Готові списки джерел за темами / Electron Clouds

Добірка наукової літератури з теми "Electron Clouds"

Автор: Grafiati
Опубліковано: 7 вересня 2023

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Статті в журналах з теми "Electron Clouds"

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Lehmann, Andrew, and Mark Wardle. "Diffusion of cosmic-ray electrons in the Galactic centre molecular cloud G0.13–0.13." Proceedings of the International Astronomical Union 9, S303 (October 2013): 434–38. http://dx.doi.org/10.1017/s1743921314001082.

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AbstractThe Galactic center (GC) molecular cloud G0.13–0.13 exhibits a shell morphology in CS J = (1 − 0), with ∼ 105 solar masses and expansion speed ∼ 20 km s−1, yielding a total kinetic energy ∼ 1051 erg. Its morphology is also suggestive of an interaction with the nonthermal filaments of the GC arc. 74 MHz emission indicates the presence of a substantial population of low energy electrons permeating the cloud, which could either be produced by the interaction with the arc or accelerated in the shock waves responsible for the cloud's expansion. These scenarios are explored using time dependent diffusion models.With these diffusion models, we determine the penetration of low-energy cosmic-ray electrons accelerated into G0.13–0.13 and calculate the spatial distribution of the cosmic-ray ionization and heating rates. We show that the 6.4 keV Fe Kα line emission associated with the electron population provides an observational diagnostic to distinguish these two acceleration scenarios.We discuss the implications of our results for understanding the distinct character of clouds in the central molecular zone compared to clouds in the Galactic disk, and how GC nonthermal filaments interact with molecular clouds.
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2

Bakhareva, O. A., V. Yu Sergeev, and I. A. Sharov. "On the Formation of a Plasma Cloud at the Ablation of a Pellet in a High-Temperature Magnetized Toroidal Plasma." JETP Letters 117, no. 3 (February 2023): 207–13. http://dx.doi.org/10.1134/s0021364022603190.

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The investigation of cold secondary plasma clouds near pellets ablating in the hot plasma of magnetic confinement devices (tokamaks and stellarators) provides valuable information on the physical characteristics of a pellet cloud. In this work, the characteristic sizes of emitting clouds around fusible polystyrene pellets and refractory carbon pellets have been analyzed. The calculation of the ionization length of C+ ions in both carbon and hydrocarbon clouds has shown that the contribution of only hot electrons is insufficient to ensure the experimentally observed decay lengths of the CII line intensity. Taking into account the strong shielding of the electron flux of the background plasma in the hydrocarbon pellet cloud, the ionization of C+ ions in this cloud is determined predominantly by electrons of the cold plasma of the cloud. Shielding near a refractory carbon pellet is weak because its ablation rate is lower. The contributions from hot electrons of the surrounding plasma and cold electrons of the pellet cloud to the ionization of C+ ions are comparable in the case of carbon pellets.
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3

Le Bars, G., J. Loizu, J. Ph Hogge, S. Alberti, F. Romano, J. Genoud, and I. G. Pagonakis. "First self-consistent simulations of trapped electron clouds in a gyrotron gun and comparison with experiments." Physics of Plasmas 30, no. 3 (March 2023): 030702. http://dx.doi.org/10.1063/5.0136340.

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We report on the initial validation of the novel code FENNECS, which simulates the spontaneous formation of trapped electron clouds in coaxial geometries with strong externally applied azimuthal flows and in the presence of a residual neutral gas. For this purpose, a realistic gyrotron electron gun geometry is used in the code, and a self-consistent electron cloud build-up is simulated. The predicted electronic current resulting from these clouds that is collected on the gun electrodes is simulated and successfully compared with the previous experimental results for configurations with different externally applied electric and magnetic fields. These different configurations effectively modify the size and depth of the trapping potential wells responsible for the confinement of the electron clouds. This investigation also provides further insight into the link between potential well depth and resulting electronic current.
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4

John, P. I. "Physics of toroidal electron clouds." Plasma Physics and Controlled Fusion 34, no. 13 (December 1, 1992): 2053–59. http://dx.doi.org/10.1088/0741-3335/34/13/039.

