• Korean journal of applied entomology
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• v.61 no.4
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• pp.657-658
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• 2022

This study was conducted to identify methods to improve the emergence rate of Aphidius spp. in agricultural fields. The emergence rates of Aphidius colemani released into agricultural fields were 37.2%, 54.4% under 'sun blind' conditions, and 63.1% in the group in which shade and moisture were provided. Provision of shade and moisture upon introduction of Aphidius spp., can increase adult emergence 1.69 times more relative to a control group.

• The Journal of Korea Robotics Society
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• v.18 no.1
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• pp.10-17
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• 2023

Recently, robots have been actively utilized for logistics and delivery services in various places such as restaurants, hotels, and hospitals. In addition, it provides a safer environment, convenience, and cost efficiency to the customers. However, when it comes to autonomous delivery in a multi-floor environment, the task is still challenging. Especially for wheeled mobile robots, it is necessary to deal with elevators to perform the last-mile delivery services. Therefore, we present a multi-floor route planning algorithm that enables a wheeled mobile robot to traverse an elevator for the delivery service. In addition, an elevator boarding mission algorithm was developed to perceive the drivable region within the elevator and generate a feasible path that is collision-free. The algorithm was tested with real-world experiments and was demonstrated to perform autonomous postal delivery service in a multi-floor building. We concluded that our study could contribute to building a stable autonomous driving robot system for a multi-floor environment.

• Journal of Fashion Business
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• v.27 no.2
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• pp.108-123
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• 2023

Recent increase of eco-conscious trends and pleasure from Do It Yourself (DIY) activities have led to a surge in sales of package products bundling together clothing patterns and raw materials. However, a well-structured market system is yet to be established. We surveyed 460 women with sewing as a hobby who had purchased these DIY clothing pattern packages. The survey revealed that majority of respondents had their hobby for over five years. Choosing the right fabric to match clothing patterns presented a common challenge. Most participants owned a sewing machine and an overlocker, with price being the primary concern when purchasing a package. For guidance during the sewing process, participants preferred print materials featuring real-life images. Those with less sewing experience leaned towards video tutorials. Items of interest or those commonly created included blouses, shirts, and dresses. Desire for further learning in sewing and pattern-making was prominent, with a clear preference for online classes. Several strategies are recommended to enhance the appeal of DIY clothing package products, including broadening range of packages that incorporate fabric, offering supplementary educational resources to improve users' skills, implementing affordable pricing structures, supplying comprehensive creation guidelines, and making available design modification guides. These considerations could significantly boost customer satisfaction. This research intends to lay groundwork for understanding DIY clothing creation market, ultimately fostering production of highly desirable products. Insights of this study will prove instrumental in refining product development and devising effective marketing tactics, leading to a more rewarding consumer experience.

• Research in Community and Public Health Nursing
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• v.33 no.1
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• pp.43-52
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• 2022

Purpose: This study was to investigate the mediating effects of health concern and depression on the stress and fatigue of COVID-19 self-quarantine. Methods: This was a cross-sectional study. A total of 227 people with COVID-19 self-quarantine experience were recruited during May 2021. Participants were invited to complete self-reported questionnaires that measure stress, health concern, depression, fatigue and demographic information. The data obtained were analyzed using multiple regression and dual mediation model applying the PROCESS macro with 95% bias-corrected bootstrap confidence interval. Results: This study analyzed the direct effects of COVID-19 stress on the health concern, depression and fatigue. And COVID-19 stress had indirect effects on their fatigue via health concern and depression. Both health concern and depression had dual mediating effects in the influence of COVID-19 stress on fatigue. In the relationship between COVID-19 stress and fatigue, the mediating effect of depression was significant. Conclusion: Fatigue due to prolonged COVID-19 can be alleviated by managing stress and mediating health concern and depression, and so therefore active nursing intervention is required.

• Journal of Hydrogen and New Energy
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• v.33 no.1
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• pp.105-112
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• 2022

Copper (Cu)-based catalysts have been widely used in a methanol steam reforming (MSR) reaction for hydrogen production for air-independent propulsion (AIP) applications and their good catalytic activities have attracted much attention. However, the agglomeration of the catalytic active site Cu causes deteriorating the catalytic performance and suppression of Cu agglomeration is a crucial issue in the AIP applications that the MSR system is typically operated at 250-300℃ for a long time. R. Sakai et al. recently showed a computational study on the anchoring effect that reduces an agglomeration of active sites by doping in a supporter. In order to present the anchoring effect on 𝛾-Al₂O₃ supported Cu-based catalysts, in this study, the adsorption energies of Cu on X-doped (X=ruthenium, phosphorus, silicon) 𝛾-Al₂O₃ were calculated and Cu adsorption energy decreased due to a change of the electronic structure originated from doping, thereby proving the anchoring effect.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.258-259
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• 2021

Forest lodge are divided into forest resources, auxiliary facilities, and users, and are constantly being used along with well-being culture. In addition, attention to the safety of users is also required, and this study aims to study how users evacuate within a short time (golden time) in situations of natural disasters that may occur in forests. In order to search for the current location of the user and find the best evacuation route, 3D scans of the entire forest lodge(forest resources, auxiliary facilities, etc.) are performed, and the optimal trajectory to the evacuation site is found through recognition of the current location. It is believed that it is possible to provide a quick evacuation guide through a mobile device with gps.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.285-286
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• 2020

