The gap between expectations and reality: integrating computers into mathematics classrooms

Bu¨ lent Gu¨ven 서울대학교 교육연구소 2009 Asia Pacific Education Review Vol.10 No.4

As a result of dramatic changes in mathematics education around the world, in Turkey both elementary and secondary school mathematics curriculums have changed in the light of new demands since 2005. In order to perform the expected change in newly developed curriculum, computer should be integrated into learning and teaching process. Teachers' beliefs play a key role in this integration process. Negative beliefs against using computer in mathematics teaching may lead to failure of this process. With the help of this study, it is aimed to detect mathematics teachers' beliefs concerning Computer Assisted Mathematics Instruction (CAMI). Within the scope of this aim, the conducted questionnaire (The opinions of teachers about using computer in Mathematics Instruction) has been carried out on 91 mathematics teachers in the city of Trabzon. The acquired results have shown that mathematics teachers have developed negative opinions against CAMI. This state has revealed that there is a huge inconsistency between curriculum's positive expectations arising from computer usage and teachers' convictions.

Anesthetic management for dental surgery in a child with glycogen storage disease type IIIa: a case report

Buğra Aykenar,Nedim Çekmen 대한치과마취과학회 2022 Journal of Dental Anesthesia and Pain Medicine Vol.22 No.6

Glycogen storage disease (GSD) is a group of inherited disorders, which result in the deficiency of enzymes involved in glycogen metabolism, leading to an accumulation of glycogen in various organs. Deficiency of amylo-1-6-glicosidase (debranching enzyme) causes glycogen storage disease type III (GSD III). The main problems that anesthesiologists face in patients with GSD III include hypoglycemia, muscle weakness, delayed awakening due to abnormal liver function, possible difficulty in airway, and cardiomyopathy. In the face of these difficulties, airway preparation and appropriate glucose monitoring and support during the fasting period are important. The doses of the drugs to be used should be calculated considering the increased volume of distribution and decreased metabolic activity of the liver. We present the case of a child with GSD IIIa who underwent dental prosedation under general anesthesia. She was also being prepared for liver transplantation. This case was additionally complicated by the patient’s serious allergic reaction to eggs and milk.

Multimodality Imaging of Large Left Ventricular Apical Pseudoaneurysm after Thoracic Surgery

Mahmut Buğrahan Çiçek,Ahmet Karaduman,İsmail Balaban,Alev Kılıçgedik,Cevat Kırma 대한심장학회 2020 Korean Circulation Journal Vol.50 No.9

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A rare case of shingles after COVID-19 vaccine: is it a possible adverse effect?

Saliha Buşra Aksu,Güzin Zeren Öztürk 대한백신학회 2021 Clinical and Experimental Vaccine Research Vol.10 No.2

Coronavirus disease 2019 (COVID-19) exhibit mild to moderate symptoms, whereas 15% of COVID-19 cases progress to pneumonia, some associated cutaneous findings are also reported as maculopapular eruptions, morbilliform rashes, urticaria, chickenpox-like lesions, and livedo reticularis. The inactivated COVID‐19 vaccines are authorized for use in some countries including Turkey. Here, we report an unusual case of varicella-zoster virus (VZV) reactivation in a 68-year-old male patient who was vaccinated against COVID-19. The patient presented to family medicine clinic with a stinging sensation and pain radiating from the right side of his chest to his back. Physical examination revealed multiple pinheaded vesicular lesions upon an erythematous base occupying an area on his right mammary region and back corresponding to T3–T5 dermatomes. He reported that he got his second dose of COVID-19 vaccine 5 days ago. As COVID 19 decreases the cell-mediated immunity, it could also increase the risk of herpes zoster (HZ). Although the exact reason remains unsolved, vaccine-induced immunomodulation caused by live attenuated vaccines and attenuated alloreactivity caused by inactivated vaccines may be responsible mechanisms for the reactivation of HZ. Epidemiological studies are needed to clarify the possible connection between vaccination and reactivation of herpesvirus infections.

망간과 코발트 혼합산화물의 전해방법 및 활성도에 관한 연구

康富夫,金德默 단국대학교 대학원 1988 學術論叢 Vol.12 No.-

Mixed oxides containing cobalt oxides in electrolitic manganese dioxide have been prepared by on electrochemical process on titanium anode and cathode with manganes nitrate and cobalt nitrate solution. These oxides have been prepared in various electrolysis conditions current density, bath temperature, and Mixing Ratio. According to there results, current efficiency was excellent in low current density and high bath temperature, and there mixed oxides were superior to IC Sample Activity percentage value of these oxides has heigher value than one of IC Sample. By X-ray diffraction pattern, when low current density, crystal structure is homogeneous and discharge capacity is excellent.

