The American national state and the early West / / William H. Bergmann [[electronic resource]]

• Record Nr.: UNINA9910779479103321
• Autore: Bergmann William H. <1975->
• Pubbl/distr/stampa: Cambridge : , : Cambridge University Press, , 2012
• ISBN: 1-139-88857-9; 1-139-57943-6; 1-139-57341-1; 1-139-56905-8; 1-139-05838-X; 1-139-57261-X; 1-139-57086-2; 1-283-63862-2; 1-139-56995-3
• Descrizione fisica: 1 online resource (x, 288 pages) : digital, PDF file(s)
• Disciplina: 970.01
• Soggetti: Indians of North America - Northwest, Old - Government relations; Indians of North America - Ohio River Valley - Government relations; United States Territorial expansion History 18th century; United States Territorial expansion History 19th century; United States Territorial expansion Government policy; Northwest, Old Economic policy; Ohio River Valley Economic policy
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Title from publisher's bibliographic system (viewed on 05 Oct 2015).
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Property war -- Martial economies -- A bordered land -- Webs of commerce -- The national state in Indian country -- Bureaucratic expansionism.
• Sommario/riassunto: This book challenges the widely held myth that the American national state was weak in the early days of the republic. William H. Bergmann reveals how the federal government used its fiscal and military powers, as well as bureaucratic authority, to enhance land acquisitions, promote ; infrastructure development and facilitate commerce and communication in the early trans-Appalachian West. Energetic federal state-building efforts prior to 1815 grew from national state security interests as Native Americans and British imperial designs threatened to unravel the republic. White Westerners and Western state governments partnered with the federal government to encourage commercial growth and emigration, to transform the borderland into a bordered land. Taking a regional approach, this work synthesizes the literatures of social history, political science and economic history to provide a new narrative of American expansionism, one that takes into account the unique historical circumstances in the Ohio Valley and the southern Great Lakes.

Circular Array-Based Radio Frequency OAM Communications / / by Rui Chen, Wen-Xuan Long, Nan Cheng

• Record Nr.: UNINA9910768447903321
• Autore: Chen Rui
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2024
• ISBN: 3-031-37589-0
• Edizione: [1st ed. 2024.]
• Descrizione fisica: 1 online resource (256 pages)
• Collana: Wireless Networks, , 2366-1445
• Disciplina: 621.384
• Soggetti: Telecommunication; Wireless communication systems; Mobile communication systems; Computational intelligence; Communications Engineering, Networks; Wireless and Mobile Communication; Computational Intelligence
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Introduction -- Overview of OAM technology in 5G and Beyond Communications -- Circular Array-based Radio Frequency Point-to-; point OAM Communications -- Point-to-point OAM-MIMO Communications -- Circular Array-based Radio Frequency Point-to-multipoint OAM Wireless Backhaul -- Hybrid Circular Array and Luneberg Lens for Long-Distance OAM Wireless Communications -- Circular Array-based Joint OAM Radar-Communication Systems -- Future Research Directions and Applications -- Conclusion.
• Sommario/riassunto: This book presents the modeling and transmission theory of RF OAM communications. The book features the UCA-based RF point-to-point OAM communication system, the UCA-based RF point-to-multipoint OAM wireless backhaul network, the HCCL structure for long-distance OAM transmissions, and the UCA-based joint OAM RadCom scheme. For the UCA-based RF point-to-point OAM communication system, a 2-D ESPRIT-based distance and AoA estimation method is first introduced, followed by an OAM reception scheme including the hybrid mechanical and electronic beam steering with the estimated AoA and the amplitude detection with the estimated distance. The proposed RF OAM communication scheme is extended to the RF OAM-MIMO system equipped with UCCAs. For the UCA-based RF point-to-multipoint OAM wireless backhaul network, an OAM-based multi-user distance and AoA estimation method is introduced, followed by a multi-user OAM preprocessing scheme. At last, the proposed methods are extended to the downlink multi-user OAM-MIMO wireless backhaul system equipped with UCCAs. Moreover, a novel HCCL structure is introduced to realize long-distance OAM transmission. For the UCA-based joint OAM RadCom scheme, an OAM-based 3-D super-resolution position estimation and rotation velocity detection method is introduced, and then the PCRB of the OAM-based estimates and the transmission rate of the integrated system are derived and analyzed. To achieve the best performance trade-off, the transmitted integrated OAM beams is optimized by means of an exhaustive search method. Finally, this book discusses future research directions to inspire further investigation in the field of RF OAM communications from different perspectives. Presents comprehensive knowledge of the modeling and transmission theory of RF OAM communications; Features analysis of UCA-based RF point-to-point OAM communication systems and the UCA-based RF point-to-multipoint OAM wireless backhaul network; Includes research directions to inspire further investigation in the field of RF OAM communications from different perspectives.