• 센서학회지
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• 제30권6호
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• pp.388-394
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• 2021

The conventional microelectromechanical system (MEMS) process has been used to fabricate sensors with high costs and high-volume productions. Emerging 3D printing can utilize various materials and quickly fabricate a product using low-cost equipment rather than traditional manufacturing processes. 3D printing also can produce the sensor using various materials and design its sensing structure with freely optimized shapes. Hence, 3D printing is expected to be a new technology that can produce sensors on-site and respond to on-demand demand by combining it with open platform technology. Therefore, this paper reviews three standard 3D printing technologies, such as Fused Deposition Modeling (FDM), Direct Ink Writing (DIW), and Digital Light Processing (DLP), which can apply to the sensor fabrication process. The review focuses on strain/load sensors having both sensing material features and structural features as well. NCPC (Nano Carbon Piezoresistive Composite) is also introduced as a promising 3D material due to its favorable sensing characteristics.

• 공업화학
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• 제33권1호
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• pp.103-108
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• 2022

본 연구에서는 아이소소바이드(1,4:3,6-dianhydro-D-glucitol)로부터 그에 상응하는 아이소소바이드-디케톤[2,6-dioxabicyclo(3,3,0)octan-4,8-one]으로의 높은 선택적 전환을 통한 효율적인 루테늄/템포/나이트레이트 촉매 시스템 개발에 대해 보고한다. 미래의 제조 공정에서의 중요한 플랫폼 화합물 중 하나는 아이소소바이드이다. 오랜 시간 동안, TEMPO(2,2,6,6-tetramethylpiperidine-N-oxyl)는 알코올을 카보닐 화합물로 변환하는데 사용되어 왔다. 본 화학 반응에서는 산소 1atm 압력하에, Ru (10 mol%), TEMPO (5 mol%), 질산나트륨(0.03 mmol) 그리고 아이소소바이드(0.5 mmol)를 용매 아세트산(3 ml)을 사용하여 최적화되었다. 이러한 촉매 시스템은 이중 산화 촉매 반응 메커니즘에 대한 가능성뿐만 아니라, 생성물에 대한 원하는 반응물의 높은 선택성(> 97%)과 수율(87%)을 보여주었다.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.85-94
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• 2022

Recently, consumers who prefer contactless consumption are increasing due to pandemic trends such as Corona 19. This is the driving force for developing the last mile-based logistics ecosystem centered on the online e-commerce market. Lastmile led to the continued development of the logistics industry, but increased the amount of cargo in urban area, and caused social problems such as overcrowding of logistics. The courier service in the logistics base area utilizes the process of visiting the delivery site directly because the courier must precede the loading work of the cargo in the truck for the delivery of the ordered product. Currently, it's carried out as automated logistics equipment such as conveyor belt in unloading or classification stage, but the automation system isn't applied, so the work efficiency is decreasing and the intensity of the courier worker's labor is increased. In particular, small-scale courier workers belonging to the sub-terminal unload at night at underdeveloped facilities outside the city center. Therefore, the productivity of the work is lowered and the risk of safety accidents is exposed, so robot-based loading technology is needed. In this paper, we have derived the top-level concept and requirements of robot-based loading system to increase the flexibility of logistics processing and to ensure the safety of courier drivers. We defined algorithms and motion concepts to increase the cargo loading efficiency of logistics sub-terminals through the requirements of end effector technology, which is important among concepts. Finally, the control technique was proposed to determine and position the load for design input development of the automatic conveyor system.

• 운동영양학회지
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• 제25권4호
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• pp.38-44
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• 2021

[Purpose] Exercise can prevent conditions such as atrophy and degenerative brain diseases. However, owing to individual differences in athletic ability, exercise supplements can be used to improve a person's exercise capacity. Schisandra chinensis (SC) is a natural product with various physiologically active effects. In this study, we analyzed SC using a pharmacological network and determined whether it could be used as an exercise supplement. [Methods] The active compounds of SC and target genes were identified using the Traditional Chinese Medicine Database and Analysis Platform (TCMSP). The active compound and target genes were selected based on pharmacokinetic (PK) conditions (oral bioavailability (OB) ≥ 30%, Caco-2 permeability (Caco-2) ≥ -0.4, and drug-likeness (DL) ≥ 0.18). Gene ontology (GO) was analyzed using the Cytoscape software. [Results] Eight active compounds were identified according to the PK conditions. Twenty-one target genes were identified after excluding duplicates in the eight active compounds. The top 10 GOs were analyzed using GO-biological process analysis. GO was subsequently divided into three representative categories: postsynaptic neurotransmitter receptor activity (53.85%), an intracellular steroid hormone receptor signaling pathway (36.46%), and endopeptidase activity (10%). SC is related to immune function. [Conclusion] According to the GO analysis, SC plays a role in immunity and inflammation, promotes liver metabolism, improves fatigue, and regulates the function of steroid receptors. Therefore, we suggest SC as an exercise supplement with nutritional and anti-fatigue benefits.

