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Important Work (important + work)
Selected AbstractsCircadian rhythms and the evolution of photoperiodic timing in insectsPHYSIOLOGICAL ENTOMOLOGY, Issue 4 2009DAVID S. SAUNDERS Abstract. This review discusses possible evolutionary trends in insect photoperiodism, mainly from a chronobiological perspective. A crucial step was the forging of a link between the hormones regulating diapause and the systems of biological rhythms, circadian or circannual, which have independently evolved in eukaryotes to synchronize physiology and behaviour to the daily cycles of light and darkness. In many of these responses a central feature is that the circadian system resets to a constant phase at the beginning of the subjective night, and then ,measures' the duration of the next scotophase. In ,external coincidence', one version of such a clock, light now has a dual role. First, it serves to entrain the circadian system to the stream of pulses making up the light/dark cycle and, second, it regulates the nondiapause/diapause switch in development by illuminating/not illuminating a specific light sensitive phase falling at the end of the critical night length. Important work by A. D. Lees on the aphid Megoura viciae using so-called ,night interruption experiments' demonstrates that pulses falling early in the night lead to long-day effects that are reversible by a subsequent dark period longer than the critical night length and also show maximal sensitivity in the blue,green range of the spectrum. Pulses falling in the latter half of the night, however, produce long-day effects that are irreversible by a subsequent long-night and show a spectral sensitivity extending into the red. With movement to higher latitudes, insects develop genetic clines in various parameters, including critical night length, the number of long-night cycles needed for diapause induction, the strength of the response, and the ,depth' or intensity of the diapause thus induced. Evidence for these and other types of photoperiodic response suggests that they provided strong selective advantages for insect survival. [source] An Examination of the Reliability of Prestigious Scholarly Journals: Evidence and Implications for Decision-MakersECONOMICA, Issue 293 2007ANDREW J. OSWALD Scientific-funding bodies are increasingly under pressure to use journal rankings to measure research quality. Hiring and promotion committees routinely hear an equivalent argument: ,this is important work because it is to be published in prestigious journal X'. But how persuasive is such an argument? This paper examines data on citations to articles published 25 years ago. It finds that it is better to write the best article published in an issue of a medium-quality journal such as the OBES than all four of the worst four articles published in an issue of an elite journal like the AER. Decision-makers need to understand this. [source] A Guide to Educational Philosophizing After HeideggerEDUCATIONAL PHILOSOPHY AND THEORY, Issue 2 2008Donald Vandenberg Abstract This paper heeds the advice of EPAT's editor, who said he ,will be happy to publish further works on Heidegger and responses to these articles' after introducing four articles on Heidegger (and one of his students) and education in the August, 2005, issue. It discusses the papers in order of appearance critically, for none of them shows understanding of Heidegger's writings and descriptions of human existence in his most important work, Being and Time, nor the work of the internationally recognized educational philosopher who has written about educational problems using Heidegger's perspective (among others) over the past forty years and that should be considered in any application of Heidegger's thought to education if educational philosophy is to become a cumulative discipline. Because philosophy of education is notoriously non-accumulative and requires far more than referring to education in the first and last paragraphs of an article in order to be about an educational problem or phenomenon, the publications of this scholar in the phenomenology of education are mentioned throughout, as are Heidegger's works, to show how the four authors might have benefited from library research to utilize existing understandings and go beyond them. Finally, some suggestions are made about how to read with understanding Heidegger's magnum opus, Being and Time. [source] Analysis of work on smoke component yields from room-scale fire testsFIRE AND MATERIALS, Issue 5 2005Marcelo M. Hirschler Abstract Smoke Component Yields from Room-Scale Fire Tests (NIST Technical Note TN 1453) has recently been published. This was expected to be an important work in developing concentrations and yields of toxicants that could be used for evaluating the usefulness of small scale smoke toxicity apparatuses (or fire models) for use in the prediction of the toxicity of materials and products in real fires. However, the work has a number of uncertainties that limit its potential for use as a reference. There are three major problems with this work. First, the post-flashover concentrations of CO are too low (as recognized by the authors who recommend that this part of the data not be used). Second, the post-flashover concentrations of the main toxicants measured (HCN and HC1) were much higher than found in most studies. Third, the precision of the data was inadequate. The consequence of the first two issues is that the work seriously overestimates the toxicological importance of gases known to have only minor effects in post-flashover fires, such as HCN and HCl. The very low concentrations of toxicants measured at pre-flashover conditions might have a value not discussed by the authors: an indication that pre-flashover fires of the type conducted here do not generate extremely toxic atmospheres. Accordingly, the report does not provide reliable characteristic room scale combustion gas data that can be used for validating small-scale furnaces. Copyright © 2005 John Wiley & Sons, Ltd. [source] Heat transfer by radiation and convection in