240 research outputs found

    The grasses of Iowa, part II.

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    Part 1 published as Bulletin no. 1 of the Iowa Geological survey."Physiography and geology, by Dr. H.F. Bain": p. [359]-373."Partial bibliography pertaining to grasses, by Harriette S. Kellogg and L.H. Pammel": p. [407]-423.Mode of access: Internet

    Cellular-responses of migratory grasshoppers (melanoplus-sanguinipes F) and African desert locusts (schistocerca-gregaria L) to diplotriaena-tricuspis (nematoda, diplotriaenoidea)

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    PT: J; CR: ANDERSON RC, 1957, CANADIAN J ZOOLOGY, V35, P15 ANDERSON RC, 1962, CAN J ZOOL, V40, P1175 ANDERSON RC, 1976, CIH KEYS NEMATODE PA, P59 BAIN O, 1969, ANN PARASITOLOGIE, V44, P595 BAIN O, 1973, ANN PARASITOLOGIE, V48, P81 BRELJE NA, 1974, J EC ENTOMOL, V67, P134 CAWTHORN RJ, 1980, CAN J ZOOL, V58, P94 LAVOIPIERRE MM, 1958, ANN TROP MED PARASIT, V52, P103 MILLER BJ, 1937, MENDEL B DEC, P5 PICKFORD R, 1969, CAN ENTOMOL, V101, P894 POINAR GO, 1974, INT J PARASITOL, V4, P133 SALT G, 1968, BIOL REV, V43, P200 SALT G, 1970, CELLULAR DEFENSE MEC SCHACHER JF, 1968, J PARASITOL, V54, P869 SEURAU C, 1977, ANN PARASITOL HUM CO, V52, P457 SEUREAU C, 1973, Z PARASITENKD, V41, P119 SMITH DS, 1968, INSECT CELLS SPRATT DM, 1972, INT J PARASITOL, V2, P201 SPRATT DM, 1974, INT J PARASITOL, V4, P477 WIGGLESWORTH VB, 1972, PRINCIPLES INSECT PH WILLIAMS P, 1961, ANN TROP MED PARASIT, V55, P1 WUEST J, 1978, CELL TISSUE RES, V188, P481; NR: 22; TC: 2; J9: CAN J ZOOL; PG: 5; GA: JH185Source type: Electronic(1

    Entry and Exit of Physicians in a two-tiered public/private Health Care System

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    Firm turnover has recently attracted increased interest in economic research. The entry of new firms increases competition and promises efficiency gains. Moreover, changes in the market structure influence productivity growth, because firm entry usually leads to increased innovation. The health care market exhibits important differences as compared to other markets, including various forms of market failure and, as a consequence, extensive market regulation. Thus, the economic effects of entries and exits in health care markets are less obvious. The following paper studies the determinants of entry and exit decisions of physicians in the private sector of the outpatient part of the Austrian health care system. We apply a Poisson panel estimation to a data set of 2,379 local communities and 121 districts in Austria in the time period 2002 - 2008. We are particularly interested in the question how public physicians (GPs/specialists) and their private counterparts influence the entrance and exit of private physicians. We find a significantly negative effect of existing capacities, measured by both private and public physician density of the same specialty, on the entry of new private physicians. On the contrary, we find a significantly positive effect of private GPs on the entry of private specialists. Interestingly, this cooperation/network effect also works in the other direction, as a higher density of private specialists increases the probability of the market entry of private GPs. Based on the results of previous literature, we thus conclude that private physicians establish networks to cooperate in terms of mutual referrals etc. Our estimations for market exits basically confirm the entry results, as higher competitive forces positively influence the market exit of private physicians.Entry, Exit, Health Care, Physician location

    Handbook for Learning-centred evaluation of Computer-facilitated learning projects in higher education

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    This handbook supports a project funded by the Australian Government Committee for University Teaching and Staff Development (CUTSD). The amended project title is “Staff Development in Evaluation of Technology-based Teaching Development Projects: An Action Inquiry Approach”. The project is hosted by Murdoch University on behalf of the Australasian Society for Computers in Learning in Tertiary Education (ASCILITE), as a consortium of 11 universities. The rationale of the project is to guide a group of university staff through the evaluation of a Computer-facilitated Learning (CFL1) project by a process of action inquiry and mentoring, supported by the practical and theoretical material contained in this handbook

    Disabling cities

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    This is a pre-copyedited, author-produced version of a book chapter accepted for publication in: Bain, A.L., & Peake, L. (Eds.) (2017). Urbanization in a Global Context. Oxford University Press, following peer review. The version of record - N. Worth with V. Chouinard & L. Simard-Gagnon (2017). ‘Disabling cities’ Urbanization in a Global Context: A Canadian Perspective Linda Peake & Alison Bain (eds.) OUP - is available online at: https://www.oupcanada.com/catalog/9780199021536.htmlGeographic research on disability and cities is wide-ranging and encompasses the lives of people dealing with disability, physical impairment, and issues of mental ill health. This chapter focuses on what makes cities more and less disabling for persons with physical and mental health impairments whereby “disabling” refers to processes of physical and social exclusion arising from physical and social barriers to full participation in city life. It also engages with different ways of understanding disability (i.e., the medical, social, and embodied social models of disability) and the implications of these for whether and how cities need to change. A review of the literature on cities and disability serves to highlight a primary focus on issues of physical impairment and then is followed by an examination of processes shaping the lives of urban residents with mental health impairments.Banting Fellowship Fonds de Recherche du Québec—Société et Culture Social Sciences and Humanities Research Council of Canad

