Patterns of achievement-motivated behavior and performance as predictors for future success in rowing: A person-oriented study

2020 ◽  
pp. 174795412095365
Author(s):  
Michael J Schmid ◽  
Achim Conzelmann ◽  
Claudia Zuber
Keyword(s):  
National Level ◽  
Psychological Characteristics ◽  
Performance Variables ◽  
The Past ◽  
Motivated Behavior ◽  
Talent Selection ◽  
Future Success ◽  
And Performance ◽  
High Level ◽  
Selection Of

Talent selection in rowing is often solely based on anthropometric and performance variables, even though psychological characteristics are considered to be important contributors to successful talent development. Because multidimensional talent models and holistic theories represent the state-of-the-art in talent research, we aimed to find patterns connecting psychological and performance variables to future success in rowing. Therefore, 22 coaches rated the achievement-motivated behavior represented by the variables proactivity, ambition and commitment of 65 competitive to high-level athletes ( Mage = 17.2 ± 1.55 years) for the past year (t1). Additionally, the athletes performed several 2,000 m ergometer tests during that same period. At t2 (30 months later), each rower’s performance was evaluated based on the success at different competitions. To examine the results, we used the person-oriented Linking of Clusters after removal of a Residue (LICUR) method to identify the relationships between the achievement-motivated behavior and ergometer results at t1 and the success at t2. The rowers could be assigned to five clusters. Although the highly motivated rowers were not the fastest on the ergometer at t1, they were more likely to be in highest performance level at t2 compared to the other clusters (OR = 3.5, p < .05). By contrast, all the ambitionless rowers and unmotivated rowers were either racing at national level or had dropped out. In conclusion, certain patterns of achievement-motivated behavior and current performance are associated with future success (30 months later). The consideration of achievement-motivated behavior in the selection of rowers seems promising in this context.

scholarly journals A State of Art Survey for OS Performance Improvement

2018 ◽  
Vol 6 (3) ◽  
pp. 118-123 ◽  
Author(s):  
Lailan M. Haji ◽  
Subhi R.M. Zeebaree ◽  
Karwan Jacksi ◽  
Diyar Q. Zeebaree
Keyword(s):  
Performance Improvement ◽  
Critical Issue ◽  
The Past ◽  
Performance Requirements ◽  
And Performance ◽  
Measurement And Evaluation ◽  
The Stability ◽  
High Level ◽  
Multiple Metrics ◽  
Selection Of

Through the huge growth of heavy computing applications which require a high level of performance, it is observed that the interest of monitoring operating system performance has also demanded to be grown widely. In the past several years since OS performance has become a critical issue, many research studies have been produced to investigate and evaluate the stability status of OSs performance. This paper presents a survey of the most important and state of the art approaches and models to be used for performance measurement and evaluation. Furthermore, the research marks the capabilities of the performance-improvement of different operating systems using multiple metrics. The selection of metrics which will be used for monitoring the performance depends on monitoring goals and performance requirements. Many previous works related to this subject have been addressed, explained in details, and compared to highlight the top important features that will very beneficial to be depended for the best approach selection.

scholarly journals KEBIJAKAN PEMBERIAN TAMBAHAN PERBAIKAN PENGHASILAN PEMERINTAH KABUPATEN KEDIRI

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Anang Siswahyudi
Keyword(s):  
Employee Performance ◽  
Policy Formulation ◽  
Income Policy ◽  
Performance Achievement ◽  
Performance Variables ◽  
Income Disparities ◽  
District Government ◽  
And Performance ◽  
Employee Attendance ◽  
Selection Of

This research aims to describe the implementation of additional refinement income policy in Kediri Regency. The result shows that: 1. The process of compiling policy runs in a planned and system according to the stage of policy formulation. In identification issues of administration, the wording has been based on strategic topics such as a). The condition of the reality of the performance of employees tends to be lower, b). The level of welfare and income disparities rate for employees. In taking the model or the alternative selection of policy is an interracial process between bureaucracy elite actors in the district government of Kediri which influences the form of additional refinement income policy determination 2). The type of other refinement income policy of Kediri district government is acquired through three variables: position, presence, and employee performance; 3). In the implementation of additional refinement, income policy has been supported by the system, and the existing plan in the operation of finger online towards employee attendance and performance variables through the instrument of performance achievement is made at the end of the year. In the implementation of the other variables based on positions. In the application of the three variables seem less effective in terms of performance variables because it does not reflect the performance of employees every day, while in the acquisition of additional refinement income policy is still perceived disparities between staff employees with the structural employees consequently have not been able to improve performance significantly to the lower level employees. 

The CHAL336 Benchmark Set: How Well Do Quantum-Chemical Methods Describe Chalcogen-Bonding Interactions?

