scholarly journals Modeling T20I cricket bowling effectiveness: A quantile regression approach with Bayesian extension

2021 ◽  
pp. 1-23
Author(s):  
Sulalitha M.B. Bowala ◽  
Ananda B.W. Manage ◽  
Stephen M. Scariano
Keyword(s):  
Statistical Analysis ◽  
Quantile Regression ◽  
Stage 4 ◽  
Regression Approach ◽  
Different Types ◽  
Key Factor ◽  
Cricket Bowling ◽  
The Right ◽  
Stage 1 ◽  
Initial Results

Bowling effectiveness is a key factor in winning cricket matches. The team captain should decide when to use the right bowler at the right moment so that the team can optimize the outcome of the game. In this study, we investigate the effectiveness of different types of bowlers at different stages of the game, based on the conceded percentage of runs from the innings total, for each over. Bowlers are generally categorized into three types: fast bowlers, medium-fast bowlers, and spinners. In this article, the authors divided the twenty over spell of a T20I match into four stages; namely, Stage 1: overs 1-6 (PowerPlay), Stage 2: overs 7-10, Stage 3: overs 11-15, and Stage 4: overs 16-20. To understand the broad spectrum of the behavior of game variables, a Quantile Regression methodology is used for statistical analysis. Following that, a Bayesian approach to Quantile Regression is undertaken, and it confirms the initial results.

scholarly journals Choosing the Right Spatial Weighting Matrix in a Quantile Regression Model

2013 ◽  
Vol 2013 ◽  
pp. 1-16 ◽  
Author(s):  
Philip Kostov
Keyword(s):  
Quantile Regression ◽  
Regression Model ◽  
Rate Of Convergence ◽  
Spatial Dependence ◽  
Spatial Models ◽  
Difficult Problem ◽  
Weighting Matrix ◽  
Quantile Regression Model ◽  
Regression Approach ◽  
The Right

This paper proposes computationally tractable methods for selecting the appropriate spatial weighting matrix in the context of a spatial quantile regression model. This selection is a notoriously difficult problem even in linear spatial models and is even more difficult in a quantile regression setup. The proposal is illustrated by an empirical example and manages to produce tractable models. One important feature of the proposed methodology is that by allowing different degrees and forms of spatial dependence across quantiles it further relaxes the usual quantile restriction attributable to the linear quantile regression. In this way we can obtain a more robust, with regard to potential functional misspecification, model, but nevertheless preserve the parametric rate of convergence and the established inferential apparatus associated with the linear quantile regression approach.

scholarly journals Consumer Perception of Modern and Traditional Forms of Advertising

2020 ◽  
Vol 12 (23) ◽  
pp. 9996
Author(s):  
Marcela Korenkova ◽  
Milan Maros ◽  
Michal Levicky ◽  
Milan Fila
Keyword(s):  
Social Networks ◽  
Marketing Strategy ◽  
Target Group ◽  
Strategy Choice ◽  
Consumer Perception ◽  
Competitive Environment ◽  
Different Types ◽  
Key Factor ◽  
The Right ◽  
A Company

If a company wants to succeed in a tough competitive environment, it must consider all the options to be more visible. One of these possibilities is advertising, which exists in a considerable variety of forms. Therefore, our goal was to conduct a survey on the attitude of customers in Slovakia to several modern and traditional forms of advertising, which are used by companies for their visibility. Data were obtained from the questionnaires filled in by 244 respondents. We were interested in opinions on advertising oversaturation, the influence of advertising, annoyance by advertising, and credibility of advertising. In each of four topics, we investigated opinions on 21 different types of advertising, using non-parametric tests to determine the significance of differences, which means we used inductive statistics. According to respondents, the advertising on social networks has a higher influence than most other types of advertising. At the same time, it is not one of the most trusted forms, nor one of the most bothering forms. The right marketing strategy choice concerning time, money, form, and efficiency is a key factor to companies. Therefore, it is important for companies to use the right form or combination of forms of advertising to make themselves known depending on the type of product and its target group. To increase the sustainability of a company in the market, it is important to use the right form or combination of forms of advertising considering the product and the target group.

scholarly journals A comparative study of primary cellulitis and its local complications in lower limbs in diabetics and non-diabetics through the new Amit Jain’s staging system from India

2020 ◽  
Vol 7 (6) ◽  
pp. 1962
Author(s):  
Sharada P. B. ◽  
Rohit Krishnappa ◽  
Amit Kumar C. Jain ◽  
Hariprasad Taluru Ramachandra
Keyword(s):  
Statistical Analysis ◽  
Staging System ◽  
Lower Limbs ◽  
Diabetic Patients ◽  
Medical College ◽  
Stage 4 ◽  
Group A ◽  
Group B ◽  
A Prospective Study ◽  
Stage 1

