Spectrum
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| Author | : Klaus Hentschel |
| Publisher | : |
| Total Pages | : 596 |
| Release | : 2002 |
| Genre | : Research |
| ISBN | : 9780198509530 |
Ever since the boom of spectrum analysis in the 1860s, spectroscopy has become one of the most fruitful research technologies in analytic chemistry, physics, astronomy, and other sciences. This book is the first in-depth study of the ways in which various types of spectra, especially the sun's Fraunhofer lines, have been recorded, displayed, and interpreted. The book assesses the virtues and pitfalls of various types of depictions, including hand sketches, woodcuts, engravings, lithographs and, from the late 1870s onwards, photomechanical reproductions. The material of a 19th-century engraver or lithographer, the daily research practice of a spectroscopist in the laboratory, or a student's use of spectrum posters in the classroom, all are looked at and documented here. For pioneers of photography such as John Herschel or Hermann Wilhelm Vogel, the spectrum even served as a prime test object for gauging the color sensitivity of their processes. This is a broad, contextual portrayal of the visual culture of spectroscopy in the 19th and early 20th centuries. The illustrations are not confined to spectra--they show instruments, laboratories, people at work, and plates of printing manuals. The result is a multifacetted description, focusing on the period from Fraunhofer up to the beginning of Bohr's quantum theory. A great deal of new and fascinating material from two dozen archives has been included. A must for anyone interested in the history of modern science or in research practice using visual representations.
| Author | : |
| Publisher | : |
| Total Pages | : 40 |
| Release | : 2007-09 |
| Genre | : |
| ISBN | : |
Science Spectrum hightlights the scientific achievements of Hispanics, Asians, Native Americans, Blacks and other U.S. minorities and has as its goal to increase the number of students among underrepresented groups who pursue careers in science.
| Author | : Henry Enfield Roscoe |
| Publisher | : |
| Total Pages | : 402 |
| Release | : 1869 |
| Genre | : Spectrum analysis |
| ISBN | : |
| Author | : Kieran D. O'Malley |
| Publisher | : Nova Publishers |
| Total Pages | : 282 |
| Release | : 2007 |
| Genre | : Family & Relationships |
| ISBN | : 9781594545733 |
This multi-author book will discuss the history and clinical presentation of Foetal Alcohol Spectrum Disorders(FASD) i.e Fetal Alcohol Syndrome (FAS) and Alcohol Related Neurodevelopmental Disorder (ARND). These developmental neuropsychiatric disorders result from prenatal exposure to alcohol during any gestational period of pregnancy. The book will particularly address the co-occurring presence of ADHD in patients with FASD. ADHD is the most frequent neuropsychiatric presentation of FASD throughout the lifespan and it is particularly difficult to manage because the underlying pathophysiology is related to prenatal neurotoxic brain injury. Although prenatal alcohol exposure , and the resulting FASD, is recognised as the commonest preventable cause of intellectual disability, many clinicians and educators are not aware that 75 to 80% of the patients with FASD have I.Q.s over 70. Thus, the neuropsychiatric presentation of FASD can often be unrecognised or misunderstood. FASD are the true clinical ' masqueraders' and ADHD is their most likely disguise! The authors are all experienced professionals from a wide range of disciplines working throughout the USA and Canada. They have been involved in the diagnosis, research and management of FASD for many years and this book will bring their collective knowledge regarding management from infancy to adulthood to an inter-professional audience.
| Author | : Mark L. Goldstein |
| Publisher | : DIANE Publishing |
| Total Pages | : 77 |
| Release | : 2011-08 |
| Genre | : Technology & Engineering |
| ISBN | : 1437985874 |
Radio frequency spectrum enables vital wireless communications services used by the federal gov¿t., businesses, and consumers. Spectrum capacity is necessary for wireless broadband (high-speed Internet access) and broadband deployment will boost the nation's capabilities in many important areas. As the demand for spectrum continues to increase, there is concern about adequate access to meet future needs. This report examines: (1) how the Nat. Telecomm. and Info. Admin. (NTIA) is managing spectrum needs of federal agencies; (2) how federal agencies are using and managing assigned spectrum; and (3) what steps NTIA has taken to meet recent initiatives aimed at making spectrum available for broadband. Illus. This is a print on demand report.
