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허상현,하재호 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10
The purpose of this study is to survey and analyze the growth, management and surrounding environment of the big and old trees in Kyoungju-si or the cultural assets alive in our history, and thereby, provide for some data useful to their reasonable protection and use of their surrounding areas. As a result of surveying the growth conditions of the big and old trees, it was found that the height of new grass was 10.5cm on average, the activity scale of the wood was 7.2kΩ, the soil hardness was 16.7kg/㎠, the soil acidity was pH 4.8, and the soil moisture was 13.3%. Such findings suggest that the soil has been acidified by people's frequent passages, but that the other growth conditions are more or less normal. Hence, it is desirable to secure a sufficient space around the trees or reduce people's stamping pressure with some mechanisms. On the other hand, the visible conditions of the trees were found more or less normal, but many trees remained cut or barked (with some cavities), requiring an optimal treatment or measure. Lastly, as the population has decreased in the suburban traditional villages, the surrounding environment seems to be less vulnerable to people's frequent visits. Nevertheless, in consideration of the fact that there are only a few public space for the villagers, it is deemed necessary to rearrange or maintain some parts of the surrounding environment as public space for villagers or hikers.
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허상현 한국조경학회 2001 韓國造景學會誌 Vol.29 No.3
The purpose of this research is to provide for some useful data for computer-related courses of the landscape science, assuming that computers are being and should be used more and more in landscape architecture and therefore, that landscape science students need to respond positively to such a trend. For this purpose, landscape architecture studios and their landscape architects were surveyed for their computer and its program uses as well as their satisfaction with the utility of computer for their landscape works. The results of this research are as follows; 1) 10.7% of the landscape architects surveyed answered that they had learned about their necessary softwares at school, while 61.6% of the studios surveyed were less satisfied with their employees' poor computing ability. Such findings suggest a lack of computer-related courses in landscape science and therefore, that more computer-related courses should be introduced for landscape science students together with the necessary software education. 2) Too few landscape softwares are being used by the landscape architecture studios; such softwares as AutoCAD, Photoshop, 3D Max, Excel, PowerPoint and 한글 account for more than 90% of the landscape architecture softwares being used currently. Quite naturally, landscape students need to be trained on these softwares above all. 3) It was found hat he area of work using the computer most was ˝design works˝(84.5%), followed by ˝documentation˝(83.8%), ˝image editing˝(75.1%), ˝cost calculation˝(68.2%), ˝presentation˝(68.1%), ˝analysis˝(37.8%) and ˝rendering˝(35%). It was regretable to discover that such areas requiring more computing work as ˝analysis˝ and ˝rendering˝ were still worked manually. So it sis deemed necessary for landscape science courses to enhance their computer education of such areas first of all.
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Research on the Use Behaviors and Satisfaction of Gyeongju Namsan, a Historic National Park
허상현 한국전통조경학회 2008 한국전통조경학회지 Vol.6 No.-
This research is a research on the use behaviors and satisfaction of Gyeongju Namsan, a historic national park, and the research results are as follows; 1. Most of the visit purposes of the general use behaviors are fraternity promotion(24.5%), health promotion(22.9%), and rest and stress reduction(20.9%) and the like, and the special finality is judged to be weak, and the enjoyment of nature stood at 14.6% being relatively low as compared to other national parks, the inquiry of cultural assets also was low as 6.7%. So, it is required to develop an inquiry route to be able to fill the want of people who make a visit to Namsan. 2. I think that it is necessary to enable the visitors to visit it with the information about the lots of cultural assets that Namsan has, by promoting the fact that Namsan is the only historic national park because it indicated that many people still have not known the fact that Namsan is a national park according as the visitors knowing that Namsan is a national park stood at 64.8%. 3. Though the average of the visitors' overall satisfaction was a little higher than normality as 3.31, the revisit intention was rated very high according as standing as 4.32. So, I think that it is necessary to make an effort to give the visitors satisfaction. When examining the satisfaction of 8 conceptual variables, the accessibility was highest as 3.59, and commercial and accommodation facilities were lowest as 2.96. So, it is required to enable the users to use Namsan, staying at it after getting out of the short-term uses(2-4 hours) that the users have had so far by linking the traditional experience learning using traditional Korean-style houses with the cultural assets inquiry using Namsan after building the traditional Korean house-shaped houses at a pertinent location. 4. According to the results shown in the satisfaction by the details, the parking lots and the fees were lowest as 2.82, which is necessary to secure more parking spaces in case of weekends according as most users (59.1%) use their own private cars. It is required to improve and expand these things first because the others, the safety facilities of walking routes(3.13), the resting places(3.15) while walking, the superintendent's office, formation facilities(3.17) were low.
