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The Analysis of the 6th Grade Students' Mathematical Thinking on the Application of Lakatos' Methodology (Lakatos 방법론을 통한 초등학교 6학년 학생들의 수학적 사고)

  • Jung, Mi Hye;Lee, Kwangho;Sim, Jaebang
    • Education of Primary School Mathematics
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    • v.16 no.1
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    • pp.21-33
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    • 2013
  • In this study, We analyzed the mathematical thinking of sixth grade students showed mathematics lessons through the application of Lakatos' methodology and search for the role of their teachers in this lessons. We supposed to find the solution to the way of teaching-learning regarding the Lakatos' methodology for the elementary school level. According to the stages of presenting a problem situation, suggesting an initial conjecture, examining the conjecture, and improving the conjecture, we had lessons 8 times that are applied to Lakato's methodology. We gathered and analyzed data from lessons and interviews recording videotapes, documents for this study. The participants showed a lot of mathematical thinking. They understood the problem situation with the skill of fundamental thinking and suggested the initial conjecture by the skill of developmental thinking and they found a counter-example to be able to rebut the initial conjecture by critical thinking. Correcting the conjecture not to have counter-example, they drew developmental thinking and made their thinking generalize.

Amblyomma testudinarium Koch, 1844: Discovery and Record in Korea, and Identification and Redescription of Male Tick (Amblyomma testudinarium 진드기의 국내발견기록(國內發見記錄), 종속동정(種屬同定) 및 웅충(雄蟲)에 대한 형태학적(形態學的) 재기술(再記述))

  • Kang, Yung-Bai;Suh, Myung-Deuk;Kim, Yong-Hee;Byun, Si-Yul;Lim, Hi-Ung
    • Korean Journal of Veterinary Research
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    • v.21 no.2
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    • pp.65-72
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    • 1981
  • Amblyomma testudinarium Koch', 1844, previousely known to occur in India, Sri Lanka, Burma, Thailand, Malaysia, Indonesia, Indochina, the Philipines, Taiwan and Japan, is here firstly discovered and recorded in Korea. A male specimen was collected from grazing Frisian cattle of the Dae Weon Farm on Jeju Island by a local veterinary official on the 28th June in 1981. The specimen was examined at the institute of Veterinary Research in Anyang and was identified as A. testudinarium. The morphological characteristics of the male specimen were redescribed. A tota1 of 18 species of ticks belonging to 7 genera, such as, Argas, Amblyomma, Boophilus, Dermaccntor, Haemaphysalis, Hyalomma and Ixodes, has now been recorded to occur in Korea.

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A clinical study of congenital chylothorax and octreotide therapy (선천성 유미흉의 임상적 고찰과 옥트레오타이드 치료)

  • Oh, Ung Geon;Choi, Kyoung Eun;Kim, Kyung Ah;Ko, Sun Young;Lee, Yeon Kyung;Sin, Son Moon
    • Clinical and Experimental Pediatrics
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    • v.51 no.11
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    • pp.1172-1178
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    • 2008
  • Purpose : Congenital chylothorax is an accumulation of lymphatic fluid within the pleural space. It is a common cause of unidentified hydrops fetalis. We examined the perinatal history, clinical manifestation, diagnosis, treatment, and outcome in 6 newborns diagnosed to have congenital chylothorax with hydrops fetalis. We also studied the effect of octreotide therapy for congenital chylothorax in relation to conservative treatment. Methods : We retrospectively reviewed the medical records of 6 patients diagnosed to have congenital chylothorax with hydrops fetalis among 27,907 newborns who were born at the Cheil General Hospital and Womens Healthcare Center between January 2004 and July 2007. The diagnosis of chylothorax is based on the analysis of pleural fluid before and after milk feeding. Results : Incidence of congenital chylothorax in this study was 0.021%. All 6 cases were noted in over the 92% lymphocyte in pleural analysis. Transudate was changed into chyle with increasing triglyceride levels above 200 mg/dL after milk feeding. Three of 6 infants improved with conservative treatment, including thoracostomy and assisted ventilation. The others had persistent symptoms despite conservative treatment and responded to octreotide therapy. A complication, specifically vomiting was noted in 1 case during octreotide therapy. Conclusion : In this study, octreotide therapy resulted in a safe and excellent outcome. Therefore, octreotide therapy is considered in severe refractory congenital chylothorax in conservative treatment. Further studies are required to determine appropriate guidelines for octreotide therapy.

