Effect of binocular disparity on learning anatomy with stereoscopic augmented reality visualization: A double center randomized controlled trial     

Katerina Bogomolova  Marc A. T. M. Vorstenbosch  Inssaf El Messaoudi  Micha Holla  Steven E. R. Hovius  Jos A. van der Hage  Beerend P. Hierck 《Anatomical sciences education》2023,16(1):87-98

Binocular disparity provides one of the important depth cues within stereoscopic three-dimensional (3D) visualization technology. However, there is limited research on its effect on learning within a 3D augmented reality (AR) environment. This study evaluated the effect of binocular disparity on the acquisition of anatomical knowledge and perceived cognitive load in relation to visual-spatial abilities. In a double-center randomized controlled trial, first-year (bio)medical undergraduates studied lower extremity anatomy in an interactive 3D AR environment either with a stereoscopic 3D view (n = 32) or monoscopic 3D view (n = 34). Visual-spatial abilities were tested with a mental rotation test. Anatomical knowledge was assessed by a validated 30-item written test and 30-item specimen test. Cognitive load was measured by the NASA-TLX questionnaire. Students in the stereoscopic 3D and monoscopic 3D groups performed equally well in terms of percentage correct answers (written test: 47.9 ± 15.8 vs. 49.1 ± 18.3; P = 0.635; specimen test: 43.0 ± 17.9 vs. 46.3 ± 15.1; P = 0.429), and perceived cognitive load scores (6.2 ± 1.0 vs. 6.2 ± 1.3; P = 0.992). Regardless of intervention, visual-spatial abilities were positively associated with the specimen test scores (η² = 0.13, P = 0.003), perceived representativeness of the anatomy test questions (P = 0.010) and subjective improvement in anatomy knowledge (P < 0.001). In conclusion, binocular disparity does not improve learning anatomy. Motion parallax should be considered as another important depth cue that contributes to depth perception during learning in a stereoscopic 3D AR environment.  相似文献   

Fish-out-of-office: How managerialised university conditions make administrative knowledge inaccessible to academics     

Anita Louise Wheeldon  Stephen Jonathan Whitty  Bronte van der Hoorn 《Higher Education Quarterly》2023,77(2):342-355

Academics report feeling unable to cope in the managerialised university. To confirm these feelings are symptoms of managerialism's tightening grip, we use Bourdieusian concepts of field and capital to compare academics and professional staff experiential statements in an Australian university. We compare their field conditions and examine how their differences enable or hinder the accumulation of capital that defines their field. Findings show that managerialism requires professional staff to share work tasks and be on-campus, which enables them to accumulate the capital they require. Managerialism also permits and resources academics to working out-of-office to accumulate their required capital. Consequentially though, university operational knowledge becomes informal and only accessible to professional staff who accumulate the required social capital to access it. Professional staff are thus fish-in-water; easily accumulating social capital through day-to-day activities. But academics become fish-out-of-water (office); they flounder to access operational knowledge, which leads to feelings of not coping.  相似文献   

Do more hours in center-based care cause more externalizing problems? A cross-national replication study     

Catalina Rey-Guerra  Henrik D. Zachrisson  Eric Dearing  Daniel Berry  Susanne Kuger  Margaret R. Burchinal  Ane Nærde  Thomas van Huizen  Sylvana M. Côté 《Child development》2023,94(2):458-477

Whether high quantities of center-based care cause behavior problems is a controversial question. Studies using covariate adjustment for selection factors have detected relations between center care and behavior problems, but studies with stronger internal validity less often find such evidence. We examined whether within-child changes in hours in center-based care predicted changes in externalizing problems in toddlers and preschoolers (N = 10,105; 49% female; data collection 1993–2012) in seven studies, including from Germany, Netherlands, Norway, two from Canada and two from the U.S. Race/ethnicity data were only collected in the United States (57% and 80% White; 42% and 13% African-American; 1.2% and 5% Latinx). Meta-analyses showed no association (r = .00, p = .88) between hours in center-based care and externalizing problems.  相似文献   

Association between prenatal maternal anxiety and/or stress and offspring's cognitive functioning: A meta-analysis     

Garance Delagneau  E. Sabrina Twilhaar  Renee Testa  Sarit van Veen  Peter Anderson 《Child development》2023,94(3):779-801

This meta-analysis examined the relationship between prenatal maternal stress and/or anxiety and the outcomes of children aged 3 months to 9 years. Of the 8754 studies published before June 2021 that were synthesized, 17 conducted in Western countries were included in the meta-analysis (N_total = 23,307; M_males 54%; M_ethnicity White 77%, Pacific 15%, African American/Black 10%, Middle Eastern 7%, Eastern 8%). Effect sizes ranged from −0.41 to 0.15. A weak negative association was found between prenatal stress and/or anxiety exposure and children's general intellectual development. Associations varied based on the type of exposure. Findings are limited to developed counties and cannot be generalized to low- and middle-income countries. Directions for maternal prenatal intervention and future studies are discussed.  相似文献   

Language and reading impairments are associated with increased prevalence of non-right-handedness     