2021 ◽  
Author(s):  
Nisha Mehta ◽  
Thomas Fellowes ◽  
JONATHAN WHITE ◽  
Lars Goerigk
Keyword(s):  
Density Functional ◽  
Noncovalent Interactions ◽  
Interaction Energies ◽  
Chemical Methods ◽  
Dft Methods ◽  
The Past ◽  
Quantum Chemical Methods ◽  
London Dispersion ◽  
High Level ◽  
Selection Of

<div> <div> <div> <p>We present the CHAL336 benchmark set—the most comprehensive database for the assessment of chalcogen-bonding (CB) interactions. After careful selection of suitable systems and identification of three high-level reference methods, the set comprises 336 dimers each consisting of up to 49 atoms and covers both σ- and π-hole interactions across four categories: chalcogen-chalcogen, chalcogen-π, chalcogen-halogen, and chalcogen-nitrogen interactions. In a subsequent study of DFT methods, we re- emphasize the need for using proper London-dispersion corrections when treating noncovalent interactions. We also point out that the deterioration of results and systematic overestimation of interaction energies for some dispersion-corrected DFT methods does not hint at problems with the chosen dispersion correction, but is a consequence of large density-driven errors. We conclude this work by performing the most detailed DFT benchmark study for CB interactions to date. We assess 98 variations of dispersion- corrected and -uncorrected DFT methods, and carry out a detailed analysis of 72 of them. Double-hybrid functionals are the most reliable approaches for CB interactions, and they should be used whenever computationally feasible. The best three double hybrids are SOS0-PBE0-2-D3(BJ), revDSD-PBEP86-D3(BJ), and B2NCPLYP-D3(BJ). The best hybrids in this study are ωB97M-V, PW6B95-D3(0), and PW6B95-D3(BJ). We do not recommend using any lower-rung DFT methods nor the popular B3LYP and MP2 approaches, which have been used to describe CB interactions in the past. We hope to inspire a change in computational protocols surrounding CB interactions that leads away from the commonly used, popular methods to the more robust and accurate ones recommended herein. We would also like to encourage method developers to use our set for the investigation and reduction of density-driven errors in new density functional approximations. </p> </div> </div> </div>

scholarly journals The CHAL336 Benchmark Set: How Well Do Quantum-Chemical Methods Describe Chalcogen-Bonding Interactions?

2021 ◽  
Author(s):  
Nisha Mehta ◽  
Thomas Fellowes ◽  
JONATHAN WHITE ◽  
Lars Goerigk
Keyword(s):  
Density Functional ◽  
Noncovalent Interactions ◽  
Interaction Energies ◽  
Chemical Methods ◽  
Dft Methods ◽  
The Past ◽  
Quantum Chemical Methods ◽  
London Dispersion ◽  
High Level ◽  
Selection Of

<div> <div> <div> <p>We present the CHAL336 benchmark set—the most comprehensive database for the assessment of chalcogen-bonding (CB) interactions. After careful selection of suitable systems and identification of three high-level reference methods, the set comprises 336 dimers each consisting of up to 49 atoms and covers both σ- and π-hole interactions across four categories: chalcogen-chalcogen, chalcogen-π, chalcogen-halogen, and chalcogen-nitrogen interactions. In a subsequent study of DFT methods, we re- emphasize the need for using proper London-dispersion corrections when treating noncovalent interactions. We also point out that the deterioration of results and systematic overestimation of interaction energies for some dispersion-corrected DFT methods does not hint at problems with the chosen dispersion correction, but is a consequence of large density-driven errors. We conclude this work by performing the most detailed DFT benchmark study for CB interactions to date. We assess 98 variations of dispersion- corrected and -uncorrected DFT methods, and carry out a detailed analysis of 72 of them. Double-hybrid functionals are the most reliable approaches for CB interactions, and they should be used whenever computationally feasible. The best three double hybrids are SOS0-PBE0-2-D3(BJ), revDSD-PBEP86-D3(BJ), and B2NCPLYP-D3(BJ). The best hybrids in this study are ωB97M-V, PW6B95-D3(0), and PW6B95-D3(BJ). We do not recommend using any lower-rung DFT methods nor the popular B3LYP and MP2 approaches, which have been used to describe CB interactions in the past. We hope to inspire a change in computational protocols surrounding CB interactions that leads away from the commonly used, popular methods to the more robust and accurate ones recommended herein. We would also like to encourage method developers to use our set for the investigation and reduction of density-driven errors in new density functional approximations. </p> </div> </div> </div>

scholarly journals Assessing the Nutrient Adequacy in China’s Food Supply from 1965 to 2018

Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2734
Author(s):  
Ao Liu ◽  
Aixi Han ◽  
Li Chai
Keyword(s):  
Food Supply ◽  
Sharp Increase ◽  
Food System ◽  
National Level ◽  
Nutrient Supply ◽  
Evidence Based ◽  
Supply Side ◽  
Nutrient Adequacy ◽  
The Past ◽  
High Level

Nutritional intake has important impacts on human health. A sufficient supply of nutrients is required to ensure high-level nutrition in a population. Assessment of nutrient supply adequacy can help to develop evidence-based policies and thereby promote public health. This study estimates the supply adequacy of nutrients in China’s food system from 1965 to 2018 at the national level, aiming to reveal whether the supply of nutrients meets the demand. The results show that the nutrient supply in China’s food system has experienced a sharp increase in the past five decades, and the deficiency in nutrient supply has been greatly mitigated. Although most nutrients such as potassium are already sufficiently supplied in China’s current food system, some nutrients, especially calcium and zinc, still need a further enlarged supply to improve the nutrition condition of the Chinese population. Besides encouraging a healthy diet, supply-side regulation, e.g., fortification and enrichment, is also needed to improve nutrient availability. This study helps people better understand the development and current situation of nutrient adequacy in China’s food supply, thereby providing information and implications for policymakers.

A Descriptive-Comparative Study of Implementation and Performance of Family Physician Program in Iran and Selected Countries

2020 ◽  
Author(s):  
Bita SEPEHRI ◽  
Reza GHAFFARI ◽  
Alireza JEDDIAN ◽  
Fariba SALEK ◽  
Robabeh EMROUZI ◽  
...  
Keyword(s):  
Comparative Study ◽  
Family Physician ◽  
The Past ◽  
Study Results ◽  
Ease Of Access ◽  
And Performance ◽  
Access To Data ◽  
Implementation Status ◽  
Criteria For Selection ◽  
Selection Of

Background: The implementation of Family Physician Program (FPP) in Iran during the past decade, despite of its numerous achievements, has faced many challenges. We aimed to compare the implementation and the performance of FPP in Iran with selected countries, in order to analyze those challenges and suggest potential solutions. Methods: This current descriptive-comparative study was conducted in 2015. The implementation and the performance of the FPP in Iran and six countries (Canada, Australia, United Kingdom, Denmark, United States and the Netherlands) were described and compared. The criteria for selection of these countries were the existence of well-established FFPs and ease of access to data required to conduct the research. A documentation checklist of the implementation status and FPP practice was prepared. The checklist’s content validity was established by an independent 10 member expert panel, specializing in the field of Family Medicine. The conclusive checklist was finalized for each country, based on inter-rater agreement of the three researchers and used as a basis for this comparative study. Results: This study revealed significant differences in implementation of the FPP and relatively low differences in FPP performance between Iran and the selected countries. Conclusion: Implementation and performance of FPP and patient referral system in Iran struggles with serious challenges and burdens, in contrast with the selected reviewed countries. As such, modification of the FPP in Iran seems to be a must. Such modification may include developing educational programs for FPs, clearly defining the duties and practices of FPs, and revising their reimbursement and employment status.

scholarly journals Body sway and performance at competition in male pistol and rifle Olympic shooters

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Daniel Mon ◽  
Maria Zakynthinaki ◽  
Carlos Cordente ◽  
Maria Barriopedro ◽  
Javier Sampedro
Keyword(s):  
Center Of Mass ◽  
National Level ◽  
The Body ◽  
Body Sway ◽  
Significant Relation ◽  
Parametric Test ◽  
Average Maximum ◽  
And Performance ◽  
Pearson Correlations ◽  
Selection Of

Summary Study aim: We examine the body sway differences between a) pistol and rifle and b) elite and national level senior male Olympic shooters, as well as the possible relation between body sway and performance at competition in Olympic shooting. Material and methods: Two body sway tests (feet together and feet apart) were performed by 28 Spanish male senior Olympic shooters just before competition. Performance was measured as the actual score at competition. Total center of mass (COM) areas and average/maximum COM velocities were calculated from force platform data. ANCOVA tests were implemented with age as a covariable. The non-parametric test U of Mann Whitney was used to study the differences between national and elite shooters. Pearson correlations were used to examine the relation between performance and total COM area. Results: At the feet apart position, rifle and elite shooters were found to have statistically less body sway than pistol and national level shooters respectively (total COM areas: F1,25 = 6.7; p < 0.05, and Z = 2.36; p < 0.01). No statistically significant differences were found regarding the feet together position, regardless the level or discipline (total COM areas: F1,25 = 1.49 ; p > 0.05; 1 – β = 0.22, average COM velocities: F1,25 = 0.58; p > 0.05; 1 – β = 0.11, maximum COM velocities: F1,25 = 0.03; p > 0.05; 1 – β = 0.05). No significant relation was found between body sway and performance at competition (feet together: r = 0.13, feet apart: r = 0.14, p > 0.05). Age and body sway were not found to be significantly correlated (F1,25 = 0.23; p > 0.05; 1 – β = 0.08). Conclusions: Easy to carry out, non-specific body sway tests can be used for the selection of novice shooters.

