• Architectural research
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• 제18권3호
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• pp.103-111
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• 2016

This paper investigates the characteristics of preservation of Korean modern architecture through Western historic preservation theories and philosophies. This research focuses on the Japanese Government-General of Korea (1926-1995) which was built in 1926 and used as the chief administrative building in Seoul (Keijo in Japanese) during the Japanese colonial period (1910-1945). After Korea was liberated from Japanese rule in 1945, this building was used until 1995 for the South Korean National Assembly, the United States Army Military Government in Korea, and the National Museum of South Korea. Although it served a variety of roles, this building was the most controversial case of historic preservation in Korean modern architecture. To analyze the peculiarities and characteristics of Korean modern architecture and its preservation, this research applied Western historic preservation theories, not exclusively from classical historic preservation theories developed by Viollet-le-Duc and John Ruskin, but also from modern historic preservation theories by Theodore H. M. Prudon, Daniel Blunstone, and Frances A. Yates. This cross-cultural and comparative study of historic preservation helps identify Korean modern architecture's characteristics. It can also be a useful reference in finding the origins of Korean modern architectural identity.

• 응용통계연구
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• 제26권1호
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• pp.59-70
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• 2013

2012년 4월 11일 총선 당일 이루어진 출구조사에서 정당별 의석수를 구간으로 예측했음에도 불구하고 예측이 빗나갔다. 지상파 3사가 출구조사는 공동으로 실시하였지만 정당별 의석수 예측은 각자 하였다고 하는데 구체적 예측 방법은 공개하지 않았다. 이 논문에서 정당별 지역구 의석수를 구간으로 추정하는 방법을 제안하고 그 성능을 모의실험을 통해 알아보았다. 그리고 제19대 총선 출구조사의 실제자료에 적용해 보았다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1993년도 추계학술대회발표논문집; 서강대학교, 서울; 25 Sep. 1993
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• pp.12-19
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• 1993

In general, the line balancing problem is defined as of finding an assignment of the given jobs to the workstations under the precedence constraints given to the set of jobs. Usually, the objective is either minimizing the cycle time under the given number of workstations or minimizing the number of workstations under the given cycle time. In this paper, we present a new type of an assembly line balancing problem which occurs in an electronics company manufacturing home appliances. The main difference of the problem compared to the general line balancing problem lies in the structure of the precedence given to the set of jobs. In the problem, the set of jobs is partitioned into two disjoint subjects. One is called the set of fixed jobs and the other, the set of floating jobs. The fixed jobs should be processed in the linear order and some pair of the jobs should not be assigned to the same workstations. Whereas, to each floating job, a set of ranges is given. The range is given in terms of two fixed jobs and it means that the floating job can be processed after the first job is processed and before the second job is processed. There can be more than one range associated to a floating job. We present a procedure to find an approximate solution to the problem. The procedure consists of two major parts. One is to find the assignment of the floating jobs under the given (feasible) assignment of the fixed jobs. The problem can be viewed as a constrained bin packing problem. The other is to find the assignment of the whole jobs under the given linear precedence on the set of the floating jobs. First problem is NP-hard and we devise a heuristic procedure to the problem based on the transportation problem and matching problem. The second problem can be solved in polynomial time by the shortest path method. The algorithm works in iterative manner. One step is composed of two phases. In the first phase, we solve the constrained bin packing problem. In the second phase, the shortest path problem is solved using the phase 1 result. The result of the phase 2 is used as an input to the phase 1 problem at the next step. We test the proposed algorithm on the set of real data found in the washing machine assembly line.

• 한국산업보건학회지
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• 제25권4호
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• pp.573-583
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• 2015

Objectives: This study was carried out to evaluate the effect of noise exposure and aging on changes in hearing threshold level and the relationship between age and noise. Materials: The author selected 274 male shipyard and assembly line workers as the noise exposed group and 582 males not exposed to noise as the general population group. Data were collected from five years of consecutive annual audiometric tests performed from 2008 to 2012. Results: In the general population and noise exposed groups, there was a reverse phenomenon that hearing threshold level for 2009 was lower than that of 2008, which seemed to be due to the learning effect, but from 2010 hearing threshold level increased. In the noise exposed group, the mean hearing threshold level in the left ear was significantly higher than that for right ear. In the general population group, the older was the age, the higher was the hearing threshold level, especially at 4000 Hz. In the general population and noise exposed groups, frequency, age group and noise exposure independently affected hearing threshold level, and there was no relationship between age and noise exposure. Over all frequencies, the change of hearing threshold level was larger in the noise exposed group than in the general population group. In the noise exposed group below thirty years old, the change at 4000 Hz was remarkable. Conclusions: Age and noise exposure seem to affect hearing threshold level independently and contribute to an additive effect on hearing threshold level.

• 한국항해항만학회지
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• 제29권3호
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• pp.235-244
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• 2005

과거 집시법이 예정하지 못했던 우발적 시위, 긴급집회, 해상시위, 자동차전용도로상의 시위 등 시간적, 장소적 특성을 지니는 새로운 유형의 집회시위가 사회적으로 문제되고 있다. 특히 이 중에서 해상시위에 대하여 집시법을 적용할 수 있는지, 있다면 어떠한 논리를 전개해야 한지 내지 적용할 수 없다면 어떠한 법을 적용해야 한지가 공법영역에서 문제되고 있다. 그 동안 학설은 소극적, 적극적 입장으로 대립하여 왔지만, 해상시위는 장소적 자가결정권에 입각한 헌법상 집회시위자유권의 하나로 보장되어야 한다, 이에 따라 집시법상 집회시위개념은 헌법에 합치되는 방향으로 해석되어야 하므로 해상시위와 같은 집시법상 비전형적 집회에 집시법을 유추적용 한다든지 아니면 경찰관직무집행법과 감은 일반경찰법을 적용하여야 한다간 견해간 설득력이 없다. 그리고 현대적 시위상황에 비추어 해상시위도 소수자보호를 위한 민주주의적 기능을 보유한다는 것을 그려할 때 집시법을 직접 적용하여 규율함이 정당하다.

