• Journal of the Institute of Convergence Signal Processing
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• v.23 no.4
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• pp.200-208
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• 2022

In this study, an automatic information collection system and geographic information construction algorithm for the transportation disadvantaged using electric mobility aids are implemented using an object recognition model. Recognizes objects that the disabled person encounters while moving, and acquires coordinate information. It provides an improved route selection map compared to the existing geographic information for the disabled. Data collection consists of a total of four layers including the HW layer. It collects image information and location information, transmits them to the server, recognizes, and extracts data necessary for geographic information generation through the process of classification. A driving experiment is conducted in an actual barrier-free zone, and during this process, it is confirmed how efficiently the algorithm for collecting actual data and generating geographic information is generated.The geographic information processing performance was confirmed to be 70.92 EA/s in the first round, 70.69 EA/s in the second round, and 70.98 EA/s in the third round, with an average of 70.86 EA/s in three experiments, and it took about 4 seconds to be reflected in the actual geographic information. From the experimental results, it was confirmed that the walking weak using electric mobility aids can drive safely using new geographic information provided faster than now.

• Journal of Life Science
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• v.33 no.4
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• pp.363-370
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• 2023

In order to use Cudrania tricuspidata extract for the development of health-functional food, biological changes in normal rodents, such as changes in blood constituent cells, blood lipids, and anti-inflammatory activity, were measured after the rodents had been drinking the substance for 2 weeks. A 30 mg daily dose of the extract taken for 2 weeks produced no change in body weight or renal function, and no toxicity was observed. Increased red blood cell levels and white blood cell levels were confirmed, and platelet counts tended to increase; thus, the extract seems to cause an overall increase in blood cells. In the case of blood lipids, it was confirmed that the extract-treated group exhibited an effect of improved blood-lipid levels, demonstrated through an increase in HDL-C of 21%, with a decrease in triglyceride of 27% compared to the control group. In addition, the decreases in both GOT and GPT led to improved liver function through use of the extract. Therefore, this study suggests that drinking Cudrania tricuspidata extract can have various effects, such as promoting blood cell production, improving blood lipids profile, improving liver function, and improving inflammatory action. The extract would be useful in the future in developing high-value industrial products such as functional foods and pharmaceuticals.

• Journal of the Korea Convergence Society
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• v.13 no.1
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• pp.201-213
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• 2022

This study attempted to identify the influencing factors of Taobao Online Live Commerce influencer's attributes on Taobao Live Platform users' post-purchase satisfaction, repurchase intention and flow, and addiction. Through previous studies, researchers set the live commerce influencer attributes into four categories: expertise, attractiveness, interactivity, and aesthetics, and examined the effects of these attributes on consumers' repurchase intentions, flow and addiction. As a result of the study, it was confirmed that among the attributes of Live Commerce influencer, professionalism, interactivity, and aesthetics had a significant effect on the utilitarian shopping value in consumer satisfaction, and four attributes, including attractiveness, had a positive effect on the hedonic shopping value. In consumer satisfaction, hedonic shopping value had a positive effect on utilitarian shopping value satisfaction. In addition, it was found that consumers' satisfaction after purchase affects repurchase intention and immersion. The effect of flow on repurchase intention and addiction was also confirmed. It is hoped that this study will help revitalize influencer marketing in the growing live commerce market and provide basic data to contribute to establishing marketing strategies.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.3D
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• pp.425-433
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• 2006

The presented work provided a predictive equation for dynamic modulus of hot mix asphalt, which showed higher reliability and more simplicity. Lots of test result by UTM at laboratory has been used to develop the precise predictive equation. Evaluation of dynamic modulus for 13mm and 19mm surface course and 25mm of base course of hot mix asphalt with granite aggregate and two asphalt binders (AP-3 and AP-5) were carried out. Superpave Level 1 Mix Design with gyrator compactor was adopted to determine the optimum asphalt binder content (OAC) and the measured ranges of OAC were between 5.1% and 5.4% for surface HMA, and around 4.2% for base HMA. The dynamic modulus and phase angle were determined by testing on UTM, with 5 different testing temperature (-10, 5, 20, 40, & $55^{\circ}C$) and 5 different loading frequencies (0.05, 0.1, 1, 10, 25 Hz). Using the measured dynamic modulus and phase angle, the input parameters of Sigmoidal function equation to represent the master curve were determined and these will be adopted in FEM analysis for asphalt pavements. The effect of each parameter for equation has been compared. Due to the limitation of laboratory tests, the reliability of predictive equation for dynamic modulus is around 80%.

