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Current Thinking (current + thinking)
Selected AbstractsPERSPECTIVE: Rethinking the value of high wood densityFUNCTIONAL ECOLOGY, Issue 4 2010Markku Larjavaara Summary 1.,Current thinking holds that wood density mediates a tradeoff between strength and economy of construction, with higher wood density providing higher strength but at higher cost. 2.,Yet the further away wood fibres are from the central axis of the trunk, the more they increase the strength of the trunk; thus, a fat trunk of low-density wood can achieve greater strength at lower construction cost than a thin trunk of high-density wood. 3.,What then are the countervailing advantages of high wood density? 4.,We hypothesize that high wood density is associated with lower maintenance costs due to lower trunk surface area, as surface area correlates with maintenance respiration. 5.,This advantage would be particularly important to long-lived trees and could in part explain why they tend to have high wood density. 6.,High wood density has also been associated with lower risk of trunk breakage, xylem implosion and pathogen invasion, but we argue that these relationships are not causal and instead reflect correlated selection on other traits of value to long-lived trees. 7.,This revaluation of the costs and benefits of high wood density has important implications for understanding tree life-history evolution, functional diversity, forest carbon stocks and the impacts of global change. [source] Protecting the Old in a Young Economy: Old Age Insurance in the West Bank and Gaza StripINTERNATIONAL SOCIAL SECURITY REVIEW, Issue 3 2000Markus Loewe Taking the West Bank and Gaza Strip as a reference point, this paper looks at social protection in developing economies, which are beset by economic stagnation, widespread poverty and unemployment. If the main breadwinner dies, is unable to work or is an older person, these factors are prime causes of absolute poverty. This is hardly surprising, since private and public systems of social security are totally inadequate in this area in particular. Current thinking on social security suggests that what is needed is the rapid introduction of a comprehensive system of retirement provision, comprising a mandatory capital-funded insurance component, with defined contributions, administered on a decentralized basis; and a state-administered pay-as-you-go basic insurance component with lump-sum transfers to safeguard the poorest. A system of this kind works to prevent poverty in old age by redistributing funds from some individuals to others and ensuring an income for life, and it represents a compromise between a fair return on what people have contributed and a fair distribution over society as a whole. It is thus a major force for stability in society. [source] A Psychoeducational Group for Men with Intellectual Disabilities Who Have Sex with MenJOURNAL OF APPLIED RESEARCH IN INTELLECTUAL DISABILITIES, Issue 4 2001Paul Withers The sexuality and sexual behaviour of people with intellectual disabilities (IDs) is one of the most complex and unresolved issues faced by service providers. Despite much evidence suggesting the disproportionately high risks faced by men with IDs who have sex with men, no epidemiological research has been conducted on the prevalence of HIV within this population. Current thinking suggests that self-help groups are efficacious in helping participants to develop positive sexual identities and to share information about safer sexual practices. The present study is a qualitative evaluation of a pilot support group for men with IDs who have sex with men. Themes relating to the formation of sexual identity and safety issues were extrapolated using content analysis from a transcript of the final group session. The implications for service delivery are discussed. The evaluation was conducted by a clinical psychologist external to the group and the members of the group. [source] A Multivariate Contextual Analysis of Torture and Cruel, Inhuman, and Degrading Treatments: Implications for an Evidence-Based Definition of TortureAMERICAN JOURNAL OF ORTHOPSYCHIATRY, Issue 2 2009Metin Ba, lu MD Current thinking on what constitutes torture in a detention/interrogation setting focuses solely on particular procedures, without regard for contextual factors that mediate traumatic stress. The present study examined stressor interactions that determined severity and psychological impact of captivity stressors in 432 torture survivors in former Yugoslavia countries and Turkey. A principal components analysis of 46 captivity stressors measured by an Exposure to Torture Scale identified meaningful stressor clusters, which suggested that multiple detention procedures were used in combination to maximize their impact. Perceived torture severity related to ,cruel, inhuman, and degrading' treatments (CIDT) but not to physical torture. Posttraumatic stress disorder related to war-related captivity, deprivation of basic needs, sexual torture, and exposure to extreme