Determination of fighting styles of qualified veteran boxers based on cluster analysis of biomechanical and psychophysiological indicators

Purpose: to reveal the styles of fighting veteran boxers on the basis of a multivariate analysis of psychophysiological and biomechanical indicators. Material and methods. The study involved 42 qualified veteran boxers (age 45-50 years). As research methods, we used a biomechanical analysis of the indicators of the speed of movement of various points and the values of the angles in the joints when performing a direct blow by boxers. The psychophysiological method was used to determine the time of a simple and complex reaction under standard conditions and in various testing modes. We used the method of cluster analysis to distribute athletes into groups using the SPSS - 17.0 program. Within the groups, the athletes are as similar as possible to each other in terms of the analyzed indicators, and between the groups they differ as much as possible. The analysis of the groups of athletes obtained with the help of cluster analysis made it possible to identify athletes with the following styles of fighting: tempo, game, power. Results. Cluster analysis of psychophysiological and biomehanical testing showed the presence of 3 groups of athletes. The clusters were named as follows: Cluster 1 - "Speed and coordination endurance", corresponds to the boxers of the pace of the fight; Cluster 2 - "Speed", corresponds to the boxers of the game style of fighting; Cluster 3 - "Strength and speed", corresponds to the boxers of the pace of the fight. Biomechanical features of boxers of different styles of fighting are reflected in the trajectories of the points of the fist, elbow, knee. Conclusions. The results of this study should be used when planning the individual training of athletes in boxing and to determine the optimal style of competitive competition for qualified veteran boxers. The proposed methods of psychophysiological and biomechanical testing to determine the individual characteristics of boxers are an effective, fairly accessible and convenient tool for revealing the predisposition of boxers to a certain style of fighting.

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Psychophysiological features of fighters of different tactical styles of conducting competitive duels

Health, sport, rehabilitation ◽

10.34142/hsr.2019.05.03.07 ◽

2019 ◽

Vol 5 (3) ◽

pp. 63

Author(s):

G.O. Ogar ◽

E.I. Lewandowski

Keyword(s):

Cluster Analysis ◽

Hierarchical Cluster Analysis ◽

Hierarchical Cluster ◽

Test Results ◽

Time Switching ◽

The Individual ◽

Switching Attention ◽

Individual Training

Objective: To determine the psychophysiological features of skilled freestyle wrestlers with different tactical ways of fighting.Materials and Methods: The study involved 15 freestyle wrestlers who are students of the H.S. Skovoroda Kharkiv National Pedagogical University. The athletes had experience in free-wrestling from 5 to 7 years, qualification of the Meister kandidat (n = 6) and the 1st sports category (n = 9), age of the examinees - 17-21 years. With the help of V. Schulte's technique, testing of stability of attention and dynamics of efficiency of fighters was carried out. The indicators of switching and distribution of attention of the investigated by the method of FD were also tested. Humpback. A hierarchical cluster analysis of psychophysiological test results was conducted, according to which the investigated fighters were divided into two groups. Results: According to the results of testing psychophysiological indicators, some differences were found between the groups. Cluster analysis of testing results of psychophysiological features of freestyle wrestlers divided the studied athletes into two groups. The first group includes fighters who lead competitive duels against defense, using mostly counter-attacks (defensive, counter-attacking style of conducting a competitive duel). The second group of investigated fighters included athletes, who are fighting in an active style (attacking style of running a competitive fight). The wrestlers of the second group, in terms of performance (p <0.001) outperform the athletes of the first group. The first group studied showed a better time switching attention than their opponents (p<0.05).Conclusions: The results of the study can be used in the individual training of fighters to determine the optimal tactical manner of the fight for specific athletes.

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Comparative Analysis of Motivational Readiness for Professional Self-determination in Adolescents in Specific Social Situations of Development

Psychological-Educational Studies ◽

10.17759/psyedu.2015070115 ◽

2015 ◽

Vol 7 (1) ◽

pp. 154-164 ◽

Cited By ~ 1

Author(s):

I.S. Aron

Keyword(s):

Behavioral Problems ◽

Deviant Behavior ◽

Social Situation ◽

Individual Characteristics ◽

Self Determination ◽

Social Situations ◽

Motivational Readiness ◽

Professional Self ◽

The Individual

We present the results of investigation of the motivational component of psychological readiness for professional self-determination in adolescents in specific social situations of development. It was assumed that in a particular deficit social situation of development under the influence of negative social context the formation of motivational readiness for professional self-determination is hindered. We revealed significant differences in the level of development of motivational readiness for professional self-determination of pupils of the school for children with behavioral problems, pupils of boarding school for orphans and pupils of regular secondary school. It is shown that the motivational sphere of adolescents with deviant behavior and adolescents without parental care is characterized by focus on the failure avoidance, predominance of external motives of choice of profession, lack of awareness of their values and motives. The obtained results can serve as a basis for the development of technologies of psychological and pedagogical support of professional self-determination of teenagers with consideration of their age and development and of the individual characteristics due to the aggravation of social situation of development.

