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Search Results: 1 - 10 of 403881 matches for " Griffin M. Weber "
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Extracting Physician Group Intelligence from Electronic Health Records to Support Evidence Based Medicine
Griffin M. Weber, Isaac S. Kohane
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0064933
Abstract: Evidence-based medicine employs expert opinion and clinical data to inform clinical decision making. The objective of this study is to determine whether it is possible to complement these sources of evidence with information about physician “group intelligence” that exists in electronic health records. Specifically, we measured laboratory test “repeat intervals”, defined as the amount of time it takes for a physician to repeat a test that was previously ordered for the same patient. Our assumption is that while the result of a test is a direct measure of one marker of a patient's health, the physician's decision to order the test is based on multiple factors including past experience, available treatment options, and information about the patient that might not be coded in the electronic health record. By examining repeat intervals in aggregate over large numbers of patients, we show that it is possible to 1) determine what laboratory test results physicians consider “normal”, 2) identify subpopulations of patients that deviate from the norm, and 3) identify situations where laboratory tests are over-ordered. We used laboratory tests as just one example of how physician group intelligence can be used to support evidence based medicine in a way that is automated and continually updated.
Determining Angstrom Constants for Estimating Solar Radiation in Malawi  [PDF]
Griffin Salima, Geoffrey M. S. Chavula
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.32043
Abstract: This paper discusses a procedure that was adopted for the development of a linear regression model for estimating solar radiation in Malawi. By making use of sunshine-hours data recorded at six selected meteorological stations in the country, namely: Salima, Makoka, Karonga, Bolero, Chileka and Mzimba over the period 1991-1995, a set of Angstrom constants were obtained and averaged in order to develop the linear regression model. This model has potential for generating ground observation data of solar radiation at any given location in the country using sunshine hours as the only required input. The Gunn-Bellan Spherical Pyranometer and the Campbell Stokes Sunshine Recorder were respectively used in the measurement of incident radiation (Ib) in J·cm–2/day (converted to MJ·m–2·day–1) and sunshine hours. An Angstrom model of monthly average Clearness Index with normalized sunshine duration was then developed for each of the six meteorological stations. The resulting linear regression model was applied in estimating monthly average daily solar radiation. Regression analysis between computed and measured radiation data was applied to assess the reliability of the generated Angstrom constants. The results generally show a high degree of agreement between the two variables, with correlation coefficients ranging from 0.63 to 0.90. Angstrom constants obtained at the six meteorological stations were thereafter averaged in order to develop a linear regression model for estimating solar radiation in Malawi. Solar radiation values obtained using this model were noted to be in good agreement with those developed for each of the six meteorological stations.
Clinical Screening and Intervention in Cases of Partner Violence
Griffin, M., Koss, M
Online Journal of Issues in Nursing , 2002,
Abstract: Partner violence is a long-term health risk factor that can potentially have far-reaching, negative consequences on both those abused and their loved ones. The term "partner" is used to define opposite and same sex couples who are in relationships on a continuum ranging from casually dating to marriage. Partner violence includes physical, sexual, psychological, and economic abuse, as well as stalking behaviors. Even though the American Medical Association recommends screening for partner violence at multiple levels, there are many shortcomings of the current screening and intervention practice. Several factors facilitating the ineffectiveness of current practice include a lack of information related to the prevalence, duration, and severity of partner violence; physician’s misguided beliefs regarding a victim’s desire to disclose; and barriers that the victim faces when deciding whether to disclose partner violence. This article addresses these shortcomings and identifies nurses as an invaluable resource that has been under-utilized for screening and responding to partner violence. Also highlighted is one technique know by the acronym "RADAR" that is designed to address issues of both screening and intervention. Finally, resources for both health care practitioners and victims of abuse are provided.
Detection and measurement of total ozone from stellar spectra: Paper 2. Historic data from 1935–1942
R. E. M. Griffin
Atmospheric Chemistry and Physics (ACP) & Discussions (ACPD) , 2006,
Abstract: Atmospheric ozone columns are derived from historic stellar spectra observed between 1935 and 1942 at Mount Wilson Observatory, California. Comparisons with contemporary measurements in the Arosa database show a generally close correspondence, while a similar comparison with more sparse data from Table Mountain reveals a difference of ~15–20%, as has also been found by other researches of the latter data. The results of the analysis indicate that astronomy's archives command considerable potential for investigating the natural levels of ozone and its variability during the decades prior to anthropogenic interference.
