• Journal of Information Science Theory and Practice
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• 제3권1호
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• pp.50-65
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• 2015

Recently US/EU governments are utilizing nanotechnology as a key catalyst to support national innovation policies with economic recovery goals. US/EU nano policies have been serving as a global model to various countries, including Korea. So the authors initially seek to understand US/EU national innovation policy interconnections, and then find the role of nanotechnology development within. To strengthen national policy coherence, nanotechnology development strategies are under evolution as an innovation catalyst for promoting commercialization. To strategically support nano commercialization, EHS (Environmental, Health, Safety) and informatics are invested as priority fields to strengthen social acceptance and sustainability of nano enabled products. The current study explores US/EU national innovation policies including nano commercialization, EHS, and Informatics. Then obtained results are utilized to analyze weaknesses of Korean innovation systems of connecting creative economy and nanotechnology development policies. Then ongoing improvements are summarized focusing on EHS and informatics, which are currently prominent issues in international nanotechnology development.

• The Journal of Asian Finance, Economics and Business
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• 제8권11호
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• pp.21-29
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• 2021

The objective of this study is to see how a country's level of democracy impacts the relationship between financial development and income disparity. We argue that political regimes, supported by their degree of democracy, are important for various decentralization theories to predict the impact of financial development on income inequality. Our study tests this argument using Vietnam time series data for the period 2000-2020 through the ARDL model. The financial development variable is represented by five proxies, the income inequality variable is represented by the GINI coefficient and the role of democracy is represented by the Freedom House Index. Data serving for the study is taken from data sources with high reliability. The results of the study have strong evidence that (1) financial development has a positive impact on income inequality, (2) democratic government will reduce national income inequality. (3) And a higher degree of democracy tends to mitigate the positive impact of financial development on income inequality. Thus, our study contributes to the literature by providing a new look at the mixed results regarding the relationship between financial development and theoretical income inequality. Finally, the article provides policy implications for the Government of Vietnam.

• 소성∙가공
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• 제32권6호
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• pp.321-328
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• 2023

To ensure driver safety, high-strength steel pipes are utilized in the chassis and internal structures design of automobiles. ERW(electric resistance welding) pipes, fabricated through welding at joints using electrical resistance, form a Heat-Affected Zone (HAZ) during the welding process. Due to characteristics such as increased hardness and reduced ductility compared to the base material, HAZ poses challenges in finite element analysis (FEA) for pipe shapes. In this study, for FEA considering HAZ properties, mechanical properties were measured through uniaxial tensile testing and digital image correlation (DIC) techniques after specimen fabrication. These measurements were validated using reverse engineering methods. Furthermore, hardness measurements and gaussian functions were employed to ascertain the hardness distribution within the HAZ, serving as a basis for subdividing the HAZ and modeling the pipe shape. To validate the effectiveness of the HAZ modeling approach, models were interpreted incorporating only base material properties and models incorporating average-calculated HAZ properties. Comparative analysis was performed, revealing that the model subdividing the HAZ based on hardness measurements closely approximated experimental values. This validation offered a methodology for HAZ modeling in FEA.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.474-479
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• 2011

With Beijing's success in bidding for the 2008 Olympic Games, the increasing demand for infrastructure development and reduced public sector funding capacity has created a significant funding gap which calls for alternative project delivery methods such as Public-Private Partnership (PPP). Although the exploration of infrastructure projects using PPP model have been practiced since the late 80s, the $560 million National Stadium which served as the main venue for the Olympic Games is the first stadium project in China to be delivered under PPP operation. The project is generally considered successful despite the concession transfer in 2009 with concern of better serving the public interest. Compared to other infrastructure projects such as transportation, waste management and water management, the development of major sports facilities for mega-sports events with PPP has its own unique features and is subject to different major risks. This research identifies and analyzes critical risks in the implementation of PPP in major sports facility development through case study of the National Stadium project. A questionnaire survey and several interviews are conducted to solicit expert opinions from experienced practitioners. The purpose is to provide additional insights in risk management strategies and opportunities in China's PPP implementations in major sports facilities for policy makers and private sectors involved with investment decisions in future similar infrastructure development.

• Structural Engineering and Mechanics
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• 제89권1호
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• pp.61-75
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• 2024

Strengthening of hollow structural sections using through-bolts is a cost-effective and straightforward approach. It's a versatile method that can be applied during both design and service phases, serving as a non-disruptive and budget-friendly retrofitting solution. Existing research on axially loaded hollow sections T-joints has demonstrated that this technique can amplify the joint strength by 50%, where single bolt could enhance the strength of the joint by 35%. However, there's a gap in understanding their use for K-joints. As the behavior of K-joints is more complex, and they are widely existent in structures, this study aims to bridge that gap by conducting comprehensive parametric study using finite element analysis. Numerical investigation was conducted to evaluate the effect of through bolts on K-joints focusing on using single through bolt to achieve most of the strengthening effect. A full-scale parametric model was developed to investigate the effect of various geometric parameters of the joint. This study concluded the existence of optimal bolt location to achieve the highest strength gain for the joint. Moreover, a rigorous statistical analysis was conducted on the data to propose design equations to predict optimal bolt location and the corresponding strength gain implementing the verified by finite element models.

