• Geomechanics and Engineering
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• 제27권6호
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• pp.605-614
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• 2021

Water inrush from fault is one of the most severe hazards during tunnel excavation. However, the traditional evaluation methods are deficient in both quantitative evaluation and uncertainty handling. In this paper, a comprehensive methodology method combined intuitionistic fuzzy AHP with a Bayesian network for the risk assessment of water inrush from fault in the subsea tunnel was proposed. Through the intuitionistic fuzzy analytic hierarchy process to replace the traditional expert scoring method to determine the prior probability of the node in the Bayesian network. After the field data is normalized, it is classified according to the data range. Then, using obtained results into the Bayesian network, conduct a risk assessment with field data which have processed of water inrush disaster on the tunnel. Simultaneously, a sensitivity analysis technique was utilized to investigate each factor's contribution rate to determine the most critical factor affecting tunnel water inrush risk. Taking Qingdao Kiaochow Bay Tunnel as an example, by predictive analysis of fifteen fault zones, thirteen of them are consistent with the actual situation which shows that the IFAHP-Bayesian Network method is feasible and applicable. Through sensitivity analysis, it is shown that the Fissure development and Apparent resistivity are more critical comparing than other factor especially the Permeability coefficient and Fault dip. The method can provide planners and engineers with adequate decision-making support, which is vital to prevent and control tunnel water inrush.

• 한국산림과학회지
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• 제103권4호
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• pp.646-654
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• 2014

본 연구에서는 우리나라 산림부문 공적개발원조(Official Development Assistance, ODA) 이해관계자 집단을 대상으로 한국 임업발전에 기여한 분야와 분야별 국제경쟁력에 대한 평가를 통해 우리나라 산림부문 공적개발원조현주소를 파악하고 향후 우선 중점분야에 대한 인식 조사를 통해 한국 산림ODA의 확산 및 발전 방향을 모색하고자 하였다. 이를 위해 일반인과 전문가 248명을 대상으로 설문조사를 실시하였으며 결과분석을 위해 교차분석의 카이검정, 독립표본 t-검정, 일원배치분산분석과 Duncan 사후검정을 실시하여 집단 간 인식차이를 비교하였다. 조사결과 한국 산림 및 임업발전 기여도와 산림ODA 사업 시 국제경쟁력에 대해 조사대상자 전체적으로 '산림보존 및 산림황폐지 복구' 영역을 가장 높게 평가하는 것으로 나타났고, 전문가 집단 중 ODA 전문가 집단은 '산림정책 및 제도 연구 역량강화' 영역의 국제경쟁력을 산림전문가 집단에 비해 높이 평가하는 특징을 보였다. 그리고 한국 산림 ODA 우선 중점분야에 대하여 일반인은 '탄소배출권 관리'와 '산림 종 다양성 보전'을 중요하게 인식하는 것으로 나타나 산림황폐지 복구 등과 같은 기존의 단위사업을 선호하는 전문가 집단과는 큰 인식차이를 보였다. 결론적으로 효과적인 산림ODA 실행을 위해서는 과거 한국의 산림복구녹화경험을 기초로 하고 국제사회에서 새롭게 요구하는 기후변화대응, 생물다양성 보존 등의 신 분야에 대처할 수 있는 산림역량강화 프로그램 개발과 함께 이해집단 간 인식차이를 완화시키기 위한 노력이 우선될 필요가 있다. 이는 향후 북한 산림 복구에도 활용될 수 있을 것이다.

• 한국지역사회생활과학회지
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• 제27권spc호
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• pp.689-702
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• 2016

In this study, it was promoted for the purpose of direction for rural landscape planning and management through the analysis of the factors of change in the rural landscape. In the course of research, through literature review study and field surveys, to derive the 25 factors that influence the change in the rural landscape. Later, 25 factors were evaluated in the impact on landscape by experts. 25 factors of the rural landscape were a comprehensive analysis and the results of literature review study and field surveys about the five villages of research area; Ji-San village, Non-Gae village, etc. Expert evaluation was carried out by the rural landscape, and architecture professionals of various related fields. As a result of the analysis, the flow of rural development policy and the business had a great effect on the physical changes in the rural landscape. Furthermore, additional factors such as population structure and lifestyle have made the change in the complex landscapes. Meaning the study has is to provide information on what need there are considered factors in the rural landscape planning and management. The reason is that, since the rural landscape characteristics are different, in order to develop the more efficient rural landscape plan and management.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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• pp.141-147
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• 2005

