LEADER 08178nam 22006975 450 001 996466721203316 005 20200629162416.0 010 $a3-540-39304-8 024 7 $a10.1007/3-540-19492-4 035 $a(CKB)1000000000230769 035 $a(SSID)ssj0000320786 035 $a(PQKBManifestationID)12115888 035 $a(PQKBTitleCode)TC0000320786 035 $a(PQKBWorkID)10250304 035 $a(PQKB)11320349 035 $a(DE-He213)978-3-540-39304-7 035 $a(PPN)155203770 035 $a(EXLCZ)991000000000230769 100 $a20121227d1988 u| 0 101 0 $aeng 135 $aurnn|008mamaa 181 $ctxt 182 $cc 183 $acr 200 10$aActive Galactic Nuclei$b[electronic resource] $eProceedings of a Conference Held at the Georgia State University, Atlanta, Georgia October 28?30, 1987 /$fedited by H. Richard Miller, Paul J. Wiita 205 $a1st ed. 1988. 210 1$aBerlin, Heidelberg :$cSpringer Berlin Heidelberg :$cImprint: Springer,$d1988. 215 $a1 online resource (XI, 440 p. 25 illus.) 225 1 $aLecture Notes in Physics,$x0075-8450 ;$v307 300 $aBibliographic Level Mode of Issuance: Monograph 311 $a3-540-19492-4 327 $aEmission-line spectra and the nature of active galactic nuclei -- Emission line regions in active galactic nuclei: A unified view -- Emission-line region structure from variability studies -- UV and optical spectroscopy of NGC 5548 -- The circumnuclear environment of the nearby non-interacting Seyfert galaxies NGC 5273 and NGC 3516 -- Long-slit spectroscopy of star-burst galaxies -- Voyager far UV observations of Markarian 509 -- High resolution study of NGC 4151 -- Long-slit echelle spectrograms of Seyfert galaxy nuclei -- Double peaked broad line profiles ? edge on accretion disks or double quasar nuclei? -- OJ287 as a binary system -- Line profiles and the kinematics of the narrow-line region -- Reddening of narrow line regions -- Ultraviolet and optical spectra of broad-line radio galaxies -- Long slit CCD observations of active and normal galaxies -- Imaging spectrophotometry of ionized gas in active galaxies -- Some spectroscopic properties of mass-ejecting and radio-loud quasars -- Infrared spectroscopy of NGC 1068 -- Dust and emission-line asymmetries in active galaxies -- Spectropolarimetry and the structure of active galactic nuclei -- Spectropolarimetry of ?narrow-line Seyfert 1s? -- Evidence for thermal emission components in highly polarized quasars -- The shape of the ultraviolet continuum of quasars -- A search for IRAS AGN -- Nuclear activity in warm IRAS galaxies -- An optical and radio survey of southern radio galaxies -- A study of Sérsic-Pastoriza galaxies -- Infrared emission and tidal interactions of spiral galaxies -- The optical variability of selected blazars -- Long-term monitoring of a large sample of active galactic nuclei -- The long term optical variability of PKS 2201 + 044 -- A photometric investigation of the optical variability of Markarian 501 -- The optical variability of Arakelian 120, 1977?1987 -- Observations of the 1987 outburst of AO 0235+164 -- A complete spectral analysis of the flare of the quasar 3C 273 -- Broad line variations of Seyfert galaxies -- Effect of pulsed variations of the ionizing continuum on the narrow line region -- Observations and interpretation of the multifrequency continua of AGN and QSOs -- Theory of AGN continuum radiation -- Model for the continuum emission of active galactic nuclei -- Fitting multi-wavelength continuum of AGN with improved accretion disk models -- Accretion-disk modelling of the optical-UV spectrum of quasars -- Synthesis of accretion disk and nonthermal source models for AGN -- Effects of self-gravity in AGNs -- Mass and length scale of black holes in quasars and active galactic nuclei -- X-ray spectra of active galaxies -- Clues to the X-ray emission mechanisms in flat radio spectrum AGNs -- X-ray timing of active galactic nuclei -- X-ray and optical studies of iras selected AGN -- Leakage of UHE photons from AGNs: Production of X-ray and ?