fire testingFIRE AND MATERIALS, Issue 5 2004Ulf Wickström Abstract Fire safety engineers, especially those experts writing fire test standards, often have different understandings of the concepts of heat transfer from a fire to a surface by radiation and convection. The concepts are therefore often not very well defined, in e.g. ISO and CEN standards, leading in many cases to confusions, misunderstandings and considerable errors. This paper is an effort, in a very simple way, to make the issue a little clearer, particularly for use in international standardization work. ISO/TC92 and the International FORUM of Fire Research Directors are currently endorsing very important work on procedures to calibrate heat flux meters. The two entities, heat transfer by radiation and convection, may be treated independently. The presentation below is deliberately very short and basic avoiding many phenomena that are not immediately needed in most fire standardization work. Recommendations are reached on how to define and measure heat transfer in fire testing. Copyright © 2004 John Wiley & Sons, Ltd. [source] SOSA ON EPISTEMIC CIRCULARITY AND REFLECTIVE KNOWLEDGEMETAPHILOSOPHY, Issue 2 2009NOAH LEMOS Abstract: Ernest Sosa has done important work on epistemic circularity, epistemic virtue, and reflective knowledge. He holds that epistemic circularity need not be vicious and need not prevent us from knowing that our ways of forming beliefs are reliable. In this article, I briefly explore Sosa's defense of this view and raise some questions about what is required for reflective knowledge. [source] Observations on a vestigial organ: a potential surrogate for enteric neuromesenchymal diseaseNEUROGASTROENTEROLOGY & MOTILITY, Issue 4 2008C. H. Knowles Abstract, Abnormalities of enteric nerves, interstitial cells of Cajal (ICC) and smooth muscle are often associated with severe gastrointestinal motility disorders. In this context, full-thickness biopsy of the gut may provide important diagnostic and prognostic clues as well as some possible therapeutic implications. Nonetheless, the unavoidable risk to further worsen prognosis evoked by laparotomy, and the unclear yield of histopathological analysis has hampered full-thickness gut sampling in patients with severe dysmotility. However, recent advances in minimally invasive surgery have refuelled enthusiasm in gastrointestinal neuromuscular pathology. In this issue of Neurogastroenterology and Motility, Miller et al. provide novel and exciting evidence that the appendix might be used as a surrogate tissue to analyse changes to enteric nerves, ICC and smooth muscle cells in patients with diabetic gastroenteropathy. The objective of this short review was to place this very important work in the context of current understanding of enteric neuromuscular dysfunction. [source] Front and Back Covers, Volume 22, Number 5.ANTHROPOLOGY TODAY, Issue 5 2006October 200 Front and back cover caption, volume 22 issue 5 Front cover Kayapo men of Brazilian Amazonia dance at a meeting of all Kayapo villages held in March 2006 with the aim of forging a united movement against the encroachment of agribusiness and large-scale development projects into the Xingú river valley. Up to the time of this meeting the widely dispersed Kayapo communities had never joined together as a single political organization under a common leadership. That they were able to do so at this meeting owed much to their ability to draw upon their shared tradition of collective ritual dance performances, which serve as the principal means of reproducing the social and political structures of their separate villages. At the meeting, held at the Kayapo village of Piaraçu on the Xingú, members of rival communities with mutually suspicious leaders joined in dances such as this one, drawn from the ritual for war, that expressed their solidarity in opposition to the common external threat. For the general audience, periodic interludes of dancing also provided a dramatic way of showing solidarity with one another and jointly expressing support for the orators, who were mostly leaders of the different communities. The meeting closed with a new ritual created for the occasion that began with a collective dance and culminated in a rite symbolizing the new level of common chiefly authority and leadership, encompassing Kayapo society as a whole, that had been created at the meeting. Back cover COMPETITIVE HUMANITARIANISM The back cover of this issue shows a detail from a map of ,Humanitarian actors involved in tsunami-related activities in Sri Lanka'. This excerpt lists but a few dozen of the many hundreds of agencies competing to provide relief in the wake of the tsunami that hit Sri Lanka in December 2004. In most disasters, a major problem facing relief agencies is a lack of resources. In the case of the 2004 tsunami, however, agencies were forced into competition with each other for effective distribution of an embarrassment of riches. Yet this distribution had to be in line with international standards, and needed to meet the requirements of those who had donated to the various appeals in other parts of the world and had specific ideas of what constituted relief. The result was an over-concentration on the visible and the photogenic rather than the arguably more important work of rebuilding institutions and social networks. As well as needing to meet international standards, relief agencies were subject to the bureaucratic requirements that they should expend their resources in an accountable fashion. Their slow reaction opened the way for a plethora of small and inexperienced organizations (and individuals) to enter the relief business. The aid they dispensed was often poorly directed and technically inferior, but the visibility of their operations prompted an easy criticism of the more ponderous activities of the larger relief organisations. While ready availability of resources marked out the tsunami relief effort from most other disasters, what seems to characterize aid operations in the wake of such disasters is a high degree of competition between relief