• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2007년도 춘계학술대회 논문집
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• pp.791-792
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• 2007

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.819-824
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• 2007

Outfitting system in ship design has huge kinds of standard part. Data base of and automatic design procedure of part master should be included in ship cad in order to reduce the design time. Present study shows an process of part master DB construction of pipe equipments using 3-dimensional CAD environment Attribute and properties of part masters are chosen from JIS standard. As the schema of part masters are stored in data base, 3D geometric model is parsed from the schema.

• 한국CDE학회논문집
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• 제15권1호
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• pp.60-69
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• 2010

Outfitting systems in marine vessels have many kinds of standard parts. Ship CAD system should support the designers with an efficient tool for the modeling of outfitting parts such as pipes and valves. We develop a practical procedure for a part master model that combines ship CAD systems with the industrial standard. Part master or catalogue database of standard equipments is included in the database of ship CAD. The part master makes the associations of three dimensional modeling with the industrial standard. Moreover, it reflects the automatic modeling to maintain attributes that are disclosed in the entity of each part master in order to reduce the modeling time. Entity and attributes of pipe and valves are chosen from JIS(Japanese Industrial Standards) in order to explain the proposed procedure. Suggested procedure explains that three dimensional model of equipment is generated by parsing the pre-defined attributes after the entities of part masters is stored in database.

• 공연문화연구
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• 제32호
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• pp.243-267
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• 2016

더늠은 그것이 더늠이라는 말로 명명되기 그 이전부터 존재했을 것이다. 물론 당시 더늠이라는 말이 지칭했던 대상은 현재 더늠이라는 말로 부르는 대상과 같지 않았다. 더늠이라는 용어의 개념, 이것이 지칭하는 대상의 성격 및 범주에는 나름의 역사적 변천이 있어왔기 때문이다. 본고에서는 더늠의 어원을 조금 다른 각도에서 다시 추적해 보았다. 이 용어가 일상어로 쓰였을 가능성 및 판소리 외의 다른 예술 분야에서 쓰였을 가능성을 검토한 결과, 본래 가락을 범범하게 지칭하는 말이었음을 확인할 수 있었다. 더늠은 국악계에서 널리 쓰이는 '-드름'과 같은 범주에 드는 말이었던 것이다. 하지만 전기팔명창 시대 초창기 및 그 이전에 통용되었던 '가락으로서의 더늠' 개념은 오랜 시간이 흐르는 동안 점차 약화되어 거의 찾아볼 수 없게 되었다. 일상어로 쓰이던 더늠이라는 말이 판소리로 처음 들어왔을 때에는 명창이 구사하는 독특한 가락을 지칭하는 정도의 용어로 쓰였으나 판소리가 예술적으로 발전함에 따라 점차 독립적인 소리 대목 단위를 지칭하는 용어로 바뀌게 되었고, 전기팔명창 시대에는 이러한 용례가 완전히 일반화되었다. 한편 전기팔명창 시대에 더늠으로 인정되었던 소리 대목 대부분은 명창이 새로 만들어 판소리에 편입시킨 창작 레퍼토리, 즉 '창작으로서의 더늠'이었지만, 후기팔명창 시대로 접어들면서는 기존의 더늠을 탁월한 기량으로 소화해 장기화(長技化)한 인기 레퍼토리, 즉 '장기로서의 더늠'도 더늠으로 인정되기 시작했다. 더늠의 용례에 일종의 분화가 있게 된 것이다. 그리고 근대오명창 시대 및 그 이후에 더늠으로 인정받은 소리 대목 대부분은 '장기로서의 더늠'에 포함되기에 이르렀다. 이러한 맥락에서 보면, 정노식은 더늠 개념의 역사적 변천을 세심하게 고려하면서 "조선창극사"의 서술에 임했다고 할 수 있다. "조선창극사"에는 '가락으로서의 더늠', '창작으로서의 더늠', '장기로서의 더늠' 용례가 모두 확인되기 때문이다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 26-27 Oct. 1990
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• pp.985-989
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• 1990

This paper presents a fundamental study of a millimeter-sized master-slave robot driven by conduit-guided wires, which is expected to be applied to the delicate surgical operations, the assembling precise and small parts and so on. This system consists of a millimeter-sized slave robot and a master manipulator of which the size is adapted to a human finger. Displacement and torque of the master side can be reduced and transferred to the slave robot by controlling the motor torque against the master torque by feeding back tension signals. The master can feel the tensions by the motor torque. In this paper, the design method and making process of the master-slave system and the dynamical characteristic of displacement and torque control are proposed.

• 대한기계학회논문집A
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• 제39권2호
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• pp.137-142
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• 2015

최근 국방 및 보안 분야 등과 같은 위험 환경에서 임무를 수행하는 로봇 팔의 원격제어와 관련된 연구가 활발히 진행되고 있다. 로봇 팔의 원격제어를 위해서는 조작장치가 필수적이므로, 본 연구에서는 스튜어트 플랫폼을 기반으로 로봇 팔을 직관적으로 제어할 수 있으며, 기존의 조작장치와 비교하여 이동성 및 휴대성이 우수한 조작장치를 개발하였다. 조작장치의 크기와 무게를 최소화하기 위하여 스튜어트 플랫폼을 기반의 기구부를 구성하였으며, 조작장치의 동작범위를 최대화하기 위하여 와이어를 적용하였다. 개발된 조작장치를 검증하기 위하여 상용 IMU와 비교실험을 수행하였으며, 실험 결과를 바탕으로 개발된 조작장치의 실용성과 신뢰성을 검증하였다.

