• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2021년도 학술발표회
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• pp.143-143
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• 2021

Climate change indicators, mainly frequent drought which has happened since the drought of 1994, 1995, and 2012 causing the devastating effect to the agricultural sector, and could be more disruptive given the context of climate change indicators by increasing the temperature and more variable and extreme precipitation. Changes in frequency, duration, and severity of droughts will have enormous impacts on agriculture production and water management. Since both the possibility of drought manifestation and substantial yield losses, we are propositioning an integrated method for evaluating past and future agriculture drought hazards that depend on models' simulations in the Hung-up watershed. to discuss the question of how climate change might influence the impact of extreme agriculture drought by assessing the potential changes in temporal trends of agriculture drought. we will calculate the temporal trends of future drought through drought indices Standardized Precipitation Evapotranspiration Index, Standardized Precipitation Index, and Palmer drought severity index by using observed data of (1991-2020) from Wonju meteorological station and projected climate change scenarios (2021-2100) of the Representative Concentration Pathways models (RCPs). expected results confirmed the frequency of extreme agricultural drought in the future projected to increase under all studied RCPs. at present 100 years drought is anticipated to happen since the result showing under RCP2.6 will occur every 24 years, RCP4.5 every 17 years, and RCPs8.5 every 7 years, and it would be double in the largest warming scenarios. On another side, the result shows unsupportable water management, could cause devastating consequences in both food production and water supply in extreme events. Because significant increases in the drought magnitude and severity like to be initiate at different time scales for each drought indicator. Based on the expected result that the evaluating the impacts of extreme agricultural droughts and recession could be used for the development of proactive drought risk management, policies for future water balance, prioritize sustainable strengthening and mitigation strategies.

• 한국건축시공학회지
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• 제8권5호
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• pp.109-117
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• 2008

Recently, there has been constituted the government regulations and the normative methods to control the safety management activities in construction fields, but almost of these regulations are ineffective, because of some characteristics safety management have. The needs of the times make government regulations and the normative methods change to autonomic management methods. In this context, it is significant certainly to improve the standard of safety management that is used as a tool to protect the workers from the accidents or industrial disasters in the construction field. In this research, it will be showed that the outside regulations and safety management systems of the head office have their limits to reflect the safety managements of field participants. Then, it will be presented the improved model of self-control safety management activities which is essential for success safety management.

• 국토계획
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• 제54권6호
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• pp.27-42
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• 2019

The purpose of this study is to identify the spatial characteristics of the parcels in which building construction occurred. In recent, urban development patterns in Korea have been shifting from the past. Small-scale development at parcel level is becoming more important in accordance with individual location needs in the low-growth era unlike public lead large-scale urban development in the rapid growth period. Therefore, it is necessary to study the spatial characteristics of the parcels where small-scale development takes place for future urban development management. This study used the chi square independence test, t-test and ANOVA (analysis of variance) to identify the spatial characteristics. The results of the study show that there is a spatial characteristics difference not only between building construction and non-building construction parcels, but also by type of building construction. The parcel where the building construction occurred have a higher proportion in detached house, major commercial districts, district unit planning areas, and commercial areas. In addition, it is caused by parcels, which are large scale and economically valuable, and are influenced by traffic factors such as urban centers and subway accessibility. As a result of each type of building construction, the parcels where the building use change occurred have spatial characteristic difference compared to other building construction, while the spatial characteristics are similar between the new construction/extension and new construction/extension with change of use. Based on this results, it will be possible to identify areas with high demand for small-scale development in the future and to utilize them for planning management of urban development. Furthermore, it will be possible to manage development demand by type of building construction, and to prepare differentiated plans considering the appropriateness of development plan, availability of infrastructure, and harmony with surrounding environment.

