• Asian Journal of Turfgrass Science
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• v.25 no.2
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• pp.171-176
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• 2011

Sclerotinia homoeocarpa, the causal agent of dollar spot, is one of the most common pathogens of cool season turfgrasses in South Korea. The vegetative compatibility group (VCG) assay was carried out using nitrate-nonutilizing (nit) mutants recovered from 13 South Korean isolates with various geographical origins. The mutants were divided into four phenotypic classes based on mutation loci associated with nitrogen assimilation: nit1, nit2, nit3, and NitM. The recovered number of nit mutants greatly varied among the isolates, ranging from 0 to 15 mutants. Of the mutants isolated, nit1 and nit2 mutants were most common (80%) while NitM and nit3 were relatively rare. One dominant and four minor VCGs were determined from 18 mutant isolates tested. To study population structures of Korean S. homoeocarpa isolates and increase our understanding of its ecological and epidemiological aspects for dollar spot management on turfgrass, more generated mutants should be tested with more diverse isolate collections.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.7
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• pp.1100-1110
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• 2010

This study investigates the attitude and intention of consumers to use customized golf gloves depending on the Technology Acceptance Model (TAM). TAM consists of perceived ease of use and perceived usefulness. To conduct the quantitative research, we collected data from 182 consumers. SPSS 14.0 was used for statistical analysis. Descriptive statistics, factor analysis, reliability analysis, t-test and path analysis were implemented. The results of this study are as follows. First, the subjects were divided into two groups with one group higher in purchase intention. The difference between the two groups was significant. The higher purchase intention group was higher in the perceived ease of use, perceived usefulness, and positive attitude toward customized golf gloves than the lower purchase intention group. In the lower group, the perceived ease of use and perceived usefulness influenced the intention to use through the attitudes of consumers. On the other hand, in the higher group, the perceived ease of use and perceived usefulness influenced the intention to use directly as well as through the attitude of consumers. Therefore, a different marketing strategy must be designed according to purchase intention in marketing innovative products.

• Journal of the Korean Society of Costume
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• v.57 no.8
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• pp.75-88
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• 2007

Nowadays, geometrical form expressed on costume is recognizing as a part of modeling art, at the same time is working to develop it. Also the geometrical form is affording the coinciding lifestyle and sensitivity of customers keeping their pace. As a result, our study is researching on the geometrical form that is used in the pattern, silhouette, and detail of the costume to show the texture in sense of touch and the effect of optical illusion used in variable designs, in order to present the expansion our capability of infinite development included in the study of costume. Specially, geometrical form included in sports wear is very effective since the geometrical form includes short and simple beauty as well as practical design. Thus, this study is wishing to know if satisfying the practical and psychological urge of present human beings may be applied to the golf wear market, which is a type of sport that geometrical form is sent in the fastest way in domestic market. Also we are urged to know what type of design technique is the geometrical form nowadays used and changed to discriminate the artificial commerce and improve the identity of such unique brand. The source of this thesis is wishing to investigate the specialization and the most effective geometrical shape and preference of each type in domestic golf wear goods that applied geometrical goods in $2002{\sim}2006$ and analyze its way of expression.

• Korean Journal of Applied Biomechanics
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• v.15 no.3
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• pp.31-49
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• 2005

