• 한국산업보건학회지
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• 제24권2호
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• pp.208-218
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• 2014

Objectives: The major objective of this study was to develop and validate a tier 1 exposure model utilizing worker exposure monitoring data and characteristics of worker activities routinely performed at construction sites, in order to estimate worker exposures without sampling. Methods: The Registration, Evaluation, Authorization and Restriction of Chemicals(REACH) system of the European Union(EU) allows the usage of exposure models for anticipating chemical exposure of manufacturing workers and consumers. Several exposure models have been developed such as Advanced REACH Tools(ART). The ART model is based on structured subjective assessment model. Using the same framework, a tier 1 exposure model has been developed. Worker activities at construction sites have been analyzed and modifying factors have been assigned for each activity. Korean Occupational Safety and Health Agency(KOSHA) accrued work exposure monitoring data for the last 10 years, which were retrieved and converted into exposure scores. A separate set of sampling data were collected to validate the developed exposure model. These algorithm have been realized on Excel spreadsheet for convenience and easy access. Results: The correlation coefficient of the developed model between exposure scores and monitoring data was 0.36, which is smaller than those of EU models(0.6~0.7). One of the main reasons explaining the discrepancy is poor description on worker activities in KOSHA database. Conclusions: The developed tier 1 exposure model can help industrial hygienists judge whether or not air sampling is required or not.

• 한국전기전자재료학회논문지
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• 제35권4호
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• pp.377-385
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• 2022

Thermal batteries are specialized as primary reserve batteries that operate when the internal heat source is ignited and the produced heat (450~550℃) melts the initially insulating salt into highly conductive eutectic electrolyte. The heat source is composed of Fe powder and KClO₄ with different mass ratios and is inserted in-between the cells (stacks) to allow homogeneous heat transfer and ensure complete melting of the electrolyte. An ideal heat source has following criteria to satisfy: sufficient mechanical durability for stacking, appropriate heat calories, ease of combustion by an igniter, stable combustion rate, and modest peak temperature. To satisfy the aforementioned requirements, Fe powder must have high surface area and porosity to increase the reaction rate. Herein, the hydrothermal and spray drying synthesis techniques for Fe powder samples are employed to investigate the physicochemical properties of Fe powder samples and their applicability as a heat source constituent. The direct comparison with the state-of-the-art Fe powder is made to confirm the validity of synthesized products. Finally, the actual batteries were made with the synthesized iron powder samples to examine their performances during the battery operation.

• International Journal of Advanced Culture Technology
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• 제5권3호
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• pp.24-34
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• 2017

Nail art is a kind of nail painting or decoration that adds to the beauty. Throughout making nail art, the worker was on a dusty operation with the smoothing of chemicals and nails. People working at nail shops not only use a variety of chemicals, but also experience a lot of fine powder during the process of nail trimmings. While drying the chemical adhesive, the workers often complain of eye, nose and throat discomfort. In addition, the acrylic brush is characterized by a lot of smell when washed with washing solution. Also nail art workers directly influence the worker's breathing through the work done by placing the guest's hands in a work space called a nail table. Chemical ingredients used in nail art procedures include acetone, ethyl acetic acid, toluene, butyl acetic acid, glue, and top coating of nail varnishes. Prolonged inhalation of these substances may cause dizziness, vomiting, as well as impaired respiratory system. The purpose of this study is to investigate the respiratory symptoms of nail shop workers who are likely to be affected by work in nail shop and to find out which factors have the greatest influence if they have respiratory symptoms. Therefore this study is to provide basic data on the health management system of people engaged in nail shop and to develop health education program. For this study, the data collection was collected on July 7, 2017 for the nail shop workers attending the nail art trend seminar held in Gwangju, in Korea. The data were all 236. However, except for the poor data, 208 data were used for the final analysis. The questionnaire consisted of 30 in general questions, questions about self-efficacy in 24 questions. elf-efficacy measuring tool developed by A.Y, Kim, I. Y, Park(2001). The self-efficacy questionnaire consists of 24 items and is self-reported 7-point Likert scale. The reliability of this tool was cronbach alpha = .934.The collected data were analyzed using spss 18.0. Information of Research participant performed frequency analysis. To examine the effects of personal characteristics on self-efficacy, $X^2$ analysis was conducted. And also $X^2$ analysis was conducted to analyze the coughing symptom appearance according to individual and environmental factors. A hierarchical regression analysis was used to determine which of the personal and environmental factors influenced cough symptoms.

