• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.662-666
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• 2005

Using data gathered from expert opinion of plant and equipment professionals; this paper presents the key variables that may constitute a maintenance proficient plant operator. The Multivariate Discriminant Analysis (MDA) was applied to generate data and was tested for sensitivity analysis. Results showed that the MDA model was able to classify plant operators' proficiency at 94.10 percent accuracy and determined nine (9) key variables of a maintenance proficient plant operator. The key variables included: i) number of years of experience as equipment operator (PQ1); ii) eye-hand coordination (PQ9); iii) eye-hand-foot coordination (PQ10); iv) planning skills (TE16); v) pay/wage (MQ1); vi) work satisfaction (MQ4); vii) operator responsibilities as defined by management (MF1); viii) clear management policies (MF4); and ix) management pay scheme (MF5). The classification procedure of nine variables formed the general model with the equation viz: OMP (general) = 0.516PQ1 + 0.309PQ9 + 0.557PQ10 + 0.831TE16 + 0.8MQ1 + 0.0216MQ4 + 0.136MF1 + 0.28MF4 + 0.332MF5 - 4.387

• Journal of Forest and Environmental Science
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• 제40권2호
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• pp.151-165
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• 2024

Recently, as the number of landscaping plant nurseries have increased, environmental problems such as topographical damage due to indiscriminate changes in land use, increased non-point pollution, and increased impervious areas are also occurring. In this study, we propose eco-friendly facilities and a detailed maintenance manual that can enhance the eco-friendliness and scenic beauty of landscaping plant nurseries that are increasingly located near cities. By exploring previous reports on eco-friendly facilities and related laws, we cataloged the types of eco-friendly facilities, and by referring to examples of eco-friendly facilities introduced in overseas cases and the environmental functions of agriculture, we cataloged the types of eco-friendly facilities suitable for introduction in plant nurseries. The selected facilities are rain gardens, tree boxes, vegetated filter beds, bio-retention, infiltration trench, infiltration tanks, permeable pavements, and sand filtration systems. The maintenance tasks of eco-friendly facilities were categorized and management plans were proposed, which is expected to be utilized as a basic data to prepare eco-friendly space planning and operation management plans when creating a landscape plant nurseries in the future.

• 한국조경학회지
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• 제45권4호
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• pp.81-91
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• 2017

본 연구는 효과적인 치유정원 계획에 필요한 치유정원 계획요소의 체계를 세우기 위해 선행 연구문헌을 종합 분석하여 치유정원 계획분야와 계획요소를 도출하고, 전문가 설문을 통하여 치유정원 계획요소의 중요도를 평가하였다. 연구결과는 다음과 같다. 첫째, 5개 계획분야와 19개 계획요소를 도출하였으며, 그 내용은 다음과 같다. $\LARGE{\cdot}$ 계획분야: 물리적 환경, 사회적 환경, 인지적 환경, 기능적 환경, 심리적 환경 $\LARGE{\cdot}$ 계획요소: 식물식재, 정원경관, 수경공간, 그늘공간, 작업공간, 레크레이션공간, 커뮤니티공간, 운동공간, 랜드마크요소, 사인시스템, 안전한 시설물과 재료, 재해안전시설, 유니버설디자인, 접근이 쉬운 동선, 경제적 유지관리, 시각적 개방성, 프라이버시 보장, 휴식공간의 다양성, 예술적 요소 둘째, 계획요소의 중요도 순위 분석 결과, 상위요소로 1순위는 식물식재, 2순위는 재해안전시설, 3순위로는 휴식공간의 다양성이 차지하였고, 하위요소로 예술적 요소와 랜드마크 요소가 각각 18위와 19위로 나타났다. 셋째, 계획요소의 중요도 수준을 평가하여 3개의 그룹으로 분류하였으며, 가장 중요한 A그룹은 식물식재, 재해안전시설이 포함되었고, 다음으로 중요한 B그룹은 휴식공간의 다양성, 커뮤니티공간, 수경공간, 유니버설 디자인, 안전한 시설물과 재료, 경제적 유지관리, 접근이 쉬운 동선, 프라이버시 보장, 정원경관, 작업공간, 시각적 개방성이 포함되었으며, 상대적으로 덜 중요한 C그룹은 그늘공간, 운동공간, 레크레이션공간, 사인시스템, 예술적 요소, 랜드마크 요소가 포함되었다. 그룹의 중요도 1순위의 2개 요소는 치유정원 계획 시에 필수적으로 적용되어야할 요소로 판단되며, 2순위의 11개 요소는 중요하게 고려되어야 하는 요소로 해석된다. 또한, 3순위의 6개 요소는 상대적으로 낮은 중요도 수준을 보여 치유정원 계획 시 설계자가 임의적으로 선택할 수 있는 요소로 판단된다.