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Tkachev, A. N., and S. I. Yakovlenko. "Electron clouds around charged particulates." Technical Physics 44, no. 1 (January 1999): 48–52. http://dx.doi.org/10.1134/1.1259250.

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6

Dimant, Y. S., and M. M. Oppenheim. "Interaction of plasma cloud with external electric field in lower ionosphere." Annales Geophysicae 28, no. 3 (March 11, 2010): 719–36. http://dx.doi.org/10.5194/angeo-28-719-2010.

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Abstract. In the auroral lower-E and upper-D region of the ionosphere, plasma clouds, such as sporadic-E layers and meteor plasma trails, occur daily. Large-scale electric fields, created by the magnetospheric dynamo, will polarize these highly conducting clouds, redistributing the electrostatic potential and generating anisotropic currents both within and around the cloud. Using a simplified model of the cloud and the background ionosphere, we develop the first self-consistent three-dimensional analytical theory of these phenomena. For dense clouds, this theory predicts highly amplified electric fields around the cloud, along with strong currents collected from the ionosphere and circulated through the cloud. This has implications for the generation of plasma instabilities, electron heating, and global MHD modeling of magnetosphere-ionosphere coupling via modifications of conductances induced by sporadic-E clouds.
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7

Zhang, Tao. "Average value of the shape and direction factor in the equation of refractive index." Modern Physics Letters B 31, no. 29 (October 17, 2017): 1750263. http://dx.doi.org/10.1142/s0217984917502633.

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The theoretical calculation of the refractive indices is of great significance for the developments of new optical materials. The calculation method of refractive index, which was deduced from the electron-cloud-conductor model, contains the shape and direction factor [Formula: see text]. [Formula: see text] affects the electromagnetic-induction energy absorbed by the electron clouds, thereby influencing the refractive indices. It is not yet known how to calculate [Formula: see text] value of non-spherical electron clouds. In this paper, [Formula: see text] value is derived by imaginatively dividing the electron cloud into numerous little volume elements and then regrouping them. This paper proves that [Formula: see text] when molecules’ spatial orientations distribute randomly. The calculations of the refractive indices of several substances validate this equation. This result will help to promote the application of the calculation method of refractive index.
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8

del Valle, Maria V. "Gamma-rays from reaccelerated cosmic rays in high-velocity clouds colliding with the Galactic disc." Monthly Notices of the Royal Astronomical Society 509, no. 3 (November 11, 2021): 4448–56. http://dx.doi.org/10.1093/mnras/stab3206.

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ABSTRACT High-velocity clouds moving towards the disc will reach the Galactic plane and will inevitably collide with the disc. In these collisions, a system of two shocks is produced, one propagating through the disc and the other develops within the cloud. The shocks produced within the clouds in these interactions have velocities of hundreds of kilometres per second. When these shocks are radiative they may be inefficient in accelerating fresh particles; however, they can reaccelerate and compress Galactic cosmic rays from the background. In this work, we investigate the interactions of Galactic cosmic rays within a shocked high-velocity cloud, when the shock is induced by the collision with the disc. This study is focused in the case of radiative shocks. We aim to establish under which conditions these interactions lead to significant non-thermal emission, especially gamma-rays. We model the interaction of cosmic ray protons and electrons reaccelerated and further energized by compression in shocks within the clouds, under very general assumptions. We also consider secondary electron–positron pairs produced by the cosmic ray protons when colliding with the material of the cloud. We conclude that nearby clouds reaccelerating Galactic cosmic rays in local shocks can produce high-energy radiation that might be detectable with existing and future gamma-ray detectors. The emission produced by electrons and secondary pairs is important at radio wavelengths, and in some cases it may be relevant at hard X-rays. Concerning higher energies, the leptonic contribution to the spectral energy distribution is significant at soft gamma-rays.
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9

Stein, Benjamin P. "An “orbital glass” of electron clouds." Physics Today 58, no. 3 (March 2005): 9. http://dx.doi.org/10.1063/1.4796921.

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Zharkova, Valentina V., and Taras Siversky. "Formation of electron clouds during particle acceleration in a 3D current sheet." Proceedings of the International Astronomical Union 6, S274 (September 2010): 453–57. http://dx.doi.org/10.1017/s1743921311007472.