| Author | : Changyan Yi |
| Publisher | : Springer |
| Total Pages | : 111 |
| Release | : 2016-03-08 |
| Genre | : Technology & Engineering |
| ISBN | : 3319296914 |
This brief focuses on the current research on mechanism design for dynamic spectrum sharing in cognitive radio (CR) networks. Along with a review of CR architectures and characteristics, this brief presents the motivations, significances and unique challenges of implementing algorithmic mechanism design for encouraging both primary spectrum owners and secondary spectrum users to participate in dynamic spectrum sharing. The brief then focuses on recent advances in mechanism design in CR networks. With an emphasis on dealing with the uncertain spectrum availabilities, mechanisms based on spectrum recall, two-stage spectrum sharing and online spectrum allocation are introduced with the support of theoretic analyses and numerical illustrations. The brief concludes with a discussion of potential research directions and interests, which will motivate further studies on mechanism design for wireless communications. This brief is concise and approachable for researchers, professionals and advanced-level students in wireless communications and networks.
| Author | : Constantinos B. Papadias |
| Publisher | : John Wiley & Sons |
| Total Pages | : 460 |
| Release | : 2020-03-13 |
| Genre | : Technology & Engineering |
| ISBN | : 1119551471 |
Combines the latest trends in spectrum sharing, both from a research and a standards/regulation/experimental standpoint Written by noted professionals from academia, industry, and research labs, this unique book provides a comprehensive treatment of the principles and architectures for spectrum sharing in order to help with the existing and future spectrum crunch issues. It presents readers with the most current standardization trends, including CEPT / CEE, eLSA, CBRS, MulteFire, LTE-Unlicensed (LTE-U), LTE WLAN integration with Internet Protocol security tunnel (LWIP), and LTE/Wi-Fi aggregation (LWA), and offers substantial trials and experimental results, as well as system-level performance evaluation results. The book also includes a chapter focusing on spectrum policy reinforcement and another on the economics of spectrum sharing. Beginning with the historic form of cognitive radio, Spectrum Sharing: The Next Frontier in Wireless Networks continues with current standardized forms of spectrum sharing, and reviews all of the technical ingredients that may arise in spectrum sharing approaches. It also looks at policy and implementation aspects and ponders the future of the field. White spaces and data base-assisted spectrum sharing are discussed, as well as the licensed shared access approach and cooperative communication techniques. The book also covers reciprocity-based beam forming techniques for spectrum sharing in MIMO networks; resource allocation for shared spectrum networks; large scale wireless spectrum monitoring; and much more. Contains all the latest standardization trends, such as CEPT / ECC, eLSA, CBRS, MulteFire, LTE-Unlicensed (LTE-U), LTE WLAN integration with Internet Protocol security tunnel (LWIP) and LTE/Wi-Fi aggregation (LWA) Presents a number of emerging technologies for future spectrum sharing (collaborative sensing, cooperative communication, reciprocity-based beamforming, etc.), as well as novel spectrum sharing paradigms (e.g. in full duplex and radar systems) Includes substantial trials and experimental results, as well as system-level performance evaluation results Contains a dedicated chapter on spectrum policy reinforcement and one on the economics of spectrum sharing Edited by experts in the field, and featuring contributions by respected professionals in the field world wide Spectrum Sharing: The Next Frontier in Wireless Networks is highly recommended for graduate students and researchers working in the areas of wireless communications and signal processing engineering. It would also benefit radio communications engineers and practitioners.
