• 한국해양공학회지
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• 제37권5호
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• pp.181-189
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• 2023

The fuel consumption of marine diesel engines holds paramount importance in contemporary maritime transportation and shapes energy efficiency strategies of ocean-going vessels. Nonetheless, a noticeable gap in knowledge prevails concerning the influence of ship hull conditions and propeller roughness on fuel consumption. This study bridges this gap by utilizing artificial intelligence techniques in Matlab, particularly convolutional neural networks (CNNs) to comprehensively investigate these factors. We propose a time-series prediction model that was built on numerical simulations and aimed at forecasting ship hull and propeller conditions. The model's accuracy was validated through a meticulous comparison of predictions with actual ship-hull and propeller conditions. Furthermore, we executed a comparative analysis juxtaposing predictive outcomes with navigational environmental factors encompassing wind speed, wave height, and ship loading conditions by the fuzzy clustering method. This research's significance lies in its pivotal role as a foundation for fostering a more intricate understanding of energy consumption within the realm of maritime transport.

• Asian Pacific Journal of Cancer Prevention
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• 제14권6호
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• pp.3677-3680
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• 2013

We aimed to assess the role of XPG, XPC and MMS19L polymorphisms on response to chemotherapy in osteosarcomas, and the clinical outcomes. One hundred and eighty five osteosarcoma patients who were histologically confirmed were enrolled in our study between January 2007 and December 2009. Genotyping of XPG, XPC and MMS19L was performed in a 384-well plate format on the MassARRAY$^{(R)}$ platform. Individuals with XPG TT genotype and T allele were more likely to be better response to chemotherapy than CC genotype, with the OR (95% CI) of 4.17 (1.64-11.54) and 2.66 (1.39-5.11), respectively. Those carrying MMS19L TT genotype and T allele showed better response to chemotherapy, with ORs (95% CI) of 4.8 (1.56-17.7) and 2.3 (1.22-4.36), respectively. Patients carrying TT genotype of XPG and MMS19L showed a significantly longer overall survival than CC genotype, with a 0.47 and 0.30-fold risk of death when compared with the wild-type of the gene. XPG and MMS19L are correlated with response to chemotherapy and prognosis of osteosarcoma, so that they could be used as predictive markers for prognosis.

• 성인간호학회지
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• 제14권1호
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• pp.73-82
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• 2002

The purpose of this study was to test the fitness and explainable power of TPB-SE model to the behavior of breast self examination and it was to examine effectiveness of education for Intention and behavior of breast self examination. The subjects were 122 womens under baby sitting teachers' training programs at "S"college on Po Hang city, Kyung Pook province from May 10, 1998 through October 17, 1998. Among 122 subjects, 61 were placed in experimental group and 61 in control group. The experimental group was treated by researcher who administered booklet, slide and breast model. Collected data were analyzed through $X^2$-test, t-test, MANOVA, ANCOVA, Pearson correlation coefficient via SPSS/PC and applied LISREL 8.0 programs to test TPB-SE model. The result of this study was summarized as follows: 1. TPB-SE model with additions of self efficacy from TPB fits well for predictive factors of behavior of breast self examination and it also fits well for data (GFI=.91, $R^2$=.45). 2. Behavior score of breast self examination in the experimental group with already educated with breast self examination was significantly higher than that of control group (Wilks's value=.711, p=000). Through the results of this study, TPB-SE model with additions of self efficacy from TPB fits well for predictive factors of behavior of breast self examination and the education of breast self examination was effective to improving intention and behavior of breast self examination. I herewith reached final conclusions that the behavior of breast self examination should be regarded as one of health behavior for all women and the health education to women for breast self examination will be important job role for all nurses. In addition to above, the intervention through effective education designed for improving attitude, subjective norm, perceived control, self efficacy and intentions will be necessary step for any improvement of women' health behavior.