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AbstractAcceleration of protons and electrons in a reconnecting current sheet (RCS) is investigated with the test particle and particle-in-cell (PIC) approaches in the 3D magnetic configuration including the guiding field. PIC simulations confirm a spatial separation of electrons and protons towards the midplane and reveal that this separation occur as long as protons are getting accelerated. During this time electrons are ejected into their semispace of the current sheet moving away from the midplane to distances up to a factor of 103 – 104 of the RCS thickness and returning back to the RCS. This process of electron circulation around the current sheet midplane creates a cloud of high energy electrons around the current sheet which exists as long as protons are accelerated. Only after protons gain sufficient energy to break from the magnetic field of the RCS, they are ejected to the opposite semispace dragging accelerated electrons with them. These clouds can be the reason of hard X-ray emission in coronal sources observed by RHESSI.
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Дисертації з теми "Electron Clouds"

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Petrov, Fedor [Verfasser], Oliver [Akademischer Betreuer] Boine-Frankenheim, Thomas [Akademischer Betreuer] Weiland, and Hoffmann [Akademischer Betreuer] Dieter. "Electron Clouds in High Energy Hadron Accelerators / Fedor Petrov. Betreuer: Oliver Boine-Frankenheim ; Thomas Weiland ; Hoffmann Dieter." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2013. http://d-nb.info/1107771056/34.

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Fallas, German Vidaurre. "Characterization of mixed-phase clouds." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3275833.

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Uriarte, Rafael Brundo. "Supporting Autonomic Management of Clouds: Service-Level-Agreement, Cloud Monitoring and Similarity Learning." Thesis, IMT Alti Studi Lucca, 2015. http://e-theses.imtlucca.it/163/1/RafaelBrundoUriarte_Thesis_Final_A5.pdf.

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Cloud computing has grown rapidly during the past few years and has become a fundamental paradigm in the Information Technology (IT) area. Clouds enable dynamic, scalable and rapid provision of services through a computer network, usually the Internet. However, managing and optimising clouds and their services in the presence of dynamism and heterogeneity is one of the major challenges faced by industry and academia. A prominent solution is resorting to selfmanagement as fostered by autonomic computing. Self-management requires knowledge about the system and the environment to enact the self-* properties. Nevertheless, the characteristics of cloud, such as large-scale and dynamism, hinder the knowledge discovery process. Moreover, cloud systems abstract the complexity of the infrastructure underlying the provided services to their customers, which obfuscates several details of the provided services and, thus, obstructs the effectiveness of autonomic managers. While a large body of work has been devoted to decisionmaking and autonomic management in the cloud domain, there is still a lack of adequate solutions for the provision of knowledge to these processes. In view of the lack of comprehensive solutions for the provision of knowledge to the autonomic management of clouds, we propose a theoretical and practical framework which addresses three major aspects of this process: (i) the definition of services’ provision through the specification of a formal language to define Service-Level-Agreements for the cloud domain; (ii) the collection and processing of information through an extensible knowledge discovery architecture to monitor autonomic clouds with support to the knowledge discovery process; and (iii) the knowledge discovery through a machine learning methodology to calculate the similarity among services, which can be employed for different purposes, e.g. service scheduling and anomalous behaviour detection. Finally, in a case study, we integrate the proposed solutions and show the benefits of this integration in a hybrid cloud test-bed.
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4

Nicoll, Keri. "Coupling Between the Global Atmospheric Electric Circuit and Clouds." Thesis, University of Reading, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525116.

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Sebastio, Stefano. "Enriching volunteer clouds with self-* capabilities." Thesis, IMT Alti Studi Lucca, 2014. http://e-theses.imtlucca.it/146/1/Sebastio_phdthesis.pdf.

