품질경영활동이 창업기업의 경영성과에 미치는 영향

곽승현,이원일,Kwak, Seung Hyun,Lee, Won Il 한국벤처창업학회 2014 벤처창업연구 Vol.9 No.2

This paper's purposes is to study the effects of the strategic support of top management, the activities of quality management, the quality-oriented culture and the organizational citizenship behavior on business performance for Start-ups. In order to settle quality management activitiesa successfully in start-up companies, Concern and support of Top manangement for the quality is important. Although Top management's commitment to a strong, According to the employee's attitude, the quality performance of company may be much different. the quality performance of company that acceptace attitude for quality management is excellent will increase. And business performance will be affected positively. Also when the company has any problems with the quality, the employee's will trying to solve the problem voluntarily is the important factor for business performance. Through this study, the following statistically significant conclusions were drawn. First, If top management supports the resource strategically for the activation of the quality management, The quality and business performance of start-ups will be improved. Second, If the quality management is activated, The quality and business performance of start-ups will be improved. Third, if quality-oriented culture is matured, the quality and business performance of start-ups will be improved. Fourth, if the level of organizational citizenship behavior is getting higher, the quality performance of start-ups will be improved. Fifth, the quality performance has a mediation effect on the relationship between the quality management and business performance. So when strategic support of Top management, quality management, quality-orented culture and OCB are activated in the organization, the quality performance will be higher than before, so that the business performance will be higher too. To improve the quality performance and business performance in start ups, It is needed to understand the quality management in organization, to implement the quality management constantly. And top management should supports the resource strategically and the employee has to do his best to form quality-oriented culture in the company.

청정개발체제 프로젝트에서 추가성의 의미와 사업에 미치는 영향

지바 미치아키(Chiba Michiaki),곽승현(Kwak Seung Hyun) 한국에너지기후변화학회 2006 에너지기후변화학회지 Vol.1 No.2

8-bit Segmented Current Steering 방식의 400MS/s CMOS D/A 변환기의 설계

강병걸(Byeong-Geol Kang),곽승현(Seung-Hyun Kwak),김성진(Sung-Jin Kim),이강윤(Kang-Yoon Lee) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.11

This paper presents design of an 8-bit 1.8 V segmented current steering CMOS digital-to-analog converter (DAC). The DAC has been segmented as 6+2 to achieve good performance. Further, in order to decrease the mismatch, a calibration technique is used. The Experimental result of INL is 0.6 LSB and DNL is 0.5 LSB.

타액-알파아밀라제를 이용한 병원간호사의 직무스트레스 측정

서상혁(Sang Hyeok Seo),곽승현(Seung Hyun Kwak),김형식(Hyung Sik Kim),심희숙(Hee Sook Sim),강진규(Jin Kyu Kang),민병찬(Byung Chan Min) 한국산업경영시스템학회 2016 한국산업경영시스템학회지 Vol.39 No.2

As contemporary society has become more complicated, specialized, and segmented, people are experiencing more diverse types of stress. In particular, while several factors associated with job stress have been examined among nurses, who belong to a professional group, the existing research has made no quantitative assessments of stress that reflect temporal differences in individuals. Therefore, the aim of this study is to understand the effects of job stress on alpha-amylase with regard to the working hours of nurses, to assess the variations in jobs stress over time, and provide basic data to improve the quality of nursing services. Ninety nurses working in three shifts in general, emergency, and intensive care wards of a university hospital in D City participated in this study. Salivary alpha-amylase (SAA) was extracted and analyzed at two-hour intervals from 07:00 to 15:00 from nurses on the day shift and from 23:00 to 07:00 from those working the night shift. The SAA level was highest between 23:00 and 01:00 for nurses in general wards (mean±S.D. 39.00±14.88) and between 11:00 and 13:00 for those in both intensive care units and emergency wards (mean ± S.D. 67.50 ± 62.93 and mean ± S.D. 39.67±35.96, respectively). The characteristic variation in SAA was significant between 23:00 and 01:00 (p < 0.01) and for those in their fifties or older (p < 0.01). The activation ratio of alpha-amylase, a stress reactant, showed an increase when the sympathetic nervous system was activated by mental stress; in addition, job stress was manifested with the effect of awakening at different time segments and at different ages among the nurses. With the aim of raising the level of service based on the nurses maintaining their mental health, it is necessary to focus sharply on the time segment for critical control and to conduct repetitive studies to determine the divisions of eustress critical values as well as to expand the population.

