Design and Implementation of a Distributed Scheduling Algorithm Using Period Inflation for Sensor Networks PDF Download

Author: Bhushan Bhatt
Publisher:
ISBN:
Category :
Languages : en
Pages : 41

View

Book Description
Keywords: period inflation, adaptive algorithm.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
Wireless Sensor Networks (WSNs) are fast emerging as a new and ubiquitous networking arena which will enables many new applications and pervades many old ones. One of the motivations for the development of WSNs is their ability to be deployed in any environment in a comparatively ad-hoc manner. The most important challenge faced by WSNs is battery-limited lifetime of the network. Physically replacing batteries is infeasible in most real-life deployments of WSNs. It has been demonstrated both theoretically and practically that intelligent operation of WSN nodes can improve network lifetime. For example, turning off wireless transceivers at WSN nodes, minimizing idle listening, can increase battery lifetimes by large factors, especially in many passive data sensing applications where the sense-receive-transmit cycle of the sensors is periodic. In particular, we focus on some previous work in which an adaptive scheduling algorithm was proposed for this purpose, under unpredictable but small clock drift (so called quasi-periodic traffic). While this approach can adapt effectively to unknown transmission periods and unknown changes in transmission periods, the fundamental problem remains: a few nodes close to the base station deplete their batteries sooner than the rest resulting in early network death. Further, this phenomenon reduces the effectiveness of the method even more when (a) the periods of the various nodes are very disparate, and (b) when nodes artificially reduce their periods to maintain end-to-end delay bounds. In this thesis, we advance a new technique called "period inflation", by which the nodes of a WSN can cooperatively create a schedule in which nodes close to the base station have higher periods. We investigate the performance of the inflated and non-inflated cases for scenarios where all nodes have similar periods as well as when some nodes have very disparate periods, and also under bounded delay conditions. Numerical results show that the new tec.

Author: Sarnath Ramnath
Publisher: Springer Science & Business Media
ISBN: 1849965226
Category : Computers
Languages : en
Pages : 485

View

Book Description
Object-oriented analysis and design (OOAD) has over the years, become a vast field, encompassing such diverse topics as design process and principles, documentation tools, refactoring, and design and architectural patterns. For most students the learning experience is incomplete without implementation. This new textbook provides a comprehensive introduction to OOAD. The salient points of its coverage are: • A sound footing on object-oriented concepts such as classes, objects, interfaces, inheritance, polymorphism, dynamic linking, etc. • A good introduction to the stage of requirements analysis. • Use of UML to document user requirements and design. • An extensive treatment of the design process. • Coverage of implementation issues. • Appropriate use of design and architectural patterns. • Introduction to the art and craft of refactoring. • Pointers to resources that further the reader’s knowledge. All the main case-studies used for this book have been implemented by the authors using Java. The text is liberally peppered with snippets of code, which are short and fairly self-explanatory and easy to read. Familiarity with a Java-like syntax and a broad understanding of the structure of Java would be helpful in using the book to its full potential.

Author: Asian Development Bank
Publisher: Asian Development Bank
ISBN: 9292614711
Category : Technology & Engineering
Languages : en
Pages : 123

View

Book Description
This handbook serves as a guide to deploying battery energy storage technologies, specifically for distributed energy resources and flexibility resources. Battery energy storage technology is the most promising, rapidly developed technology as it provides higher efficiency and ease of control. With energy transition through decarbonization and decentralization, energy storage plays a significant role to enhance grid efficiency by alleviating volatility from demand and supply. Energy storage also contributes to the grid integration of renewable energy and promotion of microgrid.