• 한국정밀공학회지
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• 제16권6호
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• pp.52-57
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• 1999

Funtional metal prototypes are often required in numerous industrial applications. These components are typically needed in the early stage of a project to determine form, fit and function. Recent R/P(Rapid Prototyping) part are made of soft materials such as plastics, wax, paper, these master models cannot be employed durable test in real harsh working environment. Parts by direct metal rapid tooling method, such as laser sintering, by now are hard to get net shape, pores of the green parts of powder casting method must be infiltrated to get proper strength as tool, and new type of 3D direct tooling system combining fabrication welding arc and cutting process is reported by song etc. But a system which can build directly 3D parts of high performance functional material as metal part would need long period of system development, massive investment and other serious obstacles, such as patent. In this paper, through the rapid tooling process as silicon rubber molding using R/P master model, and fabricate wax pattern in that silicon rubber mold using vacuum casting method, then we tranlsated the wax patterns to numerous metal prototypes by new investment casting process combined conventional investment casting with rapid pototyping & rapid tooling process. with this wax-injection-mold-free investment casting, we developed new investment casting process of fabricating numerous functional metal prototypes from one master model, combined 3-D CAD, R/P and conventional investment casting and tried to expect net shape measuring total dimension shrinkage from R/P part to metal part.

• 한국주조공학회지
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• 제20권5호
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• pp.330-335
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• 2000

Functional metal prototypes are often required in numerous industrial applications. These components are typically needed in the early stage of a project to determine form, fit and function. Recent R/P(Rapid Prototyping) part are made of soft materials such as plastics, wax, paper, these master models cannot be employed durable test in real harsh working environment. Parts by direct metal rapid tooling method, such as laser sintering, by now are hard to get net shape, pores of the green parts of powder casting method must be infiltrated to get proper strength as tool, and new type of 3D direct tooling system combining fabrication welding arc and cutting process is reported. But a system which can build directly 3D parts of high performance functional material as metal park would get long period of system development, massive investment and other serious obstacles, such as patent. In this paper, through the rapid tooling process as silicon rubber molding using R/P master model, and fabricate wax pattern in that silicon rubber mold using vacuum casting method, then we translated the wax patterns to numerous metal tool prototypes by new investment casting process combined conventional investment casting with rapid prototyping & rapid tooling process. With this wax-injection-mold-free investment casting, we developed new investment casting process of fabricating numerous functional metal prototypes from one master model, combined 3-D CAD, R/P and conventional investment casting and tried to expect net shape measuring total dimension shrinkage from R/P pare to metal part.

• Genomics & Informatics
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• 제14권3호
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• pp.70-77
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• 2016

Transposable elements are one of major sources to cause genomic instability through various mechanisms including de novo insertion, insertion-mediated genomic deletion, and recombination-associated genomic deletion. Among them is Alu element which is the most abundant element, composing ~10% of the human genome. The element emerged in the primate genome 65 million years ago and has since propagated successfully in the human and non-human primate genomes. Alu element is a non-autonomous retrotransposon and therefore retrotransposed using L1-enzyme machinery. The 'master gene' model has been generally accepted to explain Alu element amplification in primate genomes. According to the model, different subfamilies of Alu elements are created by mutations on the master gene and most Alu elements are amplified from the hyperactive master genes. Alu element is frequently involved in genomic rearrangements in the human genome due to its abundance and sequence identity between them. The genomic rearrangements caused by Alu elements could lead to genetic disorders such as hereditary disease, blood disorder, and neurological disorder. In fact, Alu elements are associated with approximately 0.1% of human genetic disorders. The first part of this review discusses mechanisms of Alu amplification and diversity among different Alu subfamilies. The second part discusses the particular role of Alu elements in generating genomic rearrangements as well as human genetic disorders.

• 대한기계학회논문집A
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• 제25권5호
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• pp.891-898
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• 2001

This paper develops a master manipulator which can reflect a force from a slave manipulator effectively. It many have a big workspace, can represent a human operators manipulation perfectly, and is composed of a position control part, an orientation control part and an end effector control part. This paper also develops a graphic simulator using the Visual C++ and OpenGL in the Window operating system. It can be used to make a virtual slave manipulator and set a virtual working environment, and provide a visual information from a desired view point. A virtual teleoperation system is developed by connecting the developed master manipulator to the graphic simulator using an interfacing hardware bilaterally. It is used for performing a virtual object exploration experiment. In the experiment, two virtual objects are used. They are virtual wall and virtual hexahedron which have 0.7N/mm and 2.2 N/mm stiffness respectively. The experiments are performed under six different working conditions. The experiment results will show the effectiveness of the reflected force from the slave manipulator for improving the efficiency and stability of the teleoperation task.