393 research outputs found

    Optimal recruitment system of candidates to schools

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    We generalize a well-known Gale–Shapley algorithm [4] concerning optimal assignment of candidates to schools. In the classical Gale–Shapley model we consider a set of schools (colleges) S, a set of candidates K, candidates’ preferences in S and schools’ preferences in the set K (represented by strict linear orders). We assume that each school has a quota q, i.e. q, is the maximal number of candidates which it can admit. We want to assign candidates to schools in such a way that some condition of stability (defined in [4]) is satisfied. In our generalized model schools’ preferences are represented by the socalled “rejection functions”. We introduce a generalized stability condition and formulate conditions under which the generalized G–S algorithm leads to stable and optimal assignments. Our results can be applied in practice, e.g., they can help in constructing computerized recruitment systems, in which we want to incorporate “soft” quotas and ties between candidates.recruitment system, two-sided matching problem, Gale–Shapley algorithm

    Evaluating and Organizing Thinking Tools in Relationship to the CPS Framework

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    Evaluating and Organizing Thinking Tools in Relationship to the CPS Framework This project surveyed, analyzed and organized thinking tools drawn from several areas of theory and practice within the new proposed framework for Creative Problem Solving (CPS). The tools were drawn from a diverse set of literature and organized in accordance with the new skillbased version of CPS. The literature review focused on Total Quality Management (TQM), Strategic Management, Problem Solving, Decision Making, and Creativity Processes and Methods, other than CPS. Forty-four thinking tools, other than the ‘classic’ CPS tools, were collected, analyzed, described and categorized within the seven steps of the new CPS framework, according to the main categories of divergent and convergent thinking. Implications for future studies suggested the opportunity to widen the search for more thinking tools, by achieving a higher balance between divergent and convergent tools within each step of the CPS framework, as well as the need to apply these thinking tools within the facilitation of the CPS process

    Coyote Foraging Ecology, Vigilance, and Behavioral Cascades in Response to Gray Wolf Reintroduction in Yellowstone National Park

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    Vigilance behavior can aid in the detection of predators and may also play a role in observation of conspecifics, in food acquisition, and in the prevention of kleptoparasitism. However, in most occasions, vigilance is most important as an antipredator function. Generally, factors that increase the risk of predation also increase the amount of vigilance. We examined whether the reintroduction of the large predator, the wolf, in Yellowstone National Park (YNP) would influence coyote vigilance and foraging ecology. From December 1997 to July 2000, we collected 1743 h of coyote activity budgets. Coyote home ranges occurred within wolf territories (termed high-use or nonbuffer zone areas) and also between them in buffer zones. In high wolf use areas as well as when wolves were present, coyotes fed on carcasses much more; however, they increased the amount of vigilance and decreased rest to prevent predation. Wolf kills may provide a quick source of food and be energetically advantageous to coyotes; however, costs include increased vigilance, decreased rest, and a higher predation risk. Vigilance and avoidance behavioral responses to the reintroduction of large predators may ultimately be more common outcomes than actual killing by competing carnivores of prey. Keystone carnivore reintroductions have a variety of cascading effects throughout the ecosystem and can be driven by both numeric responses (trophic cascades) and behavioral responses ( behavioral cascades ). Behavioral cascades resulting from increased vigilance or spatial changes may lead ultimately to numeric changes and trophic cascades

    An Investigation of the Additive Benefits of Parent Dialogic Reading Techniques in Older Preschool Children

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    This study examined the additive benefit of parent dialogic reading techniques in older, high-risk preschool children using multiple baseline design across participants, a single subject research design, as was as well as pre-test and post-test measures. Five preschoolers age-eligible to begin kindergarten the following school year participated. The Peabody Picture Vocabulary Test, Fourth Edition (PPVT-4) and Expressive Vocabulary Test, Second Edition (EVT-2) were administered pre-intervention and post-intervention implementation. Consistent with multiple baseline design, all students received weekly progress monitoring using the Picture Naming (PN) Individual Growth and Development Indicator (IGDI) throughout the entire investigation. Caregivers received in-person video-based training in dialogic reading techniques. They were then directed to implement dialogic reading strategies within their homes when reading with their children a minimum of three times per week for fifteen minutes per session over a six-week intervention period. It was hypothesized that children receiving home-based dialogic reading support would demonstrate greater expressive and receptive vocabulary skills than those participating in preschool program alone. Visual analysis of graphic data within conditions and between adjacent conditions was utilized to analyze the research questions. Results of the study supported the hypotheses but did not confirm them. Children who received home-based dialogic reading support demonstrated expressive and receptive vocabulary skill growth but no abrupt change occurred immediately after introducing the dialogic reading intervention

    New Generation of Multi-Bands S-X-Ka Ground Station for Smallsats

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    The LEGION 400 is the new generation of 4m-class antenna system released by Safran Data Systems. Originally designed for Mega-Constellations, the LEGION 400 benefits from a unique tri-band S/X/Ka concentric feed, patented by Safran, combined with a lean and an ultra accurate pedestal. Safran Data Systems offers its customers total flexibility in building up a scalable ground segment for the long term, with a true one-stop-shop for the complete system, including antenna, radome, RF, baseband, station Monitoring & Control as well as scheduler. The LEGION 400 is applicable whether you need to support smallsats, launch vehicles or telecom constellations

    Isolation and characterization of a putative collagen receptor from Staphylococcus aureus strain Cowan 1.