• 한국콘텐츠학회논문지
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• 제14권12호
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• pp.989-998
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• 2014

본 연구에서는 대학의 에너지 사용 및 온실가스 배출 활동을 체계적으로 관리할 수 있는 온실가스 통합관리 프로그램 개발을 위해 대학 내 시설 담당자들을 대상으로 설문 조사를 실시하였다. 설문 결과에 따르면 실무자들은 기후변화나 온실가스 에너지 목표관리제에 대한 이해도가 높은 편이었으나, 대학의 에너지 사용량 및 그에 따른 온실가스 배출량에 관해서는 상대적으로 이해가 부족한 것으로 나타났다. 설문조사의 내용을 바탕으로 본 연구에서 도출한 온실가스 관리 시스템 개발의 기본 방향 및 고려 요소는 다음과 같다. 온실가스 관리 시스템은 현재의 온실가스 배출량을 정확히 파악하고, 대학의 온실가스 배출 특성을 정확히 파악하며, 사용자의 편의를 도모하는 수단들이 구현될 수 있도록 개발되어져야 한다. 더하여 온실가스 관리 시스템에 대한 적극적인 교육과 홍보가 이루어져야 한다. 본 연구에서 진행한 설문조사의 결과는 효과적인 온실가스 관리 프로그램의 개발 방향을 모색하기 위한 기초자료로서 높은 활용도를 갖는다.

• Membrane and Water Treatment
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• 제10권1호
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• pp.45-55
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• 2019

Climate change has significantly affected the rainfall characteristics which can influence the pollutant build-up and wash-off patterns from the catchment. Therefore, this study explored the influence of varying rainfall characteristics on urban and agricultural runoff pollutant export using statistical approaches. For this purpose, Mann-Kendall and Pettitt's test were applied to detect the trend and breakpoint in rainfall characteristics time series. In addition, double mass curve and correlation analysis were used to drive the relationship between rainfall-runoff and pollutant exports from both catchments. The results indicate a significant decreased in total rainfall and average rainfall intensity, while a significant increased trend for antecedents dry days and total storm duration over the study periods. The breakpoint was determined to be 2013 which shows remarkable trend shifts for total rainfall, average rainfall intensity and antecedents dry days except total duration. Double mass curve exhibited a straight line with significant rainfall-runoff relationship indicates a climate change effect on both sites. Overall, higher pollutant exports were observed at both sites during the baseline period as compared to change periods. In agricultural site, most of the pollutants exhibited significant (p< 0.05) association with total rainfall, average rainfall intensity and total storm duration. In contrast, pollutants from urban site significantly correlated with antecedent dry days and average rainfall intensity. Thus, total rainfall, average rainfall intensity and total duration were the significant factors for the agricultural catchment while, antecedents dry days and average rainfall intensity were key factors in build-up and wash-off from the urban catchment.

• 한국병원경영학회지
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• 제25권1호
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• pp.58-72
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• 2020

Purposes: This study aims to investigate the determinants of change-oriented organizational citizenship behavior(CO-OCB) of hospital employees and test the mediating effect of the job satisfaction and organizational commitment on the CO-OCB. Methods: Data were collected from the self-administered questionnaire survey for hospital employees of ten hospitals located in five regions, including Seoul. Out of 1,100 questionnaires which were distributed through the administrative routes, a total of 617 copies were returned(response rate 56.1%) and analyzed by frequency analysis, t-tests, correlation analysis, multiple regression, and path analysis using SPSS 21.0 and AMOS 21.0. Findings: The study results revealed that the explanatory power(56.4%) of the model was most significantly increased by the variables of psychological attributes(R²-change 33,5%). Also, the variables of self-efficacy, followed by hope, the organizational climate for innovation, the psychological safety climate, team-member exchange, and leader-member exchange were found to have positive total effects on CO-OCB, through the mediating variables of job satisfaction and organizational commitment. Practical Implications: The study results imply that, in order to improve the CO-OCB of hospital employees, the administrators have to take the integrated approach considering the various domains of factors including the psychological attributes, job characteristics, interpersonal relations, and organizational climate simultaneously.

