• 대한세포병리학회지
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• 제10권1호
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• pp.43-53
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• 1999

We retrospectively reviewed the results of 1,850 fine needle aspiration cytology(FNAC) of thyroid nodules performed from 1990 to 1991 in the Department of Pathology, Seoul National University Hospital. Among 1,528 cases and 322 cases aspirated by clinicians and a pathologist, 465 cases(30.4%) and 13 cases(4.0%) of the aspirates were inadequate, respectively. In 227 cases, correlation of the FNAC diagnosis and histologic diagnosis was done. Excluding the inadequate cases, the sensitivity nor the detection of neoplasm(malignancy together with follicular adenoma) was 86.4% and the specificity was 70.7%. The overall diagnostic accuracy was 79.0%. There were 16 false-positive cases(7.0%), and 19 false-negative cases(8.4%). The predictive value of each cytologic diagnosis was 92% in papillary carcinoma, and 100%, in Hashimoto's thyroiditis. The expectancy of malignancy was 52.8% in "suspicious malignancy" and 26.7% in "atypical lesion".

• Asian Pacific Journal of Cancer Prevention
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• 제14권2호
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• pp.1031-1035
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• 2013

Background: There have been few studies in Turkey on the incidence of childhood cancers. A mother's knowledge about signs and symptoms of cancer is important for early diagnosis, effective treatment, and improvement of life expectancy. This study was conducted with a group of mothers of children, aged 0-13, at a Family Health Center (FHC) in Turkey's Eastern Black Sea Region, to analyze their knowledge about cancer symptoms in childhood. Materials and Methods: The study group of this descriptive/cross-sectional research comprised 2,061 mothers, ages 19-49, at an FHC in the Eastern Black Sea Region in February 1, 2011 - June 1, 2011. Before the study, permission was obtained from the local ethics board and the institutions concerned. A value of p<0.05 was accepted as statistically significant. Results: Of the mothers, 34.9% were between the ages of 40-47, 40.5% had three children, 73.8% had no experience with children with cancer, 45.9% said they learned about cancer on television, 39.7% stated that the primary reason for childhood cancer was the mother's smoking during pregnancy, 68.8% said that early diagnosis would save a child, and 98% wanted to learn about childhood cancer. Conclusion: It was determined that the mothers' knowledge of cancer was deficient.

• 전기학회논문지
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• 제66권11호
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• pp.1605-1611
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• 2017

In this study, the characteristic lifetime of power facilities such as power transformers and GIS were investigated as the basis of power facility asset management. It is difficult to obtain the operation and failure data of the facilities in Korea. Therefore, the number of failures of the electric power facilities was calculated from the operation data and hazard rate shown in the overseas literatures, and the statistical analysis was performed using the Weibull distribution function. As a result of extracting and analyzing the data of the UK National Grid for power transformers, the characteristic lifetime (scale parameter) of 116.45 years was considered to be a very appropriate value for power transformer management and can be used as a comparative data of the analysis of the domestic transformers. As for the GIS, based on the Bays and Bay-Years data and the hazard rate according to the operation years of the 123kV GIS in Germany, it is found out that the characteristic lifetime of GIS is not so meaningful. It is necessary to decide a maintenance strategy and lifetime expectancy considering the characteristics of the design, materials and manufacturing process of GIS.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.421-428
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• 2020

The study investigates the causal factors affecting mobile banking services acceptance by customers in Thailand. This study employs quantitative research methodology and non-probability sampling to draw 400 mobile banking users from the population who are the mobile banking users of commercial banks in Thailand. The online questionnaires were used as a research tool to collect data with the Cronbach's alpha coefficient as 0.931. By using the structural equation model to analyze data, the results have shown that service quality, perceived usefulness, perceived ease-of-use, safety in use, and social factors influenced mobile banking services acceptance by customers in Thailand.By checking the harmony with the statistics χ² = 108.618, df. = 86, χ²/df. = 1.263, p-value = .050, CMIN/DF =1.263, GFI = .989, AGFI=.962, TLI= .962, CFI = .976, RMSEA = .037,along with testing the weight factor. In conclusion, the research model was found to be harmonious with the empirical data at the significance level 0.05. The findings of this study suggest that the commercial banks should apply this research to understand the acceptance behavior of mobile banking users, also to determining marketing strategies, identifying opportunities and creating a competitive advantage for their services in the future.

