UMWEG – A computer program for calculation and graphical representation of Umweganregung-patterns

1985 ◽  
Vol 171 (3-4) ◽  
Author(s):  
E. Rossmanith
Keyword(s):  
Computer Program ◽  
Graphical Representation ◽  
Computer Plot

AbstractThe computer plot program UMWEG calculates and plots the positions and intensities of all operative reflections for a rotation of 360 degrees around the scattering vector of a chosen primary reflection.

scholarly journals Graphical representation standards for chemical structure diagrams (IUPAC Recommendations 2008)

2008 ◽  
Vol 80 (2) ◽  
pp. 277-410 ◽  
Author(s):  
Jonathan Brecher
Keyword(s):  
Computer Program ◽  
Chemical Structure ◽  
Graphical Representation ◽  
Rotational Alignment ◽  
Two Dimensional ◽  
Relative Positioning ◽  
Wide Audience ◽  
Color Selection ◽  
Structure Diagram

The purpose of a chemical structure diagram is to convey information - typically the identity of a molecule - to another human reader or as input to a computer program. Any form of communication, however, requires that all participants understand each other. Recommendations are provided for the display of two-dimensional chemical structure diagrams in ways that avoid ambiguity and are likely to be understood correctly by all viewers. Examples are provided in many areas, ranging from issues of typography and color selection to the relative positioning of portions of a diagram and the rotational alignment of the diagram as a whole. Explanations describe which styles are preferred and which should be avoided. Principal recommendations include: 1) Know your audience: Diagrams that have a wide audience should be drawn as simply as possible; 2) Avoid ambiguous drawing styles; 3) Avoid inconsistent drawing styles.

Peculiarities of staircase representation in educational process

2015 ◽  
Author(s):  
Birutė Juodagalvienė ◽  
Sonata Vdovinskienė
Keyword(s):  
Computer Program ◽  
Graphical Representation ◽  
Educational Process ◽  
Graphical Representations ◽  
Single Family ◽  
Building Regulations ◽  
Public Building

Every day we climb the stairs. The Lithuanian documents such as construction standards and technical building regulations show the rules of graphical representation of staircase elements. The graphical representation of staircase in the training measures for VGTU students is explained in two ways: old “pencil” methods (such as vertical and horizontal sections of the elements) and the adapted computer program in AutoCAD. Despite the different approaches, it is important to future building engineers to be able to understand and draw relationships between the elements of the stairs in the plan and cut. Students need to draw stairs projections in single family and public building course projects in two semesters. However there is no time to explain the peculiarities of drawing, although it should be done. Therefore, the authors believe that graphical representations .are necessary for additional demos (posters) helping to realize the features of stairs elements.

A general computer program for the extended plate overlap algorithm

1978 ◽  
Vol 48 ◽  
pp. 287-293 ◽  
Author(s):  
Chr. de Vegt ◽  
E. Ebner ◽  
K. von der Heide
Keyword(s):  
Computer Program ◽  
Simultaneous Determination ◽  
General Computer Program ◽  
General Computer

In contrast to the adjustment of single plates a block adjustment is a simultaneous determination of all unknowns associated with many overlapping plates (star positions and plate constants etc. ) by one large adjustment. This plate overlap technique was introduced by Eichhorn and reviewed by Googe et. al. The author now has developed a set of computer programmes which allows the adjustment of any set of contemporaneous overlapping plates. There is in principle no limit for the number of plates, the number of stars, the number of individual plate constants for each plate, and for the overlapping factor.

Structures and crystallization of vacuum-deposited amorphous Se and Sb films

1990 ◽  
Vol 48 (4) ◽  
pp. 140-141
Author(s):  
Makoto Shiojiri ◽  
Toshiyuki Isshiki ◽  
Tetsuya Fudaba ◽  
Yoshihiro Hirota
Keyword(s):  
Monte Carlo ◽  
Electron Microscope ◽  
Monte Carlo Method ◽  
Computer Program ◽  
Radial Distribution ◽  
Film Formation ◽  
Amorphous State ◽  
Two Dimensional ◽  
Amorphous Films ◽  
Binding Condition

In hexagonal Se crystal each atom is covalently bound to two others to form an endless spiral chain, and in Sb crystal each atom to three others to form an extended puckered sheet. Such chains and sheets may be regarded as one- and two- dimensional molecules, respectively. In this paper we investigate the structures in amorphous state of these elements and the crystallization.HRTEM and ED images of vacuum-deposited amorphous Se and Sb films were taken with a JEM-200CX electron microscope (Cs=1.2 mm). The structure models of amorphous films were constructed on a computer by Monte Carlo method. Generated atoms were subsequently deposited on a space of 2 nm×2 nm as they fulfiled the binding condition, to form a film 5 nm thick (Fig. 1a-1c). An improvement on a previous computer program has been made as to realize the actual film formation. Radial distribution fuction (RDF) curves, ED intensities and HRTEM images for the constructed structure models were calculated, and compared with the observed ones.

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