• Asian Pacific Journal of Cancer Prevention
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• 제13권6호
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• pp.2583-2586
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• 2012

Aim: There is increasing evidence that ERCC1 and XPD have roles in response to chemotherapy among patients with NSCLC, but the results are conflicting. Therefore, we conducted the present prospective study in a Chinese population. Methods: A total of 632 primary NSCLC patients were included, followed-up from May 2006 to May 2011. Polymorphisms were detected by real time PCR with TaqMan probse, using genomic DNA extracted from peripheral blood samples. The Cox regression model was used to analyze the hazard ratios (HR) for ERCC1 and XPD. Results: The median time of follow-up was 31.6 months. Our results showed the ERCC1 118 T/T(HR=1.65, 95% CI=1.17-2.43) and XPD 751 Gln/Gln genotypes (HR=1.52, 95%CI=1.04-2.08) were associated with an increased risk of death from NSCLC. Moreover, the ERCC118 T allele and XPD 751 Gln allele genotypes had a more higher risk of death from NSCLC among both ex-smokers and current smokers. Conclusion: In summary, ERCC1 and XPD gene polymorphisms might provide better prognostic predictive information for NSCLC patients in Chinese populations, with smoking possibly interacting with the genotypes.

• 대한간호학회지
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• 제48권3호
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• pp.289-297
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• 2018

Purpose: This study aimed to evaluate the usefulness of a behavioral cue checklist (BCC) containing 17 items developed by Wilkes et al. (2010) for identifying potentially violent patients in emergency departments. Methods: This was a prospective observational study to evaluate the usefulness of the Korean version of a BCC (K-BCC) as an assessment tool for predicting patient violence in emergency departments, and was conducted over 4 weeks in a regional emergency medical center located in B City. A total of 1,324 patients were finally analyzed. Results: Logistic regression analysis was performed to investigate whether each item of the K-BCC predicts violence, and a parsimonious set of 8 statistically significant items was selected for the tool. Receiver operating characteristic analysis of the BCC showed that the area under the curve was .97 (95% confidence interval: .94~1.0). The sensitivity, specificity, positive predictive value, and negative predictive value at the cut-off score of 2 were 75.6%, 98.9%, 68.2%, and 99.2%, respectively. Conclusion: The K-BCC was found to be useful in predicting patient violence toward emergency department staff. This tool is simple, and fast to use and can play a significantly role identifying potentially violent patients. Owing to this advance identification, this tool can be helpful in preventing the potential for violence from manifesting as violent behaviors.

• Asian Pacific Journal of Cancer Prevention
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• 제16권12호
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• pp.5085-5088
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• 2015

Background: The aim of this study was to assess the role of the presence of a choline peak in 3 Tesla 1H magnetic resonance spectroscopy (MRS) for differentiating benign from malignant adnexal masses. Materials and Methods: A total of 46 adnexal masses (23 malignant and 23 benign) underwent 1H MRS study prior to surgery to assess the presence of choline peak. Results: A choline peak was detected in 16 malignant masses (69.5%) and was absent in the other 7 (30.5%). A choline peak was only detected in 6 (26%) of the benign adnexal masses. The presence of an MRS choline peak had a sensitivity of 69.5%, a specificity of 74%, a positive predictive value (PPV) of 72.7%, and a negative predictive value (NPV) of 71% for diagnosing malignant adnexal masses. A significant difference between the frequency of mean choline peaks in benign and malignant adnexal masses was observed (P value < 0.01). Conclusions: A 1H MRS choline peak is seen in malignant adnexal masses more frequently than the benign masses, and may be helpful for diagnosing malignant adnexal masses.

• Asian Pacific Journal of Cancer Prevention
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• 제13권7호
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• pp.3031-3035
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• 2012

Background: Though open surgical biopsy is the procedure of choice for the diagnosis of bone tumors, many disadvantages are associated with this approach. The present study was undertaken to evaluate the role of fine needle aspiration cytology (FNAC) as a diagnostic tool in cases of bony tumors and tumor-like lesions which may be conducted in centers where facilities for surgical biopsies are inadequate. Methods: The study population consisted of 51 cases presenting with a skeletal mass. After clinical evaluation, radiological correlation was done to assess the nature and extent of each lesion. Fine needle aspiration was performed aseptically and smears were prepared. Patients subsequently underwent open surgical biopsy and tissue samples were obtained for histopathological examination. Standard statistical methods were applied for analysis of data. Results: Adequate material was not obtained even after repeated aspiration in seven cases, six of which were benign. Among the remaining 44 cases, diagnosis of malignancy was correctly provided in 28 (93.3%) out of 30 cases and categorical diagnosis in 20 (66.67%). Interpretation of cytology was more difficult in cases of benign and tumor-like lesions, with a categorical opinion only possible in seven (50%) cases. Statistical analysis showed FNAC with malignant tumors to have high sensitivity (93.3%), specificity (92.9%) and positive predictive value of 96.6%, whereas the negative predictive value was 86.7%. Conclusion: FNAC should be included in the diagnostic workup of a skeletal tumor because of its simplicity and reliability. However, a definitive pathologic diagnosis heavily depends on compatible clinical and radiologic features which can only be accomplished by teamwork. The cytological technique applied in this study could detect many bone tumors and tumor-like conditions and appears particularly suitable as a diagnostic technique for rural regions of India as other developing countries.

