• Korean Journal of Fisheries and Aquatic Sciences
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• v.40 no.6
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• pp.367-373
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• 2007

We assessed the stock of the southern bluefin tuna (SBT, Thunnus maccoyii) by applying the MULTIFAN-CL model. The model is spatially disaggregated, with the population and fisheries stratified into a number of regions within the overall stock range. Catch, effort, length-frequency, and tagging data from 1965 to 2003 were stratified by three regions and four quarters (Jan-Mar, Apr-Jun, Jul-Sept and Oct-Dec). These data were used to estimate the instantaneous fishing mortality (F), biomass, spawning biomass, recruitment, and so on. The Commission for the Conservation of Southern Bluefin Tuna (CCSBT) used only Japanese data and did not consider migration for the SBT stock assessment. By contrast, we used Japanese, Australian, New Zealand, Taiwanese, and Korean data, and considered migration. As a result, the estimated annual average F of all age classes was 0.073/yr and the F of age class 6-10 was the highest. The results also showed that the biomass and recruitment of SBT had declined significantly after 1965. Compared with the CCSBT results, the estimated spawning biomass in this study was lower and more uncertain. However, we will conduct a sensitivity analysis to get more accurate biological parameters and results. In addition, we need to use the bootstrap resampling method to quantify the uncertainty.

• Journal of Korean Academy of Nursing
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• v.32 no.3
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• pp.344-354
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• 2002

This study is a fact-finding research to understand the status of visiting nursing services operated by health centers in Korea and it aims to provide basic information for policy development on operation and management of visiting nursing services in health centers. Method: This study investigates the results of visiting nursing services in 242 health centers from Jan. 10 through Dec. 30, 2000, where 3,106 visiting nurses were employed by the public work program. Result: In 2000, 129,401 new household as service recipients was identified and that was 0.9% of Koreas total households (15,137,000), and 5.8% of low income households (2,242,000). The highest high risk group was dementia patients(aver. 55.2/1,000 person). Average number of households visited by visiting nurse were 4.5 households per day and the first-visited houses per visiting nurse were 1.1 households per day. The re-visiting rate was 71.3%. Total 4,059,130 service items were provided and assessment ranked the highest with 33.7%. The satisfaction level of clients on the nurses was an average of 3.17 points in the scale of 4 and the nursing service was a 2.60 points in a scale of 3. Conclusion: Visiting nursing service should continue to provide comprehensive healthcare services in cost-effective ways while cooperating with others

• The Korean Journal of Health Service Management
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• v.7 no.1
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• pp.133-144
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• 2013

The present study is aimed at assessing medical service quality as perceived by in-patients of geriatric hospitals and at analyzing the excitement factors by using revised IPA Applying the Kano's model for users' satisfaction. The data was collected from Nov. 5 to Dec. 7, 2012. Among a total of 503 cases of questionaries, only 419 cases were used. To data were analyzed by PASW statistics 18.0 and revised IPA applying Kano's model. The paired t-test results reveal that satisfaction was higher than the expectation level at a statistically significant level across all the medical service quality factors. The revised IPA results categorized facility convenience, hospitalization and care, and kindness as basic factors and medical reliability and access as excitement factors. In conclusion, medical reliability and access, which were identified as excitement factors of medical service quality, are essential opportunity factors for users and should accordingly be used as strategic factors to increase satisfaction with a geriatric hospital and induce customer surprise.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.23 no.6
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• pp.475-483
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• 1990

An assessment of Kuwait's commercial fish stocks: hamoor (Epinephelus tauvina), zobaidy (Pampus argenteus), nakroor (Pomadasys argenteus) and sheiry (Lethrinus nebulosus), was conducted using length-frequency data, mean growth and mortality estimates obtained during 1981$\~$1988. The length-cohort analysis indicated that increases in fishing effort would not lead to long-term gains in yield of the stocks at the current estimate of natural mortality rate (M). At high M which was assumed arbitrarily, some benefit in yield could be obtained, especially for hamoor and sheiry. At low M, the yield of all stocks decreased with increased fishing effort. Increases in fishing effort resulted in significant dec-line in spawning stock size for all the stocks. Yield-per-recruit analysis indicated that, un-der low M assumption, a higher yield can be obtained for zobaidy and nakroor by reducing fishing effort. At moderate M, decreases in fishing effort brought gains in yield per recruit of the stocks, but it was not substantial compared with the present level of M. At high M, most of the stocks reached the maximum yield-per-recruit. Overall, increased fishing effort either will not be associated with large long-term gains in yield or, in some stocks, might cause a decline from the present level.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.8
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• pp.3747-3750
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• 2012

