cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simulação e avaliação de um projecto urbano através dos computadores
Creators: name: Neto, Pedro Leão
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Projecto urbano
comunicação
tecnologia informática
modelação realista

description: O potencial que a tecnologia informática possui para descrever empreendimentos futuros ao público em geral é enorme. No entanto, a utilização de modelos realistas de computador podem, por si só, ofuscar variáveis importantes do projecto urbano que se prendem mais com a sua lógica de configuração espacial e com as ideias que lhe estão subjacentes. Foram utilizados dois grupos de contraste, compostos por estudantes universitários de cursos diferentes, para analisar as diferenças em relação à avaliação feita por eles sobre a forma e o conteúdo de uma apresentação em vídeo de um projecto urbano em Lisboa. Os resultados obtidos realçam o poder que a tecnologia informática e a modelação realista possuem para esbater as diferenças entre os sujeitos.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 137
description: 141
description: Pedro Leão Neto
description: Projecto urbano; comunicação; tecnologia informática; modelação realista
Geração de Ambientes Rodoviários Para Simulação de Condução
Creators: name: Campos, Carlos
name: Cunha, Vítor
name: Leitão, Miguel
Publisher: name: The Eurographics Association
Year: 2021
Subjects: simulação de condução
representação gráfica
representação vectorial
ambiente rodoviário

description: Este artigo, apresenta uma ferramenta desenvolvida para a geração de ambientes rodoviários, destinada a simuladores de condução, baseando-se essencialmente na informação de traçado longitudinal, e informação de perfil transversal. Esta informação pode ser obtida directamente de qualquer projecto de vias rodoviárias. A ferramenta permite modelar também a sinalização vertical e a sinalização horizontal, de forma, a ser utilizada por um simulador de condução. Os modelos obtidos por esta ferramenta são optimizados para a implementação de simulações visuais interactivas, utilizando técnicas como a organização espacial (árvore de objectos), LOD (level of detail), e o Layer (camadas). A ferramenta desenvolvida, foi já utilizada na implementação de dois ambientes rodoviários para simulação de condução, demonstrando que, permite gerar ambientes de elevada qualidade, reduzindo simultaneamente o tempo necessário à preparação de experiências de simulação de condução. A ferramenta apresentada foi posteriormente vocacionada para o simulador de condução ''Dris'', (''Driving Simulator'').
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 143
description: 147
description: Carlos Campos, Vítor Cunha, and Miguel Leitão
description: simulação de condução, representação gráfica, representação vectorial, ambiente rodoviário
Il ruolo delle rappresentazioni grafiche nel processo di problem solving: uno studio di casi
Creators: name: Giudici, Sonia
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2016

description: Lo scopo di questo lavoro di ricerca è quello di indagare le possibili rotture del contratto didattico che favoriscono, negli allievi, un approccio e un atteggiamento verso la risoluzione di problemi più adeguati e produttivi. In particolare si è voluto osservare l’evoluzione del ruolo giocato dalle rappresentazioni durante un percorso intenzionalmente mirato a sviluppare competenze di problem solving. Al fine di trovare delle risposte alle domande di ricerca sono stati ideati nove interventi didattici, raggruppati in tre fasi. Tutti i problemi proposti avevano una funzione specifica, in funzione della modifica del contratto didattico precedentemente instaurato. A tal proposito, le fasi del percorso sono state nominate come segue: rottura del contratto didattico, instaurazione del nuovo contratto didattico e problemi nel nuovo contratto didattico. L’analisi si è svolta inizialmente in maniera quantitativa, considerando i risultati prodotti dagli allievi e il numero di rappresentazioni emerse durante le attività, successivamente, in maniera qualitativa, secondo il paradigma dello studio di casi, analizzando in dettaglio alcune delle rappresentazioni elaborate e la loro evoluzione. Dall’analisi è emerso che grazie alla rottura del contratto didattico, gli allievi hanno cominciato ad appropriarsi, in maniera crescente, delle situazioni problema, assumendo la responsabilità della loro risoluzione e elaborando delle rappresentazioni via via più funzionali. Relatrice: Rossana Falcade
Using Sketches to Edit Electronic Documents
Creators: name: Coelho, Pedro
name: Faria, Gonçalo
name: Gonçalves, Daniel
name: Jorg, Joaquim
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Calligraphic interfaces
gesture recognition
mobile devices
text editing
user
centred design