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An Algorithm for the Rational Choice of Sodium Profile during Hemodialysis

The International Journal of Artificial Organs ◽

10.1177/039139889702001202 ◽

1997 ◽

Vol 20 (12) ◽

pp. 659-672 ◽

Cited By ~ 11

Author(s):

M. Ursino ◽

L. Colì ◽

V. Dalmastri ◽

F. Volpe ◽

G. La Manna ◽

...

Keyword(s):

Measurement Errors ◽

A Priori ◽

Sodium Concentration ◽

Individual Characteristics ◽

Dialysis Session ◽

A New Technique ◽

The Individual ◽

Dialysate Sodium

The incidence of intradialytic disequilibrium syndrome and symptomatic hypotension has increased significantly among dialysis patients over the last ten years. Profiled hemodialysis (PHD) is a new technique, based on the intradialytic modulation of dialysate sodium concentration, which aspires to reduce to previous imbalances. This paper presents a new algorithm for the determination of a rational dialysate sodium profile during PHD. A mathematical model of solute kinetics, monocompartmental for sodium and bicompartmental for urea is used. The algorithm allows the sodium profile to be elaborated a priori before each dialysis session, respecting the individual sodium mass removal and weight gain. A procedure allowing the adjustment of the method to the individual characteristics, on the basis of routine measurements performed before each session is also presented. The method was validated during seven dialysis sessions. Comparison between data measured in vivo and those predicted by the model showed standard deviations corresponding to the range of laboratory measurement errors: 1.50 mEq/L for sodium and 0.87 mmol/L for urea. In vivo implementation of PHD by our algorithm allows one to remove an amount of sodium close to that established a priori on the basis of patient's need.

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Correlation between Individual Differences in Rats' Performance and the Outcome of Social Worker-Parasite Relationship

Psychological Reports ◽

10.2466/pr0.1979.45.2.631 ◽

1979 ◽

Vol 45 (2) ◽

pp. 631-637

Author(s):

Márcio José Capriglione ◽

Lúcio Flávio ◽

De Sousa Moreira ◽

Jandira Masur

Keyword(s):

Variable Interval ◽

Individual Characteristics ◽

Operant Response ◽

Water Reward ◽

Parasite Relationship ◽

Experimental Cage ◽

The Individual ◽

Skinner Box ◽

Individual Condition ◽

Individual Training

An experiment was designed to predict the outcome of establishing a worker-parasite relationship between rats paired in a modified Skinner box with the water dipper and the bar attached to opposite walls. The rats were first trained individually to press the bar for water reward. After this individual training the reinforcement, besides being contingent to the pressing response, began also to be freely delivered (by the experimenter) in a variable-interval schedule of reinforcement. The number of such sessions each animal took to stop emitting the bar-pressing response was recorded. After stopping the operant response the animals were again trained individually. Following that they were paired in the experimental cage according to the number of sessions they took to stop the bar-press response. After the development of the worker-parasite relationship, categorization into workers and parasites could be predicted according to the number of sessions the rats took to stop the response in the individual condition. Individual characteristics may then play a role, among a multitude of other possible variables, in the outcome of the worker-parasite relationship between rats.

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Optimization of structural brickwork laying joints in concrete blocks

Revista IBRACON de Estruturas e Materiais ◽

10.1590/s1983-41952018000100007 ◽

2018 ◽

Vol 11 (1) ◽

pp. 115-134

Author(s):

M. V. S. CAVALCANTI ◽

A. M. X. FRANCISCO ◽

D. M. RODRIGUES ◽

D. G. SILVA

Keyword(s):