temperatures, isolation, and forced stress positions but not to physical torture. CIDT increased posttraumatic stress disorder risk by 71%. Fear- and helplessness-inducing effects of captivity and CIDT appear to be the major determinants of perceived severity of torture and psychological damage in detainees. Considerations on what constitutes torture need to take into account the contextual processes in a captivity setting that mediate these effects. [source] Antipsychotic-induced weight gainDIABETES OBESITY & METABOLISM, Issue 5 2005A. J. Goudie Abstract:, Novel ,atypical' antipsychotic drugs represent a substantial improvement on older ,typical' drugs. However, clinical experience has shown that some, but not all, of these drugs can induce substantial weight gain. This interferes with compliance with drug taking and has expected effects on morbidity and mortality. In this review, we summarize current thinking on: (i) the extent to which different ,atypical' drugs induce weight gain; (ii) the possible roles of various neurotransmitters and neuropeptides in this adverse drug reaction; and (iii) the state of development of animal models in this area. We also outline major areas for future research. [source] MATTER(S) OF INTEREST: ARTEFACTS, SPACING AND TIMINGGEOGRAFISKA ANNALER SERIES B: HUMAN GEOGRAPHY, Issue 1 2007Tim Schwanen ABSTRACT. This paper argues that time-geography can make a contribution to contemporary ,rematerialized' geographies, because the interconnections among social processes, human corporeality and inanimate material artefacts within the landscape were among Hägerstrand's central concerns. Time-geography needs none the less to be extended in several ways to make it more reconcilable with current thinking about materiality in geography. The possibility of combining Hägerstrand's framework with notions from (post) actor-network approaches is therefore explored. It is suggested that concepts and notions from the latter may contribute to the advancement of the conceptualization of action at a distance and agency in general in time-geography, as well as the incorporation of the immaterial realm into space,time diagrams. The resulting materially heterogeneous time-geography is a framework for studying the spacing and timing of different material entities that is sensitive to the role of artefacts and their local connectedness with other material forms. Some of its elements are illustrated briefly through an empirical study of the roles played by a few mundane artefacts in working parents ,coping with child-care responsibilities on working days. The case study suggest that these artefacts not only enable goal fulfilment and routinization but also result in further spacing and timing practices, and can introduce uncertainty and novelty to existing orders. [source] Performance measurement in industrial R&DINTERNATIONAL JOURNAL OF MANAGEMENT REVIEWS, Issue 2 2000Inge Kerssens-van Drongelen Currently, the need for R&D performance measurements that are both practically useful and theoretically sound seems to be generally acknowledged; indeed, the rising cost of R&D, greater emphasis on value management and a trend towards decentralization are escalating the need for ways of evaluating the contribution of R&D to corporate performance. However, although recent research and writing on the subject shows that the challenge of developing such sound measurements has been taken up by many academics and organizations, it is also clear that there is no generally applicable approach. In this review, we consider various approaches for measuring the performance in industrial R&D and identify their key characteristics. We also include a brief summary of the ,history' of performance measurement in R&D, which shows that although there are some new ways of looking at the issue there are many examples from the past that can contribute to our current thinking. The approaches found in the literature and practice are very varied in their application, some being more suitable for the project level, others for the R&D department, and some for the development process or for the organization as a whole. Furthermore, the uses of the approaches tend to be different. For example, some approaches are intended to justify the continuation of investment in R&D to upper management, whilst others are more suited to support learning and self-correction by empowered R&D teams. In this paper these uses, or ,functions', of performance measurement and a taxonomy of typical subjects of measurement in R&D environments are explored. Finally, we conclude the review with a discussion of some limitations of the growing literature on R&D performance measurement. [source] Creative marketing and the art organisation: what can the artist offer?INTERNATIONAL JOURNAL OF NONPROFIT & VOLUNTARY SECTOR MARKETING, Issue 2 2002Ian Fillis The poem ,My Paintings', written in a deliberate, uncorrected dyslexic style offers an insight into the mind of a present day avant garde bad boy of British art, Billy Childish. Constantly challenging the art establishment through public demonstrations of distaste against the annual Turner Prize,[Button, V. (1999) ,The Turner Prize', Tate Gallery Publishing, London.] Childish and his cohorts launched an alternative, Stuck-ist, art manifesto,[Alberge, D. (1999) ,Rebels Get Stuck into the Brit Artists', The Times, Thursday 26th August, p. 7.] in the belief that it would assist in a shift in public perception of what good art is, as well as influence the creative practice of those artists concerned with more traditional, authentic forms of art. Childish's ex-girlfriend Tracey Emin, however, has had other ideas. She has revelled in mass media exposure and now dismisses the concept of traditional painting as a valid art from.