• Korean Journal of Construction Engineering and Management
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• v.20 no.3
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• pp.22-30
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• 2019

The purpose of this study is to derive basic data of the Guaranteed Maximum Price(GMP) process and to present specimens that can be used at the time of execution of CM at Risk project in South Korea. CM at Risk project is issued in South Korea, but the actual data is lack. On the other hand, CM at Risk project is universalized and the market of the CM at Risk is steadily growing. Because of that, in this study, The United States cases was selected as a sample. GMP consists of CM's fee, CM contingency, project direct cost, project indirect cost, allowance. GMP negotiations are performed before the end of design completion, and after 3 rounds of estimation comparison, preliminary GMP is confirmed. GMP can be multiple contract and it is useful for Procurement of long lead materials and early construction. If the actual cost is lower than expected GMP, sharing of the saving is an option since the conflict of interests between the client and the contractor can occur.

• Journal of the Korea Institute of Building Construction
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• v.19 no.2
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• pp.185-192
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• 2019

Construction has been well known as the industry in which accidents occur more often than other industries. The efforts to eliminate the accidents at construction sites need to be continuously conducted because they tend to cause the social problems such as massive loss of life and property. According to the Korea Occupational Safety and Health Agency (KOSHA), 26,570 (29.3 percent) out of 90,656 workers in total industrial accidents have been occurred in the construction industry in 2016. Particularly, the falling victims are the largest number, which is about 8,699. This number is increasing due to the increase of the large scale, high-rise, and complex construction structures and the various construction methods. In reality, there is a lack of analysis on the risk factors of safety accidents and preventive measures. Therefore, in this study, we have selected risk factors by analyzing the accident cases at construction sites. Based on the results, we conducted a safety practitioner-focused survey and had an interview with safety managers. In analyzing the cases, we have categorized them into three groups such as upper, middle, and lower and compared their statistical results. This study are expected to provide safety management guidelines with workers and safety managers to prevent previously fall accidents at construction site.

• Management & Information Systems Review
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• v.37 no.4
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• pp.257-270
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• 2018

Although healing is now developing an interest in extending tourism, there have been few studies in this area. Especially late-night tour is closely related to healing experience, but there are little researches that help us understand healing in late-night tour. This study was conducted to examine the relationships among late-night scapes(light aesthetics, sharing mood, culture uniqueness), healing experience(stress reduce and psychological happiness), attitude toward late-night tour. We collected data involving various late-night tourist, and used 198 respondents to analyze these data using LISREL structural modeling. Light aesthetics and sharing mood had positive effects on stress remove, but Culture uniqueness didn't have a signigicant effect on stress remove, unlikely the prediction. And all late-night shape had positive effects on psychological happiness. Also we tested the effects of the healing experience(stress remove and psychological happiness) on attitude. In the final section, we discussed several limitations of our study and suggested directions for future research. We concluded with a discussion of managerial implications, including the potential to advance understanding late-night tourist and implying an enhanced ability to satisfy target consumers of late-night tour.

• Food Engineering Progress
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• v.21 no.4
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• pp.326-331
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• 2017

A cultivar (Malus domestica cv. Fuji) of apple was selected to make apple peel (AP) powder by three different powdering methods. Frozen AP was thawed and subsequently was dried or ground without drying. After AP was dried by hot-air drying at $60^{\circ}C$ or freeze-drying, the dried AP was ground using a conventional blender. Separately, the thawed AP was powered by using a cryogenic micro grinding technology (CMGT). The ground AP and three types of AP powder were extracted using deionized water, 20, 40, 60, 80, or 100% methanol, followed by vacuum evaporation. The total phenolics contents (TPC), total flavonoids contents (TFC), DPPH, and ABTS radical scavenging capacities of each extract were compared to determine an efficient powdering method. Lyophilized AP powder extract using 60% methanol showed the highest TPC and DPPH radical scavenging capacity. In contrast, 60% methanol extract of the powder by CMGT, resulting in the smallest particle, exhibited the highest TFC and ABTS radical scavenging capacity. This study suggests that the extraction yield of bioactive compounds from AP may be varied according to different powdering methods and that a new powdering process such as CMGT may be applicable to develop functional foods efficiently.

