Pubertal period influence on sports results among 13-14 year-old boys swimmers

The aim of this research work was to reveal specific peculiarities of young swimmers training, taking into account their pubescence in terms of the long-term training concept. During the research it was defined that methodological support of spots training for a long-term period should contain not only prognostic model of prospective results achievement. It also should analyze individual peculiarities of pubertal period. During the research we used the official results of competitions protocols, the results of general and special physical readiness tests, resume of the leading swimming coaches. For statistical data handling we used quantitative variables, presented in a form ± of a standard error of the mean value (М ± m). The results were considered as statistically significant in terms of р < 0,05. Correlation analysis is realized using Pearson correlation coefficient. The held research helped to define typical characteristics of pubertal period in teen-agers swimmers, timely correct the training process. It was stated that athletes adaptation to the training and competitive loads in pubertal period was characterized by different degree of sports results increase and correlated with the intensity of hormonal changes. The boys with distinct features of pubertal period were the leaders at short distances, but showed coordinating abilities decrease. The athletes, whose somatic-gender changes didn’t have extreme indices or had prolonged duration, showed stable sports results increase mainly at long distances.

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Long-term dynamics and destruction of marsh vegetation in the Kolokolkova Bay of the Barents Sea

Vegetation of Russia ◽

10.31111/vegrus/2012.21.66 ◽

2012 ◽

pp. 66-77 ◽

Cited By ~ 4

Author(s):

I. A. Lavrinenko ◽

O. V. Lavrinenko ◽

D. V. Dobrynin

Keyword(s):

Species Composition ◽

Plant Communities ◽

Barents Sea ◽

Mean Value ◽

Marsh Vegetation ◽

Composition And Structure ◽

The Mean ◽

Species Composition And Structure

The satellite images show that the area of marshes in the Kolokolkova bay was notstable during the period from 1973 up to 2011. Until 2010 it varied from 357 to 636 ha. After a severe storm happened on July 24–25, 2010 the total area of marshes was reduced up to 43–50 ha. The mean value of NDVI for studied marshes, reflecting the green biomass, varied from 0.13 to 0.32 before the storm in 2010, after the storm the NDVI decreased to 0.10, in 2011 — 0.03. A comparative analysis of species composition and structure of plant communities described in 2002 and 2011, allowed to evaluate the vegetation changes of marshes of the different topographic levels. They are following: a total destruction of plant communities of the ass. Puccinellietum phryganodis and ass. Caricetum subspathaceae on low and middle marches; increasing role of halophytic species in plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. typicum on middle marches; some changes in species composition and structure of plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. festucetosum rubrae on high marches and ass. Parnassio palustris–Salicetum reptantis in transition zone between marches and tundra without changes of their syntaxonomy; a death of moss cover in plant communities of the ass. Caricetum mackenziei var. Warnstorfia exannulata on brackish coastal bogs. The possible reasons of dramatic vegetation dynamics are discussed. The dating of the storm makes it possible to observe the directions and rates of the succession of marches vegetation.

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14C Release in Various Chemical Forms With Gaseous Effluents From the Paks Nuclear Power Plant

Radiocarbon ◽

10.1017/s0033822200012352 ◽

1989 ◽

Vol 31 (03) ◽

pp. 754-761 ◽

Cited By ~ 26

Author(s):

Ede Hertelendi ◽

György Uchrin ◽

Peter Ormai

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Liquid Scintillation ◽

Mean Value ◽

Scintillation Counting ◽

Pressurized Water ◽

The Mean ◽

Water Reactors

We present results of airborne 14C emission measurements from the Paks PWR nuclear power plant. Long-term release of 14C in the form of carbon dioxide or carbon monoxide and hydrocarbons were simultaneously measured. The results of internal gas-proportional and liquid scintillation counting agree well with theoretical assessments of 14C releases from pressurized water reactors. The mean value of the 14C concentration in discharged air is 130Bqm-3 and the normalized release is equal to 740GBq/GWe · yr. > 95% of 14C released is in the form of hydrocarbons, ca 4% is apportioned to CO2, and <1% to CO. Tree-ring measurements were also made and indicated a minute increase of 14C content in the vicinity of the nuclear power plant.