[Brown, N. (1998) ,Tracey Emin', Art Data, UK.] These are two examples of contrasting creative, artistic behaviour. Their creativity has resulted in varying levels of commercial success. By examining the role that creativity plays in determining how the idea for a creative product is first identified, through to its commercial exploitation, there are valuable lessons contained in such a process for both profit-oriented and nonprofit art organisations alike. Instead of constantly fighting the conflicting philosophies of art for art's sake versus art for business sake, following the market and consumer demand, there is a much more effective method for establishing longer-term success, which mirrors the creative practice of the artist. The existing literature on arts marketing is examined. A critique of the usefulness of current thinking is presented, with the recommendation that the formal models of marketing offered in arts marketing literatures can only ever hope to offer general advice on marketing. What is called for is a much more in-depth analysis of how creative entrepreneurial marketers as artists can offer alternative visualisations of more appropriate models of marketing for the industry. This in turn should result in the stimulation of creative research methodologies that can inform both theory and practice within arts marketing in particular, and the wider remit of marketing in general. The use of the metaphor and the examination of published biographies of creative individuals are used to construct a manifesto of marketing artistry. Copyright © 2002 Henry Stewart Publications [source] CREATING VALUE IN THE OIL INDUSTRYJOURNAL OF APPLIED CORPORATE FINANCE, Issue 1 2004Nick Antill In contrast with current thinking that conglomerates are inefficient, this article begins by presenting arguments in favor of the size and structure of the large integrated oil companies, also known as "the supermajors." Among the advantages are tax efficiency, information flow, political and technological know-how, broad supplier and customer relationships, scale economies, cross-business economies of scope, brand power, and the ability to coordinate strategic initiatives across businesses. These advantages all translate into a lower cost of capital. One problem, however, is that this lower cost of capital does not seem to be reflected in the target returns on capital currently set by the supermajors. Observing that the financial goal of a corporation is to maximize not its return on capital but rather the net present value of expected future cash flows and earnings, the authors argue that the majors need to make two major changes to current practice. First, their investment hurdle rates should be reduced from their current level of 14,15% to the weighted average cost of capital, which is estimated to run about 8,9%. Second, the actual returns on capital reported in published accounts are largely meaningless; and when evaluating new investments and existing operations alike, the companies must find an annual performance measure that better reflects the economic realities of the business. This paper recommends use of a performance measurement framework based on economic profit that should serve two critical purposes: it will encourage managers to undertake all value-increasing projects (not just those that will maintain or increase reported return on capital), and it will help the companies communicate their strategy and results to the investment community. [source] Genetic services for people with intellectual disability and their familiesJOURNAL OF INTELLECTUAL DISABILITY RESEARCH, Issue 7 2003F. L. Raymond MA DPhil FRCP Abstract This paper reviews the advances in molecular genetics over the recent years and discusses the impact it may have on those with intellectual disability and their families. The aim is not to present a comprehensive scientific treatise but rather to use illustrations from genetics to highlight our current thinking and draw attention to areas of uncertainty and misinformation. As our knowledge and understanding of the genetic basis of disease increases over the years, there may be significant benefits to some families, but the potential for discrimination against individuals on genetic grounds will also increase. [source] Work stress: an exploratory study of the practices and perceptions of female junior healthcare