Whitfield p e (44 resultados)

hardcover. Condición: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

SC. Condición: Gut. Obr., 4?, s., in gutem Zustand, [WES6]. Deu 300g.

3051.WHITFIELD P. ET AL. 1984 MACMILLAN ILLUSTRATED ANIMAL ENCYCLOPEDIA. 600PP. ILLUSTRATED THROUGHOUT. HARD COVER WITH A DUST JACKET. OVERSIZE VOLUME. LIKE NEW CONDITION. (GNH-BASSE-191).

Condición: Good. *Price HAS BEEN REDUCED by 10% until Monday, Sept. 28 (weekend SALE item)* 255 pp., Hardcover, ex library, else text clean and binding tight. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.…

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

Soft cover. Condición: Book Very Good. 292 pages. B&W illustrations. Some light wear to spine-ends, spine & spine-junctions colour-faded o.w covers very clean. Library stamps/labels to half-title page o/w contents unmarked. Each chapter individually referenced.

Hardcover. Condición: Fine. Estado de la sobrecubierta: Very Good. Very small tear to dustjacket at top of spine and at one of the corners; previous owner's stamp on ffep.

12346 1979 FIRST EDITION 160PP. ILLUSTRATED. HARD COVER WITH A DUS TTJACKET. NEW CONDITION. OVERSIZE VOLUME STE 396.

Condición: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

hardcover. Condición: New. In shrink wrap. Looks like an interesting title.

Condición: New. pp. 254.

Paperback. Condición: Very Good. Bulletin of the American Museum of Natural History: Volume 11, Parts I-IV, 1898-1901. 500 pp. with index, contents, etc. Chipped original wrappers.

Condición: New. pp. 254 9:B&W 6 x 9 in or 229 x 152 mm Case Laminate on Creme w/Gloss Lam.

