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.

淸代 醫學者인 汪昻에 關한 考察

徐富一 동서의학사 1999 동서의학 Vol.24 No.2

1세기초 廉斯國의 대외교섭

李富五 한국고대사학회 2001 韓國古代史硏究 Vol.22 No.-

This thesis is aimed at figuring out how the foreign relations of Yeomsa state have changed by taking a look at the activities of Chi (齒) and Somasi(蘇馬詩) in the early 1st century. Around the Christian era, Yeomsa state developed herself to a predominant one in Chinhan (辰韓) area, and such development stood on the basis of the trade hegemony with La - rang(樂浪) merchants and the right of control over the steel material trade against neighboring small states. Under such conditions, Chi, the Jusu(主師) of Yeomsa state, was regarded as predominant - Kosu(渠師) of Chinhan area. It was done together with the consolidation of his control power over Kukup(國邑) and Upnak(邑落). However, that brought about the repulsion of other groups in Kukup and he lost the status as Jusu in the end. In order to establish a new base and regain the past trade hegemony, he surrendered himself to and settled in Lorang - Kun. At that time he took issues with the matter of Han (漢 )people under detention in Chinhan area and arbitrated in the process of solving that matter. As a result, Lorang-Kun was provided Pyonhan - cloth(弁韓布) from Sara state (斯盧國) and also launched the relations with some part of Chinhan states. In the other hand. Saro state got the approval as the representative of other part of Chinhan states in the matter of foreign negotiation from Lorang - Kun. In recognition of arbitration for those advances. Chi was awarded tillage. a residence and an officiary coronet from Lorang Kun. He also arbitrated in the process of negotiations between Lorang - Kun and the others - the small states in the vicinity of Yeomsa state and a part of Chinhan states. Some part of these roles were fulfilled by the Chi group which remained in Yeomsa state. And that played as a momentum magnifying Yeomsa state's own position. In A.D. 44, so was the result that Somasi paid a tribute to Lorang-Kun and was appointed as Han - Yeomsa - Upkun(漢廉斯邑君). This implies that Yeomsa state got the official approval as the representative of those small states for the foreign negotiation matters. Such competence applied to the negotiation with Saro state or the leadership of forces in time of emergency. Hereupon, Yeomsa state led a type of the small states of league. The influence of Yeomsa state to other small states was somewhat weak compared with that of Sara state. In spite of such conditions, those two states maintained the proper equilibrium of power in the Chinhan area. Lorang - Kun admitted such reality and schemed to hold each other in check. Such equilibrium lasted till around the 2nd century when Sara state and Kumkwan state (金官國) brought themselves into relief as the representatives of Chinhan and Pyonhan.

疫學 파라메터에 關한 推測

손부순 순천향대학교 기초과학연구소 2000 순천향자연과학연구 논문집 Vol.6 No.1

For the investigation of the relationship between the exposure and the disease, it is necessary to infer the degree of the relationship. Some biologically deducible epidemiology parameters are useful for this. These parameters are the difference between risks, the rate ratio, the rate difference, and the assumption rate ratio by Odd's ratio. The investigation of the degree of inferential epidemiology parameters is important. and it is manifested by the confidential interval.

0.1mm 급 우량계 개발에 관한 연구 : LOAD CELL 특성에 관하여 Characterictics of Load Cell

이부용,박병윤 대구효성가톨릭대학교 응용과학연구소 1997 응용과학연구논문집 Vol.5 No.-

The load cell was tested for development of 0.1mm raingage at room temperature for 13 days. Two kinds of load cell was tested. One has a capacity of 120gram with no load, the other has a capacity of 3000gram with 500gram loaded. The results are as follows. 1) The out put of load cell was effected mainly by temperature. 2) The load cell had good ability in measuring the amount of 0.1mm rainfall. 3) The load cell with a capacity of 3000gram didn't show the creep under 500gram loaded during 13 days.