• Asian Journal of Business Environment
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• 제14권2호
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• pp.31-40
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• 2024

Purpose: This study aims to explore the factors affecting the willingness to pay for chicken delivery services targeting college students. The results of this study provide insights for improving food delivery market services and developing effective marketing strategies. Research design, data and methodology: A survey employing a questionnaire was administered to students at Chungbuk National University over a 10-day period from May 15 to May 24, 2023. Out of 232 distributed surveys, 218 were considered suitable for analysis. Binomial logistic regression analysis was conducted with the willingness to pay for delivery fees contingent on chicken price, serving as the dependent variable. Results: The main findings are following. First, as the price of chicken increases, the percentage of individuals willing to pay more than 2,000 won for delivery services decreases. Second, regardless of chicken price, males exhibit a lower tendency to bear higher delivery service fees compared to females. Lastly, those who lack awareness of their recent delivery fees or have previously paid charges exceeding 3,000 won demonstrate a greater propensity to pay higher delivery service fees compared to those who have paid fees below 3,000 won. Conclusions: It is essential for chicken sellers to identify key customer segments such as single-person households, and offer pricing and services tailored to their needs and preferences.

• 드라이브 ㆍ 컨트롤
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• 제21권3호
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• pp.36-45
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• 2024

Collaborative robots, designed for direct interaction with humans have limited adaptability to environmental changes. This study addresses this limitation by implementing a barista robot system using AI technology. To overcome limitations of traditional collaborative robots, a model that applies a real-time object detection algorithm to a 6-degree-of-freedom robot arm to recognize and control the position of random cups is proposed. A coffee ordering application is developed, allowing users to place orders through the app, which the robot arm then automatically prepares. The system is connected to ROS via TCP/IP socket communication, performing various tasks through state transitions and gripper control. Experimental results confirmed that the barista robot could autonomously handle processes of ordering, preparing, and serving coffee.

• 한국식품영양과학회지
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• 제33권2호
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• pp.365-372
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• 2004

본 연구는 공동관리 급식을 시행하는 초등학교의 안전한 급식을 위하여 HACCP 시스템 적용 지침을 개발하고자 경북 경산지역에 위치한 W와 D초등학교의 급식메뉴를 선정하여 2002년 12월∼2003년 2월에 실시하였다. 급식 메뉴에서 학생들의 편식을 교정하데 도움이 되며, 미생물에 의한 오염 가능성이 높은 냉동 해산물을 사용하는 오징어덮밥을 HACCP 적용메뉴로 결정하였다. 오징어 덮밥의 생산 단계에 따라 공정흐름도를 작성하여 생산단계에서 반드시 점검해야 할 HACCP을 적용 지침를 제시하였다 (1) 해동 및 세정: 냉동 오징어는 흐르는 수도물로 해동하여 손질한 후 조리직전까지 식품의 내부온도는 가능한 1$0^{\circ}C$ 이하로 유지 또는 냉장보관하고, 소요시 간은 30분을 초과하지 않도록 한다. 채소는 3구 세정대에서 세정하고, 지하수 사용은 배제해야 하며 작업은 20분 이내에 완료되도록 한다. (2) 썰기: 오징어와 채소를 사용하는 칼과 도마는 구별하여 사용하며, 조리원의 개인위생을 점검하고, 칼과 도마를 포함한 조리기구의 사용 전 후의 세정 및 소독상태를 확인한다. (3)조리: 오징어와 채소는 각각 조리(데치기와 볶기)한 후 함께 섞어 끓인다. 오징어는 완전히 익혀야 하며, 완성된 음식의 내부온도는 94$^{\circ}C$ 이상이어야 하며, 21분 이상 가열한다. 맛보기 는 올바른 방법으로 실시해야 한다. (4) 배식: 조리원의 위생습관(마스크, 머리수건 및 일회용 장갑착용)을 확인하고, 음식 (오징어덮밥)의 내부온도(84.4$^{\circ}C$이상)와 조리실의 이상적 실내온도(15∼18$^{\circ}C$), 조리기구 취급이 위생적으로 이루어지는지 확인한다. 공동관리교의 안전한 급식은 표준화된 메뉴에 따라 공정 흐름도를 작성해야 하며, HACCP이 적용된 지침서가 모든 메뉴에 따라 갖추어 져야 비로소 실행될 수 있다. 따라서 정확한 온도를 측정하고 HACCP을 이해할 수 있는 교육프로그램과 다양한 종류의 식단을 생산할 수 있는 기본적인 시설과 기구를 갖춘 조리실, 전문 영양사와 고용 조리원 확보 및 안전한 식수공급이 이루어 져야 하며 이를 뒷받침하는 국가차원의 지원과 지속적인 연구가 필요하다고 사료된다.

