993 resultados para Nature study.


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31P and 19F solid state NMR have been used to study the nature of the PF6− anion in polypyrrole films at various levels of oxidation. It appears that the symmetric PF6− unit remains undistorted and unchanged throughout, suggesting that it is predominantly acting only as a counterion and not as a true ‘dopant’, since any distortion in the phosphorous environments would result at the very least in chemical shift anisotropy of the 31P nucleus. A second set of phosphorous and fluorine resonances, which are consistent with a difluoride phosphorous compound, appeared in the films. Upon electrochemical reduction of the polymer, the undistorted PF6− anion leaves the film whereas the second phosphorous species remains. Re-oxidation of the polymer reverses the processes observed during reduction.

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It is estimated that half of the world’s population now live in urban environments. Urban living necessitates a removal from nature, yet evidence indicates that contact with nature is beneficial for human health. In fact, everyday urban places, such as where people live, study, and work, provide opportunities to bring nature back into cities to contribute to positive, healthy environments for people and to foster the human–nature connection. The inclusion of more nature in cities could have additional environmental benefits, such as habitat provision and improving the environmental performance of built environments. In the context of climate change, outcomes such as these assume further importance. This article explores how common urban places can foster links between people and nature, and generate positive health and well-being outcomes. We achieve this by exploring nature in the everyday settings of schools and residential housing.

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Objective: The aim of this study was to assess the major dietary patterns of two age cohorts of women, to determine to the extent to which the dietary patterns differ between the cohorts and to assess whether they vary according to sociodemographic and behavioural characteristics and patterns of nutrient intake.

Method:
Dietary intake was assessed using an 80-item food frequency questionnaire for women aged 50–55 years (n=10 150; ‘middle age’) in 2001 and aged 25–30 years (n=7371; ‘young’) in 2003, from the Australian Longitudinal Study on Women's Health. Factor analysis using principal component extraction was used to identify dietary patterns, and a pattern score was calculated from the consumption of the food items identified with each dietary pattern. Associations between the dietary pattern scores and sociodemographic and behavioural characteristics and nutrient intakes were investigated using regression analysis.

Results: Six dietary patterns were identified and were labelled: cooked vegetables; fruit; Mediterranean-style; processed meat, meat and takeaway; reduced fat dairy; and high-fat and sugar foods. Regression analysis revealed that healthier dietary patterns were significantly associated with other favourable health-related behaviours, higher socioeconomic status and living in urban areas (P-values <0.05).

Conclusions:
In spite of differences in the level of consumption of individual food items, the similarity in dietary patterns across two generations of women suggests that policies and interventions to improve diet should focus on social and economic factors and general health-related behaviour rather than different age groups.

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Objective: To determine the independent contributions of family and neighbourhood environments to changes in youth physical activity and body mass index (BMI) z-score over 5 years.

Methods: In 2001, 2004 and 2006, 301 children (10–12 years at baseline) had their height and weight measured (BMI was converted to z-scores using Centers for Disease Control and Prevention reference charts; see http://www.cdc.gov/growthcharts) and moderate-to-vigorous physical activity (MVPA) assessed using accelerometers. In 2001, parents reported on the home environment (social support, role modelling, rules and restrictions, physical environment) and perceived neighbourhood environment (local traffic, road safety, sporting venues, public transport), and Geographic Information Systems were used to map features of the neighbourhood environment (destinations, road connectivity, traffic exposure). Generalized estimating equations were used to predict average BMI z-score and MVPA over time from baseline home and perceived and objective neighbourhood environment factors.

Results: Among boys, maternal education and heavy traffic were inversely associated, and sibling physical activity, maternal role modelling of MVPA and the presence of dead-end roads were positively associated with MVPA. Having unmarried parents, maternal MVPA role modelling and number of home sedentary items were positively associated with BMI z-score among boys. Among girls, having siblings, paternal MVPA role modelling, physical activity rules and parental physical activity co-participation were positively associated with MVPA. Having unmarried parents and maternal sedentary behaviour role modelling were positively associated, and number of sedentary behaviour rules and physical activity items were inversely associated with BMI z-score among girls.

