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Dissertations / Theses on the topic 'Persistent Storage'

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1

Moh, Chuang-Hue 1975. "Snapshots in a distributed persistent object storage system." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87361.

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Bakhshi, Valojerdi Zeinab. "Persistent Fault-Tolerant Storage at the Fog Layer." Licentiate thesis, Mälardalens högskola, Inbyggda system, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55680.

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Clouds are powerful computer centers that provide computing and storage facilities that can be remotely accessed. The flexibility and cost-efficiency offered by clouds have made them very popular for business and web applications. The use of clouds is now being extended to safety-critical applications such as factories. However, cloud services do not provide time predictability which creates a hassle for such time-sensitive applications. Moreover, delays in the data communication between clouds and the devices the clouds control are unpredictable. Therefore, to increase predictability an inter
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Gupta, Sanjay. "A system for interfacing LIFE with database and persistent storage." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24145.pdf.

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Ribeiro, Heverson Borba. "Exploiting rateless coding in structured overlays to achieve persistent storage." Rennes 1, 2012. http://www.theses.fr/2012REN1S166.

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L'importante augmentation de la quantité d'informations sur Internet a contribué à une forte demande pour un stockage persistant des données. Les architectures centralisées de stockage de données sont financièrement onéreuses, faiblement évolutives et vulnérables aux attaques car elles constituent un point unique de défaillance du système. Ces dernières années, les architectures pair-à-pair ont mergé comme une alternative pour la mise en place d'une architecture de stockage persistant des données. Les systèmes pair-à-pair sont fondamentalement évolutifs et moins chers que les modèles client-se
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Printezis, Antonios. "Management of long-running high-performance persistent object stores." Thesis, University of Glasgow, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321911.

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Perez, Taciano Dreckmann. "Persistent memory and orthogonal persistence : a persistent heap design and its implementation for the Java virtual machine." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2017. http://tede2.pucrs.br/tede2/handle/tede/7562.

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Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-07-03T15:03:25Z No. of bitstreams: 1 TES_TACIANO_DRECKMANN_PEREZ_COMPLETO.pdf: 1779781 bytes, checksum: 2111ccea963be0eea76bdbb7d24321d9 (MD5)<br>Made available in DSpace on 2017-07-03T15:03:25Z (GMT). No. of bitstreams: 1 TES_TACIANO_DRECKMANN_PEREZ_COMPLETO.pdf: 1779781 bytes, checksum: 2111ccea963be0eea76bdbb7d24321d9 (MD5) Previous issue date: 2017-05-03<br>Sistemas computacionais da atualidade tradicionalmente separam mem?ria e armazenamento. Linguagens de programa??o tipicamente refletem essa distin??o usando diferentes r
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Li, Jie. "Design and implementation of a persistent multimedia object-oriented storage system." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/10087.

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Multimedia information requires novel database architecture and models for its efficient storage, manipulation, retrieval, and playback. Multimedia database systems must provide facilities to model complex objects, manage the temporal relationships among different media and guarantee the synchronization as well as the continuity requirements during retrieval. In this thesis, we investigate the object-oriented database concepts and their ability to support multimedia applications and more specifically the support of real time audio/video media. A number of multimedia characteristics and require
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Azimi, Seyed Ali. "Construction and Evaluation of Persistent Storage for an Online Game's Statistics." Thesis, Umeå universitet, Institutionen för datavetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-85252.

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Online games are gradually getting more popular than traditional video games among players due to their competitive nature, low overhead of installation, and low storage/graphic requirements. Including features such as displaying the latest game logs, top scores and best players makes these games more exciting to the passionate gamers; and this excitement makes them spend more time, try harder to achieve higher scores and be on the top of the score lists. In game industry, the game logs and related scoring data are usually stored in relational databases which grow enormously in size and have t
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Chiossi, Luca. "High-Performance Persistent Caching in Multi- and Hybrid- Cloud Environments." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20089/.

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Il modello di lavoro noto come Multi Cloud sta emergendo come una naturale evoluzione del Cloud Computing per rispondere alle nuove esigenze di business delle aziende. Un tipico esempio è il modello noto come Cloud Ibrido dove si ha un Cloud Privato connesso ad un Cloud Pubblico per consentire alle applicazioni di scalare al bisogno e contemporaneamente rispondere ai bisogni di privacy, costi e sicurezza. Data la distribuzione dei dati su diverse strutture, quando delle applicazioni in esecuzione su un centro di calcolo devono utilizzare dati memorizzati remotamente, diventa necessario accede
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Sun, Ye. "Peer-assisted semi-persistent online storage and distribution : design, analysis and modeling /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20SUN.

