schätzung des aufwands bei software systemen
Randwertaufgaben bei Systemen von linearen partiellen doc
... Bildschirm optimiert, kann u bei Bedarf aber leicht f¨r den Druck angepasst werden Anweisungen dazu u finden Sie am Anfang des LaTeX-Quelltextes Randwertaufgaben bei Systemen von linearen partiellen ... auftritt; bei der Differentiation des Integrals uber k machen wir von IIb Gebrauch ¨ ) Die beiden letzten Ungleichungen lassen sich sicher erf¨llen, da deren linke Seiten den Grenzwert u bei δ = ... dabei bedeutet Ω2 eventuell nur den in Ω liegenden Teil eines Kreises; und den außerhalb Ω1 liegenden Teil von k nennen wir k1 Wir schreiben ∂Φ = Ψ0 + Ψ1 + Ψ2 , ∂ζ 1 ) Bei Differentiation des...
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Giáo trình SoftWare Testing
... Testing SDLC Document Software Requirement Specification Design Document Functional Specification Design Document & Functional Specs Design Document & Functional Specs Design Document & Functional ... software crisis! Thus we see that the software crisis on quality, reliability, high costs etc started way back when most of today’s software testers were not even born! The attitude towards Software ... Introduction to Software 1.1 Evolution of the Software Testing discipline The effective functioning of modern systems depends on our ability to produce software in a cost-effective way The term software...
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FONDEMENTS DE LA THEORIE DES GRAPHES.
... somme des arcs incidents Truong My Dung, Mail=tmdung@fit.hcmuns.edu.vn Chapitre Fondements de la Theorie des Graphes 1.2.2 Utilisation de pointeurs L’avantage de la représentation par des pointeurs ... xj est SUCCESSEUR de xi si (xi,xj) ∈ U ; l’ensemble des successeurs de xi est noté Γ(xi) xj est PREDECESSEUR de xi si (xj,xi) ∈ U ; l’ensemble des prédécesseurs de xi est noté Γ-1(xi) L’application ... Truong My Dung, Mail=tmdung@fit.hcmuns.edu.vn Chapitre Fondements de la Theorie des Graphes 1.2 REPRESENTATIONS DES GRAPHES Un certain nombre de représentations existent pour décrire un graphe...
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DSP Software
... defined as all of the mantissa and exponent bits being zero (2) ±4 is defined as all of the mantissa bits being zero, and all of the exponent bits being one (3) A group of very small unnormalized ... numbers being added and subtracted In particular, the random error curve in Fig 4-4 was generated by defining: A ' EXP(RND) and B ' EXP(RND) , rather than: A ' RND and B ' RND Instead of A and B being ... provided, allowing you to program without being bothered by how the microprocessor actually operates In the best case, the manufacturer will provide a sophisticated software package to help in the programming:...
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An Introduction to Software Engineering
... a software process? What is a software process model? ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter Slide FAQs about software engineering What are the costs of software ... • Software must evolve to meet changing needs; Software must be trustworthy; Software should not make wasteful use of system resources; Software must accepted by the users for which it was designed ... 2004 Software Engineering, 7th edition Chapter Slide 30 Key points CASE tools are software systems which are designed to support routine activities in the software process such as editing design...
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Software Processes
... 2004 Software Engineering, 7th edition Chapter Slide 25 Design process activities Architectural design Abstract specification Interface design Component design Data structure design Algorithm design ... 2004 Software Engineering, 7th edition Chapter Slide 24 Software design and implementation The process of converting the system specification into an executable system Software design • Design ... Sommerville 2004 Software Engineering, 7th edition Chapter Slide 21 Process activities Software specification Software design and implementation Software validation Software evolution...
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Software Requirements
... 35 Requirements and design In principle, requirements should state what the system should and the design should describe how it does this In practice, requirements and design are inseparable ... ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter Slide 31 Requirement problems Database requirements includes both conceptual and detailed information • • Describes the concept ... domain ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter Slide 10 Functional requirements Describe functionality or system services Depend on the type of software, expected users...
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Real-time Software Design
... Software Engineering, 7th edition Chapter 15 Slide 13 System design Design both the hardware and the software associated with system Partition functions to either hardware or software Design ... class of stimulus and response ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 15 Slide 15 R-T systems design process Design algorithms to process each class of stimulus ... tor Software Engineering, 7th edition Chapter 15 Slide Sensor/actuator processes Sensor Actua tor Stim ulus Sensor contr ol ©Ian Sommerville 2004 Response Data processor Actua tor control Software...