description: Calligraphic interfaces mimic the interaction of users with pen and paper, to which most persons are used to from an early age. This makes them a privileged way of interacting with computers in efficient and natural ways. One of the tasks more often made with pen and paper is to write and correct text documents. This is done resorting to several symbols with specific meanings, representing the changes to be made in the document. It should be possible to correct electronic texts in a similar way, using calligraphic interfaces. In this paper, we describe the CaliEdit text editor, currently being developed for PalmOS devices with that goal in mind. In its development, we followed a user-centered design approach. The task analysis phase, with the help of questionnaires, identified the most common symbols for the most common text-correcting tasks. The editor itself uses the CALI shape and gesture recognizer, ported to PalmOS, to help recognize those symbols. Several porting and implementation problems were overcome. Currently, heuristic and usability evaluation studies are underway to help validate the editor.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 149
description: 152
description: Pedro Coelho, Gonçalo Faria, Daniel Gonçalves, and Joaquim Jorg
description: Calligraphic interfaces, gesture recognition, mobile devices, text editing, user-centred design
Symmetry protected measurement-based quantum computation in finite spin chains
Creators: name: Adhikary, Arnab
Publisher: name: University of British Columbia
Year: 2021

description: We consider ground states of quantum spin chains with symmetry-protected topological (SPT) order and their usefulness as resources for measurement-based quantum computation (MBQC). It is known that SPT phases (applicable to infinite spin chains) protected by a finite abelian symmetry group exhibit uniform computational power. In this work, we extend these ideas to finite spin chains which are more realistic resources for physical computation. Herein, we relate the usefulness of MBQC resource states to a non-vanishing string-order parameter. Furthermore, using the techniques developed, we show that hard-to-think-about regimes of computation are actually more efficient than the textbook prescription. Our results strengthen the connection between condensed matter and quantum computation and also provide the necessary tools to explore such connections in the state-of-the-art noisy small quantum devices. As an outlook, we discuss how this newly developed formalism can potentially be used to identify non-traditional resource states for MBQC and be extended to higher dimensions, leading to universal quantum computation.
Task Analysis and Scenario-Based Design of Calligraphic Interfaces
Creators: name: Dias, Filipe
name: Fonseca, Manuel
name: Jorge, Joaquim
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Task Analysis
CAD systems
Calligraphic Interfaces

description: The great functionality of today's CAD systems enables the manufacturing of very complex models. Yet, great part of this power is unusable, early in the design process. As well, we have found two different approaches in two different car designers that surprisingly lead to the same long time in development. In this paper we identify the reasons for these problems, and propose a solution that bridges the different worlds of conceptual and geometric models, using the affordability of the calligraphic interface. Creating a prototype by drawing it allows impossible situations to be immediately identified and corrected, without further communication overheads, certifying that emotional drawing ideas correspond to the designer's intents.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 153
description: 157
description: Filipe Dias, Manuel Fonseca, and Joaquim Jorge
description: Task Analysis, CAD systems, Calligraphic Interfaces
Existence of α-stable coherent systems on algebraic curves
Creators: name: Newstead, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H60

description: This survey article is a much extended version of a lecture given at a Clay Institute workshop in October 2006. It describes all known results on the existence of stable coherent systems on algebraic curves.
description: Final version of an article to appear in a volume of Clay Mathematics Proceedings. This version was completed in May 2009
title: Ð ÐµÑÐµÐ½Ð¸Ðµ Ð·Ð°Ð´Ð°ÑÐ¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¸ ÑÐ¸Ð½ÑÐµÐ·Ð° ÑÐ°ÑÐ¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½ÑÑ ÑÑÐµÐ´ÑÑÐ²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Solution to the problem of analyzing and synthesizing vehicle schedules
Creators: name: ÐÐµÐ»Ð¾Ð±Ð¾ÑÐ¾Ð´Ð¾Ð²Ð°, ÐÐ°Ð»ÐµÐ½ÑÐ¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÐ°ÑÐ¿Ð¸ÑÐ°Ð½Ð¸Ðµ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð¢Ð¡
Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð·Ð°Ð´Ð°ÑÐ°
Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð°ÑÐ¸Ñ
ÑÐ¾ÑÐ¼Ð°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸
Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ°
Matlab
route vehicles timetable
optimization task
automation
model formalization
mathematical model of a process