Axial Compression ◽

Behavioral Model ◽

Masonry Structure ◽

Individual Characteristics ◽

Statistical Analyses ◽

Analytical Relation ◽

Joint Thickness ◽

Concrete Blocks ◽

The Individual

Abstract One of the challenges in the investigation of structural masonry is the correlation between the thickness of the laying joints and the global resistance of the masonry. Many authors developed experimental correlations in the attempt to establish an analytical relation between the joint thickness and the resistance of the masonry. All these projects indicate that there are many parameters and considerations to be analyzed in the understanding this relation and in understanding the collapse of the masonry as a whole. Thus, in an attempt to contribute with this field of study, the present paper investigates the influence of the thickness of the mortar laying joint in the resistance of the masonry structure. With the objective of experimentally establishing a relation between the joint thickness and the resistance of the masonry, rupture trials were held to the axial compression of three block prisms laid with five series of thicknesses: 8mm, 12.5mm, 10mm, 15mm and 20mm. The physical and mechanic description of all the components that made up the masonry were done separately, complying with the regulations. Through a simplified statistical analyses, presented at the end of this study, values of resistance of each series of prisms associated to a specific thickness for the laying joint are shown. Through the comparison of the specific results of the analyzed specimen, we arrived at the suggestion of a better performance joint and it was also possible to establish a behavioral tendency, through the comparison of results, helping in the understanding of how the block-joint set behave monolithically from the determination of the individual characteristics of each element. Which is one of the keys that will permit the constructions of a behavioral model capable of assisting structural analysts in their structural masonry dimensioning techniques.

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Association between molecular subtype of esophageal squamous cell carcinoma and survival of patients.

Journal of Clinical Oncology ◽

10.1200/jco.2019.37.15_suppl.e15520 ◽

2019 ◽

Vol 37 (15_suppl) ◽

pp. e15520-e15520

Author(s):

Denis S. Kutilin ◽

Oleg Ivanovich Kit ◽

Aleksey Yurievich Maksimov ◽

Natalia A. Petrusenko ◽

Tatiana Yu. Myagkova ◽

...

Keyword(s):

Cluster Analysis ◽

Overall Survival ◽

Squamous Cell Carcinoma ◽

Esophageal Squamous Cell Carcinoma ◽

Cell Carcinoma ◽

Molecular Typing ◽

Molecular Subtypes ◽

Southern Russia ◽

Cluster 2

e15520 Background: Esophageal squamous cell carcinoma (ESCC) comprises a group of heterogeneous tumors with various prognoses which does not depend on clinical signatures (TNM, tumor location). In recent years, different molecular subtypes of ESCC have been identified in different populations; however, such studies have not been conducted in the population of Southern Russia. The purpose of the study was the molecular typing of ESCC in patients of the Southern Russia, and the assessment of survival of patients with different molecular subtypes of ESCC. Methods: Tissue sections from FFPE blocks from 124 ESCC patients were studied. Tumor and normal cells were isolated using laser microdissection (Palm MicroBeam, Carl Zeiss). Molecular typing of ESCC was performed by the determination of copy number variation (CNV) of 8 genes ( CUL3, ATG7, SOX2, TP63, YAP1, VGLL4, CDK6, KDM6А) using Real-Time qPCR and 7 somatic mutations (SNP) ( NFE2L2 (c.85G > A), NOTCH1 (c.1379C > T), NOTCH1 (c.1451G > T), ZNF750 (c.414C > A), ZNF750 (c.1621G > A), SMARCA4 (p.Q758*, c.2272C > T), KMT2D (Q5170* , c.15508C > T)) using Sanger direct sequencing method. The differences were assessed by the Mann-Whitney test. For the cluster analysis (Hierarchical Clustering, Euclidean distance), we used R scripts. Survival of patients was analyzed by the Kaplan–Meier method, and differences between survivals in groups were assessed by the log-rank test. Results: Cluster analysis allowed determination of 3 clusters of ESCC samples different in CNV (p < 0.005): cluster 1 (n = 39) demonstrated increased CNV of SOX2, TP63, YAP1 and decreased CNV of CUL3, ATG7 and VGLL4, cluster 2 (n = 82) – increased CNV of CDK6 and decreased CNV of KDM6А, cluster 3 (n = 3) – decreased CNV of ATG7. Samples of cluster 1 showed c.85G > A mutation in the NFE2L2 gene, cluster 2 - c.1379C > T and c.1451G > T in NOTCH1, c.414C > A and c.1621G > A in ZNF750, and cluster 3 - p.Q758* and Q5170* in SMARCA4 and KMT2D, respectively. Thus, we differentiated 3 molecular subtypes of ESCC (1,2,3). Overall survival rates were higher in ESCC2 (16.1±2.0 months), the lowest ones – in ESCC3 (0.88±0.56 months), with intermediate values in ESCC1 (4.6±0.74 months). Differences between the groups were statistically significant (p = 0.00001). Conclusions: Based on the differential distinctions in SNP and CNV of the genes, we verified 3 molecular subtypes of ESCC with different overall survival of patients.