망간전지의 방전 메카니즘에 관한 연구

金德默,康富夫 단국대학교 1987 論文集 Vol.21 No.-

The discharge reaction mechanism of the Leclanche cells was studied. The cell were discharged through flash light continuously. Discharge products were examined by chenical analysis and X-Ray diffraction. The discharge reaction product was MnOOH in a homogeneous solid-phase reaction. The X-Ray diffraction evidence on the single phase reduction of MnO^2 to MnOOH were presented. The products of these discharge reactions will be dependent on the kinds of Manganese Dioxide, electrloytes, potentials, and depth of discharge.

진주지방의 기후특성에 관한 연구 : 기온변화에 대한 통계적 분석 On the Statistical Analysis for the Temperature

이부권 慶尙大學校 1984 論文集 Vol.23 No.2

진주지방에서 관측된 1915년부터 1983년까지 1950년을 제외한 68개년 일기온(최고, 평균, 최저기온)자료를 이용하여 1월 1일부터 12월 31일까지 365일 각각에 대해 산술평균하여 이 지방의 표준기온을 산출하였다. 이것에 의하면 기온분포가 최고일로부터 좌우대칭이 아님을 알 수 있고 같은 날짜의 기온에 대하여도 그 표준오차가 대략 3℃-4℃정도로 큼을 알 수 있었다. 그리고 일기온을 표시하는 시간함수를 회귀분석에 의해 정현함수 꼴로 구하였다. 모형은 대체로 실제를 잘 반영하였다. 모형과 자료사이의 편기는 자료가 정확한 대칭이 아닌 데서 주로 기인되었다. 이러한 편기는 5월중순부터 7월 중순까지에 가장 심했다. 그리고 이 모형을 이용하면 적산온도 평균온도 등 여러 가지 기초정보를 쉽게 얻을 수 있다. From the meteorological data(1915.1.1-1983.12.31.) the standard temperatures in Jinju was estimated throughout the years. The distributions of the standard temperatures including the maximum, the minimum and the average temperatures were symmetrical but not exactly fitted to the estimated curves during the period of May to July by showing lower temperatures during the period than the symmetic curve. Fluctuations of the daily temperature were significant with a standard deviation of 3 to 4℃. From the regression analysis the function of temperatures to the time of a given day was described as a typical sinusoidal. With high efficiency the temperatures could be estimated from the function. Some biasedness found in the estimation of the real temperatures by the equation seemed to be ascribable to the matter of symmetry during the period. If the model is good enough to use, it was easily feasible with the model obtain useful informations on various temperatures such as the accumulated, average temperatures etc. in any arbitrary time period.

人的情報處理會計에 관한 硏究

高富彦 濟州大學校 社會科學大學 社會發展硏究所 1986 社會發展硏究 Vol.2 No.-

구자가 卵巢摘出로 誘發된 흰쥐의 骨多孔症에 미치는 影響 (2)

徐富一,金先熙,卞晟僖,金美麗 대한본초학회 1998 大韓本草學會誌 Vol.13 No.2

This study was performed to investigate the effects of Allii Tuberosi Semen(菲子) on osteoporosis after ovariectomy in rats. Control group received a daily po administration of normal saline for 4 weeks after oophorectomy(OVX). The other experimental group received a daily po administration of water extract of Allii Tuberosi Semen for 4 weeks after oophorectomy(OVX-ATS). Therefore, we measured levels of calcium, phosphorus, ash weights in femur. These results were as follows : 1. In the level of bone phosphorus, the result of OVX was 63.85±1.86㎎/㎗, but the result of OVX-ATS was 68.18±0.85㎎/㎗. But there was no statistical significance. 2. In the level of bone calcium, the result of OVX was 141.66±2.19㎎/㎗, but the result of OVX-ATS group was 164.82±3.74㎎/㎗. And the result of OVX-ATS showed significant increase in comparison with OVX. 3. In the level of bone ash weight, the result of OVX was 0.31±0.005(g), but the result of OVX-ATS was 0.33±0.002(g). And the result of OVX-ATS showed significant increase in comparison with OVX. The observations from these studies and the past studies(=A study on the effects of Allii Tuberosi Semen in ovariectomized osteoporosis of rats) suggest possible protective effect of Alli Tuberosi Semen water extract against bone loss in ovariectomized rats.

旣婚女性의 家庭縫裁 의욕에 관한 조사연구

이부련,박화순,배정숙 대구대학교 (한사대학) 산업기술연구소 1982 産業技術硏究 Vol.2 No.1

This study is to renew social apprecation of desire for home-sewing and to come up with improved solutions by researching women's desire for home-sewing. This study was carried out with 628, 20 question-papers from 800 random-sampled women from May, 20. 1981 till May. 30. 1981. In arrangement of the materials, the test X² was used. The result was a follows: 1. There was a significant difference between social classes and academic careers. 2. In the pleasure of sewing and in the difficulty of clothes-making, there was a meaningful difference between schoolings, home-sites, and social classes. 3. Also in the necessity of pattern-supplying, in the ability of handing machines and in making clothes, there was a sensible distinction between ages, school careers, and social classes. 4. In the direction of the texlure of cloth as well, there was a touchable difference between academic backgrounds, locations of homes, and classes.