• 동의생리병리학회지
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• 제16권3호
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• pp.421-423
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• 2002

Senile involution is divided into two classes : physiological senile involution and pathological senile involution. Physiological senile involution is a natural process of vital action of decreasing Vital Essence and Energy in kidney that is a necessary physiological phenomenon. Pathological senile involution is an evidence of impairment of True Qi of internal human body. Human vital action is a changing process of life, senility, sickness, and death. In other words, this is a natural process of being full and decreasing of Vital Essence and Energy in kidney, and True Qi of human body decides this process. The Vital Essence and Energy in kidney vary, and they are influenced and restricted by various elements. The time of a senile involution varies individually. Human body protects and makes efforts not to leak out True Qi in effective ways. We can postpone a limit of time of physiological senile involution phenomenon. This is called 'Health Preservation' - resistance against senile involution.

• Journal of Ginseng Research
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• 제11권2호
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• pp.101-110
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• 1987

인삼(Panax ginseng C.A. Meyer) 엽소병에서 chorophyll의 bleaching 현상에 대한 생리적 반응기작을 조사, 분석한 결과 chorophyll의 bleaching 현상은 singlet oxygen ($^1O_2$)에 의한 photooxidation 과 catalase와 peroxidase의 inactivation에 의한 $H_2O_2$의 autooxidation이었다. Chorophyll의 bleaching 현상에 원인으로 추리된 $H_2O_2$를 농도별로 인삼잎 절편에 처리하였던 바, chorophyll의 함량과 chorophyll의 흡수스펙트럼은 자연광 처리시 유발된 bleaching 현상과 일치하였으며, saponin 첨가로 인하여 bleaching 현상은 현저히 촉진되었다.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.760-767
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• 2022

This paper introduces alert fatigue and presents methods to measure alert fatigue by using physiological signals. Alert fatigue is a phenomenon that which an individual is constantly exposed to frequent alarms and becomes desensitized to them. Blind spots are one leading cause of struck-by accidents, which is one most common causes of fatal accidents on construction sites. To reduce such accidents, construction equipment is equipped with an alarm system. However, the frequent alarm is inevitable due to the dynamic nature of construction sites and the situation can lead to alert fatigue. This paper introduces alert fatigue and proposes methods to use physiological signals such as electroencephalography, electrodermal activity, and event-related potential for the measurement of alert fatigue. Specifically, this paper presents how raw data from the physiological sensors measuring such signals can be processed to measure alert fatigue. By comparing the processed physiological data to behavioral data, validity of the measurement is tested. Using preliminary experimental results, this paper validates that physiological signals can be useful to measure alert fatigue. The findings of this study can contribute to investigating alert fatigue, which will lead to lowering the struck-by accidents caused by blind spots.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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• pp.953-957
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• 2009

비행 시뮬레이션은 항공기와 같은 비행용 장비를 조종하는 훈련이나 탑승체험 등을 목적으로 실제 비행 상황을 흉내 내는 것을 의미한다. 이와 같은 기존의 비행 시뮬레이션은 비행기의 조종과 직접적으로 관련된 시각적이고 물리적인 제어에 국한된 연구 개발에 치중하여 각종 게임이나 시뮬레이터 등에 활용하였다. 그러나 비행 시뮬레이션에 조종사의 생리적 현상을 고려하여 적용한 현실적인 연구들은 거의 없었다. 그러므로 본 논문에서는 조종사의 블랙아웃과 레드아웃 현상을 가정한 비행 시뮬레이션을 간단히 구현해보고, 발전 가능성을 가늠해본다.

