96 research outputs found

    Party for One: A Monologue of The Importance of Oneself Through Book Arts

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    This thesis explores the importance of oneself through sexuality, context, and introspection in the art of book arts. I work with memories, imagination, and consciousness in the form of book arts to express the importance of the self from my personal experience. Through the use of colors, materials, spatial compositions, and other visual components to manifest the content of my art, I want to illuminate the awareness of otherness including gender issues and an individual\u27s vulnerability. Playing with the texts of Chinese and English, I intend to create narratives with languages, images, and other mixed media. In addition to crafting traditional bound books with handmade paper and assembling sculptural book-like objects, I also expand the idea of a book into space. With my books, I share my experience of being a loner, yet solitude helps me to be my better self. Through sharing my personal stories, I hope to invite my audience to empathize themselves with their sympathy and invoke a sense of the importance of the self

    Quasar accretion disk sizes from continuum reverberation mapping in the DES standard-star fields

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    Artículo escrito por un elevado número de autores, sólo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiereMeasurements of the physical properties of accretion disks in active galactic nuclei are important for better understanding the growth and evolution of supermassive black holes. We present the accretion disk sizes of 22 quasars from continuum reverberation mapping with data from the Dark Energy Survey (DES) standard-star fields and the supernova C fields. We construct continuum light curves with the griz photometry that span five seasons of DES observations. These data sample the time variability of the quasars with a cadence as short as 1 day, which corresponds to a rest-frame cadence that is a factor of a few higher than most previous work. We derive time lags between bands with both JAVELIN and the interpolated cross-correlation function method and fit for accretion disk sizes using the JAVELIN thin-disk model. These new measurements include disks around black holes with masses as small as ∼107 M o˙, which have equivalent sizes at 2500 Å as small as ∼0.1 lt-day in the rest frame. We find that most objects have accretion disk sizes consistent with the prediction of the standard thin-disk model when we take disk variability into account. We have also simulated the expected yield of accretion disk measurements under various observational scenarios for the Large Synoptic Survey Telescope Deep Drilling Fields. We find that the number of disk measurements would increase significantly if the default cadence is changed from 3 days to 2 days or 1 dayThe DES data management system is supported by the National Science Foundation under grant Nos. AST-1138766 and AST1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013), including ERC grant agreements 240672, 291329, and 30647

    Twinkle: A fast resource provisioning mechanism for internet services

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    A key benefit of Amazon EC2-style cloud computing service is the ability to instantiate a large number of virtual machines (VMs) on the fly during flash crowd events. Most existing research focuses on the policy decision such as when and where to start a VM for an application. In this paper, we study a different problem: how can the VMs and the applications inside be brought up as quickly as possible? This problem has not been solved satisfactorily in existing cloud services. We develop a fast start technique for cloud applications by restoring previously created VM snapshots of fully initialized application. We propose a set of optimizations, including working set estimation, demand prediction, and free page avoidance, that allow an application to start running with only partially loaded memory, yet without noticeable performance penalty during its subsequent execution. We implement our system, called Twinkle, in the Xen hypervisor and employ the two-dimensional page walks supported by the latest virtualization technology. We use the RUBiS and TPC-W benchmarks to evaluate its performance under flash crowd and failure over scenarios. The results indicate that Twinkle can provision VMs and restore the QoS significantly faster than the current approaches.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000297374700146&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Computer Science, Hardware & ArchitectureComputer Science, Theory & MethodsEngineering, Electrical & ElectronicTelecommunicationsEICPCI-S(ISTP)1

    ДІАГНОСТИКА РІВНІВ АДАПНОВАНОСТІ ІНОЗЕМНИХ СТУДЕНТІВ ДО НАВЧАННЯ В УКРАЇНСЬКИХ УНІВЕРСИТЕТАХ

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    The article presents the essence of adaptation of foreign students to the structure of education in Ukrainian universities. The criteria, indicators, levels of adaptation of foreign students to study in Ukrainian universities. Arrange a system diagnostic tools to determine the level of adaptation of foreign students to study in Ukrainian universities.В статье представлена сущность, структура адаптированности иностранных студентов к обучению в украинских университетах. Определены критерии, показатели, уровни адаптированности иностранных студентов к обучению в украинских университетах. Упорядочена система диагностических методик для определения уровня адаптированности иностранных студентов к обучению в украинских университетах.У статті охарактеризована сутність, структура адаптованості іноземних студентів до навчання в українських університетах. Визначено критерії, показники, рівні адаптованості іноземних студентів до навчання в українських університетах. Упорядковано систему діагностичних методик для визначення рівнів адаптованості іноземних студентів до навчання в українських університетах

    HT2008-56418 THERMAL WAVE BASED MEASUREMENT OF LIQUID THERMAL CONDUCTIVITIES

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    ABSTRACT This work develops an experimental technique capable of determining thermal conductivity of liquids with application to nanofluids. A periodic current passing through a thin stainless steel strip generates a periodic Joule heating source and an infrared detector measures the temperature response at the front surface of the stainless steel strip. An open chamber is machined out of a delrin plate with the stainless steel strip acting as the sealing cover. This resulting closed chamber contains the test liquid. The phase and magnitude of the temperature response were measured using a lock-in amplifier at various frequencies from 22 to 502 Hz. A one-dimensional, two-layered transient heat conduction model was developed to predict the temperature response on the front surface of the stainless steel strip. This temperature response, including phase and magnitude, is a function of the thermal properties of the liquid. The phase information shows high sensitivity to thermal properties of the liquid layer and is employed to match experimental data to find thermal conductivities. The measured thermal conductivities of water and ethylene glycol agree well with data from the literature and support the validity of this measurement technique. An aqueous fluid consisting of gold nanoparticles was tested. Anomalous thermal conductivity enhancement was observed. Our measurement results also show a divergence of thermal transport behavior between nanofluids and pure liquids. This suggests the need to carefully examine the role of measurement techniques in the study of nanofluid heat transfer phenomena

    Quasar Accretion Disk Sizes from Continuum Reverberation Mapping in the DES Standard-star Fields

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    Measurements of the physical properties of accretion disks in active galactic nuclei are important for better understanding the growth and evolution of supermassive black holes. We present the accretion disk sizes of 22 quasars from continuum reverberation mapping with data from the Dark Energy Survey (DES) standard-star fields and the supernova C fields. We construct continuum light curves with the griz photometry that span five seasons of DES observations. These data sample the time variability of the quasars with a cadence as short as 1 day, which corresponds to a rest-frame cadence that is a factor of a few higher than most previous work. We derive time lags between bands with both JAVELIN and the interpolated cross-correlation function method and fit for accretion disk sizes using the JAVELIN thin-disk model. These new measurements include disks around black holes with masses as small as ∼107 M o˙, which have equivalent sizes at 2500 Å as small as ∼0.1 lt-day in the rest frame. We find that most objects have accretion disk sizes consistent with the prediction of the standard thin-disk model when we take disk variability into account. We have also simulated the expected yield of accretion disk measurements under various observational scenarios for the Large Synoptic Survey Telescope Deep Drilling Fields. We find that the number of disk measurements would increase significantly if the default cadence is changed from 3 days to 2 days or 1 day. © 2020. The American Astronomical Society. All rights reserved
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