agencies, and a continual call for a greater degree of co-ordination between relief organizations. Yet competitive pressures mean that co-ordination is unlikely to be attainable over more than the short term. From an anthropological point of view the following paradox is worthy of study: while philanthropy can be seen as the antithesis of self-interest, philanthropic organisations are inherently part of a self-interested, market-orientated social order. What starts out as a ,free gift' from the public of Europe, Asia or elsewhere ends up as a commodity in the marketplace of competitive humanitarianism. [source] Care and the Problem of PityBIOETHICS, Issue 1 2003Fitzgerald, Patrick Boleyn In recent years philosophers and bioethicists have given considerable attention to the concept of care. Thus we have seen important work on questions such as: whether there is a uniquely female approach to ethics, whether ethics should be partial or impartial, and whether care must be supplemented by justice. Despite this valuable and extensive work, however, some important distinctions have gone largely undiscussed. This paper tries to fill a gap left in our understanding of the concept of care itself by distinguishing between compassion and two kinds of pity. While all three are kinds of caring, we should not give them similar moral evaluations. Consequently, the distinction between compassion and different kinds of pity gives us an important insight into the question of whether we can consider care a virtue for health care professionals. [source] Evaluation of documentation in potential abusive head injury of infants in a Paediatric Emergency DepartmentACTA PAEDIATRICA, Issue 5 2009Björn Tingberg Abstract Aim: The aim is to evaluate medical record documentation regarding potential abusive head injury (AHI) in infants presenting to a Paediatric Emergency Department (ED) with certain primary complaints known to be associated with AHI. Methods: A database search was performed to find all medical records over a period of one year relating to those children who had one AHI-related primary complaint and who had had a CT head-scan performed in conjunction with admission. Each medical record was reviewed, in order to assess whether potential abuse had been investigated and documented. Each CT-scan image was re-evaluated for missed indications of potential injuries attributable to AHI. Results: Forty-seven such medical records were found. Of these, 87% showed the diagnosis to be head injuries. The largest group of children was in the age group 0,3 months (38%). Of the children admitted to the Paediatric ED due to a head injury, 54% had a history deemed to raise suspicions of abuse but only five of them had had a documented investigation of child abuse. The re-evaluation of the CT-scans showed no missed cases. Conclusion: In this study we found that among children with known risk factors for AHI, only a few had documentation regarding potential child abuse. The use of a standardized protocol could be helpful in the important work to help staff discover potential AHI. [source] Diet Studies in the Romantic PeriodLITERATURE COMPASS (ELECTRONIC), Issue 5 2009Samantha Webb The burgeoning interdisciplinary field of diet studies examines representations of food, eating and drinking, and other aspects of consumption in literary and non-literary texts. It emerged in the field of British Romanticism, at the intersection of materialist and formalist criticisms, and draws on food anthropology, food history and consumption studies. It also seeks to intervene into philosophy and aesthetics by revealing the corporeal and gustatory tropes that sometimes ground these fields. The Romantic period has proven to be a fertile literary moment for questions about diet. Coinciding historically with the consumer revolution, the period between the 1780s and 1830s saw many changes in diet, including the rise of haute cuisine, and the introduction of luxury foods like tea, sugar, coffee and chocolate. Dietary reformers also sought to introduce potatoes into the diets of the poor in the wake of food shortages. In tandem with this historical context, the 18th century is also known as the ,century of taste', and diet studies examine the gustatory dimensions of the aesthetic concept of taste. In diet studies, food is read as a sign that can demystify ,Romantic ideology' but that can also maintain its status as a figure. In this article, I review some of the most important works in the field, and suggest some of the reasons that diet studies has proved to be such a productive intervention into Romantics studies. [source] The World, As It Might Be: Iconography and Probabilism in the Mundus subterraneus of Athanasius KircherCENTAURUS, Issue 1 2006Mark A. Waddell Abstract. Though one of the best-studied Jesuit naturalists of the 17th century, Athanasius Kircher (1602,1680) remains something of an enigma to modern scholars. Frequently associated with traditions of Renaissance magic and esotericism, and thereby cast as an anachronism at odds with the forward-looking character assigned by historians of science to the 17th century, Kircher was nonetheless a typical product of his time and, more importantly, of the Society of Jesus. This study explores one of Kircher's most important works, the Mundus subterraneus of 1665, in an effort to establish how specific spiritual and intellectual traditions present within the Society affected both the questions that Kircher posed and the methodologies he adopted to answer them. Using a combination of iconography and narrative structure, Kircher emphasized the contemplation of the probable rather than the accumulation of ,facts', thereby permitting his audiences to glimpse for themselves the unseen realms of the world. Drawing on specific meditative traditions already circulating within the Society, as well as strains of an anti-skeptical probabilism that was gaining strength in the Society's schools, Kircher thus shaped an approach to the hidden depths of the Earth that can be usefully linked to his institutional and intellectual contexts. [source] | |||||||||||||