• 감성과학
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• 제15권1호
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• pp.9-16
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• 2012

크림은 피부의 보습효과를 비롯하여 유연기능 등 다양한 목적으로 사용된다. 최근에는 천연향 성분의 크림제품이 출시되면서 그 기능에 관심이 모아지고 있다. 본 연구에서는 곽향, 유향, 백단향, 무향 그리고 새로 개발된 조합향(S6) 5개의 천연향을 대상으로 심리생리적 인체 영향을 평가하였다. 첫 번째로 대전지역에 거주하는 20~30대 여성 100명을 대상으로 감성 형용사를 이용한 주관적 평가를 수행하였다. 그 결과, 조합향을 가장 선호하는 것으로 나타났다. 두 번째로 주관적 평가에 참가한 응답자 중 20명을 대상으로 EEG와 ECG, GSR을 측정하였다. EEG 분석 결과, 각 조건에서 알파파의 비율이 높게 나타나는 것을 확인하였다. 통계적 분석 결과, 조합향에서 유의하게 나타나 긴장완화 효과가 가장 큰 것을 알 수 있었다($p$ < 0.05). 이런 결과는 심전도와 피부전기저항 측정값에서도 동일한 경향으로 나타났다. 세 번째로 조합향 제품을 사용하였을 때 피부상태를 측정하였다. 그 결과 피부 온도와 습도, 피부 움직임 속도가 증가하였다. 보습효과와 탄력 효과가 있음을 확인할 수 있었다.

• 한국의류학회지
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• 제31권7호
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• pp.1008-1019
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• 2007

The purpose of this study was to develop an appropriate jacket pattern for elderly women over sixty years old, providing a good fit and appearance. Results were as follows: The length of the jacket was made long enough to cover the area 22.0cm below the waistline. The waist back length was made 1.7cm longer than the actual size of the waist back length. The armhole length was made 0.5cm longer than B/4, enhacing the appearance and functionality while allowing freer movement of the arms. As for the front and back interscye breadths, the front interscye breadth was made 1.7cm larger than the actual size while the back interscye breadth was only 1.0cm larger, providing the front interscye breadth more space. The bust breadth was made 10.0cm larger than the bust circumference measure(B/4+2.5cm), the waist breadth was made 6.0cm larger than the waist circumference measure(W/4+1.5cm), The hip breadth was made 12.0cm larger than the him circumference measure(H/4+3.0cm). The sleeve length was made 3.0cm larger than the arm length measure, as the sleeve length of a jacket is usually long enough to cover the ulnar styloid. The sleeve width was made 5.0cm larger than the upper arm circumference measure, as the upper arm circumference measure of the model pattern was too large than necessary, worsening the overall appearance. The sleeve cap height was set at AH/4+4.7cm. The wrist circumference of 27.0cm was set, allowing 2/3 and 1/3 for the large sleeve and small sleeve respectively.

• 한국정보통신학회논문지
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• 제18권10호
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• pp.2586-2592
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• 2014

사용 중에 유실되는 어구는 해양 오염의 주요 원인이 되며 이를 처리하는 많은 정책적, 기술적 노력이 진행되어져 왔다. 수중에서 유실되는 폐어구를 효과적으로 수거하기 위해서는 현재의 위치를 아는 것이 중요하다. 수중 환경에서 GPS를 이용하는 것은 불가능하며 위치추정을 위해서는 다른 특별한 장치가 필요하다. 그리고 조류에 의한 이동성 또한 수중 위치추정에 고려되어야 한다. 본 논문에서는 GPS나 Sonar와 같은 외부 신호를 이용하지 않고 자체위치정보를 발생하고 이를 저장하는 시스템에 대하여 기술하였다. 관성항법장치 원리와 지자기가 갖는 특성을 이용하여 수중에서 이동 중에서도 위치를 추정할 수 있는 정보를 제공하는 방법과 장치를 제안하였으며, 본 연구에서 제안하고 구현된 임베디드 기반의 시스템의 기능을 확인하기 위한 시험을 수행하였다.