• Environmental Analysis Health and Toxicology
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• 제23권2호
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• pp.67-77
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• 2008

It has been observed that the linear relationship between the logarithm of bioconcentration factor (log BCF) of highly hydrophobic chemicals and their log $K_{ow}$ breaks when log $K_{ow}$ becomes greater than 6.0. Consequently, super hydrophobic chemicals were not thought to cause baseline toxicity as a single compound. Researchers often call this phenomenon as "hydrophobicity cutoff" meaning that bioconcentration or corresponding baseline toxicity has a certain cutoff at high log $K_{ow}$ value of hydrophobic organic pollutants. The underlying assumption is that the increased molecular size with increasing hydrophobicity prohibits highly hydrophobic compounds from crossing biological membranes. However, there are debates among scientists about mechanisms and at which log $K_{ow}$ this phenomenon occurs. This paper reviews three hypotheses to explain observed "cutoff": steric effects, kinetic or physiological limitations, and chemical activity cutoff. Although the critical molecular size that makes biological membranes not permeable to hydrophobic organic chemicals is uncertain, size effects in combination with kinetic limitation would explain observed non-linearity between log BCF and log $K_{ow}$. Chemical activity of hydrophobic chemicals generally decreases with increasing melting point at their aqueous solubility. Thus, there may be a chemical activity cutoff of baseline toxicity if there is a critical chemical activity over which baseline effects can be observed.

• 디지털융복합연구
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• 제20권4호
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• pp.499-512
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• 2022

본 연구의 목적은 먼저 유니섹스와는 그 개념과 차원이 다른 젠더리스 개념을 알아보고, 현대 패션에서 젠더리스 복식의 경향을 파악하며 그 특성을 살펴봄으로써 현대 패션에서 나타나는 젠더리스 복식을 통해 현대 패션에 나타난 젠더리스 경향과 특징을 짚어보았다. 이를 위하여 본 연구에서는 국내·외 문헌, 패션 웹사이트를 통해 이론적 고찰과 컬렉션 사례 분석을 진행하였다. 이를 바탕으로 현대 컬렉션에서 젠더리스 성향이 강한 디자인을 분석하여 컬렉션에 표현된 젠더리스 복식의 특성을 도출하였다. 그 결과 현대 컬렉션에 나타난 젠더리스 패션의 특성으로 혁신성, 반항성, 미래 지향성의 세 가지를 도출할 수 있었다. 또한, 현대의 젠더리스 패션은 단순히 생리적인 성별에 따른 패션이 아나라 정신적 성별과 생리적인 성별에 대한 다양한 욕구를 내포함으로써 이는 성의 구분이 모호해지는 현재의 사회적 현상과 서로 상호작용하여 나타남을 알 수 있었다. 하나의 문화 현상과 유행이 된 젠더리스 패션를 이해하고 연구하고자 한 본 연구를 기반으로 앞으로 향후 젠더리스 복식과 관련한 많은 후속 연구가 진행되기를 바라는 바이다.

• 한국가시화정보학회지
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• 제9권3호
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• pp.65-70
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• 2011

Three major physiological functions of nose can be described as air-conditioning, filtering and smelling. Detailed knowledge of airflow characteristics in nasal cavities is essential to understanding of the physiological and pathological aspects of nasal breathing. In our laboratory, a series of experimental investigations have been conducted on the airflows in normal and abnormal nasal cavity models by means of PIV under both constant and periodic flow conditions. In this work, more specifically experimental and numerical results on the surgically modified inferior turbinate model were presented. With the high resolution CT data and a careful treatment of the model surface under the ENT doctor's advice yielded quite sophisticated cavity models for the PIV experiment. Physiological nature of the airflow was discussed in terms of velocity distribution and vortical structure for constant inspirational flow. Since the inferior and middle turbinate are key determinants of nasal airflow, the turbinectomy obviously altered the main stream direction. This phenomenon may cause local changes in physiological function and the flow resistance.