• 한국정보보호학회:학술대회논문집
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• 한국정보보호학회 1995년도 종합학술발표회논문집
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• pp.51-58
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• 1995

The importance of the risk analysis tool has been recognized and its use also has been emphasized by a number of researchers recently The methodology were examined but neither algorithms nor practical applications have been implemented or practiced in Korea. In this paper, the architecture of the Buddy System, one of the automated risk assessment tools. is analyzed in depth to provide the algorithmic understanding and to promote the development of the risk analysis methodology. The Buddy System mainly uses three main factors of vulnerability, threat and countermeasures as a nucleus of the qualatative analysis with the modified loss expectancy value. These factors are identified and assessed by the separation of duties between the end user and security analyst. The Buddy System uses five axioms as its bases of assessment algorithm and the assessed vulnerability level is strictly within these axioms. Since the In-place countermeasures reduce the vulnerability level up to a certain level. the security analyst may use "what if " model to examine the impact of additional countermeasures by proposing each to reduce the vulnerability level further to within the acceptable range. The emphasis on the qualitative approach on vulnerability leveling is very well balanced with the quantitative analysis that the system performance is prominent.prominent.

• Nuclear Medicine and Molecular Imaging
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• 제41권2호
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• pp.102-111
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• 2007

Dementia is a major burden for many countries including South Korea, where life expectancy is continuously growing and the proportion of aged people is rapidly growing. Neurodegenerative disorders, such as, Alzheimer disease, dementia with Lewy bodies, frontotemporal dementia, Parkinson disease, progressive supranuclear palsy, corticobasal degeneration, Huntington disease, can cause dementia, and cerebrovascular disease also can cause dementia. Depression or hypothyroidism also can cause cognitive deficits, but they are reversible by management of underlying cause unlike the forementioned dementias. Therefore these are called pseudodementia. We are entering an era of dementia care that will be based upon the identification of potentially modifiable risk factors and early disease markers, and the application of new drugs postpone progression of dementias or target specific proteins that cause dementia. Efficient pharmacologic treatment of dementia needs not only to distinguish underlying causes of dementia but also to be installed as soon as possible. Therefore, differential diagnosis and early diagnosis of dementia are utmost importance. F-18 FDG PET is useful for clarifying dementing diseases and is also useful for early detection of the diseases. Purpose of this article is to review the current value of FDG PET for dementing diseases including differential diagnosis of dementia and prediction of evolving dementia.

• The Journal of Asian Finance, Economics and Business
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• 제9권6호
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• pp.11-21
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• 2022

The perspectives on aging women's financial security during their retirement years are based on their behavior, planning, and decision-making processes during their working years. Elderly women are considered vulnerable and have a longer life expectancy, lower-income, and limited financial understanding compared to males; therefore, drastic steps need to be taken to improve their financial stability and quality of life. The current study sought to determine the most important contributors to retired women's financial health by measuring the value of four factors/variables: capability, opportunity, willingness, and biopsychosocial. This study used a mixed model approach, with qualitative analysis in the first phase involving a focus group discussion session, a pilot analysis, and quantitative analysis for phase two involving the distribution and collection of questionnaires completed by retired women. The surveys were distributed across Malaysia in five distinct zones and yielded 339 usable replies to support the theory. The outcomes of the Multiple Regression Analysis in Malaysia revealed that capability, opportunity, and biopsychosocial factors are significant predictors of retired women's financial security, whereas the willingness indicator lacked statistical significance.

• Journal of Korea Trade
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• 제23권7호
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• pp.1-12
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• 2019

Purpose - This paper empirically investigates the relationship between Information and Communication Technology (ICT) goods imports and economic growth with a focus on the 13 Asia-Pacific economies during 2005-2016. In particular, this paper extends the study by breaking down the data of Asia-Pacific countries into High Income Countries (HICs) and Low Income Countries (LICs) according to the difference of income levels. Design/methodology - Our empirical model employs the standard growth model based on the Barro (1998)-type growth framework. Using static panel-data technique, we estimate the effect of ICT goods imports on economic growth in the 13 Asia-Pacific economies. In addition, we also estimate a difference of the ICT goods imports-economic growth link between HICs and LICs. Findings -The estimation results indicate that ICT goods import has a significant positive effect on economic growth, while ICT goods export has a positive but statistically insignificant effect on it. When we break down the panel data into HICs and LICs in order to gain further insight, ICT goods imports has been effective in spurring growth in only LICs but not in HICs. The other supplementary results show that both domestic investment (GCF) and life expectancy (LE) have a significantly positive impact on economic growth in both HICs and LICs. Originality/value - The main findings of the paper suggest that ICT goods imports has a positive effect on economic growth in only LICs but not in HICs. This result supports the so-called 'leapfrogging' hypothesis through ICT goods imports in the Asia-Pacific countries, in which LICs are gaining more from ICT goods imports than HICs.

