• Journal of Hospice and Palliative Care
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• v.17 no.1
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• pp.18-26
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• 2014

Purpose: Anorexia is a common symptom in terminal cancer patients. Some data have suggested a role of visfatin in regulating feeding behavior. We studied the relationship of a serum visfatin level and anorexia in cancer patients provided with hospice care. Methods: After informed consent was obtained, 69 cancer patients over 20 years old at a hospice center were enrolled in the study from July 2009 to July 2010. We characterized patients by age, sex, body mass index, primary cancer site, and Eastern Cooperative Oncology Group (ECOG) performance status, etc. Also, blood tests were performed to measure the level of hemoglobin, white blood cell (WBC), C-reactive protein (CRP), total cholesterol, albumin, lymphocyte count, glucose, blood urea nitrogen (BUN), creatinine, tumor necrosis factor-alpha (TNF-${\alpha}$), interukin-6, leptin and visfatin. Results: The mean age of subjects was 65.5 years old, According to univariate analysis, pulse, ECOG performance scale, opioid use and visfatin level were different between the anorexia and non-anorexic group (P<0.05). The median visfatin level was higher in the anorexia group than the good appetite group (P=0.0323). Serum visfatin concentrations were not related with either body mass index or serum leptin or total cholesterol levels, but it was negatively correlated with serum albumin levels (P=0.0198) and lymphocyte counts (P=0.0013). Conclusion: This study did not identify a novel link between visfatin levels and anorexia in cancer patients at a hospice.

• Journal of the Korean School Mathematics Society
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• v.22 no.1
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• pp.1-21
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• 2019

Mathematics is one of the subjects in which learners seriously experience under-achievements in school education. Middle school level mathematics especially plays such a role as a bridge between elementary level informal mathematics and high school level formal mathematics that learners' under-achievements in the middle school level mathematics may yield more serious under-achievements later. Therefore it is crucial to prevent learners' later under-achievements that we analyze the status of under achievements including analysing various under-achievers' errors in the middle school level mathematics. From this point of view, we analysed errors of mathematics under-achievers in understanding the concept of the square root of positive numbers and related calculations in this paper. As the results of our research, we found some unexpected errors of 'some mathematics under-achievers regarding the mathematical symbol ${\surd}$ of square root as a parenthesis ( ), and others interpret $x=-2{\pm}{\sqrt{10}}$ as x=-2 or ${\pm}{\sqrt{10}}$.' that suggest the necessity of more various and in-depth discussions and researches of analysis on learners' errors and misconceptions in all areas of school mathematics.

• Journal of Science Education
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• v.47 no.1
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• pp.11-23
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• 2023

In this study, we examined the effect of socioscientific issue (SSI) based science lessons on underachieving 9th-grade students. A total of seven lessons centered on two SSIs related to the national science curriculum were developed and implemented during the first semester of 2021. Data were collected from 185 9th-grade students in one middle school in a mid-sized city of South Korea. Among them, 37 were identified as achieving far below the standards (underachieving students hereafter). Quantitative data were collected from pre- and post-tests on basic science content and attitudes and competency measures. To supplement quantitative data, lesson observation notes were recorded, and student interviews with a selected number of students were conducted. The analysis of quantitative data was conducted through the Wilcoxon Signed Rank Test and paired t-tests. Qualitative data were analyzed to find reasons for changing attitudes. The findings showed that the SSI-based lessons were more effective on underachieving students than the others in enhancing basic academic achievement, while there was no significant effect on all in attitudes and competency. Lesson observation data showed that underachieving students were more engaged in SSI-based lessons than before. Student interviews demonstrated several reasons why they were engaged, suggesting the aspects of SSI-based lessons that facilitated underachieving students' learning. Further research topics are suggested.

• Clinical and Experimental Pediatrics
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• v.51 no.2
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• pp.209-213
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• 2008

In young adolescent girls, anorexia nervosa is a significant cause of weight loss, and hospital admissions among children and adolescents. Anorexia nervosa is a life-threatening disorder, with about one-third of deaths caused by cardiac complications. A high rate of pericardial effusion has been recently reported in patients with anorexia nervosa, although relatively few cases require pericardiocentesis. Here, we describe three patients with anorexia nervosa who were diagnosed with large pericardial effusions. To prevent cardiac tamponade, pericardiocentesis was performed in two girls.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.124-126
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• 2016

