380 research outputs found

    Manned Mars mission vehicle design requirements for aerocapture

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    Vehicle design requirements of a reusable system for manned Mars missions which employ aerocapturing techniques to obtain desired orbital velocities are defined. Requirements for vehicle L/D and ballistic coefficient are determined for expected aerocapture velocities. Conclusions are presented concerning g-loads environment and TPS requirements for a vehicle that aerocaptures at Mars and Earth. Although the goal of a reusable system (based on current state-of-art technologies) was not obtained, the viability of aerocapture at Mars and Earth was established

    Feasibility of a Co-operative Winery

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    The number of operating wineries in the United States has doubled during the past decade. Most of this growth has been due to a large number of entrepreneurial landowners developing their own small acreage vineyards and trying to branch into winemaking. However, wineries are capital-intensive enterprises which require high initial investment and experience lagged cash flow associated with the time between the purchase of grapes and initial wine sales. Additionally, the availability of local grape production often limits the production capabilities of an entrepreneur’s small winery. As a result, some vineyard owners consider establishing co-operative wineries. This paper describes a feasibility assessment tool developed to assist vineyard owners in examining the potential for a co-operative winery and provides an example of how this tool can be used to examine a number of co-operative operating scenarios.co-operative, feasibility template, qualified and nonqualified stock, revolving equity, winery, Agribusiness, Financial Economics,

    Collisions Between Culture and Project Management – An Aboriginal Perspective

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    The Project Management Body of Knowledge makes practically no mention of culture as a factor in the study and execution of Project Management. However, a vast amount of material is available that emphasizes how culture plays an integral part in today’s business and assists business executives navigate within a cross-cultural world. This unequal focus on culture in general business management vis-à-vis Project Management is the focus of this study. This thesis explores this problem domain by investigating the role that cultural differences play in managing projects within Aboriginal communities of Canada. A research model was developed after reviewing the theoretical framework associated with the business case for engagement, issues related to communication, and factors relevant for cultural differences. This model was then tested through interviews with both Aboriginal community development leaders and representatives from Canadian corporations. The validity of the research model was determined based on the information obtained from the interviews. This study unveils critical success factors based on cultural differences for Project Management in general and for managing projects that involve Aboriginal communities and Canadian corporations in particular

    Achieving equity within universal health coverage: a narrative review of progress and resources for measuring success

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    Introduction: Equity should be implicit within universal health coverage (UHC) however, emerging evidence is showing that without adequate focus on measurement of equity, vulnerable populations may continue to receive inadequate or inferior health care. This study undertakes a narrative review which aims to: (i) elucidate how equity is contextualised and measured within UHC, and (ii) describe tools, resources and lessons which will assist decision makers to plan and implement UHC programmes which ensure equity for all

    Whole genome amplification and its impact on CGH array profiles

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution Licens

    Conditional statistics of passive-scalar mixing in a confined wake flow

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    Experimental results for conditional statistics in a confined turbulent wake were compared to the linear model and the transported probability density function (PDF) model for predicting the velocity conditioned on scalar mixture fraction and to a linear model for predicting the scalar mixture fraction conditioned on velocity. For velocity conditioned on scalar mixture fraction, the linear model was found to accurately predict the conditional transverse velocity, but for the conditional streamwise velocity, agreement between the experiments and the linear model was poor. The transverse conditional velocity was accurately predicted by the transported PDF model, but for the streamwise conditional velocity, a modified transported PDF model that incorporated two components of the scalar diffusivity tensor had to be used. Finally, it was found that a linear model for predicting the fluctuating scalar conditioned on velocity performed poorly due to the strongly non-Gaussian scalar PDF at the downstream locations investigated
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