• 대한원격탐사학회지
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• 제40권1호
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• pp.115-122
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• 2024

Multi-object tracking (MOT) is a vital component in understanding the surrounding environments. Previous research has demonstrated that MOT can successfully detect and track surrounding objects. Nonetheless, inaccurate classification of the tracking objects remains a challenge that needs to be solved. When an object approaching from a distance is recognized, not only detection and tracking but also classification to determine the level of risk must be performed. However, considering the erroneous classification results obtained from the detection as the track class can lead to performance degradation problems. In this paper, we discuss the limitations of classification in tracking under the classification uncertainty of the detector. To address this problem, a class update module is proposed, which leverages the class uncertainty estimation of the detector to mitigate the classification error of the tracker. We evaluated our approach on the VisDrone-MOT2021 dataset,which includes multi-class and uncertain far-distance object tracking. We show that our method has low certainty at a distant object, and quickly classifies the class as the object approaches and the level of certainty increases.In this manner, our method outperforms previous approaches across different detectors. In particular, the You Only Look Once (YOLO)v8 detector shows a notable enhancement of 4.33 multi-object tracking accuracy (MOTA) in comparison to the previous state-of-the-art method. This intuitive insight improves MOT to track approaching objects from a distance and quickly classify them.

• International Journal of Advanced Culture Technology
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• 제9권4호
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• pp.135-144
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• 2021

In an environment that places a priority on morality, authentic leadership is becoming increasingly important. Chinese enterprises are putting a lot of effort into improving their employees' psychological safety and positive psychological capital (PsyCap). This study examines the influence of authentic leadership on positive PsyCap and psychological safety, as well as the influence of positive PsyCap on psychological safety in China. It also examines whether positive PsyCap plays a mediating role. Authentic leadership has a positive effect on both positive PsyCap and psychological safety. Positive PsyCap also has a positive effect on psychological safety. Moreover, positive PsyCap had a mediation effect on the relationship between authentic leadership and psychological safety. This result means that an authentic leadership style can stimulate employees' psychological capital, make the staff more confident and promote optimistic attitudes, hopeful minds, and plenty of other positive psychological states. At the same time, it promotes the psychological safety of employees in Chinese art enterprises. The significance of this study is that it investigates the effects and processes of authentic leadership on psychological safety and positive PsyCap in Chinese art enterprises. The implications of this research bridge a theoretical gap in the field, and provide feasible suggestions and guidance for development in the discipline. Enterprises should attach importance to the selection, cultivation, and appointment of authentic leaders. They must also pay attention to trends in employee psychological safety and positive PsyCap.

• 문화기술의 융합
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• 제9권2호
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• pp.221-226
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• 2023

지구 환경에 피해를 주는 인간행위들을 바로 잡지 못하여 생태적 재앙이 지속적으로 확대되어 갈 가능성을 줄이기 위하여, 과연 예술은 인간이 자연을 이해하고 자연과 상호작용하는 방식을 바꿀 수 있을까? 지구에서 환경적 정의와 삶의 지속가능성을 실현하는 예술적 방법론은 무엇일까? 본고는 이러한 질문들의 답을 찾아보고자 한다. 지구 환경을 바라보고 느끼고 이해하고 행동하는 방법을 찾는, 즉 지구 환경에 대한 지향의 방식을 고민하는 과정은 많은 인간적 산물이 자연을 생명의 원천이 아닌 착취의 자원으로 대했던 역사를 비판적으로 사유하게 할 것이다. 이러한 의지를 가지고 본 논문은 '환경예술 운동의 선구자'로 불리는 해리슨 스튜디오의 생태예술에 주목한다. 본론에서는 해리슨 스튜디오의 주요한 프로젝트를 분석하여 생태학적 함의와 미학적 전략을 찾는다. 특히 대화적 방법론에 초점을 둠으로써, 해리슨 스튜디오가 펼친 다양한 협업적 실천의 의의를 제시한다. 그리하여 그들이 생태예술의 가치에 대한 실제적인 경험과 이해의 폭을 확장할 수 있는 데 기여하였을 뿐만 아니라, 어떤 획일적인 교환의 규칙에 한정되지 않고 상호 간에 연결되고 중첩된 인식적 차원을 끊임없이 생산해 냄으로써 생태학적 의식의 방향성을 다시 돌아보게 하는 힘을 지니고 있음을 논증한다.

• International Journal of Advanced Culture Technology
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• 제11권3호
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• pp.172-181
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• 2023

Dunhuang murals are one of the most outstanding achievements in the art of traditional grotto painting in China, and are known as a "Wall Museum". As a representative of the heyday of Dunhuang murals, an in-depth exploration of Dunhuang murals from the perspective of color will help researchers understand the laws and connotations of color in Dunhuang murals during the Tang Dynasty and fully grasp the art of Dunhuang murals. The color system of the traditional Chinese "Five colors" concept expresses the cultural attributes and emotions of the Chinese people and has distinctive national characteristics. This thesis provides a theoretical grasp of the traditional Chinese "Five colors" view of color system, the Dunhuang murals of the Tang Dynasty, and the color configuration of the color composition principles, and uses the modern design principles of color composition to conduct an in-depth analysis of the configuration of the Dunhuang murals' use of color. Explore the unique characteristics of Tang Dynasty Dunhuang murals, and help modern designers master richer color application techniques by learning from and studying the harmonious patterns of Dunhuang murals to provide a new path for the dissemination of excellent Chinese traditional culture.

