• Proceedings of the KSRS Conference
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• 2000.04a
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• pp.91-95
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• 2000

위성영상을 이용한 해안선의 추출은 연안 지형의 변화감지의 조간대의 DEM 생성 등 지구과학적인 활용 외에도 지형도와 해도의 수정에도 활용될 수 있다. 바람이 세거나 파랑이 높을 때 돌아오는 레이다의 신호는 육지와 구별이 어렵고 또한 speckle 잡음으로 인하여 SAR를 이용한 해안선 추출은 광학자료에서 사용하는 thresholding 방법이나 간단한 edge detector 등의 방법을 적용하여 좋은 결과를 얻는데 어려움이 있다. 본 연구에서는 SAR 자료를 이용하여 빠르고 정확하게 해안선을 추출할 수 있는 ratio에 기초한 해안선 추출 방법인 MSP-PoA(Maximum Stregth Edged Pruning Ratio of Average)을 경남 낙동강 하구지역의 인공해안선에 대해 적용하여 결과를 분석하였다. 그 결과는 매우 만족할 만 하나, 육지와 해수의 점이적인 특성을 나타내는 조간대가 분포하는 전남 곰소만 지역에서는 SAR intensity의 변화가 크지 않아서 만족할 만한 결과를 얻을 수 없었다. 이러한 지역에 대해서는 SAR의 위상정보를 이용하는 interferogram의 정확도를 정량적으로 평가하는데 사용되는 coherence map을 구하여 해안선을 추출하고자 한다.

• Journal of Chest Surgery
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• v.34 no.6
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• pp.494-498
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• 2001

Primary cardiac tumors are rare, and primary malignant cardiac tumors are even rarer. Of these, angiosarcoma was uncommon, Surgical resection of the tumor was very difficult because symptoms were nonspecific and did not become present until the tumor had advanced. A 15-year-old male patient was diagnosed with primary cardiac angiosarcoma by microscopic examination under surgery and underwent resection of the tumor, which compressed and obstructed the right atrium. He was discharged from the hospital after 15 days without any problems.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.534-535
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• 2001

수서동물의 아가미 형태 및 구조적 변화에 미치는 독성물질 또는 물리적인 스트레스의 영향에 관해서는 카드abf(You et al., 1978), 니켈, 크롬, 카드뮴(Hughes., 1979), 살충제(ojha et al., 1989), pH (Munshi and Singh, 1992), 염분농도(Kim et al., 1993; Moon, 1995), formalin (Ryu et al., 1998), 철 (Kang et al., 1999)등 많은 연구가 보고되고 있다. 하지만 이러한 연구 보고에서 나타난 대부분의 구조적 변화는 비특이적인 현상이지만, 스트레스 노출 조간과 무관한 것은 아니다 (Mallatt, 1985). (중략)

• Perspectives in Nursing Science
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• v.8 no.1
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• pp.10-19
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• 2011

Purpose: This article was proposed to describe and summarize the following 1) the structural hierarchy of nursing knowledge and 2) the four different methods of concept analysis and concept development, which are used most frequently in nursing literature, and 3) to demonstrate a qualitative data synthesis of situation-specific theories in Korea in order to provide an venue for developing Korean-contextualized nursing theory. Methods: A literature review and a meta-synthesis were used. An interpretive integration method for the meta-synthesis was used to incorporate incorporating the results of ten qualitative studies in Korea. Results: The normative and extended concept of the self was one of the three foremost concepts. The experiences of being detached from a group and of being unlike others were perceived with distress to Korean participants. Lastly, as a coping method, complying with a higher flow or power was used. Conclusion: Based on the three concepts elicited in this article, a substantive theory which withholds Korean nursing concepts and essences is hoped to be developed in future.

• Journal of the Korean Society of Radiology
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• v.82 no.5
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• pp.1310-1314
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• 2021

Angiosarcoma of the breast is a rare malignant sarcoma of endovascular origin that presents with various radiological findings. We encountered a case of angiosarcoma of the breast presenting as an irregular indistinct hyperechoic mass on ultrasonography, with a large single angiosarcoma of the spleen in a previously healthy 36-year-old female. Herein, we report the imaging and pathologic findings and review the literature.