• Journal of Digital Convergence
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• v.19 no.8
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• pp.89-100
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• 2021

The National Cyber Capability Assessment(NCCA) could be used as meaningful information for improving national cyber security policy because it provides information on the elements necessary for strengthening national cyber capabilities and the level of each country. However, there were few studies on improving cyber capabilities using the NCCA result in Korea. Therefore, we analyzed the result of National Cyber Power Index(NCPI) conducted by Belfer Center of Harvard Univ. by applying modified-IPA method to derive cybersecurity policy agendas for Korea. As a result, the need to set agendas on surveillance and offensive cyber capability and improve the effectiveness of policy implementation for intelligence and defense was drawn. Moreover, we suggested need for in-depth study of each policy agenda deduced from preceding research data as a future tasks. And it is expected to increase practical use of NCCA for domestic policy analysis by developing and using our own NCCA model which considered analysis framework proposed in this study.

• Maritime Security
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• v.2 no.1
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• pp.1-42
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• 2021

Controversy continues over the offensive nature of China's naval strategy to become a maritime power. Therefore, the purpose of this study is to identify the characteristics of China's naval strategy to become a maritime power by using the three elements of strategy and predict China's military actions in the future. For this purpose, research was conducted by considering the three elements of strategy and the distinct characteristics of naval strategy, and it was found that China's naval strategy was overall aggressive, but there was an imbalance in the pursuit of aggression between each strategic element. Offensive nature was prominent in terms of the methods, but there were limitations in the goals and means, such as the need to cooperate with neighboring countries to become a maritime power and the lack of military technology and operational continuity. The prospects for China's future military actions derived from the imbalance between these strategic elements are as follows. ① The risk of all-out military conflict with the US is low for now. ② China may use its naval power to force or cause limited military clashes against neighboring countries within the first island chain. ③ Accidental military conflicts with the US and neighboring countries may occur over naval confrontation over territorial disputes.

• Science of Emotion and Sensibility
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• v.24 no.2
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• pp.13-24
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• 2021

In level 5 (mind-off) of autonomous driving, the autonomous vehicle passengers are expected to have various activities such as face-to-face meetings, working, relaxing, and watching movies. In particular, various changes in the interior space of the vehicle are expected. Moreover, according to the survey conducted by the American Automobile Association, 73% of the respondents reported that they were afraid to board autonomous vehicles. In level 5 of autonomous driving, the subject of safety was expected to be transferred to autonomous vehicles; thus, research should be conducted from the user's perspective. Recently, various studies have been conducted to secure the safety of fully autonomous vehicles. However, there are limited studies addressing the psychological safety of actual passengers. Therefore, this study conducted a questionnaire based on the AHP technique. Consequently, the automobile safety system's priority for securing passengers' psychological safety according to each type of indoor behavior was derived, and the interior space for securing the psychological stability of passengers was suggested based on the obtained results. This study offers a new direction for interior space design, satisfying the psychological safety of passengers. This study is important because it advocates that the interior environment of fully autonomous driving cars is expected to be designed to secure the user's psychological safety.

• Knowledge Management Research
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• v.21 no.4
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• pp.129-156
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• 2020

The sharing economy is recognized as a new economic system based on the digital service platform, but the sharing economy has yet to be established in Korea due to a lack of social awareness and understanding. There is a need to enhance understanding and awareness of the sharing economy in positive perspective in order to make up business with advanced economies global and explore new markets. In this study, after collecting papers of the sharing economy over the past decade published by each academic field around the world, we reviewed them from academic lens and conducted a comprehensive analysis using meta analysis methodology. Then, we selected papers of MIS field and analyzed the trends of the MIS field research in these papers. As a result we identified the research trend of the sharing economy and the MIS research and drew the necessity of interdisciplinary research between the two studies by examining importance and relevance of MIS research in the sharing economy research. Therefore, we expect that this study contributes to promote interdisciplinary research with neighboring disciplines and to establish a positive social, economical and industrial position in Korea.

• Economic and Environmental Geology
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• v.53 no.6
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• pp.781-792
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• 2020

Mine tailings, which are inevitably formed by the development of manganese nodules, manganese crusts, and hydrothermal seafloor deposits, have attracted attention because of their quantity and potential toxicity. However, there is a lack of data on the quantity of mine tailings being generated, their physicochemical properties, and their effects as environmental hazards and on marine ecosystems in general. The importance of treating mine tailings in an environmentally friendly manner has been recognized recently and related reduction/treatment methods are being considered. In the case of deep-sea mineral resource development, if mine tailings cannot be treated aboard a ship, the issue becomes one of the cost of transporting them to land and solving the problem of environmental pollution there. Therefore, the Korea Institute of Ocean Science and Technology conducted research on the harmfulness of mine tailings, their effect on marine ecosystem, the diffusion model of contaminated particles, and candidate purification treatment technologies based on five representative controlling factors: 1) effects of pollution /on the environment, 2) effects of environmental/ biological hazards, 3) diffusion of particles, 4) mineral dressings, and 5) reducing/processing mine tailings. The results of this study can provide a basis for minimizing environmental problems by providing scientific evidences of the environmental effects of mine tailings. In addition, it is also expected that these results could be applied to the treatment of pollutants of different origins and at land-based mining waste sites.

