Database and System Design for Emerging Storage Technologies

Emerging storage technologies offer an alternative to disk that is durable and allows faster data access. Flash memory, made popular by mobile devices, provides block access with low latency random reads. New nonvolatile memories (NVRAM) are expected in upcoming years, presenting DRAM-like performance alongside persistent storage. Whereas both technologies accelerate data accesses due to increased raw speed, used merely as disk replacements they may fail to achieve their full potentials. Flash’s asymmetric read/write access (i.e., reads execute faster than writes opens new opportunities to optimize Flash-specific access. Similarly, NVRAM’s low latency persistent accesses allow new designs for high performance failure-resistant applications. This dissertation addresses software and hardware system design for such storage technologies. First, I investigate analytics query optimization for Flash, expecting Flash’s fast random access to require new query planning. While intuition suggests scan and join selection should shift between disk and Flash, I find that query plans chosen assuming disk are already near-optimal for Flash. Second, I examine new opportunities for durable, recoverable transaction processing with NVRAM. Existing disk-based recovery mechanisms impose large software overheads, yet updating data in-place requires frequent device synchronization that limits throughput. I introduce a new design, NVRAM Group Commit, to amortize synchronization delays over many transactions, increasing throughput at some cost to transaction latency. Finally, I propose a new framework for persistent programming and memory systems to enable high performance recoverable data structures with NVRAM, extending memory consistency with persistent semantics to introduce memory persistency.PhDComputer Science & EngineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/107114/1/spelley_1.pd

Optimization Tools for ConvNets on the Edge

L'abstract è presente nell'allegato / the abstract is in the attachmen

Advanced scanners and imaging systems for earth observations

Assessments of present and future sensors and sensor related technology are reported along with a description of user needs and applications. Five areas are outlined: (1) electromechanical scanners, (2) self-scanned solid state sensors, (3) electron beam imagers, (4) sensor related technology, and (5) user applications. Recommendations, charts, system designs, technical approaches, and bibliographies are included for each area

Contemporary mormon literature: Phyllis Barber's writing

612 p.En esta tesis, se presenta un análisis de la obra literaria de Phyllis Barber desde distintos puntos de vista para así acceder a la complejidad de su propuesta artística y situarla en un contexto histórico y social que contempla la realidad cultural de la comunidad mormona en la que esta escritora creció y se educó. Para ello, este trabajo se completa con dos introducciones en las que se presenta la historia general y literaria de la comunidad religiosa de la Iglesia de los Santos de los Últimos Días, más conocida como Iglesia Mormona. En esas dos introducciones, se sitúa la obra de la escritora, enclavándola dentro de un contexto literario amplio que revela ciertas características que luego se aplicarán al análisis de la obra. Este análisis literario se ejerce desde tres puntos de vista distintos, atendiendo a las características culturales, sociales y literarias de la obra y de la autora. Así, se propone un primer acercamiento que se basa en una metodología ecocrítica, ya que la escritora, en su obra, demuestra inquietudes e influencias con respecto al espacio físico en el que emplaza su obra. Un segundo acercamiento, atiende a las características sociales y culturales de su educación mormona. El tercer punto de vista explora la obra de esta artista por su condición de mujer, aplicando teorías de análisis literario propias de la crítica feminista. Estos puntos de vista variados pretenden, por un lado, condensar un análisis completo y riguroso de la totalidad de su obra, pero, por otra parte, esta tesis aspira a plasmar la complejidad y el carácter paradójico de una obra literaria que refleja ciertas ansiedades vitales y literarias significativas, propias de una concepción de la identidad como algo en proceso, diverso y debatible

Jean Epstein

Filmmaker and theoretician Jean Epstein profoundly influenced film practice, criticism and reception in France during the 1920s and well beyond. His work not only forms the crux of the debates of his time, but also remains key to understanding later developments in film practice and theory. Epstein' s film criticism is among the most wide-ranging, provocative and poetic writing about cinema and his often breathtaking films offer insights into cinema and the experience of modernity. This collection - the first comprehensive study in English of Epstein's far-reaching influence - arrives as several of the concerns most central to Epstein' s work are being reexamined, including theories of perception, realism, and the relationship between cinema and other arts. The volume also includes new translations from every major theoretical work Epstein published, presenting the widest possible historical and contextual range of Epstein' s work, from his beginnings as a biology student and literary critic to his late film projects and posthumously published writings.Filmmaker en -theoreticus Jean Epstein beïnvloedde sterk de filmpraktijk, -kritiek en -receptie in Frankrijk en ver daarbuiten tijdens de jaren twintig van de vorige eeuw. Zijn werk vormde niet alleen de kern van de debatten in die tijd, maar is ook een sleutel voor het begrijpen van latere ontwikkelingen in de filmpraktijk en -theorie. Epsteins filmkritieken zijn uiteenlopende, uitdagende en poëtisch geschreven teksten, en zijn vaak adembenemende films bieden belangrijke en moderne inzichten in de cinema. Dit boek verschijnt op het moment dat een aantal van de thema' s die centraal staan in het werk van Epstein opnieuw wordt onderzocht, met inbegrip van de theorie van de waarneming, realisme en de relatie tussen cinema en de andere kunsten. De kritische essays vormen een waardevolle inleiding tot het creatieve oeuvre van Epstein