• 한국콘텐츠학회논문지
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• 제10권8호
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• pp.168-176
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• 2010

영상을 주의 깊게 시청하는 관객은 보이는 영상의 성격에 따라 여러 심적 변화를 경험한다. 기쁨, 슬픔, 놀람 등 관객이 느낄 수 있는 다양한 감정 상태는 심리학에서 많이 활용되는 제임스 러셀(James Russell)이 정의한 감정 원형모형을 통해 정리된다. 관객이 느낄 수 있는 감정들 중에서도 특히 지그문트 프로이트(Sigmund Freud)가 언급한 언캐니(uncanny)는 기존의 명료한 정서적 개념들의 틈새에 존재하는 첨예한 중간자로 대변된다. 언캐니 현상은 비윤리적으로 인식되는 영상을 시청하는 관객이 보편적으로 느끼는 불쾌한 부분이 쾌로 수용되는 상태, 즉 사회적 금기에 대해 긍정적인 상태이기 때문에 이는 사회윤리적인 해석과 더불어 명확한 수리적 분석이 후행될 때 비로소 첨예한 심리상태로서 분석 가치를 지닌다. 따라서 본 논문에서는 감정 원형모형과 언캐니 상태를 분석하고, 관객의 언캐니 상태에 관한 가설을 설립하여 ECG(Electronic Cardiogram)와 GSR(Galvanic Skin Response) 신호 측청과 같은 생체신호 실험을 수치화한 결과를 러셀의 감정 원형모형을 기반으로 분포, 거리, 시간 등을 분석하는 방향으로 진행된다.

• 산업경영시스템학회지
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• 제41권4호
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• pp.1-8
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• 2018

Whole body fatigue detection is an important phenomenon and the factors contributing to whole body fatigue can be controlled if a mathematical model is available for its assessment. This research study aims at developing a model that categorizes whole body exertion into fatigued and non-fatigued states based on physiological and perceived variables. For this purpose, logistic regression was used to categorize the fatigued and non-fatigued subject as dichotomous variable. Normalized mean power frequency of eight muscles from 25 subjects was taken as physiological variable along with the heart rate while Borg scale ratings were taken as perceived variables. The logit function was used to develop the logistic regression model. The coefficients of all the variables were found and significance level was checked. The detection accuracy of the model for fatigued and non-fatigues subjects was 83% and 95% respectively. It was observed that the mean power frequency of anterior deltoid and the Borg scale ratings of upper and lower extremities were significant in predicting the whole body fatigued when evaluated dichotomously (p < 0.05). The findings can help in better understanding of the importance of combined physiological and perceived exertion in designing the rest breaks for workers involved in squat lifting tasks in industrial as well as health sectors.

• 대한한의학회지
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• 제18권2호
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• pp.5-14
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• 1997

This paper documents a study of the physiology of the lung. The aim of this paper is to better comprehend the physiological function of lung. To this end, the relationship between the physiological function of the lung and the characteristics of the 'Keum Un Qi Hua'(金運氣化), and the functional changes of the lung and its surrounding physiological systems have been studied in their relationship to the concept of the organism as a whole. The results of this study are as follows; The function of the lung is comprehended as corresponding to the 'Keum Un Qi Hua'. In visceral phenomenon, the lung has specific relations with the large intestine(大腸), nase(鼻), skin and hair(皮毛), sweat gland(汗孔), nasal mucus(涕), spirit(氣魄), grief and melancholy(憂 悲), the lung channel of hand-taiyin(手太陰肺經), the large intestine channel of hand-yangming(手陽明大腸經). This is called ‘the physiological systems of the lung’, and because these mutual relations reflect the functional changes of the lung, it is applied as the elementary knowledge to diagnose and treat the lung. For instance, a deficiency of the 'Qi‘ of the lung brings on an unconsolidated defending energy whose manifestations are sweating spontaneously as well as being susceptible to the common cold due to a diability in fighting against external pathogenic factors. Invasion of the lung by external pathogenic factors blocks the movement of the 'Qi' of the lung, which results in nasal obstraction. watery nasal discharge and a hyposmia. So the physiological functions and pathological changes of the lung can be determined by observing ’the physiological systems of the lung‘ based on the precepts of oriental medicine. As a result, the function of the lung is to be understood based on the characteristics of the 'Keum Un Qi Hua'. Furthermore we can know that the physiological systems of the lung mirrors the functional changes of the lung.