scholarly journals The Effect of Physical Activity on Executive Function: A Brief Commentary on Definitions, Measurement Issues, and the Current State of the Literature

2009 ◽  
Vol 31 (4) ◽  
pp. 469-483 ◽  
Author(s):  
Jennifer L. Etnier ◽  
Yu-Kai Chang
Keyword(s):  
Physical Activity ◽  
Executive Function ◽  
Effect Sizes ◽  
Clear Definition ◽  
Measurement Issues ◽  
Extant Literature ◽  
Current State ◽  
Research Questions ◽  
Definition Of ◽  
Selection Of

The purpose of the present commentary is to introduce relevant issues with respect to the measurement of executive function in physical activity studies. Suggested definitions of executive function are introduced, and executive function tasks that are commonly used in the neuropsychological literature are presented and briefly described. The extant literature on physical activity and cognition is discussed, and issues relative to the limitations of this body of literature are raised. In summary, research on the effect of physical activity on executive function is still in its infancy. We encourage researchers in this field to provide a clear definition of executive function, to carefully consider the relevance of published effect sizes to their own research questions, and to consider either providing a logical rationale for their selection of particular executive function measures or to use multiple measures of executive function when exploring relationships between physical activity and executive function.

scholarly journals Promotion of Resilience in Migrants: A Systematic Review of Study and Psychosocial Intervention

2021 ◽  
Author(s):  
Maria Ciaramella ◽  
Nadia Monacelli ◽  
Livia Concetta Eugenia Cocimano
Keyword(s):  
Systematic Review ◽  
Psychosocial Intervention ◽  
Life Experiences ◽  
Psychosocial Interventions ◽  
Migrant Population ◽  
Methodological Choices ◽  
Research Questions ◽  
Definition Of ◽  
Selection Of

AbstractThis systematic review aimed to contribute to a better and more focused understanding of the link between the concept of resilience and psychosocial interventions in the migrant population. The research questions concerned the type of population involved, definition of resilience, methodological choices and which intervention programmes were targeted at migrants. In the 90 articles included, an heterogeneity in defining resilience or not well specified definition resulted. Different migratory experiences were not adequately considered in the selection of participants. Few resilience interventions on migrants were resulted. A lack of procedure’s descriptions that keep in account specific migrants’ life-experiences and efficacy’s measures were highlighted.

scholarly journals The Evaluation of Agricultural Land Use Sustainability in the Post-Socialist Camp Countries: Methodological and Practical Aspects

2021 ◽  
Vol 13 (2) ◽  
pp. 59-78
Author(s):  
Olena Kotykova ◽  
Mykola Babych
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Sustainable Use ◽  
Correct Selection ◽  
Agricultural Land Use ◽  
Current State ◽  
Definition Of ◽  
The Given ◽  
Selection Of ◽  
Integral Indicator

An effective implementation of the sustainable use of agricultural land program is impossible without reliable results of the current state of the problem. In this sense, the correct selection of indicators and methods for determining the level of stability is important. The authors proposes the definition of the agricultural land use sustainability integral indicator based on three methodological approaches: the construction of the indicators system, each of them reflects some aspects of the land use sustainability at the macro level (according to the specific issues); the construction of the integral indicator for comparing the countries’ land use sustainability. According to the given methods it has been proved that agricultural land use in the countries of the post-socialist camp has a positive dynamics, but the sustainability indicators for all indicators have not achieved yet. This study was supported in part by the Erasmus SUPPA program – Jean Monnet Associations Application No 611556-EPP-1-2019-1-UA-EPPJMO-SUPPA.

