• 한국의료질향상학회지
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• 제4권2호
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• pp.260-278
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• 1997

Background : Quality of professional nursing care is the most essential factor for survival and growth of nursing profession. Then, nursing professionals have responsibility for the evaluation of quality of professional nursing care. The purpose of this study was to develope an evaluation tool of nursing care for patients received gastrointestinal surgery with general anesthesia. This study was a primary work for the developement of a computer program for the evaluation of nursing care. Methods : This study was done through some consecutive steps. They were (1) Developement of items for the tool (2) Developement of an evaluation tool of nursing care quality for the G-I surgery patient (3) Test of reliability and validity of the tool. Two groups of experts and expert pannels who had much experience of the QA and the care of G-I surgery patients participated for developement of the items. 85 nursing records were used for the test of reliability and validity of the developed tool. The evaluation tools were developed with two types of scoring, norm-referenced tool and criterion-referenced tool. Results The system of items for tool was evaluation area evaluation item-indicator. There were 7evaluation areas which contained 32evaluation items which contained 7lindicators. Evaluation areas 1, 2, 3, 4 were for the evaluation of process and 5, 6, 7 were for the evaluation of outcome of nursing care for G-I surgery patient. For the test of interrator reliability, correlation coefficients of each scores of items and intragroup correlation coefficients were calculated. The average correlation coefficients between two rators were 0.65, 0.54 and the intragroup correlation coefficient were 0.99 and 1.00 by the types of scoring. The Cronbach alpha coefficients of the tools were 0.54 and 0.46 by the types of scoring. The average content validity index of the items was 0.95 from 4 pairs of experts. Because there were significant differences between some scores of quality of nursing care of 3 general hospitals regardless of the types of scoring, the tools could be thought to have some construct validity. And also, there were significant correlations between some scores of quality of nursing care and admission days and admission days after surgery regardless of the types of scoring, the tools could be thought to have predictive validity. Conclusion In this study, the evaluation tool of nursing care was developed for the very specified group of patient, G-I surgery patient. And the items were developed and tested by the experts of nursing practice. Because of these reasons, it was supposed that the tool could be used effectively in nursing pratice. And the procedures for the development and the test of the evaluation tool of nursing care in this study were supposed to be used for the developement of other tools.

• 한국치위생학회지
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• 제23권1호
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• pp.55-62
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• 2023

Objectives: The purpose of this study was to test the reliability and validity of an assessment tool for dental hygienists' consideration of patients with mild disabilities. Methods: Thirty-seven preliminary questions were compiled through literature review, and thirty-two questions were selected through content validity testing by eight experts. Two hundred and three dental hygienists completed the assessment tool as an online survey. The construct validity, internal consistency, and test-retest reliability of the tool were investigated using the SPSS 26.0 program. The construct validity was assessed using exploratory factor analysis. The internal consistency was assessed using Cronbach's alpha. The intraclass correlation coefficient (ICC) value with 95% confidence intervals was calculated for test-retest reliability. Results: Ten items and four factors were selected through exploratory factor analysis. The internal consistency reliability of the tool was found to be Cronbach's alpha=0.658, and test-retest reliability was found to be ICC=0.812. Conclusions: An assessment tool of care for patients with mild disabilities by dental hygienists is a reliable and valid tool suitable for the job characteristics of dental hygienists. It can be used in clinical practice and research.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 추계학술대회논문집 - 한국공작기계학회
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• pp.63-67
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• 2000

A tool holder system has been designed to measure cutting forces in diamond turning. This system includes a 3-component piezo-electric tranducer. In this research, tool holder system is modeled by considering the element dividing, material properties, and boundary conditions using MSC/PATRAN. Mode and frequency analysis of structure is simulated by MSC/NASTRAN, for the purpose of developing the effective design. In addition, tool holder system is verified by vibration test using accelerometer. This system will aid to the development of Fast Tool Servo (FTS)

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.693-696
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• 2002

This study examined the effects of the testing temperature on the mechanical properties of the carbon tool steel (SK4M) for flat spring. Hardness test and fatigue test were performed at room temperature ($20^{\circ}C$). Tensile test and creep test were performed at temperature range $20^{\circ}C$ ~$160^{\circ}C$. The micro-vickers hardness values of SK4M was Hv=584. The Elastic modulus, tensile strength and yield strength of SK4M at 160t test temperature were decreased 0.92 time, 0.97 time and 0.82 time those of SK4M at 2$0^{\circ}C$ test temperature, respectively. The maximum creep strain for 100hr at creep temperature ($80^{\circ}C$ ~$160^{\circ}C$) and creep stress ($37.4Kgf/\textrm{mm}^2$ ~$93.6Kgf/\textrm{mm}^2$) was 0.572%. The fatigue limit of SK4M was $94Kgf/\textrm{mm}^2$.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(2)
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• pp.93-96
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• 2002

It is said that the verification effort occupies about 50-70 percent of the total effort of a System-On-A-Chip. This paper aims to develop a test bench automation tool based on the abstraction of the interface protocols. This tool will allow designers to describe their test benches in a high level language such as C rather than VHDL or Verilog. It helps designers to save their verification time and effort.

