급성 신우신염 환아들의 나이에 따른 Dimercaptosuccinic Acid Renal Scan 민감도

장경아,양정아,하태선,박혜원,이준호,Jang Kyung-Ah,Yang Jeong-A,Hah Tae-Sun,Park Hye-Won,Lee Jun-Ho 대한소아신장학회 2003 Childhood kidney diseases Vol.7 No.1

목적 : 소아에서는 임상증상만으로 요로감염의 정확한 진단이 어려우므로 DMSA renal scan은 급성 신우신염의 조기 진단과 감별에 중요한 방법이다. 급성 신우신염 환자에서 환자 연령에 따른 DMSA renal scan의 양성률, 신장초음파의 이상여부, 방광요관역류 동반율을 비교해 보고자 하였다. 또 DMSA renal scan과 신장초음파 결과 및 DMSA renal scan과 방광요관역류와의 상관관계를 알아보았다. 방법 : 2001년 3월부터 2002년 9월까지 급성신우신염으로 진단된 67명의 환아를 대상으로 나이에 따라 2세 이하의 소아 57명을 그룹 I으로, 2세 이상의 소아 10명을 그룹 II로 나누었다. 이 환아를 대상으로 DMSA renal scan, VCUG, 신장초음파의 결과를 이용한 후향적 연구를 실시하였다. 결과 : 급성 신우신염 환아에서 DMSA renal scan의 양성률은 나이에 따라서 차이가 없었다. DMSA renal scan과 방광요관역류 등급정도와는 통계학적 의미가 있었으나, 나이에 따른 방광 요관역류와는 통계학적 의미는 없었다. DMSA renal scan과 신장초음파 이상여부와는 의미가 없었다. 나이에 따른 신장초음파 이상여부와도 통계학적 의미는 없었다. 결론 : 현재로서는 DMSA renal scan은 급성 신우신염이 의심되거나, 세균뇨가 있는 환자에게서 감별 진단시 힘들이지 않고, 비교적 경제적 부담이 적은 중요한 검사 방법이다. Purpose : Accurate diagnosis of acute pyelonephritis(APN) using clinical and laboratory parameters is often difficult in children. Clinical and experimental studies have demonstrated that renal scarring can be prevented or diminished by early diagnosis and aggressive treatment of acute pyelonephritis. dimercaptosuccinic acid(DMSA) renal scan has been reported to be useful in children for confirmation of the diagnosis of acute pyelonephritis. An analysis was undertaken to correlate the clinical and laboratory manifestations of APN With the results of the DMSA renal scan in different age groups. Methods : We determined the sensitivity of DMSA renal scan in febrile urinary tract infections(UTI) in two groups according to age : group I in less than 2 years; group II in older than 2 years. During the period March 2001 through September 2002, 67 children presented with febrile UTIs. All patients had DMSA renal scan done in the acute period, 55 had voiding cystourethrography(VCUG) and 66 had renal ultrasonogram(RUS) done. Results : There were no significant difference between the two groups in DMSA renal scan (P>0.05). But, in group I sensitivity of DMSA renal scan was 47%; in group II sensitivity of DMSA renal scan was 70%. The grade of reflux correlated with a positive DMSA renal scan. Vesicoureteral reflux did not correlate with age. RUS did not correlate with a positive DMSA renal scan in any age group. Abnormality of RUS did not correlate with age. Conclusion : At present, we believe that DMSA renal scan is the prevailing method in differention of the APN. In addition, it is not invasive and less costly. Even though there is no statistical difference in the sensitivity of DMSA renal scan between young and older children, we can observe that in the younger group, the sensitivity of DMSA renal scan seemed to be lower(47%).

만성췌장염에 의한 비장피막하혈종: 1예 보고

장경아,진욱,양달모,김형식,김학수,이훈규,양혁준,Jang, Kyung A,Jin, Wook,Yang, Dal Mo,Kim, Hyung Sik,Kim, Hak Soo,Lee, Hoon Kyu,Yang, Hyuk Jun 대한영상의학회 2001 대한영상의학회지 Vol.44 No.6

췌장과 비장은 근접한 위치로 인해 췌장염시 비장합병증이 올수 있으나, 드문 것으로 되어 있고, 췌장염에 의한 비장피막하혈종은 국내에서 아직 보고된 바 없어 저자들이 경험한 1 예를 보고하고자 한다 Since the pancreas and the spleen lie in close proximity, splenic complications during the course of pancreatitis are possible, but uncommon. No previously published report in Korean has described splenic subcapsular hematoma due to pancreatitis, and we now report one such case.

