Earticle

In this study, the effects of psychosocial stress (box color and precision demand) on muscle activity were evaluated in laboratory setting. Eight subjects performed sagittally symmetric lifting tasks. Box color (yellow, black), precision demand (yes, no), and box weight (5%MVC, 10%MVC, 15 %MVC) were varied and surface EMG signals from seven muscles(medial deltoid right, biceps brachii right, lateral triceps right, latissimus dorsi right, erector spinae right, external oblique right, internal oblique right) were recorded. EMG signals were band-pass filtered(10~400 Hz), rectified, RMS smoothed and normalized (NEMG). Analysis of variance tests were conducted on the total NEMG (TNEMG: the sum of the seven muscles' NEMGs) and on the individual muscle's NEMGs. Box color had no effect on the TNEMG and on the seven muscles activities(p>0.05). When precision demand was required at the end point of lifts, the mean NEMG showed higher values than no precision demand conditions: TNEMG (14% increase) and medial deltoid(40% increase), biceps brachii(10% increase), lateral triceps(26% increase), latissimus dorsi(25% increase) muscles. Those increases showed more conspicuous as the box weight increased in the muscles of medial deltoid, lateral triceps, and latissimus dorsi.

The secure access the lighting, Heating, ventilation, and air conditioning (HVAC), fire safety, and security control boxes of building facilities is the primary objective of future smart buildings. This paper proposes an authorized user access to the electrical, lighting, fire safety, and security control boxes in the smart building, by using color grid coded optical camera communication (OCC) with face recognition Technologies. The existing CCTV subsystem can be used as the face recognition security subsystem for the proposed approach. At the same time a smart device attached camera can used as an OCC receiver of color grid code for user access authentication data sent by the control boxes to proceed authorization. This proposed approach allows increasing an authorization control reliability and highly secured authentication on accessing building facility infrastructure. The result of color grid code sequence received by the unauthorized person and his face identification allows getting good results in security and gaining effectiveness of accessing building facility infrastructure. The proposed concept uses the encoded user access authentication information through control box monitor and the smart device application which detect and decode the color grid coded informations combinations and then send user through the smart building network to building management system for authentication verification in combination with the facial features that gives a high protection level. The proposed concept is implemented on testbed model and experiment results verified for the secured user authentication in real-time.

본 연구는 편의점 도시락의 라벨 색상이 소비자들의 건강 인식에 미치는 영향 요인에 대해 알아보았다. 즉, 도시락의 영양 성분 표시가 적혀 있는 포장지의 색상 (빨간색 vs. 초록색)에 따라 도시락의 영양 가치와 건강성 인식이 달라지고 이로 인해 구매 의향이 영향을 받는지를 규명하였다. 또한 포장지의 색상에 의한 도시락의 건강성 인식이 헬스 리터러시에 따라 조절되는지를 살펴보았다. 본 연구는 리서치 회사에서 보유한 전국 단위의 온라인 패널 중 만 18∼39세의 성인 216명이 연구에 참여하였다. 연구 결과 초록색 포장지의 도시락이 영양가치가 더 높은 것으로 인식되었으며, 지각된 영양가치는 건강성 인식과 구매 의향에 영향을 미치는 것으로 나타났다. 또한 포장지의 색상이 영양가치 인식에 미치는 영향은 헬스 리터러시가 조절적 역할을 하는 것으로 나타났다. 본 연구의 결과는 편의점 도시락을 이용하는 소비자들을 위한 상품개발 방안과 마케팅 전략 수립에 대한 시사점을 제시한다.

This study aimed to investigate a mediating role of perceived nutritional value and healthfulness in the relationship between label color (green vs. red) and an intention to buy a lunch box sold in the convenience store. In addition, this study explored the moderating role of health literacy in the collective effect of the label color, perceived nutritional value, healthfulness and an intention to buy the product. A one factor between group design (label color: green vs. red) online experiment was conducted with 216 adults aged from 18 to 39 years old, who buy lunch boxes at the convenience stores. Health literacy moderated the mediation effect of the perceived nutritional value and healthfulness in the relationship between the label color and an intention to buy the product. People with low health literacy perceived that the product with a green label is better in nutritional value. Perceived nutritional value increased the intention to buy the product by increasing perceptions about healthfulness. This study highlights the importance of health literacy education.