자동차 실내 열쾌적성 개선을 위한 통풍시트의 쾌적온도 분석

인충교 ( Chung-kyo In ),곽승현 ( Seung-hyun Kwak ),김창훈 ( Chang-hoon Kim ),김규범 ( Kyu-beom Kim ),조형석 ( Hyung-seok Jo ),서상혁 ( Sang-hyeok Seo ),명태식 ( Tae-sik Myung ),민병찬 ( Byung-chan Min ) 한국감성과학회 2020 감성과학 Vol.23 No.4

자동차 고급화 추세에 따라 소비자의 차량 실내 환경에 대한 관심이 증가함에 따라 자동차의 기본적 성능뿐만 아니라 실내 쾌적성 향상에 관심이 증대되고 있다. 또한 자동차 실내 쾌적성에 대한 연구는 운전자에게 만족을 제공하는데 그치지 않고, 운전자의 불쾌지수 및 스트레스를 낮추어서 교통사고의 위험을 줄이는데 기여할 수 있기 때문에 매우 중요한 연구 주제이다. 따라서 본 연구에서는 운전자의 뇌파측정을 통해 통풍시트의 온도변화에 따른 쾌적감 변화와 쾌적온도를 알아보고, 온도변화에 따른 남녀간 쾌적감에 대한 차이를 탐색하고자 하였다. 연구결과 첫째 통풍시트의 온도가 22℃, 25℃, 28℃에서 각각의 실험군을 비교한 결과 28℃보다 25℃에서 통계적으로 유의하게 쾌적감이 더 높게 나타났다. 둘째 통풍시트 온도 변화에 따른 남녀간 쾌적감에 대한 실험결과 남성과 여성이 온도에 따라 느끼는 쾌적감은 통계적으로 유의한 차가 없는 것으로 나타났다. 향후 자동차의 실내온도와 통풍시트의 온도 변화에 따른 운전자의 쾌적감 변화를 파악하여 상관관계를 분석한다면, 운전자의 쾌적성을 확보하여 휴먼에러로 인한 교통사고를 낮출수 있을 뿐만 아니라 자동차의 전기에너지의 사용량을 줄일 수 있을 것이다. As the number of automobile registrations increases and luxury expectations grow, consumers are increasingly interested in indoor environment of vehicles. Therefore, manufacturers have an increasing interest in improving the indoor comfort as well as automobile performance. Research on indoor automobile comfort can help manufacturers increase driver satisfaction and reduce driver stress and discomfort, thereby reducing the risk of traffic accidents. Using electroencephalogram (EEG) measurements, we investigated the change in comfort and comfortable temperature according to the ventilating seat temperature change for both men and women. Results showed that the sensation of comfort was statistically significantly higher at 25°C than at 28°C. Secondly, there was no statistically significant difference in temperature-based comfort feeling between male and female subjects. In the future, if the correlation between the driver's comfort feeling and the change in ventilating seat temperature is analyzed, it is possible to reduce traffic accidents caused by human error and reduce the electric energy consumption of the automobile.

사출성형 공정에서 유발되는 냄새의 후각 감성 특성

류영재(Young-Jae Ryu)김보성(Bo-Seong Kim),이예현(Ye-Hyun Lee),곽승현(Seung-Hyun Kwak)서상혁(Sang-Hyeok Seo),류태범(Tae-Beum Ryu),민병찬(Byung-Chan Min) 한국산업경영시스템학회 2016 한국산업경영시스템학회지 Vol.39 No.4

The purpose of this study was to explore olfactory sensitivity of odors from injection molding processing. To do this, the experiment was carried out in an injection molding factory, and participants were exposed to the environment where odor-substances (Formaldehyde, Benzene, Toluene, Ethylbenzene, Xylene, Styrene) exist. In addition, we used the subjective scale using semantic adjectives as an olfactory sensitivity. As a result, the assessment structure of olfactory sensitivity was composed of eight factors (irritant, thermal, tense, unique, like-dislike, active, stable, masculine), and the main factor which was irritant characteristics explained 20% of the total olfactory sensibility. These results suggested that odors from injection molding processing would cause more negative emotional responses than the flavor which is mainly used in olfactory sensitivity. This study, as a basic study of the improvement in a factory environment for the efficiency of work, has limits in that it was conducted to the extent of identifying the olfactory sensitivity structure of those who were at a laboratory and who were exposed to the environment of odor substance induced in the injection molding processing. Therefore, for the method of removing malodorous substance, the effect of materials which can neutralize it, and the comparison of a direct performance in the environment where negative sensitivity structure exists, a series of studies which aim to improve the environment of injection molding factories, such as performance assessment in the environment of a factory and an office need to be conducted. It is expected that when these studies are put together, the improvement guidelines will be provided as a type that can maximize the effectiveness of work in the factory environment where injection molding processing is done.