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°ÑÐ¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¸ ÑÐ¸Ð½ÑÐµÐ·Ð° ÑÐ°ÑÐ¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð°Ð²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½ÑÑ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½ÑÑ ÑÑÐµÐ´ÑÑÐ². ÐÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð¾Ð² Ð¸ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð², Ð¸Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸Ð¼Ð¾ÑÑÑ Ðº Ð·Ð°Ð´Ð°ÑÐ°Ð¼ Ñ ÑÐ°Ð·Ð½ÑÐ¼Ð¸ Ð¸ÑÑÐ¾Ð´Ð½ÑÐ¼Ð¸ Ð´Ð°Ð½Ð½ÑÐ¼Ð¸/ÐºÑÐ¸ÑÐµÑÐ¸ÑÐ¼Ð¸. Ð Ð°Ð·ÑÐ°Ð±Ð°ÑÑÐ²Ð°ÐµÑÑÑ Ð¸ ÑÐµÐ°Ð»Ð¸Ð·ÑÐµÑÑÑ Ð² Ð²Ð¸Ð´Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð´ÑÐºÑÐ° Ð½Ð° ÑÐ·ÑÐºÐµ Matlab ÑÐ¾Ð±ÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ ÑÐ¸Ð½ÑÐµÐ·Ð° ÑÐ°ÑÐ¿Ð¸ÑÐ°Ð½Ð¸Ð¹ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½ÑÑ ÑÑÐµÐ´ÑÑÐ², Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð¸ÑÑÑÑÐ¸Ð¹ Ð¾Ð´Ð¸Ð½ Ð¸Ð· Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ ÑÑÑÐ´Ð¾ÑÐ¼ÐºÐ¸Ñ ÑÑÐ°Ð¿Ð¾Ð² ÑÐ¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ°ÑÐ¿Ð¸ÑÐ°Ð½Ð¸Ð¹.
ÐÐ¾Ð»ÑÑÐµÐ½Ð½Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° Ð´Ð¾Ð»Ð¶Ð½Ð° Ð¿Ð¾Ð¼Ð¾ÑÑ Ð½Ðµ ÑÐ¾Ð»ÑÐºÐ¾ Ñ ÑÐµÑÐµÐ½Ð¸ÐµÐ¼ Ð·Ð°Ð´Ð°ÑÐ¸ ÐºÐ¾Ð½ÐºÑÐµÑÐ½Ð¾Ð¹ Ð¿Ð¾ÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸, Ð¿Ð¾Ð´ ÐºÐ¾ÑÐ¾ÑÑÑ Ð¾Ð½Ð° Ð´ÐµÐ»Ð°Ð»Ð°ÑÑ, Ð½Ð¾ ÑÐ°ÐºÐ¶Ðµ Ð¿Ð¾ÑÐ»ÑÐ¶Ð¸ÑÑ ÑÐ°Ð±Ð»Ð¾Ð½Ð¾Ð¼ Ð´Ð»Ñ Ð¿Ð¾Ð¸ÑÐºÐ° ÑÐµÑÐµÐ½Ð¸Ð¹ Ð´ÑÑÐ³Ð¸Ñ Ð·Ð°Ð´Ð°Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸.
description: This work is devoted to solving the problem of analyzing and synthesizing timetables for route vehicles. The work analyzes the existing approaches and algorithms and their applicability to problems with different source data/criteria. A new algorithm for synthesizing vehicle schedules is developed and implemented as a software product in Matlab which automates one of the most time-consuming stages of scheduling.
The resulting program should help not only with solving the problem of a specific source data for which it was made but also serve as a template for finding solutions to other problems in this area.
Survival in the New Corporatized Academy: Resisting the Privatization of Higher Education
Creators: name: Boesenberg, Ellen
Publisher: name: Workplace: A Journal for Academic Labor
Year: 2014

description: Rapid and profound changes are occurring in higher education that we ignore at our peril. Struggling against shifts toward privatization, Dr. Robert Price, a professor at City College of San Francisco, described the changes proposed for his campus as a tsunami (Nichol, 2013) and Jack Hassard cautioned lest the “slow creep of privatization does not turn into an avalanche” (Hassard, 2012).  These are apt descriptions for the formidable changes that are poised to sweep away everything in their path, with immediate and devastating consequences for educators, students, and the institutions they attend.  The curriculum is also affected and this in turn determines what knowledge is most valued. These transformations have a tremendous influence on how we as a society understand, value, and put education to use, as well as how we as educators practice our profession, generate, and use knowledge.  These disastrous changes have not come without warning however.  They are reflective of the neoliberal project and have the potential for far-reaching, negative social, political, and economic outcomes.  Integral to neoliberalism is a belief that the market has the best answer for a range of social concerns and that it is most capable of delivering results for a variety of social functions, among them education.  Acknowledging and understanding these changes can aid in the struggle to resist the effects of the privatization of higher education.
description: Workplace: A Journal for Academic Labor, No 25 (2015): Reforming Academic Labor, Resisting Imposition, K12 and Higher Education
From Irrational to Non-Unitary: on the Haffnian and Haldane-Rezayi wave functions
Creators: name: Hermanns, Maria
name: Regnault, Nicolas
name: Bernevig, B. Andrei
name: Ardonne, Eddy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the Haffnian and Haldane-Rezayi quantum Hall wave functions and their quasihole excitations by means of their `root configurations', and point out a close connection between these seemingly different states. For both states, we formulate a `generalized Pauli-principle', which allows to count the degeneracies of these states. The connection between these states might elucidate the underlying theory describing the `irrational' Haffnian state.
description: 4+ pages, published version
British Columbia Obstructs the Shock Doctrine: Struggle, Solidarity, and Popular Resistance
Creators: name: Steeves, Tobey
Publisher: name: Workplace: A Journal for Academic Labor
Year: 2014