The purpose of this study was to analyze the weight transfer patterns under the different golf swing types which are full swing control swing and putting stroke. Two women golfers participated in this study, one(165cm, 94.3kg)being classified as a low-handicap(LH)player, the other(165cm, 54.5kg) being classified as a high-handicap(HH) player. Both players are right-handed. Two force plates(Kistler, 9286AA) were synchronized with a motion capture system(Qualisys ProReflex MCU240). Anteriorposterior, mediolateral, and vertical forces were used as an indicator of the pattern of swing. Four discrete positions which are address, top of backswing impact, and finish were identified as an event and three phases which are backswing downswing, and follow-through between he events were also identified. The results showed that, at impact, the total force was 1.24BW ring the full swing 1.17BW during the control stroke, 1.00BW during the putting stroke. Depending on the golf swing types, the differences are existed. At impact, the distribution of forces is different with a low-handicap(LH) player and a high-handicap(HH) player. A LH player has 26% in right foot and 74% in left foot during the full swing 49% in right foot and 51% in left foot during the control swing 49% in right foot and 51% in left foot during the putting stroke. A HH, on the other hand, has 74% in right foot and 26% in left foot during the full swing 62% in right foot and 38% in left foot during the control swing 54% in right foot and 46% in left foot during the putting stroke. From address to top of backswing the amount of vertical forces are changed 43:57(right foot: left foot) to 76:24 during the full swing 47:53(right foot: left foot) to 75:25 during the control swing 50:50(right foot: left foot) to 54:46 during the putting stroke. The biggest weight transfer pattern took place in full swing and the control swing is next, and the putting stroke is the final.

• The Plant Pathology Journal
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• v.15 no.2
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• pp.112-118
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• 1999

Eleven species of Pythium were isolated from leaf blight symptoms on creeping bentgrass (Agrostis palustirs Huds.), Kentucky bluegrass (Poa pratenisis L.) and zoysiagrasses (Zoysia japonica Steud., and Z. matrella (L.) Merr.) planted on golf courses in Korea. Mycelial growth on potato carrot agar medium under various temperature conditions indicated that Pythium species obtained in this study could be divided into four groups based on their responses to temperature conditions. P. vanterpoolii was found to favor low temperature conditions with the optimum temperature of $25^{\circ}$, whereas P. aphanidermatum and P. myriotylum favored relatively high temperature conditions with the optimum temperature of $35^{\circ}$. Other species including P. arrhenomanes, P. catenulatum, P. graminicola, P. oligandrum, P. rostratum, P. torulosum, and P. ultimum were the intermediate group with the optimum temperature of 25~$35^{\circ}$. P. periplocum was similar to the intermediate group but the minimum temperature for its mycelial growth was $15^{\circ}$, which was approximately $5^{\circ}$ above that for the intermediate Pythium spp.group. In the pathogenicity tests conducted in the lab using potted plants, P. aphanidermatum, P.a arrhenomanes, P. catenulatum, P. graminicola, P. myriotylum, P. periplocum, P. rostratum, P. torulosum, P. ultimum, and P. vanterpoolii were found to be pathogenic to creeping bentgrass and Kentucky bluegrass. P. aphanidermatum, P. catenulatum, and P. graminicola were frequently isolated from leaf blight symptoms of creeping bentgrass and Kentucky bluegrass in golf courses during the warm and humid periods in July-August. On the other hand, P. vanterpoolii and P. torulosum were frequently isolated during the cool and humid periods in March-May, suggesting both species might be the major causes of leaf blight occurring in the spring time. Zoysiagrass was susceptible to P. arrhenomanes and the heterothallic Pythium sp. (Ht-F), showing stem and crown rot of turf-grasses at poorly drained areas under coool and humid or rainy conditions. P. oligandrum and the heterothallic Pythium sp. (Ht-L) isolated from creeping bentgrass were avirulent to all species of turfgrasses tested in this study.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.6
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• pp.1529-1536
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• 2012

The purpose of this study is the investigation of park golf exercise impact on body composition and sleep. Measuring body composition was using multi-frequency impedance meter (Inbody720) for the Weight,% Body Fat, BMI, WHR. And there was using Oh,jinju(1998) as a measurement tool for sleep. Looking at changes in body composition, In the experimental groups, before the experiment body weight $60.56{\pm}6.25kg$, BMI $25.40{\pm}12.4kg/m^2$, %BodyFat $36.46{\pm}4.67%$, WHR $0.93{\pm}0.17$, after 12weeks, weight $58.3{\pm}7.16kg$, BMI $24.28{\pm}2.32kg/m^2$, %BodyFat $35.1{\pm}3.02%$, WHR $0.92{\pm}0.16$ as a significant decrease(p <.05) have appeared. After conducting an exercise program, experimental sleep score increased from 42.03 to 47.43 (increased 5.37) and control group increased from 42.48 to 43.4(increased 0.94). Between the two groups were statistically significant differences. In this study, performed 12weeks of the park golf exercise has a positive effect on body composition and sleep of the elderly.