• Journal of Yeungnam Medical Science
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• 제32권2호
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• pp.85-89
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• 2015

Background: We examined the usefulness of urine osmolality, as a predictive factor in the treatment of monosymptomatic nocturnal enuresis (NE) with combination therapy of imipramine and desmopressin. Methods: From May 2014 to April 2015, 59 monosymptomatic NE patients participated in this study. Early morning urine osmolality was measured at 1 week and 1 day before combination therapy of imipramine and desmopressin, and at 1 week and 2 weeks after therapy. The response to combination therapy was evaluated at 3 months after treatment. The mean period of combination therapy was $6.4{\pm}4.2weeks$. Therapeutic response was classified as complete (0-1 wet night/week), partial (over 50% reduction of night) and non-responders (less than 50% reduction of night). Results: The cumulative rate of the complete and partial responders was 76.3%. Among the 3 groups, the statistically lowest value of pre-treatment urine osmolality was observed in the complete responder group (p<0.001). Urine osmolality increased in all groups after treatment, however, statistically the greatest difference between pre and post-treatment urine osmolality was observed in the complete responder group (p=0.024). No serious side effects were observed. Conclusion: Early morning urine osmolality and change of urine osmolality between pre and post-treatment have predictive values in the response to combined imipramine and desmopressin for treatment of monosymptomatic NE.

• Journal of Yeungnam Medical Science
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• 제24권2호
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• pp.179-185
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• 2007

결론적으로 출력 도플러 신초음파는 급성신우신염의 병변을 찾는데에 특이도나 민감도가 그리 높지 않았으나 하부요로감염과 급성신우신염을 감별하는데에 어느 정도 유용하였으며, 특히 DMSA 스캔을 같이 실시하는 경우에는 신손상을 찾는데 더 도움이 될 수 있었다. 소아들의 상부요로감염의 진단을 위하여 출력 도플러 신초음파가 DMSA 스캔을 대체하는 영상검사로서는 한계가 있어 향후 보다 많은 시술로 진단을 위한 검사의 질을 높이는 방법을 찾아보아야 할 것이다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2177-2183
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• 2016

Background: To evaluate the predictive role of a risk of malignancy index in discriminating between benign and malignant adnexal masses preoperatively. Materials and Methods: A total of 408 patients with adnexal masses managed surgically between January 2010 and February 2014 were included. The risk of malignancy indices (RMI) 1, 2, 3 and 4 were calculated using findings for ultrasonography, menopausal status, and CA125 levels. Histopathologic results were the end point. ROC analysis was used for the sensitivity and the specificity of the models. Results: Some 37.6 % of the cases were malignant in the postmenopausal group while 7.9 % were malignant in the premenopausal group. Pelvic pain was the most common complaint, and the majority of the cases were diagnosed at stage 3. The RMI 1, 2, 3 and 4 yielded percentage sensitivities of 76.1, 79.1, 76.1 and 76.1 and specificities of 91.5, 89.1, 90.6, 88.6, respectively. RMI 1 was the most reliable test in the general population according to AUC levels and Kappa statistics. From ROC analysis results of post/premenopausal women, the RMI 1 (cut off: 200) yielded sensitivities of 84.0/60.9 and specificities of 87.7/92.5. With RMI 2 they were 88.6/60.9 and 80.0/91.0, with RMI 3 84.0/60.9 and 87.7/91.8, and with RMI 4 (cut off:400) 81.8/47.8 and 83.6 /44.0. Although test performance of RMI methods were good in a general population and postmenopausal women, the RMI inter-agreement validity was only moderate or fair in premenopausal women. Conclusions: Our study confirms the effectiveness of RMI algorithms in postmenopausal women. However, more sensitive tests are needed for premenopausal women.