• Journal of the Institute of Convergence Signal Processing
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• v.21 no.2
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• pp.92-100
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• 2020

Currently, the demand for underwater or underwater photography is growing very fast. Its coverage of underwater shooting for broadcasting, leisure and sports, and military and operational use is also growing rapidly. Among them, we specifically select the best camera to be used in underwater drones to photograph and inspect marine life attached to the ship's hull. To compare three cameras performance, they are compared and evaluated using objective and subjective criteria in special circumstances such as underwater shooting. This study checks whether performance criteria, such as resolution of a camera, meet objective and subjective standards in the unusual situation of underwater shooting. And it shows that in addition to the filter that calibrates the image, proper camera selection is important for providing good picture quality. Even after this study, research using more diverse cameras could provide an appropriate standard for comparison of underwater camera quality.

• International Journal of Internet, Broadcasting and Communication
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• v.14 no.4
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• pp.163-172
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• 2022

The purpose of this study is to investigate the changes in the number of repetitions and the repetition rate according to the exercise mode when performing 65%1RM resistance exercise at the 1-minute rest interval and the 3-minute rest interval. Sixteen healthy male subjects were treated with Bench press and Biceps curl of 65%1RM intensity at 1 and 3 minute rest intervals. The number of repetitions for each set of 1 minute rest interval showed a significant decrease from 1set to 5set in bench press. biceps curl showed a significant decrease from 1set to 4set. The repetition rate according to the exercise mode with a 1-minute rest interval showed a significant difference from 2sets to 4sets. In the repetition rate for each set, bench press showed a significant decrease from 1set to 5set. biceps curl showed a significant decrease from set 1 to set 4. The number of repetitions according to the exercise mode with a 3-minute rest interval showed a significant difference from 2sets to 5sets. In the number of repetitions for each set, bench press showed a significant decrease from 1set to 5set. biceps curl showed a significant decrease from 1set to 4set. The repetition rate according to the exercise mode with a 3-minute rest interval showed a significant difference from 2sets to 5sets. In the repetition rate for each set, bench press showed a significant decrease from 1 set to 5 sets. biceps curl showed a significant decrease from 1set to 4set. In summary, the decrease in the number of repetitions according to the set progression in the resistance exercise of the endurance depends on the exercise mode, and the increase of the rest interval or the decrease of the weight-intensity should be considered when aiming for more exercise.

• Journal of the Korean Applied Science and Technology
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• v.40 no.4
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• pp.606-615
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• 2023

The purpose of this study was to investigate the effect of increasing weight load on the dynamic balance on Y-balance Test(YBT). 18 male and female adults in their 20-30s (age: 23.17±1.72 years, height: 172.46±9.84 cm, weight: 73.39±11.44 kg, leg length: 88.89±5.69 cm) participated in the experiment. To measure the dynamic balance, the YBT was used to measure the reach distance, composite score, and COP variables to derive the results. As a result of the study, dynamic balance was improved in weight load in posteromedial and posterolateral reach and overall score during YBT. As a result of COP, anteroposterior amplitude, left and right COP velocity, and COP area during anterior reach improved dynamic balance in weight load in the right foot, but there was no difference during the posteromedial reach, ML amplitude in the left foot, AP COP velocity in left foot, ML COP velocity and COP velocity in both foot, and COP area in both foot improved dynamic balance when weight load during posterolateral reach.

• Journal of Industrial Convergence
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• v.22 no.7
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• pp.49-59
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• 2024

This study aims to deeply understand and analyze the meaning of the various conflict experiences experienced by middle school physical education teachers in the physical education field through a phenomenological method and to explore the essence of it from an educational perspective. Regarding the research method, the research participants were four current middle school physical education teachers, and this study was conducted using Colaizzi's phenomenological research method, one of the qualitative research methodologies. The research results are as follows. First, general conflicts were categorized into student guidance and human relationships as conflicts between teachers and students. Second, job conflicts were categorized into teacher culture and communication as conflicts between teachers and teachers. Third, relationship conflicts were categorized into role expectations and power exercise as conflicts between teachers and parents. In conclusion, by analyzing in-depth the aspects of conflict experienced by middle school physical education teachers, it is necessary to effectively resolve various conflicts and, in particular, create a more positive educational environment by minimizing conflicts in the educational field.

• Korean Journal of Health Education and Promotion
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• v.31 no.3
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• pp.109-117
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• 2014

Objectives: Although many cities have adopted Healthy Cities approach in Republic of Korea, few studies have been reported about city health profile. So we report a case of city health profile made of subjective indexes and objective indicators using available recent evidence. Methods: To assess subjective city health indexes, questionnaire survey was implemented to public officers and citizen adapting the 'Signs of progress, signs of caution of 12 stage tool from Ontario Healthy Community Coalition. Based on recent literature objective city health indicators were collected for time-series comparison and for the comparison with those of larger province mainly using Korean Statistical Information Service. Results: Subjective city health indexes were successfully constructed in four areas including human health, environment, social and economic area. The score was especially low in environmental area. Specific items in each area for improvement were identified. Objective city health indicators were collected for three year time-series comparison and for the compared with those of larger province. Conclusions: City health profile comprised of subjective city health indexes and objective city health indicators could successfully be made from primary survey and secondary data in a medium-sized Korean city. That City health profile was useful in subsequent city health planning through participatory process.

