• 전자통신동향분석
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• 제33권3호
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• pp.89-99
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• 2018

Human activity recognition (HAR) is a technology that aims to offer an automatic recognition of what a person is doing with respect to their body motion and gestures. HAR is essential in many applications such as human-computer interaction, health care, rehabilitation engineering, video surveillance, and artificial intelligence. Smartphones are becoming the most popular platform for activity recognition owing to their convenience, portability, and ease of use. The noticeable change in smartphone-based activity recognition is the adoption of a deep learning algorithm leading to successful learning outcomes. In this article, we analyze the technology trend of activity recognition using smartphone sensors, challenging issues for future development, and a strategy change in terms of the generation of a activity recognition dataset.

• 한국조리학회지
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• 제24권1호
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• pp.13-23
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• 2018

This study aimed to investigate the characteristics of 3 pre-treatment of mealworm(Tenebrio molitor), and offer basic research data through appropriate pre-treatment method based on the component analysis result. This study was preparing the control group sample No.0(not contain mealworm), and the other sample (Sample No.1,2,3) was using the mealworm prepared in each of the three methods. By using the sample, this study conducted an inspection for component analysis, mineral contents, pH, color value, total amount polyphenols, DPPH radical scavenging activity, reducing power, acceptance test. Each experiments are three times repeated and validated following the one-way ANOVA analysis to verify a significant difference. Acceptance test conducted by 50 consumers indicate consumption decision for sunsik. using the seven point scale, assessment for appearance, flavor, taste, texture, overall acceptance. The research findings showed that sample containing sauted mealworm(SE2) is higher preference and significant in antioxidant activity(total amount polyphenols, DPPH radical scavenging activity, reducing power). Therefore, it is better to use sauted. The result of this study suggest that sauted mealworm is good ingredient for consumer acceptability and functionality of sunsik. According to results of the study, it is suggested to make better use of food, and provide food developer with meaningful date for market targeting. In addition, this study also provides the information for improving awareness of edible insect.

• 한국의류학회지
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• 제39권3호
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• pp.419-432
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• 2015

This paper examines the protective clothing satisfaction rate of riot policemen. The protective clothing currently in use is the version that underwent enhancement and was distributed in 2009. This version underwent significant enhancements compared to the protective clothing introduced in 1996 in terms of safety and body fitness; however, there is room for further enhancement in terms of activity, thermal comfort and easiness. In this research, a questionnaire survey was conducted on 386 riot policemen working at the Seoul Riot Police Station to study their use of protective clothing and satisfaction rate. The survey questions included safety, activity and body fitness in terms of functionality and comfort as well as easiness and design in terms of wearing comfort. Activity scored the lowest (2.89) in terms of functionality as well as comfort (2.40) that scored the lowest in terms of wearing comfort. It is concluded that, in order to correct deficiencies, the weight of protective clothing must be reduced and design changes must be made to eliminate unnecessary areas in clothing and facilitate faster dressing/undressing. In addition, it is strongly recommended that shock absorption materials be inserted only in vital areas in order to enhance thermal comfort.

• Journal of Information Science Theory and Practice
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• 제8권3호
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• pp.47-63
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• 2020

This study focuses on users of activity tracking technologies and their related information behavior. How useful is the provided information by the trackers? Do users understand all information and explanations? We conducted a web-based survey. All in all, 631 users of a tracking device filled out the survey. From the perspective of information science, this investigation aims to analyze information needs considering different types of the provided information by activity tracking technologies. Are users satisfied by using the information on their steps, heart rates, and sleep duration? How do users assess readability about heart rate zones and sleep stages? Additionally, we investigated if users understand how to reflect on and adapt their health behavior based on the received explanations. According to the results, users mainly agree that the received information (raw data as well as - to a lesser extent - aggregated data in the form of corresponding diagrams) is useful, that the explanations are easy to understand, and that they know how to use this obtained information. This investigation enables an in-depth insight into how users are applying the self-quantifying activity and health information and which information needs are satisfied.

• 한국게임학회 논문지
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• 제22권1호
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• pp.99-108
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• 2022

신체 활동 증진을 위한 디지털 게임의 높은 활용에도 불구하고, 활동형 게임 이용에 영향을 미치는 요인에 대한 체계적 이해는 부족하다. 이 연구는 건강 행위의 생태학적 모형을 기반으로, 신체 활동에 영향을 미치는 요인을 개인적, 환경적, 사회적 요인으로 세분화하고, 신체 활동을 활동형 게임 이용과 일상적 신체 활동으로 구분하여 각 행위에 영향을 미치는 요인을 통합적으로 살펴보았다. 그 결과, 일상적 신체 활동은 세 요인이 모두 영향을 미치는 것과는 달리 활동형 게임 이용에는 사회적 요인만 영향을 미치는 것으로 나타났다. 이는 활동형 게임 이용 확대에 사회적 요인이 중요한 영향을 미칠 수 있음을 시사하고 있다.