지하철 광고의 부정적 정서자극과 청각자극의 동시자극이 자율신경계에 미치는 영향 연구

송치영(Chi-Young Song),서상혁(Sang-Hyeok Seo),곽승현(Seung-Hyun Kwak),이석환(Seok-Hwan Lee),민병찬(Byung-Chan Min) 인문사회과학기술융합학회 2018 예술인문사회융합멀티미디어논문지 Vol.8 No.8

현대사회의 대표적 교통수단인 지하철을 이용할 때마다 지하철 이용객은 각종 부착물에 대한 내외적 요인에 의하여 육체적 정신적인 저항에 항시 노출된다. 이용자 만족도를 높이기 위한 여러 교통정책 개선 등이 이루어지고 있으나 실효성 제고를 위하서는 이용자가 체감하는 부정적 저항을 적게 받는 것이 중요한 과제라고 할 수 있을 것이다. 그러나 기존의 이용자 만족도 평가를 위해서는 인식에 기초를 둔 정성적 방법에 의한 연구가 대부분이다. 이러한 정성적 방법에 의한 조사는 객관적이고 정량적인 파악에 한계가 있으며, 회피효과에 대한 관계도 파악하는데 한계가 있다. 따라서 본 연구에서는 지하철 이용객의 부정적 이미지가 어떻게 전달되고 인식되는지를 알아보고 부정적 정서자극과 청각자극의 동시자극이 부정적 이미지에 대한 회피효과가 있는지를 규명하고자 하였다. 실험은 IAPS의 부정적 이미지와 정서적, 심리적으로 안정감을 주는 클래식 음악을 동시에 제시하였고, 심리적 부하지표로 교감신경계 활성도(LF/HF), 총량적 지표로 RR triangular로서 심박변이도(HRV)와 자율신경계 반응의 피부 전기 반응(GSR: Galvanic Skin Response)에서 SCL(Skin Conductance Level)의 변화를 동시에 측정하여 부정적 정서자극에 대한 회피효과가 어떠한 영향을 미치는지 특성을 분석하였다. 연구결과 Control(안정상태)과 Audio-Visual syimulus(자극)간에 HRV, GSR 모두 자극전후에 유의차 (p<0.05)를 보이며 증가하였다. 이 연구결과는 부정적 이미지에 노출되어 각성상태에서는 청각자극으로 인한 마스킹 효과가 나타나지 않음을 나타내는 것으로 실제 지하철의 이용객을 대상으로 정서반응에 있어서 만족도를 높이기 위한 방법으로 시각적 이미지의 지하철 광고에 대한 제도개선과 정비를 통해 효과적인 시스템을 구축할 필요가 있으며, 부정적 이미지의 매체를 지양하기 위한 요인들을 고려해야 함을 시사한다. Whenever subway users use a subway, a typical means of transportation of modern society, they are always exposed to the physical, mental resistance by the internal and external factors of the various attachments. Although the improvement in various traffic policies has been made for increasing the user satisfaction, it is an important task that for effectiveness, users receive less negative resistance which they feel. However, most of existing studies have been conducted with the qualitative method based on the recognition for user satisfaction evaluation. The research with this qualitative method has a limit in grasping objectively and quantitatively, and one in grasping the relationship with avoidance effect. Therefore, this study was aimed to find out how the negative images were delivered and recognized by subway users, and to specify whether or not the simultaneous stimulation of the negative emotional stimulus and auditory stimulus has an avoidance effect on the negative images. In the test, the negative images of IAPS and the classical music, which gives stability emotionally and psychologically, were presented at the same time, and by measuring sympathetic nervous system activity(LF/HF) as a psychological load index, heart rate variability(HRV) as RR triangular(an aggregate index), and the change in SCL(Skin Conductance Level) in galvanic skin response(GSR: Galvanic Skin Response) of automatic nervous system simultaneously, the traits were analyzed for how the avoidance effect affected the negative emotional stimulus. As a result of study, both HRV and GSR increased, showing a significant difference(p<0.05) before and after stimulation between Control(stable state) and Audio-Visual stimulus. This study result shows that there is no masking effect due to audio stimulus in an awakening state when we are exposed to the negative images. It suggests that as a method to increase the satisfaction in emotional response for subway users actually, the effective system needs to be established through the improvement and maintenance of subway advertisement system of the visual image, and that the factors for avoiding the media of negative images should be considered.

근적외선 분광법을 이용한 정신적 스트레스에 의한 뇌 혈류 신호의 변화에 관한 연구

여선구(Sun-Gu Yeo),서상혁(Sang-Hyeok Seo),곽승현( Seung_Hyun Kwak),송치영(Chi-Yong Song),이석환(Seok-Hwan Lee),민병찬(Byung-Chan Min) 인문사회과학기술융합학회 2018 예술인문사회융합멀티미디어논문지 Vol.8 No.8

