1,161 research outputs found

    How Many Are Out There? A Novel Approach For Open and Closed Systems

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    We propose a ratio estimator to determine population estimates using capture-recapture sampling. It\u27s different than traditional approaches in the following ways: (1) Ordering of recaptures: Currently data sets do not take into account the ordering of the recaptures, although this crucial information is available to them at no cost. (2) Dependence of trials and cluster sampling: Our model explicitly considers trials to be dependent and improves existing literature which assumes independence. (3) Rate of convergence: The percentage sampled has an inverse relationship with population size, for a chosen degree of accuracy. (4) Asymptotic Attainment of Minimum Variance (Open Systems: (=population variance). (5) Full use of data and model applicability (6) Non-parametric (7) Heterogeneity: When units being sampled are hard to identify. (8) Open and closed systems: Simpler results are presented separately for closed systems. (9) Robustness to assumptions in open system

    A framework for QoS driven user-side cloud service management

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    This thesis presents a comprehensive framework that assists the cloud service user in making cloud service management decisions, such as service selection and migration. The proposed framework utilizes the QoS history of the available services for QoS forecasting and multi-criteria decision making. It then integrates all the inherent necessary processes, such as QoS monitoring, forecasting, service comparison and ranking to recommend the best and optimal decision to the user

    Framework Based Analysis of Corporate Leadership, Emotional Intelligence (EI) Competencies and Organizational Performance – A Developmental Perspective

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    The study focuses on the issues of organizational performance, particularly related to developing corporate leadership to the level of effectiveness and the extended result as an outcome on organizational performance. We propose a model by plausibly linking the competencies related to emotional intelligence with effectiveness of corporate leadership, eventually fashioning out a high performance organization. In order to develop a framework, it includes conceptions grounded on EI as exogenous variable (ξ), Effective corporate leadership (ECL) as endogenous (η) variable and high performance organisation as outcome variable. The feedback composed was collected from 1171 corporate leaders serving in large business organizations across Pakistan. For analysis purpose, after data cleansing, SEM is employed to obtain results related to model fit and testing of hypotheses. Measurement and Structural Models approve the propositions of the study. After analysis, it is pertinent to mention that findings show great role of the competencies of EI with corporate leadership, and as a trickled down effect on overall organizational performance. The results also show how leadership can be developed to the level of effectiveness and thus can lead to achieve corporate reputation, employee commitment, market performance and financial performance of an organization. It is seen that the influence of EI competencies has not only the impact on the effectiveness of corporate leadership but also on overall organisational performance. &nbsp

    Peripheral vascular injuries - not to miss or mess them!

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    Neoaorta reconstruction using both femoral veins in a patient with secondary aortoenteric fistula

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    In situ reconstruction using femoral veins is emerging as one of the acceptable options for aortic reconstruction in patients with aortoduodenal fistula. We report a 35-year young male who presented with secondary aortoenteric fistula. His infected aortic graft was removed and was successfully managed by neo-aortic reconstruction, using both femoral veins in a \u27pantaloon\u27 fashion. He had smooth postoperative recovery and did not have graft re-infection. He did not show signs of chronic venous insufficiency on long-term follow-up

    Cocoon abdomen - a rare cause of intestinal obstruction.

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    Abstract INTRODUCTION: Sclerosing encapsulating peritonitis or abdominal cocoon is a rare condition of unknown etiology in which intestinal obstruction result from encasement of variable length of bowel by dense fibro collagenous membrane. PRESENTATION OF CASE: A case of young male is reported who presented with features of small bowel obstruction with tender mass in the right iliac fossa. CT scan suggested features of internal herniation. On exploration, he was found to have small intestine, large intestine, stomach and liver covered with a thick cocoon like membrane. The membrane was gently peeled off the small intestine. The patient recovered well and was discharged on an oral diet. DISCUSSION: Preoperative diagnosis of abdominal cocoon is difficult and most cases are discovered incidentally on laparotomy. Contrast enhanced computed tomography or barium meal may be helpful in preoperative diagnosis. Surgical treatment is the main stay of treatment for this condition. Simple removal of the membrane and lysis of the adhesions produces optimal outcome. Bowel resection is indicated only when the intestine is nonviable. CONCLUSION: A high index of suspicion and appropriate radiology can prevent \u27surprises\u27 and unnecessary bowel resection. Simple removal of the membrane gives a good outcome
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