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    In a previous study we demonstrated that cells of Staphylococcus aureus strain Cowan bind 125I-collagen in a receptor-ligand type of interaction (Speziale, P., Raucci, G., Visai, L., Switalski, L.M., Timpl, R., and Hook, M. (1986) J. Bacteriol. 167, 77-81). In the present communication we report on the isolation and preliminary characterization of a putative collagen receptor from a lysate of S. aureus strain Cowan. Antibodies raised against a collagen receptor positive strain inhibit the binding of 125I-collagen to bacterial cells, whereas antibodies raised against a collagen receptor negative strain were without effect. Solubilized cell surface components did not exhibit any measurable affinity for collagen-Sepharose. However, the inhibitory effect of the antibodies against bacterial cells was neutralized by the lysate from a receptor-positive but not receptor-negative strain. A collagen receptor assay was designed based on this observation and used to develop a receptor purification protocol involving anion exchange chromatography, ammonium sulfate precipitation, and gel chromatography. Using this procedure a protein with an apparent Mr of 135,000 was purified. This protein which was present on a collagen receptor-positive strain but not on a receptor-negative strain could completely neutralize the inhibitory activity of the antibodies raised against S. aureus strain Cowan. Furthermore, antibodies raised against the 135-kDa protein inhibited the binding of collagen to bacteria, and this protein is tentatively identified as a collagen receptor

    The Modern History of Global Food

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    Can we trace the long history of globalization through the movement of foods around the world? History students Leland Cook, Margaret Dickinson, Natalie Fulk, and Noah Switalski will share their insights from collaborative research with Dr. Lauren Janes during the summer of 2016. Each global food--potatoes, sugar, curry, and rice--tells a story of connectivity across continents and cultures, showing how our lives, diets, and economies were shaped by centuries of meaningful interactions around food

    A organização como família: Considerações para esta metáfora.

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    TCC (graduação) - Universidade Federal de Santa Catarina, Centro Sócio Econômico, Curso de Administração.As metáforas são escolhas do/a interlocutor/a de um discurso utilizadas para preencher lacunas lexicais ou explicar de forma mais simples experiências da vida cotidiana. O uso das metáforas nas ciências sociais tem ampla discussão, e nas ciências da administração Gareth Morgan tem destaque pelo seu emprego na descrição das teorias organizacionais. Por se tratar de uma escolha, as metáforas carregam um caráter ideológico a quem recebe a mensagem. Neste ensaio teórico, a partir da análise de Jonathan Charteris-Black, buscou-se evidenciar como o emprego da metáfora da organização como família tem influenciado a exclusão de pessoas dos ambientes organizacionais. É realizada também uma aproximação dos campos da teoria organizacional e os estudos de gênero a fim de incorporar uma nova visão à uma nova metáfora.Metaphors are choices from the speaker of a discourse used to fill lexical gaps or explain more simply experiences of everyday life. The use of metaphors in the social sciences has wide discussion, and in the management sciences Gareth Morgan stands out for his use in describing organizational theories. Because It is a choice, metaphors carry an ideological character to whoever receives the message. In this theoretical essay, based on the critical analysis of Jonathan Charteris-Black, it is sought to show how as the use of the metaphor of the organization as a family has influenced the exclusion of people from organizational environments. It also brings together the fields of organizational theory and gender studies in order to incorporate a new vision into a new metaphor

    Assessing the Advising Experience

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    Newborn Hearing Screenings for Babies Born at Home: Report from an Initiative in Michigan

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    Objective: Babies born in an out-of-hospital setting (e.g., homebirth) often do not receive a universal newborn hearing screening (UNHS). The purpose of this study was to evaluate the effect of providing training and equipment for newborn hearing screening to midwives who attend homebirths. Study Design: Midwives from around the state of Michigan were invited to participate in a two-part UNHS training. Hearing screening data from all midwives who attended homebirths (N=112) during the 2015 and 2016 calendar years were analyzed using a two-level multilevel model. Estimated odds of babies being screened were calculated based on midwife group. Results: Having a midwife who hosted an AABR machine at her practice increased the likelihood of receiving a screening by 39.37 times. Having a midwife who had access to an AABR machine increased the likelihood of receiving a screening by 8.57 times. Having a midwife who received focused education about the importance of newborn hearing screening increased the likelihood of receiving a screening by 10.82 times. Conclusion: Providing UNHS equipment to midwives significantly increases the likelihood that babies born at home will receive a hearing screening at birth. This is evidence for the continued outreach and inclusion of midwives in UNHS programs
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