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Record Nr. |
UNINA9910830129503321 |
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Autore |
Aouad Ghassan |
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Titolo |
Requirements engineering for computer integrated environments in construction [[electronic resource] /] / Ghassan Aouad & Yusuf Arayici |
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Pubbl/distr/stampa |
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Chichester, West Sussex, U.K. ; ; Ames, IA, : Blackwell Pub., 2010 |
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ISBN |
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1-283-20478-9 |
9786613204783 |
1-4443-1774-1 |
1-4443-1775-X |
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Descrizione fisica |
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1 online resource (258 p.) |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Communication in the building trades |
Building - Superintendence - Data processing |
Requirements engineering |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Requirements Engineering for Computer Integrated Environments in Construction; Contents; Foreword; Preface; Acknowledgments; Abbreviations; Chapter 1 Introduction; 1.1 Definitions; 1.1.1 Computer integrated environments; 1.1.2 Requirements engineering; 1.2 Why Requirements Engineering Is Needed for the CIE Development; 1.3 How the Requirements Engineering Approach Is Formulated; Chapter 2 Requirements Engineering in Software Development; 2.1 Introduction; 2.2 Requirements Engineering; 2.3 Requirements Fundamentals and Principles; 2.3.1 Purposefulness; 2.3.2 Appropriateness; 2.3.3 Truthfulness |
2.4 Requirements Engineering Process2.4.1 Contextual design approach; 2.4.2 Use case-driven requirements analysis; 2.4.3 Agile requirements engineering processes; Chapter 3 Computer Integrated Environments; 3.1 Introduction; 3.2 The Construction Industry and its Features; 3.2.1 Benefits of CIE to the construction industry; 3.3 The Scope and Roles of CIE in Construction; 3.3.1 Building information modelling (BIM); 3.3.2 Product models; 3.4 Implementation of CIE in the Construction Industry; 3.5 The CIE Case Study Project 1; 3.5.1 The CIE |
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system in Case Study 1; 3.6 The CIE Case Study Project 2 |
3.6.1 The CIE system in Case Study 23.7 The CIE Case Study 3; 3.7.1 The CIE system in Case Study 3; 3.8 The CIE Case Study 4; 3.8.1 The CIE system in Case Study 4; Chapter 4 Requirements Engineering in CIE Development for the Construction Industry; 4.1 Introduction; 4.2 CIE Systems from Technological Perspective; 4.3 Requirements Engineering in the CIE Community; 4.3.1 The ATLAS system; 4.3.2 The OSCON system; 4.3.3 The SPACE system; 4.3.4 The WISPER system; 4.3.5 The GALLICON system; 4.3.6 The DIVERCITY system; 4.3.7 The nD modelling system; 4.4 Interviews in the Construction CIE Community |
4.4.1 Importance of requirements engineering in computer integrated construction (CIC) development4.4.2 Influence of requirements engineering upon implementation; 4.4.3 Lack of requirements engineering in the CIE developments; 4.4.4 Increasing awareness about requirements engineering in the CIE community; 4.4.5 Main criteria for requirements engineering activities; 4.4.6 Evaluation of the requirements engineering approaches; Chapter 5 Evaluation of Requirements Engineering Processes; 5.1 Introduction; 5.2 Improving the Requirements Engineering Process |
5.2.1 Traceability through product and process modelling5.2.2 Goal-oriented requirements engineering; 5.2.3 Essential and incidental complexity in requirements models; 5.2.4 The measurability of quality requirements; 5.2.5 The requirement fundamentals; 5.2.6 Identifying and involving the stakeholders; 5.2.7 Reconciling software requirements and architectures; 5.2.8 Barriers to uptake of requirements engineering; 5.3 Measuring the Success of Requirements Engineering Process; 5.4 Comparative Analysis and Evaluation; Chapter 6 Requirements Engineering Approach in the Case Projects |
6.1 Introduction |
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Sommario/riassunto |
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Efficient communication, collaboration, data exchange and sharing are crucial for the success of today's many multi-disciplinary and interdisciplinary work environments. The implementation of computer integrated environments (CIE) is increasing and the requirements engineering necessary for the development of these systems is critical. Requirements Engineering for Computer Integrated Environments in Construction provides an important source of information and advice for organizations needing bridge the gap between users and developers in the implementation of computer integrated solut |
