192 research outputs found

    Combining the bulk transfer formulation and surface renewal analysis for estimating the sensible heat flux without involving the parameter KB-1

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    The single‐source bulk transfer formulation (based on the Monin‐Obukhov Similarity Theory, MOST) has been used to estimate the sensible heat flux, H, in the framework of remote sensing over homogeneous surfaces (HMOST). The latter involves the canopy parameter, , which is difficult to parameterize. Over short and dense grass at a site influenced by regional advection of sensible heat flux, HMOST with  = 2 (i.e., the value recommended) correlated strongly with the H measured using the Eddy Covariance, EC, method, HEC. However, it overestimated HEC by 50% under stable conditions for samples showing a local air temperature gradient larger than the measurement error, 0.4 km−1. Combining MOST and Surface Renewal analysis, three methods of estimating H that avoid dependency have been derived. These new expressions explain the variability of H versus , where is the friction velocity, is the radiometric surface temperature, and is the air temperature at height, z. At two measurement heights, the three methods performed excellently. One of the methods developed required the same readily/commonly available inputs as HMOST due to the fact that the ratio between and the ramp amplitude was found fairly constant under stable and unstable cases. Over homogeneous canopies, at a site influenced by regional advection of sensible heat flux, the methods proposed are an alternative to the traditional bulk transfer method because they are reliable, exempt of calibration against the EC method, and are comparable or identical in cost of application. It is suggested that the methodology may be useful over bare soil and sparse vegetation.This research was funded by CERESS project AGL2011–30498 (Ministerio de Economía y Competitividad of Spain, cofunded FEDER), CGL2012–37416‐C04‐01 (Ministerio de Ciencia y Innovación of Spain), and CEI Iberus, 2014 (Proyecto financiado por el Ministerio de Educación en el marco del Programa Campus de Excelencia Internacional of Spain)

    Doing descriptive phenomenological data collection in sport psychology research

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    Researchers in the field of sport psychology have begun to highlight the potential of phenomenological ap-proaches in recognising subjective experience and the essential structure of experience. Despite this, phenom-enology has been used inconsistently in the sport psychology literature thus far. Therefore, the aim of this paper is to provide theoretically informed practical guidelines for researchers who wish to employ the descrip-tive phenomenological interview in their studies. The recommended guidelines will be supported by under-pinning theory and brief personal accounts. An argument will also be presented for the potential that descrip-tive phenomenology holds in creating new knowledge through rich description. In doing so, it is hoped that this method will be utilised appropriately in future sport psychology research to not only strengthen and diver-sify the existing literature, but also the knowledge of practitioners working within the applied world of profes-sional sport

    Communities of practice: a systematic review and meta-synthesis of what it means and how it really works among nursing students and novices

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    Aims and Objectives: To evaluate the enablers, barriers and impact that communities of practice have on novice nurses and students learning to become registered nurses.Background: Communities of practice have formed the basis for conceptualising the process of learning that occurs among groups of people within a place of work-a mainstay of healthcare practice. There is a dearth of literature that focuses specifically on the outcomes from student and novice engagement with existing communities of practice.Design: Systematic review and Meta-synthesis.Methods: MEDLINE, PubMed, EMBASE, CINAHL, ProQuest, Scopus and PsycINFO databases were accessed between 1997-2019. The screening and selection of studies were based on eligibility criteria and methodological quality assessment using the Critical Appraisal Skills Programme tool for qualitative research. Meta-synthesis was grounded in the original experiences and collectively synthesised into meaningful themes. The review follows the PRISMA reporting guidelines and PRISMA checklist.Results: The findings highlight three major themes and included enablers for successful communities of practice, barriers to successful communities of practice, and success in action as described by students and novice nurses.Discussion: We suggest successful communities of practice occur when safe and supported spaces ensure students and novices feel comfortable to experiment with their learning, and we emphasise the benefits of having more novice nurses situated within close proximity and under the direct influence of the established practices of more experienced or core group of peers.Relevance to Clinical Practice: Communities of practice that function successfully create an environment that prioritises the embedding of novices into the broader group. In so doing, students and novice nurses feel supported, welcomed, empowered, and able to make the transition from student to colleague and novice nurse to more experienced nurse. It allows them to experiment with ever new ways of fulfilling the role, while aiding better clinical outcomes

    The lived experience of discrimination by white women in committed interracial relationships with black men

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    Abstract: This study explores the experiences of discrimination by white women in committed interracial relationships with black men within the South African context from a descriptive phenomenological perspective. Three white females in committed interracial relationships with black males were recruited and interviewed. Open-ended interviews were conducted in order to elicit rich and in-depth first-person descriptions of the participants’ lived experiences of discrimination as a result of being in committed interracial relationships. The data analysis entailed a descriptive phenomenological content analysis and description. The results of this study suggest that white women in committed interracial relationships with black men experienced discrimination in various contexts where discrimination manifests as either a negative or a positive encounter; in addition, discrimination evokes various emotional responses and is coped with in either maladaptive or adaptive ways. Finally the experience of discrimination, although personal, necessarily impacts on the interracial relationship. Discrimination experienced by white women in committed interracial relationships with black men is thus multi-layered and both an intra-personal and inter-personal phenomenon

    The Possibilities of Phenomenology for Organizational Research

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    Qualitative researchers have developed and employed a variety of phenomenological methodologies to examine individuals’ experiences. However, there is little guidance to help researchers choose between these variations to meet the specific needs of their studies. The purpose of this article is to illuminate the scope and value of phenomenology by developing a typology that classifies and contrasts five popular phenomenological methodologies. By explicating each methodology’s differing assumptions, aims, and analytical steps, the article generates a series of guidelines to inform researchers’ selections. Subsequent sections distinguish the family of phenomenological methodologies from other qualitative methodologies, such as narrative analysis and autoethnography. The article then identifies institutional work and organizational identity as topical bodies of research with particular research needs that phenomenology could address

    Letter to the Editor

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