Hopes for the future: demographic and personal resources associated with self-perceived employability and actual employment among senior year students     

Jonathan Kasler  Leehu Zysberg  Nofar Harel 《Journal of Education & Work》2017,30(8):881-892

Undergraduates approaching completion of their studies may embrace the prospect of entry into the world of work as a challenge or conversely, may view it with trepidation. This study explores three major personal resources that may be associated with how young undergraduates view their future employability: perceived hope, grit and emotional intelligence. Demographics associated in the literature with perceived chance of employment – gender, age and having a learning disability – were also included in the study. The participants were college students in their senior year (n = 584), studying in a variety of undergraduate programmes. Results show that perceived hope and grit were positively associated with perceived employability whereas the relationship with emotional intelligence was more complex. None of the demographics associated with perceived employability.  相似文献   

From nature deficit to outdoor exploration: curriculum for sustainability in Vermont’s public schools     

Jonathan Silverman 《Journal of Adventure Education & Outdoor Learning》2017,17(3):258-273

Children today are spending less time than ever outdoors, contributing to a culture of environmental apathy and separation from the natural world. In the growing field of environmental education, teachers are challenged to introduce the outdoors into their curriculum. In Vermont, some public school teachers have successfully implemented environmental education into their practice in a variety of interesting ways. This paper analyzes a series of teacher interviews and observations in Vermont public schools to identify successful strategies and pedagogies being utilized for environmental education. Several common themes emerged from this study, including place-based education, hands-on exploration, and free choice learning.  相似文献   

In Search of a ‘Good Story’ for the History of Medicine     

Jonathan Simon 《Metascience》2005,14(3):427-429

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Deterministic Chance?     

Schaffer  Jonathan 《The British journal for the philosophy of science》2007,58(2):113-140

Can there be deterministic chance? That is, can there be objectivechance values other than 0 or 1, in a deterministic world? Iwill argue that the answer is no. In a deterministic world,the only function that can play the role of chance is one thatoutputs just 0s and 1s. The role of chance involves connectionsfrom chance to credence, possibility, time, intrinsicness, lawhood,and causation. These connections do not allow for deterministicchance.

1 Overview

2 Four Arguments for Deterministic Chance

3 Four Conceptions of Deterministic Chance

4 The Role ofChance

5 The Case against Posterior Deterministic Chance

6The Case against Initial Deterministic Chance

7 EpistemicChance

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Spurious Latent Classes in the Mixture Rasch Model     

Natalia Alexeev  Jonathan Templin  Allan S. Cohen 《Journal of Educational Measurement》2011,48(3):313-332

Mixture Rasch models have been used to study a number of psychometric issues such as goodness of fit, response strategy differences, strategy shifts, and multidimensionality. Although these models offer the potential for improving understanding of the latent variables being measured, under some conditions overextraction of latent classes may occur, potentially leading to misinterpretation of results. In this study, a mixture Rasch model was applied to data from a statewide test that was initially calibrated to conform to a 3‐parameter logistic (3PL) model. Results suggested how latent classes could be explained and also suggested that these latent classes might be due to applying a mixture Rasch model to 3PL data. To support this latter conjecture, a simulation study was presented to demonstrate how data generated to fit a one‐class 2‐parameter logistic (2PL) model required more than one class when fit with a mixture Rasch model.  相似文献   

Do altmetrics assess societal impact in a comparable way to case studies? An empirical test of the convergent validity of altmetrics based on data from the UK research excellence framework (REF)     

Lutz Bornmann  Robin Haunschild  Jonathan Adams 《Journal of Informetrics》2019,13(1):325-340

Altmetrics have been proposed as a way to assess the societal impact of research. Although altmetrics are already in use as impact or attention metrics in different contexts, it is still not clear whether they really capture or reflect societal impact. This study is based on altmetrics, citation counts, research output and case study data from the UK Research Excellence Framework (REF), and peers’ REF assessments of research output and societal impact. We investigated the convergent validity of altmetrics by using two REF datasets: publications submitted as research output (PRO) to the REF and publications referenced in case studies (PCS). Case studies, which are intended to demonstrate societal impact, should cite the most relevant research papers. We used the MHq’ indicator for assessing impact – an indicator which has been introduced for count data with many zeros. The results of the first part of the analysis show that news media as well as mentions on Facebook, in blogs, in Wikipedia, and in policy-related documents have higher MHq’ values for PCS than for PRO. Thus, the altmetric indicators seem to have convergent validity for these data. In the second part of the analysis, altmetrics have been correlated with REF reviewers’ average scores on PCS. The negative or close to zero correlations question the convergent validity of altmetrics in that context. We suggest that they may capture a different aspect of societal impact (which can be called unknown attention) to that seen by reviewers (who are interested in the causal link between research and action in society).  相似文献   