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Provisioning, using and maintaing computational resources as services is a hard challenge. On the one hand there is an increasing demand of such services due to the increasing role of software in our society, while on the other hand the amount and variety computational resources is growing due to the pervasiveness of computational devices in our lives. The complexity of such problem can only be mastered by resorting to suitable technologies based on well-studied paradigms. Three prominent examples and ICT trends of the last decade are (i) cloud computing, which promotes the idea of computational resources as services; (ii) autonomic computing, which aims at minimizing the amount of human intervention and automatizing many aspects of a system’s life-cycle; and (iii) volunteer computing, which promotes the idea of achieving complex tasks by fostering the collaboration among peers. This thesis proposes an approach based on the combination of the above mentioned paradigms (i)–(iii) for the design and evaluation of volunteer cloud platforms providing a service for executing simple tasks. The major problem under consideration is the selection of the mechanisms used by cloud participants to collaborate for providing such service. The main contributions of the thesis are: (1) an architecture and a model for volunteer cloud platforms; (2) a discrete event simulator for such model; (3) the extension of a statistical analysis tool to ease the analysis; (4) novel self-* strategies for collaboration among volunteers, mainly inspired by multi-agent systems and AI techniques, evaluated with the simulator using the Google Backend workload.
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6

Nasir, Usman. "An assessment model for Enterprise Clouds adoption." Thesis, Keele University, 2017. http://eprints.keele.ac.uk/4281/.

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Context: Enterprise Cloud Computing (or Enterprise Clouds) is using the Cloud Computing services by a large-scale organisation to migrate its existing IT services or use new Cloud based services. There are many issues and challenges that are barrier to the adoption of Enterprise Clouds. The adoption challenges have to be addressed for better assimilation of Cloud based services within the organisation. Objective: The aim of this research was to develop an assessment model for adoption of Enterprise Clouds. Method: Key challenges reported as barrier in adoption of Cloud Computing were identified from literature using the Systematic Literature Review methodology. A survey research was carried out to elicit industrial approaches and practices from Cloud Computing experts that help in overcoming the key challenges. Both key challenges and practices were used in formulating the assessment model. Results: The results have highlighted that key challenges in the adoption of Enterprise Clouds are security & reliability concerns, resistance to change, vendor lock-in issues, data privacy and difficulties in application and service migration. The industrial practices to overcome these challenges are: planning and executing pilot project, assessment of IT needs, use of open source APIs, involvement of legal team in vendor selection, identification of the processes to change, involvement of senior executive as change champion, using vendor partners to support application/service migration to Cloud Computing and creating employee awareness about Cloud Computing services. Conclusion: Using the key challenges and practices, the assessment model was developed that assesses an organisation’s readiness to adopt Enterprise Clouds. The model measures the readiness in four dimensions: technical, legal & compliance, IT capabilities and end user readiness for the adoption of Enterprise Clouds. The model’s result can help the organisation in overcoming the adoption challenges for successful assimilation of newly deployed or migrated IT services on Enterprise Clouds.
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Chen, Chao. "Performance-oriented service management in clouds." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/81885/.

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Cloud computing has provided the convenience for many IT-related and traditional industries to use feature-rich services to process complex requests. Various services are deployed in the cloud and they interact with each other to deliver the required results. How to effectively manage these services, the number of which is ever increasing, within the cloud has unavoidably become a critical issue for both tenants and service providers of the cloud. In this thesis, we develop the novel resource provision frameworks to determine resources provision for interactive services. Next, we propose the algorithms for mapping Virtual Machines (VMs) to Physical Machines (PMs) under different constraints, aiming to achieve the desired Quality-of-Services (QoS) while optimizing the provisions in both computing resources and communication bandwidth. Finally, job scheduling may become a performance bottleneck itself in such a large scale cloud. In order to address this issue, the distributed job scheduling framework has been proposed in the literature. However, such distributed job scheduling may cause resource conflict among distributed job schedulers due to the fact that individual job schedulers make their job scheduling decisions independently. In this thesis, we investigate the methods for reducing resource conflict. We apply the game theoretical methodology to capture the behaviour of the distributed schedulers in the cloud. The frameworks and methods developed in this thesis have been evaluated with a simulated workload, a large-scale workload trace and a real cloud testbed.
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Pawar, Pramod S. "Cloud broker based trust assessment of cloud service providers." Thesis, City University London, 2015. http://openaccess.city.ac.uk/13687/.