• Spatial Information Research
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• v.22 no.2
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• pp.63-71
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• 2014

Ocean leisure sports have recently emerged as one of so-called blue ocean industries. They are sensitive to diverse environmental conditions such as current, temperature, and salinity, which can increase needs of forecasting data as well as in-situ observations for the ocean. In this context, a Web-based geovisualization system for coastal information produced by model forecasts was implemented for use in supporting various ocean activities. First, FVCOM(Finite Volume Coastal Ocean Model) was selected as a forecasting model, and its data was preprocessed by a spatial interpolation and sampling library. The interpolated raster data for water surface elevation, temperature, and salinity were stored in image files, and the vector data for currents including speed and direction were imported into a distributed DBMS(Database Management System). Web services in REST(Representational State Transfer) API(Application Programming Interface) were composed using Spring Framework and integrated with desktop and mobile applications developed on the basis of hybrid structure, which can realize a cross-platform environment for geovisualization.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.345-352
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• 2019

The purpose of this study was to investigate the types and characteristics of collective expression of aggression by sport situation factors in international sport games. For that, each 5 articles on male and female Korean team matches in 2018 Asian games with most replies and their each 100 most recommended replies were collected and analyzed. As the conclusions, first, there were more frequent aggression in critical articles on Korean's losing, and the public sympathy on sport situation effected on collective expression of aggression. Second, the types of collective expression showed almost same frequency as hurling abuses, ability disparagement, and personal attack, and the targets were the main person of the background situation. This study could be valued with the new research perspectives with sport situation factors on the relations among sport and aggression.

• Advances in Traditional Medicine
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• v.7 no.5
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• pp.556-563
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• 2008

Peripheral nerve injuries are a commonly encountered clinical problem and often result in a chronic pain and severe functional deficits. The expression of c-Fos is sometimes used as a marker of increased neuronal activity. We have prepared the aqueous extract of amygdalin from Armeniacae semen for pain control. In the present study, we investigated the effects of amygdalin on the recovery rate of the locomotor function and on the expression of c-Fos in the ventrolateral periaqueductal gray (vlPAG) region following sciatic crushed nerve injury in rats. Walking track analysis for the evaluation of functional recovery and immunohistochemistry for the c-Fos expression were used in this study. In the present results, characteristic gait change with dropping of the sciatic function index (SFI) was observed and c-Fos expression in the vlPAG was suppressed following sciatic crushed nerve injury in rats. Amygdalin enhanced SFI value and restored c-Fos expression in the vlPAG to the control value. The present our study indicated that amygdalin activates neurons in the vlPAG, and it facilitates functional recovery following peripheral nerve injury.

• Journal of Distribution Science
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• v.17 no.3
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• pp.49-55
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• 2019

Purpose - The purpose of this study was to develop a motivation scale for participation sport tourism and to produce implications of potential use of MSPST for sport tourism distribution emphasizing the needs of sport tourists and the functions required to satisfy those needs. Research design, data, and methodology - The Motivation Scale for Participation Sport Tourism (MSPST) was developed in three stages. A literature review generated 8 dimensions with 42-items in the first stage. Second, an expert review phase refined the initial item pool, which resulted in 35 items. Result - Exploratory factor analysis was employed to produce an 8-factor, 28 item pool. The reduced version was confirmed via structural equation modeling, indicating an acceptable model of fit. The final MSPST consisted of 8 dimensions of motivation, including friendship, family, solitude, challenges, intrinsic, achievement, nature, and competition. Conclusions - The MSPST is a valid and reliable scale of tourists' motives for participating in sports. The results supported the suggested measures of motives associated with participation sport tourism regarding construct, convergent and discriminant validity. A body of knowledge about motives provides insights for policy-makers seeking to support distributional industries for sport tourism and finally to promote economy on both regional and national levels.

• Journal of Life Science
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• v.16 no.4
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• pp.584-588
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• 2006

Physical activity has been effective in enhancing quality of life and physical fitness of older adults over relatively short periods of time. However, little is known about the Yoga-based exercise program on physiological changes and physical fitness with psychological variables in elderly women. The purpose of this study is to investigate the effect of Yoga- based exercise program on physiological, psychological factors and physical fitness in elderly women. Forty-four elders were recruited from the public health center. They were divided into exercise training group(n=22) and control group(n=22). The training group participating in 10 weeks of Yoga-based exercise program. Data was analyzed with descriptive statistics, the chi-square test, Fisher's Extract test, and ANCOVA to evaluate body fat, spine ROM, blood pressure, cholesterol, depression, life satisfaction, ADL and physical fitness. There was a significant improvement in blood pressure, total cholesterol, precent of body fat, physiological function, depression, life satisfaction, ADL and physical fitness in the exercise training group than that of the control group. From the results, Yoga-based interventions designed to improve various variables were equally acceptable to elderly women.