• (The)Study of the Eastern Classic
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• no.57
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• pp.201-229
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• 2014

한국에서의 유가(儒家) 경전의 수용은 삼국시대에 시작되었으며, 이는 신라(新羅)시대 태학(太學) 교육 중의 한 과목이 "상서(?書)"였다는 "삼국사기(三國史記)"의 기록을 통해 알 수 있다. "상서(?書)"는 고대 정치제도 및 정치사상과 매우 긴밀한 관련을 갖는 경전인 까닭에 중국뿐만 아니라 한국에서도 통치자들의 시정방침(施政方針)상의 중요한 근간(根幹)이 되었다. 이러한 연유로 "상서(?書)" 연구를 통해서 경서 내용을 알게 될 뿐만 아니라 그 시대의 정치사상도 알 수 이해하게 될 것이다. 그런데 한국에 있어서 경학 연구는 중국과 달리 전통적 사서오경(四書五經) 혹은 십삼경(十三經)이 아니라 "사서삼경(四書三經)"을 중심으로 전개되었다. 또한 개별 경전에 대한 연구를 기준으로 살펴보면, "사서(四書)"의 경우, 특히 "논어(論語)"에 대한 연구가 집중적으로 이루어졌다. 삼경(三經)의 경우, "주역(周易)"이나 "시경(詩經)"은 이미 많은 연구가 이루어졌으나, 한국에서 "상서(?書)" 연구는 아직 전자만큼 활발히 이루어지지 못하고 있다. 또한 성균관대학교에 발간한 "한국경학자료집성(韓國經學資料集成)"을 살펴보면, 한국 경학 저술 총 145권 가운데 "상서(?書)" 부분이 22권을 차지하고 있다. 즉 거의 6분의 1이 "상서(?書)" 관련 저술이라고 할 수 있다. 본고는 "학술총람"과 공구서(工具書) 전자 시스템에 수록된 1901년부터 2014년 상반기에 이르기까지의 100여 년 동안 한국(韓國)에서 발표된 "상서(?書)" 관련 학술단행본 학위논문 학술지논문 등을 검토하고, 이를 통해 한국에서의 "상서(?書)"학(學) 연구(硏究)를 회고(回顧)하고 또 그 미래를 전망(展望)해 보도록 할 것이다. 전적으로 보면 한국 "상서(?書)"학 연구는 3가지를 포함한다. 첫째는 한국에서 중국 고전 "상서(?書)" 원전(原典)에 대한 탐구(探究)인데 이를 '중국 "상서(?書)" 연구' 라고 칭하였다. 둘째는 조선시대 유학자의 서경 저술을 중점 대상으로 연구하는 것으로 이를 '한국 "서경"학 연구'라고 이름 하였다. 셋째는 한국 이외 다른 나라 학자들의 조선시대 "서경" 저술에 대한 연구이다. 이상 3가지를 모두 대상으로 삼아야 온전한 한국 "상서(?書)"학 연구라고 할 수 있을 것이다. 향후의 연구 방향은 다음 네 가지로 정리할 수 있다: (1) 역본의 연구 (2)학파별 연구 (3)문헌적 연구 (4)경연과 과거시험의 각 나라 비교 연구이다. 한국 "서경"학에 대한 연구를 통해 우리는 조선시대의 사상과 문화 특히 정치사상을 파악할 수 있으며 또한 전통시대 동아시아 각국의 학문 양상까지도 인식할 수 있을 것이다. 요컨대, 아직까지 한국의 학계에서 한국 "서경"학을 중심으로 하여 이러한 측면을 밝히는 연구는 부족한 편이라고 할 수 있겠으며, 그렇기에 연구할 영역이 더욱 많은 셈이라고도 할 수 있는 것이다. 바로 이 연구영역들에 더욱 심혈을 기울여 앞으로 더 깊이 있고 폭 넓은 연구가 진행되기를 기대할 수 있게 되는 것이다.