Usually, processing whole project or a part of frame work delays due to acceleration, changing orders, management, characters of project. overtime, worker crowding, early occupation in the field of construction. Through a whole project, these factors cause decreasing construction labor-productivity which is the most dependent in business of construction. These kind of decreasing of construction labor-productivity cause many negative effects, just as extension of time, increasing cost in project of construction. Regardless of characters of construction or decreasing labor-productivity, extension of time is a incident which needs acceleration, also it cause a high possibility of claim and dispute. The productivity has just a broad meaning in business of construction. That's why it's difficult to apply in the field of construction. Especially, factors increasing or decreasing labor-productivity is defined by analysis of working as qualitative and outlined evaluation. However, study of the each factor decreasing construction labor-productivity analysis has not researched, because of difficulty of systematic measurement and management. The existed studies about management of productivity are just focused on estimation of productivity, not on evaluation of productivity. It was true that I couldn't examine clearly about the analysis of how much important per each the factor which have influence on labor-productivity because of the characteristic as qualitative that the labor productivity have On this study, i tried to get the factors decreasing of labor- productivity with gathering opinions of panels of expert's studies about the factors decreasing of labor-productivity on project of construction through Delphi method and i evaluated the result factors as quantitatively and subjectively about importance of factors decreasing construction labor-productivity Analysis, using AHP Method by Saaty. Also, using Delphi and AHP method, 1 suggest substantiated method qualitative factors are measured by quantitative criteria.

• Journal of Information Science Theory and Practice
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• 제4권1호
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• pp.21-29
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• 2016

Given the difference in research performance in various scientific fields, this study aims to weight and valuate current indicators used for evaluation of scientific productions (publications), in order to adjust these indicators in comparison to each other and make possible a more precise evaluation of scientific productions. This is a scientometrics study using documentary, evaluative, and survey techniques. The statistical population consisted of 106 top Iranian researchers, scientists, and scientific and research managers. Then their research résumé information was gathered and analyzed based on research questions. In order to compare values, the data gathered from research production performance of the population was weighted using Shannon entropy method. Also, the weights of each scientific production importance according to expert opinions (extracted from other works) was analyzed and after adjustment the final weight of each scientific production was determined. A pairwise matrix was used in order to determine the ratios. According to the results, in the area of engineering sciences, patents (0.142) in the area of science, international articles (0.074) in the area of humanities and social sciences, books (0.174), and in the area of medical sciences, international articles (0.111) had the highest weight compared to other information formats. By dividing the weights for each type of publication, the value of each scientific production compared to other scientific productions in the same field and productions of other fields was calculated. Validation of the results in the studied population resulted in very high credibility for all investigated indicators in all four fields. By using these values and normalized ratios of publication indicators it is possible to achieve precise and adjusted results, making it possible to feasibly use these results in realistic policy making.

• 한국환경복원기술학회지
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• 제23권4호
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• pp.1-11
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• 2020

This study aimed to develop the HSI (Habitat Suitability Index) model of Cypripedium guttatum. and to verify this model by applying to the candidate sites for replacement habitat. The development of HSI and SI (Suitability Index) model was conducted based on the existing literature, field surveys, and expert opinions for information on ecological habitat characteristics. Seven variables were selected as habitat variables including mean maximum temperature in Jul.-Aug., lighting, slope, altitude, effective soil depth, soil texture, and artificial overexploitation (i.e. protected areas). HSI model was developed for C. guttaum based on these variables. This HSI model showed high applicability to selection and evaluation of replacement habitats for C. guttaum. Our findings could provide the basic information on habitat assessment to prevent the extinction of endangered C. guttatum. However, since there is a limitation that the survey data were insufficient, further field surveys should be conducted on several habitat types to improve the accuracy of the HSI model.

• 한국조경학회지
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• 제31권5호
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• pp.31-42
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• 2003

This study looked at worked on remaining landscapes in terms of landscape ecology. It presented some ways to conserve and to activate remaining landscapes with examples of agricultural lands in Hwa-won Gun, Ok-po Myun. The results are as follows: We investigated 20 remaining landscape types and 90 remaining landscapes, and classified them in terms of forest and water zones. To evaluate the investigated remaining landscapes, we produced a grading system using 8 criteria such as vitality, stability, field suitability, type of inner scenery formation, connection, recreation, and culture/tradition. Our evaluation of the vitality found that Grade I had the mast remaining landscapes; Grade II had 28, Grade III had 16, Grade V had four, and Grade IV had none. We evaluated the outer landscape influence using 3 criteria such as divisibility, vitality, and indication. We found from evaluating the type of inner scenery formation that most of the landscapes superior to Grade III were adjacent to water zones and that linear landscapes evaluated as Grade I, and II played an important role in this connection. We evaluated the recreation probability using marks, frequencies, and emergencies of peculiar types. Based on the results, we proposed some ways to conserve and to activate the remaining landscapes classified by grades using the results of the last evaluation. Additionally, we proposed some ways to activate the restoration of the linear axis of the green space function the formation of a buffer green space around matric space, the improvement of the axis of the green space center, and the formation of additional green tracts of land to play the role of stepping stones. We proposed the possibility of improving uniformed farm land structures. This study did not consider the weighting values of the evaluation index. Therefore a more objective study will be needed with an expert-survey in the future.

