• 기술경영경제학회:학술대회논문집
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• 기술경영경제학회 2003년도 제22회 동계학술발표회 논문집
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• pp.63-77
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• 2003

In this paper, we investigate the co-movements of the real GDP cycle and the telecommunications service expenditure cycle over 1980 through 2000 in Korea. We used several appropriate statistical tools to characterize and to compare the co-movements between the two aforementioned variables. The statistics presented in this paper are common, easy to Interpret and capture important visual, descriptive information and the dynamics of data that would be lost if one focused only on the unconditional correlation coefficients of de-trended data. This paper examines four possible characteristics for the co-movements of real GDP and telecommunications service expenditure in Korea. The first is that in low frequency, the cyclical movements in telecommunications service expenditure are very similar to the cyclical movements in real GDP, The second is that in the high frequency, the estimated stationary cyclical telecommunications service expenditure is not closely related to the estimated stationary cyclical real GDP. Third, according to co-spectra analysis, the strong relationships between the variables are found in the mid-term frequency and as such this empirical finding has important implications for telecommunications policy and telecommunications service implementation strategies. Finally, in the short-term period, our empirical results support telecommunications network theories such as path dependence properties, lock-in, positive feedback externality, and network externality.

• 한국산업정보학회논문지
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• 제21권5호
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• pp.31-40
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• 2016

본 논문은 의료 및 보건서비스 산업의 특성을 나타내는 새로운 변수인 산업의 마크업, 자본집약도와 수입중간재비중을 포함하는 자기회귀시차모형을 설정하고, 의료 및 보건서비스 산업에 있어서 서비스수출의 각 결정요소탄력도를 추정함으로서 서비스 수출성과를 결정하는 요인을 실증적으로 분석하였다. 또한 본 논문은 의료보건서비스 산업의 특성을 밝히고 서비스수출의 결정요소를 실증적으로 분석함으로서 새로운 방법론을 제시하고 있다. 실증분석결과는 산업구조의 대리변수인 의료 및 보건산업의 마크업, 환율 그리고 이자율의 세 변수가 의료 및 보건서비스 산업에 있어서 서비스수출에 영향을 주는 주요변수임을 밝히고 있다.

• 한국IT서비스학회지
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• 제8권2호
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• pp.229-245
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• 2009

The Korean mobile telecommunication service market is faced with a tremendous competitive period, in which the market is entering into the maturity stage with launching of the 3rd generation service and with introduction of mobile number portability. In general, it is more important to sustain the old customers than to attracting new customers, as the life cycle of an industry is entering the maturity stage in which the growth rate of new customers is decreasing gradually or becoming stagnant. Thus, mobile telecommunication business has to seek a way to maintain the existing customers instead of promoting new customers. So this study investigates whether the service quality of mobile telecommunication could have effects on the switching barrier of the industry. In order to test the hypothesis on the effects of service quality of mobile telecommunication in Korea on switching barrier, this study collected the questionnaire response data of students including middle and high school students and undergraduates, who are regarded as the major customers in that mobile telecommunication industry.

• Asian Pacific Journal of Cancer Prevention
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• 제16권9호
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• pp.4089-4094
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• 2015

The purpose of the research was to determine the effect of home care service on the quality of life in patients with gynecological cancer. This randomized case control study was carried out in a womans hospital between September 2011 and February 2012. Women undergoing gynecological cancer treatment were separated into intervention and control groups, of 35 patients each. The intervention group was provided with nursing care service through hospital and home visits ($1^{st}$, $12^{th}$ weeks) within the framework of a specifically developed nursing care plan. The control group was monitored without any intervention through the hospital routine protocols ($1^{st}$, $12^{th}$ weeks). Data were collected using An Interview Form, Home Visit Monitoring Form and Quality of Life Scale/Cancer Survivors. Effects of home care service on the quality of life in gynecological cancer patients were investigated using chi-square tests, McNemar's test, independent t-test and ANOVA. This study found that the intervention group receiving home care service had a moderately high quality of life (average mean: $6.01{\pm}0.64$), while the control group had comparatively lower quality (average mean: $4.35{\pm}0.79$) within the 12 week post-discharge period (p<0.05). This study found home care services to be efficient in improving the quality of life in patients with gynecological cancer.

• 한국치위생학회지
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• 제12권4호
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• pp.665-674
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• 2012

Objectives : This study purposed to identify factors related to dental service quality perceived by dental clinic patients, and for this purpose. Methods : The data conducted a questionnaire survey of 362 patients who had visited a dental clinic in Daejeon twice or more in August 2010 and aged over 20 during the period from the 1st to 31st of August 2010 and obtained results as follows. Results : The patients' general characteristics, perceived dental service quality was higher in older ones, married ones, high school or lower school graduates, civil servants, self-employed ones, and housewives, and the differences were statistically significant. according to the patients' dental clinic use characteristics, perceived dental service quality was higher when the stay in dental clinic was short, and the difference was statistically significant. Conclusions : Perceived dental service quality was related to the patients' general characteristics and dental clinic use characteristics. therefore, dentists and dental hygienists should make efforts to be more patient-oriented and to create pleasant dental care environment.

