• 디지털융복합연구
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• 제15권2호
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• pp.285-294
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• 2017

이 연구에서는 기혼자의 연애를 소재로 하는 최근 드라마에 대한 빅데이터 분석을 수행하여 현대인의 연애관의 변화에 대해 살펴보았다. 정 반대의 서사적 지향을 지닌 드라마 두 편을 선정하여 각각 드라마 종영 후부터 1개월 기간에 대한 시청자들의 공감도를 텍스트 마이닝과 감성 분석 기법을 사용하여 분석하였는데, 그 결과 현대 한국 사회에서 기혼자의 연애에 대한 생각이 변화하고 있다는 결론을 얻었다. 특히 가정의 의미 변화가 확인되는데, 가정은 '남편과 아내라는 사회적 역할을 수행하는 곳'이 아니라, '진정한 교감과 위안을 나눌 수 있고 개인이 행복해야 하는 곳'으로 그 의미가 변화했다고 볼 수 있다. 개인이 행복하지 않다면, 가정을 깨뜨리는 일도 필요하다는 결론이 가능한 것이다. 이런 맥락에서 현대의 이혼율과 이에 대한 문제도 고구되어야 할 것으로 보인다. 그러나 구글 트렌드 검색을 통하여 살핀 결과, 현대 한국 사회에서는 여전히 연애보다 결혼에 대한 관심도가 훨씬 높음을 알 수 있었다. 현대 한국사회에서 아직까지는 '연애를 위한 연애' 곧 '결혼을 목표로 하지 않은 연애'를 선호하고 있지 않음을 뜻한다. 결혼에 비해 연애에 대해 관심이 적은 것이라기보다, 진정한 사랑을 전제로 결혼이 이루어져야한다는 인식이 반영된 결과로 해석할 수 있다. 이와 같은 연구는 소셜미디어를 통한 트렌드 변화 연구에 활용될 수 있을 것으로 기대된다.

• 한국항만경제학회지
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• 제34권2호
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• pp.97-114
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• 2018

우리나라 수출입의 중요한 비중을 차지하는 동아시아 지역은 지리적, 정치적, 경제적, 사회 문화적 상호보완성으로 인해 더욱 증대될 것으로 예상된다. 최근 수출입 증대와 더불어 우리나라 항만과 대동아시아 국가간의 항만 물동량 역시 증가세를 유지하고 있다. 그러나 이들 국가의 경제 규모 및 성장율의 차이, 항만인프라 수준, 지리적 위치 등과 같은 다양한 요인으로 인해 이들 항만과의 물동량은 변동성을 보이고 있다. 항만 물동량의 변동성과 항만 네트워크의 변화에 대한 많은 연구에도 불구하고 우리나라 항만과 동아시아 항만과의 보다 세밀한 연구는 제한적이기 때문에 본 연구가 이러한 갭을 보충하고자 한다. 본 연구는 우리나라의 대동아시아 지역항만간 수출 컨테이너 화물의 유통경로의 추이를 분석하고, 이를 통해 우리나라 무역업체, 선사, 물류업체, 항만당국의 정책적 실무적 시사점을 제시하는데 목적이 있다. 2007~2015년간 우리나라의 주요항만과 대동아시아 개별항만간의 물동량의 변동성을 변이할당기법을 사용하여 분석을 진행한다. 분석결과 우리나라 항만 전체적으로 Shanghai, Ningbo, Ho Chi Minh, Haiphong 등이 규모와 물동량 증가면에서 가장 중요한 항으로 나타났다. 항만단위로 볼 때 부산항에서는 중국항의 경우 Yantai, Weihai, Hakata, Kobe, Ho Chi Minh, Haiphong, 인천항은 Lianyungang, Tianjin, Osaka, Kobe, Ho Chi Minh, Haiphong, 광양항은 Tianjinxingang, Weihai, Yokohama, Ho Chi Mihn, Tanjong, 울산항은 Yantai, Lianyungang, Nagoya, Kobe, Ho Chi Minh, Portkelang항과의 항만네트워크가 중요한 것으로 나타났다. 따라서 우리나라의 정부, 항만당국, 해운 물류업체들은 이들 항만과의 물류네트워크 협력을 강화하는 한편 이들 항만에 대한 투자를 적극적으로 추진해 나갈 필요가 있다.