managersJOURNAL OF NURSING MANAGEMENT, Issue 1 2002K. Rodham BSc(HONS) Aim:, This exploratory study set out to investigate the perceptions and practices of junior healthcare managers with regard to stress at work. Background:, It has been suggested that cultural change is needed to accommodate a shift towards recognition of organizational responsibility for stress (Schulz et al. 1985). Logically, it can be argued that junior healthcare managers, as potential future senior managers, are best placed to facilitate this change. Junior healthcare managers' current thinking about stress had not yet been explored in depth. Method:, A combination of critical incident diaries and semistructured interviews was conducted with six junior healthcare managers. The data were analysed and transcribed using a grounded theory approach. Findings:, The main themes to emerge were that junior healthcare managers were generally unaware of (a) potential work stressors and (b) the effect of work stressors on their own health and performance and that of their staff. Conclusions:, The perceptions and practices of junior healthcare managers suggest that there is a culture of acceptance and expectation of work stress, combined with a lack of awareness to effectively and proactively manage it. [source] The Quaternary of the British Isles and adjoining seas,JOURNAL OF QUATERNARY SCIENCE, Issue 4 2010James Rose Abstract This Special Issue of the Journal of Quaternary Science contains a set of 13 papers based on presentations at the Annual Discussion Meeting of the Quaternary Research Association held in London in January 2008. This Special Issue is concerned with four main themes: long-term landscape signatures, river landscapes and responses to climate change, glacial landscapes and Lateglacial landscapes. The papers include substantial new data on the terrestrial and offshore Quaternary of the British Isles and provide a benchmark for aspects of current thinking on this topic. This volume is published in parallel with other special issues based on the 2008 QRA Discussion Meeting. These consist of The Quaternary Geology of the British Isles edited by David Bridgland and Nick Golledge in the Proceedings of the Geologists' Association and Climate variability of the British Isles and surrounding seas edited by Dan Charman and Danny McCarroll in Quaternary Science Reviews. Copyright © 2010 John Wiley & Sons, Ltd. [source] Content specificity: is it the full story?MEDICAL EDUCATION, Issue 6 2008Statistical modelling of a clinical skills examination Objective, This study sought to determine the relative contributions made by transferable skills and content-specific skills to Year 2 medical student performance in a clinical skills examination. Methods, Correlated trait-correlated method models were constructed to describe the performance of 2 year groups of students in examinations held in the summers of 2004 and 2005 at Peninsula Medical School in the UK. The transferable skills components of the models were then removed to indicate the contribution made to the fit of the models to the data. Results, Although content-specific skills made the greater contribution to the 2 models of student performance (accounting for averages of 54% and 43% of the variance, respectively), transferable skills did make an important but smaller contribution (averages of 13% and 16%, respectively). When the transferable skills components of the models were removed, the fit was not as good. Conclusions, Both content-specific skills and transferable skills contributed to performance in the clinical skills examination. This challenges current thinking and has important implications, not just for those involved in clinical skills examinations, but for all medical educators. [source] The Nurse Project: an analysis for nurses to take back our workNURSING INQUIRY, Issue 4 2009Janet M Rankin This paper challenges nurses to join together as a collective in order to facilitate ongoing analysis of the issues that arise for nurses and patients when nursing care is harnessed for health care efficiencies. It is a call for nurses to respond with a collective strategy through which we can ,talk back' and ,act back' to the powerful rationality of current thinking and practices. The paper uses examples from an institutional ethnographic (IE) research project to demonstrate how dominant approaches to understanding nursing position nurses to overlook how we activate practices of reform that reorganize how we nurse. The paper then describes two classroom strategies taken from my work with students in undergraduate and graduate programs. The teaching strategies I describe rely on the theoretical framework that underpin the development of an IE analysis. Taken into the classroom (or into other venues of nursing activism) the tools of IE can be adapted to inform a pedagogical approach that supports nurses to develop an alternate analysis to what is happening in our work. [source] Endurance exercise performance: the physiology of championsTHE JOURNAL OF PHYSIOLOGY, Issue 1 2008Michael J. Joyner