description: The 2014/2015 school year had a rocky start in British Columbia, Canada, where teachers finished the 2013/2014 school year locked out and on strike. Naomi Klein’s notion of shock doctrines provides a lens for understanding this struggle over public services. In this paper I analyze the contexts that drove BC's teachers to reject shock therapy and highlight the tactics used to cultivate shock resistance in BC. This clash of private and public values can be extended and adapted to other contexts to cultivate broad popular support for public education.
description: Workplace: A Journal for Academic Labor, No 25 (2015): Reforming Academic Labor, Resisting Imposition, K12 and Higher Education
Integrated Nucleosynthesis in Neutrino Driven Winds
Creators: name: Roberts, L. F.
name: Woosley, S. E.
name: Hoffman, R. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Although they are but a small fraction of the mass ejected in core-collapse supernovae, neutrino-driven winds (NDWs) from nascent proto-neutron stars (PNSs) have the potential to contribute significantly to supernova nucleosynthesis. In previous works, the NDW has been implicated as a possible source of r-process and light p-process isotopes. In this paper we present time-dependent hydrodynamic calculations of nucleosynthesis in the NDW which include accurate weak interaction physics coupled to a full nuclear reaction network. Using two published models of PNS neutrino luminosities, we predict the contribution of the NDW to the integrated nucleosynthetic yield of the entire supernova. For the neutrino luminosity histories considered, no true r-process occurs in the most basic scenario. The wind driven from an older $1.4 M_\odot$ model for a PNS is moderately neutron-rich at late times however, and produces $^{87}$Rb, $^{88}$Sr, $^{89}$Y, and $^{90}$Zr in near solar proportions relative to oxygen. The wind from a more recently studied $1.27 M_\odot$ PNS is proton-rich throughout its entire evolution and does not contribute significantly to the abundance of any element. It thus seems very unlikely that the simplest model of the NDW can produce the r-process. At most, it contributes to the production of the N = 50 closed shell elements and some light p-nuclei. In doing so, it may have left a distinctive signature on the abundances in metal poor stars, but the results are sensitive to both uncertain models for the explosion and the masses of the neutron stars involved.
description: 18 Pages, 14 Figures, Astrophysical Journal (Submitted 4/16/10)
Costruiamo ponti verso la collaborazione!
Creators: name: Ghisletta, Manuela
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2018

description: La ricerca nasce da più fattori: il mio interesse personale verso la didattica laboratoriale, maturato durante il secondo anno di formazione, e un bisogno riscontrato all’interno della classe in cui ho lavorato durante l’anno scolastico 2017/2018. Il percorso ha come scopo quello di valutare se la didattica laboratoriale influenza positivamente la competenza trasversale della collaborazione di una classe di prima elementare. Il laboratorio si pone anche come elemento di continuità educativa, in quanto buona parte degli allievi della classe ha già potuto sperimentare questa metodologia di lavoro durante gli anno trascorsi alla SI. I dati sono stati raccolti tramite l’osservazione strutturata della competenza summenzionata considerando che ad inizio anno ho riscontrato nei bambini una certa difficoltà durante i lavori di gruppo. Dopo questo percorso, durato all’incirca tre meni, ho notato che i bambini mettono in atto alcune delle competenze richieste per poter lavorare bene in gruppo. Il clima di classe ha giovato di questo percorso: i bambini si ascoltano di più e mettono in gioco le proprie conoscenze e abilità di fronte ai compagni di classe senza timore. Relatrice: Veronica Simona Benhamza
Secondary atmospheric tau neutrino production
Creators: name: Bulmahn, Alexander
name: Reno, Mary Hall
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We evaluate the flux of tau neutrinos produced from the decay of pair produced taus from incident muons using a cascade equation analysis. To solve the cascade equations, our numerical result for the tau production $Z$ moment is given. Our results for the flux of tau neutrinos produced from incident muons are compared to the flux of tau neutrinos produced via oscillations and the direct prompt atmospheric tau neutrino flux. Results are given for both downward and upward going neutrinos fluxes and higher zenith angles are discussed. We conclude that the direct prompt atmospheric tau neutrino flux dominates these other atmospheric sources of tau neutrinos for neutrino energies larger than a few TeV for upward fluxes, and over a wider range of energy for downward fluxes.
description: 4 pages, 2 figures
“A Multitude of Wedges:” Neoliberalism and Micro-Political Resistance in British Columbia’s Public Schools 2001-2014
Creators: name: Hales, Anne
Publisher: name: Workplace: A Journal for Academic Labor
Year: 2015