• Journal of the Korean Applied Science and Technology
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• v.40 no.5
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• pp.965-976
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• 2023

Reynoutria japonica is a perennate plant belonging to Polygonaceae and grows wild in East Asia containing Korea. Roots of Reynoutria japonica (R. japonica), part of roots of Reynoutria japonica, has been used for anti-inflammation and antispasmodics and contains emodin as active compound. Epidermis of skin is crucial roles to defense our body against stimulants, harmful substance and prevent water loss. In this study, we examined the effect of R. japonica and emodin, its active compound, on skin-barrier and moisturizing on HaCaT cells. First, antioxidant effect of R. japonica was prominent by scavenging ABTS⁺ radicals. Next, we conducted real time PCR and expression of filaggrin mRNA which is crucial role in differentiation of keratinocyte increased by R. japonica and emodin dose-dependently. In addition, R. japonica and emodin significantly elevated the expression of HAS-2 mRNA which play a role in hyaluronic acid synthesis on HaCaT cells. Taken together, R. japonica containing emodin, as active compound has potential as a cosmetic material for enhancing the function of skin-barrier and moisturizing in epidermis.

• Smart Media Journal
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• v.13 no.6
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• pp.80-89
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• 2024

This study aims not only to address environmental issues caused by indiscriminate fashion consumption, specifically in the context of Fast Fashion but also to find an alternative and a sustainable solution that is 'Upcycling' using the 3D clothing simulation program Z-weave. Upcycling products have limitations in that it is difficult to produce samples since finished products must be produced directly with limited materials and resources like waste clothes. To overcome these limitations, a 3D clothing simulation program is introduced to effectively utilize the limited resources of waste clothing. The purpose of this study is to confirm the similarity between a virtual fabric created through Z-weave and a real fabric, through this, to evaluate the possibility of application in the actual fashion industry. As a research method, surveys and interviews were conducted with related majors on virtual clothing created as similar as possible to actual clothing by adjusting the physical properties within the Z-weave program. This study attempted to describe the impact of digital technology on the fashion industry and how 3D clothing simulation programs can be used in sustainable fashion production.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.559-561
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• 1998

인터넷의 급속한 성장과 함께 휴대용 컴퓨터의 보급은 사용자로 하여금 이동 컴퓨팅을 가능케 하고 있다. IETF의 Mobile IP표준은 TCP/IP 망에서의 호스트 이동의 정의한다. 또한 인터넷을 통한 다자간 영상회의나 원격공동작업 등의 멀태캐스트 응용들이 개발되었다. 현재 이동 컴퓨팅과 멀티 캐스팅 전송기술을 접목시키는 연구사 활발히 진행되고 있으며 본 논문에서는 광대역 환경에서 도메인 네임 서버를 이용하여 기존의 이동 멀티캐스트 방법이 가지는 통신지연시간 문제를 해결하는 새로운 서비스 모델을 제시한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.1295-1296
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• 2012

• Electronics and Telecommunications Trends
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• v.27 no.3
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• pp.186-195
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• 2012

전기자동차는 석유 연료와 엔진을 사용하지 않고, 전기 배터리와 전기모터를 사용하는 자동차이다. 그동안 전기자동차는 가솔린 자동차보다 오랜 역사를 갖고 있었으나 배터리 중량, 충전 시간 등의 문제로 인해 실용화되지 못했다. 그러나 최근 들어 경제성과 친환경성을 만족시키면서 GM, 르노 등을 중심으로 전기자동차가 시판되고 있고, 국내에서도 활발히 개발되고 있다. 본고에서는 미국, 일본, 유럽, 중국과 국내의 전기자동차 관련 정책을 살펴보고 정책적 시사점을 도출하고자 한다.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.103-106
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• 1998

일반적으로 교환기에 수용되는 전원장치는 일반 산업용 장비 보다 높은 신뢰성이 요구된다. 특히, ATM 교환기와 같이 회로팩의 고밀집도를 요구하는 시스템에서는 전원장치도 시스템에 부합되는 안정성, 내환경성, 내구성, 고 집적화, 최소화 등의 필수 기술 요건들로 접근되어야 한다. 동시에 ATM 교환기의 수명시간을 보장하기 위한 운용, 유지보수 능력도 만족되어야 한다. 따라서, 본 고에서는 ATM 교환기가 운용중 점검 및 정비가 요구되는 전원장치의 운용유지보수성에 관련된 기술 사항들을 제안한다.