• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전기물성,응용부문
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• pp.84-86
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• 2001

Acrylonitrile Butadiene Rubber (NBR) has been used as a transformer gasket material because the transformer gaskets should have high resistivity to oil and should not swell and deform when it contact to insulating oils. Serious cracks were observed in the gaskets being used and ozone test was performed on new, specimens. Cracks were also observed on specimens. So we have performed the following tests on the anti-oxidants containing new gaskets according in accordance with KEPCO purchase specifications; ozone resistance, oil resistance, mechanical properties before and after aging.

• Archives of Plastic Surgery
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• 제46권3호
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• pp.228-234
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• 2019

Background The management of flexor tendon injuries has evolved in recent years through industrial improvements in suture materials, refinements of repair methods, and early rehabilitation protocols. However, there is no consensus on the ideal suture material and technique. This study was conducted to compare the tensile strength, repair time, and characteristics of 4-strand cruciate, modified Kessler, and 4-strand horizontal intrafiber barbed sutures for flexor tenorrhaphy with a 12-mm suture purchase length in an animal model. Methods The right third deep flexors of 60 adult Leghorn chicken feet were isolated and repaired with a 12-mm suture purchase length. The tendons were randomly assigned to three groups of equal number (n=20 each). Groups 1 and 2 received 4-strand cruciate and modified Kessler repair with conventional suture materials, respectively. A 4-strand horizontal intrafiber barbed suture technique was used in group 3. The repaired tendons were biomechanically tested for tensile strength, 2-mm gap resistance, and mode of failure. Repair times were also recorded. Results The maximum tensile strength until failure was $44.6{\pm}4.3N$ in group 1, $35.7{\pm}5.2N$ in group 2, and $56.7{\pm}17.3N$ in group 3. The barbed sutures were superior to the other sutures in terms of the load needed for 2-mm gap formation (P<0.05). Furthermore, the barbed sutures showed the shortest repair time (P<0.05). Conclusions This study found that 4-strand horizontal intrafiber barbed suture repair with a 12-mm purchase length in a chicken flexor tendon injury model showed promising biomechanical properties and took less time to perform than other options.

• 한국의상디자인학회지
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• 제20권4호
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• pp.163-174
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• 2018

Consumer and property evaluation of wetsuit materials were conducted to obtain useful data for developing competitive products that meet consumer expectations and improving industrial competitiveness. Data were collected through online surveys of 213 domestic consumers who have experienced wearing wetsuit among marine leisure activities. Five types of commercial wet suit materials by brand and four types of commercial wet suit materials with the same quality by thickness were collected. Then, their physical properties, salt water resistance and thermal insulation rate were evaluated and compared. As a result, the most commonly used wetsuit material is 3 to 5 mm thick, and the basic jersey material is bonded on both sides. As a processing for imparting functionality, processing for improving warmth and reducing surface resistance are most frequently used. Consumers often feel uncomfortable when wearing a wetsuit, such as wearing comfort, weight, ease of movement, stretchability, and clothing pressure, which are different from those of casual wear. Also, mechanical strength and warmth were considered to be the most important criteria for selection of wetsuit material for purchase or rental. The mechanical properties of brand A and B were better than those of brand C, D, and E. Resilience and thermal shrinkage were better in brand C, D, and E. On the other hand, there was no significant difference in the physical properties due to the difference in thickness of the material at the same quality. Also, it was found that the thicker the material, the more stable it is in the heat. Brand A and B had superior salt water resistance than brand C, D, and E. In the thermal insulation test, brand A and B showed better insulation characteristics than brand C, D, and E, but the types of bonded fabric and surface finishing of materials were thought to have affected. In comparison of the thickness, the thicker the materials, the better the salt resistance and the thermal insulation.