Condición: New. In English.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condición: new. Paperback. HOW DO YOU CONNECT AN ORDINARY SMARTPHONE TO A SATELLITE HUNDREDS OF KILOMETRES ABOVE EARTH-AND MAKE THE LINK ACTUALLY WORK?A smartphone was never designed to communicate directly with a spacecraft travelling at orbital velocity. Yet direct-to-device satellite connectivity is turning that seemingly impossible link into a practical communications architecture.The challenge is not simply putting a cellular radio in space. It is closing the link-despite limited handset power, small antennas, extreme Doppler, long propagation paths, fading, interference, spectrum constraints, and rapidly changing orbital geometry.Direct-to-Device Satellite Communications Handbook takes you through the complete engineering chain, from orbit and link budget to RF payload, waveform, NTN protocols, network architecture, verification, deployment, and constellation economics.WHAT YOU WILL LEARNOrbital mechanics, coverage geometry, slant range, elevation, and pass durationComplete forward- and return-link budget methodologyPropagation loss, fading, shadowing, multipath, and handset body effectsSpacecraft apertures, phased arrays, beamforming, EIRP, G/T, and RF front endsSpectrum licensing, supplemental coverage, PFD limits, and coexistence3GPP Non-Terrestrial Network architecture and protocol adaptationDoppler shift, Doppler rate, propagation delay, timing, and frequency compensationRandom access, mobility, handover, tracking areas, and beam managementWaveforms, coding, repetition, link adaptation, and low-SNR operationCapacity planning, interference management, frequency reuse, and beam hoppingGateways, feeder links, rain attenuation, site diversity, and ground infrastructureTransparent and regenerative payload architecturesMessaging, emergency communications, narrowband voice, IoT, and store-and-forward servicesChannel emulation, satellite emulation, OTA testing, and field validationSecurity, authentication, privacy, GNSS dependency, spoofing, and threat modellingPositioning, timing, ranging, and delay-tolerant networkingMaritime, aviation, vehicular, wearable, and machine-type terminalsConstellation deployment, lifetime, replenishment, reliability, and economicsComplete reference architectures, worked examples, design worksheets, and problem setsFROM ORBIT TO HANDSETThe central engineering reality is simple: THE HANDSET IS THE CONSTRAINED ELEMENT.Its limited transmit power, antenna gain, orientation, blockage, and operating environment place demanding requirements on the spacecraft, waveform, protocol, spectrum plan, and constellation.This handbook develops that relationship quantitatively-showing how orbital geometry becomes a link budget, how the link budget drives payload and waveform decisions, how those decisions affect capacity and interference, and how the resulting architecture must ultimately be verified and deployed.BUILT FOR ENGINEERSDesigned for RF, wireless, telecommunications, satellite, aerospace, 5G/6G, NTN, antenna, payload, modem, chipset, and systems engineers-as well as researchers, graduate students, network architects, satellite operators, and technical programme teams.Prior satellite experience is helpful, but not required. A foundation in electromagnetics, digital communications, and probability is sufficient to follow the engineering chain.DON'T JUST STUDY WHAT DIRECT-TO-DEVICE SATELLITE CONNECTIVITY PROMISES.UNDERSTAND THE ENGINEERING THAT MAKES IT WORK.S Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condición: new. Paperback. HOW DO YOU CONNECT AN ORDINARY SMARTPHONE TO A SATELLITE HUNDREDS OF KILOMETRES ABOVE EARTH-AND MAKE THE LINK ACTUALLY WORK?A smartphone was never designed to communicate directly with a spacecraft travelling at orbital velocity. Yet direct-to-device satellite connectivity is turning that seemingly impossible link into a practical communications architecture.The challenge is not simply putting a cellular radio in space. It is closing the link-despite limited handset power, small antennas, extreme Doppler, long propagation paths, fading, interference, spectrum constraints, and rapidly changing orbital geometry.Direct-to-Device Satellite Communications Handbook takes you through the complete engineering chain, from orbit and link budget to RF payload, waveform, NTN protocols, network architecture, verification, deployment, and constellation economics.WHAT YOU WILL LEARNOrbital mechanics, coverage geometry, slant range, elevation, and pass durationComplete forward- and return-link budget methodologyPropagation loss, fading, shadowing, multipath, and handset body effectsSpacecraft apertures, phased arrays, beamforming, EIRP, G/T, and RF front endsSpectrum licensing, supplemental coverage, PFD limits, and coexistence3GPP Non-Terrestrial Network architecture and protocol adaptationDoppler shift, Doppler rate, propagation delay, timing, and frequency compensationRandom access, mobility, handover, tracking areas, and beam managementWaveforms, coding, repetition, link adaptation, and low-SNR operationCapacity planning, interference management, frequency reuse, and beam hoppingGateways, feeder links, rain attenuation, site diversity, and ground infrastructureTransparent and regenerative payload architecturesMessaging, emergency communications, narrowband voice, IoT, and store-and-forward servicesChannel emulation, satellite emulation, OTA testing, and field validationSecurity, authentication, privacy, GNSS dependency, spoofing, and threat modellingPositioning, timing, ranging, and delay-tolerant networkingMaritime, aviation, vehicular, wearable, and machine-type terminalsConstellation deployment, lifetime, replenishment, reliability, and economicsComplete reference architectures, worked examples, design worksheets, and problem setsFROM ORBIT TO HANDSETThe central engineering reality is simple: THE HANDSET IS THE CONSTRAINED ELEMENT.Its limited transmit power, antenna gain, orientation, blockage, and operating environment place demanding requirements on the spacecraft, waveform, protocol, spectrum plan, and constellation.This handbook develops that relationship quantitatively-showing how orbital geometry becomes a link budget, how the link budget drives payload and waveform decisions, how those decisions affect capacity and interference, and how the resulting architecture must ultimately be verified and deployed.BUILT FOR ENGINEERSDesigned for RF, wireless, telecommunications, satellite, aerospace, 5G/6G, NTN, antenna, payload, modem, chipset, and systems engineers-as well as researchers, graduate students, network architects, satellite operators, and technical programme teams.Prior satellite experience is helpful, but not required. A foundation in electromagnetics, digital communications, and probability is sufficient to follow the engineering chain.DON'T JUST STUDY WHAT DIRECT-TO-DEVICE SATELLITE CONNECTIVITY PROMISES.UNDERSTAND THE ENGINEERING THAT MAKES IT WORK.</ Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability.…

Roma, Litostampa, 1958, in-4, br. editoriale, pp. 30, (2). Con 14 illustrazioni in b.n. nel t. Estratto.

Condición: New.

Condición: As New. Unread book in perfect condition.

Condición: As New. Unread book in perfect condition.

Condición: New.

Heft. Condición: Befriedigend. pp. 113-119. , 23cm Zustand: mittig geknickt, Umschlag beschriftet, gestempelt, fleckig und mit Fehlstelle, innen gut --- Inhalt: WHITFIELD,J.E. The Fayette County, Texas, Meteorite. From: American Journal of Science 36, August 1888, pp. 113-119. Presentation copy. KK-Ordner Sprache: Deutsch Gewicht in Gramm: 100. …

pp. (viii), 196; (viii), 152. Original cloth, very good copies. *LIMITED EDITION of 150 copies each, initialled by Phillimore. Forming part of Phillimore's Parish Register Series, vol. XLVI Warw. vol.II and vol.LXII Warw. vol.III.

Condición: Very Good. *Price HAS BEEN REDUCED by 10% until Monday, Sept. 28 (weekend SALE item)* 71 pp., softcover, front cover clipped at corner, else very good. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country. …

LeatherBound. Condición: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1904 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. Pages: 172 As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 172 Volume 3 Language: English.…

LeatherBound. Condición: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1904 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. Pages: 166 As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 166 Volume 1 Language: English.…

LeatherBound. Condición: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1904 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. Pages: 175 As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 175 Language: English.…

LeatherBound. Condición: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1904 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. Pages: 212 As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 212 Volume 2 Language: English.…