• Journal of Preventive Medicine and Public Health
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• 제9권1호
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• pp.95-108
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• 1976

It is obvious that adequate nutrition is essential for growth and development of school children, and many elementary schools in this country have already practiced it. Therefore, it would seem apparent that the school feeding program would have a significant effect on the growth and development of school children. This paper presents a two-year experimental school-feeding program from 1973 to 1974, and attempts to evaluate its effects by before-and-after nutrition surveys conducted in two elementary schools, one experimental and the other as a control. The two schools are both located in the same county (Yongin-Kun, Kyunggi-Do), and the families of their students are presumed to share the same socio-economic level. To assess the effect of school-feeding, we measured height, weight, chest circumference and grasping power. Physical examination was done foresigns of nutritional deficiency. A stool examination for parasites and blood examinations for hemoglobin, hematocrit and serum protein were included. Analyses were done for 150 students selected randomly at the beginning of the program. These students attended the school throughout the program period. Results are as follows: 1. The amount of increase of height, weight, chest cirumference and grasping power were greater in the experimental school than in the control school, but the differences are not statistically significant. 2. Signs of vitamin deficiency decreased in both experimental and control schools during the two-year program period. 3. At the time of the 1974 post-survey, values of Hb. & Hct. revealed no significant differences between the two schools, but serum protein level was a little higher than that of general Korean rural children of the same age. 4. Infestation rate of parasites had increased in both schools during the two-year program period. 5. Each student of the two schools was classified into three major classes, according to the level of economic condition of his or her parents, namely higher, middle and lower. The results of each class of the experimental school was compared with that of the corresponding class of the control school, expecting the relative magnitude of change largest in the lower economic class of the experimental school. However, change was greatest in the middle class, still not being statistically significant. Finally, the authors concluded that the two-year period for such a program is not sufficiently long for its beneficial effects to be demonstrated and measured. As long as the growth and development of children are concerned, planning with a more distant perspective is required, as well as the development of new methods of evaluation.

• 한국정보과학회논문지:시스템및이론
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• 제30권10호
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• pp.523-532
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• 2003

VOD 서비스는 멀티미디어의 특성인 높은 대역폭과 긴 재생시간으로 인해 비디오 서버의 네트워크 자원 소비가 많다. 비디오 서버의 네트워크 입출력 대역폭을 절약하기 위해 패칭이 제안되었다. 패칭은 True VOD를 실현하기 위해 멀티캐스트를 사용하여 비디오 스트림을 공유하고, 사용자에게 서비스지연 없이 즉시 VOD 서비스를 제공한다. 패칭에서 통신 채널은 정규 채널로서 하나의 비디오 전체를 멀티캐스트하기 위해 또는 패칭 채널로서 비디오의 앞부분만을 멀티캐스트하기 위해 사용된다. 본 논문에서는 패칭에서 사용되는 정규 채널의 사용 시간을 단축시키기 위해 부정규 채널과 정규 채널로 구분하는 버퍼링 패칭 기법을 제안한다. 제안하는 기법에서 부정규 채널은 정규 채널과 달리 비디오의 전체 데이타중에서 버퍼링 윈도우에 해당하는 비디오의 끝 부분을 전송하지 않으며, 이 비디오의 끝 부분은 최근의 정규 채널로부터 다운로드 되어 사용자 버퍼에 저장된다. 제안하는 기법의 성능을 패칭과 비교하기 위해 시뮬레이션을 수행하였으며 시뮬레이션 결과 제안한 기법이 사용자 스테이션에서 버퍼링 되는 비디오 데이터의 양은 패칭보다 많지만, 이탈율, 평균 서비스 지연시간, 공평성에 있어서 패칭보다 우수함을 보여주었다.

• 한국문헌정보학회지
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• 제8권
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• pp.183-207
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• 1981

Library standards have been the source of considerable controversy, whereas many problems are involved in developing stardard for university library collections. For evaluation purposes, standards should be precise, quantifiable and measurable. In the United States, however, standards for academic libraries are limited to qualitative statements and principles. Quantitative standards, when given, are ususally related to the number of population in the institution being served, or the prescribed quantitative objectives are often arbitrarily formulated by value judgements. The study in this paper attempts to explain the problems involved in developing quantitative standard for academic library collections. Two problems facing in the formulation of the optimal size of collection are identified. One is the theoretically faulty concept of adequacy of collection to meet the situations of diversity of university libraies, and the other is the difficulties in quantification and measurement, along with the lack of concept of adequacy of collection. However, quantification of adequate size of collection is proved to be useful on the pratical level, even though not valid theoretically. ACRL, Clapp/Jordan and Voigt developed formulas or models for setting the optimal size of a library collection for any particular university library. The main purpose of this study is the analysis of the above formulas. ACRL standard was drawn from obervation and analysis of statistcs in leading library collections. In academic field, this judgement appears to have been based on the assumption that a high-grade institution would be apt to have a good library collection. This study criticizes ACRL standard for its failure to include some determinants of measurements, and points out the limitations of the standard. In contrast. Clapp/Jordan developed a formula rather scientifically based upon bibliographical sources. This is similarly empirical but has the advantage of bringing into play the elements which make universities diverse in nature. Both ACRL and Clapp/Jordan formulas share two major defects. (1) the specific subject needs of the collection are not indiacted directly, and (2) percentage rate of growth is an indicator in measuring the potential utility of a collection. Thus both formulas failed to provide a basis for meaningful evaluation. Voigt further developed a model for determining acquisition rates for currently published materials based on bibliographic technique. Voigt model encourages experimentation with different programs and different allocations of input resources, designed to meet the needs of the library's particular population. Standard for university library collections can be formulated in terms of input(traditional indicator), or additionally, in terms of output(cost-effectiveness). Cost effectiveness is expressed as user satisfaction, ability to provide wanted materials within a reasonable time period. Thus simple quantitative method does not cover all the situations of diversity of university library collections, nor measures the effectiveness of collections. Valid standard could not be established without further research.

