• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 춘계학술대회
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• pp.1070-1075
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• 2004

Many mid-sized companies in Korean automotive industry have attempted to solve the lack of human power, to control the quality of components, to improve the production rate, and to innovate the manufacturing line. The goals of this study are to analyze the production rate of an automotive component manufacturing line using simulation software, to construct a Flexible Automation Subassembly (FAS) system and to suggest an optimized layout design using FAS line. In this research, the simulation model for manufacturing line was developed and used the realistic data (production planning, component type, working order, process time, queue time, line rules, etc) of a medium sized company in Korean automotive industry. To complete this research, a simulation software 'ARENA' was used.

• 대한가정학회지
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• 제38권4호
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• pp.143-162
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• 2000

This study aimed to analyze the attitudes which married women, who are employed or not, have to the four flexible work conditions; flexible working hours, home-based work, guarantee of reentering into the work place, and a certain allocation of women's labor force. Whether the married women were employed or not, they showed a favorable attitude to the four flexible work conditions. For the married women who were not employed, their age, education level, husband's occupation, their wanted income(if they have a job), and work experience were significant variables to affect the attitudes to each work condition. In contrast to above results, the attitudes to each work condition that the employed women had were significantly different according to more various variables including personal variables, child related variables, and work related variables. suggest that married women hoped the sex conscious systems would be introduced in the labor market.

• 한국환경복원기술학회지
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• 제7권6호
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• pp.61-74
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• 2004

Hydraulic engineers and scientists working on river restoration recognize the need for a deeper understanding of natural streams as a complex and dynamic system, which involves not only abiotic elements(flow, sediments) but also biotic components. From this point of view, the role played by riverine vegetation dynamics and flow conditions becomes essential. Hydro-mechanic interaction between flow and flexible plants covering a river bed is studied in this paper and some previous works are discussed. Measurements of turbulence and flow resistance in vegetated open channel were performed using rigid and flexible tube. Measuring detailed turbulent velocity profiles within and above submerged and flexible stems allowed to distinguish different turbulent regimes. Some interesting relationships were obtained between the velocity field and the deflected height of the plants, such as a reduced drag coefficient in the flexible stems. Turbulent intensities and Reynolds stresses were measured showing two different regions : above and inside the vegetation domain. In flexible vegetated open channel, the maximum values of turbulent intensities and Reynolds stresses appear above the top of canopy. Method to predict a flow resistance in flexible vegetated open channel is developed by modifying an analytical model proposed by Klopstra et al. (1997). Calculated velocity profiles and roughness values correspond well with flume experiments. These confirm the applicability of the presented model for open channel with flexible vegetation. The new method will be verified in the real vegetated conditions in the near future. After these verifications, the new method should be applied for nature rehabilitation projects such as river restorations.

• 한국산업융합학회 논문집
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• 제17권1호
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• pp.21-26
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• 2014

The focus of this paper is the designing a flexible three fingered hand system with 16 D.O.F for dynamic manipulation with an intelligent controller, and to build a useful database for dynamic manipulation based on the experimental results. The weight of the hand module is only 0.7 kg, but flexible motion and powerful grasping are possible. To achieve such a dynamic motion in a robotic hand, we have developed a flexible fingered hand with a control system incorporating image recognition system in which we deal with the problems of not only accuracy and range of motion but also the flexibility of hand. The fingers are arranged so as to grasp both circular and prismatic objects. In order to achieve the light mechanism, we reduced the number of joints and fingers as much as possible. We used three fingers, which is the minimum number to achieve a stable grasp.

• 한국공작기계학회논문집
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• 제17권6호
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• pp.71-76
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• 2008

The focus of this paper is the designing a flexible three fingered hand system with 16 D.O.F for dynamic manipulation with an intelligent controller, and to build a useful database for dynamic manipulation based on the experimental results. The weight of the hand module is only 0.7 kg, but flexible motion and powerful grasping are possible. To achieve such a dynamic motion in a robotic hand, we have developed a flexible fingered hand with a control system incorporating image recognition system in which we deal with the problems of not only accuracy and range of motion but also the flexibility of hand. The fingers are arranged so as to grasp both circular and prismatic objects. In order to achieve the light mechanism, we reduced the number of joints and fingers as much as possible. We used three fingers, which is the minimum number to achieve a stable grasp.

