• 대한두경부종양학회지
• /
• 제20권2호
• /
• pp.143-146
• /
• 2004

Background and Object: The role of fine needle aspiration cytology (FNAC) and frozen section (FS) in management of thyroid neoplasms continues to generate considerable controversy. We reviewed our current experience to determine the clinical utility of FNAC and FS in our surgical management and investigated reliability of FNAC and FS in planning the extent of thyroid resection. Material and Method: 212 patients who had operations for thyroid disease from May 1996 to November 2003 were included our retrospective study. FNAC was undertaken in 175 patients and FS was done in 148 patients. Result: The sensitivity and specificity of FNAC were 72.1% and 100%, respectively, and those of FS were 67.2% and 100%. The results of FNAC were benign (n=72) , malignancy (n=31), indeterminate (n=9), and nondiagnostic (n=63). The results of FS were benign (n=95), and malignancy (n=53). The 9 indeterminate cases on FNAC were benign (n=6) and malignancy (n=3) on final pathology, and benign (n=7) and malignancy (n=2) on FS. The false negative of FNAC were micro papillary carcinoma (n=6) and follicular carcinoma (n=6). The false negative of FS were micropapillary carcinoma (n=10) and follicular carcinoma (n=2). Conclusion: When results of FNAC are interpreted as indeterminate, FS is a valuable tool. FS is helpful in determining the extent of thyroidectomy when results of FNAC were follicular neoplasm. However we always concerned about micropapillary carcinoma and follicular carcinoma although FNAC and FS were benign.

• 한국지반환경공학회 논문집
• /
• 제22권2호
• /
• pp.15-23
• /
• 2021

오염총량 개념을 반영한 매립장 사후관리종료제도 개선방안을 수도권매립지 제1매립장을 대상으로 적용하여 분석하였다. 매립가스 모델을 통해 분석한 메탄 잔여비율은 총 발생 가능량인 2,521×106 Nm3에 대하여 2020년 8.8%, 2030년 7.0%, 2040년 6.5%이었다. 2020년 이후의 표면발산 메탄량에 2005~2019년의 평균 산화율 89.1%를 적용할 경우, 실제 배출기준 메탄 잔여율은 2020년 1.01%, 2030년 0.76%, 2040년 0.70%로서 2025년 이후 메탄이 전량 표면 발산되어도 2019년 기준 표면 발산량보다 적어 사후관리 종료가 가능하였다. 침출수 수질에 대한 추이분석 결과, BOD는 2024년, COD 2047년, T-N은 2117년경에 배출허용기준을 만족할 수 있을 것으로 추정되었다. 사후관리종료를 배출부하량을 기준으로 변경할 경우 BOD는 현 시점에서 그리고 COD도 수년 내 사후관리종료가 가능하나, T-N의 경우 2041년 이후에나 가능하여 근본적인 관리방식의 전환이 필요한 것으로 분석되었다.

• 디지털융복합연구
• /
• 제10권10호
• /
• pp.465-473
• /
• 2012

모바일 기기와 클라우드 컴퓨팅 기술의 도입은 N 스크린 서비스와 같은 새로운 콘텐츠 서비스를 가능하게 하였다. 새로운 콘텐츠 서비스 환경을 위하여 상호운용성과 다중 플랫폼(multi-platform)을 지원하는 DRM(digital rights management) 기술들이 개발되고 있으나 아직까지 콘텐츠 서비스 가입 변경에 의한 콘텐츠의 이동이나 지원 단말의 구매 등 여러 면에서 사용자에게 불편함을 초래하고 있다. 본 논문에서는 가입 서비스와 상관없이 콘텐츠의 자유로운 이동을 지원하고 사용자가 소유한 다양한 스마트 기기에서 DRM이 적용된 콘텐츠를 자유롭게 사용할 수 있도록 클라우드 컴퓨팅 기반의 DRM 서비스 모델로써 DRMaaS(DRM-as-a-Service) 모델을 제안한다.

• 간호행정학회지
• /
• 제10권2호
• /
• pp.211-218
• /
• 2004

Purpose: The purpose of this study was to examine the core competency and career commitment of the preceptors to identify utility of the preceptorship as career management program. Method: The subjects were 107 clinical nurses who were working in one university hospital composed of the head nurses(n=27), non-preceptors(n=28), new graduate nurses(n=26) and preceptors(n=26). Demographic characteristics, core competency and career commitment were measured. The core competency was evaluated by the head nurses, non-preceptors, new graduate nurses, and preceptor themselves. And the career commitment was compared between the preceptors and non-preceptors. For data analyses, percentage, mean, t-test, ANOVA were adopted with the use of SPSS WIN 10.0. Result: The results of this study showed that the core competency of the preceptors was evaluated excellently by all subjects. In three domains, there were no significant difference in role model, socialization facillitator and educator except for learning experience planning between the head nurses, non-preceptors, new graduate nurses and preceptors. The career commitment was significant difference between the preceptors and non-preceptors. Conclusions: The finding above indicated that the preceptorship utilized the improvement of the core competency and career commitment of the preceptors as career management program. therefore, continually, the effort and interest for development of the preceptorship can be a remarkable contribution for nurses' career management in nursing organization.

• 경영과학
• /
• 제31권4호
• /
• pp.93-106
• /
• 2014

This paper investigated customers' willingness to pay (WTP) for the integrated news platform, which is a paid digital news service provided by Korean newspapers. The integrated news platform has been widely employed and regarded as an alternative to recover dramatically decreasing sales of newspapers since N-Screen era began. This study employed a conjoint analysis to examine WTP for the integrated news platform and its attributes. According to the results, WPT for the integrated news platform was estimated as 4543.6 won, which is only 30.3% of the real price. Digitalized newspaper and premium news were found to be significant attributes explaining customers' WTP. The results of this paper implies that present marketing strategies for the integrated news platform of Korean newspapers should be reconsidered and revised.

