Field of View Issues on the Flight Deck

2016 ◽  
Vol 60 (1) ◽  
pp. 56-60 ◽  
Author(s):  
Christopher Wickens ◽  
Angelia Sebok ◽  
Patricia McCormick ◽  
Brett Walters
Keyword(s):  
Visual Detection ◽  
General Trend ◽  
Empirical Studies ◽  
Field Of View ◽  
Primary Field ◽  
Moderator Variables ◽  
Point Of Interest ◽  
Profound Influence ◽  
Meta Analyses ◽  
Flight Deck

Twenty-eight empirical studies provided data for four meta-analyses on visual detection and discrimination inflight-decktypical tasks, at varying degrees of eccentricity relative to a central point of interest. The data revealed a general trend for poorer performance at increasing eccentricity, and greater degradation when eye movements were prevented. The data failed to reveal a systematic discontinuity of performance degradation beyond 15°, which defines the typical “primary field of view” in the cockpit, but they reveal a 14% miss rate and 21% discrimination error rate at that location. The results also point to the profound influence of moderator variables of expectancy and salience on eccentric visual performance.

Research on the role of recasts in L2 learning

2020 ◽  
Vol 53 (3) ◽  
pp. 289-315
Author(s):  
Jaemyung Goo
Keyword(s):  
Empirical Studies ◽  
Corrective Feedback ◽  
Linguistic Features ◽  
Moderator Variables ◽  
L2 Learning ◽  
L2 Development ◽  
Scholarly Discussion ◽  
Negotiation For Meaning ◽  
Meta Analyses

With much empirical evidence of a beneficial role of interaction in second language (L2) development, researchers have become interested in investigating specific aspects of interaction (e.g., negotiation for meaning, corrective feedback (CF), modified output, noticing, etc.) that likely influence the extent to which interaction benefits L2 learning (Mackey, 2012; Mackey, Abbuhl, & Gass, 2012; Mackey & Goo, 2013; Gass & Mackey, 2015; Loewen & Sato, 2018). Among varied features of interaction, CF has been found to be quite effective at drawing learners' attention to L2 linguistic features during interaction, and has engendered much scholarly discussion of pivotal importance and numerous empirical studies on its potential for L2 development (see Russell & Spada, 2006; Mackey & Goo, 2007; S. Li, 2010*; Lyster & Saito, 2010*; Lyster, Saito, & Sato, 2013*; Brown, 2016*; Nassaji, 2016* for reviews and meta-analyses). Recasts, inter alia, have been at the center of most CF research and greatly explored with a view to understanding the nature of recasts, their characteristics (in various L2 learning contexts), their relative efficacy over other CF moves, and moderator variables that may mediate the effectiveness of recasts.

Choice, voice and collaboration: using preference accommodation and feedback in trauma therapy

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Daryl Mahon
Keyword(s):  
Empirical Studies ◽  
Relative Effectiveness ◽  
Case Vignette ◽  
Trauma Therapy ◽  
Content Type ◽  
Choice Preference ◽  
Randomised Control Trials ◽  
Trauma Informed ◽  
Informed Treatment ◽  
Meta Analyses

Purpose Organisations are increasingly understanding the need to be trauma informed. However, how trauma therapies in such organisations apply the principles of choice and collaboration is less understood. The present paper applies two trans-theoretical methods for involving clients in their therapy through preference accommodation and feedback-informed treatment (FIT). A case vignette is provided demonstrating how to involve clients in trauma therapy by listening to their preferences, needs and by providing them with a voice on their experience of the process and outcome of care. Design/methodology/approach A focused review of the literature was conducted, with relevant randomised control trials, systematic reviews and meta-analyses sourced. The resulting information informed the design and this model for working with those in trauma therapy. Findings The research regarding trauma-specific therapies being more effective is far from conclusive. At the same time, early attrition and negative outcomes make up a large percentage of those seeking therapy. Using preference accommodation and FIT is one possibly way to mitigate against these experiences in therapy and to provide choice, preference and collaboration consisting with the principles of trauma-informed approaches. Research limitations/implications Methods to improve the experiences of those seeking trauma therapy have been identified and discussed. According to the author’s knowledge, this is the first known paper aligning trauma therapy and trauma-informed approaches with preference accommodation and FIT. Future empirical studies may wish to examine the relative effectiveness of this approach. Practical implications Methods to improve outcomes for those seeking trauma therapy are at the disposal of practitioners. Improving outcomes, while also providing choice, voice and collaboration is a clinical setting. Originality/value This is a novel paper adding to value and extending how practitioners can use principles of trauma-informed approaches within trauma therapy.

