there is limited research that explores through qualitative methods the increased impact it has had on obese individuals’ perceptions of self, body image and coping strategies, using their own words. This paper presents the findings of interviews with a community sample of 142 obese adults in Australia. We examined how obese individuals felt about themselves and their bodies, what influenced these feelings, and the subsequent coping strategies employed. While participants were able to identify many positive characteristics about their inner self, the vast majority used negative language to describe their physical appearance. Many participants described feelings of ‘guilt’, ‘shame’ and ‘blame’ associated with their weight. Coping strategies included striving for perfection in other areas of their life, social isolation, maximising aspects of their appearance and ‘fat’ acceptance. This study shows that, while different groups of obese adults experience, cope with and compensate for the influence of weight-based stereotyping in many different ways, they still feel an unrelenting otherness and difference associated with their weight.

Physics practicals for distance education in an undergraduate engineering course

BACKGROUND : Providing engineering practicals to undergraduates by means of distance education is a significant challenge. The past 30 years have seen the rapid development of the distance education. For many years, Deakin University has offered a full Bachelor of Engineering degree programme via distance education. All first-year students study a unit in physics. This unit includes practicals. Providing practical experiences to students is distance education’s greatest challenge.

PURPOSE : The purpose of this work was to develop the means for off-campus students to complete practical exercises in first-year engineering physics. The solution to the problem also had to comply with accreditation requirements set by Engineers Australia.

METHOD : The long-term solution to the problem was running on-campus lab classes either on weekends or as part of the annual first-year residential school for engineering professional practice. Students work was assessed by means of standard laboratory reports. On-campus marks and off-campus lab marks have been collected and compared over the past 12 years.

RESULTS : The results indicate that the off-campus lab experience is similar to the on-campus experience. Marks for the two cohorts were comparable. Those few students who completed their pracs at home faced and overcame significant challenges.

CONCLUSIONS : We found that performance in their lab reports for off-campus students was similar to that of the on-campus students. Accreditation requirements has shifted the focus from developing activities that students could perform at home to offering timely and efficient on-campus lab classes for off-campus students. Future work will focus on on-campus lab classes in accordance with accreditation requirements and perhaps on-line broadcasts of prac classes for those students who cannot attend lab on-campus.

Learning architecture through ideas about the spatial body

There are many varied ways that the human body is referred to in the thinking about architecture. However, rethinking about the body in other disciplines has meant that some of the binary theories within architecture have needed to be reviewed. The spatial body is a particular conceptualisation of the body that brings a focus onto space within architecture, and proposes that rethinking space through the body produces different and new ideas of spatiality. This paper examines body-architecture relations and how they might be revised in order that a spatial body is conceptualised. While this idea of the spatial body has been theorised through research, it can also be explored through creative practices and teaching. The theory is extended by a presentation of a studio programme that tried to develop exploration of architectural space through the idea of the spatial body.

Body image among older adults

Body image in older adults reflects years of physical, social, and psychological changes within a cultural context. In a youth-focused society, where development is perceived to give in to decline at the first sign of wrinkles and graying hair, the complexity of the construct thickens. This article provides a discussion of body image concerns as they pertain to the aging body, and some of the challenges older adults face in coming to terms with changes that occur. One of the major challenges identified is retaining a positive sense of self through those changes, many of which are treated with disdain by younger and older adults alike. This discussion is grounded in theory and research focusing on biopsychosocial factors relevant to body image in the latter part of life span development.

Teaching undergraduate physics: changing practices in Australia and Vietnam

The study found that notwithstanding some similarities, the teaching and learning of undergraduate physics in three Vietnamese universities and three Australian universities is significantly different in many aspects of practice. The differences in undergraduate teaching and learning of physics in particular and of other university courses in general arise mainly from differences in education systems, cultures, expectations, the views of quality and knowledge, the state of the respective economies, and the school infrastructures between the two countries.

Returning a dislocated child's body to the scene of a crime

The 'Event' considered here is my 'abduction' as a child by my parents out of the Netherlands as part of the post war European migration to Australia in the 1950s. The migrant exists in many ways in-between cultures and this also holds for the migrant child. This event created a traumatic split in me as an eight year old boy. It was one that occurred to many children of migrants who left Europe post WWII. The migration in turn engaged with an unspoken racist complicity with Australia's 'White Australia Policy'. The 'white' Dutch were a good fit for this migration and thus the focus here applies to both 1950s Australia and the Netherlands. This article deals with how I expressed the two aspects of dislocation and racism made evident by this event through my art in a collaborative exhibition The Unwanted Land (see Figure 1). As this art is primarily visual, I have included a photo gallery of 28 images at the end of this text to reference and support this discussion.

Mind and body: how the health of the body impacts on neuropsychiatry

It has long been established in traditional forms of medicine and in anecdotal knowledge that the health of the body and the mind are inextricably linked. Strong and continually developing evidence now suggests a link between disorders which involve Hypothalamic-Pituitary-Adrenal axis (HPA) dysregulation and the risk of developing psychiatric disease. For instance, adverse or excessive responses to stressful experiences are built into the diagnostic criteria for several psychiatric disorders, including depression and anxiety disorders. Interestingly, peripheral disorders such as metabolic disorders and cardiovascular diseases are also associated with HPA changes. Furthermore, many other systemic disorders associated with a higher incidence of psychiatric disease involve a significant inflammatory component. In fact, inflammatory and endocrine pathways seem to interact in both the periphery and the central nervous system (CNS) to potentiate states of psychiatric dysfunction. This review synthesizes clinical and animal data looking at interactions between peripheral and central factors, developing an understanding at the molecular and cellular level of how processes in the entire body can impact on mental state and psychiatric health.