• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.303-303
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• 2017

Japanese agriculture has faced to several threats: aging and decrease of farmer population, global competition, and the risk of climate change as well as harsh and variable weather. On the other hands, the number of large scale farms is increasing, because farm lands have been being aggregated to fewer numbers of farms. Cost cutting, development of efficient ways to manage complicatedly scattered farm lands, maintaining yield and quality under variable weather conditions, are required to adapt to changing environments. Information and communications technology (ICT) would contribute to solve such problems and to create innovative technologies. Thus we have been developing an early warning and decision support system to reduce weather and climate risks for rice, wheat and soybean production in Japan. The concept and prototype of the system will be shown. The system consists of a weather data system (Agro-Meteorological Grid Square Data System, AMGSDS), decision support contents where information is automatically created by crop models and delivers information to users via internet. AMGSDS combines JMA's Automated Meteorological Data Acquisition System (AMeDAS) data, numerical weather forecast data and normal values, for all of Japan with about 1km Grid Square throughout years. Our climate-smart system provides information on the prediction of crop phenology, created with weather forecast data and crop phenology models, as an important function. The system also makes recommendations for crop management, such as nitrogen-topdressing, suitable harvest time, water control, pesticide spray. We are also developing methods to perform risk analysis on weather-related damage to crop production. For example, we have developed an algorism to determine the best transplanting date in rice under a given environment, using the results of multi-year simulation, in order to answer the question "when is the best transplanting date to minimize yield loss, to avoid low temperature damage and to avoid high temperature damage?".

• 마케팅과학연구
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• 제18권2호
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• pp.89-111
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• 2008

디지털 기술의 발전으로 일상생활에 접목시킨 스마트 의류 개발에 관한 연구가 활발히 진행되고 있으나, 실질적으로 착용하게 될 소비자의 인식이나 태도에 관한 연구가 이루어지지 않고 있다. 본 연구에서는 스마트의류의 지각된 혁신속성과 위험지각 차원이 제품 태도와 수용의도에 미치는 영향을 알아보고자 대학생을 대상으로 설문지법을 이용하여 조사하였다. 연구의 결과, 스마트의류의 지각된 혁신속성은 상대적 이점, 가시성, 복잡성의 3가지 요인으로, 지각된 위험은 신체/성과적 위험, 사회심리적 위험, 시간손실 위험, 경제적 위험 4가지 요인으로 추출되었다. 혁신특성 중 상대적 이점, 가시성이, 위험지각 중 사회심리적 위험과 경제적 위험이 제품 태도와 구매의도 예측에 주요한 변인으로 나타났다. 한편 사회심리적, 경제적 위험은 상대적이점과 복잡성을 설명하는데, 신체성과적, 사회심리적, 시간손실 위험은 가시성을 설명하는데 유의한 변인으로 나타났다. 제품 태도는 혁신특성과 구매 의도 사이에서는 부분매개 역할을, 위험지각과 구매의도 사이에서는 완전매개역할을 하는 것으로 나타났다. 본 연구는 스마트의류 구입 시 소비자가 인지하는 혁신특성과 지각된 위험의 유형을 파악함으로써 스마트의류 마케터들이 소비자의 긍정적인 태도 형성을 위한 마케팅 전략 수립 시 활용할 수 있는 기초 정보를 제시하였다.

• 산업경영시스템학회지
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• 제39권3호
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• pp.170-179
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• 2016

In this paper we have tackled the outstanding inventory planning problems over new product launching period in a more holistic manner by addressing first the definition of efficient business rules to effectively control and reduce the inventory risks followed by the rigorous explanations on the implementation guide on suggested inventory planning rules. It is not unusual for many companies in the consumer electronics market to make a great effort to reduce the time to launch a new product because the ability to bring out higher performing products in such a short time period greatly increases the probability for them to remain competitive in the high tech market. Among so many newly developed products, those products with new features and technologies appeal to many potential customers while products which fail to win customers by design and prices rapidly disappear in the market. To adapt to this business environment, those companies have been trying to find the answer to minimize the inventory of old products so they can move to next generation products quickly with less obsolete material. In the experimental implementation of our rule-based inventory planning, Company 'S' reduced the inventory cost for the outgoing products as low as 49% of its peak level of its preceding product version in just 5 month after the adoption of rule-based inventory planning process and system. This paper concluded the subject with a suggestion that the best performance of rule-based inventory planning is guaranteed not from one-time campaign of process improvement along with system development but the decision maker's continuing support and attention even without seeing any upcoming business crisis.