Aim: The aim of this study was to investigate the quality of life (QOL) of breast cancer patients by using the Functional Assessment of Cancer Therapy-Breast (FACT-B) questionnaires. Methods: A total of 522 adult patients who were admitted to our hospital with breast cancer were collected during the period of Jun. 2007 to Dec. 2009. Results: Our FACT-B questionnaire study suggested that women below 50 years old, employed, higher education and annual income, lower TNM stage and receiving modified radical mastectomy manifested significantly better QOL using the assessment tool of the FACT-B subscale. Moreover, regression analysis indicated patients with young age, low stage cancer, high education and income were more likely to have high score of QOL, with ORs (95% CI) of 2.8 (1.52-4.56), 2.1 (1.15-3.95), 3.1 (1.45-5.12) and 3.54 (1.54-5.43), respectively. Conclusions: Our study showed younger age, lower stage of cancer, higher education and income could influence the QOL of breast cancer patients in our Chinese population. Further large sample studies are still needed for confirmation.

• Journal of Korean Neurosurgical Society
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• v.29 no.11
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• pp.1499-1504
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• 2000

Objectives : In general, conventional T2, T3 thoracoscopic sympathicotomy must be one of the most effective treatments for the essential palmar hyperhidrosis. However, this is offset by the occurrence of a high rate of side effects, such as embarrassing compensatory sweating and Hornor's syndrome. The authors have performed a selective T3 thoracoscopic sympathicotomy to our patients to see whether it provides successful results with less side effects. Its preliminary results were compared with those of conventional T2, T3 thoracoscopic sympathicotomy. Methods : The thoracoscopic sympathicotomy was performed in 54 patients suffering from essential palmar hyperhidrosis. Twenty-four patients underwent a conventional sympathicotmy(group A) from Jan 1997 to Dec 1997 and 30 patients a selective T3 sympathicotmy(group B) from Jan 1998 to Dec 1999. For assessment of postoperative success and of complications all patients charts were reviewed. Patients further received a postal questionnaire regarding long-term effect, satisfaction, and side-effects. Results : No recurrence was observed in both groups. The global rate of compensatory sweating was significantly(p ＝0.020) different in both groups : 11 patients(45.8%) in group A and 5 patients(16.73%) in group B. The Hornor's syndrome was observed only in 4 patients in group A. The preliminary results of the procedure in group A were considered fully-satisfying by 16 patients(66.6%), 6 patients(25%) were satisfied partially, and only 2 patients(8.3%) were dissatisfied, and those of the procedure in group B satisfying by 26 patients(86.6%), 4 patients(13.3.% ) were satisfied partially, and none dissatisfied. Conclusion : The selective T3 sympathicotomy results in a significant decrease in the rate of disturbing side effects comparing to conventional T2, T3 sympathicotomy and it dose not lead to recurrence. Our results contribute to recommendations of a selective T3 thoracoscopic sympathicotomy as treatment of choice in essential palmar hyperhidrosis.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.6
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• pp.438-448
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• 2016

This study was conducted to identify factors influencing the weight control behavior of college students. The subjects included college students in the C area, and data were collected through a self reported structured questionnaire from Dec 01 to 20 of 2015. Overall, 289 subjects were analyzed. Analyses consisted of descriptive statistics, t-tests, ANOVA, Pearson's correlation analysis, and stepwise multiple regression analysis. The findings showed a prominent distortion of college students' perceptions of their bodies based on evaluation by others and obesity stress, which had special impacts on their weight control behavior. Weight control behavior, body self-awareness (r=.31, p<0.001), assessment of body by others (r=.30, p<0.001), and obesity stress (r=.43, p<0.001) were closely related to their weight control behavior. Stepwise multiple regression revealed that their weight control behavior was closely influenced by obesity stress (${\beta}=.37$, p<0.001) and assessment of body by others (${\beta}=.15$, p=0.009). These variables accounted for 20% of the weight control behavior (F=37.30, p<0.001). Overall, assessment of body by others and obesity stress were found to be predictors of their weight control behavior. These findings indicate that it is necessary to develop and implement information programs and design appropriate prevention programs that can induce healthy weight control behaviors. Such programs should include health education, as well as intervention programs to identify such predictors and help college students judge and perceive their body shapes objectively so that they control their weight in a proper manner.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.3
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• pp.1077-1082
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• 2016