• Asian-Australasian Journal of Animal Sciences
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• 제32권12호
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• pp.1923-1932
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• 2019

Objective: We investigated visual marbling level (VML) influence on pork loin physicochemical traits, consumer palatability responses, VML liking, purchase intent, and their relationships. Methods: For each of five slaughtering dates, at 24-h postmortem, nine paired Duroc castrated male boneless Longissimus dorsi (LD) muscles were categorized into low (LM, score 1 to 2, n = 3), medium (MM, score 3 to 4, n = 3), and high (HM, score 5 to 6, n = 3) VML. Meat physicochemical quality traits and consumer responses (n = 389) on palatability and VML liking, and purchase intent were evaluated. The experiment was in randomized complete block design. Analysis of variance, Duncan's multiple mean comparisons, and correlation coefficients were determined. Results: VML correspond to crude fat (r = 0.91, p<0.01), but both were reversely related to moisture content (r = -0.75 and -0.91, p<0.01, respectively). As VML increased, ash (p<0.05) and protein (p = 0.072) decreased, pH and $b^{\star}$ increased (p<0.05), but drip, cooking (p<0.05) and thawing (p = 0.088) losses decreased. Among treatments, muscle fiber diameter, sarcomere length, total and insoluble collagen contents, $L^{\star}$, and $a^{\star}$ did not differ (p>0.05). Compared to the others, HM had lower collagen solubility percentage (p<0.05), but similar (p>0.05) Warner-Bratzler shear force (WBSF). No differences (p>0.05) were found in juiciness, overall flavor, oiliness, and overall acceptability, but HM was more tender (p<0.05) than the others. Based on VML, consumers preferred MM to HM (p<0.05), while LM was similar to MM and HM (p>0.05). Corresponding to VML preference (r = 0.45, p<0.01), consumers (83%) would (p<0.01) definitely and probably buy MM, over LM (74%), and HM (68%), respectively. Conclusion: Increasing VML in pork LD altered its chemical composition, slightly increased pH, and improved water holding capacity, thereby improving its tenderness acceptability. Marbling might reduce chewing resistance, as lower collagen solubility in HM did not impact tenderness acceptability and WBSF. While HM was rated as most tender, consumers visually preferred and would purchase MM.

• 한국조경학회지
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• 제51권4호
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• pp.46-55
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• 2023

본 연구에서는 일반 시민을 대상으로 유기농업과 친환경 농산물에 대한 인식 및 구매행태를 조사하고, 유기농업에 대한 인식이 친환경 농산물의 소비와 가격 저항성에 영향을 미치는지, 또한 향후 유기농업 활성화를 위한 조건이 될 수 있는지에 대해서 도출하고자 하였다. 따라서 본 연구에서 설정된 연구 가설은 다음과 같다. 첫째, 유기농업의 환경성/공익성 인식은 친환경 농산물 소비에 영향을 미칠 것이다. 둘째, 유기농업의 환경성/공익성 인식은 유기농업 활성화에 영향을 미칠 것이다. 마지막으로, 친환경 농산물 소비 경험은 유기농업 활성화에 영향을 미칠 것이다. 이를 검증하기 위해 유기농업의 환경적·공익적 요인을 도출하여 전국 성인남녀 1,500명을 대상으로 인터넷 조사를 실시하였으며, 도출된 결과를 토대로 로지스틱 회귀분석 등 통계분석을 실시하였다. 분석 결과 유기농업에 대한 환경적·공익적 인식이 친환경 농산물 소비까지로 이어지는 요인이 아닌 것으로 나타났으나, 환경적·공익적 인식이 높은 경우 친환경 농산물 소비에 가장 큰 제약 원인인 가격에 대한 저항성이 낮은 것으로 확인되었다. 또한 환경적·공익적 인식이 강할수록 유기농업의 확대에 대한 지지와 친환경 농산물 구매의향에 긍정적인 영향을 미치는 것으로 나타났다. 본 연구의 결과는 유기농업에 대한 소비자 인식과 태도를 확인함으로써 향후 친환경 농산물 소비 및 유기농업 활성화 대책 마련의 기초 자료로서 활용될 것으로 기대된다.

• 디지털융복합연구
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• 제19권11호
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• pp.525-536
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• 2021