• 한국전기전자재료학회논문지
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• 제31권7호
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• pp.510-514
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• 2018

This study discusses and demonstrates the structural stability of highly ordered Pt patterns formed on a transparent and flexible substrate through the process of nanotransfer printing (nTP). Bending tests comprising approximately 1,000 cycles were conducted for observing Pt line patterns with a width of $1{\mu}m$ formed along the direction of the horizontal (x-axis) and vertical (y-axis) axes ($15mm{\times}15mm$); and adhesion tests were performed with an ultrasonicator for a period greater than ten minutes, to analyze the Pt crossbar patterns. The durability of both types of patterns was systematically analyzed by employing various microscopes. The results show that the Pt line and Pt crossbar patterns obtained through nTP are structurally stable and do not exhibit any cracks, breaks, or damages. These results corroborate that nTP is a promising nanotechnology that can be applied to flexible electronic devices. Furthermore, the multiple patterns obtained through nTP can improve the working performance of flexible devices by providing excellent structural stability.

• 인지과학
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• 제26권4호
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• pp.453-481
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• 2015

본 연구는 시각작업기억의 표상 특성에 대해 상반되는 주장을 펼치고 있는 고정해상도 슬롯 모형과 탄력적 자원 모형을 개관하고, 두 모형 간 상충을 해소하기 위한 노력이 필요함을 강조하였다. 이를 위해 고정해상도 슬롯과 탄력적 자원 모형을 태동시킨 객체 및 병렬 저장 가설을 살펴보고 두 모형의 상반되는 주장에 대한 이론적 근거를 소개하였다. 다음으로 두 모형을 지지한 구체적인 연구 사례를 통해 경험적 지지 증거의 객관성을 평가하고 관련 신경생리학적 모형에 대한 이해를 시도하였다. 마지막으로 두 모형 간의 상충을 해소하기 위한 이론적 그리고 방법론적 재고와 이를 달성하기 위한 수렴적 증거 확보의 필요성을 강조하였다.

• Journal of Welding and Joining
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• 제32권5호
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• pp.58-64
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• 2014

The shipbuilding industry is facing the various problems of less demand and oversupply owing to the global economic crisis and the increase in shipbuilding countries. Shipyards of the industry are making effort to strengthen their ability to handle the crisis via a smartwork technology for flexible working environment. In this study, we developed a smartwork system that manages the information in shipbuilding process with mobile devices such as smart phones and tablet PCs. To successfully apply the developed smartwork system to shipyards, we analyzed several best practices and management tasks of the shipbuilding processes. The developed system was designed by CBD approach that is a branch of service-oriented software engineering for reusability and flexibility on the system. As it is designed considering the flexible working environment, it supports to increase their productivity by reducing the time required to carry out tasks and by increasing the mobility required to manage work performance in field of shipyards.

• 한국생산제조학회지
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• 제23권5호
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• pp.435-442
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• 2014

This paper describes an improved design model that can be used to configure a non-contact pneumatic device to turn a large sheet at the in-line system. For rotational moving in the conveyor system, the conventional method is to turn the system itself. The improved non-contact pick-up system mainly uses 8 pairs of L-shaped latches and 12 swirl type heads. It is positioned above the upward air flow table. This system performs the non-contact gripping and side-edge contact support in the vertical and rotational directions to hold the self-weight of a large flat sheet. A non-contact air head can exert a sufficient gripping ability at 4N lower than the standard working pressure. The side latches support 60% of the lifting force required. Through structural and flow analysis, the working conditions were simultaneously considered in accordance with the deflection and flatness of the glass.

• 보건의료산업학회지
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• 제12권2호
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• pp.1-14
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• 2018

Objectives : The purpose of this study was to analyze the effect of welfare system of medical institutions on job satisfaction and organizational commitment of female workers. Methods : A survey was performed with 556 female workers of 11 general hospital and 7 acute period hospital in Busan. Data were collected from October to November 2017 with a self-report questionnaire and analyzed using SPSS 24.0. Results : Among those aged over 40 years, high awareness of obligatory welfare, job education, free use of the annual leave, and flexible working system was a positive factor in job satisfaction. Among managers, free use of the annual leave, job education, flexible working system and child-care facilities was a positive factor in organizational commitment. Conclusions : In medical institutions with a relatively high proportion of married women, although interest in welfare for childbirth and child rearing is high, execution is sluggish, hence, policy support of government and medical institutions in this field is necessary.