• 한국운동역학회지
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• 제17권3호
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• pp.81-94
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• 2007

The purpose of this study was to critically review biomechanical studies on foot orthoses (FO) in normal and diseased foot and provide beneficial information obtained from researches until now and future researching focus. The search was performed by Medline and Embase database including studies published in English from January 1980 to April 2007. The searching terms were foot orthoses, foot orthotics, insoles and shoe insert. 57 studies including 54 journal articles and 3 abstracts were finally selected under the conditions of having clinical trials, FO, control condition, movement, scientific measuring system. The reviewed studies were divided into 10 categories according to subject characteristics; healthy normal, excessive pronation or flexible flat foot, rheumatoid arthritis, diabetes, medial knee osteoarthritis, forefoot varus, plantar fasciitis, patellofemoral syndrome, cavus foot and finite element model. In summary, first, soft and semirigid FOs with some degree of cushioning showed much higher comfort and efficacy than rigid FO. Second, no big differences between prefabricated and custom FO were shown. Third, the full length's FO was preferable to the half length's FO or simple arch supports. Fourth, the wearing of FO combining medial arch supports and metatarsal dome made positive roles to enhance comfort and functionality and redistribute plantar pressure under the foot. Fifth, for patients with knee-related diseases lateral wedges were preferable. Sixth, measuring systems were properly applied according to the types of foot diseases.

• 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.

• 복식문화연구
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• 제30권3호
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• pp.403-413
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• 2022

The purpose of this study was to develop a 3D mesh-type impact protection pad with excellent motion adaptability and functionality by applying 3D printing technology. The hexagonal 3D mesh, which constitutes the basic structure of the pad, comprises two types: small and large. The bridge connecting the basic units was designed as the I-type, V-type, IV-type, and VV-type. After evaluating the characteristics of the bridge, it was found that the V-type bridge had the highest flexibility and tensile elongation. The hip joint pad and knee pad were completed by combining the hexagonal 3D mesh structure with the optimal bridge design. The impact protection pad was printed using a fused deposition modeling-type 3D printer with a filament made of thermoplastic polyurethane material, and the protection pad's performance was evaluated. When an impact force of approximately 6,500N was applied to the pad, the force attenuation percentage was 78%, and when an impact force of approximately 8,000N was applied, the force attenuation percentage was 75%. Through these results, it was confirmed that the 3D-printed impact protection pad with a hexagonal 3D mesh structure connected by a V-shaped bridge developed in this study can adapt to changes in the body surface according to movement and provides excellent impact protection performance.

• 한국의류학회지
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• 제46권3호
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• pp.424-435
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• 2022

Aesthetic impression, structural stability, functionality during exercise, freedom of movement and physiological suitability should be considered when developing aquarobic wear for middle-aged women. We conducted a visual evaluation of the commercial aquarobic wear of the five brands (ARENA, TURN, RALLY, RENOMA and ELLE) with the highest market share and selected three items: one-piece type (OPT); two-piece type (TPT) and whole-body type (WBT). These are the most worn types of aquarobic wear for each brand. The G4 showed the best results in appearance evaluation of the shoulder strap width, front neckline, armhole line, side hip line and short pants length in the OPT category. The TPT had better ratings as the shoulder strap was located in the center of the shoulder, and the front and the back necklines were not too deep. The five items of WBT clothing received similar ratings for each element, so it is considered that the advantages are evenly distributed. No single design was a clear favorite. Based on the above results, continuous research on the development of aquarobic wear that is more suitable and preferable for middle-aged women should be conducted.

• Journal of Positioning, Navigation, and Timing
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• 제12권4호
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• pp.437-445
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• 2023

