국내 중소형 컨테이너항만 물동량에 영향을 미치는 요인에 관한 연구

Port is responsible for the important role that creates a lot of value-added export and import-intensive countries, critical infrastructure, and in the national economy. Despite being an important facility for the past, awareness of the port is insufficientIn 2000s, increasing the world container traffic volumes, China's economic development, and trade volume in the Northeast Asia to generate a lot of are changing the perception of the role and importance of the port. Looking at Korean ports, the Busan port and Gwangyang port have been promoted to become a center port to port (Two- Port) policy as a major Hub Port in Northeast Asia. Incheon is located in the center of China's processing trade volume and freight in the metropolitan area. Looking at the trading country in Incheon, Freight cargo of China accounts for a significant proportion of container cargos. Also Ulsan port being recognized as such supporting port of behind industry establishes port features and development direction. According to the review of the master plan and the port recognition in Korean Port, this study examines determining factors which affects the port cargo volume. The target of the study is domestic small and medium-sized container port that receives a large hinterland cargo volume, excluding the impact of the Global Hub Port like Busan and Gwangyang port. Factors that affect the multiple regression analysis result of the port cargo volume are handling capacity, degree of activation, connection number of countries, GRDP and number of manufacturers.제1장 서론 1.1 연구의 배경 및 목적 1 1.2 연구의 내용 및 방법 3 1.3 논문 구성 3 제2장 선행연구 검토 2.1 선행연구검토 5 2.2 시사점 12 제3장 국내 항만현황 3.1 전국항만 물동량현황 14 3.2 항만별 물동량 및 시설 현황 15 제4장 분석방법 및 실증분석 4.1 분석방법 24 4.2 실증분석 27 4.3 분석결과 29 제5장 결론 5.1 결론 34 5.2 연구의 한계 및 향후 연구방향 36 참고문

Knowledge and Attitude Regard to Cord Blood of Early Postpartum Women after Donating Cord Blood or Storing Cord Blood.

PURPOSE: There is increasing necessity of using cord blood cell worldwide. In order to improve the effectiveness of cord blood's usage in Korea, the study of knowledge and attitude regarding cord blood is needed. METHODS: As descriptive correlation study, data was collected from 212 early postpartum women who stored or donated cord blood from 2007 April to July. Data was analyzed using chi-square-test, t-test, ANOVA, and logistic regression. RESULTS: Total score of knowledge and attitude of early postpartum women who donated cord blood was higher than who stored. According to the source of education and the source of influence toward decision of using cord blood, early postpartum women who educated or influenced by mass media showed difference in attitude. Job status and income, and attitude of cord blood were the predictor of cord blood donation. CONCLUSION: Attitude regard to cord blood affect to usage of cord blood, and the attitude and knowledge of cord blood in early postpartum women who donated it higher than who storedope

Factors Influencing Satisfaction with Patient-Controlled Analgesia Among Postoperative Patients Using a Generalized Ordinal Logistic Regression Model

Purpose: The purpose of this study was to identify the factors affecting the satisfaction with patient-controlled analgesia (PCA) of patients using a generalized ordinal logistic regression model and to evaluate the difference in results of the ordinal regression from those of binary regression. Methods: The study design involved secondary analysis of electronic medical records from a single tertiary care hospital in Seoul, Korea. It included 2,409 patients treated with PCA for postoperative pain management after open or laparoscopic abdominal surgery. Binary logistic regression and generalized ordinal logistic regression were used to identify factors affecting satisfaction. Results: Binary logistic regression analysis showed that there was insufficient information for analysis. Generalized ordinal logistic regression revealed that sex, age, pain, PCA usage, and side-effects were common factors affecting PCA satisfaction. However, the effect of some factors affecting PCA satisfaction differed with the level of satisfaction. In open surgery patients, the effect of pain at 6 hours after surgery was significantly greater in the group with lower satisfaction. While, in the laparoscopic surgery patients, the effect of pain at 6-24 hours after surgery was significantly greater in the group with lower satisfaction. Conclusion: Generalized logistic regression may be an appropriate statistical method for analyzing ordinal data. Degree of postoperative pain and assessment interval are the most important factors associated with PCA satisfaction. Because the factors affecting PCA satisfaction were different for the two types of abdominal surgeries, customizing PCA to individual patients may potentially improve pain management and consequently increase PCA satisfaction.ope

