• 한국생산제조학회지
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• 제9권2호
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• pp.138-143
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• 2000

The establishment of a practical ultra-precision grinding technique using Diamond and CBN wheels is one of the major key technolo-gies to improve production techniques for machine-to-difficult materials without finishing process such as lapping and polishing. But the special efficient dressing technique for ultra-fine grit type grinding wheels to stabilize the grinding ability was not developed. Recently electrolytic in-process dressing technique is proposed to ultra-fine grit type metal bonded diamond wheels to protrude abra-sives continuously from the tool surface. This technology can be widely used to surface grinding and cylindrical grinding but cannot be used efficiently to internal grinding because of the electrode attachment trouble. This paper describes the effect of interval type electrolytic dressing as proposed newly to cast iron bonded diamond wheel for efficient internal grinding with mirror type high quality ground surface.

• Journal of Biosystems Engineering
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• 제23권6호
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• pp.615-620
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• 1998

The nondestructive internal quality evaluation of agricultural products has been strongly required from the needs for individual inspection. In recent, ultrasonic wave has been considered as a solution for this problem. It transmit well through most materials and can handle safely and easily. However, specially in a watermelon, it is known that general frequency band (higher than 20kHz) ultrasonic waves do not transmitted well due to severe attenuation. The objectives of this study were to find out the proper waveform and frequency of the ultrasonic waves that transmit well inside the watermelon, and to analyze the transmitted waveform in order to make clear the structure of wave propagation in watermelon. The result of several experiments showed that 2kHz shear wave was the most suitable for the detection of internal cavity in the watermelon. Also, it was found that the surface wave did not influence the directly transmitted bulk wave. These results could be a basis of application of ultrasonic wave on the evaluation of internal quality of the watermelon.

• 한국정밀공학회지
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• 제14권7호
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• pp.22-28
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• 1997

In this paper, We have studied internal quality incluiding chemical compositions, microscopic structure and nonmetalic inclusion of test material. We have analyzed dynamic characteristics of cutting resistence and compared chip treatment of the test material. In analyzing internal quality, all of the test material have typical ferrite+pearlite structure. But, nonmetallic inclusion has oxide and sulfide inclusion has oxide and sulfide inclusion in medium carbon steel, mainly sulfide inclusion is existed in S-free cutting steel. In Ca+S-free cutting steel, calcium aluminate and sulfide complex inclusion, had low-melting point, as deformation of sulfide and oxide inclusion is existed. Machining characteristics, cutting resistence is maximum in medium carbon steel. Chip treatement are excellent in S-free cutting steel, similar to the Ca+S free cutting steel and medium carbon steel.

• 실천공학교육논문지
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• 제14권1호
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• pp.37-48
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• 2022

본 연구는 IATF 16949 자동차 품질경영시스템 내부심사가 기업의 성과에 미치는 영향에 대한 분석을 통해 기업의 내부심사 현황을 파악하고, 기업의 내부심사 프로세스 활성화를 위한 대안을 제안하고자 한다. IATF 16949 자동차 품질경영시스템 내부심사의 특성을 나타낼 수 있는 '내부심사원 역량, 내부심사 기획, 내부심사 시행, 인프라, 문화/환경 및 최고경영자 지원'이 기업의 내부성과 및 경영성과에 미치는 영향 관계를 실증분석으로 규명하였다. 또한 기업의 성과를 향상시킬 수 있는 요인으로 제시되는 매출액 기준에 따른 기업의 규모 및 인증유지기간을 조절변수로 기업의 성과와의 관계에서 어떠한 조절 효과를 보이는 지 확인하였다. 회수된 설문서를 SPSS 프로그램을 활용하여 기술통계, 탐색적 요인분석과 신뢰성 분석 및 다중회귀분석을 하였고 연구결과를 분석한 결과, '독립변수인 내부심사 기획, 내부심사 시행, 문화/환경 및 최고경영자 지원'이 매개변수 및 종속변수인 기업의 내부성과 및 경영성과에 영향을 주는 것으로 나타났다.

• 한국병원경영학회지
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• 제22권4호
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• pp.1-15
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• 2017

This study was designed to analyze the effect of servicescape and human service quality on patients' internal response and their behavioral intention in dental care organizations. Self-administered survey questionnaires with structured instruments were developed, and a total of 226 responses were used for statistical analyses using SPSS Windows version 18.0 program and AMOS 18.0 program. Major findings of the study are as follows. First, among other servicescape components, air condition environment was found to have a positive effect on patients' cognitive and physiological responses, while signals and symbols had a positive effect on cognitive and emotional responses. Second, the competence, among other factors of the human service quality, had positive influence on cognitive and emotional responses, while customer understanding affected positively on emotional response. Third, none of the servicescape components showed a direct effect on patients' behavioral intention, but their influence was mediated by internal responses. However, customer understanding, among other human service quality factors, had a direct effect on patients' behavioral intention. Fourth, emotional response, among other internal response factors, proved to have positive influence on behavioral intention. Results from this study suggest that dental care service providers can increase their competitiveness and customer satisfaction by understanding and improving the most important areas of servicescape and human service quality.

