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.

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.

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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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.

太宰 治의 人間像 - 「斜陽」을 中心으로 -

정부용 京畿專門大學 1996 京畿專門大學 論文集 Vol.- No.24

아산 터미널의 실내·외 공기 오염 농도

손부순 순천향대학교 기초과학연구소 2001 순천향자연과학연구 논문집 Vol.7 No.2

The indoor and outdoor levels of nitrogen dioxide(NO_2) and sulfur dioxide(SO_2) were studied at the bus terminals in Asan area. The mean levels of indoor and outdoor NO_2 were 36.05 and 33.70ppb, respectively; this difference did not have a statistical significance. The mean levels of indoor and outdoor SO_2 were 12.95 and 12.3ppb, respectively. The higher levels of NO_2 and So_2 showed in local bus terminal than express bus terminal. The higher levels also exhibited in winter than summer.

스포츠 문화가 대중문화에 주는 의미

김부찬 圓光大學校附設 生活體育硏究所 2001 生活體育硏究 Vol.11 No.-

The perpose of study is about the course which sport has especially(or normally) taken to go into the general public culture. Today, sport has changed the masses with a heterogeneous or homogeneous character not only as the best cultural act but also as a recreation and consumption goods and sport in the 21st century in itself is already a part of the cultural life and it has built up a vast Net-work through an image of advertisement. We can contact without visiting a sport event spot with sports culture through Mass- media or sport news for 24 hours. In this situation, we must think over side effects which drive the cultural life out of normal orbit. We should enjoy participating in the sports culture and consuming as an amusement act. So now the culture becomes the symbol of our present society spent, that is, have to be recognized as a great something of life and be made up of the good directions which take human life into the improvement of quality for our society for the sport culture to succeed through a constant physical exercise and a fair play spirit.

웹 기반의 교수자·학습자간 행동 동기화 기법을 이용한 실시간 원격 강의 시스템

이부권,박규석 경남대학교 정보통신연구소 1999 연구논문집 Vol.1 No.-

현재 다양한 환경에서 여러가지 원격 강의 기법이 있지만, 아직 면대면 강의보다 적합한 시스템은 거의 없다. 이와 같이 아직도 면대면 강의가 훨씬 효율적이라는 것은 누구도 부정할 수 없다. 하지만 컴퓨터를 이용한 원격 강의에서 면대면 강의의 효과를 그대로 적용할 수 있다면 면대면 강의의 효과를 얻을 수 있을 것이다. 본 논문에서는 면대면 강의에서 발생할 수 있는 교수자의 행동을 분석하여 학습자의 상황으로 그대로 전이시켜 면대면 강의의 효과를 제공하는 것이다. 교수자의 행동은 설명을 하기 위한 소리의 전달, 칠판이나 TP의 내용을 가리키는 포인팅, 그리고 문서의 페이지 또는 형태가 된다. 먼저 학습자가 웹 상의 홈페이지를 이용해서 문서를 검색하며, 이후에 교수자는 설명을 소리로써 하게 되며, 특정 페이지를 보게 된다. 특히 설명을 위해서 마우스를 이용해 특정 위치를 가리키게 된다. 이와 같이 모든 교수자의 행동을 감지하여 학습자로 전달시켜 주는 기능과 전달받은 의미를 분석하여 학습자에게 표현해 주는 기능으로 분류할 수 있는데 본 논문에서는 전자를 서버, 후자를 클라이언트라고 정의한다. There are many different remote lecture systems, but there is no better lecture system than face-to-face system. And, nobody can deny the face-to-face lectures are more efficient. Accordingly, if a computer assisted lecture can adapt the effect of face-to-face lecture, we could acquire the effect. In this paper, we analyze teacher's actions in face-to-face lecture, and transfer it to the student's aspects and can provide the effect of face-to-face lecture. Teacher's actions are voice delivery to explain something, pointing objects and pages or form of documents. First, students display document pages via Web. Then, the teacher gives voice to explain the contents and points to the document. The server(teacher side) captures teacher's action and transfers it to students, and the client(student side) receives and analyzes the action, then presents it on monitor or speaker.