• Asian Pacific Journal of Cancer Prevention
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• 제16권4호
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• pp.1415-1420
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• 2015

Background: We compared the health-promoting behavior of long-term cancer survivors with those of the general population to identify necessary behavioral interventions to reduce the health risk among cancer patients. Materials and Methods: We used data from the 2007 and 2012 Korea National Health and Nutrition Examination Surveys (KNHANES IV [2007~2009] and KNHANES V [2010~2012]) on smoking status, alcohol use, physical exercise, and disease screening. We compared long-term cancer survivors with members of the general population; the controls were matched by propensity score matching. A multiple logistic regression model was used to investigate the association between cancer status and health-promoting behavior. Results: Long-term cancer survivors had a lower risk of smoking than the general population controls (OR: 0.42, 95%CI: 0.25-0.71). In addition, the long-term cancer survivors had a lower risk of alcohol use than the general population controls (OR: 0.70, 95%CI: 0.50-0.98). However, in terms of physical exercise and disease screening, no statistically significant differences were detected (physical exercise OR: 1.01, 95%CI: 0.75-1.35; disease screening OR: 1.27, 95%CI: 0.93-1.74). All covariates were adjusted. Conclusions: The long-term cancer survivors had a much lower risk of smoking and alcohol use than the general population controls. However, almost no differences in physical exercise and screening for cancer recurrence or secondary disease were detected between the long-term cancer survivors and general population controls. To reduce the health risks and challenges facing long-term cancer survivors, interventions to encourage physical exercise and screening for cancer recurrence and secondary disease should be implemented.

• 플랜트 저널
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• 제9권1호
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• pp.50-57
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• 2013

본 연구에서는 개발도상국 민자발전사업의 개발단계에서 발생할 수 있는 리스크를 사업소재국, 사업주 및 시장으로 분류하여 해당 항목별 주요 리스크를 조사하고, 근래 한전 및 발전회사가 수행한 대표적인 3개 사업에 적용하여 구체적인 경감방안을 도출하고자 하였다. 개발도상국에서 민자발전사업 추진 시 전력구매처로서 신용이 부족하여 수출신용기관과 국제개발금융기구의 사업 참여가 어려운 경우, 국가신용이 양호한 주변국으로 전력판매처를 다변화하여 시장 리스크를 경감시키는 동시에 사업소재국 리스크를 경감시켜야 하며 20~30년에 걸쳐 장기간 운영해야 하는 화력발전사업의 경우 운영기간이 경과할수록 열효율도 저하되는 것을 감안하여, 설비운영 경과에 따른 성능저하 영향을 충분히 반영하여 기대수익을 보존하고 우리 기업의 손실을 최소화해야 한다.

• 한국콘텐츠학회논문지
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• 제19권5호
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• pp.194-204
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• 2019

최근 모바일 결제 앱 시장이 점차 확대되고 있으나 보안과 프라이버시에 대한 염려로 인하여 모바일 결제 앱 사용률이 서비스 제공자들의 기대에 미치지 못하고 있다. 본 연구는 모바일 결제 앱을 사용하는 개인의 성향과 결제 앱 자체의 보안 신호가 사용자들의 인지된 개인정보 유출 위험과 보안 위험에 어떠한 영향을 주며, 이러한 요인들이 최종적으로 어떻게 모바일 결제 앱의 신뢰에 영향을 주는지 설문을 통하여 살펴보았다. 그 결과, 프라이버시 염려도는 인지된 개인정보 유출 위험을 증가시키고 모바일 시스템 보안 정도를 감소시키는 반면, 친숙도, 인지된 명성, 보안 마크는 인지된 개인정보 유출 위험을 감소시키고 모바일 시스템 보안 정도를 증가시키는 것으로 나타났다. 마지막으로 인지된 개인정보 유출 위험의 감소와 모바일 시스템 보안의 증가가 모바일 결제 앱의 신뢰도에 긍정적 영향을 미친다는 점을 밝혔다.

• Journal of Gastric Cancer
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• 제21권4호
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• pp.352-367
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• 2021

Purpose: Minimally invasive gastrectomy is a promising surgical method with well-known benefits, including reduced postoperative complications. However, for total gastrectomy of gastric cancers, this approach does not significantly reduce the risk of complications. Therefore, we aimed to evaluate the incidence and risk factors for the severity of complications associated with minimally invasive total gastrectomy for gastric cancer. Materials and Methods: The study included 392 consecutive patients with gastric cancer who underwent either laparoscopic or robotic total gastrectomy between 2011 and 2019. Clinicopathological and operative characteristics were assessed to determine the features related to postoperative complications after minimally invasive total gastrectomy. Binomial and multinomial logistic regression models were used to identify the risk factors for overall complications and mild and severe complications, respectively. Results: Of 103 (26.3%) patients experiencing complications, 66 (16.8%) and 37 (9.4%) developed mild and severe complications, respectively. On multivariate multinomial regression analysis, independent predictors of severe complications included obesity (OR, 2.56; 95% CI, 1.02-6.43; P=0.046), advanced stage (OR, 2.90; 95% CI, 1.13-7.43; P=0.026), and more intraoperative bleeding (OR, 1.04; 95% CI, 1.02-1.06; P=0.001). Operation time was the only independent risk factor for mild complications (OR, 1.06; 95% CI, 1.001-1.13; P=0.047). Conclusions: The risk factors for mild and severe complications were associated with surgery, indicating surgical difficulty. Surgeons should be aware of these potential risks that are related to the severity of complications so as to reduce surgery-related complications after minimally invasive total gastrectomy for gastric cancer.

