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# Topic: Diagram

###### In the News (Mon 20 May 13)

 The Hertzsprung-Russell Diagram The Hertzsprung-Russell Diagram, pioneered independently by Elnar Hertzsprung and Henry Norris Russell, plots Luminosity as a function of Temperature for stars. It is readily apparent that the H-R Diagram is not uniformly populated, but that stars preferentially fall into certain regions of the diagram. The H-R Diagram may be partially understood in terms of the luminosity for a object emitting thermal radiation: cass.ucsd.edu /public/tutorial/HR.html   (242 words)

 Diagram - LoveToKnow 1911 We therefore class diagrams as diagrams of illustration, which merely suggest certain relations to the mind of the spectator, and diagrams drawn to scale, from which measurements are intended to be made. Of this kind are the diagrams of electrical connexions, and those belonging to that department of geometry which treats of the degrees of cyclosis, periphraxy, linkedness and knottedness. If the diagrams are drawn on the same piece of paper we may indicate corresponding points by drawing a line from one to the other, taking care that this line of correspondence is so drawn that it cannot be mistaken for a real line in either diagram. www.1911encyclopedia.org /Diagram   (680 words)

 Diagram of relationships among the SI units In the first column the symbols of the SI base units are shown in rectangles, with the name of the unit shown toward the upper left of the rectangle and the name of the associated base quantity shown in italic type below the rectangle. In the diagram the derivation of each derived unit is indicated by arrows that bring in units in the numerator (solid lines) and units in the denominator (broken lines), as appropriate. This equality is indicated in the diagram by the symbol K in parenthesis toward the upper right of the °C circle. physics.nist.gov /cuu/Units/SIdiagram.html   (493 words)

 A Survey of Venn Diagrams: Examples of Symmetric Diagrams for small n Diagram #3.1 of Class 1 in the list of all Venn diagrams for n=3 is also a polar symmetric diagram, but it is not simple, nor is it rigid. A polar symmetric rigid monotone symmetric 7-Venn diagram from [Wes]. The pie-slice (sector 1); the entire diagram may be obtained by rotating this diagram 11 times, on each successive rotation, relabelling the curves by the circular permutation (1 2 3 4 5 6 7 8 9 10 11). www.combinatorics.org /Surveys/ds5/VennSymmExamples.html   (2647 words)

 The Venn Diagram Page -- Symmetric Diagrams Think of the diagram as being projected stereographically onto a sphere with the axis running thru the point of symmetry, and then project the diagram back onto the plane from the antipodal point on the axis. For monotone diagrams the Grünbaum encoding uniquely identifies the diagram, and we believe that this is the case for the G-encoding and non-monotone diagrams. All the diagram construction methods employed by the author, for both simple and non-simple diagrams rely on constructing a 1/n pie-slice of the diagram, which is then rotated n times to get the full diagram. emis.math.ecnu.edu.cn /journals/EJC/Surveys/ds5/VennSymmEJC.html   (2490 words)

 Water phase diagram including high density ices A phase diagram shows the preferred physical states of matter at different temperatures and pressure. The complex central part of the phase diagram is expanded opposite. Other phase diagrams for water are presented elsewhere [681]. www.lsbu.ac.uk /water/phase.html   (1385 words)

 The Hertzsprung-Russell Diagram   (Site not responding. Last check: ) The Hertzsprung-Russell Diagram, pioneered independently by Elnar Hertzsprung and Henry Norris Russell, plots Luminosity as a function of Temperature for stars. It is readily apparent that the H-R Diagram is not uniformly populated, but that stars preferentially fall into certain regions of the diagram. The H-R Diagram may be partially understood in terms of the luminosity for a object emitting thermal radiation: cassfos02.ucsd.edu /public/tutorial/HR.html   (242 words)

 Diagramming Sentences Sentence diagramming is the process of taking a sentence apart, word by word, and placing each word on a pictorial relationship diagram which helps to show how the words are related to one another. On a diagram you would simply underline both words with a complete underline, then draw a vertical line between the words to separate the subject from the predicate. They receive a special kind of treatment in a diagram in that they are diagrammed on their own stair-stepped line above the normal base line then joined to the base line by a forked line wherever they belong. wonder.k12.ar.us /hellmer/diagramming.htm   (1234 words)

 Diagrams (Stanford Encyclopedia of Philosophy) Diagrams are usually adopted as a heuristic tool in exploring a proof, but not as part of a proof. This type of result directly refuted a widely-held assumption that diagrams are inherently misleading, and abolished theoretical objections to diagrams being used in proofs [Shin 1994,Hammer 1995]. Logical reasoning with diagrams is often carried out in virtue of their depiction of all possible models of a situation, up to topological equivalence of the diagrams (this, of course, depends on the particular diagrammatic system in use). plato.stanford.edu /entries/diagrams   (7995 words)

