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Crossmodal representation of affective states based on behavioral and physiological data
( Junhyuk Jang ),( Jongwan Kim ) 한국감성과학회 2021 한국감성과학회 국제학술대회(ICES) Vol.2021 No.-
In this study we explored representation of affective states derived from stimuli of multiple modalities. We used the multidimensional scaling (MDS) and classification techniques to decode affective information, and found that representation of emotion is consistent across different modalities.
( Junhyuk Kim ) 대한운동사협회 2022 대한운동사협회 운동사대회자료집 Vol.2022 No.-
[OBJECTIVES] This study aims to analyze the acute effect of active tibial rotation exercise on tibial torsion angle, ankle range of motion, and neuromuscular control. [METHODS] Subjects for this study based on AB/BA Crossover design are divided into two conditions, Core-tex tibial rotation exercise conditions(17 people) and Manual tibial rotation exercise conditions(17 people). A pre-test consisting of tibial torsion angle, non-weight bearing ankle range of motion and weight bearing ankle range of motion and dynamic balance test and shark skill test was conducted before tibial rotation exercise was perfomed. Post-test using the same tests. Participants performed active tibial rotation exercise using core-tex and passive tibial rotation exercise using manual, and were conducted as acute exercise. [RESULTS] First, the variables that showed significant differences depending on duration of tibial rotation exercise were left tibial torsion angle and bilateral non-weight bearing ankle range of motion and bilateral weight bearing ankle range of motion. From the dynamic balance test, bilateral anterior reach and bilateral posteromedial reach, right posterolateral reach, bilateral composite reach distance. From the shark skill test, bilateral test score. Second, There was no variable that showed a significant difference between the two conditions. Third, The variables that significant interaction effects between the duration and conditions were left non-weight bearing ankle range of motion and right posterolateral of dynamic balance test. [CONCLUSION] Tibial rotation exercise is considered to be valuable as sports injury prevention training because it’s effective for lower extremity in the aspect of functional and structural regardless of the type of tibial rotation exercise.
JunHyuk Kwon,Seong Choon Jeong 대한건축학회지회연합회 2014 대한건축학회연합논문집 Vol.16 No.6
Introducing the concept of construction safety in the design/planning phase can improve the efficiency and effectiveness of safety management on construction sites. In this sense, further improvements for safety can be made by designers’ involvement in the elimination or management of design-related hazards in addition to contractors’ own efforts, as known as Prevention through Design (PtD). However, this idea has not been well materialized in construction practices due in part to the lack of a PtD tool that allows designers to automatically check and evaluate designs in terms of worker safety. The paper addresses this issue by designing and testing an automated compliance checking framework that extracts information relevant to design-related hazards from regulatory documents and maps it to each of related design components using Natural Language Processing (NLP) and Building Information Modeling (BIM). The proposed framework has two key functions: 1) automatically extracting machine-readable regulation information relevant to design-related hazards using NLP techniques; and 2) automatically mapping such information to corresponding design components in a building information model, enabling the visualization of hazards. How all these components work to automatically display design-related hazards and relevant regulatory information is illustrated with a three-story building, focusing on fall protection. The proposed framework successfully extracted regulation information from textual documents with about 90% of precision and recall rates. It also correctly identified all the hazards in the case study model. The automated framework is expected to facilitate safety design review by improving designers and contractors’ proactive responses against design-related hazards
What is the Role of Collectivism in Channel Marketing?
( Junhyuk Suh ),( Boa Son ) 서암순창장학회 2016 Journal of Marketing Thought Vol.3 No.1
Our study aims to explore the role of collectivism in the field of channel marketing. We think collectivism is an important organization of culture beyond the national level and a main element in network embeddedness, group norms, and sense of community. Specifically, herein, we analyzed the source of network embeddedness and redefined group norms in a multidimensional setting. Also, we propose that the group norms and sense of community are the main effects of network embeddedness. Hypotheses based on these ideas were tested with 100 managers of large Korean companies. Our results show that collectivism as an organizational culture had a positive effect on network embeddedness, group norms, and sense of community. Moreover, network embeddedness had a positive effect on the sense of community, but it did not influence group norms positively. We discuss our findings and their implications.