• 한국의류학회지
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• 제46권5호
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• pp.805-826
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• 2022

This study explored the process by which consumers purchase products from small fashion business owners via online and mobile channels. In addition, group types were classified given that the purchasing process depends on the consumers' life cycle. The consumer focus group interview (FGI) was conducted on 18 participants that were divided into six groups by age, work, and children. Results revealed that first, consumer journey comprised four stages. Factors influencing need recognition were "attention to information of social media influencer," "attention to information of affiliated groups," and "repeated advertising of SME products/brands." For information searching, "exploring purchase reviews," "environment for mobile shopping information exploration," and "continuous product tracking" were important factors. Purchasing and shopping stages were affected by "price-free, improvised purchase decision" and "convenient mobile payment system and point benefits." After the purchase, "active sharing and repeated purchase when satisfied" and "blocking relationships when dissatisfied" occurred. Second, six consumer groups based on the fashion life cycle are the "Platform lover," "Influencer follower," "Trust builder," "Novelty seeker," "Convenience seeker," and "New designer supporter." Ultimately, small business owners can develop the process of planning and selling fashion products more efficiently.

• Journal of East Asia Management
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• 제4권1호
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• pp.53-77
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• 2023

Modern company faces an uncertain future and a competitive environment and are seeking new technologies and creative products to ensure the corporate growth and survival in the market through continuous innovation. "University Industry Cooperation(UIC)" is a point of contact for overcoming the crisis faced by companies and universities in this era and a cooperation platform for mutual prosperity. As a subsidiary of a university, "Technology Holding Company(THC)" is attracting attention as a new window for UIC in Korea. The role of THC is to establish and foster the business opportunities of their subsidiaries and to return investment profits to the university ecosystem again. But recently, the life cycle of technology is getting shorter, and the development cost is steadily increasing. In particular, with the increase of hybrid projects based on convergence and combination, the risk of conducting research(R&D) and new product development(NPD) projects is gradually increasing. A PMO refers to a project management organization that can contribute to improving the success rate of projects with increasing uncertainty by supporting project visibility and appropriate decision-making. The purpose of this study is to raise a research question on whether THC's corporate performance can be improved when "Project Management System(PMO Service)" is introduced into the subsidiary incubation system of THC. This study proposes several research methods to identify the relationship between the introduction of PMO and the corporate performance of THC.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2021년도 학술발표회
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• pp.161-161
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• 2021

본 연구에서는 금강 상류의 용담댐 유역(930.0 km²)을 대상으로 Sentinel-1 SAR(Synthetic Aperture Radar) 및 Sentinel-2 MultiSpectral Instrument(MSI) 위성영상을 활용한 토양수분 산출연구를 수행하였다. 연구에 사용된 자료는 10 m 해상도의 Sentinel-1 IW(Interferometric Wide swath) mode GRD(Ground Range Detected) product의 VV(Vertical transmit-Vertical receive) 및 VH(Vertical transmit-Horizontal receive) 편파자료와 Sentinel-2 Level-2A Bottom of Atmosphere(BOA) reflectance 자료를 2019년에 대해 각 6일 및 5일 간격으로 구축하였다. 위성영상의 Image processing은 SNAP(SentiNel Application Platform)을 활용하여 Sentinel-1 영상의 편파 별(VV, VH) 후방산란계수와 Sentinel-2의 적색(Band-4) 및 근적외(Band-8) 영상을 생성하였다. 토양수분 산출 모형은 다중선형회귀모형(Multiple Linear Regression Model)을 활용하였으며, 각 지점에 해당하는 토양 속성별로 모형을 생성하였다. 모형의 입력자료는 Sentinel-1 위성의 편파별 후방산란계수, Sentinel-1 위성에서 산출된 식생지수 RVI(Radar Vegetation Index)와 Sentinel-2 위성에서 산출된 NDVI(Normalized Difference Vegetation Index)를 활용하여 식생의 영향을 반영하고자 하였다. 모의 된 토양수분을 검증하기 위해 6개 지점의 TDR(Time Domain Reflectometry) 기반 실측 토양수분 자료를 수집하고, 상관계수(Correlation Coefficient, R), 평균제곱근오차(Root Mean Square Error, RMSE) 및 IOA(Index of Agreement)를 활용하여 전체 기간 및 계절별로 나누어 검증할 예정이다.