description: In the wake of this recent chapter in British Columbia’s public education labour history, I revisit key moments in a political narrative that has played out between the BC Liberal government and provincial public school teachers since the Liberals first majority election in 2001. Using a trifocal lens of historical, theoretical and reflective inquiry, I attempt to discern the effects of neoliberal strategies and techniques (Basu, 2004) on unionism, teacher identity and the public education ‘project’ over the past decade. I consider how critically-minded educators might disrupt the prevailing ‘commonsense’ of neoliberal discourse within BC’s public education system (Ross, 2010a, p. 205). The Left, Foucault contended, has been “singularly ill equipped” to respond to neoliberal governance mechanisms, in part because it has “never possessed its own distinctive art of governing” (Gordon, 1991, p. 6). I posit that various micro-political strategies evident in British Columbia teachers’ resistance to neoliberal education policies constitute “fresh acts of inventiveness” (p. 6) in the struggle to preserve public education as a space for emancipatory pedagogy and democratic culture.
description: Workplace: A Journal for Academic Labor, No 25 (2015): Reforming Academic Labor, Resisting Imposition, K12 and Higher Education
Polygon Detection from a Set of Lines
Creators: name: Jr., Alfredo Ferreira
name: Fonseca, Manuel
name: Jorge, Joaquim
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Polygon Detection
Segment Intersection
Minimum Cycle Basis

description: Detecting polygons defined by a set of line segments in a plane is an important step in the analysis of vectorial drawings. This paper presents an approach that combines several algorithms to detect basic polygons from a set of arbitrary line segments. The resulting algorithm runs in polynomial time and space, with complexities of O((N + M)4) and O((N + M)2) respectively, where N is the number of line segments and M is the number of intersections between line segments. Our choice of algorithms was made to strike a good compromise between efficiency and ease of implementation. The result is a simple and efficient solution to detect polygons from lines.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 159
description: 162
description: Alfredo Ferreira Jr., Manuel Fonseca, and Joaquim Jorge
description: Polygon Detection, Segment Intersection, Minimum Cycle Basis
Unpolarized structure functions at Jefferson Lab
Creators: name: Christy, M. E.
name: Melnitchouk, W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Over the past decade measurements of unpolarized structure functions at Jefferson Lab with unprecedented precision have significantly advanced our knowledge of nucleon structure. These have for the first time allowed quantitative tests of the phenomenon of quark-hadron duality, and provided a deeper understanding of the transition from hadron to quark degrees of freedom in inclusive scattering. Dedicated Rosenbluth-separation experiments have yielded high-precision transverse and longitudinal structure functions in regions previously unexplored, and new techniques have enabled the first glimpses of the structure of the free neutron, without contamination from nuclear effects.
description: 21 pages, 9 figures; typo in Eq. (3) corrected, references added; to appear in J. Phys. Conf. Proc. "New Insights into the Structure of Matter: The First Decade of Science at Jefferson Lab", eds. D. Higinbotham, W. Melnitchouk, A. Thomas
The Radical Keynes: An Appraisal
Creators: name: Fanelli, Carlo
Publisher: name: Workplace: A Journal for Academic Labor
Year: 2015