    Using Computed Tomography to Assist With Diagnosis of Avascular Necrosis Complicating Chronic Scaphoid Nonunion

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    PurposeThe primary aim of our study was to investigate use of long axis computed tomography (CT) in predicting avascular necrosis of the proximal pole of the scaphoid and subsequent fracture nonunion after internal fixation. In addition, we describe a new technique of measuring the position of a scaphoid fracture and provide data on its reproducibility.MethodsThirty-one patients operated on by the senior author for delayed union or nonunion of scaphoid fracture were included. Preoperative CT scans were independently assessed for increased radiodensity of the proximal pole, converging trabeculae, degree of deformity, comminution, and fracture position. Intraoperative biopsies of the proximal pole were obtained and histologically assessed for evidence of avascular necrosis. The radiologic variables were statistically compared with the histologic findings. The presence of avascular necrosis was also compared with postoperative union status, identified on longitudinal CT scans.ResultsPreoperative CT features that statistically correlated with histologic evidence of avascular necrosis were increased radiodensity of the proximal pole and the absence of any converging trabeculae between the fracture fragments. The radiologic changes of avascular necrosis and the histologic confirmation of avascular necrosis were associated with persistent nonunion.ConclusionsPreoperative longitudinal CT of scaphoid nonunion is of great value in identifying avascular necrosis and predicting subsequent fracture union. If avascular necrosis is suspected based on preoperative CT, management options include vascularized bone grafts and bone morphogenic protein for younger patients and limited wrist arthrodesis for older patients.Type of study/level of evidenceDiagnostic II.Michael L. Smith, Gregory I. Bain, Nick Chabrel, Perry Turner, Chris Carter and John Fieldhttp://www.elsevier.com/wps/find/journaldescription.cws_home/623145/description#descriptio

    Report of the Association Internationale pour l'Etude des Argiles (AIPEA) Nomenclature Committee for 2001: order, disorder and crystallinity in phyllosilicates and the use of the 'Crystallinity Index'

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    The purpose of this report is to describe the appropriate use of indices relating to crystallinity, such as the ‘crystallinity index’, the ‘Hinckley index’, the ‘Kübler index’, and the ‘Árkai index’. A ‘crystalline’ solid is defined as a solid consisting of atoms, ions or molecules packed together in a periodic arrangement. A ‘crystallinity index’ is purported to be a measure of crystallinity, although there is uncertainty about what this means (see below). This report discusses briefly the nature of order, disorder and crystallinity in phyllo-silicates and discusses why the use of a ‘crystallinity index’ should be avoided. If possible, it is suggested that indices be referred to using the name of the author who originally described the parameter, e.g.‘Hinckley index’ or ‘Kübler index’, or in honor of a researcher who investigated the importance of the parameter extensively, e.g. ‘Árkai index’.In contrast to a crystalline solid, an ‘amorphous’ solid is one in which the constituent components are arranged randomly. However, many variations occur between the two extremes of crystalline vs. amorphous. For example, one type of amorphous material might consist simply of atoms showing no order and no periodicity. Alternatively, another amorphous material may consist of atoms arranged, for example, as groups of tetrahedra (i.e. limited order) with each group displaced or rotated (e.g. without periodicity) relative to another. Thus, this latter material is nearly entirely amorphous, but differs from the first. Likewise, disturbance of order and periodicity may occur in crystalline materials. The terms ‘order’ and ‘disorder’ refer to the collective nature or degree of such disturbances. Although seemingly simple notions, ‘crystalline’ and ‘amorphous’ are complex concepts.Crystalline substances may show a periodic internal structure based on direction. For example, two-dimensional periodicity is common in phyllosilicates where two adjacent sheets or layers must mesh. For example, in serpentine, ..

    Coauthor prediction for junior researchers

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    Research collaboration can bring in different perspectives and generate more productive results. However, finding an appropriate collaborator can be difficult due to the lacking of sufficient information. Link prediction is a related technique for collaborator discovery; but its focus has been mostly on the core authors who have relatively more publications. We argue that junior researchers actually need more help in finding collaborators. Thus, in this paper, we focus on coauthor prediction for junior researchers. Most of the previous works on coauthor prediction considered global network feature and local network feature separately, or tried to combine local network feature and content feature. But we found a significant improvement by simply combing local network feature and global network feature. We further developed a regularization based approach to incorporate multiple features simultaneously. Experimental results demonstrated that this approach outperformed the simple linear combination of multiple features. We further showed that content features, which were proved to be useful in link prediction, can be easily integrated into our regularization approach. © 2013 Springer-Verlag
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