Background: The three standard biomarkers used in breast cancer are the estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2). The Ki-67 index, a proliferative marker, has been shown to be associated with a poorer outcome, and despite absence of standardization of pathological assessment, is widely used for therapy decision making. We aim to study the role of the Ki-67 index in a group of Asian women with breast cancer. Materials and Methods: A total of 450 women newly diagnosed with Stage 1 to 3 invasive breast cancer in a single centre from July 2013 to Dec 2014 were included in this study. Univariable and multivariable logistic regression was used to determine the association between Ki-67 (positive defined as 14% and above) and age, ethnicity, grade, mitotic index, ER, PR, HER2, lymph node status and size. All analyses were performed using SPSS Version 22. Results: In univariable analysis, Ki -67 index was associated with younger age, higher grade, ER and PR negativity, HER2 positivity, high mitotic index and positive lymph nodes. However on multivariable analysis only tumour size, grade, PR and HER2 remained significant. Out of 102 stage 1 patients who had ER positive/PR positive/HER2 negative tumours and non-grade 3, only 5 (4.9%) had a positive Ki-67 index and may have been offered chemotherapy. However, it is interesting to note that none of these patients received chemotherapy. Conclusions: Information on Ki67 would have potentially changed management in an insignificant proportion of patients with stage 1 breast cancer.

• Journal of The Korean Society of Agricultural Engineers
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• v.58 no.5
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• pp.81-90
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• 2016

Due to droughts and water shortages causing severe damage to crops and other vegetations, much attention has been given to efficient irrigation for upland farming. However, little information has been known to measure soil moisture levels in a field scale and apply their spatial variability for proper irrigation scheduling. This study aimed to characterize the spatial variability and temporal stability of soil water contents at depths of 10 cm, 20 cm and 30 cm on flat (loamy soil) and hill-slope fields (silt-loamy soil). Field monitoring of soil moisture contents was used for variogram analysis using GS+ software. Kriging produced from the structural parameters of variogram was applied for the means of spatial prediction. The overall results showed that the surface soil moisture presented a strong spatial dependence at the sampling time and space in the field scale. The coefficient variation (CV) of soil moisture was within 7.0~31.3 % in a flat field and 8.3~39.4 % in a hill-slope field, which was noticeable in the dry season rather than the rainy season. The drought assessment analysis showed that only one day (Dec. 21st) was determined as dry (20.4 % and 24.5 % for flat and hill-slope fields, respectively). In contrary to a hill-slope field where the full irrigation was necessary, the centralized irrigation scheme was appeared to be more effective for a flat field based on the spatial variability of soil moisture contents. The findings of this study clearly showed that the geostatistical analysis of soil moisture contents greatly contributes to proper irrigation scheduling for water-efficient irrigation with maximal crop productivity and environmental benefits.

• Journal of Korean Critical Care Nursing
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• v.2 no.1
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• pp.58-68
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• 2009

Purpose: The treatment effects and operation status of continuous renal replacement therapy (CRRT) for acute renal failure patients have been investigated. Method: Two expert nurses reviewed the records of 731 patients undergoing CRRT in an intensive care unit of a general hospital from Jan. 2002 to Dec. 2006 with the CRRT assessment sheet and situation sheet developed for this study. Results: The number of patients received CRRT increased from 90 in 2002 to 194 in 2006. The most common indication for CRRT was azotemia (40.0%). Before CRRT treatment, patients were 78.6 ($\pm55.5$) of BUN value and 5.0 ($\pm3.2$) of Cr. value. The standard values of BUN and Cr. were lowered. Compared the survival group with the death group, there were significant differences among the medical departments and the main diagnosis group. Their BUN and creatinine value, APACHE II score, mean blood pressure, and oliguria were significantly different (p<0.05). Conclusion: This survey demonstrates a trend that patients receiving CRRT has been increased. We suggest further studies are needed in some hospitals in order to generalize the results and to find how CRRT treatment affects patient’s survival and death rate.