Conclusion: The home environment seems more important than the neighbourhood environment in influencing children's physical activity and BMI z-score over 5 years. Physical activity and weight gain programmes among youth should focus on parental role modelling, rules around sedentary and active pursuits, and parental support for physical activity. Intervention studies to investigate these strategies are warranted.

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What I have called the Ideal of Cultivation is a fundamental ethical principle of civilisation, originated by aristocratic warriors in Greek antiquity who held that the true purpose of humanity is to perfect nature

It was then professed that individuals and even entire peoples could consciously develop and improve themselves in a way that was thought to obey the original lawful impulses of nature, a process which was likened to those of agriculture and animal husbandry.

Subsequently the cognate idea of a politics of cultivation arose which deemed that society should be organised specifically to produce more virtuous or perfect human types. Given their fundamental association with Hellenism both ideas have been revisited constantly in the intellectual history of the west, and most notably during the great secular periods, the Renaissance and Enlightenment when active attempts were made to retrieve the ideals of antiquity. Both ideas were particularly pervasive in the German enlightenment, the Aufklärung, and were assimilated by the succeeding Romantic generation.

In nineteenth century Germany, when interest in these ideas was quickly waning, the German philosopher Friedrich Nietzsche acquired an unswerving attachment to them and made the service of them his life's work.

The intention of this essay is to trace methodically the appearance of the Ideal of Cultivation in Nietzsche's philosophy and politics, and to outline his responses to a world which was abandoning the principles in which he deeply believed. This essay should be regarded as a case study in the long history of a fundamental ethical idea rather than one about the philosopher Nietzsche.

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The Bangladesh Bank is now encouraging corporate social responsibility (CSR) disclosure by banks however the adoption of CSR remains voluntary and not mandatory. The aim in this paper is to determine the nature and extent of corporate social responsibility disclosure in the banking sector in Bangladesh, and to assess the need to improve corporate social responsibility by such organisations. We observe, from our content analysis of the annual reports of three cases studies within the banking industry of Bangladesh, that corporate social responsibility disclosures focus on initiatives undertaken to support two critical two sectors within Bangladesh's economy. agriculture and the SME sector. Further disclosures address contributions and donations made by the banks to support underprivileged sections of Bangladesh society including destitute youth and women. Of the three cases examined in this study, two are relatively new entrants to the banking sector. We observed that the newest firm, incorporated in 1999, made no disclosures in regards to its corporate social responsibility and, as a consequence, conclude that the corporate governance mechanisms in this firm are likely to be unsophisticated.

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In response to recent criticisms of business and accounting education, a team of educators introduced a new course in social and critical perspectives on accounting. The course sought to integrate sociological concepts into the study of accounting, with key themes of social construction and social power forming a core of the course. The express intention was to raise student awareness of the nature and functions of accounting in contemporary society. The core teaching strategy involved team teaching, which was used to enhance learning and develop higher order generic skills. Feedback from two diverse cohorts of students vindicated the approach undertaken and reinforced the importance of linking teaching and research in accounting programs. Change in accounting education can be directed towards regaining and rebuilding social relevance for a discipline too often associated with a narrow economic imperative rather than the broader public interest.

