1,023 research outputs found
Propagation of hydrodynamic interactions between particles in a compressible fluid
Hydrodynamic interactions are transmitted by viscous diffusion and sound
propagation: the temporal evolution of hydrodynamic interactions by both
mechanisms is studied by direct numerical simulation in this paper. The
hydrodynamic interactions for a system of two particles in a fluid are
estimated by the velocity correlation of the particles. In an incompressible
fluid, hydrodynamic interactions propagate instantaneously at the infinite
speed of sound, followed by the temporal evolution of viscous diffusion. On the
other hand, in a compressible fluid, sound propagates at a finite speed, which
affects the temporal evolution of the hydrodynamic interactions by the order of
magnitude relation between the time scales of viscous diffusion and sound
propagation. The hydrodynamic interactions are characterized by introducing the
ratio of these time scales as an interactive compressibility factor.Comment: 12 pages, 8 figure
Direct numerical simulation of dispersed particles in a compressible fluid
We present a direct numerical simulation method for investigating the
dynamics of dispersed particles in a compressible solvent fluid. The validity
of the simulation is examined by calculating the velocity relaxation of an
impulsively forced spherical particle with a known analytical solution. The
simulation also gives information about the fluid motion, which provides some
insight into the particle motion. Fluctuations are also introduced by random
stress, and the validity of this case is examined by comparing the calculation
results with the fluctuation-dissipation theorem.Comment: 7 pages, 5 figure
Scoring lexical entailment with a supervised directional similarity network
Scoring Lexical Entailment with a Supervised Directional Similarity NetworkERC
Nvidi
Automatic text scoring using neural networks
Automated Text Scoring (ATS) provides
a cost-effective and consistent alternative
to human marking. However, in order
to achieve good performance, the predictive
features of the system need to
be manually engineered by human experts.
We introduce a model that forms
word representations by learning the extent
to which specific words contribute to
the text’s score. Using Long-Short Term
Memory networks to represent the meaning
of texts, we demonstrate that a fully
automated framework is able to achieve
excellent results over similar approaches.
In an attempt to make our results more
interpretable, and inspired by recent advances
in visualizing neural networks, we
introduce a novel method for identifying
the regions of the text that the model has
found more discriminative.This is the accepted manuscript. It is currently embargoed pending publication
Grasping the Finer Point: A Supervised Similarity Network for Metaphor Detection
The ubiquity of metaphor in our everyday communication makes it an important problem for natural language understanding.
Yet, the majority of metaphor processing systems to date rely on hand engineered features and there is still no consensus in the field as to which features are optimal for this task. In this paper, we present the first deep learning architecture designed to capture metaphorical composition. Our results demonstrate that it outperforms the existing approaches in the metaphor identification task
Pembuatan Pc Game Endless Run “Zombie Run” Menggunakan Arduino Pro Micro Dan Gy-521 Sebagai Kontroler Gyroscope
“Zombie Run” is an endless running game that must played by two players on one computer or notebook and must be played using Arduino Pro Micro and GY-521 as controller. This game developed using Unity 3D game engine and controller developed using Arduino SDK. Player have to avoid as many obstacles to create highest score. Player can get uniquely exciting experience by tilting controller and pressing button in the controller to make character move. Testing has been done using blackbox method, alpha testing, and beta testing. The result show that this game have interesting concept by two players and gyroscope controlle
Contemporary marginal literature and poetry in Brazil : the periphery in the voice of Sérgio Vaz and Ferréz
In Brazil, the urban segregation is one of the most important aspects of social inequality. This segregation, along with a political-social feeling coupled with the marginal positioning of some social groups, culminated in the emergence of an independent cultural production network whose novelty consists in the representation and dissemination of local identity. Marginal Literature is one of these manifestations, in this type of literature, the authors of the works are marginalized by a society that does not give them ears or voice. They found in writing a way to show their revolt and the search for social and ethnic recognition. The purpose of this article is to present a little of this literary production of the last 20 years in Brazil, its peculiarities, forms and themes.No Brasil, a segregação urbana é uma das faces mais importantes da desigualdade social e parte promotora da mesma. Essa segregação, junto a um sentimento político-social, unido ao posicionamento marginal de alguns grupos sociais, culminou no surgimento de uma rede de produção cultural independente cuja novidade consiste na representação e divulgação da identidade local. Dentro destas manifestações encontra-se a Literatura Marginal. Nesse tipo de literatura, os próprios autores das obras são marginalizados por uma sociedade que não lhes dá ouvidos ou voz para falar e, na forma de escrever, encontraram um modo de mostrar sua revolta e a busca por reconhecimento social e étnico. O objetivo deste artigo é apresentar um pouco desta produção literária dos últimos 20 anos no Brasil, suas peculiaridades de formas e temas
Novos espaços da literatura marginal brasileira
No Brasil, a segregação urbana é uma das faces mais importantes da desigualdade
social e parte promotora da mesma. Nestas áreas de segregação, além de todos os
problemas subjacentes, como a urbanização precária e a falta das condições mínimas
para manter uma vida salubre, há também a ausência de equipamentos de mercado
cultural. Para suprir essa necessidade, há pouco mais de duas décadas, temos uma
grande proliferação das artes e da literatura marginal ou periférica, na qual a produção
e manifestação de artistas e grupos periféricos, chega para preencher esses espaços.
Nos dias atuais, essa expressão cultural no Brasil é um exemplo de resistência política
e produções de novos sentidos políticos. As manifestações culturais suburbanas
mostram algumas propostas e mudanças na sua estrutura tanto na criação como na
divulgação da arte. Este artigo apresenta o trabalho proferido na conferência 100 anos
dos Estudos Românicos em Zagreb: tradição, contactos, perspectivas e tem por objetivo esboçar
brevemente este movimento tão amplo e rico da atualidade, colocando, desta
forma, em discussão os limites das novas fronteiras literárias no Brasil
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