한국 선사시대 암각화를 응용한 아동용 텍스타일 디자인 연구

장경아(Kyung Ah Jang),박은경(Eun Kyung Park) 한국복식학회 2014 服飾 Vol.64 No.2

This study attempts to adapt and develop Korean prehistoric petroglyphs into textile design for children. For this purpose, literature review was conducted to understand the plasticity and symbolism expressed in Korean prehistoric petroglyphs. Also this study conducted textile design development as follows: First, the figures and faces in petroglyphs were selected because children can easily recognize them. Second, two groups of different ages (7-9 and 10-13) were allowed to freely draw the selected motifs. Third, some of the motifs created by the children were selected that show children`s individuality and also keep the features of the original motifs. The children`s motifs were developed into textile design using Texpro and Photoshop. Then digital textile print-ing and 3D mapping program were used to make pajamas (5 types), umbrellas (3 types), and simulate bedding sets (2 types) for children. This research`s results are as follows: First, petro-glyphs are symbolic language of human`s oldest art form, and related to religious and mythical belief. Korean petroglyphs have plasticity showing the development steps in technique and ex-pression, with various shapes such as animals, human figures, faces, masks and abstract figures. Third, children show their interests in various human figures and faces of the petroglyphs, and it was easy to draw those motifs in their own way. Fourth, 10 design motifs were selected from the children`s work and used to create textiles considering materials and colors for children. Total 10 items were made and presented. This study confirmed the usefulness of applying pre-historic petroglyphs to children`s textiles designs. These designs may grow as a kind of cultural product for children who know about and like petroglyphs. They can be a niche market items too, made to order for children with individuality and who favor originality.

취반미의 관능적 특성에 따른 쌀의 분류 및 쌀전분의 이화학적 특성

장경아(Kyung-Ah Jang),신명곤(Myung-Gon Shin),홍성희(Sung-Hee Hong),민봉기(Bong-Ki Min),김광옥(Kwangok Kim) 한국식품과학회 1996 한국식품과학회지 Vol.28 No.1

중학생의 부모학습관여와 진로포부관계에서 학업적 자기효능감과 학업성취의 매개효과 연구

장경아(Jang Kyung A),이지연(Lee Jee Yon),한기순(Han Ki Soon) 한국교육포럼(아시아태평양교육학회) 2011 韓國敎育論壇 Vol.10 No.1

이 연구는 부모학습관여와 학업적 자기효능감, 학업성취, 진로포부의 관계를 알아보기 위하여 중학생을 대상으로 부모학습관여와 진로포부의 관계에서 학업적 자기효능감과 학업성취의 매개효과를 검증하였다. 연구의 대상은 인천지역의 중학생 220명이었고, 자료분석을 위해 SPSS WIN 15.0 통계 프로그램을 이용하여 기초분석으로써 각 척도의 하위변인에 대한 기술통계와 척도의 신뢰도 분석을 실시하였고, 변인들 사이의 상관분석, 다중회귀분석을 실시하였다. 연구결과 첫째, 진로포부는 부모학습관여, 학업적 자기효능감, 학업성취와 정적인 상관관계가 있었다. 둘째, 부모학습관여와 진로포부 사이에서 학업적 자기효능감은 완전 매개하였고, 학업성취는 부분 매개하였다. 분석결과에 대해 선행연구와 관련하여 논의하고, 연구의 의의 및 후속연구를 위한 제언을 제시하였다. This study investigated the mediation effect of academic self-efficacy and academic achievements on the relations of parental academic involvement and career-aspiration s. The subjects were a total of 220 third grade middle school students with 80 male and 140 female students attending middle schools located in Incheon metropolitan cit y. For the data process, correlation analysis was used to examine the relation among parental academic involvement, academic self-efficacy, academic achievements and car eer-aspirations. Multiple regression analysis was implemented to assess the mediation effect of academic self-efficacy, academic achievements over career-aspirations. The res ults of the study are as follows. Firstly, career-aspirations was positively related to p arental academic involvement, academic self-efficacy and academic achievements. The Second, academic self-efficacy and academic achievements were revealed to function as a mediator in the relationship between parental academic involvement and careeraspirations in the population group. Based on these results, implications and limitatio ns of the present study were discussed.