The Application of HACCP System to Soybean Curd and Its Effectiveness (두부류에 대한 HACCP 적용 및 성과)

  • Park, Wan-Hee;Lee, Sung-Hak
    • Journal of Food Hygiene and Safety
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    • v.18 no.4
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    • pp.202-210
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    • 2003
  • This study aims at making a HACCP(Hazard Analysis Critical Control Point)plan to be applied to soybean curd and verifing its effectiveness. First, we develped a general model of HACCP according to the guidelines of Codex (FAO/WHO). And we applied the model to 4 soybean curd workshops for 3 months. The HACCP model is composed of these procedures; HACCP team organization, production description, work flow chart, hazatd analysis, CCP (critical control point) decision, CL (critical limit) establishment, monitoring method decision, correction, verification and documentation. CCP were selection procedure and refrigeration procedure in non-wrapped soybean curd. CCP were selection procedure, heat-sterilizing and refrigeration in wrapped soybean curd. The result of bacterial experiment after apling the model for 3 months, the bacterial numbers of soybean curd box, wrapper, and soybean curd production were lower after appling than before appling, the model. We could verify that the appications of the HACCP model were effective to the soybean curd workshops.

Clinical Features of Kawasaki Disease with Pyuria (농뇨 동반 가와사키병의 임상적 특징)

  • Kim, Hyo-Jin;Lee, Joo-Young;Choi, Ui-Yoon;Lee, Soo-Young
    • Pediatric Infection and Vaccine
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    • v.24 no.3
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    • pp.141-145
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    • 2017
  • Purpose: Clinical and laboratory features of two Kawasaki disease (KD) groups were evaluated; the patient with pyuria and those without pyuria. Methods: From January 2015 to December 2016, the medical records of 140 (86 males and 54 females) inpatients with KD were retro-spectively analyzed. Results: Forty-eight KD patients (34.3%) presented with pyuria. KD patients with pyuria showed a higher level of C-reactive protein (CRP) and a higher proportion of elevated liver enzymes than those without pyuria. There were no differences in the proportions of unresponsiveness to intravenous immunoglobulin and coronary artery lesions between the two groups. Six KD patients (12.5%) with pyuria underwent a renal imaging study to rule out the possibility of a urinary tract infections. Thirty-two KD patients (66.7%) with pyuria received treatment with antibiotics in addition to the standard treatment for KD. Conclusions: KD patients with pyuria showed a higher level of CRP and elevated levels of liver enzymes than those without pyuria. These findings suggest that KD patients with pyuria have more severe systemic inflammation than those without pyuria.

