• 한국작물학회지
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• 제43권2호
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• pp.101-104
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• 1998

This study was conducted to establish a rapid analysis method for determining protein and moisture contents of pea. Ninety and eighty pea (Pisum sativum L.) lines were analyzed to determine protein and moisture contents, respectively using near-infrared reflectance spectroscopy. Simple correlations (${\gamma}$) of protein content in a ground sample and an intact grain sample by an automatic regression method were 0.978 and 0.910, respectively. Simple correlations by partial least square regression/principal component analysis (PLS/PCA) methods were 0.982 and 0.925, respectively. Standard error of performance (SEP) in protein content was the lowest value, 0.446 in ground sample by PLS/PCA methods. Simple correlation of moisture content was the highest at 0.871 in ground samples. when using a standard regression method. Accuracy for the moisture content was slightly lower than for protein content. It was concluded that the NIRS method would be applicable only for rapid determination of protein content in pea.

• 응용통계연구
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• 제19권3호
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• pp.407-419
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• 2006

본 연구에서는 최근 몇 년 동안 한국에서 사회적으로 큰 문제가 되고 있는 카드이용 고객의 연체 방지를 위해 기존 금융권을 이용하는 개인에 대한 연체 성향 분석을 수행한다. 연체 성향 분석의 대상은 현재 한국의 한 특정 은행 고객으로 하였으며, 여러 연체 가운데 신용카드 연체를 중심으로 연구하였다. 연체 성향과 요인이 분석되면 기존 은행 고객에 대한 향후 부실의 정도를 예측할 수 있으며 또한 미래의 고객에 대해서도 신용평가 시스템을 만들 수 있을 것이다. 연체 성향 분석을 위한 통계적 방법으로 연체 유/무에 대한 로지스틱 회귀모형을 적용하였고 연체가 있을시 연체금액에 대한 일반화 선형 모형을 적용하여 자료를 적합한 후, 유의한 설명변수들을 선정하여 반응변수와 설명변수들의 관계를 설명해 보았다. 분석 결과 연령, 건당 현금서비스 평균금액, 타사 현금금액, 수신잔액, 순수익이 연체 유무와 연체금액에 중요한 영향을 미치는 설명변수들임을 알 수 있었다.

• Journal of Microbiology and Biotechnology
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• 제25권7호
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• pp.1163-1169
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• 2015

Poly-gamma-glutamic acid (γ-PGA) is a natural polymer that is synthesized by Bacillus species and has been reported to have antitumor activity. The aim of this study was to investigate the effect of γ-PGA on the treatment of vaginal intraepithelial neoplasia (VAIN). A retrospective observational study on γ-PGA therapy for biopsy-proven VAIN was conducted. The efficacy was assessed by evaluating the results of Pap cytology and the viral load of high-risk HPV at three time points: at enrollment, and at the first and second post-treatment visits. Of 17 patients treated with γ-PGA, only 12 patients who had a high-risk HPV infection were included in the analysis. Histology was VAIN1 in seven patients, VAIN2 in two patients, and VAIN3 in three patients. γ-PGA was administered for newly diagnosed VAIN in five (41.7%) patients and persistent VAIN in seven (58.3%) patients for the mean time of 4.5 months. At the first and second post-treatment visits, cytological regression was observed in five (41.7%) and six (50%) patients, respectively. Regarding the HPV load, the overall response rate was 66.7%, and the mean level was 670.6 ± 292.5 RLU at the first follow-up, which was lower than the initial viral load of 1,494.8 ± 434.5 RLU (p = 0.084). At the second follow-up, the overall response rate was 58.3%, and the mean viral load level was 924.2 ± 493.7 RLU. γ-PGA may be helpful for the cytological regression and reduction of viral load in patients with high-risk HPV-positive VAIN, suggesting that γ-PGA is a promising treatment option for primary or persistent VAIN.

• Journal of the Korean Data and Information Science Society
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• 제23권6호
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• pp.1173-1181
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• 2012

특성화고등학교와 일반계고등학교 학생들의 수학교과에 대한 태도를 비교 검토하고, 수학교과의 기초학습능력에 영향을 주는 요인을 파악하여, 특성화고에서 수학교과를 가르치는 교사들에게 효율적으로 수학교과를 교수 학습하는 방안을 마련하는 기초자료를 제공하고자 한다. 고등학생 654명을 대상으로 설문조사를 실시하여 통계분석하였다. 설문지에 대한 타당성과 신뢰성을 검토하고, 그 자료에 대하여 카이제곱검정과 감마값을 통하여 학교급 및 학년과 내 외적 요인들의 관련성을 분석한다. 또한 수학교과 기초학습능력이 학교급과 학년사이에 차이가 있는지 일반화선형모형을 적합해 본다. 그리고 기초학습능력에 영향을 주는 내 외적 요인을 회귀분석의 단계적 변수선택방법을 이용하여 찾아본다.

