LEADER 03564oam 2200481 450 001 9910483807303321 005 20210528192734.0 010 $a981-15-9089-3 024 7 $a10.1007/978-981-15-9089-4 035 $a(CKB)4100000011631484 035 $a(DE-He213)978-981-15-9089-4 035 $a(MiAaPQ)EBC6420710 035 $a(PPN)252513312 035 $a(EXLCZ)994100000011631484 100 $a20210528d2021 uy 0 101 0 $aeng 135 $aurnn|008mamaa 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aOmnidirectional slots antenna /$fJunping Geng 205 $a1st ed. 2021. 210 1$aGateway East, Singapore :$cSpringer,$d[2021] 210 4$d©2021 215 $a1 online resource (XXV, 170 p. 121 illus., 104 illus. in color.) 311 $a981-15-9088-5 327 $aIntroduction -- Basic Theory of Omnidirectional Antenna and Slot Array -- Principles of Omnidirectional CP Slot Array Antenna -- Principles of Omnidirectional Dual-CP Slot Array Antenna -- Dual CP Polarization Diversity and Space Diversity Antennas Enablaed by a Compact T-shaped Feed Structure -- Circular Truncated Cone Slot Antenna with Circular Polarized Conical Beam -- Half-space Covered Antenna for Air-ground Communication -- A Compact Reconfigurable Coaxial Slot Antenna -- The Omnidirectional/Directional Switchable Antenna based on the Curved Microstrip Antenna with Defected Ground Structure. 330 $aOmnidirectional antenna with high gain, low profile, vertical polarization, even CP polarization is very difficult to design, although it is from the dipole. In this book, a novel idea that the running wave in the coaxial wire is disturbed by the orthogonal slot array on the cylindrical metal shell is introduced, which radiates the CP wave in omni-direction. When feeding on two ends of the coaxial wire respectively, there will appear left hand circularly polarized (LHCP) omnidirectional radiation or right hand circularly polarized (RHCP) omnidirectional radiation. By introducing the T-shaped feed structure, the coaxial wire with slot array can conveniently produce the LHCP and RHCP radiation diversity with one end feeding. In the further, combining with the directional antenna, it will generate the pattern diversity in the half-sphere space. The antenna of the coaxial wire with slot array can further transform into conical CP beam antenna if the coaxial wire becomes into a conical frustum. By introducing the PIN diode into the slot, the antenna of the coaxial wire with slot array can radiate the reconfigurable directional beam by switching the states of the PIN diodes. By introducing a novel switchable microwave circuit, the omnidirectional /directional pattern switchable antenna can be realized easily. This book proposes a continues method to develop the potentialities of the omnidirectional antenna. And the readers can study the method or ideas of the omnidirectional antenna, even graft the CP or diversity methods to other antennae. 606 $aAntenna radiation patterns 606 $aElectromagnetic waves$xPolarization 606 $aAntennas (Electronics) 615 0$aAntenna radiation patterns. 615 0$aElectromagnetic waves$xPolarization. 615 0$aAntennas (Electronics) 676 $a621.3824 700 $aGeng$b Junping$01077550 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bUtOrBLW 906 $aBOOK 912 $a9910483807303321 996 $aOmnidirectional slots antenna$92848018 997 $aUNINA LEADER 01401nam 2200385 450 001 9910280927003321 005 20230814223052.0 010 $a1-5386-0661-5 035 $a(CKB)4100000005061351 035 $a(WaSeSS)IndRDA00121552 035 $a(EXLCZ)994100000005061351 100 $a20200406d2018 uy 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$a2018 3rd International Conference on Intelligent Green Building and Smart Grid $e22-25 April 2018, Yi-Lan, Taiwan /$fInstitute of Electrical and Electronics Engineers 210 1$aPiscataway, New Jersey :$cInstitute of Electrical and Electronics Engineers,$d2018. 215 $a1 online resource (69 pages) 311 $a1-5386-0662-3 606 $aSmart power grids$vCongresses 606 $aIntelligent buildings$vCongresses 606 $aSustainable development$xData processing$vCongresses 615 0$aSmart power grids 615 0$aIntelligent buildings 615 0$aSustainable development$xData processing 676 $a621.31 712 02$aInstitute of Electrical and Electronics Engineers, 801 0$bWaSeSS 801 1$bWaSeSS 906 $aPROCEEDING 912 $a9910280927003321 996 $a2018 3rd International Conference on Intelligent Green Building and Smart Grid$92520726 997 $aUNINA LEADER 03701nam 2200733 a 450 001 9910967985403321 005 20240516052113.0 010 $a9786613150684 010 $a9781283150682 010 $a1283150689 010 $a9780226101811 010 $a0226101819 024 7 $a10.7208/9780226101811 035 $a(CKB)2560000000073262 035 $a(EBL)688816 035 $a(OCoLC)721195316 035 $a(SSID)ssj0000522189 035 $a(PQKBManifestationID)11345562 035 $a(PQKBTitleCode)TC0000522189 035 $a(PQKBWorkID)10527878 035 $a(PQKB)11329104 035 $a(StDuBDS)EDZ0000113824 035 $a(MiAaPQ)EBC688816 035 $a(DE-B1597)524533 035 $a(OCoLC)1135583369 035 $a(DE-B1597)9780226101811 035 $a(Au-PeEL)EBL688816 035 $a(CaPaEBR)ebr10468512 035 $a(CaONFJC)MIL315068 035 $a(Perlego)1850508 035 $a(EXLCZ)992560000000073262 100 $a20020819d2003 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aEcological niches $elinking classical and contemporary approaches /$fJonathan M. Chase and Mathew A. Leibold 205 $a1st ed. 210 $aChicago $cUniversity of Chicago Press$dc2003 215 $a1 online resource (224 p.) 225 1 $aInterspecific interactions 300 $aDescription based upon print version of record. 311 08$a9780226101804 311 08$a0226101800 311 08$a9780226101798 311 08$a0226101797 320 $aIncludes bibliographical references (p. 181-205). 327 $a1. Introduction : history, context, and purpose -- 2. Revising the niche concept : definitions and mechanistic models -- 3. Comparing classical and contemporary niche theory -- 4. Designs and limitations of empirical approaches to the niche -- 5. Incorporating biological complexities -- 6. Environmental variability in time and space -- 7. Species sorting in communities -- 8. Community succession, assembly, and biodiversity -- 9. Niche relations within ecosystems -- 10. The evolutionary niche -- 11. Conclusions. 330 $aWhy do species live where they live? What determines the abundance and diversity of species in a given area? What role do species play in the functioning of entire ecosystems? All of these questions share a single core concept-the ecological niche. Although the niche concept has fallen into disfavor among ecologists in recent years, Jonathan M. Chase and Mathew A. Leibold argue that the niche is an ideal tool with which to unify disparate research and theoretical approaches in contemporary ecology. Chase and Leibold define the niche as including both what an organism needs from its environment and how that organism's activities shape its environment. Drawing on the theory of consumer-resource interactions, as well as its graphical analysis, they develop a framework for understanding niches that is flexible enough to include a variety of small- and large-scale processes, from resource competition, predation, and stress to community structure, biodiversity, and ecosystem function. Chase and Leibold's synthetic approach will interest ecologists from a wide range of subdisciplines. 410 0$aInterspecific interactions. 606 $aNiche (Ecology) 615 0$aNiche (Ecology) 676 $a577.8/2 686 $aWI 3060$2rvk 700 $aChase$b Jonathan M$01809232 701 $aLeibold$b Mathew A$01809233 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910967985403321 996 $aEcological niches$94359920 997 $aUNINA