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2. |
Record Nr. |
UNINA9911020258403321 |
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Autore |
Arrillaga J |
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Titolo |
Flexible power transmission : the HVDC options / / J. Arrillaga, Y.H. Liu, N.R. Watson |
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Pubbl/distr/stampa |
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Chichester, England ; ; Hoboken, NJ, : John Wiley, c2007 |
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ISBN |
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9786610973989 |
9781280973987 |
1280973986 |
9780470511862 |
0470511869 |
9780470511855 |
0470511850 |
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Descrizione fisica |
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1 online resource (376 p.) |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Electric power transmission |
Electric power distribution |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Flexible Power Transmission The HVDC Options; Contents; Preface; 1 Introduction; 1.1 The Conventional Power Grid; 1.1.1 Power Transfer Mechanism; 1.2 Towards a More Flexible Power Grid; 1.2.1 Power Electronics Control; 1.3 HVDC Transmission; 1.3.1 Thyristor-Based CSC Transmission; 1.3.2 VSC Transmission Based on the Integrated Gate Bipolar Transistor (IGBT); 1.3.3 Multi-terminal HVDC; 1.3.4 The Flexibility Concept Applied to HVDC; 1.4 Relative Power Carrying Capability of AC and DC Transmission Lines; 1.5 The Impact of Distributed Generation; 1.6 The Effect of Electricity Deregulation |
1.7 DiscussionReferences; 2 Semiconductor Power Devices; 2.1 Introduction; 2.2 Semiconductor Principles; 2.3 Power Semiconductor Elements; 2.3.1 The pn Rectifier; 2.3.2 The Transistor; 2.3.3 Metal-Oxide-Semiconductor Field-Effect Transistor; 2.4 Dynamic Stresses on Power Switches; 2.4.1 Rate of Change of Voltage dv/dt; 2.4.2 Rate of Change of Current di/dt; 2.4.3 Balancing Problems in Series Chains; 2.5 |
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Other Switching Issues; 2.5.1 Switching Frequency; 2.5.2 Switching Losses; 2.5.3 Soft Switching; 2.5.4 Use of Snubbers; 2.6 Thyristor-Type Power Switches; 2.6.1 The Thyristor |
2.6.2 Gate Turn-Off Thyristor (GTO)2.6.3 Insulated Gate-Commutated Thyristor (IGCT); 2.6.4 MOS Turn-Off Thyrister (MTO); 2.6.5 MOS Controlled Thyrister (MCT); 2.6.6 Emitter Turn-Off Thyristor (ETO); 2.7 Insulated Gate Bipolar Transistor (IGBT); 2.7.1 IGBT (Series) Chains; 2.8 Diodes; 2.9 Prognostic Assessment; 2.9.1 Ratings and Applicability; 2.9.2 Relative Losses; References; 3 Line-Commutated HVDC Conversion; 3.1 Introduction; 3.2 Three-Phase AC-DC Conversion [1]; 3.2.1 Basic CSC Operating Principles; 3.2.2 Effect of Delaying the Firing Instant; 3.3 The Commutation Process |
3.3.1 Analysis of the Commutation Circuit3.4 Rectifier Operation; 3.5 Inverter Operation; 3.6 Power Factor and Reactive Power; 3.7 Characteristic Harmonics [3]; 3.7.1 DC Side Harmonics; 3.7.2 AC Side Harmonics; 3.8 Multi-Pulse Conversion; 3.8.1 Transformer Phase Shifting; 3.8.2 DC Ripple Reinjection [5]; 3.9 Uncharacteristic Harmonics and Interharmonics; 3.9.1 Imperfect AC Source; 3.9.2 DC Modulation; 3.9.3 Control System Imperfections; 3.9.4 Firing Asymmetry; 3.9.5 Magnification of Low-Order Harmonics; 3.10 Harmonic Reduction by Filters; 3.10.1 AC Side Filters; 3.10.2 DC Side Filters |
3.11 Frequency Cross-Modulation Across the LCC3.12 Summary; References; 4 Self-Commutating Conversion; 4.1 Introduction; 4.2 Voltage Source Conversion; 4.2.1 VSC Operating Principles; 4.2.2 Converter Components; 4.2.3 The Three-Phase VSC; 4.3 Comparison of LCC and VSC; 4.4 Current Source Conversion; 4.4.1 Analysis of the CSC Waveforms [2]; 4.5 The Reinjection Concept with Self-Commutation; 4.5.1 Application to VSC; 4.5.2 Application to CSC; 4.6 Discussion; References; 5 Pulse Width Modulation; 5.1 Introduction; 5.2 PWM Operating Principles; 5.3 Selective Harmonic Cancellation |
5.4 Sinusoidal (Carrier-Based) PWM |
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Sommario/riassunto |
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The development of power semiconductors with greater ratings and improved characteristics has meant that the power industry has become more willing to develop new converter configurations. These new configurations take advantage of the higher controllability and switching frequencies of the new devices. The next few years will decide which of the proposed technologies will dominate future power transmission systems. Flexible Power Transmission is a comprehensive guide to the high voltage direct current (HVDC) options available, helping the reader to make informed decisions for desi |
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