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Cloud computing is emerging as the future Internet technology due to its advantages such as sharing of IT resources, unlimited scalability and flexibility and high level of automation. Along the lines of rapid growth, the cloud computing technology also brings in concerns of security, trust and privacy of the applications and data that is hosted in the cloud environment. With large number of cloud service providers available, determining the providers that can be trusted for efficient operation of the service deployed in the provider’s environment is a key requirement for service consumers. In this thesis, we provide an approach to assess the trustworthiness of the cloud service providers. We propose a trust model that considers real-time cloud transactions to model the trustworthiness of the cloud service providers. The trust model uses the unique uncertainty model used in the representation of opinion. The Trustworthiness of a cloud service provider is modelled using opinion obtained from three different computations, namely (i) compliance of SLA (Service Level Agreement) parameters (ii) service provider satisfaction ratings and (iii) service provider behaviour. In addition to this the trust model is extended to encompass the essential Cloud characteristics, credibility for weighing the feedbacks and filtering mechanisms to filter the dubious feedback providers. The credibility function and the early filtering mechanisms in the extended trust model are shown to assist in the reduction of impact of malicious feedback providers.
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Aldawsari, B. M. A. "An energy-efficient multi-cloud service broker for green cloud computing environment." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/7954/.

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The heavy demands on cloud computing resources have led to a substantial growth in energy consumption of the data transferred between cloud computing parties (i.e., providers, datacentres, users, and services) and in datacentre’s services due to the increasing loads on these services. From one hand, routing and transferring large amounts of data into a datacentre located far from the user’s geographical location consume more energy than just processing and storing the same data on the cloud datacentre. On the other hand, when a cloud user submits a job (in the form of a set of functional and non-functional requirements) to a cloud service provider (aka, datacentre) via a cloud services broker; the broker becomes responsible to find the best-fit service to the user request based mainly on the user’s requirements and Quality of Service (QoS) (i.e., response time, latency). Hence, it becomes a high necessity to locate the lowest energy consumption route between the user and the designated datacentre; and the minimum possible number of most energy efficient services that satisfy the user request. In fact, finding the most energy-efficient route to the datacentre, and most energy efficient service(s) to the user are the biggest challenges of multi-cloud broker’s environment. This thesis presents and evaluates a novel multi-cloud broker solution that contains three innovative models and their associated algorithms. The first one is aimed at finding the most energy efficient route, among multiple possible routes, between the user and cloud datacentre. The second model is to find and provide the lowest possible number of most energy efficient services in order to minimise data exchange based on a bin-packing approach. The third model creates an energy-aware composition plan by integrating the most energy efficient services, in order to fulfil user requirements. The results demonstrated a favourable performance of these models in terms of selecting the most energy efficient route and reaching the least possible number of services for an optimum and energy efficient composition.
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Kudryavtsev, Andrey. "3D Reconstruction in Scanning Electron Microscope : from image acquisition to dense point cloud." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCD050/document.

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L’objectif de ce travail est d’obtenir un modèle 3D d’un objet à partir d’une série d’images prisesavec un Microscope Electronique à Balayage (MEB). Pour cela, nous utilisons la technique dereconstruction 3D qui est une application bien connue du domaine de vision par ordinateur.Cependant, en raison des spécificités de la formation d’images dans le MEB et dans la microscopieen général, les techniques existantes ne peuvent pas être appliquées aux images MEB. Lesprincipales raisons à cela sont la projection parallèle et les problèmes d’étalonnage de MEB entant que caméra. Ainsi, dans ce travail, nous avons développé un nouvel algorithme permettant deréaliser une reconstruction 3D dans le MEB tout en prenant en compte ces difficultés. De plus,comme la reconstruction est obtenue par auto-étalonnage de la caméra, l’utilisation des mires n’estplus requise. La sortie finale des techniques présentées est un nuage de points dense, pouvant donccontenir des millions de points, correspondant à la surface de l’objet
The goal of this work is to obtain a 3D model of an object from its multiple views acquired withScanning Electron Microscope (SEM). For this, the technique of 3D reconstruction is used which isa well known application of computer vision. However, due to the specificities of image formation inSEM, and in microscale in general, the existing techniques are not applicable to the SEM images. Themain reasons for that are the parallel projection and the problems of SEM calibration as a camera.As a result, in this work we developed a new algorithm allowing to achieve 3D reconstruction in SEMwhile taking into account these issues. Moreover, as the reconstruction is obtained through cameraautocalibration, there is no need in calibration object. The final output of the presented techniques isa dense point cloud corresponding to the surface of the object that may contain millions of points
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Книги з теми "Electron Clouds"

1

Geoffrey, Fox, and Dongarra J. J, eds. Distributed and cloud computing: Clusters, grids, clouds, and the future Internet. Watham, MA: Morgan Kaufmann, 2012.