A Comparison of Cervical Flexion, Pain, and Clinical Depression in Frequency of Smartphone Use
Junhyuk Park,Kwangho Kim,Namkang Kim,Inwon Choi,Sujung Lee,Sajin Tak,Jongeun Yim 보안공학연구지원센터 2015 International Journal of Bio-Science and Bio-Techn Vol.7 No.3
In the past decade, there has been a rapid increase in the use of mobile phones and other small hand-held devices for communication. A forward head posture (turtle neck posture) is becoming more common with the increasing popularity of smartphones. The aim of this study was to evaluate the craniovertebral angle, head position angle, pain threshold of the sternocleidomastoid and upper trapezius muscles, and presence of depression in heavy smartphone users compared to a control group. Twenty healthy students participated in the study. The participants were recruited from Sahmyook University and were divided into a heavy user group (n=10) and a control group (n=10) according to smartphone addiction proneness. All protocols and procedures were approved by the Institutional Review Board of Sahmyook University (Seoul, South Korea) and all the subjects signed a statement of informed consent. Participants in both groups were assessed for their pain pressure threshold of the sternocleidomastoid and upper trapezius muscles, craniovertebral angle and head position angle, and depression. When comparing the results between the two groups, there were significant differences in the pain threshold of the sternocleidomastoid and upper trapezius muscles, head position angle, and depression (p<.05), but not in the craniovertebral angle. Based on the results, this study shows that heavy smartphone use may produce considerable stresses on the cervical spine, thus changing the cervical curve and pain threshold of the muscles around the neck. Smartphones could also cause negative effects on a person’s psychological status, such as depression. Therefore, individuals should make an effort to look at their phones with a neutral spine and to avoid spending hours hunched over their screens each day.
Crossmodal representation of affective states based on behavioral and physiological data
( Junhyuk Jang ),( Jongwan Kim ) 한국감성과학회 2021 추계학술대회 Vol.2021 No.0
In this study we explored representation of affective states derived from stimuli of multiple modalities. We used the multidimensional scaling (MDS) and classification techniques to decode affective information, and found that representation of emotion is consistent across different modalities.
Junhyuk Jeon,Yong Duk Lee,Jundong Yu 한국분석과학회 2021 학술대회논문집 Vol.2021 No.11
Given the nature of its hypoxic stimulus, cobalt is a potential dope for racehorses. It can cause gene modulation to induce erythropoietin transcription, thus leading to an enhancement in aerobic performance(Emmie N M Ho et al., 2015). Hence it is controlled by the international threshold(urine : 100 ng/mL, plasma : 25 ng/mL). In this study, measurement uncertainties(MU) of the analysis of cobalt(Co) from equine urine and plasma using Inductively Coupled Plasma-Mass Spectrometry(ICP-MS) were evaluated in detail, on the threshold level. Matrix-matched quality controls which are made equivalent to each threshold level were analyzed repetitively(n=10). Uncertainty budget were studied under the bottom-up approach suggested by EURACHEM/CITAC Guide. 5 major sources of MU were specified; uncertainty of standard, calibration curve, use of surrogate matrix(i.e. 0.35% HNO₃), sampling, and dilution. The most dominant contributions were from the use of the surrogate matrix in calibration, and their contributions were 63.3% and 93.3% for urine and plasma, respectively. Bias component of urine appeared to be relatively as small as 0.09%, while for plasma it was as big as 5.88%. Standard MUs from each source were converted into relative MUs and combined. Expanded measurement uncertainty was 2.6 ng/mL in urine and 3.2 ng/mL in plasma, with coverage factor k=2 at 95% level of confidence.