본 연구는 웨어러블 헬스케어 디바이스 사용자의 지각된 가치(혁신적 가치, 실용적 가치, 상징적 가치)와 혁신 특성(혁신 저항, 가시성)이 구매 태도에 미치는 영향과 지각된 가격, 구매 태도가 고객만족도에 미치는 영향을 살펴보았다. 현재 웨어러블 헬스케어 디바이스를 사용하고 있는 실사용자를 대상으로 설문 조사를 실시하였고, 최종 201부를 SPSS 25와 SmartPLS 3.0을 사용하여 분석하였다. 연구 결과를 요약하면 다음과 같다. 첫째, 지각된 가치 중 혁신적 가치, 실용적 가치는 사용자의 구매 태도에 정(+)의 영향을 미치며, 상징적 가치는 사용자의 구매 태도에 영향을 미치지 않는 것으로 나타났다. 둘째, 혁신특성 중 혁신 저항은 사용자의 구매 태도에 부(-)의 영향을 미치는 것으로 나타났으며, 혁신특성 중 가시성은 사용자의 구매 태도에 영향을 미치지 않는 것으로 나타났다. 셋째, 지각된 가격은 사용자의 구매 태도에 정(+)의 영향을 미치는 것으로 나타났으며, 넷째, 지각된 가격과 구매 태도는 사용자의 고객 만족도에 정(+)의 영향을 미치는 것으로 본 연구를 통해 확인하였다. 이러한 연구 결과를 바탕으로 이론적 시사점과 실무적 시사점 및 향후 연구 방향을 제시하였다.

• 대한가정학회지
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• 제36권7호
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• pp.97-110
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• 1998

The purpose of this study was to examine the use and purchase patterns, design and satisfaction degree, and desired performance of boardsailing suits. The subjects were 266 boardsailing athletes and lovers. The results were as follows; (1) The demand of boardsailing suits for spring and autumn was larger than that for the other seasons. (2) The order of influencing power in purchasing boardsailing suits was fitness, textile material, design, color, cost, and brand. (3) Preference of design was one piece style and preference of pattern was character pattern. Additionally, the study on Korean patterns was demanded for international games like Olympics. (4) The order of satisfaction degree of currently used boardsailing suits was activity, size, design, material, sewing, color, pattern, and ease of wearing and taking off. (5) For the performance of boardsailing suits materials, the estimated values of absorbency, water repellency, dye fastness, biological resistance, weight, handle, air permeability, durability, and elasticity were much lower than the importance values.

• 한국정보시스템학회지:정보시스템연구
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• 제17권1호
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• pp.45-62
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• 2008

The purpose of this research is to investigate success factors and strategics of convergence products in Korea. The research based on existing literature regarding the innovation resistance and product bundling, examines the factors influencing consumer responses to convergence products. The research scheme was experimented through a questionnaire survey answered by 128 companies. The research model was composed of 4 groups: 1) consumer innovativeness, 2) perceived usefulness and ease of use, 3) perceived risk, 4) new product risk The results of this research reveal that consumer evaluation(consumer satisfaction and purchase intentions) are affected by consumer perceptions of risk, perceived usefulness, perceived ease of use, new product risk.

• 현장농수산연구지
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• 제18권1호
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• pp.47-61
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• 2016

Ranging from a variety that a consumer to purchase and consume, and a variety with high quality and pest resistance, sustaining biological diversity as well as hiring global experts who understand breeding policy, it tightly maintains relationship with producer, consumer, and exporter to promote superior species for customized export to exporting country. By carrying out researches on cost saving and how to shorten the period of apple to cultivate, it consolidates its stance as a competent apple exporting country of apple and pear with high competetiveness. In order to compete against apple and pear of New Zealand, farmers argue that they need budget and researchers also argue that "No money, no research." Due to certain limit of governmental budget support, it is believed that it is time to fund our own way to promote apple research center. To come up with the best apple production, all of those who associates with apple such as farmers, researchers, government, exporters, and consumer should do their best to enhance the apple and pear industry.

• 대한가정학회지
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• 제19권2호
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• pp.143-149
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• 1981

Consumer consider the purpose for which they plan to use clothes when they purchase it, and the socks in textile products is evaluated in the same way. serviceability is judged by the extent to which the socks will be useful for its intended purpose. It should retain its original shape and size, good air permeability, good absorbency, good abrasion resistance, high fastness etc. Owing to importance of serviceability in socks, in this paper, these end-use requirement characteristics were tested. The results obtained were as follows: 1. Blend ratios were different between the indicated fiber contents on labels and the testing ones. 2. Air permeability was higher in the samples which contain less stitch density, and hydroscopicity was higher in those which contain natural fibers such as cotton and wool. 3. Shrinkage depended on the blend ratios of cotton and wool, and elastic recovery was better in the course direction than in the wale direction. 4. Pilling was conspicuous in the synthetic fibers such as polyester and nylon, and fastness of laundering and perspiration was higher in the fading grade than in the staining grade.