7,010 research outputs found

    The effects of strain, reproductive condition, and strain of placenta donor on placentophagia in nonpregnant mice

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    The effects on placentophagia of strain, reproductive condition, and strain of placenta donor were observed in nonpregnant mice. Mice of the C57BL/6By and BALB/cBy strains were exposed to placentas of either strain after either no previous parturitional experience, one parturitional experience without nursing experience, or one parturitional experience with nursing experience. There was a significant effect of strain, a significant effect of reproductive condition, but no significant effect of strain of placenta donor. There was a significant interaction between strain and reproductive condition, but no significant interactions with placenta strain. It was inferred that the ability of a mouse to acquire and utilize relevant stimuli during and after parturition, in order to produce an emancipation of placentophagia from the physiological controls associated with parturition, is influenced by genotype

    A qualitative evaluation of home based contraceptive and sexual health care for teenage mothers

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    This paper reports on the findings from a qualitative study exploring the experiences of teenage mothers using a nurse-led, home-based contraceptive service designed to prevent repeat unplanned pregnancies. The aim was to understand if, and how the service was effective in equipping teenage mothers to make informed choices about contraception, thus preventing a second pregnancy. Unplanned teenage pregnancy remains a significant focus of health and social policy in the United Kingdom (UK). Despite the long-term pattern of declining conception rates, the UK continues to report higher rates than comparable countries elsewhere in Europe. Current estimates suggest that approximately one fifth of births amongst under 18ā€™s are repeat pregnancies (Teenage Pregnancy Independent Advisory Group, 2009). Services that are designed to reduce second unplanned pregnancies are an important element in promoting teenage sexual health. However, there has been no UK research that explores this kind of service and the experiences of service users. We conducted a qualitative interview study. From 2013ā€“2014 we interviewed 40 teenage mothers who had engaged with the nurse-led, home-based contraceptive service. The data demonstrates that the service was effective in preventing repeat pregnancies in a number of cases. Among the aspects of the service which were found to contribute to its effectiveness were privacy, convenience, flexibility, appropriately timed access, the non-judgemental attitude of staff and ongoing support

    The Beacon Community Centers Middle School Initiative: Final Report on Implementation and Youth Experience in the Initiative

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    The report evaluates New York City's Beacon Middle School Initiative, which was launched to increase services to middle-grades youth through programs in academics, life skills, career awareness, civic engagement, physical health, and arts and culture. The report describes youth characteristics and participation, program features, connections to school and communities, youth reports of their experiences, and relationships between program characteristics and youth outcomes

    Estimating Tropical Forest Structure Using a Terrestrial Lidar

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    Forest structure comprises numerous quantifiable biometric components and characteristics, which include tree geometry and stand architecture. These structural components are important in the understanding of the past and future trajectories of these biomes. Tropical forests are often considered the most structurally complex and yet least understood of forested ecosystems. New technologies have provided novel avenues for quantifying biometric properties of forested ecosystems, one of which is LIght Detection And Ranging (lidar). This sensor can be deployed on satellite, aircraft, unmanned aerial vehicles, and terrestrial platforms. In this study we examined the efficacy of a terrestrial lidar scanner (TLS) system in a tropical forest to estimate forest structure. Our study was conducted in January 2012 at La Selva, Costa Rica at twenty locations in a predominantly undisturbed forest. At these locations we collected field measured biometric attributes using a variable plot design. We also collected TLS data from the center of each plot. Using this data we developed relative vegetation profiles (RVPs) and calculated a series of parameters including entropy, Fast Fourier Transform (FFT), number of layers and plant area index to develop statistical relationships with field data.We developed statistical models using a series of multiple linear regressions, all of which converged on significant relationships with the strongest relationship being for mean crown depth (r2 = 0.88, p \u3c 0.001, RMSE = 1.04 m). Tree density was found to have the poorest significant relationship (r2 = 0.50, p \u3c 0.01, RMSE = 153.28 n ha-1). We found a significant relationship between basal area and lidar metrics (r2 = 0.75, p \u3c 0.001, RMSE = 3.76 number ha-1). Parameters selected in our models varied, thus indicating the potential relevance of multiple features in canopy profiles and geometry that are related to field-measured structure. Models for biomass estimation included structural canopy variables in addition to height metrics. Our work indicates that vegetation profiles from TLS data can provide useful information on forest structure

    Defining and Measuring Excellence in the Changing World of Higher Education: Case Stories from Five Colleges of Education

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    This paper presents a collection of case stories from five Educator Preparation Programs (EPPs) within colleges of education, four from institutions in Texas and one from California, to present a micro cross-sectional narrative interpretation of what constitutes excellence in educator preparation. The broad framework utilized in this interpretation focuses on the individual approaches used by each institution for creating and sustaining positive cultures of data-informed decision-making, with the ultimate objective of continuous program improvement, while also meeting the accreditation expectations of each institution

    A Survey on Ear Biometrics

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    Recognizing people by their ear has recently received significant attention in the literature. Several reasons account for this trend: first, ear recognition does not suffer from some problems associated with other non contact biometrics, such as face recognition; second, it is the most promising candidate for combination with the face in the context of multi-pose face recognition; and third, the ear can be used for human recognition in surveillance videos where the face may be occluded completely or in part. Further, the ear appears to degrade little with age. Even though, current ear detection and recognition systems have reached a certain level of maturity, their success is limited to controlled indoor conditions. In addition to variation in illumination, other open research problems include hair occlusion; earprint forensics; ear symmetry; ear classification; and ear individuality. This paper provides a detailed survey of research conducted in ear detection and recognition. It provides an up-to-date review of the existing literature revealing the current state-of-art for not only those who are working in this area but also for those who might exploit this new approach. Furthermore, it offers insights into some unsolved ear recognition problems as well as ear databases available for researchers

    Encouraging Corporate Social Responsibility in Rayong, Thailand

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    A review of literature revealed a gap in research on effective ways to promote corporate social responsibility in the Rayong province of Thailand where the Integrated Refinery and Petrochemical Company (IRPC) is located. This case study used purposeful sampling of eight key informants in a CSR program designed to help restore the environment surrounding the refinery, increase cooperation and good will between IRPC and surrounding villages, and make better use of local resources.https://scholarworks.waldenu.edu/archivedposters/1056/thumbnail.jp

    CARE Framework

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    Domestic Violence Prevention in Gauteng, South Africa

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    A review of literature revealed a gap in research on effective ways to promote domestic violence prevention strategies in the region on the outskirts of Johannesburg, South Africa, where unofficial settlements are being built near established communities and contributing to the problem. This case study used purposeful sampling of eight key informants in a prevention program designed to both implement strategies to prevent domestic violence and assist those who have experienced violent acts.https://scholarworks.waldenu.edu/archivedposters/1091/thumbnail.jp

    Encouraging Education in Kpanlori, Ghana

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    A review of literature revealed a gap in research on effective ways to promote education in the far eastern rural areas of Ghana where the village of Kpanlori is located. This case study used purposeful sampling of eight key informants in a food security program designed to increase enrollment in primary school in Kpanlori. Findings revealed the importance of addressing food insecurity issues and tradition in order to increase regular school attendance.https://scholarworks.waldenu.edu/archivedposters/1022/thumbnail.jp
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