본 논문은 농수축산물 및 도·소매 시장 자료를 통해 데이터베이스를 구축하여 시장별 상품의 가격, 장소, 기간 등의 정보를 일자별로 제공하는 시스템이다. 농수축산물의 경우, 크기, 신선도, 보관기간 등의 다양한 기준에 따라 가격이 형성되는데 상품 특성상 기상 변화와 계절 변화에 따른 생산량 및 상품의 질 차이가 매우 크기 때문에 상품의 공급량과 가격의 안정성을 보장하기 힘들다. 기존의 농수축산물 가격 제공 사례의 경우 정보 제공 범위가 좁아 정보의 유용성에 한계점이 존재하였다. 이를 보완하여 시장 위치와 제품 정보의 구체성 확보, 실시간 가격 정보 제공으로 정보의 폭을 넓혀 경제 주체에게 실질적으로 도움을 주고자 하였다. 이를 통해, 소비자들은 원하는 상품의 정보를 제공받아 가격, 거리, 품질 등의 주관적인 기준에 근거한 합리적 소비를 할 수 있다.

• Journal of the Korean Society of Food Culture
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• v.23 no.1
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• pp.121-129
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• 2008

To produce buckwheat sprouts, buckwheats were germinated at $23{\pm}2^{\circ}C$ up to 8 days in total darkness. In proximate analysis, moisture content increased from 13.87% of buckwheat groats to 93.75% of buckwheat sprouts on the 8th day of germination. On dry weight basis, lipid and ash contents increased like as protein content increased from 13.45% to 21.82% while carbohydrate content decreased due to enzyme hydrolysis. Amino acids were rich in glutamic acid, aspartic acids, and lysine, and also the ratio of the essential amino acids to total amino acids increased from 26.84% to 36.84%. Vitamin C did not exist in buckwheat groats but its content has continued to increase as far as 99.56 mg/100 g buckwheat sprouts. Rutin continued to increase by HPLC analysis from 4.71 mg/100 g buckwheat groats to 1,524 mg/100 g buckwheat sprouts. In analysis of organic acids, oxalic, maleic, and citric acids were commonly found in buckwheat sprouts. Fagopyrin was found almost none in buckwheat sprouts. In conclusion, the conversion of buckwheat seeds into sprouts through germination in darkness results in physically different final product with nutritional changes such as higher content of rutin, generation of vitamin C, abundance of the essential amino acids, and the existence of fagopyrin on very little.

• Fashion & Textile Research Journal
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• v.25 no.3
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• pp.333-345
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• 2023

The rising demand for fashion do-it-yourself (DIY) products that cater to individual preferences and which allow for creative expression has highlighted the need for systematic organization within the clothing society. This study addresses this gap by identifying and discussing clothing DIY packages and proposes a systematic package model comprising essential raw materials, commercial patterns, and production instructions. Four key elements have been emphasized to differentiate and enhance the product. Firstly, highly practical commercial patterns have been developed to facilitate easy transformations - from blouses to dresses. Furthermore, the versatility of these patterns has been optimized so as to allow their utilization as outerwear, increasing their efficiency. Secondly, to accommodate diverse body shapes, the package offers six different sizes, providing users with a range of options tailored to their specific measurements. Thirdly, detailed production instructions are provided, supplemented by a Q&A bulletin board. The instructions are available in a printed format, featuring actual photographs on A4 paper, while video production instructions are accessible via a QR code, ensuring comprehensive guidance. Lastly, the basic package comprises clothing patterns, production instructions, fabrics, and labels, providing a complete toolkit for clothing DIY enthusiasts. This study aims to contribute to the development of the hobby sewing field and to establish a practical resource for the clothing DIY package industry.

• Journal of Fashion Business
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• v.27 no.3
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• pp.96-114
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• 2023

In modern society, there is a tendency to prioritize both fashion and comfort, with a preference for loose-fit clothing that enhances mobility. While darts may not be visibly present on the garment's exterior, their effects should be dispersed and incorporated into the design. However, there is a significant lack of systematic research on dartless patterns in the current state. Therefore, this study focuses on investigating dartless patterns used in loose-fit clothing tailored to the body measurements of women in their 20s. The objective of this research is to develop foundational dartless patterns that serve as a basis for diverse design possibilities in loose-fit clothing. To achieve this purpose, seven dartless patterns introduced in clothing construction references were selected for the production of experimental prototypes, which were then subjected to visual evaluations by a panel of experts. Based on the evaluation results, superior patterns were selected and they underwent modification and improvement to develop the research patterns. The developed research patterns were derived through the formulation of calculation formulas, and based on these formulas, garments were produced. Subsequently, a second round of visual evaluations was conducted by a panel of experts, and notable improvements were observed in most of the aspects assessed. However, it should be noted that this study was limited to women in their 20s it did not explore a wide range of fabrics. Therefore, further research is needed in the future.