Issues in the Conceptualization and Assessment of Hot Executive Functions in Childhood

2014 ◽  
Vol 20 (2) ◽  
pp. 152-156 ◽  
Author(s):  
Marilyn Welsh ◽  
Eric Peterson
Keyword(s):  
Executive Function ◽  
Individual Differences ◽  
Construct Validity ◽  
Executive Functions ◽  
Effortful Control ◽  
Self Regulation ◽  
Self Control ◽  
Current State ◽  
Research Questions ◽  
The Individual

AbstractOur review examines the current state of the research on hot executive function (EF), as contrasted with cool EF, with regard to the evidence for construct validity. Current theoretical discussions have examined the conceptual overlap among constructs such as hot EF, effortful control, self-control, and self-regulation. We explore this emerging literature with a focus on research questions, tasks, and methods. Finally, we consider the unresolved questions facing the study of hot EF, most notably the difficulty in determining the relative “heat” of a given task based on task content, testing context, and the individual differences among the participants. (JINS, 2014, 20, 1–5)

scholarly journals A climatological morphology of ionospheric disturbances at high and polar latitudes

2016 ◽  
Vol 58 (6) ◽  
Author(s):  
Dimitris N. Fotiadis ◽  
Sotiria D. Matta ◽  
Stamatis S. Kouris
Keyword(s):  
Present Model ◽  
Time Window ◽  
Solar Cycles ◽  
Time Intervals ◽  
F Region ◽  
Current State ◽  
Characteristic Features ◽  
Definition Of ◽  
Region Plasma ◽  
Selection Of

<p>After a historical introduction on the first well-documented observations of ionospheric phenomena and a review of the current, state-of-the art polar ionospheric studies, a climatological morphology of the irregular F-region plasma structures at high and polar latitudes is being presented, following a feature-aided pattern recognition method. Using the available in three solar cycles hourly <em>f</em><sub>o</sub>F2 data from 18 ionosonde stations, an ionospheric definition of disturbed conditions, independent of any causative mechanism, is being applied and positive/negative disturbances of duration smaller than 24 hours are sorted out. No latitudinal/longitudinal bins or seasons are defined and disturbances in each month and station are handled separately while four local time intervals of storm commencement are considered, according to solar zenith angle. A median profile per disturbance is produced only when a minimum occurrence probability is satisfied. Non-systematic features are excluded from this analysis by careful selection of the time window under morphological investigation. First, the median profiles of disturbance patterns are fitted to standard distributions and then, if they fail, they are grouped according to their major characteristic features and are described by a dynamic variation envelope along with their distribution in space and time. The present model, while being a non-conditional stand-alone model of ionospheric storms at high and polar latitudes offered to radio users, may complement existing empirical models. Finally, the present model may ultimately reveal cause-effect relationships with geomagnetic field or interplanetary parameters after further correlation studies undertaken in the future.</p>

The dignity of the nursing profession

2014 ◽  
Vol 21 (6) ◽  
pp. 659-672 ◽  
Author(s):  
Laura Sabatino ◽  
Alessandro Stievano ◽  
Gennaro Rocco ◽  
Hanna Kallio ◽  
Anna-Maija Pietila ◽  
...  
Keyword(s):  
Research Design ◽  
Positive Impact ◽  
Scientific Discipline ◽  
Clear Definition ◽  
Human Beings ◽  
Tentative Model ◽  
Definition Of ◽  
Nursing Professional ◽  
Selection Of

Background: Nursing continues to gain legitimation epistemologically and ontologically as a scientific discipline throughout the world. If a profession gains respect as a true autonomous scientific profession, then this recognition has to be put in practice in all environments and geographical areas. Nursing professional dignity, as a self-regarding concept, does not have a clear definition in the literature, and it has only begun to be analyzed in the last 10 years. Objectives: The purpose of this meta-synthesis was to determine the various factors that constitute the notion of nursing professional dignity. The target was to create a tentative model of the concept. Research design: The research design was a meta-synthesis (N = 15 original articles) of nursing professional dignity described in the literature, based on the guidelines by Noblit and Hare. Method and findings: Original studies were sought out from electronic databases and manual searches. The selection of literature was conducted on stages based on titles (n = 2595), abstracts (n = 70), and full-texts (n = 15) according to the inclusion and exclusion criteria. From this analysis, a clear definition of nursing professional dignity emerged that underscored two main macro-dimensions constituting this intertwined, multidimensional, and complex notion: characteristics of the human beings and workplace elements. Conclusion: The recognition of nursing professional dignity could have a positive impact on patients because the results clearly showed that nurses are more prone to foster patients’ dignity, patients’ safety, and a better quality of care if their own dignity is respected. If nurses are uncomfortable, humiliated, or not seen in their professional role, it is difficult to give to others good care, good support, or good relationships.