• 한국컴퓨터정보학회논문지
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• 제28권7호
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• pp.179-187
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• 2023

소비자 신뢰는 공유 경제 발전에 중요한 역할을 한다. 본 연구는 소비자 신뢰에 영향을 미치는 요인을 중점적으로 다루며, 중국의 자전거 공유 산업에서 선두였던 오포(OFO)의 사례를 살펴보았다. 본 논문은 오포의 내부 경영 문제와 거의 파산상태에 이르기까지 소비자 신뢰의 하락을 분석합니다. 2018년 12월부터 오포가 직면한 "환불의 어려움" 문제는 계속해서 커져 왔으며, 본 연구는 이 상황을 배경으로 신뢰/불신에 영향을 주는 영향 요인들을 살펴보았다. 제품 요인(품질), 플랫폼 요인(결제 보안, 개인 정보 보호, 명성), 사회적 요인(사회 규범, 정부 규제)을 독립변수로 고려하여 소비자 신뢰에 영향을 미치는 요인을 분석합니다. 분석 결과, 공유 자전거에 대한 소비자의 불신이 커지면 전환의도가 높아지며, 회사의 평판과 사회적규범은 신뢰와 불신에 모두 영향을 미치고, 정부규제는 신뢰에 영향을 미친다는 것을 확인하였다. 연구 결과는 공유 경제 플랫폼에 시사하는 바가 있으며 향후 연구를 위한 지침을 제공할 수 있을 것으로 기대된다.

• 정보보호학회논문지
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• 제33권1호
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• pp.117-128
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• 2023

전자서명법 전면개정(2020. 12. 10, 시행)으로 시장에는 다양한 인증서가 출시되어 경쟁하고 있다. 치열한 경쟁하에서 대형 IT플랫폼 업체의 인증서 시장 점유율이 높아지고 있으며 결국에는 시장을 독식할 것으로 예측되기도 한다. 이에 소비자의 인증서 선택요인을 파악하고, 선택요인들 간에 중요도 차이는 어떠한지를 파악하는 것은 기업의 인증서 시장에 대한 전략 수립 및 제품 포지션이닝에 필수 요소이며, 정부의 인증서 정책 방향설정에 키포인트라 하겠다. 본 연구에서는 선행 논문 및 설문조사 등의 내역을 기반으로 소비자의 인증서 선택요인을 추출하였고, 추출된 선택요인을 기반으로 델파이조사를 통하여 4가지 선택요인(발급기관의 신뢰성, 프로그램 설치, 인증서 사용방법, 범용성(사용처))을 선별하였다. 선별된 선택요인으로 소비자 설문조사를 실시하여 컨조인트 분석결과, 발급기관의 신뢰성이 가장 중요한 효용가치로 나타났다. 다음 순으로 인증서 사용방법, 프로그램 설치, 범용성(사용처) 순으로 중요도가 나타났다.

• 유통과학연구
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• 제21권10호
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• pp.39-49
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• 2023

Purpose: The purpose of this study is to explore areas that have been studied extensively in previous studies related to franchising as a platform for global distribution. Furthermore, franchising is a strategic distribution method that gives entrepreneurs the opportunity to replicate an established business model. In addition, franchisees benefit from the use of established branding and receive support from the franchisor. Research design, data, and methodology: This study used the Preferred Reporting Items Systematics Review and Meta-Analyses (PRISMA) method to analyse data from 2003 to 2023 in the Web of Science and Scopus databases. Results: A total of 79 articles were identified and analysed to see trends and related themes such as product distribution, business distribution, business strategy, emerging market, and franchising relationship. Also, publication trends by year related to franchises are also presented. Conclusions: Overall, the research trend related to franchising as a global distribution is well seen, and every year, many researchers begin to explore the topic of franchising as a method of distribution that can be explored from various aspects either quantitatively or qualitatively. Lastly, limitations and recommendations are made to provide guidance for future studies related to the topic broadly and deeply in enriching the findings.