To the question about the necessity of descriptive geometry and graphics teaching for chemists and chemistry technologists

10.12737/776 ◽  
2013 ◽  
Vol 1 (2) ◽  
pp. 6-7 ◽  
Author(s):  
Ищенко ◽  
A. Ishchenko
Keyword(s):  
Conformational Analysis ◽  
Educational Program ◽  
Conformational Transitions ◽  
Interaction Process ◽  
Descriptive Geometry ◽  
Chemical Science ◽  
Spatial Thinking ◽  
Chemical Dynamics ◽  
Scientific Creativity ◽  
Molecular Systems

The vital necessity of descriptive geometry and graphic study by students which are training in the specialties of chemist and chemistry technologist is shown. It is concluded that any engineering and scientific creativity in modern chemistry as the science of materials, structural chemistry and chemical dynamics of molecular systems’ interaction process is impossible without the foundations of descriptive geometry, which forms and develops the human spatial thinking. The discovery of conformational transitions in molecules and, in the future, conformational analysis, has predetermined the broad use of descriptive geometry methods in the chemical science. The modern chemistry’s state analysis is leading to conclusion that at present time the descriptive geometry is needed in the educational program of modern chemist and chemistry technologist.

scholarly journals Application of augmented reality to study descriptive geometry

2021 ◽  
Author(s):  
Anastasia Alekseevna Shagalova ◽  
Tatyana Nikolaevna Tomchinskaya
Keyword(s):  
Augmented Reality ◽  
Three Dimensional ◽  
Visual Presentation ◽  
Descriptive Geometry ◽  
Spatial Thinking ◽  
Three Dimensional Objects ◽  
Educational Processes ◽  
Technology In Teaching ◽  
Augmented Reality Technology ◽  
Mobile Ar

This article analyzes the problems of the development of spatial thinking of students in the development of the discipline "Descriptive geometry", solving projection problems and proposes their solution using the technology of augmented reality. The concept and technology of augmented reality, tracking technologies are considered. The substantiation of the relevance and timeliness of its use to support educational processes is given. The article explores the use of augmented reality technologies in teaching students' spatial thinking, which saves time on the transfer and assimilation of information received by students within the framework of this discipline. The analysis of existing research in the field of application of augmented reality technology in teaching the discipline "Descriptive geometry" is carried out. The possibility of using augmented reality technology in education for the purpose of visual presentation of educational material is shown. A project for the development of a mobile AR application for visualizing the tasks of a textbook on descriptive geometry based on the Vuforia platform is considered. The proposed software product is implemented on a mobile platform with the Android operating system. When developing software, the C # programming language is used to write scripts to implement the required functionality, in particular, interactive interaction with three-dimensional objects.

scholarly journals Descriptive geometry as a tool for the development of future architects’ imaginative abilities

2019 ◽  
Vol 110 ◽  
pp. 02104
Author(s):  
Olga Melnikova ◽  
Svetlana Shuvalova
Keyword(s):  
Creative Thinking ◽  
Point Of View ◽  
Descriptive Geometry ◽  
Spatial Thinking ◽  
Real Point ◽  
Professional Work ◽  
High Importance ◽  
The Real ◽  
Made In

The article gives a brief overview of the types of perspective. The importance of perspective’s construction from the real point of view is noted. An attempt to clarify the significance of spatial thinking and crea-tive imagination in teaching an architect’s profession is made in this paper. The methods of descriptive geometry affecting the accuracy of visual clari-ty are determined. The importance of creative and professional characteris-tics of a student-architect and a practicing architect are examined. Stu-dents-architects and practicing architects with different working experience were presented as the respondents. The similarity in the designation of high importance of imagination and creative thinking in all groups of respond-ents in professional work was revealed.

Chemical Dynamics in Condensed Phases

2006 ◽  
Author(s):  
Abraham Nitzan
Keyword(s):  
Complex Systems ◽  
Condensed Phase ◽  
Quantum Dynamics ◽  
Vibrational Energy ◽  
Molecular Spectroscopy ◽  
Quantum Evolution ◽  
Condensed Phases ◽  
Solvation Dynamics ◽  
Chemical Dynamics ◽  
Molecular Systems

This text provides a uniform and consistent approach to diversified problems encountered in the study of dynamical processes in condensed phase molecular systems. Given the broad interdisciplinary aspect of this subject, the book focuses on three themes: coverage of needed background material, in-depth introduction of methodologies, and analysis of several key applications. The uniform approach and common language used in all discussions help to develop general understanding and insight on condensed phases chemical dynamics. The applications discussed are among the most fundamental processes that underlie physical, chemical and biological phenomena in complex systems. The first part of the book starts with a general review of basic mathematical and physical methods (Chapter 1) and a few introductory chapters on quantum dynamics (Chapter 2), interaction of radiation and matter (Chapter 3) and basic properties of solids (chapter 4) and liquids (Chapter 5). In the second part the text embarks on a broad coverage of the main methodological approaches. The central role of classical and quantum time correlation functions is emphasized in Chapter 6. The presentation of dynamical phenomena in complex systems as stochastic processes is discussed in Chapters 7 and 8. The basic theory of quantum relaxation phenomena is developed in Chapter 9, and carried on in Chapter 10 which introduces the density operator, its quantum evolution in Liouville space, and the concept of reduced equation of motions. The methodological part concludes with a discussion of linear response theory in Chapter 11, and of the spin-boson model in chapter 12. The third part of the book applies the methodologies introduced earlier to several fundamental processes that underlie much of the dynamical behaviour of condensed phase molecular systems. Vibrational relaxation and vibrational energy transfer (Chapter 13), Barrier crossing and diffusion controlled reactions (Chapter 14), solvation dynamics (Chapter 15), electron transfer in bulk solvents (Chapter 16) and at electrodes/electrolyte and metal/molecule/metal junctions (Chapter 17), and several processes pertaining to molecular spectroscopy in condensed phases (Chapter 18) are the main subjects discussed in this part.

