Using Corpus-Based Approaches in a System for Multilingual Information Retrieval     

Martin Braschler  Peter Schäuble 《Information Retrieval》2000,3(3):273-284

We present a system for multilingual information retrieval that allows users to formulate queries in their preferred language and retrieve relevant information from a collection containing documents in multiple languages. The system is based on a process of document level alignments, where documents of different languages are paired according to their similarity. The resulting mapping allows us to produce a multilingual comparable corpus. Such a corpus has multiple interesting applications. It allows us to build a data structure for query translation in cross-language information retrieval (CLIR). Moreover, we also perform pseudo relevance feedback on the alignments to improve our retrieval results. And finally, multiple retrieval runs can be merged into one unified result list. The resulting system is inexpensive, adaptable to domain-specific collections and new languages and has performed very well at the TREC-7 conference CLIR system comparison.  相似文献   

Using the Co-occurrence of Words for Retrieval Weighting     

Elke Mittendorf  Bojidar Mateev  Peter Schäuble 《Information Retrieval》2000,3(3):243-251

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Einführung in die Bewegungslehre des Sports     

Ulrich Göhner  Joachim Mester 《Sportwissenschaft》2000,30(1):115-118

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Maternal Depressive Symptoms During the Pre- and Postnatal Periods and Infant Attention to Emotional Faces     

Eeva-Leena Kataja  Linnea Karlsson  Jukka M. Leppänen  Juho Pelto  Tuomo Häikiö  Saara Nolvi  Henri Pesonen  Christine E. Parsons  Jukka Hyönä  Hasse Karlsson 《Child development》2020,91(2):e475-e480

We examined how infants’ attentional disengagement from happy, fearful, neutral, and phase-scrambled faces at 8 months, as assessed by eye tracking, is associated with trajectories of maternal depressive symptoms from early pregnancy to 6 months postpartum (decreasing n = 48, increasing n = 34, and consistently low symptom levels n = 280). The sample (mother–infant dyads belonging to a larger FinnBrain Birth Cohort Study) was collected between 5/2013–6/2016. The overall disengagement probability from faces to distractors was not related to maternal depressive symptoms, but fear bias was heightened in infants whose mothers reported decreasing or increasing depressive symptoms. Exacerbated attention to fearful faces in infants of mothers with depressive symptoms may be independent of the timing of the symptoms in the pre- and postnatal stages.  相似文献   

The Roles of Group Status and Group Membership in the Practice of Hypodescent     

Steven O. Roberts  Arnold K. Ho  Selin Gülgöz  Jacqueline Berka  Susan A. Gelman 《Child development》2020,91(3):e721-e732

Hypodescent emerged in U.S. history to reinforce racial hierarchy. Research suggests that among contemporary U.S. adults, hypodescent continues to shape social perception. Among U.S. children, however, hypodescent is less likely to be endorsed. Here, we tested for hypodescent by introducing U.S. children (ages 4–9) and adults (N = 273) to hierarchically ordered novel groups (one was high status and another was low status) and then to a child who had one parent from each group. In Study 1, we presented the groups in a third-party context. In Study 2, we randomly assigned participants to the high-status or the low-status group. Across both studies, participants did not reliably endorse hypodescent, raising questions as to what elicits this practice.  相似文献   

Phenoxyethanol-Based Embalming for Anatomy Teaching: An 18 Years' Experience with Crosado Embalming at the University of Otago in New Zealand     

Brynley Crosado  Sabine Löffler  Benjamin Ondruschka  Ming Zhang  Johann Zwirner  Niels Hammer 《Anatomical sciences education》2020,13(6):778-793

Embalming fixatives such as formaldehyde and phenol have been associated with occupational health hazards. While anatomists aim at replacing these chemicals, this seems presently unfeasible in particular for formaldehyde. Furthermore, fixation protocols usually require well-equipped facilities with highly experienced staff to achieve good fixation results in spite of only a minimal use of formaldehyde. Combining these aspects, a technique robust enough to be carried out by morticians is presented, resulting in durable tissues with minimal formaldehyde use. An embalming protocol involving phenoxyethanol was established, using concentrations of 7 and 1.5 Vol% of phenoxyethanol in the fixative and the conservation fluid, respectively. Visual, haptic, histological, and biomechanical properties and their perceived potential to positively influence student learning outcomes were compared to standard embalming techniques. The phenoxyethanol technique provides esthetic, durable, and odorless tissues. Bleaching is less pronounced compared to ethanol- or formaldehyde-based protocols. The tissues remain pliable following the phenoxyethanol-based embalming and can be used for biomechanical experiments to some extent. Phenoxyethanol-fixed tissues are well suited for undergraduate teaching with perceived positive learning outcomes and partly for postgraduate training. Phenoxyethanol tissues provide the option to obtain well-preserved histology samples, similar to those derived from formaldehyde. The provided protocol helps replace the use of phenol and formaldehyde for conservation purposes and minimizes the use of formaldehyde for the initial injection fixation. Phenoxyethanol-based embalming forms an effective alternative to standard embalming techniques for human cadavers. It is simple to use, allowing fixation procedures to be carried out in less sophisticated facilities with non-anatomy staff.  相似文献   