 Venn Diagram Template Venn diagrams are illustrations used in the branch of mathematics known as set theory. This diagram was introduced by the British philosopher and mathematician John Venn (1834-1923) in 1881. Johnston diagrams, which are used to illustrate statements in propositional logic, such as "Neither A nor B is true", and are a visual way of illustrating truth tables. www.conceptdraw.com /en/products/cd5/ap_venn_diagram.php   (305 words)

 Introduction to UML 2 Sequence Diagrams UML sequence diagrams model the flow of logic within your system in a visual manner, enabling you both to document and validate your logic, and are commonly used for both analysis and design purposes. Messages are indicated on UML sequence diagrams as labeled arrows, when the source and target of a message is an object or class the label is the signature of the method invoked in response to the message. This diagram models only the logic of the alternate course, as you can tell by the numbering of the steps on the left-hand side of the diagram, and the header note for the diagram indicates it is an alternate course of action. www.agilemodeling.com /artifacts/sequenceDiagram.htm   (3167 words)

 CIE Color System The diagram at left represents the the mapping of human color perception in terms of two CIE parameters x and y. The diagram at lower left is a rough rendering of the 1931 CIE colors on the chromaticity diagram. On the CIE chromaticity diagram at left, some annotation is made about the significance of different parts of the diagram. hyperphysics.phy-astr.gsu.edu /hbase/vision/cie.html   (651 words)

 UML's Sequence Diagram One of the primary uses of sequence diagrams is in the transition from requirements expressed as use cases to the next and more formal level of refinement. The frame element is optional in UML diagrams; as you can see in Figures 1 and 2, the diagram's label is placed in the top left corner in what I'll call the frame's "namebox," a sort of dog-eared rectangle, and the actual UML diagram is defined within the body of the larger enclosing rectangle. The diagram conveys this information along the horizontal and vertical dimensions: the vertical dimension shows, top down, the time sequence of messages/calls as they occur, and the horizontal dimension shows, left to right, the object instances that the messages are sent to. www.ibm.com /developerworks/rational/library/3101.html   (4874 words)

 UML's Sequence Diagram One of the primary uses of sequence diagrams is in the transition from requirements expressed as use cases to the next and more formal level of refinement. The frame element is optional in UML diagrams; as you can see in Figures 1 and 2, the diagram's label is placed in the top left corner in what I'll call the frame's "namebox," a sort of dog-eared rectangle, and the actual UML diagram is defined within the body of the larger enclosing rectangle. The diagram conveys this information along the horizontal and vertical dimensions: the vertical dimension shows, top down, the time sequence of messages/calls as they occur, and the horizontal dimension shows, left to right, the object instances that the messages are sent to. www-106.ibm.com /developerworks/rational/library/3101.html   (4866 words)

 pictures of computation and grammar The diagram is composed of interlocking elements that can represent either the application of functions in a process of evaluation, or the application of completely general symbolic rewriting rules to a stream of input symbols. In the vertical form of the diagram, recognition phases are drawn to the left of the central columns, and replacement or substitution phases are shown to the right of the central columns. Although these diagrams of functional evaluation show nesting during the recognition phase and during the substitution or replacement phase, the choice of a function to apply is usually made only when all the arguments are available. languagemachine.sourceforge.net /picturebook.html   (1903 words)

 The UML Class Diagram: Part 1 A class diagram is similar to a family tree. The classes and interfaces in the diagram represent the members of a family tree and the relationships between the classes are analogous to relationships between members in a family tree. Interestingly, classes in a class diagram are interconnected in a hierarchical fashion, like a set of parent classes (the grand patriarch or matriarch of the family, as the case may be) and related child classes under the parent classes. www.developer.com /design/article.php/2206791   (1918 words)

 A Survey of Venn Diagrams: Symmetric Diagrams Think of the diagram as being projected stereographically onto a sphere with the axis orthogonal to the plane running through the point of symmetry, and then project the diagram back onto the plane from the antipodal point on the axis. The diagrams produced by their construction are monotone and highly non-simple and have the property that there are n vertices through which all n curves pass. Another way of viewing it is that the diagram is composed of 2 copies of the ''pie-slice'' forming the top 1/2 of the diagram, with the curves labelled in the second copy by a permutation by a permutation of the colours in the first pie-slice. sue.csc.uvic.ca /~cos/venn/VennSymmEJC.html   (1903 words)

 2D Segment Voronoi Diagrams However, the dual graph is not a triangulation for two main reasons: we cannot always embed it on the plane with straight line segments that yield a triangulation and, moreover, we may have two faces of the graph that have two edges in common, which is not allowed in a triangulation. A direct consequence of the choice of representation is the algebraic degree of the predicates involved in the computation of the segment Voronoi diagram, as well as the storage requirements for the subsegments and points on intersection in the arrangement. It consists of a hierarchy of segment Voronoi diagrams constructed in a manner analogous to the Delaunay hierarchy by Devillers [Dev02]. www.cgal.org /Manual/3.1/doc_html/cgal_manual/Segment_Voronoi_diagram_2/Chapter_main.html   (3811 words)