• 한국재난정보학회 논문집
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• 제19권1호
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• pp.69-75
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• 2023

연구목적: 지속되는 기후변화에 의한 풍수해 등의 발생 빈도와 강도가 증가하고 있어 극한 기상현상이 지역 특성 및 상황에 따라 재난으로 이어지는 위험성이 높아지고 있어 기상 관련 긴급정보를 사용자 및 사용자 환경에 맞추어 신속하게 제공할 필요가 있다. 연구방법: 기상 재난에 의한 피해 위험 지역 거주 주민과 재난 현장에서 재난에 대응하는 방재 관계기관 등 특정 사용자의 요구에 특화된 맞춤형 기상긴급정보를 전달하기 위한 기상긴급정보전달시스템의 1단계 시스템이 개발되고 인공지능을 활용한 긴급성 식별 방안이 연구되었다. 시범연구로 극한 기상에 의한 재난 뉴스기사를 분석하고 심각성을 식별하여 관련된 기상 특보와 연계하는 방안을 제안하고자 하였다. 연구결과: 1단계 기상긴급정보 전달시스템이 개발되었고 보다 광범위한 자료 분석을 통해 유용한 정보를 추가할 수 있는 방안이 제시되었다. 결론: 기상긴급정보의 직접적이며 신속한 제공을 통해 극한기상에 의한 재난 피해를 줄 일 수 있을 것으로 기대된다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.217-218
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• 2021

With the prolonged Covid-19 epidemic, movement restrictions such as social distancing are prolonged, and as people stay indoors for a longer time, interest in indoor air pollution is increasing. Indoor air quality is not easily purified unlike outdoors. Among indoor building materials, paints and flooring contain formaldehyde that causes sick house syndrome and VOCs that contain carcinogenicity and harmfulness. For modern people who spend a lot of time living indoors for more than an hour, the occurrence of these harmful substances can be said to be fatal. In response to these risks, in July 2019, the government reinforced the standards for indoor air quality to protect the public's health by raising the detection standards for fine dust, ultrafine dust, and formaldehyde in indoor multi-use facilities. People use machines such as air purifiers to improve indoor air quality, or make efforts such as periodic ventilation. In order to reduce or support these other ancillary efforts more effectively, to reduce the generation of pollutants in the building itself, or to adsorb or purify pollutants in the air, use carbon black as an admixture to make a cement hardened body, and to grasp basic physical properties and adsorption capacity. And the result is as follows. As a result of the experiment to determine the appropriate amount of carbon black, it was confirmed that the more the amount of carbon black was added, the better it was in the formaldehyde emission test, but the tendency was not clear when measuring the flexural strength, so a further experiment to improve this is needed.

• Journal of Korea Trade
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• 제27권1호
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• pp.1-18
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• 2023

Purpose - Using a sample of Korean multinational corporations, we examine whether the relationship between tax risk and the implied cost of capital discriminates between the environmental, social, and corporate governance (ESG) of highly rated firms. Design/methodology - Firms with high tax risks have an increased uncertainty of future cash flows. Therefore, as the volatility of future cash flow increases, information asymmetry and the required return increases. Highly rated ESG firms can reduce information asymmetry, thereby weakening the positive relationship between tax risk and cost of capital. We employ the standard deviation of the cash effective tax rate as proxy of tax risk. We utilize the ESG rating data of the Korea Corporate Governance Service (KCGS). We use a PEG model, MPEG model, and GM model to measure the implied cost of capital. Findings - We find a positive association between the implied cost of capital and tax risk. The positive relationship between tax risk and the implied cost of capital weakens in highly rated ESG firms. Highly rated ESG firms prefer a stable tax position to invest after-tax cash flows into sustainable management. Therefore, the negative effects of tax risk on cost of capital can be reduced. Originality/value - This study provides empirical evidence that ESG activities can mitigate the negative impact of tax risk on the cost of capital for Korean multinational corporations. In a business environment where ESG activities are more important, the empirical results that ESG activities can reduce the corporate risk of Korean FDI companies are expected to provide implications for the ESG activities of multinational corporations.