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Mohan, Anoop. "Confidential and Resilient Store of Persistent Web Objects." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_theses/190.

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Persistent and secure store for web objects is an attractive feature in today?s web world and possess a good potential for exploration. Persistence of a storage mechanism refers to its ability to store an object for extremely long time periods. Resilience refers to its fault tolerance ability or its ability to retrieve the object completely even if a part of that object is lost due to any catastrophic failures like disk failure. It is also important that this storage mechanism is able to store this object in a secure manner. In the current world, usability of any storage mechanism is enhanced
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Chowdhury, Mohammad Ataur Rahman. "Rethinking the I/O Stack for Persistent Memory." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3572.

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Modern operating systems have been designed around the hypotheses that (a) memory is both byte-addressable and volatile and (b) storage is block addressable and persistent. The arrival of new Persistent Memory (PM) technologies, has made these assumptions obsolete. Despite much of the recent work in this space, the need for consistently sharing PM data across multiple applications remains an urgent, unsolved problem. Furthermore, the availability of simple yet powerful operating system support remains elusive. In this dissertation, we propose and build The Region System – a high-performance op
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Chatzistergiou, Andreas. "Library support for historical and persistent data structures in non-volatile memories." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25797.

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In the context of emerging non-volatile memory (NVM) where data structures can persist in-memory and are accessed through CPU loads and stores, we study how to efficiently manage data evolution. This is an extensively applied problem in both the scientific and business domains and is rapidly becoming an important component for a wider range of applications. We argue that the best way to achieve a smoother transition to the new programming model is to design a solution that is non-intrusive and generic i.e. not bound to a specific data model. We propose a novel library-level approach where the
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Balmau, Oana Maria. "Redesigning Persistent Key-Value Stores for Future Workloads, Hardware, and Performance Requirements." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/22913.

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Cloud storage stacks are being challenged by new workloads, new hardware, and new performance requirements. First, workloads evolved from following a read-heavy pattern (e.g., a static web-page) to a write-heavy profile where the read:write ratio is closer to 1:1 (e.g., as in the Internet of Things). Second, the hardware is undergoing rapid changes. The divide between fine-grained volatile memory and slow block-level storage is rapidly being bridged by the emerging byte-addressable non-volatile memory devices and the fast block-addressable NVMe SSDs (e.g., Intel Optane NVMe SSDs). Third, perf
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Iqbal, Muhammad Safdar. "The Multi-tiered Future of Storage: Understanding Cost and Performance Trade-offs in Modern Storage Systems." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/79142.

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In the last decade, the landscape of storage hardware and software has changed considerably. Storage hardware has diversified from hard disk drives and solid state drives to include persistent memory (PMEM) devices such as phase change memory (PCM) and Flash-backed DRAM. On the software side, the increasing adoption of cloud services for building and deploying consumer and enterprise applications is driving the use of cloud storage services. Cloud providers have responded by providing a plethora of choices of storage services, each of which have unique performance characteristics and pricing.
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Shankar, Dipti. "Designing Fast, Resilient and Heterogeneity-Aware Key-Value Storage on Modern HPC Clusters." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1563522337179638.

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Oukid, Ismail. "Architectural Principles for Database Systems on Storage-Class Memory." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-232482.

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Database systems have long been optimized to hide the higher latency of storage media, yielding complex persistence mechanisms. With the advent of large DRAM capacities, it became possible to keep a full copy of the data in DRAM. Systems that leverage this possibility, such as main-memory databases, keep two copies of the data in two different formats: one in main memory and the other one in storage. The two copies are kept synchronized using snapshotting and logging. This main-memory-centric architecture yields nearly two orders of magnitude faster analytical processing than traditional, disk
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Campello, Daniel Jose. "Optimizing Main Memory Usage in Modern Computing Systems to Improve Overall System Performance." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2568.

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Operating Systems use fast, CPU-addressable main memory to maintain an application’s temporary data as anonymous data and to cache copies of persistent data stored in slower block-based storage devices. However, the use of this faster memory comes at a high cost. Therefore, several techniques have been implemented to use main memory more efficiently in the literature. In this dissertation we introduce three distinct approaches to improve overall system performance by optimizing main memory usage. First, DRAM and host-side caching of file system data are used for speeding up virtual machine per
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Hunter, Russell I. "Improving associative memory in a network of spiking neurons." Thesis, University of Stirling, 2011. http://hdl.handle.net/1893/6177.