• Journal of Korean Neurosurgical Society
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• 제60권5호
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• pp.511-517
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• 2017

Objective : Spontaneous intracerebral hemorrhage (ICH) and ischemic stroke share common vascular risk factors such as aging and hypertension. Previous studies suggested that the rate of recurrent ICH and ischemic stroke might be similar after ICH. Presence of cerebral arterial stenosis is a potential risk factor for future ischemic stroke. This study investigated the prevalence and factors associated with cerebral arterial stenosis in Korean patients with spontaneous ICH. Methods : A total of 167 patients with spontaneous ICH were enrolled. Intracranial arterial stenosis (ICAS) and extracranial arterial stenosis (ECAS) were assessed by computed tomography angiography. Presence of ICAS was defined if patients had arterial stenosis in at least one intracranial artery. ECAS was assessed in the extracranial carotid artery. More than 50% luminal stenosis was defined as presence of stenosis. Prevalence and factors associated with presence of ICAS and cerebral arterial stenosis (presence of ICAS and/or ECAS) were investigated by multivariable logistic regression analysis. Results : Thirty-two (19.2%) patients had ICAS, 7.2% had ECAS, and 39 (23.4%) patients had any cerebral arterial stenosis. Frequency of ICAS and ECAS did not differ among ganglionic ICH, lobar ICH, and brainstem ICH. Age was higher in patients with ICAS ($67.6{\pm}11.8$ vs. $58.9{\pm}13.6years$ p=0.004) and cerebral arterial stenosis ($67.9{\pm}11.6$ vs. $59.3{\pm}13.5years$, p<0.001) compared to those without stenosis. Patients with ICAS were older, more frequently had diabetes, had a higher serum glucose level, and had a lower hemoglobin level than those without ICAS. Patients with cerebral arterial stenosis were older, had diabetes and lower hemoglobin level, which was consistent with findings in patients with ICAS. However, patients with cerebral arterial stenosis showed higher prevalence of hypertension and decreased kidney function compared to those without cerebral arterial stenosis. Multivariable logistic regression analyses showed that aging and presence of diabetes independently predicted the presence of ICAS, and aging, diabetes, and hypertension were independently associated with presence of cerebral arterial stenosis. Conclusion : 19.2% of patients with spontaneous ICH had ICAS, but the prevalence of ECAS was relatively lower (7.2%) compared with ICAS. Aging and diabetes were independent factors for the presence of ICAS, whereas aging, hypertension, and diabetes were factors for the cerebral arterial stenosis.

• 한국비블리아학회지
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• 제22권3호
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• pp.373-391
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• 2011

본 연구는 KCI 등재지 1,438종을 대상으로 오픈액세스 학술지를 식별해내고, 이들 학술지의 원문공개 채널, 분야별 차이, 발행기관별 차이를 파악하고자 하였다. 조사 결과, 등재지의 21%는 상용DB를 통한 서비스를 하지 않는 오픈액세스 학술지였으며, 34%는 무료공개와 상용DB를 통한 원문서비스를 동시에 하고 있었으며, 나머지 34%는 오직 상용DB에서만 원문서비스하고 있음을 알 수 있었다. 또한 오픈액세스 학술지의 48%는 무료원문 DB를 통하여, 52%는 발행기관 홈페이지를 통하여 원문을 공개하고 있었다. 원문공개 채널은 분야별로 차이가 있었다. 즉, 인문, 사회과학 분야 학술지는 주로 발행기관 홈페이지, 과학기술 및 의학 분야 학술지는 주로 무료DB에 원문을 공개하고 있었다. 전체 오픈액세스 학술지 중 약 30%는 의학 분야 학술지였으며, 사회과학 분야 학술지도 25%를 차지하였다. 그러나 분야별 분포로 볼 때 사회과학과 인문학 분야 학술지의 오픈액세스 비율은 약 15%정도에 불과하였다. 이에 비해 의학 분야의 경우 약 60%가 오픈액세스 학술지였으며, 자연과학과 공학 분야도 각각 33%, 24%가 오픈액세스 학술지였다.

