6,722 research outputs found

    Resitance Art and Urban Space: A Strategic Comparison of Artistic Urban Space Usage in Buenos Aires and San Francisco

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    In the early Twentieth century the Mexican Muralism movement reached two important port cities: San Francisco and Buenos Aires. The artists in these cities quickly adopted the usage of public art as means to insert political dialogue into the everyday life of their citizens. Throughout the years the resistance art in these cities has evolved in parallel, shaped by their dynamic histories of social and political change. This paper critically compares the evolutions of resistance art in Buenos Aires and San Francisco over the past twenty years. It does so by analyzing the public art archives of local collectives in conjunction with timely newspaper articles. Using interviews with various collectives and artists this paper is able to holistically analyze the impact and form of resistance art evolutions in these cities. By exploring the evolution and experience of resistance art at a phenomenological level I find that the socio- political histories of these cities have a profound effect on resistance art. Additionally, I found that the organization and monopolization of urban space can directly impact the provocativeness of these experiences. As we move forward, I find that is it imperative for the everyday citizen to participate in the critique of our everyday encounters with resistance art in urban spaces, questioning what these structures are telling us implicitly and explicitly about our cities

    Determination of audit activity in modern conditions

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    The task of compulsory audit of financial statements is the provision of reasonable assurance that is accepted and performed by the entity in accordance with the requirements of this Law and international standards of audit by checking the financial statements or consolidated financial statements in order to express an independent opinion of the auditor on its compliance with all significant aspects and compliance with the requirements of international financial reporting standards or national accounting (statutory) standards and laws of Ukraine

    Average cosmic evolution in a lumpy universe

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    The procedure of averaging and coarse-graining of the gravitational field equations with sources are investigated in both Newtonian gravity and in general relativity. In particular the schemes of Buchert and Korzyńnski are examined and compared in both situations. In Newtonian gravity it is shown how to calculate the tidal tensor given boundary conditions for it and how to average it given those boundary conditions. It is also shown that one can always choose boundary conditions to make the average tidal tensor vanish or take any value. The problems of coarse-graining tensors in general relativity are critically examined, and a set of relevant conditions for such a procedure are enumerated. Korzyńnski's covariant coarse-graining procedure is reviewed and applied to a particular case. For the case of the Lemaître-Tolman-Bondi model it is shown that the backreaction was always zero for a centred spherical coarse-graining domain. Wiltshire's timescape model, which applies a particular observational interpretation to Buchert's averaging scheme, is reviewed. The dust timescape model of Wiltshire is extended by the addition of a homogeneous radiation source. This model is solved numerically and it is shown not to vary significantly from the dust model since the redshift z ≈ 30, which is when the backreaction and radiation density are equal. The model is integrated back in time from the surface of last scattering with results indicating a breakdown in aspects of the model at early times

    Usage Pattern Recognition in Student Activities

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    Proceedings of: 6th European Conference of Technology Enhanced Learning, EC-TEL 2011, Palermo, Italy, September 20-23, 2011.This paper presents an approach of collecting contextualized attention metadata combined from inside as well as outside a LMS and analyzing them to create feedback about the student activities for the teaching staff. Two types of analyses were run on the collected data: first, key actions were extracted to identify usage patterns and tendencies throughout the whole course and then usage statistics and patterns were identified for some key actions in more detail. Results of both analyses were visualized and presented to the teaching staff for evaluation.The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007- 2013) under grant agreement no 231396 (ROLE project). Work was also partially funded by the Learn3 project (TIN2008-05163/TSI), the eMadrid project (S2009/TIC-1650), and the Acción Integrada DE2009-0051

    Slope Failure in Loess. A detailed investigation Allandale, Banks Peninsula

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    This study investigates a slope failure complex in loess at Allandale, Lyttelton Harbour. Literature relevant to the slope stability and strength of Banks Peninsula loessial soils is reviewed. Laboratory and in situ strength testing shows that both C and P layer loess in a partially saturated state displays a significant reduction in undrained shear strength with increasing degree of saturation. Strength reduction can be attributed to reduced pore water tension due to capillary suction which results from an increased degree of saturation. The moisture controlled strength component in partially saturated loess can be defined by any two of dry density, moisture content and degree of saturation. When comparing loess C and P layer remoulded strengths with peak strengths, the P layer is significantly more sensitive to remoulding than C layer. Drained direct shear testing of C layer loess produces remoulded and peak strength parameters of c'=O, Ø'=28.4° and c'=6kPa, Ø '=28.4° respectively. Drained direct shear testing of P layer loess produced remoulded and peak shear strength parameters of c'=O, Ø '=28.4° and c'=20kPa, Ø '=28.4° respectively. The slope failure complex investigated has been formed by an earthflow initiated by a tension crack in C layer loess (which acts as an unconfined leaky aquifer). Subsequent retrogressive upslope and lateral migration of the slope failure complex involves "turfmat slides" in S layer loess which also acts as an unconfined leaky aquifer, and more tension crack initiated earth flows in C layer loess. Back analysis suggests both forms of slope movement may have failed by translational sliding at the base of their respective loess layer, with a piezometric level coincident with the ground surface. Mobilisation of the "turfmat slide", requires drained remoulded shear strengths, whereas mobilisation of the earth flow is more likely to involve drained peak shear strengths

    α4β1-dependent adhesion strengthening under mechanical strain is regulated by paxillin association with the α4-cytoplasmic domain

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    The capacity of integrins to mediate adhesiveness is modulated by their cytoplasmic associations. In this study, we describe a novel mechanism by which α4-integrin adhesiveness is regulated by the cytoskeletal adaptor paxillin. A mutation of the α4 tail that disrupts paxillin binding, α4(Y991A), reduced talin association to the α4β1 heterodimer, impaired integrin anchorage to the cytoskeleton, and suppressed α4β1-dependent capture and adhesion strengthening of Jurkat T cells to VCAM-1 under shear stress. The mutant retained intrinsic avidity to soluble or bead-immobilized VCAM-1, supported normal cell spreading at short-lived contacts, had normal α4-microvillar distribution, and responded to inside-out signals. This is the first demonstration that cytoskeletal anchorage of an integrin enhances the mechanical stability of its adhesive bonds under strain and, thereby, promotes its ability to mediate leukocyte adhesion under physiological shear stress conditions

    Технология зачистки резервуаров от донных отложений в зимнее время

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    Объектом исследования являются современные технологии удаления твердых отложений из нефтяных резервуаров. Цель работы – анализ современных методов очистки резервуаров вертикальных стальных от донных отложений с технико-экономическим обоснованием наиболее оптимального метода. В процессе исследования проводилось изучение причин и процессов осадконакопления в нефтяных резервуарах, изучались возможности современных мобильных комплексов для очистки нефтяных резервуаров, выявлялись их достоинства и недостатки, а также проводилось их сравнение с такими традиционными методами очистки как ручной и механизированный. Степень внедрения: реальная. Область применения:резервуарные парки нефтеперекачивающих станций с резервуарами типа РВС объёмом до 30000 м3.The object of the study is the modern technology of removal of solid deposits from oil tanks. The purpose of the work is to analyze modern methods of cleaning vertical steel tanks from bottom sediments with a feasibility study of the most optimal method. In the course of the study, the causes and processes of sedimentation in oil tanks were studied, the possibilities of modern mobile systems for cleaning oil tanks were studied, their advantages and disadvantages were revealed, and they were compared with traditional methods of cleaning such as manual and mechanized. Degree of implementation: real. Field of application: tank farms of oil pumping stations with tanks of PBC type up to 30,000 m3
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