Bloody Diarrhea and Colorectal Bleeding -- Marathon Runner

Please view the clinical abstract in the attached PDF fil

Recurrent Concussion, How Many is Too Many? Sport- Football

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What is the best way to evaluate an acute traumatic knee injury?

The Ottawa Knee Rules can guide the use of radiography in adults who present with isolated knee pain. However, information on use of these rules in the pediatric population is limited (strength of recommendation [SOR ]: A, based on systematic review of high-quality studies and a validated clinical decision rule). Specific physical examination maneuvers (such as the Lachman and McMurray tests) may be helpful when assessing for meniscal or ligamentous injury (SOR : C, based on studies of intermediate outcomes)

A study using a graphical syntax for actor-network theory

PURPOSE – Actor-network theory (ANT) is considered to be both a theoretical position and a methodology. ANT has been the centre of vigorous debates regarding its ontological viewpoint but has also been found to have some drawbacks as a methodology. The purpose of this paper is to use a graphical syntax for ANT to describe the development and implementation of a health information system (IS) in order to assess whether the graphical syntax improves the use of ANT as a methodology. DESIGN / METHODOLOGY / APPROACH – An extensive example derived from a case study, describing the development and implementation of an electronic patients’ records system, is illustrated using this graphical syntax. This serves to makes the actors, translations and black boxes in the case visible. FINDINGS – The syntax is found to help the researcher to conceptualise the research, to highlight assumptions as black boxes and to follow the actor but above all it encourages the researcher to understand the translations being made between actors and to make them explicit. Hence the syntax is found to assist at the analytical phases of a research project. The graphic syntax found to address the criticisms identified for ANT as an IS research methodology. RESEARCH LIMITATIONS / IMPLICATIONS – The proposed graphical syntax assists researchers who use ANT as a methodology. Use of the syntax in education is also foreseen to be practical. The evaluation of ANT-gs in the paper provides an argument for its use but a more reliable argument would be made by collating and analysing feedback from independent modellers who actually use the graphical syntax. This is an important part of future research. PRACTICAL IMPLICATIONS – The visualisation of the actor-network provided by ANT-gs provides a relatively simple representation while at the same time it makes key ANT concepts explicit. This is expected to address the issue of superficial understanding of ANTand selective use of its constructs; it makes the actor-network boundaries immediately visible. Thus the paper proposes that ANT-gs will be useful both by IS researchers and as an educational tool but future research is required to verify both these practical implications. The development of a computer-based modelling tool based on this syntax is proposed to facilitate effective and efficient modelling. ORIGINALITY / VALUE – This paper proposes a unique tool to support ANT as a methodology. Its use encourages the researcher to focus on constructs that are essential elements of ANT and, by making each of the translation instances explicit, it strengthens the analysis in a way that is true to the view of ANT as a sociology of translation.http://www.emeraldinsight.com/loi/itphb201

Actor-network theory in information systems research

INTRODUCTION. The use of actor-network theory is becoming increasingly common amongst information systems researchers. This study argues that the utility of actor-network theory as a conceptual tool for information systems research can be increased by expressing actor-network theory in a graphical format. To this end, a graphical syntax was designed based on a comprehensive conceptualisation of actor-network theory. METHOD. Design science research was used to produce an artefact (the graphical syntax) which is believed to be of practical use (relevant), innovative and based on a rigorous body of knowledge. ANALYSIS. The graphical syntax is illustrated in this paper only by means of a fictitious example in order to maintain focus on the syntax and the concepts depicted by the syntax. RESULTS. The strengths and weaknesses of the syntax are related to those of actor-network theory itself. The principal strength is the inclusion of heterogeneous actors in the analysis, and the main weakness relates to the vague boundaries of the theory. This weakness is addressed by the ability of the syntax to identify the primary research foci. CONCLUSIONS. It is proposed that actor-network theory can be successfully represented by a graphical syntax and that it can increase the utility of actor-network theory as a conceptual tool for information systems research.http://www.informationr.nethb201

Nonlinear subgrid-scale models for large-eddy simulation of rotating turbulent flows

We aim to design subgrid-scale models for large-eddy simulation of rotating turbulent flows. Rotating turbulent flows form a challenging test case for eddy viscosity models due to the presence of the conservative Coriolis force. We therefore propose a new subgrid-scale model that, in addition to a dissipative eddy viscosity term, contains a nondissipative nonlinear model term that can capture transport processes, such as those due to rotation. We show that the addition of this nonlinear model term leads to improved predictions of the Reynolds stress anisotropy in large-eddy simulations of a spanwise-rotating plane-channel flow, while maintaining the prediction of the mean velocity profile that is obtained when only using an eddy viscosity model.<br/

FIVA:Functional Information Viewer and Analyzer extracting biological knowledge from transcriptome data of prokaryotes

FIVA (Function Information Viewer and Analyzer) aids researchers in the prokaryotic community to quickly identify relevant biological processes following transcriptome analysis. Our software assists in functional profiling of large sets of genes and generates a comprehensive overview of affected biological processes.