참깨의 수세 후 탈수 정도에 따른 참깨 볶음 조건과 참기름 품질 영향 비교

  • 모승영;이우진;은종방
    • Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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    • 2003.10a
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    • pp.153-153
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    • 2003
  • 우리나라와 일본에서 특유의 향미로 인해 오래 전부턴 조미식품으로 애용되었던 참기름은 최근 토코페롤과 세사몰류 항산화 성분의 인체 기능성으로 인해 유지시장에 서 더욱 증가일로에 있다. 지금까지 좋은 향미와 품질을 지닌 참기름을 얻기 위해 참깨의 roasting조건에 대한 많은 연구가 이루어져 왔으나, 가공 전처리인 이물질 제거를 위한 수세 작업 및 탈수 작업에 관한 연구는 아직까지 없었다. 따라서, 본 연구에서는 이물질을 제거하는 수세 작업을 한 후 수분의 제거 정도 즉, 참깨가 roasting 과정으로 들어가기 직전의 수분 함량이 참기름의 제조와 품질에 미치는 영향을 알아보고자 하였다. 시료 350g을 수세 후 24 hr, 48 hr, 120 hr 실온에서 송풍 건조를 시켜 참깨 자체의 수분 함량을 각각 17.14%, 11.78%, 6.08%로 조절하여 착유하였다. 수분함량이 다른 세 군 시료를 각기 24$0^{\circ}C$, 26$0^{\circ}C$, 28$0^{\circ}C$에서 20분간 roasting하여 착유된 참기름에 대해 이화학적 품질 특성을 알기 위해 seed와 oil의 색도, 산가, 과산화물가, TBA가, 점도와 굴절률을 측정하였다. 또한, sample single test(5점 척도)를 이용한 관능검사를 행하여 benny, nutty, burnt flavor 및 전체적 만족도와 향의 강도 항목을 조사한 후 상관분석을 실시하였다. roasted sesame seed와 oil에 대해 색도를 측정하고 분산 분석을 실시한 결과, 참깨의 색도 중 L*가 R-suare=1로서 전체 자료가 모형을 잘 설명해줌을 의미하는데, 고수분 시료일수록 whiteness가 높게 나왔고(60이상), 고온일수록 미미한 감소가 나타났다. 이것은 수분함량이 시료의 건화속도에 요인자로 작용함을 말해준다. oil의 L*도 마찬가지 경향을 보이나 고수분 시료구의 경우(40 이상), 타 시료구(20이하)에 비해 백색도가 높은 것을 볼 수 있어 볶음에 더 많은 시간을 투자해야 함을 보여주었다. 그러나 a*와b*는 시료구간 뚜렷한 차이는 보이지 않았다. 참기름에 대하여 화학적 품질 평가로 산가는 수분함량 시료구별로 1.204, 3.28, 1.862가 측정되었고, 과산화물가는 0.493, 0.169, 0.315가 기록되었고, TBA가 또한 13.45, 10.27, 11.73로서 시료의 수분 함량과 상관없이 초기 산패 경향은 거의 없는 것으로 나타났다. 참기름의 물리적 품질요소로서 점도는 평균 85.57 cS, 굴절률은 평균 1.471로서 시험구간 이화학적 차이는 없는 것으로 드러났다. 관능검사결과의 상관분석에서는 beany와 burnt flavor간에 -0.9975(p<0.05)의 음상관을, nutty flavor와 전체favor간에 0.99662의 양상관(p$\leq$0.05)을 보였고, burnt와 향의 strength, 전체 favor와 nutty flavor간에도 상관성이 높았다. strength와 nutty 항목간에도 0.982의 높은 상관을 보였으나 전체 favor와 burnt 항목간에는 높은 음상관(-0.9862)을 보였다. 고수분 함량의 시료는 28$0^{\circ}C$의 고온 처리시 외에는 향미가 좋지 못한 것으로 나타났고, 수분량이 적은 실험구는 고온일수록 향과 고소함은 강해지나 수분 보유량이 적어 타 실험구에 비해 탄내가 많이 발생하였다. 향미 만족도는 중간 수분량, 26$0^{\circ}C$ 볶음 처리구가 가장 컸다. 결론적으로 수분함량을 10~12%로 조절한 시료로 26$0^{\circ}C$~28$0^{\circ}C$에서 20분 이내로 roasting할 때가 좋은 참기름을 얻을 수 있을 것으로 사료된다.