Efforts to understand human physiology through the study of champion athletes and record performances have been ongoing for about a century. For endurance sports three main factors , maximal oxygen consumption , the so-called ,lactate threshold' and efficiency (i.e. the oxygen cost to generate a give running speed or cycling power output) , appear to play key roles in endurance performance. and lactate threshold interact to determine the ,performance , which is the oxygen consumption that can be sustained for a given period of time. Efficiency interacts with the performance to establish the speed or power that can be generated at this oxygen consumption. This review focuses on what is currently known about how these factors interact, their utility as predictors of elite performance, and areas where there is relatively less information to guide current thinking. In this context, definitive ideas about the physiological determinants of running and cycling efficiency is relatively lacking in comparison with and the lactate threshold, and there is surprisingly limited and clear information about the genetic factors that might pre-dispose for elite performance. It should also be cautioned that complex motivational and sociological factors also play important roles in who does or does not become a champion and these factors go far beyond simple physiological explanations. Therefore, the performance of elite athletes is likely to defy the types of easy explanations sought by scientific reductionism and remain an important puzzle for those interested in physiological integration well into the future. [source] Social Network Analysis of the Genetic Structure of Pacific IslandersANNALS OF HUMAN GENETICS, Issue 3 2010John Edward Terrell Summary Social network analysis (SNA) is a body of theory and a set of relatively new computer-aided techniques used in the analysis and study of relational data. Recent studies of autosomal markers from over 40 human populations in the south-western Pacific have further documented the remarkable degree of genetic diversity in this part of the world. I report additional analysis using SNA methods contributing new controlled observations on the structuring of genetic diversity among these islanders. These SNA mappings are then compared with model-based network expectations derived from the geographic distances among the same populations. Previous studies found that genetic divergence among island Melanesian populations is organised by island, island size/topography, and position (coastal vs. inland), and that similarities observed correlate only weakly with an isolation-by-distance model. Using SNA methods, however, improves the resolution of among population comparison, and suggests that isolation by distance constrained by social networks together with position (coastal/inland) accounts for much of the population structuring observed. The multilocus data now available is also in accord with current thinking on the impact of major biogeographical transformations on prehistoric colonisation and post-settlement human interaction in Oceania. [source] Prevention of sudden cardiac deathCLINICAL CARDIOLOGY, Issue S1 2005Eric N. Prystowsky M.D. Abstract It is often unclear why some patients suffer sudden cardiac death (SCD), or even what risk factors correlate best with the syndrome. This review describes current thinking on the prevention of SCD. Most studies have focused on the prevention of potentially fatal ventricular arrhythmias in patients post myocardial infarction (MI). While pharmacotherapy has a role in the prevention of SCD in patients post MI, the interpretation of drug trials can be problematic. This is because not all patients participating in such trials received optimized medical therapy by today's standards. As a result, trial outcomes for new therapies may not reflect their true efficacy when they are added to a background of best medical care. The two principal prophylactic modalities for SCD studied to date are antiarrhythmic drug therapy and use of an implantable cardioverter defibrillator (ICD). At the present time, antiarrhythmic drugs, such as the class III agent amiodarone, seem to display relatively limited efficacy for the primary prevention of sudden death in most patients post MI. Most clinical trials have found that ICD therapy has a significant mortality benefit in patients at high risk for ventricular arrhythmias. This has been demonstrated in primary prevention trials, and in secondary prevention trials such as Antiarrhythmics Versus Implantable Defibrillators (AVID), which studied patients who survived a near-fatal ventricular arrhythmia. Based on an analysis of secondary prevention trials, the single patient characteristic that best predicted an advantage of ICD therapy over antiarrhythmic drug therapy was a left ventricular (LV) ejection fraction , 35%. Cardiac resynchronization therapy has been established as having a mortality benefit in patients with dyssynchronous LV contraction associated with dilated cardiomyopathy. [source] | ||||||||||||||||||||||||||||