• Asian Journal of Turfgrass Science
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• v.20 no.1
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• pp.11-23
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• 2006

This study was carried out to propose low types of green speed expectation models for fast putting green management by changing mowing height($4.0{\sim}2.5$ mm) and timing of rolling, dew removal and dew removal+rolling. Ball roll distance data were taken from the creeping bentgrass(Agrostis palustris Huds. 'Penncross') practice green of east course at the Lakeside C.C. in October 18, 2001 and May 25, 2002. Data were subjected to multi-regression analysis using Statistical Package for the Social Science. Among four types of green speed expectation models, the best multiple-regression equation for fast green management was as follows; $Y_4=4.171-0.225{\cdot}X_1-0.038{\cdot}X_2$ (where, $Y_4$ : green speed(m) after single dew removal+single rolling, $X_1$ : mowing height($4.0{\sim}2.5,\;X_2$ : passage of time ($0{\sim}8$ h.)). The equation[single dew removal by using sponge roller $\rightarrow$ single mowing at 3.0 mm height or less $\rightarrow$ single rolling] explained to provide fast green over 3.2 m (Stimpmeter readings required for USGA championship play) until the end of first round. Therefore, this cultural practice system was believed to provide fast putting green condition for professional golf tournament

• Proceedings of the Turfgrass Society of Korea Conference
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• 2004.01a
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• pp.40-47
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• 2004

• Asian Journal of Turfgrass Science
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• v.18 no.1
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• pp.37-46
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• 2004

The purpose of this study is to find the suitable putting green maintenance equipment for improving the quality of putting green. This study was carried out to investigate the green speed(i.e., ball roll distance) by different the types of greens mower(between work-behind greens mower and riding greens mower), the types of reel blades(between 9 blades and II blades) and the types of roller(between riding soil sprayer and lightweight roller). Green speed of golf course putting greens is assessed by use of Stimpmeter. The west course of Lakeside Country Club was selected for the case study. The results are summarized as follows; 1. The green speed was faster in 3.8 mm moving height treatment plot using work-behind greens mower than in 3.8 mm moving height treatment plot using riding greens mower right after the moving and even after eight hours had passed, and it was statistically significant at a 95% confidence level. Therefore, work-behind greens mower was judged to be a proper equipment type for the fast green management practice than riding greens mower. 2. The green speed was faster in 3.2 mm mowing height treatment plot using work-behind greens mower equipped with II blades than in 3.2 mm mowing height treatment plot using work-behind greens mower equipped with 9 blades, and this result was statistically significant at a 95% confidence level. Therefore, II-blade was judged to be a proper blade type for the fast green management practice than 9-blade. 3. The difference in green speed (green speed increased after rolling) between a treatment plot mowed at 3.0 mm mowing height with the work-behind greens mower and then rolled a single time with riding soil sprayer and a treatment plot mowed at 3.0 mm mowing height with the work-behind greens mower and then rolled once with lightweight roller was not statistically significant at a 95% confidence level. However, the difference in green speed (green speed decreased after rolling) between two treatment plots measured after eight hours had passed was statistically significant at a 95% confidence level. Therefore, the lightweight roller was judged to be a proper roller type for the fast green management practice than the riding soil sprayer.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2002.10a
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• pp.15-18
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• 2002

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2001.10a
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• pp.121-124
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• 2001

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2003.03a
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• pp.104-107
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• 2003

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.301-303
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• 2003