Filippo Abbondanza  Philip S. Dale  Carol A. Wang  Marianna E. Hayiou-Thomas  Umar Toseeb  Tanner S. Koomar  Karen G. Wigg  Yu Feng  Kaitlyn M. Price  Elizabeth N. Kerr  Sharon L. Guger  Maureen W. Lovett  Lisa J. Strug  Elsje van Bergen  Conor V. Dolan  J. Bruce Tomblin  Kristina Moll  Gerd Schulte-Körne  Nina Neuhoff  Andreas Warnke  Simon E. Fisher  Cathy L. Barr  Jacob J. Michaelson  Dorret I. Boomsma  Margaret J. Snowling  Charles Hulme  Andrew J. O. Whitehouse  Craig E. Pennell  Dianne F. Newbury  John Stein  Joel B. Talcott  Dorothy V. M. Bishop  Silvia Paracchini 《Child development》2023,94(4):970-984

Handedness has been studied for association with language-related disorders because of its link with language hemispheric dominance. No clear pattern has emerged, possibly because of small samples, publication bias, and heterogeneous criteria across studies. Non-right-handedness (NRH) frequency was assessed in N = 2503 cases with reading and/or language impairment and N = 4316 sex-matched controls identified from 10 distinct cohorts (age range 6–19 years old; European ethnicity) using a priori set criteria. A meta-analysis (N_cases = 1994) showed elevated NRH % in individuals with language/reading impairment compared with controls (OR = 1.21, CI = 1.06–1.39, p = .01). The association between reading/language impairments and NRH could result from shared pathways underlying brain lateralization, handedness, and cognitive functions.  相似文献   

Understanding how student-constructed stop-motion animations promote mechanistic reasoning: A theoretical framework and empirical evidence     

Rayendra Wahyu Bachtiar  Ralph F. G. Meulenbroeks  Wouter R. van Joolingen 《科学教学研究杂志》2024,61(2):289-318

Previous studies have documented the promising results from student-constructed representations, including stop-motion animation (SMA), in supporting mechanistic reasoning (MR), which is considered an essential thinking skill in science education. Our current study presents theoretically and empirically how student-constructed SMA contributes to promoting MR. As a theoretical perspective, we propose a framework hypothesizing the link between elements of MR and the construction nature of SMA, that is, chunking and sequencing. We then examined the extent to which this framework was consistent with a multiple-case study in the domain of static electricity involving five secondary school students constructing and using their own SMA creation for reasoning. In addition, students' reasoning in pre- and postconstruction of an SMA was examined. Our empirical findings confirmed our framework by showing that all students identified the basic elements of MR, that is, entities and activities of entities, when engaging in chunking and sequencing. Chunking played a role in facilitating students to identify entities responsible for electrostatic phenomena, and sequencing seemed to elicit students to specify activities of these entities. The analysis of students' reasoning in pre- and postconstruction of SMA found that student-generated SMA has a potential effect on students' retention of the use of MR. Implications for instruction with SMA construction to support MR are discussed.  相似文献   

Automatic thematic classification of election manifestos     

Suzan Verberne  Eva D’hondt  Antal van den Bosch  Maarten Marx 《Information processing & management》2014

We digitized three years of Dutch election manifestos annotated by the Dutch political scientist Isaac Lipschits. We used these data to train a classifier that can automatically label new, unseen election manifestos with themes. Having the manifestos in a uniform XML format with all paragraphs annotated with their themes has advantages for both electronic publishing of the data and diachronic comparative data analysis. The data that we created will be disclosed to the public through a search interface. This means that it will be possible to query the data and filter them on themes and parties. We optimized the Lipschits classifier on the task of classifying election manifestos using models trained on earlier years. We built a classifier that is suited for classifying election manifestos from 2002 onwards using the data from the 1980s and 1990s. We evaluated the results by having a domain expert manually assess a sample of the classified data. We found that our automatic classifier obtains the same precision as a human classifier on unseen data. Its recall could be improved by extending the set of themes with newly emerged themes. Thus when using old political texts to classify new texts, work is needed to link and expand the set of themes to newer topics.  相似文献   

Enabling integrated knowledge acquisition and management in health care teams     

Duncan Pentland  Kirsty Forsyth  Donald Maciver  Mike Walsh  Richard Murray  Linda Irvine 《知识管理研究与实践》2014,12(4):362-374

Basing treatment, policy and planning decisions on the best available research knowledge remains a central principle in modern health care around the world, yet many health professionals find acquiring and managing published research knowledge challenging. In this paper, we report on a Soft Systems Methodology-based collaborative action research initiative with a specialist mental health service from the United Kingdom's National Health Service. Our objective was to design and implement improvements to their knowledge acquisition and management activities in order to facilitate sustained and effective evidence-based practices. We report on both the factors found to impede effective research knowledge acquisition and management and the development of more integrated knowledge management processes designed to improve the situation.  相似文献   

University Knowledge Production and Innovation: Getting a Grip     

Arjan van Rooij 《Minerva》2014,52(2):263-272

Today universities are increasingly seen as motors of innovation: they not only need to provide trained manpower and publications to society, but also new products, new processes and new services that create firms, jobs, and economic growth. This function of universities is controversial, and a huge and still expanding literature has tried to understand it. The approach of this paper is integrative; it uses the existing literature to answer a number of straightforward questions about the creation of innovations with university knowledge production: how does this happen, to what extent, and if it is desirable. In this way this article grounds the issue. Creating innovation with university knowledge production is relevant, justified and important but this has not been, is not and will not become the core function of universities. The existing literature, in other words, overestimates the importance of university knowledge production - in general, and for innovation in particular.  相似文献   

Implementing a Constructivist Approach in Higher Education with Early Childhood Educators     

Linda J. Bufkin  Suzanne Bryde 《Journal of Early Childhood Teacher Education》2013,34(2):58-65

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