description: From popular and journalistic accounts to a revival of conferences and new books inspired by Keynes’ thought, many (re)turned to him for a deeper understanding of contemporary capitalism and potentially its alternatives. My aim in this paper is twofold: First, to provide a theoretical critique of the ‘radical’ Keynes rediscovered since 2008 and, second, evaluate to what extent Keynes’ policy measures challenged or reinforced the structural inequalities at the root of capitalist social relations. My motivation in writing this essay stems from recent academic treatments attempting to ‘reclaim’ Keynes as a radical critic of capitalism. Yet, understood historically, to be radical is to get to the root of the problem.
description: Workplace: A Journal for Academic Labor, No 25 (2015): Reforming Academic Labor, Resisting Imposition, K12 and Higher Education
Asynchronous Code-Division Random Access Using Convex Optimization
Creators: name: Applebaum, Lorne
name: Bajwa, Waheed U.
name: Duarte, Marco F.
name: Calderbank, Robert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Many applications in cellular systems and sensor networks involve a random subset of a large number of users asynchronously reporting activity to a base station. This paper examines the problem of multiuser detection (MUD) in random access channels for such applications. Traditional orthogonal signaling ignores the random nature of user activity in this problem and limits the total number of users to be on the order of the number of signal space dimensions. Contention-based schemes, on the other hand, suffer from delays caused by colliding transmissions and the hidden node problem. In contrast, this paper presents a novel pairing of an asynchronous non-orthogonal code-division random access scheme with a convex optimization-based MUD algorithm that overcomes the issues associated with orthogonal signaling and contention-based methods. Two key distinguishing features of the proposed MUD algorithm are that it does not require knowledge of the delay or channel state information of every user and it has polynomial-time computational complexity. The main analytical contribution of this paper is the relationship between the performance of the proposed MUD algorithm in the presence of arbitrary or random delays and two simple metrics of the set of user codewords. The study of these metrics is then focused on two specific sets of codewords, random binary codewords and specially constructed algebraic codewords, for asynchronous random access. The ensuing analysis confirms that the proposed scheme together with either of these two codeword sets significantly outperforms the orthogonal signaling-based random access in terms of the total number of users in the system.
description: Journal version of work presented at 2010 Allerton Conference on Communication, Control and Computing. Version 2 includes additional analysis of randomly distributed user delays as well as a comparison with a matched filter receiver
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ° Ð´Ð»Ñ ÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ° ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Mininet
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: GUI Development for Mininet Network Emulation Tool
Creators: name: ÐÐ°ÑÐ°ÑÐ¾Ð²Ð°, ÐÐ»ÑÐ½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐµÐ¼ÑÐµ ÑÐµÑÐ¸
ÑÐ¼ÑÐ»ÑÑÐ¸Ñ
software-defined networking
emulation

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ° Ð´Ð»Ñ ÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ° ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ MininetÂ». Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð·Ð°Ð´Ð°ÑÐ° Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ Ð¸ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ð¾Ð² ÑÐ°Ð±Ð¾ÑÑ ÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ°Â MininetÂ Ð¸ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ°, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐµÐ³Ð¾ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ ÑÐµÑÐµÐ½Ñ ÑÐ»ÐµÐ´ÑÑÑÐ¸Ðµ Ð·Ð°Ð´Ð°ÑÐ¸: Ð¡ÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð¹ Ð¸ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÐ½Ð¾Ð¹ ÑÐ¼ÑÐ»ÑÑÐ¸Ð¸ ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÑ ÑÐµÑÐµÐ¹; ÐÐ±Ð·Ð¾Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¿ÑÐ¾Ð´ÑÐºÑÐ¾Ð², Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð½ÑÑ Ð´Ð»Ñ ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÐµÐ¹; ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ¼Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐµÐ¼ÑÑ ÑÐµÑÐµÐ¹; ÐÐ±Ð·Ð¾Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ ÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ° Mininet; ÐÐ½Ð°Ð»Ð¸Ð· ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ° MiniEdit; ÐÑÐ±Ð¾Ñ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð¿Ð¾Ð´ÑÐ¾Ð´ÑÑÐ¸Ñ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ¾Ð² ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸;Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ° Ð´Ð»ÑÂ Mininet. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ»Ð° Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð° Ð°Ð»ÑÑÐµÑÐ½Ð°ÑÐ¸Ð²Ð½Ð°Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ° Ð´Ð»Ñ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼Ð¾Ð³Ð¾ ÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ°.
description: The subject of the final qualifying work is âGUI development for Mininet network emulation toolâ. As part of the final qualifying work, the task was to study the capabilities and principles of operation of the Mininet emulator and to implement a graphical interface that meets the requirements of modern development. The following tasks were solved: 1. Comparison of software and hardware emulation of computer networks; 2. Review of existing products designed for network emulation; 3. Research on the topic of software-defined networks; 4. Overview of the capabilities of the Mininet emulator; 5. Analysis of the implementation of the MiniEdit graphical interface; 6. Selection of the most suitable development tools; 7. Development of a graphical interface for Mininet. As a result, an alternative implementation of the graphical interface for the considered emulator was proposed.
Corte de Peças de Pedra: Uma Aplicação da Computação Gráfica
Creators: name: Silva, Samuel
name: Marques, Filipe
name: Raposo, Manuel
name: Madeira, Joaquim
name: Santos, Beatriz Sousa
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Corte de pedra
modelação tridimensional
visualização
OpenGL