• 한국전문물리치료학회지
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• 제20권3호
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• pp.89-99
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• 2013

The purposes of this study were: 1) to show the item difficulty hierarchy of walking/moving construct of the International Classification of Functioning, Disability and Health-Activity Measure (ICF-AM), 2) to evaluate the item-level psychometrics for model fit, 3) to describe the relevant physical activity defined by level of activity intensity expressed as Metabolic Equivalent of Tasks (MET), and 4) to explore what extent the empirical activity hierarchy of the ICF-AM is linked to the conceptual model based on the level of energy expenditure described as MET. One hundred and eight participants with lower extremity impairments were examined for the present study. A newly created activity measure, the ICF-AM using an item response theory (IRT) model and computer adaptive testing (CAT) method, has a construct on walking/moving construct. Based on the ICF category of walking and moving, the instrument comprised items corresponding to: walking short distances, walking long distances, walking on different surfaces, walking around objects, climbing, and running. The item difficulty hierarchy was created using Winstep software for 20 items. The Rasch analyses (1-parameter IRT model) were performed on participants with lower extremity injuries who completed the paper and pencil version of walking/moving construct of the ICF-AM. The classification of physical activity can also be performed by the use of METs that is often preferred to determine the level of physical activity. The empirical item hierarchy of walking, climbing, running activities of the ICF-AM instrument was similar to the conceptual activity hierarchy based on the METs. The empirically derived item difficulty hierarchy of the ICF-AM may be useful in developing MET-based activity measure questionnaires. In addition to convenience of applying items to questionnaires, implications of the finding could lead to the use of CAT method without sacrificing the objectivity of physiologic measures.

• 생약학회지
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• 제32권3호통권126호
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• pp.253-256
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• 2001

The present study was designed for the improvement of routine measurement of superoxide and hydroxyl radical scavenging activities utilized by a microplate reader. Superoxide radical scavenging activity by the ascorbic acid, which is a well-known superoxide scavenger, was determined in a dose-dependent manner. Hydroxyl radical scavenging activity by the thiourea, which is a well-known hydroxyl radical scavenger, was also well detected in a dose-dependent manner. Our results suggest that the use of microplate reader to assay the superoxide and hydroxyl radical scavenging activities improves the accuracy of data and enables the use of much smaller amounts of samples and/or reagents, with much simpler experimental procedure. Therefore, These methods appear to be suitable for screening of superoxide and hydroxyl radical scavenging activities in both the plant medicinal extracts and the isolated compounds.

• Bulletin of the Korean Chemical Society
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• 제15권1호
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• pp.15-20
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• 1994

The adsorption model in reversed phase liquid chromatography has been critically examined. It has been found that use of the Everett type surface activity coefficient for the solute in the stationary phase is not useful to study the retention characteristics of a nonpolar solute. We suggest a modified model. In this model it is assumed that the displaced modifier molecules from the surface monolayer do not transfer into the bulk mobile phase but stick to the nonpolar solute which has displaced them. In addition, we prefer to use an apparent stationary phase activity coefficient of the soluie instead of the Everett type activity coefficient. This modified adsorption model well explains the mobile and stationary phase effects on the solute retention upon variation of mobile phase composition.

• 한국도서관정보학회지
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• 제44권2호
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• pp.97-116
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• 2013

이 연구는 독서와 마라톤을 접목하여 개발 운영한 공공도서관의 독서진흥 프로그램이 독서활동에 미치는 영향을 파악하기 위한 것이다. 이 연구를 위하여 문헌연구와 독서진흥 프로그램을 개발 운영하고, 참여자를 대상으로 설문조사와 면담을 실시하였다. 이 연구의 결과, 1) 독서마라톤 프로그램의 만족도가 높은 사람들이 독서량이 증가되고 도서관 이용 빈도가 더 많은 것으로 나타났다. 2) 독서마라톤 참여 이후에 가족들과 책에 관한 대화가 더 많은 것을 알 수 있었다. 독서마라톤 프로그램이 독서활동에 긍정적인 영향을 미치는 것으로 나타났다.

• Journal of Preventive Medicine and Public Health
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• 제23권2호
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• pp.194-200
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• 1990

The paraoxonase (E. C. 3.1.1.2) is a major enzyme to detoxicate the organophosphorus and carbamate which are the most widely used as the agricultural spraying insecticides. To investgate the distributions of plasma paraoxonase activity and the factors affecting the enzyme activity, the plasmas of 945 Korean rural population were analysed with the modified Krisch's direct sphectrphotometry method. Three indices of the enzyme activity - basal activity, stimulated activity (by NaCl), % stimulation - were obtained from the analysis. Three indicies suggested unimodal distributions, so we couldn't identify the low activity group risk group to organophosphorus & carbamate insecticides poisoning. There is no significant relation between 3 actvity indicies and sex, age, or history of insecticide use (p>0.05). The basal activity and the stimulated activity have significant relationship and high coefficient of determination with the activities of their parents ($r^2$=0.30, 0.24 ; p<0.05), but the % stimulation does not ($r^2$=0.02 ; p<0.05). These results suggest that the activity of paraoxonase is determined mainly by the genetic factor.