-ray halos within 10?30 KPC -- Radiation dynamics and pair creation in AGN accretion shocks -- Thermal comptonization in compact sources and the cosmic X-ray background -- Radio sources: Small scale structure -- The internal conditions of parsec-scale relativistic jets -- The nuclear jet in M87 -- European VLBI network observations of Seyfert Nuclei -- VLBI observations of the radio lobe spiral galaxy, NGC3079 -- Compact steep spectrum radio sources -- The CM-wavelength fluxes and linear polarizations of BL Lac objects -- Large scale radio structures -- Triple radio structure in the ?double-nucleus? galaxy Markarian 266 -- VLA observation of the M87 jet and small scale jet structures -- Extended optical line emission in powerful radio galaxies -- The interaction of radio jets with the narrow line region in Seyfert galaxies -- Optical continuum shapes of extragalactic radio jets -- The interaction of relativistic jets in AGNs with the ambient radiation field -- A circuit analogy for active galactic nuclei -- A model for quasi-one-dimensional narrow jets -- Two-and-one-half dimensional models of radio jets -- Linear size versus redshift and linear size versus power for extended extragalactic radio sources -- Evolution of radio jets in galactic halos and the intergalactic medium -- AGNS in clusters of galaxies and the bootes void -- Space distribution and luminosity function of quasars -- A preliminary examination of redshift and luminosity characteristics for APM survey quasars -- The evolution of active galactic nuclei: A multi-mass model -- Evolution of low luminosity quasars -- Evolutionary sequence of Seyfert galaxies -- Multiple QSO images with arcminute splittings -- Relativistic beaming, luminosity functions, and cosmology. 330 $aThis volume summarizes recent developments in our understanding of active galactic nuclei, including quasars, seyfert galaxies and radio galaxies. The predominant emphasis is put on observational results with information from essentially all wave bands, but important theoretical results are also presented. Among the contributions are discussions of the different types of active galaxies, the nature of the central engine, the wiggly structure of radio jets, the dynamics of the gas in jets, the study of millimeter and extreme ultraviolet regions, and a discussion of the observed continuum of the entire electromagnetic spectrum. The intended readers are professional astronomers and astrophysicists as well as graduate students in this field of research. 410 0$aLecture Notes in Physics,$x0075-8450 ;$v307 606 $aObservations, Astronomical 606 $aAstronomy?Observations 606 $aAstrophysics 606 $aGeophysics 606 $aElementary particles (Physics) 606 $aQuantum field theory 606 $aAstronomy, Observations and Techniques$3https://scigraph.springernature.com/ontologies/product-market-codes/P22014 606 $aAstrophysics and Astroparticles$3https://scigraph.springernature.com/ontologies/product-market-codes/P22022 606 $aGeophysics/Geodesy$3https://scigraph.springernature.com/ontologies/product-market-codes/G18009 606 $aElementary Particles, Quantum Field Theory$3https://scigraph.springernature.com/ontologies/product-market-codes/P23029 615 0$aObservations, Astronomical. 615 0$aAstronomy?Observations. 615 0$aAstrophysics. 615 0$aGeophysics. 615 0$aElementary particles (Physics). 615 0$aQuantum field theory. 615 14$aAstronomy, Observations and Techniques. 615 24$aAstrophysics and Astroparticles. 615 24$aGeophysics/Geodesy. 615 24$aElementary Particles, Quantum Field Theory. 676 $a520 702 $aMiller$b H. Richard$4edt$4http://id.loc.gov/vocabulary/relators/edt 702 $aWiita$b Paul J$4edt$4http://id.loc.gov/vocabulary/relators/edt 906 $aBOOK 912 $a996466721203316 996 $aActive Galactic Nuclei$92526090 997 $aUNISA LEADER 06162nam 22006375 450 001 996465360503316 005 20200705031938.0 010 $a3-030-38141-2 024 7 $a10.1007/978-3-030-38141-7 035 $a(CKB)5280000000218564 035 $a(MiAaPQ)EBC6220920 035 $a(DE-He213)978-3-030-38141-7 035 $a(PPN)248595830 035 $a(EXLCZ)995280000000218564 100 $a20200603d2020 u| 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aGuide to Computer Network Security$b[electronic resource] /$fby Joseph Migga Kizza 205 $a5th ed. 2020. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2020. 215 $a1 online resource (599 pages) 225 1 $aTexts in Computer Science,$x1868-0941 311 $a3-030-38140-4 327 $aPart I: Introduction to Traditional Computer Network Security -- Computer Network Fundamentals -- Computer Network Security Fundamentals -- Part II: Security Issues and Challenges in the Traditional Computer Network -- Security Threats and Threat Motives to Computer Networks -- Introduction to Computer Network Vulnerabilities -- Cyber Crimes and Hackers -- Scripting and Security in Computer Networks and Web Browsers -- Security Assessment, Analysis, and Assurance -- Part III: Dealing with Computer Network Security Challenges -- Disaster Management -- Access Control and