현대인은 다양한 원인에 의해 각종 질병에 노출되어 있다. 이런 결과로 건강에 대한 관심은 지속적으로 높아지고 있으며, 정기 건강검진이 의무화 되었다. 따라서 질병을 측정하기 위한 설비는 다양해지고 복잡해지고 있다. 근적외선 분광법은 인체에 무해하고, 장비 및 검사 비용이 저렴하다. 또한 간단하고 빠른 측정 시간 등의 장점에 때문에 뇌 질환을 측정하는 설비 중 가장 활발하게 개발이 진 행되고 있다. 본 연구에서는 정신적 스트레스에 대한 대뇌 혈류신호변화를 근적외선 분광법을 이용하여 측정하였다. 연구 대상은 신체 건강한 20대와 30대 남녀 10명으로 실행하였다. 1차 안정기와 정신적 부하기의 혈류신호변화는 신뢰수준 5%에서 P<0.001로 유의차가 인정되었다. 정신적 스트레스는 심박 변이, 전기피부반응, 혈류 변화 등 신체적인 변화를 일으킨다. 차기 연구는 근적외선 분광법 장비 개발을 위해 스트레스, 각성, 수면, 피로 상태 등 일상 생활의 다각적인 방향으로 진행될 필요가 있다. Modern people are exposed to various diseases by various causes. As a result, interest in health continues to increase and regular health checkups become mandatory. Thus, facilities for measuring disease are becoming more diverse and complex. Near-infrared spectroscopy is harmless to human body and equipment and inspection cost are low. In addition, because of the advantages such as simple and quick measurement time, development of the equipment for measuring brain diseases is proceeding most actively. In this study, cerebral blood flow signal changes of mental stress were measured by near infrared spectroscopy. The study was conducted by 10 men and women in their 20s and 30s who were physically fit. The changes in the blood flow signal of the first ballast and mental deficit were significantly different from the confidence level of 5% to P <0.001. Mental stress causes physical changes such as heart rate variability, electrical skin reactions, and blood flow changes. Future research needs to be carried out in various directions of daily life such as stress, arousal, sleeping, fatigue state in order to develop NIR spectroscopy equipment.

Effect of Color and Color Temperature on the Attention in the Residential Space by the Analysis of EEG and ECG

Young Jung Kim(김영중),Doo Hwan Ji(지두환),Young Jae Ryu(류영재),Sung Hyun Kim(김성현),Sang Hyeok Seo(서상혁),Seung Hyun Kwak(곽승현),Jin Kyu Kang(강진규),Byung Chan Min(민병찬) 한국산업경영시스템학회 2017 한국산업경영시스템학회지 Vol.40 No.1

This study is aimed to find out whether there is difference in the physiological change of a human body according to the illumination and color of interior space or not and to specify the effect of the condition of illumination and color, respectively on the attention. In order to do so, White and Green were selected for colors and 4,000k, 5,000k, and 6000k were done for color temperature, and then attention was identified. Examining the results, the more color temperature increased, the more attention improved (P < 0.05), and in the case of EEG, α wave decreased while performing the task of attention (P < 0.01), and β wave decreased more in Green than White in color condition, and it increased more in 4,000k than 5,000k and 6,000k (p < 0.05) in color temperature condition. To sum up, color condition didn t contribute to the attention much, in the case of color temperature, when it is 6,000k, it is judged that it helped to improve attention. It is considered that relaxation contributed to improving attention, as β wave and sympathetic nerve decreased in 6,000k (p < 0.05). It is judged that the relaxation of tensions which happened due to a beta wave and the reduction of sympathetic nervous system activity in 6,000k, a condition of high color temperature, contributed to the improvement of concentration. In further researches, it is intended that a test will be conducted for the subjects of different ages, and the correlation between color temperature and color stimulation and the influence of them on human body would be observed in subdivided, various test conditions through various color temperature and color stimulation.

액체 Silicone과 Paraffin의 주입후 나타난 색전현상의 증례

곽승호,이삼용,조백현,임기영 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.5

The infection of liquid silicone or paraffin for cosmetic purposes has been an unfavorable method with such complications as development of granulomas, migration of the foreign body, inflammation, ulceration, embolic phenomena and etc. However, these materials have been used by some unauthorized people for augmentation os the soft tissue in such areas as the face and breasts for they can easily transform the body contour in a short period and are inexpensive to do so,. We experienced the unusual cases of visual loss and respiratory difficulty after injection of liquid silicone or paraffin subcutaneously in the face and chest. Three patients lost their vision immedately after injection of these materials in the face, and one patient underwent respiratory difficulty following injection of liquid silicone in the chest. Among the three facial cases, one was observed without treatment, the other was treated by secondary intention with antibiotics, and the third case was operated on to remove the foreign body from the nose. The saddle nose deformity after removal of nasal foreign body was treated by means of insertion temporalis fascia-wrapped silastic implant. Visual loss was irreversible. Dyspnea of the chest case disappeared after two weeks of steroid therapy. The cause of these disastrous complications was believed to be occlusion of vessels with the emboli inadvertently injected into the vascular channel.