• 한국환경복원기술학회지
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• 제23권1호
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• pp.63-76
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• 2020

This study was conducted to quantitatively evaluate and analyze the alternative habitats using the HSI(Habitat Suitability Index) model of Lutra lutra in Banbyeoncheon Stream. Six variables were selected as habitat variables for Lutra lutra, including distance from waterfront, land cover within 1km from waterfront, presence of alluvial island, area of inland water and wetland, distance from roads and urbanized arid areas, and distance from aquaculture farm. The SI(Suitability Index) model and HSI model were developed based on the existing literature of Lutra lutra, the results of field surveys and expert opinions, and applied to the alternative habitats to examine the applicability of the HSI model. The results of this study can provide information on habitat evaluation to prevent the extinction of endangered Lutra lutra. In particular, it is highly applicable to the selection and evaluation of alternative habitats for Lutra lutra.

• 한국항만경제학회지
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• 제37권4호
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• pp.103-126
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• 2021

본 연구의 목적을 구체적으로 기술하면 다음과 같다. 첫째, 해상운송분야에서의 디지털 전환이 무엇인 지에 대한 정의를 내리고자 한다. 둘째, 디지털 전환과 관련된 다양한 선행연구를 검토하여 해상운송분야의 디지털 전환에 대한 성공요인을 도출하고자 한다. 마지막으로 도출된 성공요인들에 대한 우선 순위를 도출하기 위하여 AHP 분석 모형을 구축하고 해상운송분야 실무 전문가들을 대상으로 전문가 설문조사를 실시한다. 설문조사 결과를 바탕으로 해상운송분야의 디지털 전환의 성공요인들 중 우선적으로 고려해야 할 요인들이 무엇인지 가이드라인을 제공하고자 한다. 본 연구에서는 해상운송분야 디지털 전환을 위한 성공요인의 우선순위를 도출하기 위하여 4개의 상위 평가항목(전략요인, 조직문화 및 인적요인, 기술요인, 환경요인)과 21개의 하위 평가항목으로 계층구조를 설정하였고 AHP(Analytic Hierarchy Process)기법 중에서 항목들의 가중치를 매기는 상대적 평가방법을 적용하였다. 해상운송분야 관련 대학교수, 연구단체, 해운회사, 컨테이너터미널, 해상운송 관련 IT업체에 종사하는 전문가들을 통해서 수집된 설문지 중에서 정보의 정확도를 높이기 위하여 일관성 비율을 0.1이하인 24부의 설문을 대상으로 AHP 분석을 실시하였다. 분석결과, 해상운송분야 디지털 전환의 성공요인에 대한 제1계층 요인들의 우선순위는 전략요인, 조직문화 및 인적요인, 기술요인, 환경요인 순으로 나타났다. 또한 21개의 세부항목에 대한 우선순위를 살펴보면 새로운 비즈니스 모델 개발, 적극적인 미래 디지털 전략의 조성, 최고디지털 책임자의 리더십 등이 높게 나타났다.

• 농촌계획
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• 제13권3호
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• pp.123-133
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• 2007

The purpose of this study is to develop the landscape resource assessment system(LRAS) to help evaluate the value of landscape resources(Jeju Island's Stonewall fencing farming land) for the introduction of direct payment system of the landscape preservation objectively and to applicate the model in the fields. Delphi survey on Jeju's stonewall experts shows that the order of priority among value evaluation elements on Jeju's stonewall is its harmony with surroundings(34%), the preservation of its original state(34%) and its density and scale(32%). Evaluation system development of landscape resources(Jeju's stonewall fencing filming land) and field observation survey utilizing it consists of the following five steps. Step 1 includes the first Delphi survey on Jeju's stonewall experts to decide its value evaluation elements and their priority. Step 2 is the second Delphi survey on Jeju's stonewall experts to grade pictures of landscape resources(Jeju's stonewall fencing farming land) on the basis of expert-proposed value evaluation standards. Step 3 consists of analysis work using the result of Delphi survey on experts. Step 4 is to select five grade standard pictures according to each of three grading elements of A, B, C belonging to each of the three standards. Then, it is necessary to make panels including five A-grade pictures, five B-grade pictures and five C-grade pictures according to each of the three elements of density, harmony, and original state preservation. Step 5 consists of field observation survey. According to the result of few experts' value evaluation of stonewall fencing farming land with the aid of NRAS developed in this research, the area of Pyeongdae-ri is ranked first, and then the area of Bukcheon-ri, Chocheon-up, the area of Gwakgi-ri, Ewol-up, the area of Shinum-ri, Ewol-up and the area of Yongsu-ri, hankyung-Myun are ranked in the order named. When those areas are graded, A Grade Areas includes the areas of Pyeongdae-ri, the area of Bukcheon-ri, the area of Gwakgi-ri, B Grade Areas consist of the area of Shinum-ri and the area of Yongsu-ri, and the areas of Onpyeong, wimi and youngrak belong to C Grade Area.