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A SINGLE-BAMPLE METHOD FOR ESTIMATING RESISTANCE OF PARTS

Transport development ◽

10.33082/td.2018.2-3.11 ◽

2018 ◽

pp. 111-120

Author(s):

A.G. Kibakov ◽

Yu.M. Khomyak

Keyword(s):

Fatigue Resistance ◽

Endurance Limit ◽

Fatigue Curve ◽

Individual Characteristics ◽

Fractographic Analysis ◽

Approximate Estimate ◽

The Individual ◽

Weibull Equation

The determination of the individual characteristics of the fatigue resistance of the objects is proposed using fractographic analysis of their fractures, which gives an approximate estimate of the voltage corres-ponding to one cycle and allows one to construct an oblique portion of the fatigue curve from the test of one object and calculate the endurance limit from the Weibull equation.

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ANALISIS ATP-WTP PENUMPANG KERETA REL LISTRIK LINTAS BOGOR-JAKARTA KOTA

JMTS: Jurnal Mitra Teknik Sipil ◽

10.24912/jmts.v0i0.10454 ◽

2021 ◽

Vol 4 (1) ◽

pp. 65

Author(s):

Jeffry Nathanael ◽

Dewi Linggasari ◽

Hokbyan Angkat

Keyword(s):

Willingness To Pay ◽

Research Data ◽

Individual Characteristics ◽

Service Users ◽

Ability To Pay ◽

The Individual

The determination of Kereta Rel Listrik (KRL) rates needs to consider the value of Ability to Pay (ATP) and Willingness to Pay (WTP) of service users to spend a certain amount of money for the services they get. The purpose of this research was to determine the value of the Ability to Pay (ATP) and Willingness to Pay (WTP) of KRL service users across Bogor-Jakarta Kota. The method of collecting research data online is by giving questionnaires to respondents who use KRL cross Bogor-Jakarta Kota. The research data obtained were then analyzed and information was obtained about the individual characteristics of the respondent, the characteristics of the respondent's trip, the amount of ATP value, and the amount of the WTP value. Based on the analysis results on the existing tariff of Rp. 3,000, - obtained the value of ATP and WTP is Rp. 3,770, - and Rp. 3,974, -. This shows that the tariff is smaller than ATP, smaller than WTP, so that the current rate is still affordable for users. The 100% condition for ATP and WTP sensitivity is a condition where the increased tariff is proportional to the service received. ABSTRAKPenetapan tarif Kereta Rel Listrik (KRL) perlu mempertimbangkan antara nilai Ability to Pay (ATP) dan Willingness to Pay (WTP) pengguna jasa untuk mengeluarkan sejumlah uang demi pelayanan jasa yang didapatkannya. Tujuan dari penelitian ini adalah mengetahui besaran nilai Ability to Pay (ATP) dan Willingness to Pay (WTP) pengguna jasa KRL lintas Bogor-Jakarta Kota. Metode pengumpulan data penelitian secara online dengan cara memberikan kuesioner kepada responden yang menggunakan KRL lintas Bogor-Jakarta Kota. Data penelitian yang diperoleh kemudian dianalisis dan didapatkan informasi mengenai karakteristik individu responden, karakteristik perjalanan responden, besaran nilai ATP, dan besaran nilai WTP. Berdasarkan hasil analisis pada tarif eksisting sebesar Rp. 3.000,- didapat besaran nilai ATP dan WTP adalah Rp. 3.770,- dan Rp. 3.974,-. Hal ini menunjukkan bahwa tarif tersebut lebih kecil dari ATP lebih kecil dari WTP sehingga tarif yang diberikan saat ini masih dapat terjangkau bagi pengguna. Kondisi 100% pada sensitivitas ATP dan WTP merupakan kondisi dimana tarif yang ditingkatkan sebanding dengan pelayanan yang diterima.

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Refractive Errors in Children with Retinoblastoma

Ophthalmology in Russia ◽

10.18008/1816-5095-2020-1-76-80 ◽

2020 ◽

Vol 17 (1) ◽

pp. 76-80

Author(s):

S. V. Saakyan ◽

A. Iu. Tsygankov ◽

S. S. Tadevosyan ◽

A. A. Makarova ◽

L. V. Kogoleva ◽

...