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허상현,심경구 한국조경학회 2001 韓國造景學會誌 Vol.29 No.2
The purpose of this study is to computerize street tree management using a CAD program in order to manage the drawing record of street trees systematically and concurrently. The configuration of this program is composed of Reference Data, Data Inquiry, and Cost Assessment. The Reference Data includes characteristics of trees, monthly managements records, damage by blight and insects and usage of pesticides. The Data Inquiry includes an individual search of the tree index, simple searches and multiple searches. The Cost Assessment includes two main components, the data input with labor cost, manure ocst and pesticide cost and the assesment of management cost for prevention of blight and insects, pruning and fertilization. The results of this study are as follows: 1) When there are practices such as transplanting and removing of street trees it is immediately updated with the various situation. By creating an in progress a tree management system, up to the date information can be given to the manager for decision making. 2) To identify individual tree at the site or in drawing, the street name and numbers were used instead of coordinates. Tree tags are attached to the street trees individually. It can make DB management simple and easy. 3) By doing simple or multiple search with constructed DB, data can be provided quickly. 4) The result of this type of search are useful in the assessment of management cost very useful in regards to items such as the pruning, pesticides scattering and fertilization. 5) By using the AutoCAD software and existing PC without purchasing new equipment, the cost of system implementation can be minimized.
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연구논문 : 경주국립공원 남산 지구의 탐방로 훼손 유형 및 환경피해도 평가
허상현 ( Sang Hyun Heo ),유주한 ( Ju Han You ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.11
This study was carried out to systematically maintain and manage the trails by assessing the physical characteristics, the types of deterioration and impact rating class of trails located in Mt. Nam District of the Gyeongju National Park. The major trails followed 6 routes including Sambulsa-Geumobong(A), Yongjangsaji-Geumobong(B), Yongjanggol-Yiyoungjae- Gowibong(C), Cheonusa-Gowibong(D), Sangseojang-Forest road(E) and Tongiljeon-Forest road(F). The routes length of A was 2.2 km, 2.7 km of B, 3.4 km of C, 1.3 km of D, 2.0 km of E and 1.0 km of F. In the physical characteristics, A was the widest and F was the narrowest in the width and bared width of trail. In depth of erosion, B was the deepest and E was the shallowest. D was the steepest and E was the gentlest in the slope. In the results of analysing the types of deterioration, A were 13 types, 11 types of B, C and D, 10 types of E and 6 types of F. The times of appearance of deterioration types in A were 86 times, 75 times of B, 105 times of C, 48 times of D, 47 times of E and 13 times of F. In case of the impact rating class, trail erosion was Ⅱ degree, Ⅰ degree of trail expansion, root exposure, trail divergence and rock exposure.
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대용량 해상풍력발전기용 쉬링크 디스크 제작 공정 최적화 방법 연구
허상현(S. H. Heo),장희상(H. S. Chang),김남용(N. Y. Kim),이채훈(C. H. Lee),이진모(J. M. Lee) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.10
Domestic free forging corporation was disposed to lean to shipbuilding industry, but have started to take part in wind turbine market since 2003, and exported product of blade, main shaft, tower, shrink disc, gear box, coupling and etc. Shrink disc is fundamental device for connecting rotor shaft and gear box in wind turbine system. But shrink disk isn"t localization, so depend on import. In this study optimization of production process for shrink disc for large scale offshore wind turbine system through hot formability evaluation and heat treatment analysis. And then, manufactured shrink disc prototype by applying optimized process and tested mechanical properties and microstructure for shrink disc prototype.
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