• 가정과삶의질연구
• /
• 제7권2호
• /
• pp.61-70
• /
• 1989

The present study investigated characteristics of Korean hourehelds in the expanding stage of the family life cycle depending on decision-making of current and planned credit card use. Households which were selected for this study had at least one dependent child enrolled in primary, middle, or high school, 1998. Regarding current and planned credit card use, credit card holder (n=379) and non-holder (n=259) households and continuous (n=331) and discontinous (n=47) credit card holder households were compared. Comparisons were perfomed by t-test, one-way ANOVA, and X2-test. Related factors were households demographic characteristics, financial management behavior, perceived financial well-being, and attitudes toward credit cards. Findings indicated that holder households tended to be younger, better educated, white-collar workers, and of a higher economic status than non-holders. In comparison to non-holder households, credit card holder households had more favorable atti udes toward credit cards, reported more financial management practices, experienced less financial unbalance, and were more satisfied with their household finaces. Compared to discontinuous credit card holder households, continuous card holder households tended to be larger, have better educated wives and husbands, and have husbands who were white-collar workers. They were more likely to have higher average monthly income than discontinuous holder households. Continuous card holder households also had more favorable attitudes toward credit cards, and more strongly believed and expected financial improvement of their households, compared to discontinuous card holder households.

• Journal of Ginseng Research
• /
• 제9권1호
• /
• pp.15-23
• /
• 1985

The study was carried out to confirm the changes of soil physico-chemical properties and population of Fusarium solani by soil managements at preplanning fields for ginseng cultivation. Soil porosity and aggregation had been significantly increased during the managements while exchangeable nitrogen content and bulk density of the soil had been decreased. Available phosphate and exchangeable potassium content, in addition, seemed to be slightly increased. And soil aggregation showed positive correlation with clay, organic matter, soil moisture, and Ca content in the soil but negative with K content. Decrease rate of NH4-N and NO3-N content after soil managements were 55% and 41% in average, respectively. And better decrease effect for NH4-N was obtained in sand loam soil whereas no effect for NO3-N with soil textures. The more ploughing seemed to result in less propagules of F solani in the soil, however there was non significant decrease in population of the pathogen after the soil management. Number of F. solani in soil was significantly less in the fields where gramineous and leguminous crops had been grown as a precrop than other crops tested. Meanwhile there was no correlation between soil texture and population of the pathogen in the soil.

• 경영정보학연구
• /
• 제11권1호
• /
• pp.133-144
• /
• 2009

오늘날 eCRM은 인터넷 홈페이지를 방문하는 고객 정보를 체계적으로 관리하고 활용하기 위한 기업용 정보 시스템으로 주목받고 있다. 본 논문은 국내 유수의 유가공 업체 N사가 eCRM을 도입하여 활용한 사례에 대한 연구이다. N사가 eCRM을 도입하여 웹 로그 분석을 실시하고 고객별 최적화 서비스 도구를 이용할 수 있게 되면서, 이를 통해 정보를 분석하고 마케팅 활동에 활용한 사례를 연구하였다. 특히 본 연구에서는 유가공 업체와 같은 제조업체에서 인터넷 홈페이지를 통한 프로모션 활동과 연계한 eCRM 솔루션 도입 과정에 대하여 분석하였다. 또한 eCRM을 기업에 도입한 후 활용 범위와 효과에 대하여 논하였다.

• 산업공학
• /
• 제22권4호
• /
• pp.347-358
• /
• 2009

Panning tasks caused by both a small screen and the lower resolution of handheld devices are known to decrease the usability of a mobile internet service. To solve this problem, we proposed FTND, an improved version of Tap-N-Drag widely used in various mobile web browsers. 30 participants performed the panning tasks with FTND embedded in combinations of 2 panning directions of Push Background user interface and Push Viewpoint user interface and 5 panning ratios of 100% (a panning ratio of Tap- N-Drag), 300%, 500%, 700%, and 900%. The usability of FTND was assessed by an objective performance and a subjective preference. The objective performance was measured by a task completion time, the number of clicks, and the number of pixels. The subjective preference was measured by satisfaction, accuracy and ease of use. Push Viewpoint user interface at the panning ratios of 300%, 500%, and 700% proved to be the most efficient way for panning tasks with small handheld devices when performing the task by using the right hand thumb.

• Asia pacific journal of information systems
• /
• 제32권2호
• /
• pp.307-326
• /
• 2022

Currently, Mobile-commerce is active around the world, and consumers' online activities have changed significantly from pc-base to mobile-base. Unlike IT advanced countries such as the United States, which experienced PC-based online commerce (hereafter, PC-commerce) before Mobile-commerce, developing countries such as Vietnam have a relatively short history of PC-commerce. Consumers' experience with PC-commerce may affect their acceptance and use of Mobile-commerce. In this study, we tried to see if different online commerce histories differently affect consumers' online purchasing behavior. We selected the United States and Vietnam, with longer PC-commerce experience and shorter one, respectively. Data were collected for the following four groups: 1) the U.S. PC-commerce (n=256), 2) the U.S. Mobile-commerce (n=283), 3) the Vietnamese PC-commerce (n=159), and 4) the Vietnamese Mobile-commerce (n=225). As results, it was first confirmed that different e-commerce histories in developed and developing countries make the online shopping process different. Second, navigability has a huge impact on consumers' decision support satisfaction in Vietnam where PC-commerce history is shorter. Third, we identified that pre-purchase phase is more related with decision support satisfaction and that purchase phase is more related with task support satisfaction.