scholarly journals Using Of Information Technologies To Improve The Spatial Understanding Of Students

2015 ◽  
Vol 2 ◽  
pp. 55
Author(s):  
Olafs Vronskis ◽  
Natālija Vronska
Keyword(s):  
Information Technologies ◽  
Three Dimensional ◽  
3D Models ◽  
Descriptive Geometry ◽  
Spatial Thinking ◽  
Spatial Understanding ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
Working Out ◽  
Research Show

It is possible to improve the development of students’ spatial thinking with various information technologies. We can improve students understanding with three dimensional models, created in the CAD program and special processing it in PowerPoint in the program, together with drafting in three planes. Gradually solving tasks in planes and explaining it in three dimensional models, the solution of concrete task is much clearer, because it is possible to look a situation together in planes and 3D models. The students of three faculties were polled that cognize the students’ opinions about teachers teaching methods in descriptive geometry lessons and analyze spatial understanding of students. A possibility to use information technologies to improve a descriptive geometry lectures have been researched in this work. The most important information about working out methodological materials has been generalized in discussion part. The results of research show that lectures with information technologies using improve students’ understanding of solved tasks during the lectures.

scholarly journals INNOVATION IN TEACHING THE DISCIPLINE «DESCRIPTIVE GEOMETRY» AND «ENGINEERING GRAPHICS»

2020 ◽  
Vol 4 (34) ◽  
pp. 112-118
Author(s):  
F.T. Ziganshina ◽  
◽  
L.N. Munirova ◽  
Keyword(s):  
Student Performance ◽  
Teaching Methods ◽  
New Technologies ◽  
Educational Process ◽  
Descriptive Geometry ◽  
Interactive Methods ◽  
Spatial Thinking ◽  
Educational Materials ◽  
Theoretical Concepts ◽  
Engineering Graphics

To implement the requirements of the main educational programs in the descriptive geometry and engineering graphics disciplines, an analysis has been made of the students 'low academic performance in recent years and modern auxiliary methods have been proposed to increase the level of students' mastering of these disciplines. As a result of the analysis of low student performance in these disciplines, external and internal causes are identified. External reasons include: the adaptation of freshmen to new learning conditions; lack of an initial base for descriptive geometry and drawing. Internal reasons include a decrease in the classroom load and a change in the form of final certification. Of these reasons, to improve the quality of teaching, it becomes necessary to adapt teachers to new working conditions, which entails a revision of teaching methods and technologies. In order to increase the level of students' mastery of the disciplines «Descriptive Geometry» and «Engineering Graphics» and to save educational time in the learning process, it is necessary to introduce interactive teaching methods. New technologies help shape spatial thinking, develop and shape the professional competencies of students. To implement interactive methods, various tools are used as software, which allow you to create supporting training materials. Based on various types of work with students, this paper proposes a classification of tools for creating educational materials or implementing interactive methods. In this case, the tools include software that allows you to create training videos, video materials, etc. The created material is animated videos with a detailed explanation of the tasks, video lectures, test tasks. In this paper, we propose a methodology for creating auxiliary training material. The purpose of these educational materials is, firstly, invaluable help to the student, which are aimed at the development of spatial thinking, the formation of basic theoretical concepts and ways of building drawings; secondly, saving time in the educational process.

Conformational Transitions in Escherichia coli Ribosomal RNAs as Visualized by Dedicated STEM

1988 ◽  
Vol 46 ◽  
pp. 176-177
Author(s):  
J.S. Wall ◽  
V. Maridiyan ◽  
S. Tumminia ◽  
J. Hairifeld ◽  
M. Boublik
Keyword(s):  
Ionic Strength ◽  
Three Dimensional ◽  
Conformational Transitions ◽  
Dark Field ◽  
Dimensional Structure ◽  
Ribosomal Rnas ◽  
Field Mode ◽  
Freeze Dried ◽  
High Resolution Images ◽  
Low Ionic Strength

The high contrast in the dark-field mode of dedicated STEM, specimen deposition by the wet film technique and low radiation dose (1 e/Å2) at -160°C make it possible to obtain high resolution images of unstained freeze-dried macromolecules with minimal structural distortion. Since the image intensity is directly related to the local projected mass of the specimen it became feasible to determine the molecular mass and mass distribution within individual macromolecules and from these data to calculate the linear density (M/L) and the radii of gyration.2 This parameter (RQ), reflecting the three-dimensional structure of the macromolecular particles in solution, has been applied to monitor the conformational transitions in E. coli 16S and 23S ribosomal RNAs in solutions of various ionic strength.In spite of the differences in mass (550 kD and 1050 kD, respectively), both 16S and 23S RNA appear equally sensitive to changes in buffer conditions. In deionized water or conditions of extremely low ionic strength both appear as filamentous structures (Fig. la and 2a, respectively) possessing a major backbone with protruding branches which are more frequent and more complex in 23S RNA (Fig. 2a).

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