• 한국환경복원기술학회지
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• 제17권3호
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• pp.65-74
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• 2014

The aim of this study was to evaluate the monitoring efficiency of camera trapping in wild animals and to determine ways to increase its utilization. Nineteen sensor cameras were installed in Sobaeksan National Park from October 2012 to September 2013. During the study period, a total of 1045 terrestrial mammal photos were secured and 15 species habitats were identified. Shooting frequency was higher for medium and large mammals, especially full images of carnivores accounted for approximately 83%. A comparison of track surveys revealed that camera trapping was highly efficient and helped in capturing real image of species. The supply of lure and bait stimulates the sense of smell in carnivores, which further enhances the capturing of images by camera trapping. The results of this study provide data on the ecological characteristics of mammals, which can aid in determining habitat use by these animals, and thereby facilitate prevention of crop damage by wildlife.

• 한국초등과학교육학회지:초등과학교육
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• 제29권2호
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• pp.144-154
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• 2010

This study was conducted among elementary pre-service teachers who participated in creative story writing exercises related to science. It aimed at analyzing their perceptions, based on their own experiences in the story writing exercises, about story writing as a pedagogic method, to discover the implications on science education. First, creative story writing exercises were carried out over a period of eight weeks by 114 elementary pre-service teachers at a college of education, all of whom were non-science majors taking a course on earth science as a liberal arts elective. Afterward, an open-ended survey was conducted among them to discover their attitudes and opinions, both as students and as teachers-to-be. The majority of the subjects expressed a positive opinion about creative story writing as a pedagogic tool, stating that they would apply it in their future teaching by telling stories they wrote or having students write their own compositions. Pre-service teachers conclude a creative writing improves students' studying, leads interest and motivation. In addition, it linked with daily life and other school subjects. Creative story writing, when used at colleges of education, has didactic value as an empirical exercise for pre-service teachers who are not majoring in science.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 추계종합학술대회
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• pp.749-753
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• 2002

뉴밀레니엄 시대를 맞이하여 이동통신기술은 급격한 진보를 거듭하고 있다. 이와 같은 기술 환경변화로 인해 최근, 접속시장에서는 CDMA 2000-lx 서비스를 기존의 이동전화 서비스와 회계분리하자는 의견이 대두하고 있다. 특히 유선망 사업자와 이동망 사업자는 회계분리에 대하여 매우 상반된 주장을 전개하고 있다. 그러나, CDMA 2000-lx 서비스 회계분리 문제는 그 중요성에도 불구하고 아직까지 심도있는 연구가 이루어지지 않고 있다. 본 논문에서는 CDMA 2000-lx 서비스의 회계분리 문제에 패한 사업자들의 논거를 고찰하고 주로 기술적인 측면에서 그 논거의 타당성을 분석하였다. 분석결과 CDMA 2000-lx는 국제표준의 관점에서 3세대에 속하며 사용 주파수 대역을 중심으로한 역무구분 방법도 문제점이 있으므로 기존 제도에 대한 보완이 필요하다고 사료된다.

• 한국컴퓨터정보학회논문지
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• 제10권4호
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• pp.149-154
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• 2005

웹 서비스를 포함한 다양한 서비스를 제공하는 대학, 회사의 전산소는 비용 관계상 결함포용(Fault-Tolerant) 시스템이 아닌 단일 서버, 단일 네트워크 장비로 구성되어 있다. 이렇듯 이중화로 구성되어 있지 않은 시스템의 경우 웜 바이러스 등과 같은 다양한 이유로 장애가 발생할 수 있으므로 이러한 장애를 능동적으로 감지할 수 있는 기술이 필요하다. 본 논문은 다양한 서비스에 대해 장애가 발생한 시스템을 감시하는 시스템을 설계하고 구현하며 관리자의 편의성을 위해 웹 기반 시스템으로 구현하는 기술을 소개한다. 이러한 시스템을 사용하여 시스템 관리자는 사용자의 장애 신고에 의지하지 않고 장애가 발생한 서비스를 이메일, SMS 등을 통해 보고 받아 즉각적인 장애 조치를 취할 수 있다.

• 대한임상독성학회지
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• 제15권2호
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• pp.101-106
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• 2017

Purpose: This study examined the patterns of drugs, poisons, and chemicals detected in autopsy samples performed in the Seoul Institute and other regional forensic offices of the National Forensic Service (NFS) between 2014 and 2016. Methods: The investigation carried out using the laboratory information management system. Forensic toxicological identification and quantitation were performed in autopsy samples, including heart blood, peripheral blood, liver, kidney, vitreous humor and etc. Gas chromatography/mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) were used to analyze the drugs and poisons. Results: Forensic autopsies were performed on 9,674 cases in this period. Based on the autopsy reports, 699 cases (7.2%) were considered as unnatural deaths caused by fatal intoxication. The number of male deaths was higher than that of female deaths, with the age of 50-59 being the most common age group. Conclusion: Drugs comprised the largest number of deaths due to poison, followed by alcohol, agrochemicals, drug with alcohol, carbon monoxide, and cyanide, in that order. Zolpidem was the most frequently used drug in all drug-related intoxication cases.