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Your search keyword '"BALLISTICS"' showing total 2 results
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2 results on '"BALLISTICS"'

1. The impact of functional and social value on the price of goods

Author

Koen Schoors, Aaron Bramson, Kevin Hoefman, and Jan Ryckebusch

Subjects
PERCEPTIONS, Social Values, Economics, DEMAND, Economic Models, PREFERENCE, Ballistics, lcsh:Medicine, ART-MARKET, Social Sciences, 050109 social psychology, Control Systems, Social value orientations, Conspicuous consumption, Systems Science, Information asymmetry, Sociology, Econometrics, Psychology, lcsh:Science, Preference (economics), Multidisciplinary, Economic Competition, Physics, 05 social sciences, Linear model, Commerce, Classical Mechanics, CHOICE, Mathematical Economics, Models, Economic, Value (economics), Physical Sciences, Engineering and Technology, Games, Research Article, CONSPICUOUS CONSUMPTION, Computer and Information Sciences, Social Theory, Supply and demand, Business and Economics, 0502 economics and business, Supply and Demand, 0501 psychology and cognitive sciences, HEDONIC PRICES, Asymmetric Information, Product (category theory), Behavior, ECONOMICS, lcsh:R, WINE, Biology and Life Sciences, Control Engineering, Information Economics, Economic Analysis, MODEL, Recreation, lcsh:Q, 050211 marketing, Mathematics
Abstract

According to hedonic pricing theory (HPT) market forces operate on individual characteristics of a good, and the price of a product is the aggregate of the price across those characteristics. The relationship between price and characteristics remains poorly understood because characteristic qualities are hard to quantify, people have varying levels of information about characteristics, and people have heterogeneous preferences over characteristics. By analyzing data from a large, market-driven virtual world we are able to test HPT, while largely avoiding these pitfalls. We find that a linear model with functional characteristics predicts the prices poorly, but a log-linear model performs quite well. Adding social characteristics to this log-linear model improves the predictions substantially. This work strongly supports HPT and demonstrates a "rational" calculus including social value.

Published
2018

2. Short-term adaptations following Complex Training in team-sports: A meta-analysis

Author

Pedro E. Alcaraz, Tomás T. Freitas, Julio Calleja-González, Alejandro Martínez-Rodríguez, Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología, and Análisis de Alimentos y Nutrición

Subjects
Physiology, Ballistics, lcsh:Medicine, medicine.disease_cause, Database and Informatics Methods, Jumping, 0302 clinical medicine, power development, Mathematical and Statistical Techniques, Vertical jump, Medicine and Health Sciences, Human Performance, Plyometrics, Public and Occupational Health, 030212 general & internal medicine, Sprint, Database Searching, lcsh:Science, Multidisciplinary, biology, Physics, Classical Mechanics, Complex Training, Adaptation, Physiological, Sports Science, Complex training, Strength Training, Physical Sciences, Statistics (Mathematics), Research Article, Sports, medicine.medical_specialty, Basketball, Strength training, education, Athletic Performance, Research and Analysis Methods, 03 medical and health sciences, light resistances, maximal power, medicine, Humans, Sports and Exercise Medicine, Statistical Methods, Exercise, vertical jump performance, Short-term adaptations, clinical-trials, Behavior, Athletes, business.industry, Biological Locomotion, lcsh:R, Biology and Life Sciences, Resistance Training, 030229 sport sciences, basketball players, Physical Activity, biology.organism_classification, Nutrición y Bromatología, Meta-analysis, Physical Fitness, Physical therapy, Recreation, lcsh:Q, Team-sports, business, human activities, Mathematics, Meta-Analysis
Abstract

OBJECTIVE: The purpose of this meta-analysis was to study the short-term adaptations on sprint and vertical jump (VJ) performance following Complex Training (CT) in team-sports. CT is a resistance training method aimed at developing both strength and power, which has a direct effect on sprint and VJ. It consists on alternating heavy resistance training exercises with plyometric/power ones, set for set, on the same workout. METHODS: A search of electronic databases up to July 2016 (PubMed-MEDLINE, SPORTDiscus, Web of Knowledge) was conducted. Inclusion criteria: 1) at least one CT intervention group; 2) training protocols ≥4-wks; 3) sample of team-sport players; 4) sprint or VJ as an outcome variable. Effect sizes (ES) of each intervention were calculated and subgroup analyses were performed. RESULTS: A total of 9 studies (13 CT groups) met the inclusion criteria. Medium effect sizes (ES) (ES = 0.73) were obtained for pre-post improvements in sprint, and small (ES = 0.41) in VJ, following CT. Experimental-groups presented better post-intervention sprint (ES = 1.01) and VJ (ES = 0.63) performance than control-groups. SPRINT: large ESs were exhibited in younger athletes (12 total sessions (ES = 0.74). VJ: Large ESs in programs with >12 total sessions (ES = 0.81). Medium ESs obtained for under-Division I individuals (ES = 0.56); protocols with intracomplex rest intervals ≥2 min (ES = 0.55); conditioning activities with intensities ≤85% 1RM (ES = 0.64); basketball/volleyball players (ES = 0.55). Small ESs were found for younger athletes (ES = 0.42); interventions ≥6 weeks (ES = 0.45). CONCLUSIONS: CT interventions have positive medium effects on sprint performance and small effects on VJ in team-sport athletes. This training method is a suitable option to include in the season planning. Actividad Física y Deporte

Published
2017

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