해안역에서의 대규모 개발은 파랑에너지의 전파에 상당한 변화를 초래한다. 특히, 항만내로 전파되는 파랑장을 변화시켜 기존의 에너지 전달체계에 큰 영향을 야기한다. 따라서, 이러한 파랑에너지의 변화를 사전에 예측하여 항만내의 선박이나 항만구조물의 피해를 막을 수 있다. 그러나 일반적으로 수행되는 항만내의 파랑장 검토 즉, 정온도 검토는 주로 공학적으로 문제가 되는 주기 10~20sec의 풍파와 너울성 파랑에 대하여 수행되고 있다. 그러나 실제 현장에서는 20sec 이상의 장주기 파랑에 의한 선박이나 항만구조물에 상당한 피해를 가져오기도 하지만 이로 인해 연간 부두 접안율이 낮아 항만운영에 어려움을 겪고 있다. 본 실험은 대규모 개발에 따른 장주기 파랑에 의한 반응특성과 부진동의 영향을 검토하였다. 특히, 항내 수제선에 개발이 집중적으로 이루어져 내륙측으로 항만수역을 보완하거나 변경이 어려운 경우 장주기파로 인한 부진동의 영향을 저감하기 위한 시도로 공진수역을 도입하였으며, 이에 대한 반응 특성을 분석하여 장래 항만 재배치 계획에 반영할 수 있는 근거가 될 수 있을 것으로 본다.

• Journal of Korea Game Society
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• v.8 no.2
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• pp.37-46
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• 2008

Underachievers, having had more experience with failure in teaming, tend to lose their self-confidence and motivation for study. If they achieve more when studying, they will enhance their self-confidence and motivation and their learning accomplishments will be increased. A game-style learning system was, therefore, developed in which the learner gains self-satisfaction and motivation with a proper 'hit and win' in a game-style program. The system supplies learning content automatically and randomly while adapting to the student's level by continuously checking the learning progress. Positive effects in motivation and learning achievement were recorded when underachievers used this program.

• Journal of Elementary Mathematics Education in Korea
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• v.14 no.3
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• pp.615-631
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• 2010

Exercise is still an important method for mathematics learning and teaching, but there is only a few researches which involve the effectiveness of exercise in mathematics learning. This study is designed for giving some implications to researchers who are interested in developing mathematics exercise books for low achievers with respect to effectiveness. For this, 'Suhak-Ikhimchaek', the Korean elementary mathematics workbook, is chosen and in particular, 'multiplication number fact', one of the units of the book, is analyzed with the following respects: achievement levels of learners, arrays of exercise, the amounts and period of exercise, exercise type. Finally, this study proposes composing principles for developing exercise books for low achievers in mathematics.

• School Mathematics
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• v.12 no.4
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• pp.531-545
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• 2010

This research is focusing on find out the learning method for mathematics underachievers of middle school. The tested method were metacognitive activity through writing. For conducting research, I had selected mathematics underachievers of middle school. After selecting them, I made two group. One group studied using CAS calculator with paper and pencil. And another group studied using paper and pencil only. Both groups exhibited metacognitive learning activities. The analysis of result shows that the group with CAS calculator did better than the group of paper and pencil.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.24 no.3
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• pp.181-198
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• 2013

This study takes aim at finding how effective the usage of 'Read to Dogs' is for self-respect and reading improvement of elementary school students. For this, this study was compared and analyzed with pretest and posttest using 'tree pictures' of HTP and 'family pictures with motion' of KFD through performing, surveying, and art-therapy treatments. The result of this study showed that reading program using a reading -assistance- dog has a good effect on self-respect of children with reading inactivity. Also, this result will be used as useful information in developing and operating programs for children with reading inactivity in libraries and schools.

• 한국해양학회지
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• v.11 no.2
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• pp.51-56
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• 1976

A statistcal investigation was made on the seiches at Pohang harbor, east of Korea, based on the data of observations for the year 1973 and 1974. Pohang harbor has a most remarkable seiches comparing to the major harbors in Korea. The frequently observed conspicuos seiches at the harbor have a period of 20 to 24 minutes mostly and 60 to 84 minutes in the next place. Maximum height of seiches were 50cm in 1973 and 60cm in 1974, respectively, which were occured at the expansions of cold-dry continental high pressure and on the following day of passages of lowest pressurs. Minus tides at Pohang were occured more frequently than that of seiches and the minus tides falled more greatly at the time of seiches.