Correlation and Performance Estimation of Clone Detection Tools

2018 ◽  
Vol 9 (2) ◽  
pp. 55-71
Author(s):  
Pratiksha Gautam ◽  
Hemraj Saini
Keyword(s):  
Performance Estimation ◽  
User Requirements ◽  
Clone Detection ◽  
The Past ◽  
And Performance ◽  
Tools And Methods ◽  
Selection Of

Over the past few decades, many tools and methods have been proposed by several researchers to detect clones automatically in programs and software. Nevertheless, it is not yet clear how to evaluate these tools in terms of accuracy, scalability, and portability. However, all of these tools have some merits and limitations but the application of these tools depends on the user requirements, so it is necessary for the user that they should be aware of the tools and its distinguishing aspects. This article presents the performance of six clone detection tools in terms of accuracy, scalability, and portability. The aim of this study is to make the selection of tools easy for detection of copied code.

scholarly journals Dietary supplements containing prohibited substances: A review (Part 1)

2014 ◽  
Vol 26 (2) ◽  
pp. 59
Author(s):  
Pieter Van der Bijl
Keyword(s):  
Dietary Supplements ◽  
Food Supplement ◽  
Active Components ◽  
Ephedra Sinica ◽  
The Past ◽  
Chemical Agents ◽  
World Anti Doping Agency ◽  
And Performance ◽  
Increased Strength ◽  
Selection Of

Dietary supplements and chemical agents have been used for a number of decades among athletes striving to achieve increased strength and performance. This has led to a huge, growing market for the food supplement industry. The latter’s products are classified as ‘foods’ rather than drugs and are therefore free of the stringent requirements for registration of pharmaceuticals, i.e. no safety and efficacy data are required prior to registration. During the past decade, some dietary supplements have been shown to contain pharmaceutically active components not adequately identified on their package labels. These pharmaceuticals may have unintentionally entered the product or may have been intentionally added. Although the concentrations of these substances may be low and devoid of health or performance-enhancing effects, they may lead to positive doping tests. In Part 1 of this two-part review, a selection of the World Anti-Doping Agency-prohibited illegal stimulants, i.e. ephedrine, pseudoephedrine, sibutramine and methylhexaneamine, are discussed. Certain food supplement labels do mention the presence of natural sources of illegal stimulants, e.g. Ephedra sinica (ephedrine), but do not refer to the chemical entities of ephedrine and its analogues as such. The pharmacological adverse effects of stimulants, in particular those on the cardiovascular system, are briefly reviewed. Suggestions for avoiding these pitfalls are made. 

Anthropometric characteristics and physiological responses of high level swimmers and performance in 100 m freestyle swimming

2018 ◽  
pp. 3-7
Author(s):  
G. Rozi ◽  
V. Thanopoulos ◽  
N. Geladas ◽  
E. Soultanaki ◽  
M. Dopsaj
Keyword(s):  
Swimming Performance ◽  
Final Model ◽  
Sports Science ◽  
Physiological Variables ◽  
Multiple Stepwise Regression Analysis ◽  
Arm Span ◽  
Anthropometric Characteristics ◽  
And Performance ◽  
High Level ◽  
Selection Of

The effect of the anthropometric characteristics on performances has been the subject of many studies (Reilly, T., Bangsbo, J., & Franks, A. (2000). Anthropometric and physiological predispositions for elite soccer. Journal of Sports Science, 18(9), 669–683) but performance also depends on different physiological parameters. The aim of the present study is to define the anthropometric and physiological variables that best predict performance time of 100 m freestyle swimming. Twenty-five competitive male swimmers (age: 15 ± 1.2 years) participated in the research. Multiple stepwise regression analysis showed that arm span is the best predictor of 100 m freestyle swimming performance (r = 0.835). Arm span explains 68.5% of the variance of dependent variable (Adj R2: 0.685). In the final model, the variables that best describe 100 m freestyle swimming are the number of strokes of 100 m freestyle swimming, triceps skinfold, pelvis and shoulders width (Adj R2: 0.882). These findings confirm the importance of the anthropometric variables for swimming performance and could help coaches in the selection of high-level athletes.

Sign in / Sign up

Export Citation Format

Share Document