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In this thesis we use computational neural network models to examine the dynamics and functionality of the CA3 region of the mammalian hippocampus. The emphasis of the project is to investigate how the dynamic control structures provided by inhibitory circuitry and cellular modification may effect the CA3 region during the recall of previously stored information. The CA3 region is commonly thought to work as a recurrent auto-associative neural network due to the neurophysiological characteristics found, such as, recurrent collaterals, strong and sparse synapses from external inputs and plastic
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Hulse, David. "Store architecture in a persistant operating system /." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phh917.pdf.

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Sun, Ang. "Comparison of Java Persistence Layer Technologies." Thesis, Linnéuniversitetet, Institutionen för datavetenskap (DV), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-57667.

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As data and data structures grown more complex in computing, the task of storing and accessing such data efficiently also becomes more complex. Object-oriented programming languages such as Java have popularized the practice of using class-based objects and created the challenge of persisting these complex objects to storage systems such as databases which only store simple scalar values. This paper seeks to explore and compare a selected num-ber of popular persistence solutions for the Java language in their use and per-formance. This is done through researching, implementing and performance
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Martí, Fraiz Jonathan. "dataClay : next generation object storage." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/405907.

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Existing solutions for data sharing are not fully compatible with multi-provider contexts. Traditionally, providers offer their datasets through hermetic Data Services with restricted APIs. Therefore, consumers are compelled to adapt their applications to current functionality, and their chances of contributing with their own know-how are very limited. With regard to data management, current database management systems (DBMSs) that sustain these Data Services are designed for a single-provider scenario, forcing a centralized administration conducted by the single role of the database admini
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23

Ghourchian, Isabel. "Investigating Persistence Layers for Notifications." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254676.

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This work was carried out for Cisco at the Tail-f department. Cisco’s main focus is on network and telecommunication. The Tail-f department is the developer of a network service automatization product that allows customers to automate the process of adding, removing and manage their developed devices and services in their network. In the context of this network service, notifications will arise to notify operators when something has happened. The notifications are currently stored in a configurational database that is currently used for all the data in the network service. The customers have
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Ehsan, ul Haque Muhammad. "Persistence and Node FailureRecovery in Strongly Consistent Key-Value Datastore." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121281.

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Consistency preservation of replicated data is a critical aspect for distributed databaseswhich are strongly consistent. Further, in fail-recovery model each process also needs todeal with the management of stable storage and amnesia [1]. CATS is a key/value datastore which combines the Distributed Hash Table (DHT) like scalability and selforganization and also provides atomic consistency of the replicated items. However beingan in memory data store with consistency and partition tolerance (CP), it suffers frompermanent unavailability in the event of majority failure. The goals of this thesis
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Dai, Ping. "Réjection de perturbation sur un système multi-sources - Application à une propulsion hybride." Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2251/document.

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Ce mémoire porte sur l'étude d'un système de gestion d'énergie électrique dans un système multi-sources soumis à des perturbations exogènes. L'application visée est l'alimentation d'une propulsion hybride diesel/électrique équipée d'un système d'absorption des pulsations de couple. Les perturbations exogènes considérées peuvent être transitoires ou persistantes. Une perturbation transitoire correspond à une variation rapide du couple de charge, due par exemple à une accélération ou une décélération du véhicule. Une perturbation persistante provient du système de compensation des pulsations de
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Mahmood, Khalid. "Scalable Persisting and Querying of Streaming Data by Utilizing a NoSQL Data Store." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-223944.

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Relational databases provide technology for scalable queries over persistent data. In many application scenarios a problem with conventional relational database technology is that loading large data logs produced at high rates into a database management system (DBMS) may not be fast enough, because of the high cost of indexing and converting data during loading. As an alternative a modern indexed parallel NoSQL data store, such as MongoDB, can be utilized. In this work, MongoDB was investigated for the performance of loading, indexing, and analyzing data logs of sensor readings. To investigate
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Knaff, Alain. "Conception et réalisation d'un service de stockage fiable et extensible pour un système réparti à objets persistants." Phd thesis, Université Joseph Fourier (Grenoble), 1996. http://tel.archives-ouvertes.fr/tel-00004998.