scholarly journals Physicians’ perceptions of palliative sedation for existential suffering: a systematic review

2019 ◽  
Vol 10 (2) ◽  
pp. 136-144 ◽  
Author(s):  
Paulo Rodrigues ◽  
Johan Menten ◽  
Chris Gastmans
Keyword(s):  
Systematic Review ◽  
Empirical Studies ◽  
Sufficient Conditions ◽  
Clinical Intervention ◽  
Palliative Sedation ◽  
Related Factors ◽  
Existential Suffering ◽  
Synthesis Methodology ◽  
Meta Analyses ◽  
Necessary And Sufficient

BackgroundPalliative sedation for existential suffering (PS-ES) is a controversial clinical intervention. Empirical studies about physicians’ perceptions do not converge in a clear position and current clinical practice guidelines do not agree either regarding this kind of intervention.AimTo gain deeper insight into physicians’ perceptions of PS-ES, the factors influencing it, the conditions for implementing it and the alternatives to it.DesignSystematic review of qualitative, quantitative and mixed-methods studies following the Peer Review Electronic Search Strategies and Preferred Reporting Items for Systematic Reviews and Meta-analyses protocols; quality appraisal and thematic synthesis methodology.Data sourcesSeven electronic databases (PubMed, CINAHL, Embase, Scopus, Web of Science, PsycINFO, PsycARTICLES) were exhaustively searched from inception through March 2019. Two reviewers screened paper titles, abstracts and full texts. We included only peer-reviewed journal articles published in English, French, German, Dutch, Spanish, Italian or Portuguese that focused on physicians’ perceptions of PS-ES.ResultsThe search yielded 17 publications published between 2002 and 2017. Physicians do not hold clear views or agree if and when PS-ES is appropriate. Case-related and individual-related factors that influenced physicians’ perceptions were identified. There is still no consensus regarding criteria to distinguish between necessary and sufficient conditions for invoking PS-ES. Some alternatives to PS-ES were identified.ConclusionsTo date, there is still no consensus on physicians’ perceptions of PS-ES. Further research is necessary to understand factors that influence physicians’ perceptions and philosophical-ethical presuppositions underlying this perceptions.

Socioeconomic Status and Academic Outcomes in Developing Countries: A Meta-Analysis

2019 ◽  
Vol 89 (6) ◽  
pp. 875-916 ◽  
Author(s):  
Sung won Kim ◽  
Hyunsun Cho ◽  
Lois Y. Kim
Keyword(s):  
Socioeconomic Status ◽  
Developing Countries ◽  
Academic Outcomes ◽  
Meta Analysis ◽  
Empirical Studies ◽  
Developed Countries ◽  
Industrialized Countries ◽  
And Gender ◽  
Meta Analyses ◽  
K 12

Despite the multiple meta-analyses documenting the association between socioeconomic status (SES) and achievement, none have examined this question outside of English-speaking industrialized countries. This study is the first meta-analytic effort, to the best of our knowledge, to focus on developing countries. Based on 49 empirical studies representing 38 countries, and a sample of 2,828,216 school-age students (grades K–12) published between 1990 and 2017, we found an overall weak relation between SES and academic outcomes. Results for attainment outcomes were stronger than achievement outcomes, and the effect size was stronger in more economically developed countries. The SES-academic outcome relation was further moderated by grade level and gender. There were no differences in the strength of the relation by specific SES measures of income/consumption, education, and wealth/home resources. Our results provide evidence that educational inequalities are wider in higher income countries, creating a serious challenge for developing countries as they expand school access.

Transparency of reporting in CALL meta-analyses between 2003 and 2015

ReCALL ◽  
2017 ◽  
Vol 30 (3) ◽  
pp. 253-277 ◽  
Author(s):  
Huifen Lin ◽  
Tsuiping Chen ◽  
Hsien-Chin Liou
Keyword(s):  
Language Learning ◽  
Meta Analysis ◽  
Empirical Studies ◽  
Research Synthesis ◽  
Computer Assisted ◽  
Computer Assisted Language Learning ◽  
Conducting Research ◽  
Number Of Publications ◽  
Meta Analyses ◽  
Research Domain

