397 research outputs found
Experimental results and modelling of humidity control strategies for greenhouses in continental and coastal settings in the Mediterranean region. I: Experimental results and model development
Experimental strategies for controlling humidity were compared in a greenhouse sited in Madrid, a continental site in the Mediterranean region. Small roof window apertures significantly reduced the relative humidity with only a limited increase in associated energy consumption. A simplified climate model with four energy exchange terms (heating, insolation, losses through structure, and losses through windows) and three mass exchange terms (evapotranspiration, losses through structure, and losses through windows) was validated, allowing relative humidity to be predicted with an error of < 9%
Experimental results and modelling of humidity control strategies for greenhouses in continental and coastal settings in the Mediterranean region. II: Modelling of strategies
Strategies for humidity control —with and without heating— were evaluated via simulations performed with a previously developed model (see accompanying paper, this issue, part I). With heating, the best strategy combined the use of a humidity setpoint with step control of the roof window, increasing the ventilation in line with the outside temperature. Without heating, the best strategy again combined the use of a humidity setpoint with step control of the roof window, but required ventilation to be increased in line with the inside air temperature
Intervening factors in language therapy with autistic children
Estudos recentes mencionam que a incidência dos distúrbios do espectro autístico chega a 1%. Isso implica na necessidade de identificação urgente de modelos de intervenção eficazes, bem como dos fatores que podem interferir nesses processos. O objetivo deste artigo é descrever três anos de processos de terapia de linguagem de três crianças com diagnósticos incluídos no espectro do autismo com diferentes características de desenvolvimento e diferentes respostas ao processo terapêutico. Todas as crianças são atendidas em sistema ambulatorial, uma vez por semana, num serviço especializado, por fonoaudiólogas pós-graduandas na área há aproximadamente seis meses antes dos primeiros relatos apresentados. Os casos apresentados evidenciam a diversidade do fenótipo do autismo. Embora não fosse o objetivo deste estudo, fica aparente a referencia a três diferentes quadros incluídos no espectro do autismo. Desta forma, os processos de intervenção foram objeto de sutis ajustes às necessidades e possibilidades de cada uma das crianças. Todas as crianças tiveram progressos importantes em suas manifestações. A análise longitudinal individualizada de processos de intervenção terapêutica permite a abordagem de aspectos associados que podem ser determinantes nos resultados e que exigem abordagem consistente.Recent studies state that the incidence of autism spectrum disorders is 1% of the infantile population. It implies the need of urgent identification of efficient intervention proposals as well as of the factors that may intervene in these processes. The aim of this study is to describe three years of language therapy processes of three children diagnosed within the autism spectrum with different developmental characteristics and different responses to the therapeutic process. All the children were attending a specialized ambulatory program once a week. The language therapists were post-graduate students in the field and the therapeutic intervention started approximately six months prior to the beginning of the study. The children presented evidence of the diversity of the autism phenotype. Although it was not the purpose of this study, the reference to the three different features of the autism spectrum is clear. This way, the intervention processes received subtle adjustments to each child's specific needs and possibilities. All children had significant progress in their manifestations. The longitudinal individual analysis of therapeutic intervention processes allows the identification of associate process that might be determinant to the results and that demand consistent approaches
Highlights from the Pierre Auger Observatory
The Pierre Auger Observatory is the world's largest cosmic ray observatory.