Author: Gevork B. Gharehpetian
Publisher: Butterworth-Heinemann
ISBN: 012804263X
Category : Technology & Engineering
Languages : en
Pages : 590

View

Book Description
Approx.580 pagesApprox.580 pages

Author: David A. Patterson
Publisher: Morgan Kaufmann
ISBN: 0128122765
Category : Computers
Languages : en
Pages : 700

View

Book Description
The new RISC-V Edition of Computer Organization and Design features the RISC-V open source instruction set architecture, the first open source architecture designed to be used in modern computing environments such as cloud computing, mobile devices, and other embedded systems. With the post-PC era now upon us, Computer Organization and Design moves forward to explore this generational change with examples, exercises, and material highlighting the emergence of mobile computing and the Cloud. Updated content featuring tablet computers, Cloud infrastructure, and the x86 (cloud computing) and ARM (mobile computing devices) architectures is included. An online companion Web site provides advanced content for further study, appendices, glossary, references, and recommended reading. - Features RISC-V, the first such architecture designed to be used in modern computing environments, such as cloud computing, mobile devices, and other embedded systems - Includes relevant examples, exercises, and material highlighting the emergence of mobile computing and the cloud

Author:
Publisher: DIANE Publishing
ISBN: 1428901949
Category : Air quality
Languages : en
Pages : 171

View

Book Description

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1032

View

Book Description

Author: Gavin Towler
Publisher: Elsevier
ISBN: 0080966608
Category : Technology & Engineering
Languages : en
Pages : 1321

View

Book Description
Chemical Engineering Design, Second Edition, deals with the application of chemical engineering principles to the design of chemical processes and equipment. Revised throughout, this edition has been specifically developed for the U.S. market. It provides the latest US codes and standards, including API, ASME and ISA design codes and ANSI standards. It contains new discussions of conceptual plant design, flowsheet development, and revamp design; extended coverage of capital cost estimation, process costing, and economics; and new chapters on equipment selection, reactor design, and solids handling processes. A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data, and Excel spreadsheet calculations, plus over 150 Patent References for downloading from the companion website. Extensive instructor resources, including 1170 lecture slides and a fully worked solutions manual are available to adopting instructors. This text is designed for chemical and biochemical engineering students (senior undergraduate year, plus appropriate for capstone design courses where taken, plus graduates) and lecturers/tutors, and professionals in industry (chemical process, biochemical, pharmaceutical, petrochemical sectors). New to this edition: - Revised organization into Part I: Process Design, and Part II: Plant Design. The broad themes of Part I are flowsheet development, economic analysis, safety and environmental impact and optimization. Part II contains chapters on equipment design and selection that can be used as supplements to a lecture course or as essential references for students or practicing engineers working on design projects. - New discussion of conceptual plant design, flowsheet development and revamp design - Significantly increased coverage of capital cost estimation, process costing and economics - New chapters on equipment selection, reactor design and solids handling processes - New sections on fermentation, adsorption, membrane separations, ion exchange and chromatography - Increased coverage of batch processing, food, pharmaceutical and biological processes - All equipment chapters in Part II revised and updated with current information - Updated throughout for latest US codes and standards, including API, ASME and ISA design codes and ANSI standards - Additional worked examples and homework problems - The most complete and up to date coverage of equipment selection - 108 realistic commercial design projects from diverse industries - A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data and Excel spreadsheet calculations plus over 150 Patent References, for downloading from the companion website - Extensive instructor resources: 1170 lecture slides plus fully worked solutions manual available to adopting instructors

Author: National Intelligence Council
Publisher: Cosimo Reports
ISBN: 9781646794973
Category :
Languages : en
Pages : 158

View

Book Description
"The ongoing COVID-19 pandemic marks the most significant, singular global disruption since World War II, with health, economic, political, and security implications that will ripple for years to come." -Global Trends 2040 (2021) Global Trends 2040-A More Contested World (2021), released by the US National Intelligence Council, is the latest report in its series of reports starting in 1997 about megatrends and the world's future. This report, strongly influenced by the COVID-19 pandemic, paints a bleak picture of the future and describes a contested, fragmented and turbulent world. It specifically discusses the four main trends that will shape tomorrow's world: - Demographics-by 2040, 1.4 billion people will be added mostly in Africa and South Asia. - Economics-increased government debt and concentrated economic power will escalate problems for the poor and middleclass. - Climate-a hotter world will increase water, food, and health insecurity. - Technology-the emergence of new technologies could both solve and cause problems for human life. Students of trends, policymakers, entrepreneurs, academics, journalists and anyone eager for a glimpse into the next decades, will find this report, with colored graphs, essential reading.