34 research outputs found

    The Octave Allegro Method in Risk Management Assessment of Educational Institutions

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    Risk management is useful in overcoming various problems such as not optimal business processes, the company's reputation down, financial loss, or bankruptcy of a company. In the application of information systems, most organizations or companies have not noticed the importance of information systems security as well as the assets and impacts that arise. For that, the risk management assessment is used in reducing the errors that occur in the information system of the company's business processes. The risk management assessment is applied to the information system along with its assets in evaluating the possibilities of menaces and vulnerabilities. The Risk management assessment analysis is applied to the academic information system in universities. The result of the risk assessment is the results of recommendations on the stages that need to be done in protecting the assets of information systems and information systems themselves

    Real-time three-dimensional MRI for the assessment of dynamic carpal instability.

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    BackgroundCarpal instability is defined as a condition where wrist motion and/or loading creates mechanical dysfunction, resulting in weakness, pain and decreased function. When conventional methods do not identify the instability patterns, yet clinical signs of instability exist, the diagnosis of dynamic instability is often suggested to describe carpal derangement manifested only during the wrist's active motion or stress. We addressed the question: can advanced MRI techniques provide quantitative means to evaluate dynamic carpal instability and supplement standard static MRI acquisition? Our objectives were to (i) develop a real-time, three-dimensional MRI method to image the carpal joints during their active, uninterrupted motion; and (ii) demonstrate feasibility of the method for assessing metrics relevant to dynamic carpal instability, thus overcoming limitations of standard MRI.MethodsTwenty wrists (bilateral wrists of ten healthy participants) were scanned during radial-ulnar deviation and clenched-fist maneuvers. Images resulting from two real-time MRI pulse sequences, four sparse data-acquisition schemes, and three constrained image reconstruction techniques were compared. Image quality was assessed via blinded scoring by three radiologists and quantitative imaging metrics.ResultsReal-time MRI data-acquisition employing sparse radial sampling with a gradient-recalled-echo acquisition and constrained iterative reconstruction appeared to provide a practical tradeoff between imaging speed (temporal resolution up to 135 ms per slice) and image quality. The method effectively reduced streaking artifacts arising from data undersampling and enabled the derivation of quantitative measures pertinent to evaluating dynamic carpal instability.ConclusionThis study demonstrates that real-time, three-dimensional MRI of the moving wrist is feasible and may be useful for the evaluation of dynamic carpal instability
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