building system models for re

Requirements Engineering From System Goals to UML Models to Software Specifications docx

Ngày tải lên : 13/07/2014, 07:20

... Software requirement: prescriptive statement refering to requirement shared phenomena – to be enforced by the software-to-be solely – formulated in the vocabulary of software developers measuredSpeed ... Software Chap.1: Setting the Scene doorsState = 'closed' © 2009 John Wiley and Sons 19 Types of statements: system requirements, software requirements  System requirement: prescriptive statement refering ... Sons  25 Requirements taxonomies are helpful  More specific definition of what requirements are in specific classes  More semantic characterization of requirements – prescribing desired behaviors...

61
513
0

Phản ứng xúc tác dị thể 4

Ngày tải lên : 04/10/2012, 15:10

7
1K
9

Hoạt động tập thể 4

Ngày tải lên : 12/06/2013, 01:25

64
1K
2

The Document Object Model (DOM)

Ngày tải lên : 30/09/2013, 04:20

... DOM tree Notice that this code is recursive For each node, we process the node itself, then we call the printDOMTree function recursively for each of the node’s children The recursive calls are ... obscene e-mail greeting to everyone in your address book (Not really These methods return the next or previous sibling of a given Node.) Node.getAttribute(attrName) For a given Node, returns the ... parseAndPrint(String uri) public void printDOMTree(Node node) public static void main(String argv[]) The source code for domOne is pretty straightforward We create a new class called domOne; that class...

7
423
0

The Document Object Model

Ngày tải lên : 05/10/2013, 13:20

... The DOM representation of this document is the tree pictured in Figure 17-1 Figure 17-1 The tree representation of an HTML document If you are not already familiar with tree structures in computer ... the table specifies what other features are required for support of a feature and are therefore implied by a return value of true For example, if hasFeature( ) indicates that the MouseEvents ... used to represent XML documents, which have a more complex syntax than HTML documents, and the tree representation of such a document may contain nodes that represent XML entity references, processing...

42
402
0

The Three Layer Model

Ngày tải lên : 05/10/2013, 13:20

... information offered (and may even be searching for it), are reached insufficiently or not reached at all Supply of (unified) Information or Services Information or Service Offerings (Query Responses) ... here, agents' tasks are to find out exactly what users are looking for, what they want, if they have any preferences with regard to the information needed, etcetera; The supply side (of information), ... where and from whom requested information has been retrieved In case of, say, product information, a user would certainly want to know this Whereas with, say, a request for bibliographical information,...

15
394
0

The OSI Reference Model

Ngày tải lên : 19/10/2013, 03:20

... before unpacking the books or sets up the bureaus before unpacking the clothes Otherwise, the books and the dishes would be unpacked before there are places to put them The different boxes for ... (Figure 5.3) This “leap” can be explained by the fact that Layers through are valid only on a linkby-link basis The remainder of this book frequently refers to the OSI Reference Model For that reason, ... (truck, railroad, plane, ship) and requires the reloading of the boxes into different containers That also requires that, for each leg of the journey, addresses for the temporary, intermediate destinations...

11
421
0

Timothy ferriss - the 4 hour workweek

Ngày tải lên : 22/10/2013, 19:24

79
816
0

The Black Scholes Model

Ngày tải lên : 25/10/2013, 19:20

... the ﬁrst line is the Black Scholes formula and the second line represents a replicating portfolio The model can therefore be interpreted as the recipe for replicating a call: buy e−qT N[d1 ] ... therefore zero, which is the same as for an equity where q = r Clearly, this same result would hold for a futures price when t T = Ft T , i.e when interest rates are constant However the result ... of foreign currency options is not usually carried out with physical foreign currency It is much more convenient and less cash consuming to use forward contracts or futures Note that the forwards...

12
425
1

Bài giảng Chapter 7 The Quantum-Mechanical Model of the Atom

Ngày tải lên : 28/11/2013, 01:11

... frequency of the waves the larger the wave amplitude, the more force it has the more frequently the waves strike, the more total force there is Tro, Chemistry: A Molecular Approach 10 The Relationship ... and predict the properties of atoms that are directly related to the behavior of the electrons  why some elements are metals while others are nonmetals  why some elements gain electron when forming ... Nature • light is a form of electromagnetic radiation  composed of perpendicular oscillating waves, one for the electric field and one for the magnetic field  an electric field is a region where...

79
368
0

systems with hysteresis. analysis_ identification and control using the bouc–wen model

Ngày tải lên : 12/12/2013, 22:41

... least-squares algorithm include References [21] to [25] For example, Reference [21] considers a second-order single-degree-of-freedom system which is a mass subject to a nonlinear restoring force ... in References [49] to [58] In Reference [49] fuzzy control is used for a structure modelled as a second-order single-degree-of-freedom structural system that includes a Bouc–Wen hysteresis In Reference ... properties of systems that include a Bouc–Wen hysteresis For example, Reference [107] analyses the influence of hysteresis dissipation on chaotic responses, Reference [113] studies the nonlinear response...

223
525
1

Tất cả