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Rapid software development
... critical requirement for software systems Businesses may be willing to accept lower quality software if rapid delivery of essential functionality is possible ©Ian Sommerville 2004 Software Engineering, ... way to deliver software quickly ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 17 Slide Characteristics of RAD processes The processes of specification, design and implementation ... methods: • • • Focus on the code rather than the design; Are based on an iterative approach to software development; Are intended to deliver working software quickly and evolve this quickly to meet...
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Software Reuse
... recognised that to achieve better software, more quickly and at lower cost, we need to adopt a design process that is based on systematic software reuse ©Ian Sommerville 2004 Software Engineering, 7th ... dependability Reused software, that has been tried and tested in working systems, should be m ore dependable than new software The initial use of the software reveals any design and implementation ... for the software ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 18 Slide 14 Concept reuse When you reuse program or design components, you have to follow the design decisions...
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Component-based software engineering
... Component-based development Component-based software engineering (CBSE) is an approach to software development that relies on software reuse It emerged from the failure of object-oriented ... that provides support for component inter-operability A development process that is geared to reuse ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 19 Slide CBSE and design principles ... interface; ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 19 Slide Component definitions Councill and Heinmann: • A software component is a software element that conforms to...
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Software evolution
... updated The majority of the software budget in large companies is devoted to evolving existing software rather than developing new software ©Ian Sommerville 2004 Software Engineering, 7th edition ... their existing software systems ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 21 Slide Importance of evolution Organisations have huge investments in their software systems ... Software change Software change is inevitable • • • • • New requirements emerge when the software is used; The business environment changes;...
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Software testing
... Sommerville 2004 Software Engineering, 7th edition Chapter 23 Slide Testing phases Component testing Software developer ©Ian Sommerville 2004 System testing Independent testing team Software Engineering, ... exposes a defect in the system ©Ian Sommerville 2004 Software Engineering, 7th edition Chapter 23 Slide The software testing process T est cases Design test cases T est data Prepar e test data ©Ian ... edition Chapter 23 Slide 31 Test case design Involves designing the test cases (inputs and outputs) used to test the system The goal of test case design is to create a set of tests that...
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Software cost estimation
... Sommerville 2004 Software Engineering, 7th edition Chapter 26 Slide Software productivity A measure of the rate at which individual engineers involved in software development produce software and ... all software would be developed from scratch Since its formulation, there have been many changes in software engineering practice and COCOMO is designed to accommodate different approaches to software ... Sommerville 2004 Software Engineering, 7th edition Chapter 26 Slide 32 Estimate uncertainty 4x 2x x Feasibility Requirements Design Code Delivery 0.5 x 0.2 x ©Ian Sommerville 2004 Software Engineering,...
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Applying TRIZ in IT OUTSOURCING & SOFTWARE ENGINEERING
... the container instead of being hardcoded Porous software through the use of well-defined interfaces which can be plugged in by multiple third party developers using software adapters at a later ... 06520327 Applying TRIZ in IT Outsourcing & Software Engineering Trang MỤC LỤC Trường ĐH CNTT – CNPM01 – 06520327 Applying TRIZ in IT Outsourcing & Software Engineering I Trang MỘT SỐ KHÁI NIỆM ... in IT Outsourcing & Software Engineering Thực :Lê Hồng Hải Nhân 06520327 Niên khóa : 2006 - 2010 Trường ĐH CNTT – CNPM01 – 06520327 Trang Applying TRIZ in IT Outsourcing & Software Engineering...
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How to setup a Linux system that can boot directly from a software RAID
... create the software RAID partitions In the example both disks are split into a 3498Mb and a 596Mb software RAID partitions: Device Type Size Mbytes /dev/hda1 software RAID 3498 /dev/hda2 software ... Type Size Mbytes /dev/hda1 software RAID 3498 /dev/hda2 software RAID 596 /dev/hdc1 software RAID 3498 /dev/hdc2 software RAID 596 If the disks are new, the partitioning utility will ask to create ... lost), and delete or resize existing partitions to create space for the software RAID partitions If the disks already contain software RAID partitions and they fit your needs, they can be used The...
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LINUX SOFTWARE RAID
... and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) ... chunk, algorithm [3/3] [UUU] unused devices: [root@bigboy tmp]# Conclusion Linux software RAID provides redundancy across partitions and hard disks, but it tends to be slower and less reliable ... controller when using RAID, especially in a corporate environment In a home or SOHO setting, IDE-based software RAID may be adequate Serial ATA Drives Serial ATA type drives are rapidly replacing IDE,...
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