• 수산경영론집
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• 제46권3호
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• pp.103-118
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• 2015

The purpose of this paper is to discuss possibilities of applying growth curve models, such as Logistic, Log-Logistic, Log-Normal, Gompertz and Weibull, to three specific technology areas of Fishery Science and Technology in the process of measuring their technology level between Korea and countries with the state-of-the art level. Technology areas of hazard control of organism, environment restoration, and fish cluster detect were selected for this study. Expert panel survey was conducted to construct relevant panel data for years of 2013, 2016, and a future time of approaching the theoretical maximum technology level. The size of data was 70, 70 and 40 respectively. First finding is that estimation of shape and location parameters of each model was statistically significant, and lack-of-fit test using estimated parameters was statistically rejected for each model, meaning all models were good enough to apply for measuring technology levels. Second, three models other than Pearl and Gompertz seemed very appropriate to apply despite the fact that previous case studies have used only Gompertz and Pearl. This study suggests that Weibull model would be a very valid candidate for the purpose. Third, fish cluster detect technology level is relatively higher for both Korea and a country with the state-of-the-art among three areas as of 2013. However, all three areas seem to be approaching their limits(highest technology level point) until 2020 for countries with the state-of-the-art. This implies that Korea might have to speed up her research activities in order to catch up them prior to 2020. Final suggestion is that future study may better apply various and more appropriate models respectively considering each technology characteristics and other factors.

• 문화기술의 융합
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• 제8권4호
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• pp.297-302
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• 2022

디지털 공간에 익숙한 동시대 관람자들은 자기표현 욕구를 드러내며 의사표현 도구로 음성, 텍스트와 제스처를 많이 이용한다. 본 연구의 목적은 발화한 관람자의 내러티브를 관람자의 모습을 이용하여 콜라주 형식으로 표현하고, 관람자의 움직임에 의한 스토리를 재생산하고 확장하는 인터랙티브 아트의 창작이다. 제안된 인터랙티브 아트는 관람자로부터 획득한 음성, 영상 정보를 텍스트 콜라주로 시각화하고, 제스처 정보와 자연스러운 사용자 인터페이스(Natural User Interface)를 이용하여 쉽고 간편하게 실시간으로 상호작용하며 개인화된 감정을 표현할 수 있도록 한다. 관람자로부터 획득한 세 가지 정보는 서로 연결되어 관람자의 현재 일시적 감정을 표출한다. 텍스트의 경직된 내러티브는 관람자의 초상 이미지와 제스처를 통하여 약간의 자유도를 가지게 되고, 동시에 현실과 밀착된 스토리의 구조를 생산하고 확장해간다. 이렇게 창조된 작품 공간은 실시간으로 관람자의 내러티브를 반영하고 갱신되며 창작되는 체험 공간이며, 자신의 반영이다. 또한 관람자의 능동적인 개입과 행위를 통해 적극적인 감상 행위를 유도해낸다.

• 문화기술의 융합
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• 제5권1호
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• pp.113-118
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• 2019

최북(崔北)(1712~1786)은 중서층(中庶層) 출신의 여항화가(閭巷畵家)로서 시(詩) 서(書) 화(畵)를 겸비한 삼절작가(三絶作家)이다. 신분적 차별에 대한 저항적 냉소와 스스로 어디에도 구속되지 않는 광방불기(狂放不羈)한 광기(狂氣), 그리고 자신의 예술적 재능에 대한 자부심으로 인한 오만(傲慢)과 명인(名人) 의식 등을 탈속적(脫俗的) 문사적(文士的) 문인화를 통해 개성적 화풍(畵風)으로 광견(狂?)하게 발현하였다. 그의 문인화는 시화일치(詩畵一致)라는 시의도(詩意圖)가 많으며, 화법(畵法)은 근력(筋力)을 위주로 하여 불구격투(不拘格套)의 광필(狂筆)로 대상물을 묘사하였고, 파격적 구도와 필선의 간일(簡逸)함, 여백과 색채의 독창적 운용으로 한 차원 높은 예술의경을 발현하였다. 그의 문인화는 광자(狂者)의 오만한 듯한 진취적 기상과 견자(?者)의 변혁적 심미를 고수하고자 하는 예술관이 작품에 자연스럽게 투영되었다.