Background: The objective of the study was to validate Amit Jain’s staging system for cellulitis in diabetic and non-diabetic lower limbs and to predict the outcomes associated with cellulitis and surgical procedures done in them.Methods: We conducted a prospective study in department of surgery at Raja Rajeswari Medical College and Hospital Bengaluru, India. The study period was from December 2018 to November 2019. Statistical analysis was done using SPSS 22 and R environment ver.3.2.2.Results: A total of 36 patients were included in this study of which 21 were diabetics and were in placed in group A and 15 were non diabetics and placed in group B. 83.3% of the patients were males. 73.3% of non-diabetics had stage 1 cellulitis and 33.3% of diabetics had stage 1 and 2 each. 47.2% of patients underwent debridement and it was significantly common in diabetics (p=0.037) and also it was common in higher stages of cellulitis (p=0.001). 8.3% had amputation in this series. All the major amputations were done in stage 4 cellulitis (p=0.002).Conclusions: In this validation study, it can be seen that cellulitis is common in both diabetics and non-diabetics but it is severe in diabetic patients. Stage 3 was more common in diabetics compared to non-diabetics. Amit Jain’s staging system of cellulitis is a simple, easy, practical, focal classification that guides therapy and predicts amputation.

scholarly journals The study of functional asymmetry in students and schoolchildren practicing martial arts

2020 ◽  
Vol 24 (3) ◽  
pp. 154-161
Author(s):  
Vyacheslav V. Romanenko ◽  
Olha O. Podrihalo ◽  
Leonid V. Podrigalo ◽  
Sergii S. Iermakov ◽  
Zhanna V. Sotnikova-Meleshkina ◽  
...  
Keyword(s):  
Martial Arts ◽  
Reaction Rate ◽  
Functional Asymmetry ◽  
Left Hand ◽  
Right Hand ◽  
Stage 4 ◽  
The Asymmetry ◽  
The Right ◽  
Stage 1 ◽  
Right And Left Hand

Background and Study Aim. The study of functional asymmetry in students and schoolchildren practicing martial arts using a computer test. Material and Methods. The study involved students and schoolchildren (n = 38) practicing the martial arts (taekwondo, karate). Participants were divided into groups according to the sports’ skill level. The first group included experienced athletes (n = 15, age – 19.00 ± 0.45 years). The second group included beginners (n = 23, age - 9.78 ± 0.65 years). The functional asymmetry was determined using «Reaction SM Dual» software for tablets with iOS. Two visual tests were used. The duration of each test was 100 s. Each test was divided into 5 stages. Each stage lasts 20 s. The first test (simple reaction) – the participant pushes against the circles on the screen with two hands. The second test (differentiated reaction) – the participant pushes against the circles of the same color (out of five possible) on the screen. The following indicators were determined: the number of pushes with the right and left hand (abs); reaction time with the right and left hand (s); duration of pushes with the right and left hand (ms). It was estimated the following indicators: total number of pushes; average reaction time; average duration of pushes. Results are estimated using parametric and nonparametric statistical indicators. Results. The number of pushes in the test, the reaction rate, and the duration of pushes were significantly higher in experienced athletes. It was determined the asymmetry due to the lower duration of pushes with the right hand compared to the left hand in beginners. The asymmetry was not confirmed in experienced athletes. The reaction rate for the left hand significantly increased compared to stage 1 in beginners: at stage 2 (t = -2.41), at stage 3 (t = -2.23), at stage 4 (t = -2.30) and at stage 5 (t = -2.68). This dependency was less expressed for the right hand. It was confirmed the increase of the reaction rate in comparison with stage 1: at stage 3 (t = -2.39), at stage 4 (t = -2.00) and at stage 5 (t = -2.32). The differences in the dynamics of the test were more expressed in experienced athletes. It was determined the decrease in the number of pushes compared to stage 1: stage 2 (t = 2.53), stage 4 (t = 2.89) and stage 5 (t = 2.61). For the right hand, this pattern was more expressed. The decrease in the number of pushes was determined compared with stage 1: stage 2 (t = 2.17), stage 3 (t = 2.07), stage 4 (t = 2.39) and stage 5 (t = 2.94). Experienced athletes have confirmed significant changes in the reaction rate with their left hand compared to stage 1: stage 4 (t = -2.33) and stage 5 (t = -2.06). For the right hand, this pattern was confirmed only for the final stage of the test (t = -2.35). Conclusions. It was confirmed the legitimacy of using a special computer test to study functional asymmetry in students and schoolchildren practicing martial arts. The test division into several stages can significantly increase the information content of the results. The applied battery of indicators provides the necessary information for the analysis of asymmetry. It was determined the best functional condition of experienced athletes compared to beginners. Experienced athletes demonstrate the best ability to mobilize and concentrate on extreme conditions. The dynamics of the test also confirms the asymmetry in athletes with less training experience. Performing a test with a differentiated stimulus confirmed the revealed patterns. The lack of asymmetry in experienced athletes confirms optimal training tactics. The asymmetry in beginners stipulates the correction of training. Used computer test can be recommended for martial arts athletes’ condition monitoring.