• 한국정밀공학회지
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• 제26권10호
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• pp.7-11
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• 2009

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제8권5호
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• pp.551-562
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• 2002

디지털 TV 소프트웨어는 디지털 방송을 위한 수신기 시스템으로 가변적이고 복잡한 구조의 방송용 데이타를 대량으로 처리한다. 따라서 처리하는 데이타 구조의 복잡성과 데이타량의 방대함 때문에 디지털 TV 소프트웨어의 테스트를 위한 테스트 데이타 생성 작업은 쉽지 않다. 많은 시간과 비용이 소요될 뿐 아니라 디지털 TV를 위한 동영상, 압축 및 다중화에 대한 표준인 MPEG-2(Moving Picture Experts Groups-2)에 대한 지식도 필요하다. 본 논문에서는 디지털 TV 소프트웨어를 위한 MPEG-2 TS 형태의 테스트 데이타를 자동으로 생성하는 도구를 개발하였다. 이를 통해, 디지털 TV 소프트웨어에 대한 전문 지식 없이도 적은 비용으로 필요한 테스트 데이타를 획득할 수 있고 수작업으로 인해 발생할 수 있는 실수를 줄여 테스트 데이타의 신뢰도를 향상시킬 수 있다. 또한 MPEG-2 표준에 대한 정보를 데이타 베이스로 구축하고 이를 기반으로 테스트 데이타를 생성하므로 구성 테이블의 구조와 개수가 가변적인 MPEG-2 표준의 특성을 쉽게 수용할 있다.

• 대한기계학회논문집A
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• 제26권11호
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• pp.2336-2341
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• 2002

When WC and group IV elements are added to Ti(C,N)-Ni cermet, microstructures of the cermet is changed. The change effects directly on the property of the material. In this study, the amount of WC and group IV elements of Ti(C,N) cermet tool was investigated. The composition of WC was changed from 5 to 20wt% to determine the effect of WC on the cutting performance of cermet tool. The more WC was added, the longer the tool life of the cermet tool was. The cermet with lwt% ZrC and l4wt% WC showed the best cutting performance among the investigated cermet tools. The cutting performance of cermet cutting tools suggests the possibility in interrupted cutting for reliability test experimentation was performed repeatedly with $Ti(C_{0.7},N_{0.3})- l4WC-1ZrC-20Ni$ cermet tool machining SCM440. The flank wear of cermet cutting tool at given time condition is suitable for Normal distribution and Log normal distribution by Chi squared test.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.261-264
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• 2004

This paper presents the design and test of elliptical vibration assisted cutting tool post. It is actuated by two piezoelectric actuators which are connected to the moving part through the elastic hinge with its role of imposing the preliminary pressures. These two actuators are located at right angles so that the resulting tool tip moves like a two-dimensional ellipse. Also, the tool post is activated within the region of linear actuation in order to overcome the distorted elliptical motion. For the precise measurement of the displacement of the tool tip, three-dimensional experimental apparatus was designed and the strokes of the tool post in major and minor axes were measured. The results show that the tool post can produce the variety of vibration locus from a circle with a radius of 5 ${\mu}{\textrm}{m}$ to an ellipse with a major axis, a =10 ${\mu}{\textrm}{m}$, and a minor axis, b =2.5 ${\mu}{\textrm}{m}$

• 한국시뮬레이션학회논문지
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• 제27권1호
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• pp.25-32
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• 2018

본 논문은 모델 기반 내장형 소프트웨어의 자동 생성 코드에 대한 효율적인 신뢰성 시험 절차와 구체화된 동적 시험 방안에 대해서 제시하고 있다. 모델 정적/동적 시험 각각을 코드 정적/동적 시험 전에 수행함으로서 코드 신뢰성 시험 수행의 이점이 있음을 기술하였다. 또한, 모델과 코드의 신뢰성 시험 상관관계를 모델의 경우 Model Advisor와 Verification and Validation tool, 코드의 경우 Polyspace와 LDRA를 이용하여 살펴보고 제시한 절차대로 수행한 신뢰성 시험의 결과를 보여주고 있다.