http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Tumenbayar Davaanyam ),( Navchaa Tserendorj ) 한국수학교육학회 2015 수학교육연구 Vol.19 No.1
This study used a posttest control group design and to find out differences between students`` self-regulated learning strategies in traditional and non-traditional classroom. To this end, 131 first year university students within the experimental and control groups took part in the study. While ICT-based approach was used as the main medium of instruction in the experimental group, in the control group the paper- based traditional method was used. A survey adapted from Davaanyam [Davaanyam, T. (2013). The structural relationships among Mongolian students`` attitudes toward mathematics, motivational beliefs, self-regulated learning strategies, and mathematicsachievement. Ph. D. Dissertation. Jeonju, Jeonbuk, Korea: Chonbuk National Unversity.] was used to gather the data. The results of the study indicated a significant difference between the control and experimental groups in regard with their self-regulated learning. That is to say, the experimental group taught through ICT tools acquired higher levels of self-regulation as compared with the control group instructed through the traditional teaching method.
왕경수,Tumenbayar Davaanyam 대한사고개발학회 2012 사고개발 Vol.8 No.1
The relations among students' motivational beliefs, cognitive strategies using, test anxiety and mathematics achievement of high school newly graduated students in general examination were investigated. A 43-item questionnaire was administered to 303 high school graduating students in Mongolia. The questionnaires was developed and based on Motivational Strategies for Learning Questionnaire (MSLQ). Results indicated that, students' mathematics achievement related closely to cognitive strategy using. Cognitive strategy using is affected by students’ motivational beliefs. In addition, positive motivational beliefs can promote various cognitive learning strategies. Indirect effect of motivational beliefs for mathematics achievement was found high, and significant. Direct effects of motivational beliefs and test anxiety on mathematics achievement are strongly negative and significant. In other words, motivation is positively associated with effective using cognitive learning strategies, which affects their mathe- matics achievement in general examination.
Effects of alumina precursor species in a ternary-phase binder system on the strength of sand mold
Jung, Yeon-Gil,Tumenbayar, Erdenechuluun,Choi, Hyeun-Hee,Park, Hye-Young,Kim, Eun-Hee,Zhang, Jing Elsevier 2018 CERAMICS INTERNATIONAL Vol.44 No.2
<P><B>Abstract</B></P> <P>A new ternary-phase binder system incorporating alumina (Al<SUB>2</SUB>O<SUB>3</SUB>) precursors was successfully developed through process control to improve the sand mold's strength for casting of large objects. Three types of Al<SUB>2</SUB>O<SUB>3</SUB> precursors with different molecular structures, such as Al(OH)<SUB>3</SUB>, Al(OEt)<SUB>3</SUB>, and Al(NO<SUB>3</SUB>)<SUB>3</SUB> were employed in the ternary-phase binder system. A dual-dipping process was developed. The first dipping includes the ternary-phase binder composition and heat treatment at 1000 or 1200°C. The second dipping uses a binary-phase binder composed of TEOS and NaOMe and heat treatment at 1000°C. The results show that sodium aluminosilicate was synthesized in the ternary-phase binder at both temperatures, and amorphous silica was formed only in the ternary composition of TEOS/NaOMe/Al(OEt)<SUB>3</SUB>. In contrast, sodium silicate was formed in the binary-phase binder. The strength of the mold prepared with precursor Al(OEt)<SUB>3</SUB> was higher than those with Al(OH)<SUB>3</SUB> and Al(NO<SUB>3</SUB>)<SUB>3</SUB>, due to its improved glassification efficiency of Al(OEt)<SUB>3</SUB>. Additionally, the mold strength was increased with increasing content of TEOS in the ternary-phase binder composition. Finally, the optimal highest strength was obtained with the ternary-phase binder composition of TEOS/NaOMe/Al(OEt)<SUB>3</SUB> in the mole ratio of 5:1:1<I>.</I> </P>
Notes on Chain Rings and Radicals
Tumurbat, Sodnomkhorloo,Dayantsolmon, Dagva,Khulan, Tumenbayar Department of Mathematics 2018 Kyungpook mathematical journal Vol.58 No.3
We investigate connections in the classes of rings with chain property and the lattice of strongly hereditary radicals.