Our current exposure reaches nearly 40,000 km str and provides us with an
unprecedented quality data set. The performance and stability of the detectors
and their enhancements are described. Data analyses have led to a number of
major breakthroughs. Among these we discuss the energy spectrum and the
searches for large-scale anisotropies. We present analyses of our X
data and show how it can be interpreted in terms of mass composition. We also
describe some new analyses that extract mass sensitive parameters from the 100%
duty cycle SD data. A coherent interpretation of all these recent results opens
new directions. The consequences regarding the cosmic ray composition and the
properties of UHECR sources are briefly discussed.Comment: 9 pages, 12 figures, talk given at the 33rd International Cosmic Ray
Conference, Rio de Janeiro 201
Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter
Data collected by the Pierre Auger Observatory through 31 August 2007 showed
evidence for anisotropy in the arrival directions of cosmic rays above the
Greisen-Zatsepin-Kuz'min energy threshold, \nobreak{eV}. The
anisotropy was measured by the fraction of arrival directions that are less
than from the position of an active galactic nucleus within 75 Mpc
(using the V\'eron-Cetty and V\'eron catalog). An updated
measurement of this fraction is reported here using the arrival directions of
cosmic rays recorded above the same energy threshold through 31 December 2009.
The number of arrival directions has increased from 27 to 69, allowing a more
precise measurement. The correlating fraction is , compared
with expected for isotropic cosmic rays. This is down from the early
estimate of . The enlarged set of arrival directions is
examined also in relation to other populations of nearby extragalactic objects:
galaxies in the 2 Microns All Sky Survey and active galactic nuclei detected in
hard X-rays by the Swift Burst Alert Telescope. A celestial region around the
position of the radiogalaxy Cen A has the largest excess of arrival directions
relative to isotropic expectations. The 2-point autocorrelation function is
shown for the enlarged set of arrival directions and compared to the isotropic
expectation.Comment: Accepted for publication in Astroparticle Physics on 31 August 201
PENGARUH TINGKAT PENGHASILAN, KINERJA BIROKRASI, SANKSI PAJAK, DAN SISTEM SAMSAT DRIVE THRU TERHADAP KEPATUHAN WAJIB PAJAK KENDARAAN BERMOTOR DI SAMSAT MEDAN UTARA
Penelitian ini bertujuan untuk melakukan pengujian kembali faktor-faktor
yang mempengaruhi kepatuhan wajib pajak kendaraan bermotor, yaitu tingkat
penghasilan, kinerja birokrasi, sanksi pajak dan sistem SAMSAT drive thru
terhadap kepatuhan wajib pajak kendaraan bermotor di SAMSAT Medan Utara.
Jenis data yang digunakan adalah data primer dengan menggunakan kuesioner
sebagai alat.
Sampel pada penelitian ini ditentukan berdasarkan metode purposive
sampling dengan kriteria wajib pajak kendaraan bermotor yang terdaftar di
SAMSAT Medan Utara, wajib pajak yang pernah menggunakan SAMSAT drive
thru, dan wajib pajak yang pernah mempunyai tunggakan pajak kendaraan
bermotor. Penelitian ini menggunakan sampel sebanyak 281 dari 400 responden
yang telah memenuhi kriteria. Data yang telah dikumpulkan diolah menggunakan
aplikasi SPSS.
Hasil penelitian menunjukkan bahwa variabel tingkat penghasilan, kinerja
birokrasi, sanksi pajak dan sistem SAMSAT drive thru berpengaruh positif dan
signifikan terhadap kepatuhan wajib pajak kendaraan bermotor di SAMSAT Medan
Utara
Experience Designers and Their Roles as Researchers and Practitioners in the Academic and Commercial Fields
The employment of hacker/maker and design-based research practices in the academic research setting has afforded the design practitioner a means to participate in cutting-edge research, especially if the research outcome is product or service-oriented. Design research methodologies are sought out, but the acceptance of design-based research findings by the HCI community has only just come to maturity. Conferences such as ACM DIS1 attest to this, as well as design tracks in various conferences such as ACM CHI2 show that design research techniques and methodologies are making headways in the field. Still some believe that expectations from design research techniques should be curbed, yet also embraced for the novelty in approach it brings to problem-solving and interactivity development [1].