• 디지털융복합연구
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• 제17권11호
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• pp.1-7
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• 2019

본 연구는 1995년부터 2017년까지의 16개 지방자치단체 지역별 패널통계를 활용하여 노동력 고령화가 노동 생산성에 미치는 영향을 분석하였다. 지역별 고정효과와 다양한 조정변수들을 고려한 패널회귀분석 결과에서 총취업자 중 60세 이상의 취업자 비중으로 정의한 노동력 고령화는 노동 생산성에 매우 일관되고 유의한 음(-)의 효과를 주며, 부정적인 효과의 크기는 노동력 고령화가 1% 증가할 때마다 노동 생산성이 약 0.14 ~ 0.20% 감소하는 것으로 나타났다. 이밖에 조정변수로 고려된 1인당 자본스톡과 인적자본은 노동 생산성이 증가하는데 많은 기여를 하고, 경기변동의 대리변수인 실업률은 예상과 같이 노동 생산성에 유의한 음(-)의 효과를 미치며, 비록 유의하지는 않지만, 전체 산업 중 서비스업의 비중을 의미하는 산업구조의 계수가 양(+)의 값을 보이지만 유의하지 않은 것으로 확인되었다. 본 연구의 결과를 통해 노동력 고령화로 예상되는 노동 생산성의 감소를 억제하기 위해 인적자본을 유지 및 확충할 수 있는 경제 및 교육정책의 설계와 구축이 필요하다는 시사점을 도출할 수 있다.

• Clinical and Experimental Reproductive Medicine
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• 제24권2호
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• pp.233-239
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• 1997

Embryos of most mammalian species grown in vitro would undergo developmental arrest at the approximate time of genomic activation. Stage-specific cell block and the resulting rapid loss of embryo viability in conventional culture media have limited the duration for which embryos may be cultured prior to transfer. As a result, embryos are usually transferred to the uterus at the 4-to 8-cell stage to avoid the loss of viability associated with long-term in vitro culture. Early transfer has led to asynchrony of the endometrium-trophectoderm interaction at the time of implantation and a resultant reduction in the rate of implantation. To overcome these problems, a variety of co-culture systems has been devised in which embryos can develop for a longer period prior to embryo transfer. Vero cells, derived from African green monkey kidney, share a common embryologic origin with cells from the genital tract. In addition, they are potentially safe to use, since they are highly controlled for viruses and other contaminants. Therefore, co-culture using Vero cells has been widely utilized to enhance embryo viability and development, although not without controversies. We thus designed a series of experiments to demonstrate whether Vero cells do indeed enhance mouse embryo development as well as to compare the efficacy of co-culturing mouse 1-cell embryos on Vero cell monolayer in both Ham's F-10 and human tubal fluid (HTF) culture media. 1-cell stage ICR mouse embryos were cultured either in the presence of Vero cells (Group A) or in conventional culture medium alone (Group B). In Ham's F-10 significantly more 3-to-8cell embryos developed in group A than group B (59.8 versus 10.0%; p<0.01). In contrast, there was no significant difference in embryonic development both group A and group B in HTF. However, significant differences were noted only in later embryonic stage (13 and 0%; p<0.05 of group A and B respectively, hatching or hatched). In Ham's F-10, we also could observe the beneficial effect of Vero cell on hatching process (70.7 and 42.1%; p<0.05 of group A and group B respectively).

• 한국전통의학지
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• 제15권1호
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• pp.128-144
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• 2006

This Study aims at looking into the use of oriental medical services in treating hypertension. The first objective to be explored through this study is the morbidity caused by the disease, classifying them by age, gender, and occupation. The second is to determine the regular use of anti-hypertensive medicine and their efficacy in controlling blood-pressure. The third is to investigate the use-rate and satisfaction of oriental medical service. 838 households across the country, were asked to answer questionnaires for the period of time from Apr. to Jun. 2005. The conclusion from the survey can be summarized as following. The age of which the first medical diagnosis of hypertension were made showed lower in males, those with higher education and income. The study showed females were more active in blood-pressure control, with their frequent monitoring of blood-pressure for the past year. With age, people in under 50 age group proved to be less active. The management of high blood pressure was more effective in group with regular dosage compared to group with irregular use of anti-hypertensive medication, but their difference was minimal. Also, group with no medication showed signs of blood-pressure control. The use of oriental medical service for the past year, were more frequent in groups with lower education, either low or high income, old age, females and occupations in agriculture, forestry and fishing industry. Results were similar in both general population and high blood-pressure patient group. Females, people over 51 years old and with lower education showed more intentions in utilizing oriental medical services in the future. Results were similar in both general population and high blood-pressure patient group. It is necessary to offer a more accurate information on oriental medical treatments. Also, a systematic reform to reduce the patient's share of the treatment cost, as well as, heightening public awareness on the infirmity of present blood-pressure management system is crucial.