• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 추계학술대회논문집
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• pp.840-845
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• 2004

Development of the linear motors is recently required to control a high-speed and high-resolution in the high-integrated and speed process industry. This paper presents vibration analyses as well as measurement standards of the newly developed linear motors through analyzing the vibration characteristics of the advanced products. Vibration experiments are conducted for identifying vibration level during operation. They are also included in the modal test to analyze dynamic characteristics. Analytic data using Finite Element Method (FEM) are compared with the results of the modal. The FEM and experiments make it possible to understand these characteristics. Further, through computer simulation for the behavior of moving part to be vibration source, the best acceleration pattern of moving part movement can be verified to achieve effective moving part positioning and reduce the vibration due to moving part movement.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.100-101
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• 2019

For buildings where a large number of the evacuees who are restricted to evacuation behavior compared to normal people, evacuation safety zones should be secured against fire. In order to form a safe haven safety zone, we are going to predict the performance of the building and describe the plan to secure a safe haven zone accordingly.

• 한국컴퓨터정보학회논문지
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• 제24권6호
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• pp.21-28
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• 2019

Recent years with the development of artificial intelligence and the success of the deep model, they have been deployed in all fields of computer vision. Action recognition, as an important branch of human perception and computer vision system research, has attracted more and more attention. Action recognition is a challenging task due to the special complexity of human movement, the same movement may exist between multiple individuals. The human action exists as a continuous image frame in the video, so action recognition requires more computational power than processing static images. And the simple use of the CNN network cannot achieve the desired results. Recently, the attention model has achieved good results in computer vision and natural language processing. In particular, for video action classification, after adding the attention model, it is more effective to focus on motion features and improve performance. It intuitively explains which part the model attends to when making a particular decision, which is very helpful in real applications. In this paper, we proposed a 3D dense convolutional network based on attention mechanism(ADD-Net), recognition of human motion behavior in the video.

• 복식
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• 제53권2호
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• pp.171-182
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• 2003

The purpose of this study was to determine dimension of service quality, there by to analyze difference of service quality according to the types of fashion retail stores. and to investigate consumer variables (demographic characteristics, purchase behavior) and service quality which affect consumer satisfaction. The subject were 451 women in the age of twenty to forty years old who live in Seoul and the suburban of Seoul. The results of the study were as follows : First, it was found that fashion retail store's service quality was classified 5 factors: (1)salesperson. (2)convenience of shopping, (3)variety of product and facility. (4)store policy, (5)efficiency of movement. Second, departmentstore was evaluated the highest in terms of all factors. Discountstore was evaluated highly in terms of store policy and lowly in terms of variety of production and facility. East & South gate fashion shopping mall was evaluated the lowest in terms of all factors except variety of product and facility. Third, service quality and satisfaction showed significant differences in demographic characteristics. Purchase behavior of each fashion retail stores showed significant differences. The difference of service quality and satisfaction depending on purchase behavior showed a significant positive relation. Forth, service quality of discountstore and East & South gate fashion shopping mall were affected by purchase behavior partially. Departmentstore users were affected by salesperson and store policy. Discountstore users were affected by all factors except convenience of shopping. East & South fate fashion shopping mall users were affected by all factors.

• 한국실내디자인학회논문집
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• 제14권6호
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• pp.236-243
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• 2005

The pre-examination closely beforehand relation between the articles on exhibition and visitors, the visitors and exhibition space, the exhibition space and the articles on exhibition, and the acceptance of various requirements are the matters you should consider in the initial stage when planning the establishment of a museum. Especially, the clear guideline for the layout of exhibition to meet the intention of spectators considered based on the seeing behavior in the exhibition hall (i.e. they see the articles on exhibition in order passively under instructions of the museum or select them by themselves positively etc.), and the moving line of appreciation and the exhibition type seems to be not yet prepared sufficiently. This study can be defined as the study of fundamental background for the architectural guideline for the characteristics of visitor's behavior, the selected moving line in the exhibition hall, the layout against the forced moving line and the type of exhibition space. As a part of this study, we carried out the research and the study for how the movement of visitors and the characteristics of seeing behaviors according to the type of the moving line are shown, based on the type of moving line for seeing suggested by David Dean.

