Homelessness in the elementary school classroom: social and emotional consequences     

Kirby A. Chow  Vanessa L. Melchor 《International journal of qualitative studies in education》2013,26(6):641-662

This study examined elementary school teachers’ experiences working with homeless students. Specifically, we focused on the psychosocial impacts of homelessness on students and their teachers. Qualitative, semi-structured interviews were conducted with 28 teachers who worked at designated public schools for family homeless shelters. A prominent theme that emerged from teachers’ accounts was how the instability tied to homelessness affected students’ behavioral, social, and emotional adjustment in the classroom (e.g. externalizing problems, difficulty developing peer relationships, and withdrawn behavior). Teachers’ own social and emotional competencies (e.g. fostering positive teacher–student relationships, and perspective taking) influenced the manner in which they responded to their students’ needs. Findings suggest that critical components may be lacking articulation in the McKinney-Vento Act’s Education for Homeless Children and Youth Program such as guidelines for teacher responsibilities, supports for teachers, and an emphasis not only on children’s academic but also social and emotional needs.  相似文献   

Cytokine responses to resistance training in people with multiple sclerosis     

Lesley J. White  Vanessa Castellano  Sean C. Mc Coy 《Journal of sports sciences》2013,31(8):911-914

Abstract

Exercise for individuals with multiple sclerosis (MS) has been shown to improve cardiovascular function, increase strength and endurance, and reduce fatigue. The impact of exercise on immune function in the disease, however, remains mostly unexplored. Ten female MS patients participated in an 8 week programme of twice-weekly progressive resistance training, with pre- and post-training assessment of serum concentrations of cytokines IL-2, IL-4, IL-6, IL-10, CRP, TNF-α and IFN-γ. After training, IL-4, IL-10, CRP and IFN-γ showed statistically reduced resting concentrations in blood, while TNF-α showed non-significant reductions and IL-2 and IL-6 remained unchanged. These results suggest that progressive resistance training may have an impact on cytokine concentrations in individuals with MS and should be confirmed in studies with stronger statistical power. The impact of these changes on overall immune function in MS and on disease status and prognosis remains to be determined.  相似文献   

CLAIRE: A combinatorial visual analytics system for information retrieval evaluation     

Marco Angelini  Vanessa Fazzini  Nicola Ferro  Giuseppe Santucci  Gianmaria Silvello 《Information processing & management》2018,54(6):1077-1100

Information Retrieval (IR) develops complex systems, constituted of several components, which aim at returning and optimally ranking the most relevant documents in response to user queries. In this context, experimental evaluation plays a central role, since it allows for measuring IR systems effectiveness, increasing the understanding of their functioning, and better directing the efforts for improving them. Current evaluation methodologies are limited by two major factors: (i) IR systems are evaluated as “black boxes”, since it is not possible to decompose the contributions of the different components, e.g., stop lists, stemmers, and IR models; (ii) given that it is not possible to predict the effectiveness of an IR system, both academia and industry need to explore huge numbers of systems, originated by large combinatorial compositions of their components, to understand how they perform and how these components interact together.We propose a Combinatorial visuaL Analytics system for Information Retrieval Evaluation (CLAIRE) which allows for exploring and making sense of the performances of a large amount of IR systems, in order to quickly and intuitively grasp which system configurations are preferred, what are the contributions of the different components and how these components interact together.The CLAIRE system is then validated against use cases based on several test collections using a wide set of systems, generated by a combinatorial composition of several off-the-shelf components, representing the most common denominator almost always present in English IR systems. In particular, we validate the findings enabled by CLAIRE with respect to consolidated deep statistical analyses and we show that the CLAIRE system allows the generation of new insights, which were not detectable with traditional approaches.  相似文献   

The Development of a Discussion Rubric for Online Courses: Standardizing Expectations of Graduate Students in Online Scholarly Discussions     

Vanessa L. Wyss  Debra Freedman  Cathy J. Siebert 《TechTrends》2014,58(2):99-107

This paper reports on the design and evaluation of a rubric for assessing discussions in online graduate level education courses. The aims of the research were twofold. The first goal was to develop a discussion rubric that provides guidance to graduate students participating in online courses that are heavily discussion based. The second goal was to evaluate the efficacy of the rubric in student comfort with the expectations for the course and the quality of the discussions. Qualitative and quantitative course evaluations from four sections of an online graduate course are utilized to report on the effectiveness of the rubric upon implementation. Student average grades also show a statistically significant increase with the implementation of the rubric.  相似文献   

The Hit & Turn Tennis Test: an acoustically controlled endurance test for tennis players     

Ferrauti A  Kinner V  Fernandez-Fernandez J 《Journal of sports sciences》2011,29(5):485-494