AbstractSince its introduction by Glass in the 1970s, meta-analysis has become a widely accepted and the most preferred approach to conducting research synthesis. Overcoming the weaknesses commonly associated with traditional narrative review and vote counting, meta-analysis is a statistical method of systematically aggregating and analyzing empirical studies by following well-established procedures. The findings of a meta-analysis, when appropriately conducted, are able to inform important policy decisions and provide practical pedagogical suggestions. With the growing number of publications employing meta-analysis across a wide variety of disciplines, it has received criticism due to its inconsistent findings derived from multiple meta-analyses in the same research domain. These inconsistencies have arisen partly due to the alternatives available to meta-analysts in each major meta-analytic procedure. Researchers have therefore recommended transparent reporting on the decision-making for every essential judgment call so that the results across multiple meta-analyses become replicable, consistent, and interpretable. This research explored the degree to which meta-analyses in the computer-assisted language learning (CALL) discipline transparently reported their decisions in every critical step. To achieve this aim, we retrieved 15 eligible meta-analyses in CALL published between 2003 and 2015. Features of these meta-analyses were extracted based on a codebook modified from Cooper (2003) and Aytug, Rothstein, Zhou and Kern (2012). A transparency score of reporting was then calculated to examine the degree to which these meta-analyses are compliant with the norms of reporting as recommended in the literature. We then discuss the strengths and weaknesses of the methodologies and provide suggestions for conducting quality meta-analyses in this domain.

scholarly journals Global, regional and national estimates ofToxoplasma gondiiseroprevalence in pregnant women: a protocol for a systematic review and modelling analysis

BMJ Open ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. e030472 ◽  
Author(s):  
Jean Joel Bigna ◽  
Joel Noutakdie Tochie ◽  
Dahlia Noelle Tounouga ◽  
Anne Olive Bekolo ◽  
Nadia S Ymele ◽  
...  
Keyword(s):  
Public Health ◽  
Toxoplasma Gondii ◽  
Pregnant Women ◽  
Data Extraction ◽  
Meta Analysis ◽  
Empirical Studies ◽  
Published Data ◽  
Representative Study ◽  
Nationally Representative ◽  
Meta Analyses

IntroductionTo set priorities for public health policy, funding for public health interventions, and healthcare planning which will ultimately contribute in bending the burden of toxoplasmosis towards maternal and neonatal health, it is necessary to have accurate data on the prevalence of toxoplasmosis in pregnancy. Therefore, we aimed to estimate the seroprevalence ofToxoplasma gondiiinfection in pregnant women by countries, WHO regions and globally.Methods and analysisWe will search multiple databases to identify studies that reported the prevalence (or enough data to compute this estimate) ofToxoplasma gondiiin the global population of pregnant women up till December 31, 2018 without any language restrictions. Study selection, data extraction and risk of bias assessment will be conducted independently by three pairs of investigators. For each country, we will estimate the prevalence based on empirical studies if there is either one nationally representative study, or two or more not nationally representative studies. Then, we will perform a country-specific random-effects meta-analyses. The heterogeneity will be evaluated using the χ² test on Cochrane’s Q statistic and quantified with H and I² statistics. For countries with one or no empirical studies or where the meta-analysis will result in a wide CI of 0%–100%, we will predict the country’s prevalence by using a Bayesian generalised non-linear multilevel model. The model will have a hierarchical structure in which estimates for each country will be informed by its own data, if available, or by data from other countries in the same WHO region.Ethics and disseminationSince this study will be based on published data, it does not require any ethical approval. Its findings will be published in a scientific peer-reviewed journal. They will also be presented at scientific conferences and to relevant public health sectors.PROSPERO registration numberCRD42019125572.

Weight- and meta-analysis of empirical literature on entrepreneurship

2017 ◽  
Vol 18 (3) ◽  
pp. 195-209 ◽  
Author(s):  
Adel Alferaih
Keyword(s):  
Empirical Research ◽  
Meta Analysis ◽  
Empirical Studies ◽  
Entrepreneurial Intentions ◽  
Empirical Literature ◽  
Research Model ◽  
Entrepreneurship Research ◽  
Meta Analyses

While a number of studies have reviewed empirical research on individuals’ entrepreneurial intentions (EIs), very little is known about the cumulative performance of frequently used constructs and their direct and indirect relationships with EI. This research has exposed 123 usable empirical studies of EI to weight- and meta-analyses to determine the cumulative performance of various frequently explored relationships. A generic research model of the antecedents of EI is proposed on that basis. The outcomes of this research and its limitations have practical and theoretical implications for future entrepreneurship research.