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Background: Childhood overweight and obesity is the most prevalent and, arguably, politically complex child health problem internationally. Governments, communities and industry have important roles to play, and are increasingly expected to deliver an evidence-informed system-wide prevention program. However, efforts are impeded by a lack of organisational access to and use of research evidence. This study aims to identify feasible, acceptable and ideally, effective knowledge translation (KT) strategies to increase evidence-informed decision making in local governments, within the context of childhood obesity prevention as a national policy priority.
Methods/Design: This paper describes the methods for KT4LG, a cluster randomised controlled trial which is exploratory in nature, given the limited evidence base and methodological advances. KT4LG aims to examine a program of KT strategies to increase the use of research evidence in informing public health decisions in local governments. KT4LG will also assess the feasibility and acceptability of the intervention. The intervention program comprises a facilitated program of evidence awareness, access to tailored research evidence, critical appraisal skills development, networking and evidence summaries and will be compared to provision of evidence summaries alone in the control program. 28 local governments were randomised to intervention or control, using computer generated numbers, stratified by budget tertile (high, medium or low). Questionnaires will be used to measure impact, costs, and outcomes, and key informant interviews will be used to examine processes, feasibility, and experiences. Policy tracer studies will be included to examine impact of intervention on policies within relevant government policy documents.
Discussion: Knowledge translation intervention studies with a focus on public health and prevention are very few in number. Thus, this study will provide essential data on the experience of program implementation and evaluation of a system-integrated intervention program employed within the local government public health context. Standardised programs of system, organisational and individual KT strategies have not been described or rigorously evaluated. As such, the findings will make a significant contribution to understanding whether a facilitated program of KT strategies hold promise for facilitating evidence-informed public health decision making within complex multisectoral government organisations.

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Vernacular dwelling buildings located in hot arid regions are well known for their sensitive architecture response to the region’s climatic conditions and the socio-cultural norms. The architectural value of these buildings is not only limited to their historical merit, but also to the human conscious adaptation to its context and the optimum utilisation of natural resources creating both a pleasant and a functional environment. The majority of these traditional dwellings are well recognised for their unique perforated fenestration system and courtyard arrangement that evolved to control the harsh solar, climatic conditions without compromising the quality of space and occupants’ wellbeing. However, the successful design of these features and solutions cannot be fully appreciated without understanding the nature of daylight and solar radiation in which these buildings are revealed. This paper investigates the impact of the characteristic of the dense narrow streets of medieval cities on the visual performance of a typical courtyard house in Cairo.The paper examines the daylight  behaviour of one of the well-known historic alleys and of a courtyard house in Cairo. The paper analyzes and measures the variability in the visual perception and comfort for a typical pedestrian street and the occupants of the house using a simulation modelling tool (Integrated Environmental Solutions (IES) software). The paper gives an insight into the overall visual performance of the urban fabric that shapes of the microclimate, which is an important ingredient of the overall identity of the place.

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In this paper, we discuss a special case of knowledge creation via pattern mining that was studied using a hermeneutic approach. The reported study explores the nature of knowledge creation by domain practitioners who do not communicate directly. The focus of this paper extends the traditional view of a knowledge creation process beyond organisational boundaries. The proposed knowledge creation framework explains the facilitated process of knowledge creation by its qualification, combination, socialisation, externalisation, internalisation and introspection, thus allowing the transformation of individual experience and knowledge into formalised shareable domain knowledge.

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Semi-structured interviews eliciting cognitions and motivations were carried out with 15 incarcerated female child sexual abusers (nearly 50% of the current UK female sexual offender prison population). Qualitative analysis indicated that four of the five motivational schemas (implicit theories) suggested by Ward (Ward, 2000; Ward & Keenan, 1999) to underlie male sexual offenders' cognitions could be clearly identified in women, these were: Uncontrollability (UN, identified in 87% of participants), Dangerous world (DW, 53%), Children as sexual objects (CSO, 47%) and Nature of harm (NH, 20%). Entitlement, the final implicit theory (IT), commonly found in males, was not identified in any participants in the sample. Further analysis indicated that there were four main motivational types of offender based on combinations of these ITs. These were: (1) presence of DW/CSO, indicating sexual motivation and cognitions with fear of violence; (2) presence of DW/no CSO, indicating fear of violence with no sexual cognition or motivation; (3) presence of CSO/no DW, indicating sexual motivation and cognition; the NH IT also strongly featured in this group; and (4) presence of UN/no DW or CSO, indicating lack of control, sometimes with sense of protection for the victim. Suggestions are made on how the results can inform theoretical developments in the field as well as policy and practice.

