microwave diagram

Links: http://poj.org/problem?id=3164Test instructions: Tells N Point coordinates, m-bars indicate a path between two points, and a graph-minimum spanning tree is established from 1 o'clock onwards.Zhu Liu Algorithm template problemunder ========================== split line excerptSasuke_scutthe blog==================================================The smallest tree diagram, which specifies a special point root for a weighted graph, asks for a root-r

I. Introduction to UML Use case modeling Use case modeling is part of UML modeling, and it is the most basic part of UML. The most important function of use case modeling is to express the functional requirements or behavior of the system. According to my understanding use case modeling can be divided into use case diagrams and use case descriptions. Use-case diagrams are composed of actors (actors), use cases (using case), system boundaries, and arrows, which are done by drawing. Use case descr

Document directory 1) Call: the sender of the message sends the request to the receiver of the message, requesting the recipient object to perform some operation. Normally, this requires sending 2) asynchronous: In this message, the sender transfers the control to the receiver, but does not wait until the operation is completed. I. Description of the sequence diagram The sequence disequence describes the time sequence of messages transmitted betwe

UMLIncludes some graphical elements that can combine charts. 1. Class Diagram A class (ClassIs a class or a group of things with similar attributes and common behaviors. The rectangular box represents the icon of the class, which is divided3Regions. The top area is the class name, the middle area is the class attribute, and the column in the bottom area is the class operation. For example, a washing machine ( Processing Machine Such as the b

UML Use case diagram Summary author: tianhai110 Published: 2012-01-30 15:33 read: 100,263 recommendations: 57 Original link [Favorites]Use case diagrams are primarily used to describe the relationship between users, requirements, and system functional units. It shows a model diagram of a system function that an external user can observe."Purpose": helps the development team to understand the functional requ

Online Design System for Ship Circuit Diagram Based on java web and. net activex plug-in and visio, activexvisio 1. Main objectives of the system: 1. Online circuit diagram design and circuit equipment selection; 2. online processing of Engineering Computing involved in circuit diagram design; 3. Visualize the data involved in circuit

one), "0 ..." (representing 0 or more), "0,1" (for 0 or one), "N...M" (for N to M), "m...*" (for at least m).• Association Relationship (association) is the most commonly used relationship between classes and classes, which is a structured relationship between a class of objects and another class of objects. • In UML class diagrams, objects that are associated with a solid line are connected by a class that, when implemented in a programming language such as Java, C #, and C + +, typically uses

The definition of a diagram Graph is composed of a set of vertices with a poor non-empty set and an edge between vertices, usually expressed as: g (v,e), where G represents a graph, V is a set of vertices in graph G, and E is a set of edges in graph G. A direction graph There is to the edge: if from the vertex Vi to the edge of the Vj direction, it is called this side for the side, also become arc (ARC), with ordered even Unordered

This article mainly introduces the Python matplotlib implementation of the 3D diagram of the sample code, with a certain reference value, interested can understand Matplotlib can also draw 3D images, unlike two-dimensional images, drawing three-dimensional images mainly through the Mplot3d module implementation. However, using matplotlib to draw a three-dimensional image is actually shown on a two-dimensional canvas, so it is also necessary to load t

One: Define the adjacency table structure storage diagramThe traversal of the package graph;//The Establishment of adjacency table implementation diagram//storage edge class Edgenode {int index;//used to use index, in fact, the standard notation is (adjvertex) int value;//weight Edgenode Nextarc; The type of the Adjacency table node pointing to the next arc}//class Vertexnode {String name; Edgenode Firstarc = new Edgenode (); Point to the first arc}pu

Method of generating logical structure diagram of river????? Sometimes in order to show the relationship between rivers, you need to generate a logical structure diagram of the river. This logical diagram is a bit like the logical structure of a wire network, to the need to show the basic structure and connectivity, without the need to show real spatial geographi

IntroductionBeef Brisket News Release system looks very feel, a line of feeling, after all, this is a system implementation of the tutorial, including a variety of details, although just looked at 10 episodes around, but deeply by the beef brisket Teacher's explanation of ideas brought in, especially some of the previous learning process neglected details, rice teacher said, At present, learning knowledge, follow-up learning will also be encountered. Really, learning is a circle, this feature is

UML Class Diagram Relations Daquan1. AssociationBidirectional Association:C1-C2: Refers to both sides know each other's existence, can call each other's public properties and methods.This is described in the GOF design pattern book: Although this relationship is applicable in the analysis phase, we feel that it is too abstract to describe the class relationship within the design pattern, because the association relationship must be mapped to an object

！！！ Excerpt from: http://www.cnblogs.com/silent2012/archive/2011/09/07/2169946.htmlSeveral structure http://www.open-open.com/lib/view/open1328059700311.html in class diagram1. What is a class diagramClass diagram are mainly used to describe the structural design of a system. Class diagrams are also the most commonly used UML diagrams, with class diagrams showing classes, interfaces, and the static structure and relationships between them.2. Elements

In the painting ER diagram when looking for a more useful and professional point of the tool, looking for a half-day finally chose the seemingly less professional EA to draw ER diagram Briefly explain how the EA is implemented to draw ER graphs First, the Operation procedure 1. After creating a new project in the EA, select the model below 2. Then double-click the design Model on the right

In HR, the personnel organization structure is usually displayed in the form of Treeview. It gives people the feeling that the structure is not intuitive, the image is not displayed, and the size is relatively small, except for the name and cascade relationship, there is no other information. If you can export it to a Visio model diagram, that would be great? Next we will talk about how to export the organizational structure

Niuyun news system (II)-prototype diagram, database documentation, niuyun news system Niuyun news system (II)-prototype diagram and database documentation I have built a database and made settings for Foreign keys and components of the prototype diagram. I often hear from experienced software designers Project manager. If it takes four months to complete a soft

I. Introduction to the time sequence diagram (Brief Introduction) Sequence digraphs are graphs that show interactions between objects. These objects are arranged in chronological order. The sequence diagram shows the order of message interaction between the objects involved in the interaction and their objects. The time sequence diagram contains the following mod

VS comes with the "view Class Diagram" function is a bit too weak to explode, can only generate inheritance relationships, even more basic association relationship can not be generated. Let's look at how to use the modeling tools EA to generate powerful class diagrams.The following example demonstrates the EA 11.0.1106 as an example1. New ProjectCreate a new project for File, new project. In the pop-up model patterns, select class, click OK, and then

. When the socket is closed, its host TCP sends a fin of its own. We point out in the diagram that this occurs when the application process calls close, but recognizes that when a UNIX process terminates either voluntarily (calling exit or returning from the main function) or involuntarily (receiving a signal to terminate this process), all open descriptors are closed. This also causes a fin to be emitted on any TCP connections that are still open. Fi