• Design & Manufacturing
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• 제14권1호
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• pp.8-14
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• 2020

In general, auto parts production assembly line is assembled and produced by automatic mounting by an automated robot. In such a production site, quality problems such as misalignment of parts (doors, trunks, roofs, etc.) to be assembled with the vehicle body or collision between assembly robots and components are often caused. In order to solve such a problem, the quality of parts is manually inspected by using mechanical jig devices outside the automated production line. Automotive inspection technology is the most commonly used field of vision, which includes surface inspection such as mounting hole spacing and defect detection, body panel dents and bends. It is used for guiding, providing location information to the robot controller to adjust the robot's path to improve process productivity and manufacturing flexibility. The most difficult weighing and measuring technology is to calibrate the surface analysis and position and characteristics between parts by storing images of the part to be measured that enters the camera's field of view mounted on the side or top of the part. The problem of the machine vision device applied to the automobile production line is that the lighting conditions inside the factory are severely changed due to various weather changes such as morning-evening, rainy days and sunny days through the exterior window of the assembly production plant. In addition, since the material of the vehicle body parts is a steel sheet, the reflection of light is very severe, which causes a problem in that the quality of the captured image is greatly changed even with a small light change. In this study, the distance between the car body and the door part and the door are acquired by the measuring device combining the laser slit light source and the LED pattern light source. The result is transferred to the joint robot for assembling parts at the optimum position between parts, and the assembly is done at the optimal position by changing the angle and step.

• 한국조사연구학회:학술대회논문집
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• 한국조사연구학회 2001년도 춘계학술대회
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• pp.1.2-35
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• 2001

2000년 4월 13일의 제 16대 국회의원 선거에서 전화조사와 출구조사를 활용하여 KBS, SBS, MBC 등 TV 방송사들은 당선자 예측방송을 한 바 있다. 그러나 결과적으로 부정확한 것으로 드러났고 이에 따라 통계조사에 대한 일반인의 불신감만 키우는 결과가 되었다. 이 연구의 목적은 다음과 같다. 1) 4.13 총선거 예측에서 전화조사와 출구조사가 실제로 어떠하였는가\ulcorner 2) 무엇이 문제였는가\ulcorner 3) 무엇을 개선해야 하는가\ulcorner 등이다. 주요 결론은 전화조사에서 재통화(call back)에 대하여 느슨한 조사규칙이 적용되는 등 확률표집의 원칙이 충실하게 준수되지 않았으며 출구조사에서는 투표소 표집 수가 너무 작았다는 것이다. 또한 근본적인 개선을 위해서는 선거여론조사에 관한 법의 개정이 필요함을 지적하였다.

• 한국조사연구학회지:조사연구
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• 제2권1호
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• pp.1-35
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• 2001

2000년 4월 13일의 제 16대 국회의원 선거에서 전화조사와 출구조사를 활용하여 KBS, SBS, MBC 등 TV 방송사들은 당선자 예측방송을 한 바 있다. 그러나 결과적으로 부정확한 것으로 드러났고 이에 따라 통계조사에 대한 일반인의 불신감만 키우는 결과가 되었다. 이 연구의 목적은 다음과 같다. 1) 4ㆍ13총선거 예측에서 전화조사와 출구조사가 실제로 어떠하였는가\ulcorner 2) 무엇이 문제였는가\ulcorner 3) 무엇을 개선해야 하는가\ulcorner 등이다. 주요 결론은 전화조사에서 재통화(call back)에 대하여 느슨한 조차규칙이 적용되는 등 확률표집의 원칙이 충실하게 준수되지 않았으며 출구조사에서는 투표소 표집 수가 너무 작았다는 것이다. 또한 근본적인 개선을 위해서는 선거여론조사에 관한 법의 개정이 필요함을 지적하였다.

• 한국CDE학회논문집
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• 제17권2호
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• pp.79-90
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• 2012

In digital virtual manufacturing simulation, Digital Human widely used to optimal workplace design, enhancing worker safety in the workplace, and improving product quality. However, the case of ergonomics simulation solutions to support digital human modeling, Optimal DHM (Digital Human Model) data needed to develop and perform DHM will collect information related to the production process. So simulation developer has burden of collecting information. In this study, to overcome the limitations of existing solutions, we proposed the ADAGIO(Automated Digital humAn model development for General assembly usIng Ontology) framework. The ADAGIO framework was developed for DHM ontology to support optimal deployment of digital virtual environment and in order to ensure consistency of simulation components that are required for simulation modeling was made of a library.

• 한국CDE학회논문집
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• 제18권1호
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• pp.28-35
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• 2013

Product Life cycle Management (PLM) is an indispensable tool for manufactures to develop competitive products in an efficient way. This enlarges the number of participants for product development who should understand PLM for their supporting activities. However, burdens for developing example products, maintaining complex PLM systems and training prerequisite skills for engineering tools such as CAD systems prohibit an efficient introductory course to PLM. This paper proposes a comprehensive introductory course to PLM that bases on general product development process. In addition, it enables participants to build their example products with familiar Lego blocks and to construct 3D CAD assembly models by using predefined 3D elements. The PLM system for the course provides an intuitive and simple user environment for participants to specify their parts lists, associated 3D CAD models, and product structure of example products. Experiences on a class of the course show it is a valid and efficient education and training method for the PLM introduction.