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The hypothesis that child sexual offenders (CSOs) hold distorted, offence-supportive beliefs is usually investigated using interview and questionnaire techniques. However, in light of various problems associated with the use of these techniques, researchers are increasingly turning to cognitive-experimental approaches. To date, no study has examined potential differences in the nature of the beliefs that are revealed using interview, questionnaire, and experimental methods. In this study, data is gathered using these three methods and the results triangulated. CSOs are interviewed and the content categorised into five belief types. CSOs and offender controls then complete a questionnaire measure of offence-supportive beliefs and an experimental task (Rapid Serial Visual Presentation-Modified, or RSVP-M), which uses sentence reading times to explore content held in cognitive structures. As hypothesised, CSOs showed evidence of holding distorted beliefs according to the interview and questionnaire measures. Against predictions, however, CSOs did not show evidence of holding distorted belief structures on the RSVP-M task. In fact, the three methods showed no agreement regarding the belief types each CSO was deemed to hold. These results raise important questions about the phenomena and potential artefacts measured by each method.

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Qualitative analysis of interviews with 22 child abusers found strong evidence for Ward and Keenan's (1999) proposal that there are five implicit theories in child abusers that account for the majority of their cognitive distortions/thinking errors. These implicit theories are: Child as a sexual being where children are perceived as being able to and wanting to engage in sexual activity with adults and also are not be harmed by such sexual contact; Nature of harm where the offender perceives that sexual activity does not cause harm (and may in fact be beneficial) to the child; Entitlement where the child abuser perceives that he is superior and more important than others: and hence is able to have sex with whoever, and whenever, he wants; Dangerous world where the offender perceives that that others are abusive and rejecting and he must fight to regain control; and Uncontrollable where the offender perceives the world as uncontrollable and hence he believes that circumstances are outside of his control. There was no evidence for any other type of implicit theory. Results of the study also indicated that there was a significant difference in terms of the endorsement of the Dangerous world implicit theory between participants reporting a history of child sexual abuse and those who did not. Offenders against male victims were significantly more likely to endorse the Child as a sexual being and Dangerous world implicit theories compared to men who had offended against female children.

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Background The aim of this study was to examine reported incidents affecting Emergency Department (ED) episodes of care.
Methods A retrospective audit of ED patients was carried out in an urban district hospital in Melbourne, Australia from 1 January 2008 to 31 December 2008. The main outcome measure was presence or absence of reported patient-related incident(s) during ED care.
Results There were 984 patient-related incidents (n¼984) during 2008.The most common incidents were related to patient behaviour (66.4%), patient management (10.1%) and medications (6.5%). Patients whose ED care involved reported incident(s) were older, had higher triage categories, longer length of ED stay and were more likely to need hospital admission or leave at their own risk. Eighteen per cent of reported incidents occurred in patients aged 65 years and over. Incidents affecting older patients were more likely to be related to breach of skin integrity, patient management, diagnosis and patient identification, and less likely to involve patient behaviour.
Conclusions Reported incident(s) occurred in 0.47% of ED episodes of care. Differences in personal and clinical characteristics of patients whose ED care involved reported incident(s) highlights the need for better understanding of incidents occurring in the ED in order to improve systems for high-risk patients.

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An underlying assumption within person-organisation fit research has been that misfit and fit are opposite ends of a spectrum. However, little research has been conducted into the nature of misfit. This paper outlines a qualitative study to identify firstly, what causes employees to fit or misfit and secondly, whether these states are polar opposites or different constructs. The findings suggest that fit and misfit are categorical constructs as they are caused by different factors and impetuses. Although organisational factors caused both fit and misfit, supervisors appear instrumental in causing misfit perceptions and job factors seem closely aligned to fit perceptions.