사용자 쓰레드와 시스템 쓰레드간의 1:1 맵핑 모델은 병렬성을 지원하는 장점이 있고, M: N 맵핑은 병렬성 지원과 빠른 문맥교환의 장점이 있다. 리눅스 자바 가상 머신에서는 1:1 맵핑 모델만을 지원한다. 연성 실시간을 보장하기 위해서는 쓰레드간의 문맥교환을 최소화하여 성능 향상시킬 필요가 있다. 이 논문에서는 자바 어플리케이션 레벨에서 경량 프로세스(Light Weight Process, LWP) 개념을 도입하여 리눅스 자바 가상 머신에서 M: N 맵핑을 지원하는 자바 쓰레드 모델을 제안한다. 제안한 모델은 그린 쓰레드 (Green Thread)의 빠른 문맥교환과 네이티브 쓰레드(Native Thread)의 병렬성 지원 장점을 혼합한 것으로 빠른 처리속도와 자바 플랫폼의 독립성을 그대로 유지할 수 있다. 또한, MTR-LS 알고리즘을 경량 프로세스 스케줄링에 채택함으로서, 자바 응용프로그램의 연성 실시간을 보장한다. 1:l 및 M:1 맵핑 모델과의 성능 비교를 통해 제안한 모델이 좋은 성능과 연성 실시간을 보장한다는 것을 보인다.

• Asian Journal of Turfgrass Science
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• v.25 no.2
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• pp.223-228
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• 2011

This research was performed to investigate change of green speed according to growth of grass, for this, the method of effective green management for improvement of green speed was searched by investigating green density, soil moisture, surface hardness, and mowing height every day for 6 months. As the result of the study, reliability between, green density, soil moisture, surface hardness, mowing height and green speed were measured to be respectively 0.4742, 0.5690, 0.4632, 0.2806, i.e. soil moisture is considered as the factor which affects green speed the most. Therefore, it will be an advantageous environment to maintain soil moisture a little bit low to improve green speed within the range that does not disrupt the growth of green. In case of green density, it is considered to be effective to get a fast green speed when obtaining enough density during May~June, the most vigorous growth period and at the same time green up period. Surface hardness was confirmed that management work as rolling is a considerably effective method to increase hardness. However, rolling gives high stress to the green, combining another management work as regular hilling could be a good alternative. Reliability of green preview and green speed was 0.2806, lower than soil moisture or surface hardness. Through the results, it was confirmed that management of mowing height to be low less than 3.00 mm is helpful to improve green speed, timely, and it is advantageous to manage green speed when adjusting mowing height during the vigorous growth period of bent grass. However, considering the range of mowing height was not various, being 2.9~3.4 mm, henceforth research on investigation of green speed at more various mowing heights would be necessary. Consequently, except mowing height, other three factors, i.e. green density, soil moisture and surface hardness were investigated to have considerable level of reliability on green speed, and it is considered that each factor affects green speed respectively according to green condition and time. Accordingly, in order for the manager to maintain high speed all year round, intensive care for each factor per time unit considering green growth condition is considered to be necessary.

• Journal of Digital Convergence
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• v.14 no.12
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• pp.477-487
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• 2016

The purpose of this current paper was to investigate into the trends and effects of green marketing in India and China with relations to ethnicity and cross cultural aspects. These two countries are fast developing and looks promising in terms of economic power but lack the green marketing consciousness compared to other well developed countries. Many measures are being taken by various industries for the promotion of green awareness in these countries. The two countries are fast developing in the area of green marketing. Green marketing should improve its methods utilizing the cultural differences that is evident from previous research. In the near future, more active green marketing targeting and informing consumers of environmental benefits will be needed by taking ethnicity into consideration for further heightening of overall environmental awareness and initiative.

• Proceedings of the KIPE Conference
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• 2014.11a
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• pp.105-106
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• 2014

본 논문에서는 디젤발전기와 에너지 저장 시스템, 태양광 발전을 이용한 스마트 그린 빌딩의 하이브리드 에너지 시스템을 제안한다. 빌딩 하이브리드 에너지시스템은 다양한 전력원을 가질 수 있는데 기존의 디젤발전기에 화석연료를 저감할 목적으로 풍력발전시스템이나 태양광발전시스템과 같은 형태의 신재생에너지원들이 연계 운전될 수 있다. 연료소모를 최소화하고 디젤발전기의 느린 출력응답특성으로 인한 계통 전압 불안정화를 보상하기 위해 응답특성이 빠른 배터리와 슈퍼커패시터로 이루어진 에너지저장장치와 태양광발전원과의 연계운전 기술을 제안하고 시뮬레이션 하였다.