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Comparative Study of Conventional Phlebectomy and Transiliuminated Powered Phlebectomy in Varicose Veins (하지 정맥류의 고식적 수술 방법과 광투시 전동형 정맥제거술의 비교연구)

  • Lee Choong Won;Chung sung Woon
    • Journal of Chest Surgery
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    • v.38 no.6 s.251
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    • pp.415-420
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    • 2005
  • Recently the cases of varicose veins are increasing because the patients with latent disease have come to realize that they want a positive treatment. Accordingly, the purpose of this study is to compare and analyze two methods the conventional phlebectomy (CP) and transiliuminated powered phlebectomy (TIPP). Material and Method: From March 200f to December 2004, 114 patients (167 legs) with varicose vein were operated in Pusan National University Hospital. A retrospective review was performed on the clinical records. We analyzed age, sex, duration of illness, chief complaints, duplex doppler findings, number of skin incisions, operative time, length of hospitalization, complications, and remnant lesions. Result: Operative time was significantly shorter in the TIPP group than CP group (for one leg $108.4\pm27.6\;min\;vs\;83_4\pm24.4\;min,\;for\;both\;legs\;184.7\pm28.4\;min\;vs\; 137.8\pm24.4\;min)$. There was signifcant statistical difference in average number of skin incisions per leg between the CP group and the TIPP group $(5.9\pm2.2\;vs\;4.2\pm1.6)$. Mean duration of hospitalization was Significantly shorter in the TIPP group than CP group $(4.4\pm1.0\;days\;vs\;5.8\pm1.9\;days)$. Complications were pain $(15.9\%)$, remnant lesion $(9.5\%)$, and ecchymosis $(4.8\%)$ in the CP group and ecchymosis $(19.6\%),\;pain\;(7.8\%),\;and\;remnant\;lesion\;(7.8\%)$ in TIPP group. Sclerotherapy or reopertaion was done for the patients who had remnant lesions. Conclusion: Transilluminated powered phlebectomy in varicose vein could reduce operative time and number of skin incisions, and almost completely removed the multiple lesions. Although there were postoperative complications such as ecclymosis, they were absorbed within 2 months and patients were satisfied. Therefore, TIPP is a more effective operative technique than conventional phlebectomy in varicose veins.

The Precise Three Dimensional Phenomenon Modeling of the Cultural Heritage based on UAS Imagery (UAS 영상기반 문화유산물의 정밀 3차원 현상 모델링)

  • Lee, Yong-Chang;Kang, Joon-Oh
    • Journal of Cadastre & Land InformatiX
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    • v.49 no.1
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    • pp.85-101
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    • 2019
  • Recently, thank to the popularization of light-weight drone through the significant developments in computer technologies as well as the advanced automated procedures in photogrammetry, Unmanned Aircraft Systems have led to a growing interest in industry as a whole. Documentation, maintenance, and restoration projects of large scaled cultural property would required accurate 3D phenomenon modeling and efficient visual inspection methods. The object of this study verify on the accuracies achieved of 3D phenomenon reconstruction as well as on the validity of the preservation, maintenance and restoration of large scaled cultural property by UAS photogrammetry. The test object is cltural heritage(treasure 1324) that is the rock-carved standing Bodhisattva in Soraesan Mountain, Siheung, documented in Goryeo Period(918-1392). This standing Bodhisattva has of particular interests since it's size is largest stone Buddha carved in a rock wall and is wearing a lotus shaped crown that is decorated with arabesque patterns. The positioning accuracy of UAS photogrammetry were compared with non-target total station survey results on the check points after creating 3D phenomenal models in real world coordinates system from photos, and also the quantified informations documented by Culture Heritage Administration were compared with UAS on the bodhisattva image of thin lines. Especially, tests the validity of UAS photogrammetry as a alternative method of visual inspection methods. In particular, we examined the effectiveness of the two techniques as well as the relative fluctuation of rock surface for about 2 years through superposition analysis of 3D points cloud models produced by both UAS image analysis and ground laser scanning techniques. Comparison studies and experimental results prove the accuracy and efficient of UAS photogrammetry in 3D phenomenon modeling, maintenance and restoration for various large-sized Cultural Heritage.

