• 보건행정학회지
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• 제19권4호
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• pp.18-32
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• 2009

The goal of this study was to predict the health outcomes of lung cancer surgery based on the Charlson comorbidity index (CCI). An attempt was likewise made to assess the prognostic value of such data for predicting mortality, survival rate, and length of hospital stay. A medical-record review of 389 patients with non-small-cell lung cancer was performed. To evaluate the agreement, the kappa coefficient was tested. Logistic-regression analysis was also conducted within two years after the surgery to determine the association of CCI with death. Survival and multiple-regression analyses were used to evaluate the relationship between CCI and the hospital care outcomes within two-year survival after lung cancer surgery and the length of hospital stay. The results of the study showed that CCI is a valid prognostic indicator of two-year mortality and length of hospital stay, and that it shows the health outcomes, such as death, survival rate, and length of hospital stay, after the surgery, thus enabling the development and application of the methodology using a systematic and objective scale for the results.

• 한국지리정보학회지
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• 제1권1호
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• pp.99-108
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• 1998

국지 기상 모형의 지표 특성을 표현하기 위해 토양 구분, 식생 구분, 지표 거칠기 길이, 지표 알베도와 엽면지수가 지면 과정 모수화 내에서 처방되어야 한다. 이 연구에서는 인공위성 관측값으로부터 계절함수로 얻어진 경,위도 1도 및 1도의 엽면지수, 지표거칠기 길이, 눈이 없을 때의 지표 알베도와 상세 격자 NDVI를 지면 과정 모형에 적용하였다. 생물권과 대기권 사이, 지면과 대기 사이의 상호작용에서 이러한 인공위성 자료를 사용한 것과 사용하지 않은 것을 비교함으로써, 열, 에너지 및 수증기 속들, 지면 기온, 바람, 식생 물함유량, 비습, 강수장의 민감도가 조사되었다.

• 환경영향평가
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• 제20권3호
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• pp.367-379
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• 2011

This study was conducted to develop an ecological park planning model to enhance the functions of habitats and ecological corridors in Green Belt Areas, because changing policies have resulted in the degredation of the Green Belts due to progressive fragmentation of ecosystems. The principal outcome of the study is to plan an ecological park model through the restoration of habitats. In order to evaluate the capacity of the model to enhance the ecological functions of habitats and ecological corridors in Green Belt Areas, a simulation of habitats was carried out in the Sungnam-Yusoo region. The model was developed via following steps: 1. Selection of candidate sites and selection of the study site by analyzing development factors; 2. Selection of target species that can represent the habitat at the site; 3. Analysis of the site's suitability index for the target species; 4. Establishment of a conceptual plan to enhance and expand the currently produced suitability index; 5. Creation of a master plan based on the conceptual plan; and 6. Evaluation of the enhanced and expanded suitability index of the site. The study showed that the Habitat Unit (HU) of Rana coreana, which was selected as the target species of the study, increased from $28,044m^2$(3.6%) to $224,352m^2$(28.8%), and the HU of the site as the ecological corridor for wild animals increased from $4,674m^2$(0.6%) to $152,684m^2$(19.6%). The study results show that the ecological deficits of the Green Belt Area can be overcome by enhancing the ecological functions of the region, which should be beneficial. The model could be utilized for effective enhancement and management of other Green Belt Areas.

• Restorative Dentistry and Endodontics
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• 제39권4호
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• pp.310-318
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• 2014

Objectives: This study examined the influence of the resin thickness on the polymerization of silorane- and methacrylate-based composites. Materials and Methods: One silorane-based (Filtek P90, 3M ESPE) and two methacrylate-based (Filtek Z250 and Z350, 3M ESPE) composite resins were used. The number of photons were detected using a photodiode detector at the different thicknesses (thickness, 1, 2 and 3 mm) specimens. The microhardness of the top and bottom surfaces was measured (n = 15) using a Vickers hardness with 200 gf load and 15 sec dwell time conditions. The degree of conversion (DC) of the specimens was determined using Fourier transform infrared spectroscopy (FTIR). Scratched powder of each top and bottom surface of the specimen dissolved in ethanol for transmission FTIR spectroscopy. The refractive index was measured using a Abbe-type refractometer. To measure the polymerization shrinkage, a linometer was used. The results were analyzed using two-way ANOVA and Tukey's test at p < 0.05 level. Results: The silorane-based resin composite showed the lowest filler content and light attenuation among the specimens. P90 showed the highest values in the DC and the lowest microhardness at all depth. In the polymerization shrinkage, P90 showed a significantly lower shrinkage than the rest two resin products (p < 0.05). P90 showed a significantly lower refractive index than the remaining two resin products (p < 0.05). Conclusions: DC, microhardness, polymerization rate and refractive index linearly decreased as specimen thickness linearly increased. P90 showed much less polymerization shrinkage compared to other specimens. P90, even though achieved the highest DC, showed the lowest microhardness and refractive index.

• Journal of Astronomy and Space Sciences
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• 제17권1호
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• pp.87-98
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• 2000

오로라 제트전류에 영향을 미치는 전기장과 전기전도도의 상대적인 기여도를 조사했다. 이 목적 을 위해서 국제자기권연구 (IMS) 기간인 1978년 3월 17-19일 사이에 관측된 지자기변화자료를 이용했다. Allen & Kroehl (1975)의 연구결과를 바탕으로 새로운 AU 및 AL 지수를 정의하였다. 이들은 각각 $1500\leq MLT\leq1800$ 및 $0000\leq MLT\leq0300$ 구간에 위치한 AE 관측소의 지자기변화자료를 이용해 작성되었다. 그리고 이렇게 정의된 지수로부터 동향 및 서향제트전류의 전류밀도를 계산했다. 저녁영역의 전기전도도는 태양의 EUV 복사에 의한 것으로 가정하고 AU 지수에 기여하는 전기장의 분포를 추정하였다. 나아가 저녁과 새벽영역의 전기장분포가 거의 같다는 관측사실로부터 AL 지수에 영향을 미치는 하강오로라입자에 의한 Hall 천기전도도분포를 추정하는 것이 가능했다. 이렇게 얻어진 전기장 및 전기전도도분포는 각각 AU 및 AL 지수와 비교적 높은 상관관계가 있었다. 이것은 AU 및 AL 지수가 각각 직접가동 및 저장-방충과정과 밀접한 관계가 있음을 시사한다.