This study was conducted to validate and evaluate the "Hit & Turn Tennis Test", an acoustically progressive on-court endurance test for tennis players. Ninety-eight competitive tennis players (53 males, 45 females) of different age groups participated in the study. For validation, the adult male players completed three Hit & Turn tests, one on a clay court and two on a carpet surface, a tennis-specific ball machine test and an incremental treadmill run in a randomized order. A stronger correlation between maximal performance (r = 0.81, P < 0.01) and maximal oxygen uptake (r = 0.96, P < 0.01) was observed between the Hit & Turn test and the ball machine test, than between the Hit & Turn test and the treadmill test. For test-retest, we found a significant correlation between maximal performance on the same (r = 0.83, P < 0.01) and on different surfaces (r = 0.74, P < 0.01). During test evaluation, maximal performance was higher in males than in females (P < 0.01) and increased by consecutive age group in boys (P < 0.01) but not in girls (P = 0.97). In conclusion, Hit & Turn maximum test performance can be recommended as a valid and reliable indicator for tennis-specific endurance.  相似文献   

The effects and characteristics of family involvement on a peer tutoring programme to improve the reading comprehension competence     

Sílvia Blanch  David Duran  Vanessa Valdebenito  Marta Flores 《European Journal of Psychology of Education - EJPE》2013,28(1):101-119

The aim of the present study was to investigate the impact of an educational programme involving peer tutoring at school and family tutoring at home on child reading comprehension achievement in Catalunya, Spain. We drew upon a sample of 303 primary school students from 8 to 11 years old and 223 family tutors from home (61.5% mothers, 15% fathers, 17% both parents, 6.5% siblings). Reading comprehension performance was assessed through standardised tests in pre and post-test bases. Background variables were collected by means of student and parent questionnaires and also teacher and family interviews. An analysis of the family tutoring interactions was also performed. The main results showed positive effects for all the students, but especially for the 223 students who received family support. Overall, the study reveals the effectiveness of peer learning to improve reading comprehension skills and the potential of family involvement for the development of academic skills when the school provides trust and support for it.  相似文献   

SUCCESS,DIFFICULTY, AND INSTRUCTIONAL STRATEGY TO ENACT AN ARGUMENT-BASED INQUIRY APPROACH: EXPERIENCES OF ELEMENTARY TEACHERS     

Aeran Choi  Vanessa Klein  Susan Hershberger 《International Journal of Science and Mathematics Education》2015,13(5):991-1011

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Building capacity through action research curricula reviews     

Vanessa Lee  Priscilla Robinson 《高等教育研究与发展》2015,34(2):324-337

In Australia, graduates of Master of Public Health (MPH) programmes are expected to achieve a set of core competencies, including a subset that is specifically related to Indigenous health. This paper reports on the methods utilised in a project which was designed using action research to strengthen Indigenous public health curricula within MPH programmes at Australian universities. This aim is achieved through the use of three interlinked ‘action–reflection’ cycles, involving individual Indigenous public health academics who, through their membership in a scholarly network, have undertaken a series of curriculum reviews, which have in turn influenced organisational change in universities. The project results demonstrated how action research can successfully strengthen Indigenous public health curricula.  相似文献   

Recreating blood-brain barrier physiology and structure on chip: A novel neurovascular microfluidic bioreactor     

Jacquelyn A. Brown  Virginia Pensabene  Dmitry A. Markov  Vanessa Allwardt  M. Diana Neely  Mingjian Shi  Clayton M. Britt  Orlando S. Hoilett  Qing Yang  Bryson M. Brewer  Philip C. Samson  Lisa J. McCawley  James M. May  Donna J. Webb  Deyu Li  Aaron B. Bowman  Ronald S. Reiserer  John P. Wikswo 《Biomicrofluidics》2015,9(5)

The blood-brain barrier (BBB) is a critical structure that serves as the gatekeeper between the central nervous system and the rest of the body. It is the responsibility of the BBB to facilitate the entry of required nutrients into the brain and to exclude potentially harmful compounds; however, this complex structure has remained difficult to model faithfully in vitro. Accurate in vitro models are necessary for understanding how the BBB forms and functions, as well as for evaluating drug and toxin penetration across the barrier. Many previous models have failed to support all the cell types involved in the BBB formation and/or lacked the flow-created shear forces needed for mature tight junction formation. To address these issues and to help establish a more faithful in vitro model of the BBB, we have designed and fabricated a microfluidic device that is comprised of both a vascular chamber and a brain chamber separated by a porous membrane. This design allows for cell-to-cell communication between endothelial cells, astrocytes, and pericytes and independent perfusion of both compartments separated by the membrane. This NeuroVascular Unit (NVU) represents approximately one-millionth of the human brain, and hence, has sufficient cell mass to support a breadth of analytical measurements. The NVU has been validated with both fluorescein isothiocyanate (FITC)-dextran diffusion and transendothelial electrical resistance. The NVU has enabled in vitro modeling of the BBB using all human cell types and sampling effluent from both sides of the barrier.  相似文献   

Two‐Way Interactions — They're Top of the Pops     

Vanessa Simonite 《Teaching Statistics》2000,22(2):58-60

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