description: A indústria de transformação de blocos de pedra em peças decorativas tem evoluído rapidamente, sendo estas realizadas com recurso a máquinas que dispõem de autómatos programáveis, comandos numéricos e aplicações com interfaces de utilizador, que vão desde consolas de operação com duas linhas de texto a computadores industriais com interfaces gráficas. Embora a indústria portuguesa tenha evoluído nas soluções de controlo, melhores interfaces com o utilizador permitiriam uma preparação de trabalho mais rápida e menos erros de programação dos autómatos. Neste artigo descrevem-se os aspectos mais relevantes de uma destas aplicações, que recebeu melhoramentos a vários níveis, no sentido de uma maior usabilidade. Esta aplicação foi desenvolvida em Visual Basic, recorrendo à biblioteca gráfica OpenGL.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 163
description: 166
description: Samuel Silva, Filipe Marques, Manuel Raposo, Joaquim Madeira, and Beatriz Sousa Santos
description: Corte de pedra, modelação tridimensional, visualização, OpenGL
GIDes ++
Creators: name: Jorge, Joaquim
name: Silva, Nelson
name: Cardos, Tiago
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Interaction Techniques
3D Modeling
Sketching
Gesture Interfaces
Calligraphic Interfaces
Handwriting Recognition
Voice Recognition.

description: GIDes ++ is a gesture based calligraphic 3D modeller using expectation lists, and extends the notion of natural and efficient interface. A brand new look and a new modeller kernel empower the modelling capabilities. A measures layer enables the user to visualize and change measures, giving a new dimension in precise and accurate modelling. Adding new modalities like handwriting and speech, GIDes ++ present a natural and intelligent multimodal interface enabling quick models prototyping creation. Visually, much effort is being made to create a more appealing and elegant application, but keeping always in mind the usefulness of these visual effects.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 167
description: 171
description: Joaquim Jorge, Nelson Silva, and Tiago Cardos
description: Interaction Techniques, 3D Modeling, Sketching, Gesture Interfaces, Calligraphic Interfaces, Handwriting Recognition, Voice Recognition.
Construção dinâmica de um sistema interactivo para visualização do código intermédio do processo de compilação
Creators: name: Matos, Paulo
name: Henriques, Pedro
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Visualização gráfica
sistemas interactivos
XML
compiladores

description: O DOLPHIN é uma framework que suporta o desenvolvimento de compiladores de alta performance, multilinguagem e multi-arquitectura. Inclui diversas componentes, uma das quais designada por DOLPHIN-Front- End for the Web, que reúne as componentes relacionadas com a web, nomeadamente: um ambiente integrado de desenvolvimento, que entre outras funcionalidades permite visualizar, sob a forma de hiper-texto, a informação ao longo do processo de compilação. Neste artigo é apresentada uma nova solução desenvolvida com o mesmo objectivo, o de visualizar a informação, mas agora recorrendo a uma solução gráfica, interactiva e que é construída dinamicamente a partir de uma descrição da informação feita em XML.
description: 12º Encontro Português de Computação Gráfica
description: Comunicações Curtas
description: 173
description: 177
description: Paulo Matos and Pedro Henriques
description: Visualização gráfica, sistemas interactivos, XML, compiladores
title: ÐÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÐ¹ Ð¼Ð°ÑÐµÑÐ¸Ð» Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð½Ð°Ð½Ð¾ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ ÑÐµÐ¼ÐµÐ½ÑÐ°
title: Ð½Ð°ÑÑÐ½ÑÐ¹ Ð´Ð¾ÐºÐ»Ð°Ð´
titleType: Subtitle
title: Nanocarbon cement-based composite material
Creators: name: Ð§ÐµÑÐºÐ°ÑÐ¸Ð½, ÐÑÑÐµÐ¼Ð¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð½Ð°Ð½Ð¾ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÐ¹ ÑÐµÐ¼ÐµÐ½Ñ
ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÐµ Ð½Ð°Ð½Ð¾ÑÑÑÐ±ÐºÐ¸
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ÑÐ»ÑÑÑÐ°Ð·Ð²ÑÐºÐ¾Ð²Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ°Ñ ÑÑÐ¾Ð¹ÐºÐ¾ÑÑÑ
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Ð´Ð¸ÑÐ¿ÐµÑÑÐ½Ð¾Ðµ ÑÐ¿ÑÐ¾ÑÐ½ÐµÐ½Ð¸Ðµ
Ð½Ð°Ð½Ð¾Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
nanocarbon cement
carbon nanotubes
calorimetric study
ultrasonography
thermal resistance
radio absorbing materials
Ñhemical vapor deposition
dispersive hardening
nanomaterials

