• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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• pp.1399-1402
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• 1997

Design methodology of Interactuve Measuring Part Program Generating Tools(IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions of the CNC was described in this paper. Measuring G codes have been designed according to probe ste up, basic and applied inspection items by using measuring arguments. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executor and ROM writer. Using the developed measuring G code system on the machine tool, untended measurement and inspection operation was able to be realized in precision FMS lines.

• 한국정밀공학회지
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• 제15권4호
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• pp.91-97
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• 1998

Design methodology of Interactive Measuring Part Program Generating Tools(IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions of the CNC was described in this paper. Measuring G codes were designed according to geometric form, precision attributes, relations between parts, datum hierarchies, and relevant technological data by using measuring arguments. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executor and ROM writer. Using the developed measuring G code system on the machine tool, untended measurement and inspection operation was able to be realized in precision FMS lines.

• 한국생산제조학회지
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• 제25권6호
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• pp.445-451
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• 2016

The Inconel 718 alloy is a well-known super-heat-resistant alloy and a difficult-to-cut material. Inconel 718 with excellent corrosion and heat resistance is used in harsh environments. However, the heat generated is not released owing to excellent physical properties, making processes (e.g., adhesion and thermal fatigue) difficult. Tool condition monitoring in machining is significant in reducing manufacturing costs. The cutting tool is easily broken and worn because of the material properties of Inconel 718. Therefore, tool management is required to improve tool life and machinability. This study proposes a method of predicting the tool wear with non-contacting sensors (e.g., IR thermometer for measuring the cutting temperature and a microphone for measuring the sound pressure level in machining). The cutting temperature and sound pressure fluctuation according to the tool condition and cutting force are analyzed using experimental data. This experiment verifies the effectiveness of the non-contact measurement signals in tool condition monitoring.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.433-439
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• 2021

The purpose of this research is to discuss the concept of measuring cryptocurrency literacy, especially Bitcoin. This research uses a qualitative approach. The data source comes from a literature review on cryptocurrency and opinions from Bitcoin academics, traders, and investors. Data collection was conducted through desk evaluations and interviews to determine what attributes should be considered for assessing Bitcoin literacy. The results of a literature review reinforced by discussion show that eight attributes can be used to assess basic level Bitcoin literacy, namely Bitcoin supply, regulatory guarantees, transaction recording, the role of third parties, treatment of transfer transactions, initial coin offerings, the smallest Bitcoin unit, and conversion with another currency. These eight attributes can be used to measure Bitcoin literacy through various questions with the choice of true, false, and do not know answers. This research is essential because there is no method to measure Bitcoin literacy. This research can be a measuring tool that becomes a reference or standard in assessing or measuring Bitcoin literacy. This study's results provide benefits to the development of science in the form of a tool that can be used to assess Bitcoin literacy and become a standard in assessing a person's level of understanding of Bitcoin.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2001년도 춘계학술대회 논문집(한국공작기계학회)
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• pp.143-148
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• 2001

Volumetric error measurement and calibration of a coordinate measuring machine are studied by using a Ball-Bar artifact. Examples of the Ball-Bar design are shown using inbar materials and precision steel balls. Also, for the uncertainty error using the Ball-Bar is discussed. Method of Ball-Bar artifact and the analysis of the error vectors are proposed. Using the Ball-Bar data, we studied the method of volumetric errors ana]ysis of a coordinate measuring machine.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1999년도 추계학술대회 논문집 - 한국공작기계학회
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• pp.170-175
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• 1999

Noncontact measuring methodology of 3-dimensional profile using CCD camera are very attractive because of it's high measuring speed and its's high sensitivity. Especially, when projecting a grid pattern over the object the captured image have 3 dimensional information of the object. Projection moire extract 3-D information with another grid pattern in front of CCD camera. However phase measuring profilometry(PMP) obtain similar results without additional grid pattern. In this paper, new method for grid pattern generation system by polygonal mirror and Laser Diode. This system is applied the projection moire and the PMP.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2005년도 춘계학술대회 논문집
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• pp.77-80
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• 2005

In this paper we write to the result of measuring human body shape method-ibs-2000 for human body shape measurement. The size measurement units and measuring speed is very inportant to efficiency of human body shape measurement units. By polygonal mirror system, the size measurement units and measuring time can be retrench.

• 인지과학
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• 제29권1호
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• pp.17-38
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• 2018

본 연구의 목적은 도구를 사용하더라도 닿지 않는 거리에 놓인 대상에서 도구 길이에 따라 지각된 거리가 상이한 정도로 압축되는지, 그리고 가리키는 대상에서만 도구 길이에 따라 지각된 거리가 압축되는지를 검증하는 것이다. 자기중심적 거리를 측정한 실험 1은 도구를 사용하여 닿지 않는 거리에 놓인 대상에서도 도구 길이가 길어질수록 대상까지의 거리를 더 가깝게 지각한다는 것을 발견하였다. 자기중심적 거리를 측정한 실험 2는 가리키는 대상과 가리키지 않는 대상이 시야에 공존할 때 도구 길이가 가리키지 않는 대상까지의 거리 지각에 영향을 미치지 않는다는 것을 발견하였다. 실험 3은 실험 2와 동일한 환경에서 표적과 측정 대상 사이의 거리인 대상중심적 거리를 측정하여 도구 길이가 표적의 거리지각에만 영향을 미친다는 것을 발견하였다. 이와 같은 실험 결과는 도구를 사용하여 닿을 수 없는 거리에서도 지각된 거리의 압축 현상이 나타나며 이와 같은 지각된 거리의 압축 현상은 가리키는 대상에 국한된다는 것을 시사한다.

• 한국산학기술학회논문지
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• 제22권3호
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• pp.138-147
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• 2021

본 연구는 우리나라 간호사의 건강증진행위 측정을 위한 검증된 도구가 부족한 실정으로 간호사의 간호환경 특성을 반영하면서 그 사용이 검증된 도구 개발이 필요함에 따라 한국 간호사의 건강증진행위 측정도구를 개발하는 것을 목적으로 한다. 본 연구는 2019년 1월부터 12월까지 간호사 총 530명을 대상으로 실시하였으며 연구방법으로는 문헌 고찰 및 포커스 그룹 면담을 실시하고, 타당성과 신뢰성을 측정하기 위해 데이터 분석을 하였으며, IMB(Information-Motivation-Behavioral Skills) 모델을 적용하여 개념 틀을 구성하였다. 그 결과 간호사로서의 자아개념(2 문항), 병원생활관리(4 문항), 건강에 대한 지식 및 정보(5 문항), 신체적·정신적 스트레스관리(3 문항), 근무적응(2 문항)의 5가지 요인 16 문항으로 도출되었다. 모델 적합도는 346.23 (��<.001), PNFI는 .60, PCFI는 .63으로 허용 기준을 충족했으며 RMSEA는 .10이었다. GFI .88, CFI .85, IFI .85는 기준치에 적합한 것으로 확인되었다. 모든 항목은 Cronbach의 �� .85로 안정적인 신뢰성을 확보하였다. 본 연구에서 개발 한 간호사의 건강증진행위 측정도구는 간호 실무 측면에서 간호사의 건강 증진 행동을 측정하는 도구로 사용될 것이며 간호사의 건강 증진 행동을 폭넓게 이해하는 데 도움이 될 것이다.

• 한국공작기계학회논문집
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• 제11권2호
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• pp.95-102
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• 2002

Due to the development of the CNC machine tool and CAM software, sculptured surface machining can be broadly used in die and mold industries and ball end milling process is often used for the sculptured surface machining. It is found out how feedrate affects the precision of the machining and also tried to study the most suitable feedrate in specific cutting condition. Two eddy current sensors were used far measuring tool deflections of X, Y axis, dynamometer for cutting force and roundness tester for roundness. It was found that the tool deflection is getting better as tool path is going to further from the center of convex surface. The reason is that the cutting force is increased as the tool approaches to the center. Examining the roundness, cutting force and tool deflection characteristics, it was found that the most suitable feedrate is 90mm/min in convex surface and 120mm/min in concave surface.