scholarly journals Archaeology in Czechoslovakia: trends and approaches

Antiquity ◽  
1991 ◽  
Vol 65 (247) ◽  
pp. 306-307 ◽  
Author(s):  
Natalie Venclová
Keyword(s):  
Eastern Europe ◽  
Special Section ◽  
The West ◽  
Archaeological Material ◽  
Current State ◽  
Geographical Position ◽  
English Speaking ◽  
State Of Research ◽  
Definition Of ◽  
Selection Of

Whatever the journalist’s definition of eastern Europe might be (cf. S. Milisauskas in ANTIQUITY 64: 283], let us state, as introduction to this Special Section, that Czechoslovakia (FIGURE 1) is a country in Central, not Eastern, Europe. It is somewhat controversial to speak about its ‘return to Europe’, as some politicians would have it, as it has been there all the time. After the period of limited contacts of Czechoslovak archaeologists with their colleagues ‘in the West’ it is felt that now, in the changed (post-November-1989) situation, information on the current state of research, and especially on the approaches applied recently to the study of Czech and Slovak archaeological material (and perhaps on Czechoslovakia's geographical position as well?) may be of use for an interested English-speaking reader. The following – rather random – selection of articles is the result.

scholarly journals Uma Revisão Sistemática da Literatura para Identificação de Lacunas de Pesquisa Relacionadas a Mineração de Processos Educacionais

RENOTE ◽  
2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Lucielton Manoel da Silva ◽  
Rodrigo Lins Rodrigues ◽  
João Carlos Sedraz Silva ◽  
Gibran Medeiros Chaves de Vasconcelos Medeiros Chaves de Vasconcelos ◽  
Jorge Luis Cavalcanti Ramos
Keyword(s):  
Systematic Review ◽  
Process Mining ◽  
Learning Management Systems ◽  
Educational Process ◽  
Management Systems ◽  
Review Of Literature ◽  
Current State ◽  
Research Questions ◽  
Definition Of ◽  
State Of Art

This paper has as objective present the state of art of Educational Process Mining(EPM) and the application of yours results in Learning Management Systems (LMS), to do this was made a systematic review of literature(SRL), where through a well defined and objective process was selected articles to serve as base to the SRL. After the definition of the protocol and the realization of the methodological process we got nine articles that contributed satisfactorily to the responses of research questions related with the studied phenomenon, where was analisade many aspects of them to get informations about the current state of arte of EPM.

scholarly journals Impact of Best-Fitted Control Selection on Effect Size: An Example in Functional GI Disorder Case–Control Studies

2021 ◽  
Vol 18 (19) ◽  
pp. 10296
Author(s):  
Peyman Adibi ◽  
Shahram Agah ◽  
Hassan Doosti ◽  
Awat Feizi
Keyword(s):  
Sample Size ◽  
Effect Size ◽  
Case Control ◽  
Effect Sizes ◽  
Anxiety And Depression ◽  
Control Group ◽  
Case Control Studies ◽  
Control Groups ◽  
Definition Of ◽  
Selection Of

Background: Effect sizes are the most useful quantities for communicating the practical significance of results and helping to facilitate cumulative science. We hypothesize that the selection of the best-fitted controls can significantly affect the estimated effect sizes in case–control studies. Therefore, we decided to exemplify and clarify this effect on effect size using a large data set. The objective of this study was to investigate the association among variables in functional gastrointestinal disorders (FGIDs) and mental health problems, common ailments that reduce the quality of life of a large proportion of the community worldwide. Method: In this methodological study, we constitute case and control groups in our study framework using the Epidemiology of Psychological, Alimentary Health and Nutrition (SEPAHAN) dataset of 4763 participants. We devised four definitions for control in this extensive database of FGID patients and analyzed the effect of these definitions on the odds ratio (OR): 1. conventional control: without target disorder/syndrome (sample size 4040); 2. without any positive criteria: criterion-free control (sample size 1053); 3. syndrome-free control: without any disorder/syndrome (sample size 847); 4. symptom-free control: without any symptoms (sample size 204). We considered a fixed case group that included 723 patients with a Rome III-based definition of functional dyspepsia. Psychological distress, anxiety, and depression were considered as dependent variables in the analysis. Logistic regression was used for association analysis, and the odds ratio and 95% confidence interval (95%CI) for OR were reported as the effect size. Results: The estimated ORs indicate that the strength of the association in the first case–control group is the lowest, and the fourth case–control group, including controls with completely asymptomatic people, is the highest. Ascending effect sizes were obtained in the conventional, criterion-free, syndrome-free, and symptom-free control groups. These results are consistent for all three psychological disorders, psychological distress, anxiety, and depression. Conclusions: This study shows that a precise definition of the control is mandatory in every case–control study and affects the estimated effect size. In clinical settings, the selection of symptomatic controls using the conventional definition could significantly diminish the effect size.