The ERP Detection of Mental Arithmetic Strategies

2011 ◽  
Vol 301-303 ◽  
pp. 834-839 ◽  
Author(s):  
Du Hong Peng ◽  
Jian Chen ◽  
Hong Tao Wei
Keyword(s):  
Mental Arithmetic ◽  
Brain Activity ◽  
Event Related Potentials ◽  
Negative Wave ◽  
Brain Areas ◽  
Brain Potentials ◽  
Stage 4 ◽  
Related Potentials ◽  
The Right ◽  
Stage 1

Strategy use is a mental operation which aims directly at its target. In order to investigate brain activity during mental arithmetic strategies using, subtraction answers-discrimination tasks were used through 8 healthy subjects with the Event-related Potentials (ERPs) technique. The results showed: (1) The principal components of ERP were: N1, P1, P2, P300 and N400. (2) At the F3, C3 point, stage 4 induced more negative wave than stage 1; At F4, C4, P3 and P4 point, stage 4 induced more positive wave than stage1. (3) Activation of brain areas mainly included Temporal lobe, Prefrontal cortex and Parietooccipital. (4) With the subjects gradually skilled in using strategies, activated brain region gradually moved from back to front; meanwhile the right side had higher active level than the left of brain. Further exploration need to describe more detailed brain potentials during mental arithmetic strategies using in other conditions.

scholarly journals The signifi cance of global longitudinal strain of left ventricular in the classifi cation of stages of aortic stenosis based on the extravalvular cardiac damage

2021 ◽  
Vol 99 (3) ◽  
pp. 187-191
Author(s):  
M. G. Matveeva ◽  
M. N. Alekhin
Keyword(s):  
Aortic Stenosis ◽  
Longitudinal Strain ◽  
Severe Aortic Stenosis ◽  
Systolic Dysfunction ◽  
Global Longitudinal Strain ◽  
Left Ventricular ◽  
Cardiac Damage ◽  
Stage 4 ◽  
The Right ◽  
Stage 1

Severe aortic stenosis (AS) is characterized not only by degenerative changes in the aortic valve but also by extravalvular cardiac damage. Recently, a new staging classifi cation of AS has been proposed based on the extent of cardiac damage, as well as its modifi ed variants with the addition of a measure of global longitudinal strain of the left ventricular (GLS LV), as an earlier predictor of preclinical LV systolic dysfunction.Aim. To evaluate the signifi cance of GLS LV in the staging classifi cation of AS based on the extent of cardiac damage according to a multidisciplinary hospital.Мaterials and methods. 66 patients with severe AS with available GLS LV by speckle tracking echocardiography were selected and analyzed retrospectively.Results. Patients were categorized according to cardiac damage on ECHO: stage 0 was determined in 2 (3%) patients; stage 1 — 10 (15%), stage 2 — 41 (62%), stage 3 — 13 (20%). The use of staging classifi cation of AS with addition of GLS LV quintiles led to patient reclassifi cation. Thus, stage 4 included patients from stage 2 and stage 3 cardiac damage.Conclusions. In patients with severe AS, the adding the GLS LV to the routine ECHO can help to more accurately determine the stages of AS and make the right decision on the management tactics of such patients.

Alterations in the number of motoneurons containing immunoreactive calcitonin gene-related peptide(CGRP)& choline acetyltransferase(ChAT) in the cervical spinal cord of the wobbler mouse during the development of the motoneuron disease

1995 ◽  
Vol 53 ◽  
pp. 970-971
Author(s):  
L. Vacca-Galloway ◽  
Y.Q. Zhang ◽  
P. Bose ◽  
S.H. Zhang
Keyword(s):  
Spinal Cord ◽  
Early Stage ◽  
Cervical Spinal Cord ◽  
Wild Type Mouse ◽  
Reflex Response ◽  
Mouse Strains ◽  
Behavioral Tests ◽  
Wobbler Mouse ◽  
Stage 4 ◽  
Stage 1

The Wobbler mouse (wr) has been studied as a model for inherited human motoneuron diseases (MNDs). Using behavioral tests for forelimb power, walking, climbing, and the “clasp-like reflex” response, the progress of the MND can be categorized into early (Stage 1, age 21 days) and late (Stage 4, age 3 months) stages. Age-and sex-matched normal phenotype littermates (NFR/wr) were used as controls (Stage 0), as well as mice from two related wild-type mouse strains: NFR/N and a C57BI/6N. Using behavioral tests, we also detected pre-symptomatic Wobblers at postnatal ages 7 and 14 days. The mice were anesthetized and perfusion-fixed for immunocytochemical (ICC) of CGRP and ChAT in the spinal cord (C3 to C5).Using computerized morphomety (Vidas, Zeiss), the numbers of IR-CGRP labelled motoneurons were significantly lower in 14 day old Wobbler specimens compared with the controls (Fig. 1). The same trend was observed at 21 days (Stage 1) and 3 months (Stage 4). The IR-CGRP-containing motoneurons in the Wobbler specimens declined progressively with age.

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