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Cette thèse décrit la conception et la mise en oeuvre d'un service de stockage fiable et extensible. Les travaux ont été faits dans le cadre de Sirac, un système réparti à objets persistants. L'objectif de Sirac est de fournir des services pour le support d'objets persistants répartis et pour la construction d'applications réparties. Les deux idées qui ont dirigé cette étude sont la souplesse des services offerts et la coopération entre les sous-systèmes. La souplesse, rendue possible par la conception modulaire du système, améliore les performances, étant donné que les applications doivent se
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Khan, Firdaus. "Evaluation of the effects of long-term storage of bovine ear notch samples on the ability of two diagnostic assays to identify calves persistently infected with bovine viral diarrhoea virus." Diss., University of Pretoria, 2010. http://hdl.handle.net/2263/27075.

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Research aimed at optimizing diagnostic laboratory procedures is central to the development of effective bovine viral diarrhoea virus (BVDV) control programmes. BVDV is a single-stranded RNA virus that crosses the placenta to infect foetuses resulting in reproductive losses due to foetal death or persistently infected (PI) calves that usually die early in life. Persistently infected animals are widely accepted to be the primary reservoir of BVDV and the largest source of BVDV infection. Persistently infected animals that survive calfhood are at risk of developing mucosal disease in later life
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Knaff, Alain. "Conception et réalisation d'un service de stockage fiable et extensible pour un système réparti à objets persistants." Phd thesis, Grenoble 1, 1996. https://theses.hal.science/tel-00004998.

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Cette thèse décrit la conception et la mise en oeuvre d'un service de stockage fiable et extensible. Les travaux ont été faits dans le cadre de Sirac, un système réparti à objets persistants. L'objectif de Sirac est de fournir des services pour le support d'objets persistants répartis et pour la construction d'applications réparties. Les deux idées qui ont dirigé cette étude sont la souplesse des services offerts et la coopération entre les sous-systèmes. La souplesse, rendue possible par la conception modulaire du système, améliore les performances, étant donné que les applications doivent se
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Schubert, Chris, Georg Seyerl, and Katharina Sack. "Dynamic Data Citation Service-Subset Tool for Operational Data Management." MDPI, 2019. http://dx.doi.org/10.3390/data4030115.

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In earth observation and climatological sciences, data and their data services grow on a daily basis in a large spatial extent due to the high coverage rate of satellite sensors, model calculations, but also by continuous meteorological in situ observations. In order to reuse such data, especially data fragments as well as their data services in a collaborative and reproducible manner by citing the origin source, data analysts, e.g., researchers or impact modelers, need a possibility to identify the exact version, precise time information, parameter, and names of the dataset used. A manua
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Jumbo, Luis Oswaldo Viteri. "Atividade inseticida e de repelência de óleos essenciais de cravo e canela sobre o caruncho Acanthoscelides obtectus (Say)." Universidade Federal de Viçosa, 2013. http://locus.ufv.br/handle/123456789/3980.

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Made available in DSpace on 2015-03-26T13:30:48Z (GMT). No. of bitstreams: 1 texto completo.pdf: 754859 bytes, checksum: b3501a3bf9aa715323fdceb139bc976d (MD5) Previous issue date: 2013-12-13<br>Beans are the major source of protein in developing countries, and still the storage losses are estimated in 30% as a result of pests attack including Acanthoscelides obtectus (Say). Although chemical pesticides are effective to control these pests, their overuse can compromise the quality of food. Essential oils of vegetable origin are presented as an attractive alternative for the synthetic chemica
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Adibi, Ali. "Persistent holographic storage in photorefractive crystals." Thesis, 2000. https://thesis.library.caltech.edu/6200/2/Adibi_a_2000.pdf.

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The work presented in this thesis has been focused on solving the most important and long-lasting problem of destructive read-out in holographic recording in photorefractive crystals. Several interesting methods for solving this problem were proposed and demonstrated by researchers for more than two decades. However, none of them were practical for read / write applications. The most promising all-optical method, which is still being pursued by some researchers, was two-step recording. However, the method suffers from low sensitivity and dynamic range, even in the optimized conditions. Furth
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C, S. Arun. "Storage and Querying of Large Persistent Arrays." Thesis, 2011. http://raiith.iith.ac.in/596/1/CS09G001.pdf.

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The scientic and analytical applications today are increasingly becoming data in- tensive. Many such applications deal with data that is multidimensional in nature. Traditionally, relational database systems have been used by many data intensive application, and relational paradigm has proved to be both natural and ecient. However, for multidimensional data, when the number of dimensions becomes large, relational databases are inecient both in terms of storage and query response time. In this thesis, we explore linearised storage, and indexed and skiplist based retrieval on persistent a
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HSIAO, YU-TING, and 蕭宇婷. "Hybrid Data Reliability Enhancement Strategies for Storage Systems based on Persistent Memories." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/9tv388.