• Journal of the Korean Society of Radiology
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• v.85 no.1
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• pp.217-221
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• 2024

Retroperitoneal ectopic pregnancy is a rare form of ectopic pregnancy. Owing to its rarity and nonspecific symptoms, diagnosing retroperitoneal ectopic pregnancy at the initial presentation poses a significant challenge. Typically, the diagnosis relies on non-radiation imaging modalities, such as ultrasonography and MRI, whereas CT is infrequently used. Herein, we report a rare case of a retroperitoneal ectopic pregnancy, which was diagnosed using CT.

• Journal of Aquaculture
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• v.19 no.4
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• pp.247-253
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• 2006

This study was conducted to investigate the effects of dietary supplementation of ${\beta}-1,3$ glucan on growth and immune responses in juvenile olive flounder, Paralichthys olivaceus fed the white fish meal based diets for 6 weeks. Five experimental diets supplemented with ${\beta}-1,3$ glucan at 0, 0.01, 0.025, 0.05, 0.1 % (Control, $G_{0.01},\;G_{0.025},\;G_{0.05}\;and\;G_{0.1}$, respectively) of diet on a dry-matter basis. Five experimental diets were formulated to be isonitrogenous and isocaloric to contain 50.0% crude protein and 16.7 kJ available energy $g^{-1}$. Fish averaging $3.2{\pm}0.1\;g\;(mean{\pm}SD)$ were randomly distributed in each aquarium as triplicate groups of 15 fish. Weight gain (WG, %), specific growth rate (SGR, %), and feed efficiency (FE, %) of fish fed $G_{0.1}$ diet were found significantly higher than those of fish fed Control, $G_{0.01},\;G_{0.025}\;and\;G_{0.05}$ diets (P<0.05). However, there was no significant difference among the fish fed control, $G_{0.01},\;G_{0.025}$. Chemiluminescent responses (CL) of fish fed $G_{0.1}$ diet were significantly higher than those of fish fed the other diets. Serum lysozyme activities of fish fed $G_{0.05}$ and $G_{0.1}$ diets were higher than those of fish fed control, $G_{0.025}$ and $G_{0.05}$ diets. Fish fed $G_{0.1}$ diet showed a significantly lower cumulative mortality than did fish fed control diet throughout the challenge test (P<0.05). These results suggested that based on growth rate, feed efficiency, non-specific immunity and protection against microbial infections the optimum dietary ${\beta}-1,3$ gulcan could be greater than 0.05% but less than 1.0% in juvenile olive flounder, Paralichthys oilvaceus.

• Clinical and Experimental Pediatrics
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• v.51 no.7
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• pp.736-741
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• 2008

Purpose : The incidence of thromboembolic episodes in children with nephrotic syndrome (NS) is low; however, these episodes are often severe. Moreover, both pulmonary thromboembolism (PTE) and renal vein thrombosis (RVT) rarely show clinical symptoms. This study was performed to determine the benefits of routine screening in the detection of thrombosis in childhood NS. Methods : Among 62 children with nephrotic syndrome, a total of 54 children (43 males, 11 females) were included in this study. When the patients experienced their first NS episode, we performed renal Doppler ultrasonography in order to detect RVT. To rule out the possibility of PTE, a lung perfusion scan was performed. Computed tomographic (CT) pulmonary angiography was recommended to patients who showed possible signs of PTE. All patients were evaluated for clinical signs of thrombosis, biochemical indicators of renal disease, as well as clotting and thrombotic parameters. Results : RVT or related clinical symptoms were not observed in any children. Based on the findings of the lung perfusion scans, 15 patients (27.8%) were observed with as a high probability of PTE. We were able to perform a CT pulmonary angiography only on 12 patients, and 5 patients were diagnosed with PTE (prevalence 8.1%). The serum fibrinogen level in the group with PTE was significantly higher ($776.7{\pm}382.4mg/dL$, P<0.05) than that in the group without PTE, and other parameters were not significantly different between each group. Conclusion : Further studies are required for clarifying the role of renal Doppler ultrasonography for the detection of RVT in NS. Children with NS who developed non-specific respiratory symptoms should be evaluated for the diagnosis of PTE. In the management of NS, a lung perfusion scan should be performed at the time of the initial episode of NS regardless of the pulmonary symptoms, since patients having PTE are either often asymptomatic, or present with nonspecific symptoms.