• 대한한방내과학회지
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• 제31권4호
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• pp.880-891
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• 2010

This study is about a comparison of controlled and uncontrolled hypertension groups regarding comprehensive diagnosis of Qi blood water and quality of life. We surveyed "controlled and uncontrolled hypertension patients" using questionnaires for comprehensive diagnosis of Qi blood water, SF-36 and HTN QoL (Measurement Scale for the quality of life in hypertensive patients). There was no difference in comprehensive diagnosis of Qi blood water between the controlled and uncontrolled hypertension groups. Within the controlled hypertension group, the patients diagnosed with a Qi deficiency, Qi stagnation, Qi counterflow, blood deficiency, and water retention received lower total scores in SF-36 and HTN QoL than in undiagnosed patients. Within the uncontrolled hypertension group, the patients diagnosed with Qi deficiency, blood deficiency, and water retention got lower total scores in SF-36 and HTN QoL than in undiagnosed patients. These results were statistically significant. These results are insufficient that we and use comprehensive diagnosis of Qi blood water for a diagnosis tool of hypertension. But if we have better studies that make up for weak points, these results will help to make a diagnosis tool for hypertension.

• 대한한방내과학회지
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• 제33권3호
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• pp.327-337
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• 2012

Objectives : The purpose of this study was to report the clinical effect of short- term admission program on primary palmar/plantar hyperhidrosis in children and adolescents. Methods : Between January 2011 and January 2012, a total of 11 patients with clinical diagnosis of primary palmar/plantar hyperhidrosis were treated with hospitalization which consisted of iontophoresis, electro-acupuncture, herbal medicine, topical therapy and physical therapy. The effects were evaluated as quality of life with dermatology life quality index (DLQI), severity of discomfort using visual analogue scale (VAS), and the patients' subjective satisfaction. We analyzed the patients' improvement before and after admission treatment, as well as six month later. Results : After treatment, the 11 patients' quality of life and severity of discomfort improved significantly. They also were satisfied with oriental treatments for hyper hidrosis. Six months later, 6 of 11 patients had visited the hyperhidrosis clinic. Their symptoms had improved and remained stable. Conclusions : The short-term admission program is effective on primary palmar/plantar hyperhidrosis. Further studies with a larger number of cases will be needed in the future.

• Mass Spectrometry Letters
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• 제4권4호
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• pp.75-78
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• 2013

A gas chromatography/mass spectrometric (GC/MS) method was developed as a candidate reference method for the accurate determination of essential fatty acids (linoleic acid, ${\alpha}$- and ${\gamma}$-linolenic acids) in food supplemental oil products. Samples were spiked with three internal standards (stearic acid-$d_{35}$, $^{13}C_{18}$-linoleic acid, and $^{13}C_{18}$-${\alpha}$-linolenic acid). Samples were then subject to saponification, derivatization for methylation, and extraction by organic solvent. For GC/MS measurement, an Agilent HP-88 column, designed for the separation of fatty acid methyl esters, was selected after comparing with other columns as it provided better separation for target analytes. Target analytes and internal standards were detected by selected ion monitoring of molecular ions of their methyl ester forms. The GC/MS method was applied for the measurement of three botanical oils in NIST SRM 3274 (borage oil, evening primrose oil, and flax oil), and measurement results agreed with the certified values. Measurement results for target analytes which have corresponding isotope-labeled analogues as internal standard were calculated based on isotope dilution mass spectrometry (IDMS) approach, and compared with results calculated by using the other two internal standards. Results from the IDMS approach and the typical internal standard approach were in good agreement within their measurement uncertainties. It proves that the developed GC/MS method can provide similar metrological quality with IDMS methods for the measurement of fatty acids in natural oil samples if a proper fatty acid is used as an internal standard.

• 한국비블리아학회지
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• 제32권1호
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• pp.89-113
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• 2021

본 연구는 공공도서관에서 이루어지는 내부마케팅이 공공도서관 사서의 직장생활의 질에 미치는 영향 관계를 실증적으로 규명한 것이다. 이를 위하여 서울 소재의 공공도서관에서 근무하는 현직 사서를 대상으로 2020년 7월 25일부터 59일 동안 네이버폼을 통하여 설문조사를 실시하였으며, 회수된 120부의 응답지를 통계 프로그램인 IBM SPSS 25를 활용하여 요인분석, 신뢰도 분석, 빈도분석, 상관분석, 다중회귀분석을 실시하였다. 본 연구의 결과, 공공도서관의 내부마케팅은 사서의 직장생활의 질에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 내부마케팅의 개선방안으로는 체계적이고 지속 가능한 내부마케팅 제도의 운영, 고학력 사서에 대한 경력 인정과 적절한 보상, 사서의 임금체계에 대한 개선, 경영층 지원과 권한위임을 중심으로 한 내부마케팅 제도의 활성화를 제언하였다.

• 한국항만경제학회지
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• 제22권1호
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• pp.125-149
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• 2006

The main purpose of this study is to develop new measurement device of the quality of terminal service, applying the existing research output of service marketing to the specific industrial aspect of container terminal. Especially we tried to help marketing managers present the points of effective marketing strategy with each dimension of service quality. To achieve this aim, we defined the service quality demensions of container port as the following three ones; the internal, the external, and the interactive qualities. The applied measuring instruments could be divided into three dimensions by carrying out factor analysis. Additionally, by analyzing the relative effects of the three dimensions of service quality on customer satisfaction, we found that the relative importance are as follows; interaction quality>internal quality> external quality. We confirmed that the three dimensions of service quality could affect customer loyalty and information, through customer satisfaction.