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2

Chang, William Y. Transforming enterprise cloud services. Dordrecht: Springer, 2010.

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3

Culeen, Aufoy B. K., 1946-, ed. In cage: Atomic electron cloud ; Welat : forming of the universe. New York: Studio 1976, 1988.

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4

Giovanni, Aloisio, and SpringerLink (Online service), eds. Grids, Clouds and Virtualization. London: Springer-Verlag London Limited, 2011.

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5

Reese, George. Cloud Application Architectures: Building Applications and Infrastructure in the Cloud. Sebastopol: O'Reilly Media, Inc., 2009.

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6

Cloud application architectures. Sebastopol, CA: O'Reilly, 2009.

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7

International Workshop on Electron-Cloud Effects (2007 Taegu, Korea). International Workshop on Electron-Cloud Effects (ECLOUD'07): Daegu, Korea, 9-12 April 2007. Edited by Fukuma Hitoshi 1952-, Kim Eun-sun, Ōmi Kazuhito, and Kō-enerugī Kasokuki Kenkyū Kikō (Japan). Tsukuba-shi: High Energy Accelerator Research Organization, 2007.

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8

Cloud surfing. Brookline, MA: Bibliomotion, 2012.

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9

Institute, Pennsylvania Bar. EDiscovery, computer forensics and the cloud. Mechanicsburg, Pennsylvania: Pennsylvania Bar Institute, 2013.

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10

1961-, Hulitzky Derek, ed. Business in the cloud: What every business needs to know about cloud computing. New York: Wiley, 2011.

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Частини книг з теми "Electron Clouds"

1

Despringre, V., and D. Fraix-Burnet. "Relativistic Electron-Positron Clouds in VLBI Jets." In Extragalactic Radio Sources, 443–44. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0295-4_157.

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2

Su, Q., R. E. Wagner, P. J. Peverly, and R. Grobe. "Spatial Electron Clouds at Fractional and Multiple Magneto-optical Resonances." In Frontiers of Laser Physics and Quantum Optics, 117–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-07313-1_9.

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3

Sakai, J. I., Y. Kazimura, and S. V. Bulanov. "Generation Of Magnetic Field And Fast Particles During Collision Of Electron-Positron Plasma Clouds." In Plasma Astrophysics And Space Physics, 381–90. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4203-8_28.

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4

Sodha, Mahendra Singh. "Kinetics of Dust-Electron Cloud." In Springer Series on Atomic, Optical, and Plasma Physics, 101–12. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1820-3_4.

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Antipov, Sergey A. "Electron Cloud in Particle Accelerators." In Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets, 1–17. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02408-6_1.

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Sree Padmapriya, A., B. Sabiha Sulthana, A. Tejaswini, P. Snehitha, K. B. V. Brahma Rao, and Dinesh Kumar Anguraj. "Electronic Health Records Rundown: A Novel Survey." In Expert Clouds and Applications, 501–10. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1745-7_36.

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Wen, Kao, Junjian Huang, Chan Zhou, and Kejiang Ye. "Electronic Card Localization Algorithm Based on Visible Light Screen Communication." In Cloud Computing – CLOUD 2021, 32–44. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96326-2_3.

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Wirtz, Bernd W. "Cloud Computing und Big Data." In Electronic Business, 245–58. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-30712-7_9.

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Herbst, Eric. "Dissociative Recombination in Interstellar Clouds." In Dissociative Recombination of Molecular Ions with Electrons, 351–63. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0083-4_34.

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Beckers, Kristian, and Jan Jürjens. "Security and Compliance in Clouds." In ISSE 2010 Securing Electronic Business Processes, 91–100. Wiesbaden: Vieweg+Teubner, 2011. http://dx.doi.org/10.1007/978-3-8348-9788-6_9.