• International Journal of Automotive Technology
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• 제7권5호
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• pp.603-608
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• 2006

As an important and relatively easy to implement technology for realizing Intelligent Transportation Systems(ITS), Adaptive Cruise Control(ACC) automatically adjusts vehicle speed and distance to a preceding vehicle, thus enhancing driver comfort and safety. One of the key issues associated with ACC development is usability and user acceptance. Control parameters in ACC should be optimized in such a way that the system does not conflict with driving behavior of the driver and further that the driver feels comfortable with ACC. A driving simulator is a comprehensive research tool that can be applied to various human factor studies and vehicle system development in a safe and controlled environment. This study investigated driving behavior with ACC for drivers with different driving styles using the driving simulator. The ACC simulation system was implemented on the simulator and its performance was evaluated first. The Driving Style Questionnaire(DSQ) was used to classify the driving styles of the drivers in the simulator experiment. The experiment results show that, when driving with ACC, preferred headway-time was 1.5 seconds regardless of the driving styles, implying consistency in driving speed and safe distance. However, the lane keeping ability reduced, showing the larger deviation in vehicle lateral position and larger head and eye movement. It is suggested that integration of ACC and lateral control can enhance driver safety and comfort even further.

• Geomechanics and Engineering
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• 제7권1호
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• pp.87-103
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• 2014

This study investigated the effect of soil-structure interaction (SSI) on the response of base-isolated buildings. Seismic isolation can significantly reduce the induced seismic loads on a relatively stiff building by introducing flexibility at its base and avoiding resonance with the predominant frequencies of common earthquakes. To provide a better understanding of the movement behavior of multi-story structures during earthquakes, this study analyzed the dynamic behavior of multi-story structures with high damping rubber bearing (HDRB) behavior base isolation systems that were built on soft soil. Various models were developed, both with and without consideration of SSI. Both the superstructure and soil were modeled linearly, but HDRB was modeled non-linearly. The behavior of the specified models under dynamic loads was analyzed using SAP2000 computer software. Erzincan, Marmara and Duzce Earthquakes were chosen as the ground motions. Following the analysis, the displacements, base shear forces, top story accelerations, base level accelerations, periods and maximum internal forces were compared in isolated and fixed-base structures with and without SSI. The results indicate that soil-structure interaction is an important factor (in terms of earthquakes) to consider in the selection of an appropriate isolator for base-isolated structures on soft soils.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.486-487
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• 2019

스마트폰에는 다양한 센서가 내장되어 있다. 특히 가속도 센서는 물체의 움직임을 파악할 수 있기 때문에 사람의 행동을 분석하는데 많이 사용된다. 기존의 연구들은 가속도센서의 값의 크기를 분석하여 사람의 행동을 분석하였다. 본 연구에서는 스마트폰에 내장된 가속도 센서의 값을 K-평균을 적용하여 움직임을 파악하는 방법을 제안하였다. 스마트폰의 가속도센서의 값을 K-평균을 적용하여 사람의 기본적인 행동인 걷기와 달리기를 인식하기 방법을 제안하였다.

• The Journal of Asian Finance, Economics and Business
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• 제9권9호
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• pp.351-360
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• 2022

This study aims to determine the factors that can influence investors in selecting stocks in the Indonesian capital market to establish an optimal portfolio, and find phenomena that occurred during the COVID-19 pandemic so that buying interest / the number of investors increased in the Indonesian capital market. This study collection technique uses primary data obtained from the survey questionnaire and secondary data which is market data, stock price movement data sourced from the Indonesia Stock Exchange, Indonesian Central Securities Depository, and Bank Indonesia, as well as empirical literature on behavior finance, investment decision, and interest in buying stock. The method used in this research is the survey questionnaire analysis with the SEM (statistical approach). The results of the analysis using SEM show that investor behavior influences the stock-buying interest, investor behavior, and the stock-buying interest influences investor decision-making. However, risk management does not influence investor-decision making. This occurs when the investigator's psychological capacity produces more decision information by decreasing all potential biases, allowing the best stock selection model to be selected. When the investigator's psychological capacity creates more decision information by reducing biases, the optimum stock selection model can be chosen.

• 한국공간구조학회논문집
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• 제22권1호
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• pp.33-40
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• 2022

When the center of stiffness and the center of mass of the structure differ under the seismic load, torsion is caused by eccentricity. In this study, an analysis model was modeled in which the positions of the core and the plane rotation axis of a 60-story torsional atypical structure with a plane rotation angle of 1 degree per floor were different. The structural behavior of the analysis model was analyzed, and the earthquake response behavior of the structure was analyzed based on the time history analysis results. As a result, as the eccentricity of the structure increased, the eccentricity response was amplified in the high-rise part, and the bending and torsional behavior responses were complex in the low-order vibration mode. As a result of the analysis, the maximum displacement and story drift ratio increased due to the torsional behavior. The maximum story shear force and the story absolute maximum acceleration showed similarities for each analysis model according to the shape of the vibration mode of the analysis model.