Subject-specific computer simulation model for determining elbow loading in one-handed tennis backhand groundstrokes     

King MA  Glynn JA  Mitchell SR 《Sports biomechanics / International Society of Biomechanics in Sports》2011,10(4):391-406

A subject-specific angle-driven computer model of a tennis player, combined with a forward dynamics, equipment-specific computer model of tennis ball-racket impacts, was developed to determine the effect of ball-racket impacts on loading at the elbow for one-handed backhand groundstrokes. Matching subject-specific computer simulations of a typical topspin/slice one-handed backhand groundstroke performed by an elite tennis player were done with root mean square differences between performance and matching simulations of < 0.5 degrees over a 50 ms period starting from ball impact. Simulation results suggest that for similar ball-racket impact conditions, the difference in elbow loading for a topspin and slice one-handed backhand groundstroke is relatively small. In this study, the relatively small differences in elbow loading may be due to comparable angle-time histories at the wrist and elbow joints with the major kinematic differences occurring at the shoulder. Using a subject-specific angle-driven computer model combined with a forward dynamics, equipment-specific computer model of tennis ball-racket impacts allows peak internal loading, net impulse, and shock due to ball-racket impact to be calculated which would not otherwise be possible without impractical invasive techniques. This study provides a basis for further investigation of the factors that may increase elbow loading during tennis strokes.  相似文献   

Accessibility of U.S. federal government home pages: Section 508 compliance and site accessibility statements     

Abiodun Olalere  Jonathan LazarAuthor vitae 《Government Information Quarterly》2011,28(3):303-309

U.S. federal websites are required to be accessible for people with impairments. However, despite the existing regulations and guidelines, many federal websites continue to be inaccessible, and accessibility policy statements available on federal websites often do not provide any useful information. This paper provides three contributions to the research literature: (1) an accessibility evaluation of 100 federal home pages using both human and automated methods, (2) a content analysis of existing website accessibility policy statements, and (3) a discussion of the relationship between actual Section 508 compliance and the existing accessibility policy statements on a website. The paper concludes with recommendations for improving policy related to Section 508 compliance for websites.  相似文献   

Shrink-film microfluidic education modules: Complete devices within minutes     

Nguyen D  McLane J  Lew V  Pegan J  Khine M 《Biomicrofluidics》2011,5(2):22209

As advances in microfluidics continue to make contributions to diagnostics and life sciences, broader awareness of this expanding field becomes necessary. By leveraging low-cost microfabrication techniques that require no capital equipment or infrastructure, simple, accessible, and effective educational modules can be made available for a broad range of educational needs from middle school demonstrations to college laboratory classes. These modules demonstrate key microfluidic concepts such as diffusion and separation as well as "laboratory on-chip" applications including chemical reactions and biological assays. These modules are intended to provide an interdisciplinary hands-on experience, including chip design, fabrication of functional devices, and experiments at the microscale. Consequently, students will be able to conceptualize physics at small scales, gain experience in computer-aided design and microfabrication, and perform experiments-all in the context of addressing real-world challenges by making their own lab-on-chip devices.  相似文献   

Bandpass sorting of heterogeneous cells using a single surface acoustic wave transducer pair     

Gergely Simon  Caroline Busch  Marco A. B. Andrade  Julien Reboud  Jonathan M. Cooper  Marc P. Y. Desmulliez  Mathis O. Riehle  Anne L. Bernassau 《Biomicrofluidics》2021,15(1)

Separation and sorting of biological entities (viruses, bacteria, and cells) is a critical step in any microfluidic lab-on-a-chip device. Acoustofluidics platforms have demonstrated their ability to use physical characteristics of cells to perform label-free separation. Bandpass-type sorting methods of medium-sized entities from a mixture have been presented using acoustic techniques; however, they require multiple transducers, lack support for various target populations, can be sensitive to flow variations, or have not been verified for continuous flow sorting of biological cells. To our knowledge, this paper presents the first acoustic bandpass method that overcomes all these limitations and presents an inherently reconfigurable technique with a single transducer pair for stable continuous flow sorting of blood cells. The sorting method is first demonstrated for polystyrene particles of sizes 6, 10, and 14.5 μm in diameter with measured purity and efficiency coefficients above 75 ± 6% and 85 ± 9%, respectively. The sorting strategy was further validated in the separation of red blood cells from white blood cells and 1 μm polystyrene particles with 78 ± 8% efficiency and 74 ± 6% purity, respectively, at a flow rate of at least 1 μl/min, enabling to process finger prick blood samples within minutes.  相似文献