• 한국정보처리학회논문지
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• 제4권9호
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• pp.2333-2341
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• 1997

하이퍼텍스트 정보를 저장할 때 정보가 삽입, 삭제, 변경되면, 인접한 정보들에 대한 하이퍼텍스트 링크도 변화되어야 한다. 하이터텍스트 링크는 하이터텍스트 색인어를 기준으로 관련있는 다른 정보를 찾는 수단을 제공한다. 따라서 하이퍼텍스트 색인어를 관리하는 것이 동적 정보 저장의 핵심이 된다. 본 논문에서는 새로운 정보가 삽입, 삭제, 변경될지라도 시스템이 안정성을 유지하며, 변경된 부분에 대한 하이퍼텍스트 색인어와 하이퍼텍스트 링크가 동적으로 결정될 수 있는 방법을 제시한다. 이를 위해 동적 색인기를 만들고, 동적 색인기의 동작을 돕기 위해 색인어 사전, 불용어 사전, 조사 사전, 역색인 파일, 시소러스 등을 구성한다.

• 성인간호학회지
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• 제14권1호
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• pp.53-61
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• 2002

Purpose: This descriptive study was designed to investigate Body Mass Index(BMI), weight control behavior, and self-esteem in high school adolescents. Method: The convenience sample consisted of 129 high school females and 106 high school males. Data were collected using a self-report questionnaire from November to December, 1999. BMI was calculated by using the subject's self-reported body weight and height to identify objective obesity. Self evaluation about subjective obesity was measured by a single item question. Preferred BMI was calculated by using the subject's elf-reported body weight and height which the subjects desired. The Rosenberg's Self-Esteem Scale was utilized to measure the level of self-esteem. Results: Results of the study revealed that high school females perceived themselves as more more obese than their the actual BMI, excessively participated in dieting behavior and exercises, and reported lower self-esteem than that of males. Conclusion: Based on this study, health care providers need to educate female adolescents about healthy behavior as well as the normal weight range in BMI.

• 한국환경과학회지
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• 제17권1호
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• pp.29-36
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• 2008

A large amount of $2.1{\times}10^6m^3$ of polluted sediment was dredged from the Masan Bay and deposited in Gapo confined area, Masan, Korea. The six representative sediments were obtained and analyzed for issue components. The data was discussed with the species of benthos and their distribution. It was judged that toxicological effects of sediment analyzed ranged from ERL to ERM with copper and zinc, and ERL with cadmium, chrome, lead and nickel by the Adverse Biological Effects. The dredging index (DI) of sediments stabilized for 10 years since dumping the confined site was calculated and compared with the DI values of dredged sediment itself. DI values decreased from 0.67 to $0.07{\sim}0.18$, which reflects DI value less than 0.2 is good for benthos in the sediment by the natural recovery of dredged materials. The ecological recovery was confirmed in this confined area as a habitat of benthic organisms.

• 한국식품영양과학회지
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• 제16권4호
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• pp.317-322
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• 1987

The Purpose of this study· was to investigate the dietary intake and health for male and female old persons living in Young Dong by mean of questionnaire and interview. The results from the above survey are summerized as follows ; 1. The aged average height, weight, and physical index were 166cm, 60kg, 19.31 in male, 156cm, 50kg, 20.27 in female which were almost the same as the Korean average standard (male; 167. 0cm, 61. 0kg, 21.8, female; 156cm, 53.0kg, 21.8). Among the condition of diseases, neuralgia was 45.3%, hypertension was 12.2%, constipation was 10.4%. 2. Correlation coefficients between systolic blood pressure, diastolic blood pressure and age were significant(P<0.05, P<0.01), and also those between systolic blood pressure, diastolic blood pressure and Body Mass Index were significant(P<0.01, P<0.005). 3. Correlation of food intake frequency of protein group, calcium group, vitamin and mineral group was divided three levels-Good, Fair, Poor. Food intake frequency as the factors(three groups) which might influence the condition of health was partly significant (P<0.05, P<0.1).

• 한국지역사회생활과학회지
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• 제20권1호
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• pp.91-102
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• 2009

The purpose of this study was to analyze the effect of home related variables like socio-demographic variables, parent-child communication, and concern for children's education on children's school adjustment. The data was collected from 287 elementary school children living in Gyunggido. Measurement scales included the children's school adjustment inventory, the questionnaire of the socio-demographic variables, the parent-child communication index, and the parent's concern about children's education index. Results showed that children's school adjustment was significantly effected with regard to: father's age, father's education, mother's education, income, and mother's job. Correlation analysis indicated that parent-child open communication was positively correlated to children's school adjustment; that is the relationships with teachers and with friends, study at school, and rule of school. As well, parent-child problematic communication was negatively correlated to all of the school adjustment variables. Parent's concern about children's education indicated positive correlations with all of the school adjustment variables. It was also found that: parent's concern about children's education, parent-child open communication, parent-child problematic communication, mother's education, and income were significant predictors of the children's school adjustment.