• 보건행정학회지
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• 제24권1호
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• pp.35-46
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• 2014

Background: This paper describes the relationship and effect of health examination on personal medical cost by identifying the difference of the cost for medical care in physician visit between the population without and with health examination. Methods: After classifying into three cohorts in which, independent variables were designed according to the Andersen's behavioral model, the association of personal medical cost for medical care and prescription drugs which is dependent variable was analyzed by t-test and Mann-Whitney test for description and gamma regression model for inference. Results: In personal average medical cost, the population with health examination paid significantly more than without health examination, 11.6% more in cohort 2008, 26.6% more in cohort 2009, and 48.0% more in combined cohort. The odds ratio on medical expenditure of outpatients with health examination was 1.067, 1.126, 1.398 significantly in cohort 2008, 2009, and combined cohort respectively, comparing to the group without health examination. In independent variables, that is female, the elderly, never married, non-working, non-metropolitan, the higher family income, the smaller family size, people with disability, the people with chronic disease, and people with health examination have significantly being paid more tendency showing positive association with medical cost. Conclusion: This result showed that medical expenditure in physician visit has been increased after taking a health examination. Therefore reasonable limitation of getting preventive medical service is suggested to avoid medical shopping around and reduce being repeated health examination by unifying control to find out easily the clinical results from various medical facilities.

• 한국직업건강간호학회지
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• 제22권4호
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• pp.324-333
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• 2013

Purpose: This study was conducted to compare the changes in the levels of liver enzymes after providing health education to workers. Methods: Among 909 electronics-manufacturing workers, 96 (10.6%) workers had abnormal liver functions. Of these, male workers were randomly assigned into either the health education experimental group (48 [52.2%]) or the control group (44 [47.8%]). Depending on the level of participation in the health education, workers in the experimental group were classified into the participation (32 [34.8%]) and non-participation groups (16 [17.4%]). Changes in the levels of liver enzymes were compared among three groups. Results: The changes in the levels of gamma-glutamyltransferase (r-GTP) in the participation, non-participation, and control groups were $-25.3{\pm}54.5$ IU/L, $-4.4{\pm}24.1$ IU/L, and $-5.3{\pm}38.8$ IU/L, respectively (p=.036). Aspartate transaminase, alanine transaminase, waist circumference, body mass index, daily alcohol consumption, weekly exercise, and changes in smoking habits in the 3 groups did not differ significantly. In the multiple linear regression analysis, the variable of education participation revealed a significant regression coefficient of -25.10 when the change in r-GTP levels was the dependent variable. Conclusion: A brief health education targeted towards the management of liver disease among workers improved r-GTP levels.

• 임상간호연구
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• 제26권1호
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• pp.97-106
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• 2020

Purpose: This study was conducted to investigate the incidence and associated factors with post-traumatic stress disorders (PTSD) in patients with intensive care units (ICU) admission experience. Methods: This study is a retrospective observational study using self-reporting questionnaire. Patients who were admitted to ICU more than 72 hours and agreed to participate were enrolled in this study. PTSD were assessed by Korean version of post-traumatic diagnosis scale, and PTSD was defined as 20 points or more. Medical records of participants were reviewed to identify influencing factors of PTSD. To analyzed the data, descriptive statistics, Mann-Whitney U test, Kruskal-Wallis test and gamma regression were utilized using SPSS/WIN 23.0 program. Results: A total of 128 patients participated in the study. Mean age of participants was 58.3±11.7 years and 50 patients (39.1%) were female. Mean duration of ICU stay was 8.43±8.09 days and PTSD was diagnosed in 12 patients (9.4%). In the results of a Gamma regression analysis, Psychiatric history (B=1.09, p=.002), APACHEII score (B=.04, p=.005), CPR experience (B=1.65, p=.017) and physical restraint (B=.68, p=.049) were independently associated with PTSD occurrence. Conclusion: The results of this study suggest that a various factors influencing PTSD should be identified to prevent PTSD in patients who requires ICU care. In addition, post-ICU care programs are required to assess and reduce PTSD.