• 한국농림기상학회지
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• 제20권4호
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• pp.305-312
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• 2018

기후변화에 대한 논의가 지속되면서 다양한 영역에서 이와 관련된 연구가 진행되고 있다. 농업은 기후와 가장 밀접하게 관련된 산업으로, 기후변화와 그에 따른 이상기후에 의해 생산성이 크게 달라질 수 있다. 본 연구에서는 기후변화 및 이상기후에 따른 작목별 농산물의 생산성 변화를 살펴보고, 이상기후 종류별 발효횟수가 증가함에 따라 비효율성이 증가하는 작목을 분류하였다. 이상기후를 대리할 수 있는 자료로 기상청에서 발표하는 기상특보의 발효횟수를 활용하였고, 분석에 고려된 기상특보의 종류에는 강풍특보, 호우특보, 대설특보, 건조특보, 한파특보, 태풍특보, 폭염특보가 있다. 8개 과수 작목의 생산 효율성 대해 각 기상특보의 발효횟수가 미치는 영향을 확률적 프런티어 분석을 통해 살펴본 결과 한파특보와 대설특보가 많은 수의 과수작목에 부정적인 영향을 미치는 것으로 나타났다. 농촌진흥청의 농산물 소득조사 자료를 활용한 상기 분석결과는 기후변화와 다양한 이상기후에 대한 국내 농업의 대응전략을 효율적으로 수립하는 데 기초자료로써 활용될 수 있다고 판단된다.

• 전기전자학회논문지
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• 제25권4호
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• pp.689-696
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• 2021

본 논문에서는 고장예측진단 및 건전성 관리 기법(Prognostics and Health Management, PHM)을 적용하기 위해 해당 시스템 혹은 회로 내부에서 결함특성을 감지하고 예측할 수 있는 회로 구조를 제안하였다. 기존 연구에서 회로 결함의 진행에 따라, S-parameter 크기 최소값의 주파수가 변화하는 것을 확인하였다. 이러한 특성을 기존에는 네트워크 분석기(Network Analyzer)를 활용하여 측정하였으나, 본 연구에서는 같은 결함검출기법을 활용하더라도 큰 계측장비 없이 결함의 진행상황 및 잔여 수명, 결함발생 여부를 확인할 수 있는 소형화된 회로를 설계하였다. 본 연구에서는 S-parameter의 변화를 야기하는 임피던스의 변화를 감지할 수 있도록 회로를 설계하였으며, Bond-wire의 온도반복에 따른 S-parameter 변화 측정결과를 제안하는 회로에 적용하였다. 이를 통해 해당 회로가 Bond-wire의 결함을 감지할 수 있다는 것을 성공적으로 검증하였다.

• 경영과학
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• 제15권1호
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• pp.149-178
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• 1998

Strategic Information Systems Planning(SISP) has gained considerable interest among researchers and practitioners in recent years Which has instigated various related research. Neverthless, only 24 percent of the projects recommended as a result of SISP are ultimately performed. This statistics raise the questions for the need of SISP. This study provides the framework that may enable SISP to be more effectively utilized by studying factors for consideration from the review of pertinent literature. These factors will then be validated by case studies of domestic companies and by simultaneously inducing key characteristics and solutions of SISP. The result of the study indicate some inconsistency between literal factors and the case study. The factors added through case study were considered to be actual factors of SISP. This study emphasized the role of the senior manager, the quality of the implementation of the state plan, change management and the capability of the planning team. As a key characteristics of domestic companies considered was the general lack of ability to collect and analyze data. In addition, the domestic companies have little consideration of the organizational contingency factors.

• 한국환경복원기술학회지
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• 제13권5호
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• pp.146-153
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• 2010

Urban development typically results in many species being confined to small, isolated and degraded habitat fragments. Fragment size and isolation underpin many studies of modified landscape to prevent biodiversity loss. However, habitat characteristics such as vegetation structure and edge effects are less frequently incorporated in planning. The relative influence of biogeographic (e.g. size, isolation) and vegetation parameters on assemblages is poorly understood, but critical for conservation management. In this study, the relative importance of biogeographic and vegetation parameters in explaining the diversity of forest-interior dwelling birds in forest fragments in Chungcheong Province Area. Fragment size and vegetation characteristics were consistently important predictors of bird diversity. Forestinterior bird richness was influenced by fragment size (0.437), wood age (0.332), wood diameter (0.068), and patch shape (-0.079). To preserve bird diversity of Chungcheong Province Area, it is important to consider differing responses of bird diversity to landscape change, move beyond a focus primarily on spatial attributes (size, isolation) to recognize that landscape change also has profound effects on habitat composition and quality. The result is very useful for long-term aspect of biodiversity conservation plan in regional scale.