A space system refers to a network of sensors, ground systems, and space-craft operating in space. The security of space systems relies on information systems and networks that support the design, launch, and operation of space missions. Characteristics of space operations, including command and control (C2) between space-craft (including satellites) and ground communication, also depend on wireless frequency and communication channels. Attackers can potentially engage in malicious activities such as destruction, disruption, and degradation of systems, networks, communication channels, and space operations. These malicious cyber activities include sensor spoofing, system damage, denial of service attacks, jamming of unauthorized commands, and injection of malicious code. Such activities ultimately lead to a decrease in the lifespan and functionality of space systems, and may result in damage to space-craft and, lead to loss of control. The Cybersecurity Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK) matrix, proposed by Massachusetts Institute of Technology Research and Engineering (MITRE), consists of the following stages: Reconnaissance, Resource Development, Initial Access, Execution, Persistence, Privilege Escalation, Defense Evasion, Credential Access, Discovery, Lateral Movement, Collection, Command & Control, Exfiltration, and Impact. This paper identifies cybersecurity activities in space systems and satellite navigation systems through the National Institute of Standards and Technology (NIST)'s standard documents, former U.S. President Trump's executive orders, and presents risk management activities. This paper also explores cybersecurity's tactics attack techniques within the context of space systems (space-craft) by referencing the Sparta ATT&CK Matrix. In this paper, security threats in space systems analyzed, focusing on the cybersecurity attack tactics, techniques, and countermeasures of space-craft presented by Space Attack Research and Tactic Analysis (SPARTA). Through this study, cybersecurity attack tactics, techniques, and countermeasures existing in space-craft are identified, and an understanding of the direction of application in the design and implementation of safe small satellites is provided.

• 한국농촌건축학회논문집
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• 제26권3호
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• pp.37-44
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• 2024

Currently, convergence research is being conducted in various research facilities in Korea, but it is true that there are very few multi-purpose convergence research facilities that can support such convergence research in universities, which are the most basic research group. In the case of multi-purpose convergence research facilities installed in universities, human resources from more diverse fields gather to conduct various studies than general research facilities, so the facilities should be planned to reflect these characteristics, and the space should be planned to promote human exchanges. The basic guidelines for planning multipurpose convergence research facilities installed in universities are as follows. First, multi-purpose convergence facilities in universities should be based on the habitability and convenience of users who use the facilities, and functionality, promotion of human resource exchange, symbolism, and eco-friendliness should be set as major planning factors. Second, in the case of internal planning, it is necessary to secure a efficient research and public space, a short and clear movement and evacuation plan, a future-oriented image and symbolism, an eco-friendly facility plan, efficiency through zoning and modularization, and future expansion. Third, in the case of size setting, it is appropriate to plan around 18,000m² of total floor area, and considered safe to plan around 45% of research & education area, 6% of support area, 5% of convenience area, 4% of exhibition area, and 40% of public areas by use, but additional reviews should be conducted according to the situation of each university or local region.

• 디지털융복합연구
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• 제12권1호
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• pp.563-572
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• 2014

아르누보는 예술을 새롭게 개혁하여 젊게 만들고자 하는 목적에서 출발하였다. 역사상의 양식 모방에 반기를 들어 삶과 주변 환경의 총체적 변혁을 포괄하는 현대적이며 시류에 맞는 양식을 요구하는 운동이었다. 장신구 또한 이전의 양식에서 탈피한 새로운 양식을 구축하고자 하였으며 소재와 재료의 새로운 시도와 함께 장인적 기술력이 강조된 섬세한 장신구가 선보였다. 아르누보의 양식은 유럽 전반에 각기 나라의 문화에 맞추어 다양하게 전개되었으며, 짧지만 강렬하게 20세기 이후 양식의 기초가 되었다. 아르누보 이후의 장신구는 산업과 예술 장신구로 나뉘어 발전을 거듭해왔으며 현대에 이르기까지 많은 발전에 영향을 미쳤다. 아르누보는 장신구를 재화의 가치를 넘어서 예술적 가치로서의 확립을 이끌었다. 아르누보의 다양한 조형성을 통해 표현된 심미적 장신구와 생산력과 기능성에 치우친 단조롭고 귀보석 중심의 현대 장신구 디자인과는 차이를 갖는다. 현대에는 개성과 자아표출을 중시하는 문화 예술의 시대로 창의적, 독창적인 디자인을 추구한다. 따라서 시대적 배경과 사상을 통해 표현된 아르누보의 다채로운 색상 표현과 다양한 소재와 모티프의 장신구 양식은 현대 장신구의 새로운 디자인 개발 과 디자인 흐름을 이끌어 가기위한 귀감이 될 것으로 본다.