• Title/Summary/Keyword: structural understanding

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Effect of Motivational Belief about Learning Science and Self-Directed Learning Ability on Middle School Students' Conceptual Understanding of Matter Change (과학학습에 대한 동기적 신념과 자기주도 학습능력이 중학생의 물질 변화 개념 이해에 미치는 영향)

  • Im, Sungmin;Kim, Inwhan
    • Journal of The Korean Association For Science Education
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    • v.36 no.1
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    • pp.125-134
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    • 2016
  • The purpose of this study is to explore the relationship between motivational belief about learning science, self-directed learning ability and conceptual understanding of matter change with a quantitative method, assuming that motivational belief and self-directed learning ability might affect conceptual understanding. To do this, the authors investigated middle school students' motivational belief about learning science, self-directed learning ability, and conceptual understanding of matter change using measurement tools based on previous studies, and then analysed the casual relationship between three variables using PLS structural equation model. As a result, three latent variables in this study could be evaluated as appropriated in reliability and validity. And also, self-directed learning ability could affect both the motivational belief and conceptual understanding, while motivational belief could affect only self-directed learning ability but not conceptual understanding. Through this study the authors confirmed that in the context of science learning self-directed learning ability can directly affect conceptual understanding but motivational belief can affect indirectly. This study is significant in that the causal relationship between different variables in science learning could be confirmed in a quantitate manner, and also in that it can suggest PLS structural equation method as a new research methodology in science education research area.

Review on the structural understanding of the 10S myosin II in the era of Cryo-electron microscopy

  • Anahita Vispi Bharda;Hyun Suk Jung
    • Applied Microscopy
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    • v.52
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    • pp.9.1-9.5
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    • 2022
  • The compact smooth muscle 10S myosin II is a type of a monomer with folded tail and the heads bending back to interact with each other. This inactivated form is associated with regulatory and enzymatic activities affecting myosin processivity with actin filaments as well as ATPase activity. Phosphorylation by RLC can however, shuttle myosin from the inhibited 10S state to an activated 6S state, dictating the equilibrium. Multiple studies contributed by TEM have provided insights in the structural understanding of the 10S form. However, it is only recently that the true potential of Cryo-EM in deciphering the intramolecular interactions of 10S myosin state has been realized. This has led to an influx of new revelations on the 10S inactivation, unfolding mechanism and association in various diseases. This study reviews the gradual development in the structural interpretation of 10S species from TEM to Cryo-EM era. Furthermore, we discuss the utility of Cryo-EM in future myosin 10S studies and its contribution to human health.

Applicability of Theory of Planned Behavior to Smoking-Cessation Intention: An Empirical Analysis Using Structural Equation Model (금연의도에 대한 계획된 행위이론의 적용타당성에 관한 연구: 구조방정식 모형을 이용한 실증적 분석)

  • Yoo, Hye-Ra;Lee, Sun-Hae;Yoo, Tae-Kyun
    • Korean Journal of Health Education and Promotion
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    • v.26 no.2
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    • pp.49-61
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    • 2009
  • Objectives: The purpose of the study was to test the applicability of the Theory of Planned Behavior(TPB) to Korean adult smokers in order to obtain an enhanced understanding of their smoking-cessation intention and to establish strategies for effective smoking-cessation interventions at the community clinic. Methods: The data came from a survey that was conducted on adult male smokers who visited the smoking-cessation clinic at H community clinic in Korea from January to November in 2006 (N=434). Included in the survey were questions asking core variables and salient belief variables dictated by TPB. A structural equation model was established using TPB and data were analyzed to examine the applicability of the theory to the understanding of the structure of variables leading to intention. Results: The analysis of the structural model revealed that the study model was statistically significant(p<.001), suggesting the high validity of TPB in explaining the structure of the data. Among the relationships in the model, negative behavioral beliefs were not significant(p>.05), and negative control beliefs and subjective norm were significant(p<.05) but not as highly as other variables in the model(p<.001). Conclusion: TPB was useful in understanding smoking-cessation intention of smokers who visited community clinic to stop smoking. More specific strategies for counseling and education need to be developed to enhance attitude and perceived behavioral control (self-efficacy) toward smoking-cessation intention, such as emphasizing health benefits of quitting smoking, and eliciting values and life principles that can help increase the intention to stop smoking.

Assessing Awareness, Understanding, Construction Practices and Innovation towards Green Construction

  • Zaini, Afzan Ahmad;Endut, Intan Rohani
    • International conference on construction engineering and project management
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    • 2015.10a
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    • pp.518-522
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    • 2015
  • Green Construction is the construction activities that conserved energy, land, water and material to reduce the negative effect to the environment while assuring essential demand on quality and safety during project construction. This paper critically examine the contribution of awareness and understanding, green construction practices and green construction innovation with the green construction benefits. A measurement model based on the theoretical framework and exploratory factor analysis was developed and tested using structural equation modelling technique. This study employs a survey research methodology involving a total of 346 respondents among construction contractors, developers, clients and consultants in the construction industry. The findings indicate that the awareness and understanding, green construction practices and green construction innovation are significant predictors of the green construction benefits. From the practical perspective, the findings should alert the construction participants on the need of awareness and understanding, green construction practices and green construction innovation towards the green construction benefits. In addition, the findings can be used as diagnostic tool for continuous improvements in the Malaysian construction industry.

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A Computer Model for the Planar Effects of Concrete Pavements with Skewed Joints. (콘크리트 포장구조의 평면응력 해석을 위한 컴퓨터모델)

  • 조병완
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1989.10a
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    • pp.15-18
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    • 1989
  • The planar effects on the concrete pavements Is mainly due to the concrete shrinkage, subgrade friction, and thermal expansion or contraction. A complete understanding of analytical behavior of concrete pavement requires the development of computer model, stiffness matrix and equivalent nodal load matrices due to the effects mentioned above. A computer program, INPLANE II, has been written to evaluate the planar effects on concrete pavements. The planar effects determine to what degree the joint open and also help In determining factors which affect the joint stiffnesses and structural behavior of concrete Pavements.

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A Study on Fire Resisting Construction Design in Advanced Nation (선진각국의 내화설계법에 관한 연구)

  • 김화중
    • Fire Science and Engineering
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    • v.2 no.2
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    • pp.17-30
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    • 1988
  • In Our Country, the fire safety design is done by the standard furnace fire test. This is haphazard procedure, as the standard furnace fire endurance of structural elements has little relation to the structural element endurance in an actual Compartment fire. The standard furnace fire test results, though obtained at great cost, do not contribute to the understanding of the behavior of structural elements in an elevated temperature environment and can not be applied rationally in fire safety design. The response of a steel and reinforced concrete structure in fire is a very complex problem. Therefore, in this paper is explained about tendency of study for fire safety design in advanced nations.

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A Role of NMR Spectroscopy in the Post-genomic Era

  • Lee, Weontae
    • Proceedings of the Korean Biophysical Society Conference
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    • 2003.06a
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    • pp.20-20
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    • 2003
  • The success of genome project brought us a vast amount of sequence information about whole genes for some species. In order to get functional understanding of un-annotated genes, a number of frontiers in structural biology proposed a new paradigm for structural research on the basis of given information. Structural biologists believe that the whole characters of the living cells come from the protein functions, which could be regulated by three-dimensional protein structures.

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