Solving sport’s ‘relative age’ problem: a systematic review of proposed solutions     

Kelly Webdale  Joseph Baker  Jörg Schorer 《International review of sport and exercise psychology》2020,13(1):187-204

ABSTRACT

Though the existence of Relative Age Effects (RAEs) has been documented through a multitude of studies spanning various sports and levels of play, application of solutions related to RAEs has been limited. In this review, the strengths and weaknesses of various proposed solutions to RAEs in youth sport are considered. Our objective was to identify, collate, and disseminate a comprehensive list of solutions related to the prevalence of RAEs in youth sport. English language, peer-reviewed articles were searched using the SPORTDiscuss database. Keywords ‘relative age’, ‘relative age effect*’, and sport* were used to locate research articles. The inclusion criteria were the following: (1) publication date between January 1980 and December 2018; (2) solutions were suggested related to RAEs. Sixty-three peer-reviewed publications contained proposed solutions to RAEs. Many solutions have been proposed to address RAEs in sport. Most are theoretical and there has been no attempt to implement them. Future research should test possible proposed solutions to RAEs in sport. However, implementing these solutions has the potential to both positively and negatively affect career and life outcomes for those athletes involved. Therefore, it is important to be cautious in how these possible solutions are tested.  相似文献   

Flexibly scheduled early childhood education and care: experiences of Finnish parents and educators     

Anna Rönkä  Leena Turja  Kaisa Malinen  Mia Tammelin  Marjatta Kekkonen 《Early Years: An International Journal of Research and Development》2019,39(4):376-391

Abstract

This study focuses on flexibly scheduled early childhood education and care (ECEC), an institutional childcare service for Finnish families where both parents, or a single parent, work non-standard hours. Although many countries nowadays offer extended hours day care, only Finland has a publicly provided, law-based system guaranteeing ECEC during non-standard as well as standard hours. We explore, drawing on parental survey data, what kinds of families use such services and when. Furthermore, we utilise web-survey data obtained from early educators to find out what they report as the main challenges involved in implementing flexibly scheduled ECEC. The results showed that single-parent families and lower educated parents were over-represented among the families using flexibly scheduled ECEC. The unpredictability of working-life tends to spill over to ECEC. Due to varying parental work schedules, children have unique daily and weekly rhythms, which in turn impact on administration, pedagogical issues and meeting children’s needs.  相似文献   

From Green Revolution to Green Evolution: A Critique of the Political Myth of Averted Famine     

Pielke  Roger  Linnér  Björn-Ola 《Minerva》2019,57(3):265-291

This paper critiques the so-called “Green Revolution” as a political myth of averted famine. A “political myth,” among other functions, reflects a narrative structure that characterizes understandings of causality between policy action and outcome. As such, the details of a particular political myth elevate certain policy options (and families of policy options) over others. One important narrative strand of the political myths of the Green Revolution is a story of averted famine: in the 1950s and 1960s, scientists predicted a global crisis to emerge in the 1970s and beyond, created by a rapidly growing global population that would cause global famine as food supplies would not keep up with demand. The narrative posits that an intense period of technological innovation in agricultural productivity led to increasing crop yields which led to more food being produced, and the predicted crisis thus being averted. The fact that the world did not experience a global famine in the 1970s is cited as evidence in support of the narrative. Political myths need not necessarily be supported by evidence, but to the extent that they shape understandings of cause and effect in policymaking, political myths which are not grounded in evidence risk misleading policymakers and the public. We argue a political myth of the Green Revolution focused on averted famine is not well grounded in evidence and thus has potential to mislead to the extent it guides thinking and action related to technological innovation. We recommend an alternative narrative: The Green Evolution, in which sustainable improvements in agricultural productivity did not necessarily avert a global famine, but nonetheless profoundly shaped the modern world. More broadly, we argue that one of the key functions of the practice of technology assessment is to critique and to help create the political myths that preserve an evidence-grounded basis for connecting the cause and effect of policy action and practical outcomes.

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Outdoor adventures and adolescents’ mental health: daily screen time as a moderator of changes     

Michael Mutz  Johannes Müller  Arne Göring 《Journal of Adventure Education & Outdoor Learning》2019,19(1):56-66

Research provided ample evidence that excessive screen time (ST) in adolescence has detrimental effects on psychosocial health. This paper argues that structured outdoor programs can serve as an antidote to negative health impacts of exaggerated ST. For youth with a high level of regular ST, outdoor adventures imply a break with their ‘normal’ (mediatized) lifestyle, so that greater progress in mental health can potentially arise. This hypothesis is tested in a sample of adolescents, who took part in a 10-day outdoor program. Pre-to-post program mean comparisons for stress, hedonic balance and life satisfaction show significant positive changes. However, benefits of the program are markedly greater among youths with a high level of daily ST compared to youths with low-to-moderate levels.  相似文献