• Journal of the Korean Data and Information Science Society
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• v.24 no.6
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• pp.1319-1329
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• 2013

The purpose of this research was to develop and validate the coach-athlete relationship scale suitable to amateur golf players by applying the Rasch rating scale model. As the coach-athlete relationship scale, the Korean form of scale developed by Kim and Park (2008), which was revised based on the evidence on the basis of inspection contents, was used to conduct a survey on 217 amateur golf athletes. And the unidimensionality, which is the basic assumption of the Rasch model, was verified using the WINSTEPS program, and the appropriateness of the item category was established through the step calibration. The goodness of fit of each question was tested through the goodness-of-fit index and the differential item functioning (DIF) was estimated according to the golf career. When the goodness-of-fit index estimated for each question was 1.30 or more it was judged unfit and the significance level in the analysis was all set as.05. The results of the analysis showed that the measures variance explained by the Rasch measurement model was more (33.7%) than 20%, so the unidimensionality assumptions of the 11 questions (..hospitable posture when my coach is teaching) were satisfied. The result of analyzing the item category (7 scale) with step calibration was found to be unfit, but in the result of reanalyzing by rescoring into a 5-point scale, it was found to be fit. Particularly, in the result of estimating the goodness-of-fit using the systematized item category (5 scale), Question 10 (...my best when my coach is teaching) and Question 11 were found to be unfit, and as a result of estimating the differential functioning item according to golf career, Question 11 was found to be unevenly differentiated according to golf career. So the 5-point scale of Question 9 after eliminating the two questions which were unfit and differentiated was validated to be the coach-athlete relationship scale suitable to amateur golf athletes.

• Proceedings of the KAIS Fall Conference
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• 2008.11a
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• pp.481-483
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• 2008

본 연구에서는 골프 클럽피팅이 골프스윙에 크게 영향을 미치는 정확도, 탄도, 백스핀, 거리, 감 등 5가지 중에서 실질적인 분석이 가능한 정확도와 거리 2가지 요소에 대해서만 클럽피팅 경험이 있는 골퍼 30명을 대상으로 설문 자료를 수집하여 실증적인 분석과 검증을 통해 상호 상관관계를 살펴보았다. 검증결과 골프 클럽피팅을 했을 경우에 골프 스윙에 있어서 정확도와 거리는 대부분 유의한 것으로 분석되어지고 또한 신뢰도가 높다는 것을 알 수 있었다. 따라서 클럽피터들의 전문성 향상을 위한 교육과 더불어 클럽피팅과 관련된 과학적이고 체계적인 학문적인 연구가 지속적으로 이루어져야 할 것이다.

• Proceedings of the KIEE Conference
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• 2001.04a
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• pp.109-112
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• 2001

In this paper, the development of the prototype electric vehicle for golf car is described. A brushless dc (BLDC) motor is applied as a prime mover. The BLDC motor is coupled directly to the reduction and differential gear system. The output power of the motor is decided to 2.2Kw at 3000 rpm, which is a general value of the golf car on the market today. The motor is driven by the microprocessor-based 3-phase PWM inverter system. We introduce the performance and functions of the BLDC motor and it's control system.

• The Journal of Korean Physical Therapy
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• v.35 no.6
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• pp.163-166
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• 2023

A 30-year-old male novice golfer was diagnosed with a clay-shoveler's fracture. During golf practice, he experienced persistent posterior neck and upper back pain for a month. Cervical radiographs and computed tomography revealed a series of sequential spinous process fractures from C7 to T3. The patient was prescribed analgesic medication and fitted with a cervical brace alongside extracorporeal shockwave therapy (ESWT) directed explicitly toward the upper back region, subsequently leading to a notable reduction in pain. Therefore, ESWT could be considered an additional method for pain management in patients with clay-shoveler's fractures.