• 플랜트 저널
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• 제11권2호
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• pp.45-51
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• 2015

손실비용을 고려하여 발전소 효율에 큰 영향을 미치는 복수기의 운전 관리 방안을 연구하였다. 2013년 S발전소의 해수온도는 복수기 압력과 뚜렷한 상관관계를 보였으며, 해수온도가 변화함에 따라 복수기 압력은 설계 압력 38.1 mmHg 보다 -1.7~+20 mmHg의 차이로 운전되었다. 제작사에서 제시한 열소비율 보정곡선을 통해 복수기 압력 1 mmHg 증가시 1,2호기 0.0201%, 3,4호기 0.0155%의 효율 손실과 1,2호기 12,830 원/h, 3,4호기 9,832 원/h의 시간당 손실비용이 발생함을 알 수 있었다. 또한 계절별 대응운전, 설비 노후화, 예방정비 시점에 따른 손실비용의 차이를 확인하고 월별 관리범위를 설정하였다. 이를 통해 운전 관리범위 준수, 손실비용을 고려한 정비 계획 수립으로 최소 2.5억원/년(1호기, 40일 정비)의 관리적 손실을 줄일 수 있을 것으로 판단된다.

• 대한간호학회지
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• 제33권8호
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• pp.1101-1110
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• 2003

Purpose. The purpose of this study was to identify the stage of change of smoking cessation behavior and investigate factors associated with the stage of smoking cessation behavior according to the transtheoretical model. Methods. The participants, 297 smokers & quitters were selected by a stratified random sampling from 127 high school sophomore students in B city. Data were collected from April 6th to 16th, in 2002 using the structured self-report questionnaire. Results. The subjects were distributed in each stage of change of smoking cessation behavior: there were 46 subjects (15.5%) in precontemplation, 73 subjects (24.6%) in contemplation, 67 subjects(22.3%) in preparation, 56 subjects (18.5%) in action, 55 subjects (18.5%) in maintenance. Compared to the precontemplation and contemplation, people in preparation tended to smoke daily more and smoked for a shorter time, and as precontemplation progressed to the maintenance, past 1 year smoking cessation frequency increased and friends smoking decreased. Smoking onset age was the earliest in preparation, and the latest in maintenance. Helping relationships and self relationships are used a lot in precontemplation and also in contemplation. In preparation, self liberation and helping relationships are used a lot, in action, self liberation and helping relationships, and in maintenance, self liberation and environmental reevaluation. At each stage, the score of negative affect situation was the highest, but the one of negative affect situation, positive social situation, habitual strength, weight control decreased as precontemplation progressed to the maintenance. While the score of social pros and coping pros decreased with increasing stage, the one of cons tended to increase. Through stepwise discriminant analysis, it was found that social pros, smoking onset age, delf-libration were the most influencing powers among factors associated with the stages of smoking cessation behavior. Conclusions. This study suggested that, in developing an effective smoking cessation intervention for adolescents, all the stage of a client's cessation had to be assessed prior to applying intervention programs. In addition, the results of this study will become a pillar of smoking cessation program planning and application.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2006년도 추계학술발표대회 논문집
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• pp.426-431
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• 2006