Strict 2-toposes
M. Weber
Mathematics , 2006,
Abstract: A 2-categorical generalisation of elementary topos is provided and some of the properties of the yoneda structure it generates are explored. Examples relevant to the globular approach to higher category theory are discussed. This paper also contains some expository material on the theory of fibrations internal to a finitely complete 2-category as well as a self-contained development of the necessary background on yoneda structures.
Parents Accidentally Substitute Similar Sounding Sibling Names More Often than Dissimilar Names
Zenzi M. Griffin, Thomas Wangerman
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0084444
Abstract: When parents select similar sounding names for their children, do they set themselves up for more speech errors in the future? Questionnaire data from 334 respondents suggest that they do. Respondents whose names shared initial or final sounds with a sibling’s reported that their parents accidentally called them by the sibling’s name more often than those without such name overlap. Having a sibling of the same gender, similar appearance, or similar age was also associated with more frequent name substitutions. Almost all other name substitutions by parents involved other family members and over 5% of respondents reported a parent substituting the name of a pet, which suggests a strong role for social and situational cues in retrieving personal names for direct address. To the extent that retrieval cues are shared with other people or animals, other names become available and may substitute for the intended name, particularly when names sound similar.
The double-lined spectroscopic binary hr 6046
C. D. Scarfe,R. F. Griffin,R. E. M. Griffin
Revista mexicana de astronomía y astrofísica , 2004,
Abstract: HR 6046 se conoce desde hace mucho como una binaria espectrosc opica de una l nea, cuya primaria es de tipo K tard o. El largo per odo (de m as de seis a~nos) y el alto valor de la funci on de masa han motivado varios intentos, hasta ahora fallidos, para resolver interferom etricamente el sistema. Sin embargo, hemos detectado espectrosc opicamente a la secundaria, y presentamos aqu los elementos orbitales espectrosc opicos. La secundaria tiene una masa casi igual a la de la primaria, pese a que es mucho m as d ebil. La comparaci on con espectros est andar para tipos tard os sugiere que tambi en la secundaria es una estrella evolucionada.
Higgs Production by Gluon initiated Weak Boson Fusion
Weber, M. M.
High Energy Physics - Phenomenology , 2007,
Abstract: The gluon-gluon induced terms for Higgs production through weak-boson fusion are calculated. They form a finite and gauge-invariant subset of the NNLO corrections in the strong coupling constant. This is also the lowest order with sizeable t-channel colour exchange contributions, leading to additional hadronic activity between the outgoing jets.
Determination of Vts from D -> K* l nu and B -> K* gamma data via heavy quark symmetry and perturbative QCD
P. A. Griffin,M. Masip,M. McGuigan
Physics , 1993, DOI: 10.1103/PhysRevD.50.5751
Abstract: We use heavy quark effective theory (HQET) and perturbative QCD to study the heavy meson -- light vector meson transitions involved in D and B decays. HQET is used to relate the measured D -> K* l nu vector and axial-vector form factors at four-momentum transfer q^2 = 0 to the B -> K* gamma tensor and axial-tensor form factors at q^2 = 16.5 GeV^2. Perturbative QCD is then used to find matching conditions for the B-meson form factors at q^2 = 0. A five parameter ``vector dominance'' type fit of the two HQET form factors, consisting of single pole, double pole, and subtraction terms, is used to match the data at q^2 = 16.5 GeV^2 to QCD at q^2 = 0. The values at q^2 = 0 are compared with recent data on the exclusive rate for B -> K* gamma decay to extract a value for the Cabibbo-Kobayashi-Maskawa matrix element Vts = 0.035, with 28% experimental uncertainty, and 32% theoretical uncertainty from higher order QCD effects and violations of heavy quark symmetry.
From policy to practice: education reform in Mozambique and Marrere Teachers’ Training College
M Guro, E Weber
South African Journal of Education , 2010,
Abstract: The Mozambican government has introduced reforms of basic education, notably the introduction of interdisciplinarity, learner-centredness and new teaching pedagogies. This is a case study of how these curriculum reforms have been implemented at Marrere Teachers’ Training College. We conducted interviews with lecturers, observed their teaching practices, and studied student results to assess teaching outcomes. The study is grounded in the literatures on educational change and globalization. The problems of policy and practice have focused attention on bottom-up and top-down research, and hybrid approaches. The study of globalization has highlighted the relationship between curriculum change and the world economy. There is a paucity of research on how these developments have affected underdeveloped countries. We found that practical issues influence implementation. Lecturers did not understand the meaning of interdisciplinarity. They could, however, articulate the meaning of learnercentredness. Lesson observations showed they did not implement it. Against the backdrop of these inter-related factors, final year students performed poorly in examinations. These analyses show the complexities of the moving from policy to practice, and the global to the local.
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