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Тези доповідей конференцій з теми "Electron Clouds"

1

Sorolla, E., F. Zimmermann, and M. Mattes. "Modelling the interaction of electron clouds and microwaves." In 2012 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2012. http://dx.doi.org/10.1109/iceaa.2012.6328764.

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Pradhan, Ranjit D., Victor Grubsky, Wondwosen Mengesha, Yunping Yang, Volodymyr Romanov, Gennady Medvedkin, Ihor Berezhnyy, Igor Mariyenko, Tomasz P. Jannson, and Gajendra Savant. "Gamma-ray detection by optical visualization of electron clouds." In Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X. SPIE, 2009. http://dx.doi.org/10.1117/12.830510.

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Lapington, J. S., and M. L. Edgar. "The Size And Spatial Distribution Of Microchannel Plate Output Electron Clouds." In 33rd Annual Techincal Symposium, edited by Charles J. Hailey and Oswald H. W. Siegmund. SPIE, 1989. http://dx.doi.org/10.1117/12.962611.

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4

Veitzer, Seth A., David N. Smithe, and Peter H. Stoltz. "Application of new simulation algorithms for modeling rf diagnostics of electron clouds." In ADVANCED ACCELERATOR CONCEPTS: 15th Advanced Accelerator Concepts Workshop. AIP, 2013. http://dx.doi.org/10.1063/1.4773730.

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5

Benedetto, E., J. W. Flanagan, H. C. Jin, and K. Ohmi. "Simulation of the synchro-betatron sideband instability caused by electron clouds at KEKB." In 2007 IEEE Particle Accelerator Conference. IEEE, 2007. http://dx.doi.org/10.1109/pac.2007.4439955.

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Soare, G. "A Physical Model of the Molecular-Quantum Natural Convection Heat Transfer Mechanism." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47401.

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In this work a physical model of the natural convection heat transfer mechanism, molecular-quantum in nature, is proposed. On the surface of the solid there are a lot of chemical defects (atoms of different chemical elements) and geometrical ones (steps, kinks, terraces, dislocations) at microscopic and nanoscopic scale. All these defects make the surface of the wall to be not an equipotential surface. On the other hand, the existence of a gradient of temperature in a metal wall, which is involved in a heat transfer process, generates a gradient of conduction electrons. On the cool face of the wall there are more electrons as a result of Pe´ltier-Thomson effect. Because of surface’s defects the electrons are not uniformly distributed, on a high defect there are more electrons than on a depth defect and the electrical field is more intense on the high defect. The molecules of the fluid are adsorbed on the surface, and become polar molecules, as a result of the polarization by influence. The absorbed molecules form a multilayer in which take place more elementary processes, molecular-quantum in nature. These elementary processes are: the overlap between the electronic orbital of the solid and fluid, electron clouds perturbation, solid-fluid electron exchange by quantum tunneling effect, the motion under action of the Helmann-Feynman force between adsorbed molecules and a high defect of the wall, the absorption of the phonons from the surface’s atoms and rejection of the molecules from the surface. In this way natural convection is generated. The proposed model needs directly experimental confirmation.
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Oshchepkov, Sergey, and Harumi Isaka. "Studies of an Inverse Scattering Problem Solution for Mixed-Phase and Cirrus Clouds." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.ctuk11.

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The determination of cloud microphysicai parameters by light scattering methods can be referred to one of the most priority procedures of the modem atmospheric optics. Such an information including phase cloud structure is interesting as itself at studying the formation of mixed phase clouds, nucleation processes, precipitation and is a primary factor to calculate radiative transfer through clouds and to design radiative models of cloud cover.
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Хучунаев, Бузигит Муссаевич, Сафият Омаровна Геккиева, and Алим Хадисович Будаев. "STUDIES OF THE EFFECT OF THE ELECTRIC FIELD STRENGTH ON THE ELECTRIC CHARGES OF ZINC OXIDE PARTICLES FORMED DURING THERMAL SUBLIMATION OF ZINC IN A VAPOROUS MEDIUM." In Сборник избранных статей по материалам научных конференций ГНИИ "Нацразвитие" (Санкт-Петербург, Август 2022). Crossref, 2022. http://dx.doi.org/10.37539/aug304.2022.18.86.003.