Clinical Characteristics of Childhood Henoch-Sch$\"{o}$nlein Purpura with Duodenal Involvement by Upper Gastrointestinal Endoscopy (내시경상 십이지장을 침범한 Henoch-Sch$\"{o}$nlein Purpura 환아의 임상적 특징)

  • Park, Sun-Hee;Nam, Yoo-Nee;Park, Sang-Hui;Sim, So-Yeon;Eun, Byung-Wook;Choi, Deok-Young;Sun, Yong-Han;Cho, Kang-Ho;Ryoo, Eell;Son, Dong-Woo;Jeon, In-Sang;Tchah, Hann
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.12 no.2
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    • pp.156-162
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    • 2009
  • Purpose: The aim of this study was to investigate the clinical usefulness of upper gastrointestinal (GI) endoscopy in children with Henoch-Sch$\"{o}$nlein purpura (HSP). Methods: We retrospectively analyzed the clinical, endoscopic, and histopathologic records of children with HSP who had been admitted to the Department of Pediatrics of Gil Hospital and underwent upper GI endoscopy between January 2002 and June 2009. Patients were classified into the following two groups for statistical analysis: duodenal involvement (+) and duodenal involvement (-). Results: Fifty-one children with HSP underwent upper GI endoscopy; the mean age was 7.2${\pm}$2.9 years. The upper GI endoscopy showed abnormalities of the duodenum in 38 cases (74.5%), 22 of which had duodenal ulcers. Among the biopsy specimens obtained from the duodenum of 37 cases, 13 cases (35.1%) had leukocytoclastic vasculitis, neutrophil debri, and/or extravasation of RBCs. Steroid use was more frequent in the duodenal involvement (+) group (86.8%) than the duodenal involvement (-) group (53.8%; p=0.02). The mean length of hospitalization was 13.9${\pm}$8.43 days in the duodenal involvement (+) group and 8.1${\pm}$4.62 days in the duodenal involvement (-) group (p=0.003). The recurrence rate was significantly higher in the duodenal involvement (-) group than the duodenal involvement (+) group (p=0.027), whereas none of the other study parameters, such as the age of onset, renal involvement, and steroid use, led to significantly higher or lower recurrence rates. Conclusion: These results suggest that duodenal involvement can influence the clinical course and prognosis of HSP in children.

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A Pilot Study for Development of the Serious Game Contents for Education in the Elderly Diabetes (노인 당뇨환자 교육용 기능성 게임 콘텐츠 개발을 위한 예비연구)

  • Kim, Yu Jeong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.7
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    • pp.184-192
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    • 2017
  • This study was a pilot test of serious educational game content(named Roly Poly 160) designed to enhance self-care by elderly diabetics. Roly Poly 160 was developed in eight steps (literature review, demand survey and consultation, extraction of serious content using games, development of Roly Poly 160, pretest for users, workshop for health care workers, final completion of Roly Poly 160 and user satisfaction survey of Roly Poly 160). Roly Poly 160 is intuitively structured in three modules (self-management, card games, and quiz games) that can be self-managed by the elderly and is designed based on six principles. First, we constructed an intuitive interface considering the age of users. Second, the menu was selected as the main menu for Koreans and calorie learning was made at the same time. Third, the calories and nutrients (carbohydrate, fat, protein, calcium, sodium) of selected foods are analyzed, and all test data recorded in the questionnaire chart are graphically displayed by year, month and week so that the change trends can be grasped at a glance. Fourth, necessary data were saved and output and used as educational data. Fifth, user data are made compatible and aggregated and up to 100 million members can be registered. Sixth, it is designed to be developed as a mobile app if necessary. Using Roly Poly 160, 119 diabetic patients were diagnosed with diabetes, and the satisfaction score was 4.26 out of 5. These findings indicate that Roly Poly 160 is appropriate as a diabetes self-care tool and suggests that there is a possibility to use it as a program to educate people about diabetes in public health centers, hospitals and clinics.