Architectures for wireless sensor networks

The vision of ubiquitous computing requires the development of devices and technologies that can be pervasive without being intrusive. The basic component of such a smart environment will be a small node with sensing and wireless communications capabilities, able to organize itself flexibly into a network for data collection and delivery. Building such a sensor network presents many significant challenges, especially at the architectural, protocol, and operating system level. Although sensor nodes might be equipped with a power supply or energy scavenging means and an embedded processor that makes them autonomous and self-aware, their functionality and capabilities will be very limited. Therefore, collaboration between nodes is essential to deliver smart services in a ubiquitous setting. New algorithms for networking and distributed collaboration need to be developed. These algorithms will be the key for building self-organizing and collaborative sensor networks that show emergent behavior and can operate in a challenging environment where nodes move, fail, and energy is a scarce resource. The question that rises is how to organize the internal software and hardware components in a manner thatwill allowthem towork properly and be able to adapt dynamically to new environments, requirements, and applications. At the same time the solution should be general enough to be suited for as many applications as possible. Architecture definition also includes, at the higher level, a global view of the whole network. The topology, placement of base stations, beacons, etc. is also of interest. In this chapter, we will present and analyze some of the characteristics of the architectures for wireless sensor networks. Then, we will propose a new dataflow-based architecture that allows, as a new feature, the dynamic reconfiguration of the sensor nodes software at runtime

The M\u3csub\u3er\u3c/sub\u3e-value of chloroplast coupling factor 1

The Mr of spinach chloroplast coupling factor 1 has been determined by sedimentation equilibrium and by light scattering to be 400 000 ± 24 600 and 407 000 ± 20 000, respectively. These values differ substantially from that obtained previously (325 000) and are consistent with an α3β3γδε{lunate} subunit stoichiometry. © 1983

Industrial communication technology handbook

Featuring contributions from major technology vendors, industry consortia, and government and private research establishments, the Industrial Communication Technology Handbook, Second Edition provides comprehensive and authoritative coverage of wire- and wireless-based specialized communication networks used in plant and factory automation, automotive applications, avionics, building automation, energy and power systems, train applications, and more.New to the Second Edition:46 brand-new chapters and 21 substantially revised chaptersInclusion of the latest, most significant developments in sp

Embedded systems handbook / edited by Richard Zurawski.

Includes bibliographical references and indexes.Book fair 2012.2 v. :Considered a standard industry resource, the Embedded Systems Handbook provided researchers and technicians with the authoritative information needed to launch a wealth of diverse applications, including those in automotive electronics, industrial automated systems, and building automation and control. Now a new resource is required to report on current developments and provide a technical reference for those looking to move the field forward yet again. Divided into two volumes to accommodate this growth, the Embedded Systems Handbook, Second Edition presents a comprehensive view on this area of computer engineering with a currently appropriate emphasis on developments in networking and applications. Those experts directly involved in the creation and evolution of the ideas and technologies presented offer tutorials, research surveys, and technology overviews that explore cutting-edge developments and deployments and identify potential trends. This first self-contained volume of the handbook, Embedded Systems Design and Verification, is divided into three sections. It begins with a brief introduction to embedded systems design and verification. It then provides a comprehensive overview of embedded processors and various aspects of system-on-chip and FPGA, as well as solutions to design challenges. The final section explores power-aware embedded computing, design issues specific to secure embedded systems, and web services for embedded devices

Embedded systems handbook /

Embedded systems proliferate in everyday applications and are of major importance in industrial settings. The first comprehensive book on the subject, this timely handbook emphasizes emerging trends and technologies, but it also provides a solid foundation for understanding these new developments. Contributions from some of the field's leading authorities cover all aspects of embedded systems from both the hardware and software perspectives. Topics include real-time embedded systems, security, system-on-chip and network-on-chip design, and networked embedded systems. The final section explores applications in automotive, industrial automation, and intelligent sensor applications.Includes bibliographical references and indexes.Embedded systems proliferate in everyday applications and are of major importance in industrial settings. The first comprehensive book on the subject, this timely handbook emphasizes emerging trends and technologies, but it also provides a solid foundation for understanding these new developments. Contributions from some of the field's leading authorities cover all aspects of embedded systems from both the hardware and software perspectives. Topics include real-time embedded systems, security, system-on-chip and network-on-chip design, and networked embedded systems. The final section explores applications in automotive, industrial automation, and intelligent sensor applications

PROTEINASES ASSOCIATED WITH BOVINE PLASMA ALBUMIN: FURTHER CHARACTERIZATION AND PROPERTIES OF THE ALBUMIN DIGESTION PRODUCT.

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Introduction to wireles sensor networks

Wireless Sensor Networks have gained a lot of attention lately. Due to technological advances, building small-sized, energy-efficient reliable devices, capable of communicating with each other and organizing themselves in ad hoc networks have become possible. These devices have brought a new perspective to the world of computers as we know it: they can be embedded into the environment in such a way that the user is unaware of them. There is no need for reconfiguration and maintenance as the network organizes itself to inform the users of the most relevant events detected or to assist them in their activity. This chapter will give a brief overview of the whole area, by introducing the wireless sensor networks concepts to the reader. Then, a number of applications aswell as possible typical scenarioswill be presented in order to better understand the field of application of this new emerging technology. Up to this moment, several main areas of applications have been identified. New areas of applications are still to be discovered as the research and products grow more mature. Wireless sensor networks bring lots of challenges and often contradictory demands from the design point of view. The last part of the chapter will be dedicated to highlighting the main directions of research involved in this field. It will serve as a brief introduction to the problems to be described in the following chapters of the book