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Lateral Antebrachial Cutaneous Nerve as a Donor Source for Digital Nerve Grafting: A Concept Revisited

The Open Orthopaedics Journal ◽

10.2174/1874325001711011041 ◽

2017 ◽

Vol 11 (1) ◽

pp. 1041-1048 ◽

Cited By ~ 4

Author(s):

Mehmet Bekir Unal ◽

Kemal Gokkus ◽

Evrim Sirin ◽

Eren Cansü

Keyword(s):

Pearson Correlation ◽

Mean Value ◽

Cutaneous Nerve ◽

Digital Nerve ◽

Mean Values ◽

Nerve Grafts ◽

The Mean ◽

The Difference ◽

Mean Time

Objective: The main objective of this study is to evaluate the availability of lateral antebrachial cutaneous nerve (LACN) autograft for acute or delayed repair of segmented digital nerve injuries. Patients and Methods: 13 digital nerve defects of 11 patients; treated with interposition of LACN graft that harvested from ipsilateral extremity were included in the study. Mean follow up period was 35, 7 months. The mean time from injury to grafting is 53, 3 days. The results of the mean 2PDT and SWMT values of injured /uninjured finger at the end of follow up period were evaluated with Paired T test. The correlation between the defect length and the difference of 2PDT, SWMT values between the uninjured and injured finger at the end of follow up period; were evaluated with Pearson - correlation analysis. Results: The mean value of our 2PDT and SWMT results are ~5,923, ~3, 52, respectively in which can be interpreted between the normal and diminished light touch. The defect length and difference percentage of SWMT values is positively and significantly correlated statistically. Mean length of interposed nerve grafts was 18.5 mm. The age of the patient and the mean values of 2PDT and SWMT with the difference % of 2PDT and % of SWMT are not statistically correlated. Conclusion: Based on results regarding sensory regaining at recipient side and negligible sensory deficit at harvesting side, we suggest that lateral antebrachial cutaneous nerve might be a valuable graft option for digital nerve defects.

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Multi-periodic climate dynamics: spectral analysis of long-term instrumental and proxy temperature records

Climate of the Past ◽

10.5194/cp-9-447-2013 ◽

2013 ◽

Vol 9 (1) ◽

pp. 447-452 ◽

Cited By ~ 22

Author(s):

H.-J. Lüdecke ◽

A. Hempelmann ◽

C. O. Weiss

Keyword(s):

Pearson Correlation ◽

Temperature Drop ◽

Ice Cores ◽

Climate Dynamics ◽

Fluctuation Analysis ◽

Harmonic Decomposition ◽

The Mean ◽

Temperature Records ◽

Instrumental Records

Abstract. The longest six instrumental temperature records of monthly means reach back maximally to 1757 AD and were recorded in Europe. All six show a V-shape, with temperature drop in the 19th and rise in the 20th century. Proxy temperature time series of Antarctic ice cores show this same characteristic shape, indicating this pattern as a global phenomenon. We used the mean of the six instrumental records for analysis by discrete Fourier transform (DFT), wavelets, and the detrended fluctuation analysis (DFA). For comparison, a stalagmite record was also analyzed by DFT. The harmonic decomposition of the abovementioned mean shows only six significant frequencies above periods over 30 yr. The Pearson correlation between the mean, smoothed by a 15-yr running average (boxcar) and the reconstruction using the six significant frequencies, yields r = 0.961. This good agreement has a > 99.9% confidence level confirmed by Monte Carlo simulations. It shows that the climate dynamics is governed at present by periodic oscillations. We find indications that observed periodicities result from intrinsic dynamics.

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A SLR Pre-Processing Algorithm Based on Satellite Signature Effect

Applied Sciences ◽

10.3390/app11198880 ◽

2021 ◽

Vol 11 (19) ◽

pp. 8880

Author(s):

Bowen Guan ◽

Cunbo Fan ◽

Ning An ◽

Ricardo Cesar Podesta ◽

Dra Ana Pacheco ◽

...

Keyword(s):

Mean Value ◽

Observation Data ◽

Short Term ◽

Error Sources ◽

Effect Model ◽

The Mean ◽

The Stability ◽

First Time ◽

Satellite Signature Effect

As one of the major error sources, satellite signature effect should be reduced or even erased from the distribution of the post-fit residuals to improve the ranging precision. A simulation of satellite signature effect removal process for normal point algorithm is conducted based on a revised model of satellite response, which fully considers the structural and distribution characteristics of retroreflectors. In order to eliminate both long-term and short-term satellite signature effect, a clipping method for SLR data processing is proposed by defining the clipping location as 5.6 mm away from the mean value of the long-term fit residuals to select effective returns for normal points. The results indicate that, compared to normal points algorithm, the RMS per NP of LAGEOS-1 observation data processed by the clipping method is reduced from 62.90 ± 9.9 mm to 56.07 ± 4.69 mm, and the stability of RMS is improved 53%. This study improves the satellite signature effect model and simulates the fluctuation of normal points caused by satellite signature effect for the first time. The new method based on the simulation of satellite signature effect has stronger robustness and applicability, which can further minimize the influence of satellite signature effect on the SLR production and significantly improve the data property.