Keyword(s):

Individual Characteristics ◽

Tumor Localization ◽

Refractive Errors ◽

Initial Examination ◽

Total Cohort ◽

Tumor Lesion ◽

Bilateral Retinoblastoma ◽

The Individual ◽

Healthy Eyes

Purpose. Analysis of refractive errors’ frequency in children with retinoblastoma.Patients and Methods. A retrospective study included 57 children with retinoblastoma (31 male and 26 female) who received treatment in 2013–2017. The criteria for patient selection was the presence of mono- or bilateral retinoblastoma, as well as autorefractometry of both eyes before treatment. In all cases, the study was performed with cycloplegia. The parameters studied included gender, age at the time of the initial examination, visual acuity, spherical and cylindrical component of refraction, the axis of the cylinder.Results. Bilateral retinoblastoma was determined in 34 children (59.6 %), the average age of the patients was 18.0 ± 2.6 months. Monolateral retinoblastoma was detected in 23 patients (40.4 %), the average age at the time of check-up was 26.2 ± 3.1 months. In total, anisometropia of more than 2.0 diopters was detected in 14 patients (24.6 %), of which with monolateral RB in 6 patients (26.1 %) and in bilateral patients in 8 (23.5 %). In 26 cases (45.6 %) anisometropia was determined from 1.0 to 2.0 diopters, of which 41.1 % (n = 14) with bilateral lesion and 52.1 % (n = 12) with monolateral. The frequency of hyperopia over 3.0 diopters in the total cohort was 25.2 %, myopia 3.3 %. Significant differences (p = 0.025) were obtained by comparing the frequency of astigmatism determination of more than 1.0 D (39.6 % in the total cohort versus 13.0 % for healthy eyes). When analyzing the frequency of ametropia depending on age, a trend was observed (0.05 < p < 0.1) to reduce the frequency of hypermetropia and increase the frequency of astigmatism. Additionally, an analysis of the astigmatism’s frequency depending on the tumor localization was made. Patients with central or paracentral localization of the tumor lesion amounted to 69.4 % (n = 25), and from the peripheral — 30.6 % (n = 11) (p = 0.002).Conclusions. In this paper, we analyzed the frequency and nature of refractive errors in children with monolateral and bilateral retinoblastoma. The identified risk factors may affect the development of refractive amblyopia in children with retinoblastoma in more adulthood, which requires the development of an individual approach to the correction of refractive disorders taking into account the localization of tumor foci, the nature of the lesion and the individual characteristics of patients.

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Determining the style of conducting a fight of qualified boxers based on neurodynamic indicators using multivariate analysis methods

Health, sport, rehabilitation ◽

10.34142/hsr.2019.05.02.09 ◽

2019 ◽

Vol 5 (2) ◽

pp. 78

Author(s):

D.V. Safronov ◽

V.Yu. Kozin ◽

Zh.L. Kozina ◽

A.V. Basenko ◽

I.O. Riabenkov ◽

...

Keyword(s):

Cluster Analysis ◽

Nervous System ◽

Expert Assessment ◽

Complex Reaction ◽

Expert Evaluation ◽

Weight Category ◽

The Third ◽

Feedback Mode ◽

Psychophysiological Testing

Purpose: to justify the use of psychophysiological indicators to determine the style of conducting a fight in boxing.Material and methods. The study involved 27 qualified boxers of the middle weight category of 22-25 years. Athletes were tested on psychophysiological indicators. Initially, the determination of the psychophysiological capabilities of athletes was carried out. Then, using a cluster analysis of psychophysiological indicators, the athletes were divided into groups and the features of the styles of conducting a duel between the athletes of each group were analyzed using an expert assessment of their technical and tactical actions. Next, a distinction was made between the psychophysiological indicators of the athletes of the formed groups, i.e. different fighting styles.Results. Cluster analysis of indicators of psychophysiological testing showed the presence of 3 groups of athletes. An expert evaluation of the boxing match styles included in each group showed that the first group included boxers of the counterattack style, “Sluggers”, the second group included athletes of the attacking style, “Swarmers (in-fighter, crowder)”, the third group included athletes of the counterattack and defensive styles, “The out-boxers (out-fighter, boxers)". Boxers - “Sluggers” have higher mobility of nervous processes in comparison with representatives of other styles. Boxers - “pace” are distinguished by significantly higher neurodynamic endurance. “Attackers” - “Swarmer (in-fighter, crowder) ” are distinguished by a higher strength of the nervous system, determined by the number of errors in the test for the speed of a complex reaction in the feedback mode.Conclusions. Psychophysiological and neurodynamic indicators are informative for determining the inclinations of boxers to a particular style of conducting a duel. This provision can be applied at all stages of training athletes to quickly and effectively determine propensities for a particular style of conducting a duel based on innate neurodynamic and psychophysiological characteristics.

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