Authorization -- Authentication Control and Authorization -- Authentication -- Cryptography -- Firewalls -- System Intrusion Detection and Prevention -- Computer and Network Forensics -- Virus and Content Filtering -- Standardization and Security Criteria: Security Evaluation of Computer Products -- Computer Network Security Protocols -- Security in Wireless Networks and Devices -- Security in Sensor Networks -- Other Efforts to Secure Data in Computer Networks and Beyond -- Part IV: The Emergence of the Digital and Social Network Ecosystem ? The Elastic Extension of the Traditional Computer Network Through Virtualization, Cloud Computing and Mobile Technologies -- Virtualization Technology and Security -- Cloud Computing Technology and Security -- Mobile Systems and Corresponding Intractable Security Issues -- Internet of Things (IoT): Growth, Challenges, and Security -- Blockchains, Cryptocurrency, and Smart Contracts Technology: Security Considerations -- Part V: Securing the Last Frontiers ? The Home Front -- Conquering the Last Frontier in the Digital Invasion: The Home Front -- Part VI: Hands-On Projects -- Projects. 330 $aThis timely textbook presents a comprehensive guide to the core topics in cybersecurity, covering issues of security that extend beyond traditional computer networks to the ubiquitous mobile communications and online social networks that have become part of our daily lives. In the context of our growing dependence on an ever-changing digital ecosystem, this book stresses the importance of security awareness, whether in our homes, our businesses, or our public spaces. This fully updated new edition features new material on the security issues raised by blockchain technology, and its use in logistics, digital ledgers, payments systems, and digital contracts. Topics and features: Explores the full range of security risks and vulnerabilities in all connected digital systems Inspires debate over future developments and improvements necessary to enhance the security of personal, public, and private enterprise systems Raises thought-provoking questions regarding legislative, legal, social, technical, and ethical challenges, such as the tension between privacy and security Describes the fundamentals of traditional computer network security, and common threats to security Reviews the current landscape of tools, algorithms, and professional best practices in use to maintain security of digital systems Discusses the security issues introduced by the latest generation of network technologies, including mobile systems, cloud computing, and blockchain Presents exercises of varying levels of difficulty at the end of each chapter, and concludes with a diverse selection of practical projects Offers supplementary material for students and instructors at an associated website, including slides, additional projects, and syllabus suggestions This important textbook/reference is an invaluable resource for students of computer science, engineering, and information management, as well as for practitioners working in data- and information-intensive industries. 410 0$aTexts in Computer Science,$x1868-0941 606 $aInformation storage and retrieval 606 $aData structures (Computer science) 606 $aManagement information systems 606 $aComputer science 606 $aComputer communication systems 606 $aInformation Storage and Retrieval$3https://scigraph.springernature.com/ontologies/product-market-codes/I18032 606 $aData Storage Representation$3https://scigraph.springernature.com/ontologies/product-market-codes/I15025 606 $aManagement of Computing and Information Systems$3https://scigraph.springernature.com/ontologies/product-market-codes/I24067 606 $aComputer Communication Networks$3https://scigraph.springernature.com/ontologies/product-market-codes/I13022 615 0$aInformation storage and retrieval. 615 0$aData structures (Computer science). 615 0$aManagement information systems. 615 0$aComputer science. 615 0$aComputer communication systems. 615 14$aInformation Storage and Retrieval. 615 24$aData Storage Representation. 615 24$aManagement of Computing and Information Systems. 615 24$aComputer Communication Networks. 676 $a005.8 700 $aKizza$b Joseph Migga$4aut$4http://id.loc.gov/vocabulary/relators/aut$0910924 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a996465360503316 996 $aGuide to Computer Network Security$92282091 997 $aUNISA