• Tuberculosis and Respiratory Diseases
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• v.42 no.2
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• pp.165-174
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• 1995

Background: Exercise is one of the most common precipitants of acute asthma encountered in clinical practice. The development of airflow limitation that occurs several minutes after vigorous exercise, i. g. exercise-induced bronchoconstriction(EIB), has been shown to be closely correlated with the nonspecific bronchial hyperresponsiveness, which is the hallmark of bronchial asthma. All previous reports that assessed the correlation of EIB to nonspecific bronchial hyperresponsiveness have focused on airway sensitivity($PC_{20}$) to inhaled bronchoconstrictor such as methacholine or histamine. However, maximal airway narrowing(MAN), reflecting the extent to which the airways can narrow, when being exposed to high dose of inhaled stimuli, has not been studied in relation to the degree of EIB. Methods: Fifty-six children with mild asthma(41 boys and 15 girls), aged 6 to 15 years(mean${\pm}$SD, $9.9{\pm}2.5$ years) completed this study. Subjects attended the laboratory on two consecutive days. Each subject performed the high-dose methacholine inhalation test at 4 p.m. on the first day. The dose-response curves were characterized by their position($PC_{20}$) and MAN, which was defined as maximal response plateau(MRP: when two or three data points of the highest concentrations fell within a 5% response range) or the last of the data points(when a plateau could not be measured). On the next day, exercise challenge, free running outdoors for ten minutes, was performed at 9 a.m.. $FEV_1$ was measured at graduated intervals, 3 to 10 minutes apart, until 60 minutes after exercise. Response(the maximal ${\triangle}FEV_1$ from the pre-exercise value) was classified arbitrarily into three groups; no response((-) EIB: ${\triangle}FEV_1$<10%), equivocal response ($({\pm})$EIB:10%<${\triangle}FEV_1$<20%) and definite response($({\pm})$EIB:${\triangle}FEV_1$>20%). Results: 1) When geometric mean $PC_{20}$ of the three groups were compared, $PC_{20}$ of (+) EIB group was significantly lower than that of (-)EIB group. 2) There was a close correlation between $PC_{20}$ and the severity of EIB in the whole group(r=-0.568, p<0.01). 3) Of the total 56 subjects, MRP could be measured in 36 subjects, and the MRP of these subjects correlated fairly with the severity of EIB(r=0.355, p<0.05) 4) The MAN of (+) EIB group was significantly higher than that of (-)EIB group(p<0.01). 5) The MAN correlated well with the severity of EIB in the whole group(r=0.546, p<0.01). Conclusion: The degree of MAN as well as bronchial sensitivity($PC_{20}$) to methacholine is correlated well with the severity of EIB. The results suggest that the two main components of airway hyperresponsiveness may be equally important determinants of exercise reactivity, although the mechanism may be different from each other. The present study also provides further evidence that EIB is a manifestation of the increased airway reactivity characteristic of bronchial asthma.

• Journal of Oral Medicine and Pain
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• v.35 no.2
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• pp.123-133
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• 2010

The purpose of this study is to investigate Tension-type headache associated with pericranial tenderness and Headache attributed to temporomandibular joint disorder among Characteristic pain index, Disability points, Chronic pain grade, Depression index, Nonspecific physical symptoms (pain items included), Nonspecific physical symptoms (pain items excluded), Jaw disability score using RDC/TMD Axis II. Eighty five patients who visited the Kyung Hee University Dental Hospital were diagnosed as Tension-type headache associated with pericranial tenderness(n=48) and Headache attributed to temporomandibular joint disorder(n=37) by the International Classification of Headache Disorders, 2nd Edition, and were administered the Korean versions of the RDC/TMD Axis II- Characteristic pain index, Disability points, Chronic pain grade, Depression index, Nonspecific physical symptoms (pain items included), Nonspecific physical symptoms (pain items excluded), Jaw disability score. Then it was analyzed statistically by SPSS(ver. 10.0). T-test, The Wilcoxon-signed rank test and Mann-Whitney U test (p<0.05) were used. There were no significant differences in Characteristic pain index, Disability points, Chronic pain grade, Depression index, Nonspecific physical symptoms (pain items included), Nonspecific physical symptoms (pain items excluded), Jaw disability score between two groups. Tension type headache associated with pericranial tenderness and Headache attributed to temporomandibular joint disorder showed similar Axis II feature. Tension-type headache associated with pericranial tenderness may be related to Headache attributed to temporomandibular joint disorder.