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Relationship of Psycho-Traumic Problem (Nightmares) with Students Physical, Mental Health and Their Academic Achievement at Secondary Level Due to War Hazards and U.S. Drone Strikes in North Wazirista

Global Educational Studies Review ◽

10.31703/gesr.2016(i-i).05 ◽

2016 ◽

Vol I (I) ◽

pp. 31-37

Author(s):

Mati Ullah ◽

Muhammad Saqib Khan ◽

Noman Ahmad Khan

Keyword(s):

Academic Achievement ◽

Pearson Correlation ◽

Sampling Technique ◽

Mean Value ◽

School Students ◽

Face To Face ◽

Achievement Data ◽

Drone Strikes ◽

The Mean ◽

Relationship Of

Nightmares badly influence health and learning. Population of the study comprised of all boys and girls of Secondary Schools in NWA whereas (n=403) respondents, 202(50.12%) boys and 201(49.88%) girls were taken as sample from the entire population. Face-to-face questionnaire was used to collect data from respondents through stratified random sampling technique. The key objective of the study was to examine relationship of nightmares with students’ health and their academic achievement. Data was delimited to Secondary School students in NWA. Data was statistically analyzed through SPSS by using Pearson Correlation. The respondents perceived nightmares responsible for students’ poor health and low academic achievement. The Mean value of nightmare was 3.2109, SD, 1.43263, and (p, .000 < 0.05) with negative ‘r’= - .355** which shows negative correlation of nightmares with students’ health and their academic achievement. Results and conclusions were drawn. Recommendations were suggested for future researchers and further improvement in the study.

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Characteristics of cold–warm variation in the Hetao region and its surrounding areas in China during the past 5000 years

Climate of the Past ◽

10.5194/cp-6-475-2010 ◽

2010 ◽

Vol 6 (4) ◽

pp. 475-481 ◽

Cited By ~ 1

Author(s):

M.-Q. Li ◽

Q.-S. Ge ◽

Z.-X. Hao ◽

J.-Y. Zheng ◽

S.-F. He

Keyword(s):

Climate Changes ◽

Mean Value ◽

Data Series ◽

Proxy Data ◽

Average Temperature ◽

The Past ◽

The Mean ◽

Temperature Proxy ◽

Surrounding Areas

Abstract. Using six long-term temperature proxy data series derived from different natural evidences, including pollens and lake-sediments, we reconstructed a temperature series with a 100-yr time resolution for the past 5000 yr in the Hetao region and its surrounding areas. The resulting series suggests that, on a millennial timescale, temperatures in the region were higher than the mean value of the whole series during the 5000~2600 years before present (yr BP) period, and became relatively low comparing with the average temperature of the whole series after 2600 yr BP. Within these two periods, temperature fluctuations comprising numerous short, multi-centennial intervals also existed. A comparison between our reconstructed series and other series in China and across the Northern Hemisphere indicate that, on a long-term scale, cold–warm variations had been in phase across the whole hemisphere during the past 5000 years; on the century to multi-century scale, the beginning and the ending times varied from region to region, thus implying that climate changes did not occur simultaneously in different regions.

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The Loss of Vigour and Sowing Value of Yellow Lupin Seeds (Lupinus luteus L.) as a Result of Mechanical Harvesting

Plant Breeding and Seed Science ◽

10.1515/plass-2016-0005 ◽

2016 ◽

Vol 73 (1) ◽

pp. 53-62

Author(s):

Agnieszka Faligowska ◽

Grażyna Szymańska ◽

Katarzyna Panasiewicz

Keyword(s):