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碩士<br>國立臺北科技大學<br>電子工程系<br>107<br>With the continuous upscaling of storage density and downsizing of memory cells, the data error rates have become a key issue in the designs of modern storage systems. Although there have been a number of excellent reliability-enhancement technologies proposed, such as redundancy and replication, they might introduce considerable overheads on the access performance and space utilization of storage systems. To address this problem, in this thesis we shall explore software-defined methods to enhance the data reliability of storage devices based on popular persis
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Borisov, Nedyalko Krasimirov. "Integrated Management of the Persistent-Storage and Data-Processing Layers in Data-Intensive Computing Systems." Diss., 2012. http://hdl.handle.net/10161/5806.

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<p>Over the next decade, it is estimated that the number of servers (virtual and physical) in enterprise datacenters will grow by a factor of 10, the amount of data managed by these datacenters will grow by a factor of 50, and the number of files the datacenter has to deal with will grow by a factor of 75. Meanwhile, skilled information technology (IT) staff to manage the growing number of servers and data will increase less than 1.5 times. Thus, a system administrator will face the challenging task of managing larger and larger numbers of production systems. We have developed solutions to mak
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Vieira, Pedro Miguel Lima de Jesus. "A Persistent Publish/Subscribe System for Mobile Edge Computing." Master's thesis, 2018. http://hdl.handle.net/10362/71124.

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In recent times, we have seen an incredible growth of users adopting mobile devices andwearables, and while the hardware capabilities of these devices have greatly increased year after year, mobile communications still remain a bottleneck for most applications. This is partially caused by the companies’ cloud infrastructure, which effectively represents a large scale communication hub where all kinds of platforms compete with each other for the servers’ processing power and channel throughput. Additionally, wireless technologies used in mobile environments are unreliable, slow and conges
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Oukid, Ismail. "Architectural Principles for Database Systems on Storage-Class Memory." Doctoral thesis, 2017. https://tud.qucosa.de/id/qucosa%3A30750.

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Database systems have long been optimized to hide the higher latency of storage media, yielding complex persistence mechanisms. With the advent of large DRAM capacities, it became possible to keep a full copy of the data in DRAM. Systems that leverage this possibility, such as main-memory databases, keep two copies of the data in two different formats: one in main memory and the other one in storage. The two copies are kept synchronized using snapshotting and logging. This main-memory-centric architecture yields nearly two orders of magnitude faster analytical processing than traditional, disk
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(6622382), Yang Zhang. "Latency-Aware Pricing in the Cloud Market." Thesis, 2019.

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<div>Latency is regarded as the Achilles heel of cloud computing. Pricing is an essential component in the cloud market since it not only directly affects a cloud service provider's (CSP's) revenue but also a user's budget. This dissertation investigates the latency-aware pricing schemes that provide rigorous performance guarantees for the cloud market. The research is conducted along the following major problems as summarized below:</div><div><br></div><div>First, we will address a major challenge confronting the CSPs utilizing a tiered storage (with cold storage and hot storage) architecture
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Blackburn, Stephen. "Persistent store interface : a foundation for scalable persistent system design." Phd thesis, 1998. http://hdl.handle.net/1885/145415.

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Jiang, Yue-Lin, and 江岳霖. "SQL for Polyglot Persistence Store." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3qqgqq.

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碩士<br>國立臺中科技大學<br>資訊工程系碩士班<br>106<br>Due to recent advances in Internet of Things technologies and production of big data, millions of data entries are generated every day. In response to the massive amount of data generated, however, traditional data analysis and storage face great challenges, such as the need for a large amount of storage space, data access (storage and retrieval), and the system’s computing power. Traditional methods for storing data have primarily consisted of relational databases, mainly because relational databases comply with ACID guidelines, which ensure the correctnes
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Hulse, David 1971. "Store architecture in a persistant operating system / David Hulse." Thesis, 1998. http://hdl.handle.net/2440/19125.

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Hulse, David 1971. "Store architecture in a persistant operating system / David Hulse." 1998. http://hdl.handle.net/2440/19125.

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Bibliography: leaves 207-214.<br>viii, 214 leaves : ill. ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Computer Science, 1998
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Lang, Brian J. "The effect of fertility and harvest management on yield, persistence, reserve carbohydrate storage, regrowth, and quality of alfalfa and red clover." 1985. http://catalog.hathitrust.org/api/volumes/oclc/12777076.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1985.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 145-155).
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