scholarly journals Qualified athletes’ features of nutrition in cyclic kinds of sports

2021 ◽  
pp. 124-128
Author(s):  
Oleksander Toporkov ◽  
Serhii Kotliar
Keyword(s):  
Physical Activity ◽  
Fruit Juice ◽  
Daily Intake ◽  
The Body ◽  
Clear Definition ◽  
Intensive Training ◽  
Know How ◽  
Balanced Diet ◽  
Definition Of ◽  
Intense Physical Activity

The article considers the structure of nutrition of qualified athletes who compete in cyclic sports. Nutrition in the traini ng of athletes is important during intense physical activity or in difficult competition conditions, so there is a need to use specialized foods for athletes. The use of different foods in terms of carbohydrates, proteins and fats, provides a clear definition of strategies and tactics for their use, simplifying the planning of the diet of athletes, adherence to a diet and a uniform supply of nutrients to the body. It’s recommended to athletes and coaches to participate more actively in the development of the menu and pay attention to the increase in carbohydrates in the diet and the reduction of fats both at home and at training camps. Athletes' needs for macronutrients, vitamins and minerals should not be neglected. The requirements of the body of athletes for cyclic sports in macronutrients, vitamins and minerals are given. No matter whether you are an amateur or a professional, you should definitely make a balanced diet - and this is partly art, and partly science. First of all, you need to correctly select the nutrition, but it is very important to know how much and when to eat. It is also important to fully satisfy the body's needs for hydration. During an intensive training, you need to drink at least of 2.7-3.8 liters of substance per day, an average of 240 ml every hour. Water should be nearly half of the daily intake, but other fluids are also beneficial. Fruit – fresh, dried and fruit juice – are the important source of concentrated carbohydrates, which give the athlete strength for training and materials for recovery. All fruit are nutritious, but some are especially good. The best way to get a variety of phytonutrients is to eat different fruits.

Selection and Preparation of Specific Tissue Regions For Tem Using Large Epoxy-Embedded Blocks

1973 ◽  
Vol 31 ◽  
pp. 324-325 ◽  
Author(s):  
P. M. Lowrie ◽  
W. S. Tyler
Keyword(s):  
Electron Microscopy ◽  
Anatomical Structures ◽  
Ultrastructural Studies ◽  
Transmission Electron ◽  
Microscopic Evaluation ◽  
Embedded Blocks ◽  
Specific Tissue ◽  
Definition Of ◽  
Areas Of Interest ◽  
Selection Of

The importance of examining stained 1 to 2μ plastic sections by light microscopy has long been recognized, both for increased definition of many histologic features and for selection of specimen samples to be used in ultrastructural studies. Selection of specimens with specific orien ation relative to anatomical structures becomes of critical importance in ultrastructural investigations of organs such as the lung. The uantity of blocks necessary to locate special areas of interest by random sampling is large, however, and the method is lacking in precision. Several methods have been described for selection of specific areas for electron microscopy using light microscopic evaluation of paraffin, epoxy-infiltrated, or epoxy-embedded large blocks from which thick sections were cut. Selected areas from these thick sections were subsequently removed and re-embedded or attached to blank precasted blocks and resectioned for transmission electron microscopy (TEM).

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