• 응용통계연구
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• 제36권6호
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• pp.591-618
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• 2023

본 논문은 보험 손실 추정을 위한 회귀 설정에서 다양한 분포 가정의 성능을 실제 데이터를 사용하여 비교 분석합니다. 감마 분포는 일반적으로 보험의 손실 분포의 비대칭성을 처리하는 데 사용됩니다. 그러나 최근 연구는 보험자료의 분석에 있어서 손실 분포의 두꺼운 꼬리의 중요성을 강조합니다. 실제 주택 화재 보험 데이터 분석을 통해 우리는 회귀 방법에서 다양한 분포 가정의 효과를 비교합니다. 우리의 결과는 보험손실에 대한 분포 가정의 선택이 "초과 손해 보험" 및 "한도 보험"을 포함한 다양한 보험 상품의 보험료 결정에 중요하다는 것을 보여줍니다. 또한 주택 화재 보험의 통계적 모형설정에 있어서 실제 고려 사항에 대해 논의합니다.

• 한국ITS학회 논문지
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• 제14권5호
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• pp.23-29
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• 2015

본 연구는 차량운전의 주체인 인간이 실제 차량을 운전하면서 나타나게 되는 수많은 반응 중 생체정보인 뇌파를 측정 장비를 이용하여 도로주행 중 발생하는 뇌파를 수집하고 수집된 자료를 바탕으로 하여 실험횟수, 주행시간에 따른 변화, 도로 기하구조에 따른 변화 등 요인을 추출하고 분석을 실시하였다. 주행실험 중 발생한 뇌파 변화를 분석에 필요한 알파(${\alpha}$)파, 베타(${\beta}$)파, 감마(${\gamma}$)파의 형태로 1차 추출을 한 후, 실험 전 구간에서의 뇌파 발생 빈도와 변화율을 추출하고 실험 횟수에 증가에 따른 학습효과를 관찰하고자 회귀모형을 적용하여 뇌파 특성에 따른 빈도변화를 계산하였다. 그 결과, 실험 횟수에 따라 뇌파는 개인차에 의한 변화를 보였으며 이는 같은 구간을 반복적으로 주행함에 따라 운전자가 도로 기하구조와 신호, 안전시설 등을 기억함에 따라 익숙하고 편안하게 주행하고 있음을 확인할 수 있었다.

• 보건교육건강증진학회지
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• 제16권1호
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• pp.149-166
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• 1999

Self-care and the performance of their own role might be important for the prevention of complications and improvement of quality of life in hemodialysis patients with chronic renal failure(CRF). To improve well-being and quality of life for the patients, the author estimated the level of self-care and associating factors through a questionnaire. The information was composed of the knowledge for hemodialysis and renal disease, the level of self-care, health belief, supports from the family, disease-related stresses, personal characteristics, medical history, relationships with medical personnel, etc. The data was gathered from 126 hemodialysis patients who were undergoing hemodialysis in one university hospital and five hospitals in Kyungsangnam-Do area from December 1997 to January 1998, and was analyzed by PC SAS program(version 6.12) with the level of significance($\alpha$=0.05). The mean age of subjects was 47.0$\pm$13.5years with no significant difference in gender distribution. The mean duration of hemodialysis was 39.0 months, and their frequencies of hemodialysis were more than three times per week(77.0%). Only 21.4% had the specific education on hemodialysis and CRF. In the level which was expressed as the score out of 100, the mean of knowledge was 90.7$\pm$9.1 and the mean of self-care was 73.9$\pm$12.7, that means, they only partially carried their knowledge into practice. They showed a significant correlation between knowledge and health belief($\gamma$=0.282); self-care and health belief($\gamma$=0.357), family supports and knowledge($\gamma$=0.221), self-care($\gamma$=0.402), health belief($\gamma$=0.431); and health belief and stress($\gamma$=-0.361). Age, religion, marrital status, education, and relationships with medical personnel showed positive correlations, and smoking showed negative correlation with self-care. In the multiple regression with the level of self-care as dependent variable, and each of the characeristics as independent variables, supports from the family($\beta$=6.615=0.158), the experience of disease specific education($\beta$=4.959), relationships with medical personnel($\beta$=6.615), current smoking($\beta$=-6.986), and current drinking ($\beta$=-7.095) were detected as significant factors. The value of R-square was 34%. In summary, to promote the level self-care and to improve the well beings and Quality of life for the hemodialysis patients, it would be emphasized that they terminate smoking and drinking, and it would be recommended that the education programs and supports from the family be strengthened. And, because there was a considerable difference between the level of knowledge and self-care, it would also be emphasized to propose the education programs which focused on execution. In addition to that, there is a need to improve relationships between the patients and medical personnel through positive changes in the attitudes of the medical personnel.