Electrical Conductivity ◽

Seed Quality ◽

Pearson Correlation ◽

Mean Value ◽

Lupinus Luteus ◽

Pearson Correlation Coefficient ◽

Yellow Lupin ◽

Lupin Seeds ◽

The Mean

AbstractThe aim of the study was to determine the effect of mechanical harvest on the seed quality of yellow lupin. Two effects were studied: the cultivar of yellow lupin (the indeterminate cultivar - Mister and the determinate cultivar - Perkoz) and harvest methods: hand-picked plants with manual shelling of seeds as a control and mechanical shelling with a plot harvester. In comparison with manual shelling of seeds, the mechanical harvest reduced the seed germination and increased the number of abnormal seeds both cultivars. Determinate cultivar was more sensitive, because the loss of its quality was higher (germination of 10%) than indeterminate cultivar (6%). Perkoz had also higher electrical conductivity, with the mean value of 34.3 μS × cm−1× g−1. Manual shelled seeds were characterized by a significantly lower leakage of exudates (24.9 μS × cm−1× g−1), and hence, it exhibited greater vigour than mechanical harvested seeds. Most relations of Pearson correlation coefficient between vigour tests and germination were strong or practically functional.

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Heart Rate Variability Assessment by the Entropy Parameters during Sleep

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.i7230.079920 ◽

2020 ◽

Vol 9 (9) ◽

pp. 468-472

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Eye Movement ◽

Discrimination Performance ◽

Conditional Entropy ◽

Approximate Entropy ◽

Mean Value ◽

Sleep Stages ◽

The Mean

The nonlinear heart rate variability (HRV) parameter quantifies autonomic nervous system (ANS) activity based on the complexity or irregularity of an HRV dataset. At present, among various entropy-related parameters during sleep, approximate entropy (ApEn) and sample entropy (SampEn) are not as well understood as other entropy parameters such as Shannon entropy (SE) and conditional entropy (CE). Therefore, in this study, we investigated the characteristics of ApEn and SampEn to differentiate a rapid eye movement (REM) and nonrapid eye movement (NREM) for sleep stages. For nonlinear sleep HRV analysis, two target 10-minute, long-term HRV segments were obtained from each REM and NREM for 16 individual subjects. The target HRV segment was analyzed by moving the 2-minute window forward by 2 s, resulting in 240 results of each ApEn and SampEn. The ApEn and SampEn were averaged to obtain the mean value and standard deviation (SD) of all the results. SampEn provides excellent discrimination performance between REM and NREM in terms of the mean and SD (p<0.0001 and p=0.1989, respectively; 95% CI), but ApEn was inferior to SampEn (p=0.1980 and p=0.9931). The results indicate that SampEn, but not ApEn could be used to discriminate REM from NREM and detect various sleep-related incidents.

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Moral Disengagement and Aggression in Fight Sport Athletes

Journal of Education and Training Studies ◽

10.11114/jets.v7i7.4244 ◽

2019 ◽

Vol 7 (7) ◽

pp. 118

Author(s):

Burcu Güvendi ◽

Ayşe Türksoy Işım

Keyword(s):

Moral Disengagement ◽

Pearson Correlation ◽

Verbal Aggression ◽

Mean Value ◽

Independent Variables ◽

Significant Difference ◽

Pearson Correlation Analysis ◽

The Mean ◽

The Relationship ◽

Positive Significant Correlation

The goal of this study is to investigate the moral disengagement and aggression levels of fight sport athletes according to several independent variables and reveal the relationship among them. The study group consisted of totally 207 fight sport athletes, 88 females and 119 males with age = 21,99 ± 4,92 and year of sport = 6,14 ± 5,42. “The Scale of Moral Disengagement in Sport” and “The Questionnaire of Buss-Perry Aggression” were used as data collection tools. Descriptive statistics, t test, ANOVA and Pearson Correlation analysis were used in the analysis of data. While the mean of physical aggression of athletes was found as the highest, verbal aggression had the lowest mean value within the sub-dimensions of aggression, and they stated that they somewhat disagreed with the moral disengagement. It was found that there was a moderate positive significant correlation between moral disengagement and sub-dimensions of anger, hostility, physical and verbal aggressions of aggression scale. Significant difference was observed in the dimension of moral disengagement in accordance with age and year of sport. Physical and verbal aggression scores of males are significantly higher according to gender. The aggression and moral disengagement scores of kickboxers are significantly higher than those of taekwondo athletes in line with the branch. To conclude, it was determined that fight sport athletes did not approve moral disengagement in sport, however, the case of moral disengagement of athletes, who were younger and started the sport recently, was higher and they mostly showed the behaviour of aggression physically.

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