• 한국식생활문화학회지
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• 제34권6호
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• pp.707-718
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• 2019

This study assessed the nutrient consumption of children from lunch at day care centers and kindergartens. A total of 184 lunch plates were selected in two child day care centers and two kindergartens in Seoul. Weights of the menus in planned meals were measured and amount of served and consumed lunches were calculated using a digital photography technique. Nutrients of the planned, served, and consumed lunches were assessed using CAN-Pro 4.0 and the Index of Nutritional Quality (INQ) was calculated for each meal. Compared with the estimated energy requirement for lunch for 3-5 year old children, the planned meals of the child day care centers and kindergartens contributed 42.8% and 98.8% of the daily energy requirements, respectively. At a child day care center, a served meal provided more nutrients than a planned meal since some children requested more servings after eating the served meals. This showed that the planned meal did not meet children's needs as well as the nutrient requirements. At the other child care center, children were served less than the planned meal by 6.8%, which resulted in serving less energy, calcium, potassium, and vitamin C than the required nutrients for lunch. Kindergarten A served meals with the energy requirement for lunch of 101.8%, but Kindergarten B served a meal with the energy requirement of 83.5%. Since the served portions were too small to meet nutrient requirements of the children, they consumed almost all the food served, and their nutrient consumption was similar to the nutrients served. Even though they consumed all the food served, their nutrient consumption did not meet their nutritional requirements. When assessed by INQ, the quality of the meal was good; children could consume enough nutrients when served proper quantity. Teachers who are responsible for serving meals need to be educated on proper portion sizes and how to encourage children to practice healthy eating. To promote healthy eating among children, parents need to provide children with messages consistent with what they have learned at institutions and to be a good role model in daily dietary life.

• 한국철학논집
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• 제37호
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• pp.97-134
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• 2013

향리인 제천에서 태어난 김이만은 18세기 초 중반을 활동기로 삼은 남인계 관인 유자였다. 선대의 세거지가 경북 예천이었던 김이만은 이 지역 망족의 후손답게 어릴 적부터 주위의 기대를 받으면서 성장하였다. 8살 때부터 시를 지었던 김이만은 중년 이후로 주력한 문학 활동으로, 무려 만여 편에 달하는 작품을 남긴 시인이기도 했다. 부친 김해일 사후에 모친으로부터 직접 글공부를 겸한 훈도를 받았던 김이만은 차후로 장형인 김형만의 지도로 학업을 전수받으면서 본격적인 수학기로 접어든다. 특히 "논어" 공부에 전념했던 장형의 학적 지향은 김이만의 학문세계에 큰 영향력을 파급하게 된다. 이후 김이만은 주로 남인계 인사들과 교유하면서 문학 활동과 과거공부를 병행했다. 고향과 서울을 오가면서 공부에 전념했던 김이만은 더러 인근한 사찰에서 독서를 하기도 하였다. 22세 때에 김이만은 오상렴과 함께 송파 이서우의 문하에 접어들었는데, 송파는 사승관계를 확인시켜 준 유일한 인물이다. 고학 지향적인 학문을 추구했던 이서우와의 만남은 김이만의 학문세계가 형성되는 과정에서 중요한 변인으로 작용하게 된다. 20세 무렵에 경서의 대의에 통달했던 김이만은 31세에 사마시에 합격하였고, 또한 익월에 대과에 급제하여 긴 사환기로 접어들게 되었다. 주로 한직과 외직을 전전했던 김이만의 환력은, 당시 정치적 주도권을 상실한 남인의 곤폐한 처지를 반영해 주기도 한다. 그러나 김이만은 신하된 자의 의리에 철저하려 하였고, 특히 그는 현감 군수 등과 같은 외직을 수행하면서 투철한 위민의식을 발휘하였다. 이는 김이만의 학문세계가 제도적 실천의 장으로까지 연장된 장면으로 평가된다. 실제 김이만은 "소학"을 매우 중시하는 가운데, 명문(銘文) 잠언(箴言) 등과 같은 실천 지침을 강구하는 방식을 통해서 도덕적 프락시스의 문제를 진지하게 고심하였던 인물이다. 한편 김이만이 추구했던 학문세계의 기저에는 퇴계학이 굳건하게 정위하고 있었던바, 권두경이 편집한 "퇴도선생언행유편"의 자문에 임했던 학고의 진지한 자세는 이를 잘 대변해 준다. 또한 뒤늦게 착수한 주자학에 대한 연찬은 김이만으로 하여금 천리(天理)[공(公)]에 대한 자각을 더욱 심화시켰고, 또한 공부론의 묘미를 보다 확장시키는 계기로도 작용하였다.