1,182 research outputs found

    Precision CW laser automatic tracking system investigated

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    Precision laser tracker capable of tracking a low acceleration target to an accuracy of about 20 microradians rms is being constructed and tested. This laser tracking has the advantage of discriminating against other optical sources and the capability of simultaneously measuring range

    A Modeling Approach to Determine the Impacts of Land Use and Climate Change Scenarios on the Water Flux of the Upper Mara River

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    With the flow of the Mara River becoming increasingly erratic especially in the upper reaches, attention has been directed to land use change as the major cause of this problem. The semi-distributed hydrological model Soil and Water Assessment Tool 5 (SWAT) and Landsat imagery were utilized in the upper Mara River Basin in order to 1) map existing field scale land use practices in order to determine their impact 2) determine the impacts of land use change on water flux; and 3) determine the impacts of rainfall (0%, ±10% and ±20%) and air temperature variations (0% and +5%) based on the Intergovernmental Panel on Climate Change projections on the water flux of the 10 upper Mara River. This study found that the different scenarios impacted on the water balance components differently. Land use changes resulted in a slightly more erratic discharge while rainfall and air temperature changes had a more predictable impact on the discharge and water balance components. These findings demonstrate that the model results 15 show the flow was more sensitive to the rainfall changes than land use changes. It was also shown that land use changes can reduce dry season flow which is the most important problem in the basin. The model shows also deforestation in the Mau Forest increased the peak flows which can also lead to high sediment loading in the Mara River. The effect of the land use and climate change scenarios on the sediment and 20 water quality of the river needs a thorough understanding of the sediment transport processes in addition to observed sediment and water quality data for validation of modeling results

    The Effects of Short-Term Detraining and Subsequent Retraining on Body Composition and Muscle Performance in Males Consuming a Whey Protein or Carbohydrate Supplement

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    An acute bout of resistance exercise (RE) can up-regulate processes that stimulate muscle protein synthesis (MPS). Additionally, nutritional strategies involving carbohydrate (CHO) and whey protein (WP) supplementation can augment MPS. However, resistance training (RT) induced muscle anabolism during the early phases of training can attenuate over time. The use of a short-term cessation of training (detraining; DT) can potentially restore the attenuated muscular anabolic adaptive responses. Therefore, the purpose of this study was to explore the effects of a successive cycle of detraining and retraining (ReT) in humans on body composition and muscle performance. Resistance-trained males (age 20.95 ± 1.23 y; n=20) were recruited and randomized into one of two groups (WP or CHO; 25 grams) in a double-blind fashion. Both groups followed a standardized 4 days per week resistance-training program for 4 weeks, carried out 2 weeks of DT and continued the resistance-training program for another 4 weeks of ReT. Participants were instructed to consume their respective supplement only on workout days during RT, but every day during DT. Research visits were conducted at baseline, 4 weeks (post-RT), 6 weeks (post-2-week-DT), and after 10 weeks (post-ReT). Each visit consisted of body composition assessments and muscular strength and endurance testing using the bench press and angled leg press exercises. Four-day diet records, workout logs, and supplement compliance forms were utilized. Factorial 2x4 (group by time) ANOVAs with repeated measures were conducted using SPSS (version 20.0) with a probability level of ≤ .05. There were no significant group by time interactions for lean or fat mass changes throughout the study (p \u3e .05). However, both groups were able to retain lean mass following 2 weeks of DT. The WP group appeared to have an elevation in lean mass (+1.58kg on average) by the end of ReT in comparison to baseline, even though it was not statistically significant (p \u3e .05). Leg press strength (LPS) increased throughout the study (p=.003), and neither group showed a decrease in LPS following DT. There were no group-by-time interactions or group differences between WP and CHO for bench press strength (BPS), bench press endurance (BPE), leg press endurance (LPE), or any dietary variables (p \u3e .05). Interestingly, the WP group presented a non-significant overall increase in lean mass compared to the CHO group by the end of 10 weeks. LPS and BPS were also elevated and retained respectfully following DT. In summary, a short-term 2 week cycle of DT in resistance trained males maintained both muscle mass and muscular strength, which potentially reinforces the importance of recovery

    The effects of prior exposure to agriculture on college students’ food purchasing decisions

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    This text examines the possible impacts of prior exposure to agriculture, and how this relates to college students’ food purchasing decisions. This study will assess if college students had prior exposure to agriculture before attending college, and what type of exposure this was, as well as assess how this prior exposure may alter purchasing decisions made by students who attend Mississippi State University. To collect this data, this study used a qualitative survey method to question students enrolled in the College of Agriculture and Life Sciences at Mississippi State University and determine if there is a significant relationship between prior exposure to agriculture and the purchasing decisions of food products. It was found that a college student’s prior exposure to agriculture does in fact impact their food purchasing decisions. It is recommended that this study be replicated with a larger sample size and further research should be conducted to examine specifically how their purchasing decisions are impacted. This study could also aid in future research to find the best agriculture education methods for this specific demographic of college students ages 18-23 in order to raise agriculture literacy rates and preserve the future of the agriculture industry

    Statistical Communication Theory

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    Contains reports on eleven research projects.National Institutes of Health (Grant MH-04737-03)National Science Foundation (Grant G-16526)National Aeronautics and Space Administration (Grant NsG-496

    Phases in Strongly Coupled Electronic Bilayer Liquids

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    The strongly correlated liquid state of a bilayer of charged particles has been studied via the HNC calculation of the two-body functions. We report the first time emergence of a series of structural phases, identified through the behavior of the two-body functions.Comment: 5 pages, RevTEX 3.0, 4 ps figures; Submitted to Phys. Rev. Let

    Bilateral Knowledge-Sharing for New Product Development Under the UN Sustainable Development Goals

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    Developing countries are characterized by various factors that feed into a vicious cycle of underdevelopment; poor education systems, low-skilled workforce, low per capita income, and unstable governments which build a weak foundation for economic prosperity and foreign investments. Moreover, there is no foundation from which innovation could transpire to drive growth. This research aims to provide a solution to this development paradox by emphasizing the urgency to address innovatively the United Nations Sustainable Development Goals (UN-SDGs) and utilize effectively the human intellectual capital of the developing countries with the support of multinational organizations. It introduces a Bilateral knowledge sharing model providing the MNCs a framework to merge local knowledge with existing expertise for the development of local market products, whilst developing the country’s human capital. Furthermore, it extends on the creation of Corporate Social Responsibility (CSR) actions for the MNCs related to the UN SDGs and 2030 Agenda

    The 4Es of Management: Managing Cultural Exchange in Multinational Corporations

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    Despite the obvious benefits that Multinational Corporations (MNCs) have on developing economies, those often come together with tremendous externalities. Rather than exploiting cost drivers and cost savings to deliver cheaper products to the Western customer, MNCs could try to find more ways to cater to local markets profitably whilst contributing to resolving social challenges. This paper introduces a management framework that facilitates knowledge-exchange between local organizations and the MNCs for a more targeted product development that can effectively respond to the local needs. This research explores the relationship between MNCs and developing markets; it highlights the pitfalls of new product development efforts for such markets in depth before touching upon more effective ways of generating innovative intellectual capital for product development practices; it introduces the 4Es Management Framework that can solve cultural exchange challenges in MNCs, and lastly, it elaborates on how this can constitute alternative CSR initiatives
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