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Мощные кучево-дождевые облака обладают сильными электрическими полями и содержат заряженные частицы гидрометеоров и аэрозолей [1]. На частицы вносимого реагента влияют электрические характеристики облака [2]. В статье представлены результаты исследования влияния электрического поля на электрический заряд частиц оксида цинка, образующихся при термической возгонке цинка в парообразной среде. Powerful cumulonimbus clouds have strong electric fields and contain charged particles of hydrometeors and aerosols [1]. The particles of the introduced reagent are affected by the electrical characteristics of the cloud [2]. The article presents the results of a study of the effect of an electric field on the electric charge of zinc oxide particles formed during thermal sublimation of zinc in a vaporous medium.
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Dunn, Michael G., Adam J. Baran, and Jerry Miatech. "Operation of Gas Turbine Engines in Volcanic Ash Clouds." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-170.

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Results are reported for a technology program designed to determine the behavior of gas turbine engines when operating in particle-laden clouds. There are several ways that such clouds may be created, i.e., explosive volcanic eruption, sand storm, military conflict, etc. The response of several different engines, among them the Pratt & Whitney JT3D turbofan, the Pratt & Whitney J57 turbojet, a Pratt & Whitney engine of the JT9 vintage, and an engine of the General Electric CF6 vintage has been determined. The particular damage mode that will be dominant when an engine experiences a dust cloud depends upon the particular engine (the turbine inlet temperature at which the engine is operating when it encounters the dust cloud), the concentration of foreign material in the cloud, and the constituents of the foreign material (the respective melting temperature of the various constituents). Further, the rate at which engine damage will occur depends upon all of the factors given above and the damage is cumulative with continued exposure. An important part of the Calspan effort has been to identify environmental warning signs and to determine which of the engine parameters available for monitoring by the flight crew can provide an early indication of impending difficulty. On the basis of current knowledge, if one knows the location of a particle-laden cloud, then that region should be avoided. However, if the cloud location is unknown, which is generally the case, then it is important to know how to recognize when an encounter has occurred and to understand how to safely operate, which is another part of the Calspan effort.
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Harkay, K. C. "Electron Cloud Effects at Positron/Electron (e+/e−) Machines and Electron Cloud Diagnostics." In HIGH INTENSITY AND HIGH BRIGHTNESS HADRON BEAMS: 20th ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams ICFA-HB2002. AIP, 2002. http://dx.doi.org/10.1063/1.1522667.

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Звіти організацій з теми "Electron Clouds"

1

Drees, Kirsten A. Beam Induced Electron Clouds at RHIC. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/1119541.

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2

Aziz U. I. Electron Clouds in the Relativistic Heavy Ion Collider. Office of Scientific and Technical Information (OSTI), February 2006. http://dx.doi.org/10.2172/1061819.

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3

Iriso U. and S. Peggs. Maps for Coupled Electron and Ion Clouds in Accelerators. Office of Scientific and Technical Information (OSTI), June 2005. http://dx.doi.org/10.2172/1061802.

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Thieberger P., U. Iriso, and S. Peggs. Maps, electron-clouds in RHIC and first-order phase-transitions. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/1061789.

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5

Iriso U. and S. Peggs. Electron Cloud Phase Transitions. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/1061739.

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Heifets, S. Coherent Radiation of Electron Cloud. Office of Scientific and Technical Information (OSTI), November 2004. http://dx.doi.org/10.2172/839602.

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Ji, Yichen. Electron Cloud Studies at Fermilab. Office of Scientific and Technical Information (OSTI), January 2019. http://dx.doi.org/10.2172/1594127.

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Lee Y. Y., G. Mahler, W. Meng, D. Raparia, L. Wang, and J. Wei. Electron Cloud at Injection Region. Office of Scientific and Technical Information (OSTI), March 2005. http://dx.doi.org/10.2172/1157320.

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Fischer W., U. Iriso-Ariz, and E. Mustafin. Electron cloud driven vacuum instability. Office of Scientific and Technical Information (OSTI), December 2004. http://dx.doi.org/10.2172/1061765.

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Heifets, Samuel A. Electron Cloud at High Beam Currents. Office of Scientific and Technical Information (OSTI), November 2002. http://dx.doi.org/10.2172/808680.

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