Systematic review and meta-analyses of useful field of view cognitive training

2018 ◽  
Vol 84 ◽  
pp. 72-91 ◽  
Author(s):  
Jerri D. Edwards ◽  
Bernadette A. Fausto ◽  
Amber M. Tetlow ◽  
Richard T. Corona ◽  
Elise G. Valdés
Keyword(s):  
Systematic Review ◽  
Cognitive Training ◽  
Field Of View ◽  
Useful Field Of View ◽  
Meta Analyses

Who becomes an entrepreneur? A 30-years-review of individual-level research

2015 ◽  
Vol 22 (2) ◽  
pp. 225-248 ◽  
Author(s):  
Sascha G. Walter ◽  
Simon Heinrichs
Keyword(s):  
Empirical Studies ◽  
Temporal Trends ◽  
Temporal Stability ◽  
Strong Support ◽  
Entrepreneurial Intentions ◽  
Future Research ◽  
Content Type ◽  
Individual Level ◽  
Individual Variables ◽  
Meta Analyses

Purpose – The purpose of this paper is to cumulate published empirical studies (1980-2009) on the relationship between individual variables and entrepreneurial status. The authors categorize repeatedly analyzed determinants into six perspectives (trait, cognitive, affective, intentions, learning, and economic), review empirical findings for each determinant and each perspective, investigate trends in the field, and propose avenues for future research. Design/methodology/approach – The authors categorize determinants into one of the six paradigms and review findings for 46 repeatedly studied variables from 131 studies. Support for each variable, publication outlets chosen, and temporal trends in exploring entrepreneurial intentions, entrepreneurial status or differences between entrepreneurs and other individuals are analyzed. Findings – Prior studies have focused on trait and economic perspectives with strong support, followed by the learning and intentions perspectives. The affective perspective is a still under-researched, yet growing field. Most articles were published in the 1990s. The emphasis on theoretical perspectives varies over decades. Directions for future research include integrating the perspectives (e.g. across the cognitive and affective domain), testing the temporal stability of influences, and developing and testing cross-level models that incorporate contextual influences. Originality/value – The paper complements prior reviews and meta-analyses by picturing the breadth of the field and adding important points to the research agenda.

scholarly journals Meta-analysis of Technical Efficiency in Selected Agricultural Sub-sectors: Implications for Policy Making in Developing Countries like Sri Lanka

2021 ◽  
pp. 42-57
Author(s):  
S. M. P. Senevirathne ◽  
M. H. S. M. Hettiarachchi ◽  
R. P. W. A. Dilrukshi ◽  
G.D. Kapila Kumara ◽  
A. D. Ampitiyawatta ◽  
...  
Keyword(s):  
Technical Efficiency ◽  
Developing World ◽  
Meta Analysis ◽  
Empirical Studies ◽  
Policy Implications ◽  
Screening Process ◽  
Farmer Field Schools ◽  
The Government ◽  
Meta Analyses ◽  
Field Schools

Aims: To evaluate the technical efficiency (TE) in selected agricultural sub-sectors and to propose possible policy interventions to the government with the aim of reducing the poverty of farmers in the developing world. Study design: A meta-analysis based on empirical studies conducted by various scientists throughout the developing world. Methodology: Research articles for the meta-analysis were selected using a thorough screening process based on the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) concept. Selected 94 articles were sub-divided in to three main agriculture sub-sectors for detailed analysis; (a) paddy, other field crops-OFC and vegetables, (b) fruits, and (c) livestock. Mean TE of each crop or livestock type was calculated by averaging the TE values for a particular crop or livestock type across different studies included in this study. Results: TE data presented in the original articles showed a considerable dispersion within a given study. The highest mean TE was recorded in B-onion (0.83±0.15) whereas the lowest was recorded in maize (0.703±0.09) and in soybean (0.705±0.13). The TE of chili cultivation was 0.78 with the greatest variability (standard error of mean [SEM] 0.19) among the crops considered, which signifies the unpredictable nature of the chili cultivation. Mango was found to be the least technically efficient crop among the studied, with a mean TE of 0.596±0.11. Dairy, poultry and aquaculture farming operations were found to be highly technically efficient having mean TE values of 0.80±0.16, 0.89±0.02 and 0.88±0.08 respectively. Conclusion: Findings of this study will lead to several key policy implications including, improvement of the socioeconomic characteristics of farmers, implementation of farmer field schools (FFS) and establishment of a cautious and gradual strategy for expansion of the rural financial institutions.

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