Impact of Life Style Characteristics on Prevalence Risk of Metabolic Syndrome

Purpose: The goal of this study was to evaluate the impact of life style characteristics on the prevalence risk of metabolic syndrome (MS). Methods: A total of 581 adults were recruited from a cardiovascular outpatient clinic. A newly developed comprehensive life style evaluation tool for MS patients was used, and patient data related to the MS diagnosis were reviewed from the hospital records. Results: The overall prevalence of MS was 53.2%, and the mean of MS score was 2.6 for patients at a cardiovascular outpatient clinic (78% of the patients had hypertension). Dietary habits among the life style characteristics had significant influence on the prevalence risk of MS and MS scores. And also interestingly, the classification and regression tree (CART) model suggested that the high prevalence risk groups for MS were older adults (61.5≤age<79.4), and adults between 48.5 and 61.5 yr of age with bad dietary habits. Conclusion: This study indicates that nurses should focus on dietary habits of patients (especially patients classified as high prevalence risk for MS) for improvement and prevention of MS prevalence riskope

A Quantile Regression Analysis of Factors Associated with First-Time Maternal Fatigue in Korea

The aim of this cross-sectional study was to identify the factors associated with different percentiles of first-time maternal fatigue. A total of 123 first-time healthy mothers aged 18 years or older participated through an online survey. The fatigue was measured by the Korean version of the fatigue severity scale. Main variables were constructed based on the integrated fatigue model, which included mothers' sleep quality, parenting stress, the amount of free time mothers have, the number of the child's night wakings, general characteristics including socioeconomic status, and working status. Quantile regression was used to analyze the associated factors according to the fatigue level of first-time mothers with a young child. The mean age of the mothers and children were 32.11 years and 20.81 months, respectively. Mean fatigue score was 6.16 among the 75% quantile with high fatigue score. Lack of adequate free time in mothers, advanced maternal age, being a housewife, having a moderate income, and frequent night wakings of their child significantly increased fatigue among mothers in the third quantile of fatigue. To reduce fatigue, healthcare providers should focus on exploring ways to reduce maternal sleep disturbance and improve maternal sleep quality.ope

Health-related quality of life among older adults who experienced the Pohang earthquake in South Korea: A cross-sectional survey

Background: Earthquakes are global natural disasters and can cause loss of property, livelihood and affect human health. A 5.4 magnitude earthquake, the Pohang earthquake, occurred in South Korea in 2017. In this study, based on a health-related quality of life (HRQOL) conceptual model, we examined the HRQOL and its associated factors among older adults who had experienced the earthquake. Methods: A cross-sectional study was conducted with a quota sample of 312 older adults living in eight villages of a district that was the most damaged area during the Pohang earthquake. Data were collected from January 15-March 19, 2019, via face-to-face interviews using structured questionnaires. Structural equation modeling was performed to explore the associations among depression, posttraumatic stress symptoms, community resilience, social support, disaster preparedness, and HRQOL. Results: The mean age of the participants was 77.93 ± 6.11 years. HRQOL scores were 49.85 ± 18.07 (physical health), 50.16 ± 18.75 (psychological health), 61.93 ± 19.20 (social relations), and 49.53 ± 16.37 (environment). The structural equation modeling analysis showed a good fit. Depression had direct (β = - 2.21; p < 0.001), indirect (β =- 0.23; p < 0.001), and total effects on HRQOL (β = - 2.44; p < 0.001). Community resilience (β = 6.05; p = 0.001) and social support (β = 0.12, p = 0.001) had direct and total effects on HRQOL. Disaster preparedness had indirect (β = 0.40; p = 0.001) and total (β = 0.69, p = 0.031) effects on HRQOL. In contrast, posttraumatic stress symptoms did not have significant effects on HRQOL. Conclusions: Our findings indicated that lower depression, higher community resilience, social support, and disaster preparedness were associated with increased HRQOL. Thus, it is helpful to decrease depression and strengthen community resilience, social support, and disaster preparedness to promote HRQOL among older adults who have experienced earthquakes. These results can inform the development of HRQOL in socio-psychological improvement programs for older adults in community health centers and disaster-relief psychological support centers.ope

