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문제만들기(problem posing)활동을 통한 수학의 학습 지도
정동권,박정수 仁川敎育大學校 科學敎育硏究所 1998 과학교육논총 Vol.10 No.-
In the mathematics education, problem posing has been noticed as a method to achieve the various objects of curriculum and as an object itself. That is, it is has been regarded as an efficient step to develop the ability of mathematical thinking and of problem solving. However, up to now teachers didn't take several advantages of problem posing in the mathematics classroom since they made mostly children solve the ready made and given problems in accordance with the fixed algorithm. In this study we have aimed to improve such a realistic circumstances of our mathematics education, and hence instructed children in the division of fractions by utilizing positively their problem posing activity. Subsequently we analyzed the result of the instruction, and made some overtures.
임종권(Jung gweon Lee),김영상(Young Sang Kim),이종철(Chong Chul Lee) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.1
바둑에서 안정도는 사활 혹은 게임의 승패를 결정짓는 중요한 요소로서, 다음 수를 결정하기 위한 전략적 도구이다. 본 논문에서는 반면에 놓은 돌에 대한 연결 정도를 평가하여 새로운 안정도 수식을 유도함으로서 컴퓨터 바둑에서 유용하도록 하였다.
임증권(Jung Gweon Lim),김경아(Kyung A Kim),김진환(Jin Hwan Kim),박현수(Hyun Su Park),이두한(Du Han Lee),이종철(Chong Chul Lee) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.2
특별한 반면의 모양에 대해 적절한 다음 수가 정해지는 경우가 있는데, 이러한 경우에 대한 패턴들이 미리 저장되어 있으면, 이 들을 이용해 다음 수 선택의 판단 기준을 만들 수 있다. 본 논문에서는 이러한 패턴을 효율적으로 사용하기 위해 덩어리의 크기, 비 등형 수와 최대빈자리 수, 실제 빈자리 수, 인접 상대 덩어리 갯수를 이용해 패턴을 계층적으로 분류 저장하여 실시간 처리를 요하는 바 득에서 효율적으로 이용할 수 있도록 저장기법을 제안 하였다.
許重權(Huh, Jung-Gweon),丁德氣(Jung, Duk-gi) 국방부 군사편찬연구소 2012 군사 Vol.- No.85
This Article is to analyze the aspect and influence ofthe battle at Amakseong(阿莫城, The Amak Fort, in present Seongrisanseong(城里山城)), which was near Unbong(雲峰), Namweon(南原) in August A.D. 602 from the perspective of the military strategy. The Amakseong region was strategic and traffic point between Jeollabuk-do(全羅北道) and Gyeongsangnam-do(慶尙南道). Therefore Baekje(百濟) and Silla(新羅) valued highly of the region. In August A.D. 602, King Mu(武王) of Baekje started a war to occupy this region. And he besieged the Amakseong. But the king withdrew his troops from the Amakseong because of the specific situation of Baekje and the reaction of Silla. After the withdrawal of Baekje troops, Silla was building four Forts including Sotasoeng(小?城). Baekje sent cavalry, but the forts were completed. Because of that, Baekje failed to control the area. The battle in Amakseong suggests us some facts. From the point of Silla, the battle enabled it to expand its defense line at the Sobeak mountains and Silla was able to conduct offensive defense against Baekje. On the other hand, in case of Baekje, the purpose of the battle was to secure the shortestr oute to Taeyaseong(大耶城, The Taeya Fort) and to express the will of the King Mu. But a series of severe defeats weakened Baekje and Baekje’s attempt to advance to Taeya Fort was frustrated.
Synthesis of Polymers Including Both Triazole and Tetrazole by Click Reaction
Jung-Ah Shin,Yeong-Gweon Lim,Kyung-Hee Lee 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.2
Azido contained polymers were treated with various substituted N-propargyl tetrazoles in CH_2Cl_2/H_2O at room temperature by Cu-catalyzed [2+3] cycloaddition to afford high yields of the corresponding polymers, possessing both triazole and tetrazole moiety.
Jung, Yuchul,Park, Jungan,Choi, Yunjung,Yang, Jin-Gweon,Kim, Donggiun,Kim, Beom-Gi,Roh, Kyunghee,Lee, Dong-Hee,Auh, Chung-Kyoon,Lee, Sukchan BLACKWELLS 2010 JOURNAL OF INTEGRATIVE PLANT BIOLOGY Vol.52 No.10
<P>Arabis stelleri var. japonica evidenced stronger osmotic stress tolerance than Arabidopsis thaliana. Using an A. thaliana microarray chip, we determined changes in the expression of approximately 2 800 genes between A. stelleri plants treated with 0.2 M mannitol versus mock-treated plants. The most significant changes in the gene expression patterns were in genes defining cellular components or in genes associated with the endomembrane system, stimulus response, stress response, chemical stimulus response, and defense response. The expression patterns of three de novo proline biosynthesis enzymes were evaluated in A. stelleri var. japonica seedlings treated with 0.2 M mannitol, 0.2 M sorbitol, and 0.2 M NaCl. The expression of ?¹ -pyrroline-5-carboxylate synthetase was not affected by NaCl stress but was similarly induced by mannitol and sorbitol. The proline dehydrogenase gene, which is known to be repressed by dehydration stress and induced by free L-proline, was induced at an early stage by mannitol treatment, but the level of proline dehydrogenase was increased later by treatment with both mannitol and NaCl. The level of free L-proline accumulation increased progressively in response to treatments with mannitol, sorbitol, and NaCl. Mannitol induced L-proline accumulation more rapidly than NaCl or sorbitol. These findings demonstrate that the osmotic tolerance of the novel halophyte, Arabis stelleri, is associated with the accumulation of L-proline.</P>
Gweon-Young Ryu,Jung-Hyu Shin Korean Chemical Society 1991 Bulletin of the Korean Chemical Society Vol.12 No.2
The $^{13}C-NMR$ shifts of a series of para-substituted $8-aryl-tricyclo[3.2.1.0^{2,7}]oct-8-yl$ and $9-aryl-tricyclo[3.3.1.0^{2,8}]-non-9-yl$ cations were measured in $FSO_3H/SO_2ClF\ at\-90^{\circ}$ in order to examine whether the ${\rho}^{C^+}$ values can be used as a measure of the geometric influence on the charge delocalization resulting from ${\rho}$ conjugation in rigid tricyclopropylcarbinyl cations. Plot of the ${\Delta}{\delta}^{C+} shifts against the ${\sigma}^{C+}$ constants revealed excellent linear correlation. The 8-aryl tricyclooctyl systems yielded a ${\rho}^{C+}$ value of -5.00 with r = 0.9962. Previous investigation of the 9-aryl-tricyclononyl systems gave a correlation coefficient of r = 0.9948 with a slope of ${\rho}^{C+}$ = -4.95. A fair parallelism exists between the results of $^{19}F-NMR $ studies and the change of ${\rho}^{C+}$ value in these cations. Consequently, it is established that the ${\rho}^{C+}$ value can be used to explain the mechanism of charge stabilization of the rigid cyclopropylcarbinyl cation such as tricyclo $[3.2.1.0^{2,7}]oct-8-yl$ cation.