 Scatter Diagrams When the scatter diagram has been plotted from the data, the user can view several different graphs within the Interpretations sections of the tutorial, read the interpretation of the diagrams pattern, and be able to draw conclusions about the plotted diagram by comparing it to one of the five possible graph patterns. A scatter diagram is composed of a horizontal axis containing the measured values of one variable and a vertical axis representing the measurements of the other variable. Commonly, while a cause-effect diagram has been used to describe the relationship between two variables, the histogram was used to visualize the structure of the data. deming.eng.clemson.edu /pub/tutorials/qctools/scatm.htm   (1026 words)

 Diagram Studio - Corporate organization charts Diagram Studio is the ideal program for creating a wide variety of flow charts, organization charts, presentation drawings, and diagrams. Diagram Studio offers you a wide choice of different tools which allow you to quickly and easily create flowcharts, business and technical diagrams, schemes, plans, family tree, etc. The focus of these tools is on ease-of-use, speedy results, automation, and quality output. Diagram Studio handles the hard parts of drawing a diagram and leaves you time to focus on the layout and appearance. www.diagramstudio.com /corporate_organization_charts.htm   (423 words)

 UML basics: The class diagram UML 2 considers structure diagrams as a classification; there is no diagram itself called a "Structure Diagram." However, the class diagram offers a prime example of the structure diagram type, and provides us with an initial set of notation elements that all other structure diagrams use. However, a class diagram that will be used to generate code needs classes whose attribute types are limited to the types provided by the programming language, or types included in the model that will also be implemented in the system. A diagram showing a package with contents does not need to show all its contents; it can show a subset of the contained elements according to some criterion, which is not necessarily all the package's classifiers. www-106.ibm.com /developerworks/rational/library/content/RationalEdge/sep04/bell/index.html   (4798 words)

 CTM: Frequency Response Tutorial, Nyquist The Nyquist diagram is basically a plot of G(j* w) where G(s) is the open-loop transfer function and w is a vector of frequencies which encloses the entire right-half plane. In drawing the Nyquist diagram, both positive and negative frequencies (from zero to infinity) are taken into account. However, we must also realize that if the diagram is shifted by theta degrees, it will then touch the -1 point at the negative real axis, making the system marginally stable in closed loop. www.engin.umich.edu /group/ctm/freq/nyq.html   (2092 words)

 A Survey of Venn Diagrams: Open Problems Find a 6-Venn diagram in which each curve is a rectangle; this problem is from Grünbaum [Gr84b]. For n = 2 there are diagrams that, in the plane, have rotational symmetry, and examples that have mirror-image symmetry (these examples due to Branko Grünbaum [FGK]). For a non-standard definition of Venn diagram an NP-completeness result is known (Johnson and Pollack [JP]). sue.csc.uvic.ca /~cos/venn/VennOpenEJC.html   (858 words)

 Acid-Base Tutorial - Acid-Base Diagram This first In-Vivo Linear Acid Base Diagram was created specifically to teach medical students. The diagram was derived from the Siggaard-Andersen In-Vivo Nomogram. Grogono Diagram (Grogono et al 1976) This version shows the same axes as in Diagram 1 but the Y-axis is relabeled "Metabolic Acidosis" in place of Negative Base Excess. www.acid-base.com /diagram.php   (474 words)

 Gadwin Systems - Diagram Studio Overview Diagram Studio is a powerful application for creating professional-looking business, technical drawings and illustrations for your documents quickly and easily. Diagram Studio is the ideal program for creating a wide variety of flowcharts, organization charts, and diagrams. Diagram Studio comes with complete flowcharting templates, network diagramming templates, block diagrams, org charts, and more to get you started. www.gadwin.com /ds   (427 words)

 UML basics: The class diagram UML 2 considers structure diagrams as a classification; there is no diagram itself called a "Structure Diagram." However, the class diagram offers a prime example of the structure diagram type, and provides us with an initial set of notation elements that all other structure diagrams use. However, a class diagram that will be used to generate code needs classes whose attribute types are limited to the types provided by the programming language, or types included in the model that will also be implemented in the system. A diagram showing a package with contents does not need to show all its contents; it can show a subset of the contained elements according to some criterion, which is not necessarily all the package's classifiers. www.ibm.com /developerworks/rational/library/content/RationalEdge/sep04/bell   (4806 words)

 Lay Out a Diagram [Enterprise Architect User Guide] This facility is available for Structural diagrams and Extended diagrams, but not for Behavioral diagrams (see UML diagrams for a description of the diagram types). Dynamic and Analysis diagrams are NOT suited to this form of layout - please ensure first that the diagram type you are laying out benefits from the action. Generally the default layout parameters provide adequate layouts for a wide range of diagrams, but there are times when more specific settings are required. www.sparxsystems.com.au /EAUserGuide/layoutadiagram.htm   (729 words)

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