• 경영정보학연구
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• 제25권1호
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• pp.165-187
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• 2023

기대수명의 지속적인 증가와 건강에 대한 높은 관심은 인터넷과 스마트폰의 대중화로 일반인들의 건강정보에 대한 이용에 큰 변화를 가져왔다. 모바일 헬스 환경으로 의료시장이 확대되면서 많은 건강관련 앱이 만들어져 유통되고 있지만, 각종 규제로 서비스 제공이 어려워지면서 그 수용속도가 더딘 상황이다. 이에, 본 연구는 프라이버시 계산모형을 바탕으로 개인건강기록 앱 수용저항에 영향을 미치는 요인으로 지각된 가치와 지각된 위험요인(심리적 위험, 시간손실 위험, 제도적 위험) 및 지각된 혜택요인(유용성, 상호작용성, 자율성)을 도출하고 이들 간의 영향 관계를 검증하였다. 또한, 제조사에 대한 신뢰의 조절효과를 분석하여 지각된 위험과 지각된 혜택이 지각된 가치에 미치는 영향이 어떻게 달라지는지를 추가적으로 살펴보았다. 개인건강기록 앱을 인지하면서도 사용하지 않는 국내 대학생을 대상으로 설문조사를 진행한 후, 구조방정식모형을 활용하여 분석을 진행하였다. 가설검증 결과, 지각된 가치는 수용저항에 부(-)의 영향을, 지각된 위험(시간손실 위험)은 지각된 가치에 부(-)의 영향을 미치고, 지각된 혜택(유용성, 상호작용성, 자율성)은 지각된 가치에 정(+)의 영향을 미치는 것으로 확인되었다. 또한, 제조사에 대한 신뢰는 지각된 위험(제도적 위험)이 지각된 가치에 미치는 영향력을 약화시켰다. 본 연구결과는 개인건강기록 앱의 수용저항을 줄이기 위한 세부기준을 확인하고 제안함으로써, 개인건강기록 앱 시장 환경에서 경쟁우위를 확보하기 위한 지침 마련에 기여할 수 있을 것으로 기대한다.

• 한국산학기술학회논문지
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• 제18권7호
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• pp.382-393
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• 2017

스마트TV는 운영체제를 탑재하고 인터넷 기능과 결합된 TV로서 다양한 앱과 콘텐츠의 이용이 가능하며 개인화, 양방향적인 서비스를 제공할 수 있다. 그러나 이와 같은 스마트TV의 인터넷 연결성은 여러 보안 취약점들이 존재하며 이로 인해 큰 개인적 및 사회적 피해가 야기될 수 있다. 이에 현재보다 더욱 보안이 강화된 스마트TV 개발이 요구되는 시점이며 이에 따라 본 연구에서는 UTAUT2 모델을 적용하여 보안이 강화된 스마트TV에 대한 소비자의 구매의도를 분석하고자 한다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, UTAUT2 모델에서 주요변수인 성과기대, 사회적 영향, 촉진조건 및 가격가치가 소비자의 구매의도에 유의미한 영향을 주는 것을 발견하였다. 둘째, 노력기대는 구매의도에 유의미한 영향을 주지 않았다. 셋째, 소비자의 구매의도에 영향을 미치는 요인 중 사회적 영향에서만 성별 조절효과가 발견되었다. 연구 결과를 토대로 볼때 소비자들은 보안성이 강화된 스마트TV 구매에 영향을 미치는 요인으로 사회적 영향이 가장 높은 영향력을 보이고 있다. 따라서 구매의도 향상을 위해서는 무엇보다 스마트 TV 보안성 강화에 대한 필요성과 중요성에 대한 홍보 활동의 확대가 요구되고 있으며, 사용상의 편리함을 인식할 수 있을 정도의 기술적 보완이 요구되고 있다.