[1] W. Gaver, What should we expect from research through design?, in: Proceedings of the 2012 ACM annual conference on Human Factors in Computing Systems, CHI ’12, ACM, New York, NY, USA, 2012, pp. 937–946
Arquitetura do lugar: o espaço como produtor de subjetividade
This article aims to analyze how architecture influences the process of subjectivity of the individual, from how it is organized within the private space as when it begins to develop from the breaking of rules and the unscheduled use of social / shared space. Therefore, it is proposed to analyze the difference of seeing space and living space, since living space is knowing the possibility of meeting, experiences, rhythms, giving meaning to it until it becomes a “place”. “ Therefore, we start from the question: Is space as an experienced architectural work capable of producing individual and collective subjectivity? Our hypothesis is that when we understand space as the possibility of experiences, we give it a sense of place, that is, producing singularities capable of providing authenticity in established relationships, both social and individual belonging. Methodologically, theoretical support is sought in the concepts of Subject and Subjectivity (GONZALES REY, 2005).
Submissão: 2019-03-23
Aceito: 2019-05-01Esse artigo tem por objetivo analisar como a arquitetura influencia no processo de subjetividade do individuo, desde como esse se organiza dentro do espaço privativo como quando começa a se desenvolver a partir do rompimento de regras e do uso não programado do espaço social/compartilhado. Para tanto propõe-se analisar a diferença de ver o espaço e viver o espaço, visto que, viver o espaço é saber da possibilidade do encontro, das experiências, dos ritmos, dando sentido à ele até que o mesmo torne-se um “lugar”. Para tanto, parte-se da questão: O espaço enquanto obra arquitetônica experienciada é capaz produzir subjetividade individual e coletiva. Nossa hipótese é a de que quando compreendemos o espaço como possibilidade de experiências, damos a ele sentido de lugar, ou seja, produzindo assim singularidades capazes de proporcionar autenticidade nas relações estabelecidas tanto sociais, como também de pertencimento individuais. Metodologicamente, busca-se apoio teórico nos conceitos de Sujeito e Subjetividade (GONZALES REY, 2005).
Mathematical analysis of the interaction between a fluid and a spray
Orientador: Gabriela del Valle PlanasTese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática Estatística e Computação CientíficaResumo: Neste trabalho, investigamos a interação de um spray de partículas finas com um fluido Newtoniano, viscoso e incompreensível. O fluido é governado pelas equações de Alfa-Navier-Stokes, enquanto que as partículas/gotículas do spray são descritas por uma função de densidade que satisfaz uma equação do tipo Vlasov ou, quando for levada em consideração a difusão das partículas, uma equação do tipo Vlasov-Fokker-Planck. As equações são acopladas através de uma força de arrasto, que depende da velocidade relativa do fluido e das partículas do spray, e da função densidade. Assumimos condições periódicas no domínio espacial. Para o sistema de equações de Alfa-Navier-Stokes-Vlasov provamos existência e regularidade de soluções fracas globais no tempo. Além disso, investigamos o comportamento das soluções quando o parâmetro alfa tende a 0. Para o sistema de equações de Alfa-Navier-Stokes-Vlasov-Fokker-Planck analisamos a existência de soluções fracas globais no tempoAbstract: In this work, we investigate the interaction of a spray of thin particles with a Newtonian, viscous and incompressible fluid. The fluid is governed by the Alfa-Navier-Stokes equations, whereas the particles/droplets of the spray are described by a density function that satisfies a Vlasov type equation or, when the particles' diffusion is considered, an equation of Vlasov-Fokker-Planck type. The equations are coupled by a drag force, which depends on the relative velocity of the fluid and the spray particles, and the density function. We assume periodic conditions in the spatial domain. For the system of Alfa-Navier-Stokes-Vlasov equations we prove existence and regularity of global in-time weak solutions. Furthermore, we investigate the behavior of the solutions when the parameter alfa tends to 0. For the system of equations of Alfa-Navier-Stokes-Vlasov-Fokker-Planck we analyze the existence of global in-time weak solutionsDoutoradoMatematicaDoutor em Matemática140713/2016-6CAPESCNP
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