장내 미생물 연구동향 및 향후 전망(비만을 중심으로)

장경아(Kyeong A Jang),황유진(Yu-Jin Hwang),김행란(Haeng-Ran Kim),김기옥(Ki-Ok Kim),이용주(Yong-Ju Lee),황경아(Kyung-A Hwang) 한국식품영양과학회 2021 식품산업과 영양 Vol.26 No.1

7개월간 선식만 먹인 영아에서 발생한 구루병 1례

양정아,장경아,박혜원,장욱,한만용,조영아,이은,Yang, Jeong-A,Jang, Kyung-A,Park, Hye-Won,Jang, Wook,Han, Man-Yong,Cho, Young-A,Lee, Eun 대한소아청소년과학회 2003 Clinical and Experimental Pediatrics (CEP) Vol.46 No.11

저자들은 아토피 피부염 조절을 위해 7개월간 선식만 먹고 발생한 구루병 1례를 경험하여 근래에 대두되고 있는 영양식의 실태와 문제점을 살펴보고자 문헌 고찰과 함께 보고하는 바이다. Rickets is a nutritional disorder which is caused either by deficiency of vitamin D or by a defective activation of vitamin D. In these days, even though the incidence of rickets has decreased through adequate nutritional support, we sometimes experience rickets in babies receiving a prolonged special diet as therapy for chronic diarrhea, or those subject to a in receiving the prolonged elimination of milk because of allergy. But there are no reports about rickets caused by absolute elimination of milk because of allergies in Korea. We report here a case of rickets developed after feeding on Sunsik( a mixture of several grain and fruits powder) during a seven months period in an 8-month-old male patient. This male infant manifested vomiting, poor feeding, decreased serum calcium and 25-hydroxycholecalciferol levels, and markedly increased serum alkaline phosphatase and parathyroid hormone levels. Skeletal X-rays showed cupping and fraying in distal metaphyses of radius and ulna, and generalized osteopenia. The patient improved with vitamin D and calcium therapy.

LSP를 이용한 성문 스펙트럼 기울기 추정에 관한 연구

민소연,장경아,Min, So-Yeon,Jang, Kyung-A 한국음성학회 2005 음성과학 Vol.12 No.4

The common form of pre-emphasis filter is $H(z)\;=\;1\;- az^{-1}$, where a typically lies between 0.9 and 1.0 in voiced signal. Also, this value reflects the degree of filter and equals R(1)/R(0) in Auto-correlation method. This paper proposes a new flattening algorithm to compensate the weaked high frequency components that occur by vocal cord characteristic. We used interval information of LSP to estimate formant frequency. After obtaining the value of slope and inverse slope using linear interpolation among formant frequency, flattening process is followed. Experimental results show that the proposed algorithm flattened the weaked high frequency components effectively. That is, we could improve the flattened characteristics by using interval information of LSP as flattening factor at the process that compensates weaked high frequency components.

물리 지식 기반 딥러닝 기법을 이용한 대체 모델 개선

정영준,이상익,이종혁,이드아함드파지,서병훈,김동수,서예진,최원 한국농공학회 2022 한국농공학회 학술대회초록집 Vol.2022 No.-

Surrogate modeling of physical systems can offer an advantage in terms of computational cost compared to simulations; therefore, it can help some tasks that require a lot of repetitive simulations regarding similar physical systems (e.g. design optimization, uncertainty analysis, unknown parameter estimation) Data-driven surrogate models, however, require a massive amount of labeled data, which is often very hard to obtain by simulations or in-situ experiments. They also demonstrate relatively poor performance when interpreting unseen problems during training processes (i.e. out-of-distribution). In this study, we propose an improved hybrid surrogate model by integrating the physics-informed deep learning method with the general data-driven black-box model. The proposed hybrid model, pure data-driven model, and pure physics-informed model are compared when solving various problems. The prediction accuracies and applicability of the aforementioned models are compared with varying model parameter sizes and training dataset sizes while interpreting in-distribution and out-of-distribution tasks.

불균등 간격조절과 선형 스펙트럼 쌍 분포특성을 이용한 계산량 단축 알고리즘

민소연(So Yeon MIN),장경아(Kyung A JANG),배명진(MyungJin BAE) 대한전자공학회 2002 대한전자공학회 학술대회 Vol.2002 No.11