building system models for re
Requirements Engineering From System Goals to UML Models to Software Specifications docx
... 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...
Ngày tải lên: 13/07/2014, 07:20
The Document Object Model (DOM)
... 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...
Ngày tải lên: 30/09/2013, 04:20
The Document Object Model
... 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...
Ngày tải lên: 05/10/2013, 13:20
The Three Layer Model
... 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,...
Ngày tải lên: 05/10/2013, 13:20
The OSI Reference Model
... 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...
Ngày tải lên: 19/10/2013, 03:20
The Black Scholes Model
... 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...
Ngày tải lên: 25/10/2013, 19:20
Bài giảng Chapter 7 The Quantum-Mechanical Model of the Atom
... 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...
Ngày tải lên: 28/11/2013, 01:11
systems with hysteresis. analysis_ identification and control using the bouc–wen model
... 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...
Ngày tải lên: 12/12/2013, 22:41
Chapter 6 The Single Index Model and Bivariate Regression
... market are controlled for, assets are uncorrelated 1.2 Matrix Algebra Representation of the Single Index Model The single index model for the entire set of N assets may be conveniently represented ... in the regression and MARKET refers to rMt The least squares regression coefficients are reported in the column labeled Coefficient and the estimated standard errors for the coefficients are in then ... relationship may be used to create predictions of expected returns over some future period For example, suppose αi = 0.01, β i,M = 0.5 and that a market analyst forecasts µM = 0.05 Then the forecast...
Ngày tải lên: 17/12/2013, 15:17
Tài liệu The IS-LM model doc
... model 20 10 interest rate, i IS r2 IS´ r1 = i1 A i2 B LM Y An expected deflation (a negative value of πe) raises the real interest rate for any given nominal interest rate, and this depresses investment ... graph Now increase the price level from P1 to P2 B An increase in P lowers the value of real money A balances, and Y, shifting LM leftward to point B Notice that r increased Since r increased, we ... to left, returning Y to Y* as required by long-run LRAS P +, in order to eliminate the excess demand at P r +, reflecting the leftward shift in LM due to +∆P C 0, since both Y and T are back...
Ngày tải lên: 20/12/2013, 18:15
Tài liệu Discover The 4 Key Secrets To Playing The Auction House In World Of Warcraft pdf
... where to grind So, where are these great places to grind, you ask? Well, here are 10 great places to grind for gold in the World of Warcraft: Place 1: In Winterspring, at the Lake of Kel-The-rell, ... make a good amount of cash here grinding Place 7: In Silverpine Forest, there are groups of Wizards and Mages that always drop money These are great for those who are level 12-20, and you can ... But, for those who are either just starting out in the World of Warcraft, or who have not hit the Outlands yet, here are four reasons that the Outlands are so much better for making gold for your...
Ngày tải lên: 24/12/2013, 02:15