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Little Light (little + light)

Distribution by Scientific Domains

Medical Sciences	50%

Selected Abstracts

Atrial Fibrillation: Much Heat, A Little Light

JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, Issue 12 2006
F.C.S.A.N.Z., F.R.A.C.P., MARK A. McGUIRE M.B.B.S., Ph.D.
[source]

Effects of Coastal Lighting on Foraging Behaviorof Beach Mice

CONSERVATION BIOLOGY, Issue 5 2004
BRITTANY L. BIRD
comportamiento de forrajeo; iluminación artificial; polución por luz; ratones de playa (Peromyscus polionotus leucocephalus) Abstract:,Introduction of artificial light into wildlife habitat represents a rapidly expanding form of human encroachment, particularly in coastal systems. Light pollution alters the behavior of sea turtles during nesting; therefore, long-wavelength lights,low-pressure sodium vapor and bug lights,that minimize impacts on turtles are required for beach lighting in Florida (U.S.A.). We investigated the effects of these two kinds of lights on the foraging behavior of Santa Rosa beach mice ( Peromyscus polionotus leucocephalus). We compared patch use and giving-up densities of mice for experimental food patches established along a gradient of artificial light in the field. Mice exploited fewer food patches near both types of artificial light than in areas with little light and harvested fewer seeds within patches near bug lights. Our results show that artificial light affects the behavior of terrestrial species in coastal areas and that light pollution deserves greater consideration in conservation planning. Resumen:,La introducción de luz artificial al hábitat de vida silvestre representa una forma de intrusión humana que se expande rápidamente, particularmente en sistemas costeros. Durante la anidación, la polución por luz altera el comportamiento de tortugas marinas; por tanto, para la iluminación de playas en Florida (E. U. A) se requieren luces de longitud de onda larga , luces de vapor de sodio de baja presión y contra insectos , que minimizan impactos sobre las tortugas. Investigamos los efectos de estos dos tipos de luces sobre el comportamiento de forrajeo de ratones de playa de Santa Rosa ( Peromyscus polionotus leucocephalus). Comparamos el uso de parches y las densidades de rendición de ratones en parches alimenticios experimentales establecidos a lo largo de un gradiente de luz artificial en el campo. Los ratones utilizaron menos parches de forrajeo cercanos a ambos tipos de luz artificial que en áreas con poca iluminación y cosecharon menos semillas en parches cercanos a luces contra insectos. Nuestros resultados muestran que la luz artificial afecta el comportamiento de especies terrestres en áreas costeras y que la polución por luz merece mayor consideración en la planificación de la conservación. [source]

Characterizing regime shifts in the marine environment

FISH AND FISHERIES, Issue 2 2006
Kathryn Lees
Abstract Recent years have seen a plethora of studies reporting that ,regime shifts' have occurred in the North Atlantic and Pacific Oceans during the last century. In many cases, the criteria used to distinguish a regime shift have not been explicitly stated. In other cases, a formal definition has been proposed and the data set assessed against it. Developing a universal quantitative definition for identifying and distinguishing between purported climatic and ecological regime shifts has proved problematic as many authors have developed criteria that seem unique to the system under study. Consequently, they throw little light on the drivers of ecological regime shifts. Criteria used to define regime shifts are reviewed and on the basis of evidence from purported regime shifts, common characteristics in the speed and amplitude of the changes and the duration of quasi-stable states are used to propose a more clearly defined set of criteria for defining climatic and ecological regime shifts. Causal drivers of regime shifts are explored using correlation analysis. Limitations of these methods are discussed. [source]

Physician characteristics associated with prescription of inappropriate medications using Beers criteria

GERIATRICS & GERONTOLOGY INTERNATIONAL, Issue 4 2007
Hirohisa Imai
Background: The prescription of potentially inappropriate medications (PIM) for elderly patients represents a major problem. In the published work, various practice characteristics associated with physicians prescribing habits have been reported. However, existing data has shed little light on the characteristics of physicians who tend to prescribe PIM. We examined whether personal, professional or practice characteristics differ between physicians who prescribe PIM and those who do not. Methods: The subjects comprised primary care and general practice physicians. Physicians were identified from the pharmacy database of a managed care organization as having prescribed medications for Medicare patients over 65 years enrolled in a managed care plan. We adopted Beers criteria to describe the prevalence of PIM use. The physicians were divided into three groups according to number of PIM prescribed. To examine the extent of associations between all the physician-related characteristics studied, polychotomous logistic regression was conducted. Results: Physicians who prescribed one to five PIMs were 0.63 (95% confidence interval [CI], 0.41,0.98) times more likely to have publications than physicians who prescribed no PIM. Physicians who prescribed more than six PIM were 3.18 (95% CI, 2.05,4.95) times more likely to be certified by an internal medicine board, 0.48 (95% CI, 0.30,0.78) times more likely to have publications, and 1.84 (95% CI, 1.01,3.35) times more likely to be in solo practice than physicians who prescribed no PIM. Conclusion: In this study, we found three predictors of PIM prescribing incidence. Since the current study could only describe associations and not causality, further research is necessary. [source]

Shine a little light , a concert for peace

INTERNATIONAL JOURNAL OF CLINICAL PRACTICE, Issue 3 2007
Graham Jackson
No abstract is available for this article. [source]

Concepts and Epistemic Individuation

PHILOSOPHY AND PHENOMENOLOGICAL RESEARCH, Issue 2 2005
WAYNE A. DAVIS
Christopher Peacocke has presented an original version of the perennial philosophical thesis that we can gain substantive metaphysical and epistemological insight from an analysis of our concepts. Peacocke's innovation is to look at how concepts are individuated by their possession conditions, which he believes can be specified in terms of conditions in which certain propositions containing those concepts are accepted. The ability to provide such insight is one of Peacocke's major arguments for his theory of concepts. I will critically examine this "fruitfulness" argument by looking at one philosophical problem Peacocke uses his theory to solve and treats in depth. Peacocke (1999, 2001) defines what he calls the "Integration Challenge." The challenge is to integrate our metaphysics with our epistemology by showing that they are mutually acceptable. Peacocke's key conclusion is that the Integration Challenge can be met for "epistemically individuated concepts."A good theory of content, he believes, will close the apparent gap between an account of truth for any given subject matter and an overall account of knowledge. I shall argue that there are no epistemically individuated concepts, and shall critically analyze Peacocke's arguments for their existence. I will suggest more generally that the possession conditions of concepts and their principles of individuation shed little light on the epistemology or metaphysics of things other than concepts. My broader goal is to shed light on what concepts are by showing that they are more fundamental than the sorts of cognitive and epistemic factors a leading theory uses to define them.1 [source]