description: Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð¾ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ Ð½Ð°Ð½Ð¾ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ ÑÐµÐ¼ÐµÐ½ÑÐ° Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð´Ð¾Ð±Ð°Ð²ÐºÐ¸ Ð² ÑÐ¾ÑÑÐ°Ð²Ðµ ÑÐµÐ¼ÐµÐ½ÑÐ½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð². ÐÐ¾Ð»ÑÑÐ°ÐµÐ¼ÑÐ¹ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð³Ð°Ð·Ð¾ÑÐ°Ð·Ð½Ð¾Ð³Ð¾ ÑÐ¸Ð½ÑÐµÐ·Ð° Ð½Ð°Ð½Ð¾ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÐ¹ ÑÐµÐ¼ÐµÐ½Ñ Ð¸Ð¼ÐµÐµÑ Ð½Ð° Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ¸ ÐºÐ°Ð¶Ð´Ð¾Ð¹ ÑÐ°ÑÑÐ¸ÑÑ ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½ÑÐµ Ð½Ð°Ð½Ð¾ÑÑÑÐ±ÐºÐ¸ Ð¸ Ð½Ð°Ð½Ð¾Ð²Ð¾Ð»Ð¾ÐºÐ½Ð°. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ° Ð¸ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐ¸Ð½ÑÐµÐ·Ð° Ð½Ð°Ð½Ð¾ÑÐ³Ð»ÐµÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ ÑÐµÐ¼ÐµÐ½ÑÐ°. ÐÐ¾ÐºÐ°Ð·Ð°Ð½Ñ Ð½Ð¾Ð²ÑÐµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿ÑÐ¸Ð¾Ð±ÑÐµÑÐ°ÑÑ ÑÐµÐ¼ÐµÐ½ÑÐ½ÑÐµ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÑ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð½Ð°Ð½Ð¾Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°, Ð² ÑÐ¾Ð¼ ÑÐ¸ÑÐ»Ðµ ÑÐ°Ð´Ð¸Ð¾Ð¿Ð¾Ð³Ð»Ð¾ÑÐ°ÑÑÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°, ÑÐµÑÐ¼Ð¸ÑÐµÑÐºÐ°Ñ ÑÑÐ¾Ð¹ÐºÐ¾ÑÑÑ, ÑÑÐºÐ¾ÑÐµÐ½Ð¸Ðµ ÐºÐ¸Ð½ÐµÑÐ¸ÐºÐ¸ Ð³Ð¸Ð´ÑÐ°ÑÐ°ÑÐ¸Ð¸, ÑÐ¿Ð»Ð¾ÑÐ½ÐµÐ½Ð¸Ðµ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ¸ ÑÐµÐ¼ÐµÐ½ÑÐ½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð².
description: The paper considers the application of nanocarbon cement as an additive in the composition of cement composites. The cement obtained by the Ñhemical vapor deposition of nanocarbon has carbon nanotubes and nanofibers on the surface of each particle. The paper presents the device and features of the synthesis of nanocarbon cement. Paper shows new properties which acquire cement composites using this nanomaterial, including radio-absorbing properties, thermal stability, acceleration of the kinetics of hydration, compaction of the surface of cement composites.
PolyMeCo - Uma Ferramenta de Análise e Comparação de Malhas Poligonais
Creators: name: Silva, Samuel
name: Madeira, Joaquim
name: Santos, Beatriz Sousa
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Malhas poligonais
Análise e Comparação
Visualização

description: A representação de modelos usando malhas poligonais é utilizada em diversos domínios. Por vezes, de forma a adequar uma determinada malha a uma aplicação particular, torna-se necessário processá-la (p.ex., para atenuar ruído), o que conduz a uma alteração das suas características (p.ex., número e/ou posição dos vértices). Qualquer operação de processamento introduz, assim, diferenças em relação à malha original que, de acordo com a aplicação a que o modelo se destina, deverão ser avaliadas. Neste artigo é apresentada uma ferramenta, para análise e comparação das características de malhas poligonais, que procura ser inovadora na forma como permite visualizar e comparar os valores obtidos para diferentes números de mérito. Assim, é possível trabalhar em simultâneo com vários modelos e diversos números de mérito, e usar diferentes tipos de representações (p.ex., modelos coloridos ou histogramas) para visualizar propriedades intrínsecas de uma malha, ou a distribuição de uma medida de desvio de uma malha processada relativamente à original.
description: 13º Encontro Português de Computação Gráfica
description: Artigos
description: 1
description: 8
description: Samuel Silva, Joaquim Madeira, and Beatriz Sousa Santos
description: Malhas poligonais, Análise e Comparação, