• 한국정보통신학회논문지
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• 제12권10호
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• pp.1717-1722
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• 2008

스트레스 정도를 측정하기 위한 다양한 도구들이 많이 사용되고 있다. 스트레스 측정에는 심리측정과 생체측정이 있다. 어느 한쪽만을 고려하였을 경우 주관적이거나 객관적 결여가 발생한다. 그 문제점을 보완하기 위해 두 측정을 혼합한 새로운 스트레스 지수가 필요하다. 개인적 특성에 따라 측정 결과도 다양하게 나타나지만, 현재 사용되고 있는 측정도구를 바탕으로 한 일반적인 경우를 고려하여 연구하였다. 심리와 생체 측정 도구를 통해서 얻어지는 지수를 이용하여 통합적인 스트레스 지수를 얻는다. 그래서 임의로 4가지의 스트레스 측정도구를 사용한다. 각 측정도구에서 나온 결과에 대한 멀티지수가 나타나는데, 그 지수들을 각각 좌표평면에 나타내어 스트레스에 대한 균형성과 편향성을 분석하고 진단한다.

• International Journal of Precision Engineering and Manufacturing
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• 제1권1호
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• pp.111-117
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• 2000

One of the major limitations of productivity and quality in metal cutting is the machining accuracy of machine tools. The machining accuracy is affected by geometric errors, thermally-induced errors, and the deterioration of the machine tools. Geometric and thermal errors of machine tools should be measured and compensated to manufacture high quality products. In metal cutting, the machining accuracy is more affected by thermal errors than by geometric errors. This paper models the thermal errors for error analysis and develops an on-the-machine measurement system by which the volumetric errors are measured and compensated. The thermal error is modeled by means of angularity errors of a column and thermal drift error of the spindle unit which are measured by the touch probe unit with a star type styluses and a designed spherical ball artifact (SBA). Experiments show that the developed system provides a high measuring accuracy, with repeatability of $\pm$2$\mu\textrm{m}$ in X, Y and Z directions. It is believed that the developed measurement system can be also applied to the machine tools with CNC controller. In addition, machining accuracy and product quality can be also improved by using the developed measurement system when the spherical ball artifact is mounted on a modular fixture.

• 대한기계학회논문집
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• 제7권2호
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• pp.161-167
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• 1983

In this study the phenomenon of cutting stress which arises on cutting tools and work pieces in cutting process is investigated by rake angle of cutting tools and feed for this measurement, P$_{s}$-1 (high modulus, photolastic Inc.) was used as a cutting tool, P$_{s}$-3 (medium modulus, photolastic Inc.) was used as work piece and reduction apparatus was attached to the head stock, and orthogonal cutting was adapted as a cutting method and transparent glass was used to block the strain in the orientation of thickness. The followings are the results of this study. (1) Photoelastic experimental equipments have made it possible to make dynamic measurement and analyze stress distribution in cutting tool and work piece surface which has hitherto been conducted only in static measurement and analyzing method. (2) The maximum stress arising at tools and work pieces in cutting process is on the tool edge tip, and the maximum stress arising on the tip of cutting tools is equal to that on the contacting area of work pieces in values. (3) The distributions of maximum shear stress on certain parts of the cutting tools and work pieces are as follows; for cutting tools, .alpha.=12.deg., .alpha.=0.deg., .alpha.=-12.deg. in order, and for work pieces, .alpha.=-12.deg., .alpha.=0.deg., .alpha.=12.deg. in opposite order.der.

• 한국정밀공학회지
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• 제16권2호통권95호
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• pp.201-210
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• 1999

One of the major limitations of productivity and quality in metal cutting is the machining accuracy of machine tools. The machining accuracy is affected by geometric and thermal errors of the machine tools. Therefore, a key requirement for improving te machining accuracy and product quality is to reduce the geometric and thermal errors of machine tools. This study models geometric error for error analysis and develops on-machine measurement system by which the volumetric erors are measured. The geometric error is modeled using form shaping function(FSF) which is defined as the mathematical relationship between form shaping motion of machine tool and machined surface. The constant terms included in the error model are found from the measurement results of on-machine measurement system. The developed on-machine measurement system consists of the spherical ball artifact (SBA), the touch probe unit with a star type stylus, the thermal data logger and the personal computer. Experiments, performed with the developed measurement system, show that the system provides a high measuring accuracy, with repeatability of ${\pm}2{\mu}m$ in X, Y and Z directions.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1996년도 추계학술대회 논문
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• pp.101-106
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• 1996

Interactive Measuring part Program Generating Tools (IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions os the CNC were developed for an intelligent measuring and inspection systems on the machine tools. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executer and ROM writer. In order to automate measurement and inspection procedures in machine shops measuring G Code system was also proposed. Using the developed measuring G Code system on the machine tool untended measurement and inspection operation was able to be realized in FMS lines.

• 간호행정학회지
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• 제22권5호
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• pp.480-495
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• 2016

Purpose: The purpose of the study was to identify characteristics of nursing and caring concepts measured by nursing competencies or caring behaviors tools for general nurses working in acute care hospitals. Methods: Five major nursing literature databases were used to identify the relevant tools. The study included 19 nursing competencies tools with a total of 843 measurement items and 12 caring behaviors tools with 334 items. According to the International Council of Nurses (ICN)'s Competencies Framework and 8Cs suggested by Roach (1987) and Pusari (1998), the measurement items were classified by two researchers independently first and in agreement finally. Results: Competency of 'key principles of care' including sub-areas of the ICN Framework was most commonly found: on average 49.3% of nursing competencies items and 91.9% of caring behaviors items. 97.0% of the caring behaviors items were classified into one of six Cs: competence (27.5%), confidence (21.3%), compassion (17.1%), commitment (16.5%), communication (9.9%), or conscience (4.8%). Conclusion: Nursing competencies tools were more likely to measure 'what to do' focusing on tasks, while caring behaviors tools were to measure 'how to do' focusing on nurses' attitudes or values. Nursing practices should be evaluated with both nursing competencies and caring behaviors tools, considering that nursing and caring were differently conceptualized in the quantitative tools.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2004년도 추계학술발표회 발표논문집
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• pp.1353-1354
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• 2004

It was estimated by an analysis method thai the inner shell of HANARO reactor will be deformed due to pressure, loads, creep and growth during reactor operation. To confirm the analysis validity and safe operation of reactor, we developed tools to remotely measure the straightness of the inner shell located 12m below the pool top. The performance and the accuracy of the measurement tools have been verified through tests using a dummy inner shell and steel straight edge. The accuracy of the measurement shows very good results with a maximum error of 0.06mm by steel straight edge. The technical experiences described in this paper will be a good reference not only for the operation and maintenance of HANARO but also for the next performance of the measurement in the future.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.799-800
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• 2013

• 한국생산제조학회지
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• 제6권2호
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• pp.83-91
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• 1997

Interactive measuring Part Program Generating Tools (IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions of the CNC were developed for intelligent measuring and inspection systems on the machine tools. Machine tools. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executor and ROM writer. In order to automate measurement and inspection procedures in machine shops, measuring G Code system was also proposed. Using the developed measuring G Code system on the machine tool, untended measurement and inspection operation was able to be realized in FMS lines.

• 한국치위생학회지
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• 제19권1호
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• pp.1-17
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• 2019

This study investigates the overall research trends and related factors affecting the turnover of dental hygienists in Korea during the past 10 years (2007-2017) and analyzed the differences in the results of the research according to the main measurement tools. The literature review focused on turnover of dental hygienists in Korea. Inclusion criteria of selected studies were as follows: the domestic and foreign academic journals and theses published for the past 10 years (between 2007-2017). The most commonly used tool for measuring dental hygienist turnover was a tool developed by Lawler. The most used significant general characteristics is age and income, Job satisfaction (57.1%) and organizational commitment (40.0%) were the most frequently used predictors of turnover. The variables used for each turnover measurement tool were different, showing that the study results was different from according to the variables and significance level. Although there have been many studies related to the turnover of dental hygienists, different results have been shown depending on the measurement tools. When conducting research related to dental hygienist turnover, specific and clear presentation of measurement tool selection or development is needed.