Quality of life among Korean gastrointestinal cancer survivors

PURPOSE: The number of gastrointestinal (GI) cancer survivors has been steadily increasing owing to early diagnosis and improved cancer treatment outcomes. The quality of life (QoL) of cancer survivors can provide distinct prognostic information and represent their functioning. This study aimed to investigate the levels of symptoms, psychological distress, and QoL of GI cancer survivors, and identify factors associated with QoL. METHOD: A cross-sectional survey was conducted among 145 survivors of gastric or colorectal cancer in a university-affiliated hospital, Seoul, South Korea. The questionnaire consisted of the M. D. Anderson Symptom Inventory Gastrointestinal Cancer Module, Distress Thermometer, and brief version of the World Health Organization Quality of Life Assessment Instrument. Quantile regression was used to assess the associated factors of QoL. The 10th, 25th, 50th, 75th, and 90th conditional quantiles were considered. RESULTS: The most common symptoms were fatigue (24.9%), numbness or tingling (17.2%), feeling bloated (17.2%), dry mouth (15.9%), and difficulty remembering (11.8%). Thirty-two percent (47/145) of the participants reported severe distress. A level of symptoms was significantly associated in the 10th and 25th quantiles, representing poor QoL. Economic burden was a significant influencing factor in all quantiles. CONCLUSION: Our results indicate that high burden from symptoms might be associated with lower QoL in GI cancer survivors, and higher economic burden from cancer treatment was associated with lower QoL. These results suggest that symptom management and support for economic difficulties should be included in the strategies to enhance the QoL of GI cancer survivors.ope

Research of efficiency improvement for 2 K Helium JT refrigerator

학위논문(석사) - 한국과학기술원 : 기계공학과, 2017.2,[v, 73 p. :]본 연구에서는 2 K 줄-톰슨 냉동기에 활용하기 위한 분배된 줄-톰슨 효과 열 교환기를 설계 및 검증 실험을 진행하였다. 줄-톰슨 밸브에서 필요한 모든 압력 강하를 일으키는 일반 줄-톰슨 냉동기와는 달리, 분배된 줄-톰슨 효과를 이용한 열 교환기는 열 교환기 고압부를 흐르는 유체가 모세관을 지나도록 하여 연속적인 압력강하를 만들어 낸다. 이러한 연속적인 압력 강하는 열 교환기에서 고압부 유체가 더 많은 열 교환을 일어나게 해줌으로써 냉동기의 효율을 개선시킬 수 있다. 분배된 줄-톰슨 효과 열 교환기 설계에서 압력 강하를 예측하는 것이 매우 중요하므로, 실제 2 K 냉동기에 적용되는 열 교환기에 사용하기 위해서, 20,000 ~ 35,000 범위의 높은 레이놀즈 수 범위에서 모세관의 길이 및 형상에 따른 압력 강하를 정량적으로 분석하는 실험을 진행하였다. 마지막으로, 2 K 냉동기에 사용될 분배된 줄-톰슨 효과 열 교환기를 설계 및 제작하였고 이를 실증하는 실험을 진행하였다.한국과학기술원 :기계공학과

Factors influencing death anxiety of nursing students

This study aimed to identify factors influencing nursing students’death anxiety according to four separate sub-scales and levels of death anxiety. 162 nursing college students from two universities completed self-reported questionnaires that contained items on individual characteristics, self-esteem, satisfaction with life, depression and death anxiety. Data were analyzed using multiple linear regression and quantile regression. Self-esteem had a significant effect on anxiety of death and dying of self under 25 percentile, but anxiety of dying of others was significant at 75%. Especially experience of death of close others (50%, 75%), experience of death of patients in clinical setting (75%), frequency of the thought about death (10%, 25%, 75%, 90%) were significantly related to anxiety of self, but unrelated to death anxiety of self. The findings highlight that there were heterogeneous influencing factors among subscales and levels of death anxiety. Therefore intervention strategies for decreasing death anxiety for good EOL care should be tailed to subscales as well as levels of death anxiety of the nursing students.ope