| Author | : Geoffrey Myers |
| Publisher | : LSE Press |
| Total Pages | : 314 |
| Release | : 2023-02-15 |
| Genre | : Business & Economics |
| ISBN | : 1911712039 |
Access to the radio spectrum is vital for modern digital communication. It is an essential component for smartphone capabilities, the Cloud, the Internet of Things, autonomous vehicles, and multiple other new technologies. Governments use spectrum auctions to decide which companies should use what parts of the radio spectrum. Successful auctions can fuel rapid innovation in products and services, unlock substantial economic benefits, build comparative advantage across all regions, and create billions of dollars of government revenues. Poor auction strategies can leave bandwidth unsold and delay innovation, sell national assets to firms too cheaply, or create uncompetitive markets with high mobile prices and patchy coverage that stifles economic growth. Corporate bidders regularly complain that auctions raise their costs, while government critics argue that insufficient revenues are raised. The cross-national record shows many examples of both highly successful auctions and miserable failures. Drawing on experience from the UK and other countries, senior regulator Geoffrey Myers explains how to optimise the regulatory design of auctions, from initial planning to final implementation. Spectrum Auctions offers unrivalled expertise for regulators and economists engaged in practical auction design or company executives planning bidding strategies. For applied economists, teachers, and advanced students this book provides unrivalled insights in market design and public management. Providing clear analytical frameworks, case studies of auctions, and stage-by-stage advice, it is essential reading for anyone interested in designing public-interested and successful spectrum auctions.
| Author | : George F. Elmasry |
| Publisher | : John Wiley & Sons |
| Total Pages | : 752 |
| Release | : 2020-08-24 |
| Genre | : Technology & Engineering |
| ISBN | : 1119573777 |
Optimize your dynamic spectrum access approach using the latest applications and techniques Dynamic Spectrum Access Decisions: Local, Distributed, Centralized and Hybrid Designs prepares engineers to build optimum communications systems by describing at the outset what type of spectrum sensing capabilities are needed. Meant for anyone who has a basic understanding of wireless communications and networks and an interest in the physical and MAC layers of communication systems, this book has a tremendous range of civilian and military applications. Dynamic Spectrum Access Decisions provides fulsome discussions of cognitive radios and networks, but also DSA technologies that operate outside the context of cognitive radios. DSA has applications in: Licensed spectrum bands Unlicensed spectrum bands Civilian communications Military communications Consisting of a set of techniques derived from network information theory and game theory, DSA improves the performance of communications networks. This book addresses advanced topics in this area and assumes basic knowledge of wireless communications.
| Author | : Larry Coyne |
| Publisher | : IBM Redbooks |
| Total Pages | : 362 |
| Release | : 2019-04-19 |
| Genre | : Computers |
| ISBN | : 0738457663 |
Note: This is a republication of IBM Spectrum Archive Enterprise Edition V1.2.6: Installation and Configuration Guide with new book number SG24-8445 to keep the content available on the Internet along with the recent publication IBM Spectrum Archive Enterprise Edition V1.3.0: Installation and Configuration Guide, SG24-8333. This IBM® Redbooks® publication helps you with the planning, installation, and configuration of the new IBM SpectrumTM Archive V1.2.6 for the IBM TS3310, IBM TS3500, IBM TS4300, and IBM TS4500 tape libraries. IBM Spectrum ArchiveTM EE enables the use of the LTFS for the policy management of tape as a storage tier in an IBM Spectrum ScaleTM based environment. It helps encourage the use of tape as a critical tier in the storage environment. This is the sixth edition of IBM Spectrum Archive Installation and Configuration Guide. IBM Spectrum Archive EE can run any application that is designed for disk files on a physical tape media. IBM Spectrum Archive EE supports the IBM Linear Tape-Open (LTO) Ultrium 8, 7, 6, and 5 tape drives in IBM TS3310, TS3500, TS4300, and TS4500 tape libraries. In addition, IBM TS1155, TS1150, and TS1140 tape drives are supported in TS3500 and TS4500 tape library configurations. IBM Spectrum Archive EE can play a major role in reducing the cost of storage for data that does not need the access performance of primary disk. The use of IBM Spectrum Archive EE to replace disks with physical tape in tier 2 and tier 3 storage can improve data access over other storage solutions because it improves efficiency and streamlines management for files on tape. IBM Spectrum Archive EE simplifies the use of tape by making it transparent to the user and manageable by the administrator under a single infrastructure. This publication is intended for anyone who wants to understand more about IBM Spectrum Archive EE planning and implementation. This book is suitable for IBM clients, IBM Business Partners, IBM specialist sales representatives, and technical specialists.