Townhouse takes both private housings' and apartments' strengths as its own and forms a new style of house planning. It is highly convenient in maintenance and complement, also satisfying the residents with its independence and refundability. Currently, metropolitan area in Korea being the ignition of the townhouse planning, the gradual housing site development in metropolitan area is laying a foundation for further developments throughout Korea. Through amendment of legislation and qualitative upgrade of habitat, standard about new residence should be readied for activating of townhouse in korea. Therefore This research examines several residence types to secure diversification of residence type and good quality of residence place, introduce the townhouse that developed fast in internal recently and make a planed option for activating in korea.

• 농촌계획
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• 제16권3호
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• pp.11-17
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• 2010

With international attention to the rural landscape, there have been landscape management and conservation efforts. Because it contains characteristics of rural area, rural landscape has been recognized as an important component of rurality. With rural amenity resources survey projects launched since 2005, rural landscape categorization and evaluation such as resource value, use value, beauty, originality, traditionality, maintenance are performed by expert questionnaire survey and 100 rural amenity resources are selected. In this study, we performed fractal analysis for developing evaluation system of the rural landscape photographs. In evaluating processes, main and surrounding landscape are separated and fractal indexes are calculated and analyzed with beauty value scoured by experts. Results show that beauty value is not significantly related with fractal index but differences of main and surrounding landscape fractal index.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1991년도 하계학술대회 논문집
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• pp.333-336
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• 1991

In this paper, Hopfield & Tank model-like artificial neural network structure is proposed, which can be used for the optimal path planning problems such as the unit commitment problems or the maintenance scheduling problems which have been solved by the dynamic programming method or the branch and bound method. To construct the structure of the neural network, an energy function is defined, of which the global minimum means the optimal path of the problem. To avoid falling into one of the local minima during the optimization process, the simulated annealing method is applied via making the slope of the sigmoid transfer functions steeper gradually while the process progresses. As a result, computer(IBM 386-AT 34MHz) simulations can finish the optimal unit commitment problem with 10 power units and 24 hour periods (1 hour factor) in 5 minites. Furthermore, if the full parallel neural network hardware is contructed, the optimization time will be reduced remarkably.

• 한국주거학회논문집
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• 제13권3호
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• pp.71-84
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• 2002

The purpose of this study is to investigate residents'opinions about Habitat Housing. It is also aimed to influence the future directions of Habitat Housing, by understanding the contents of residents'satisfaction and need of houses and surroundings. Direct interview and questionary methods were used for the survey of residents in housing complexes - 24 households in Kwang-yang and 47 households in Asan. SPSS 10.0 program was used for a statistical analysis. Residents are generally satisfied with the surroundings of housing sites, and with the interior spaces of houses. However, dissatisfactions were surveyed of community facilities, site planning, outdoor space, maintenance system, and veranda design of housing units. This result might be helpful to provide planning and design guidelines for the future Habitat Housing.

• 농촌계획
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• 제11권4호
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• pp.25-31
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• 2005

The present study was carried out to investigate the P fractions of surfical sediment of Dongjin sea area. Furthermore, potential released loading of adsorbed and non-apatite inorganic phosphorus were investigated in the sediment of Dongjin sea area. The contents of phosphorus fractions of the surficial sediment in Dongjin sea area were adsorbed-P 0.06%, nonapatite inorganic-P 13.02%, apatite-P 60.22%, and residual-P 26.70%. The most abundant fraction was apatite-P, residual-P, nonapatite inorganic-P, and adsorbed-P followed it. Potential released loading of adsorbed and non-apatite inorganic phosphorus surveyed 2.6 and 597ton respectively. These results show that sediment-managing and interception from external pollution are needed for water environmental maintenance of Dongjin sea area.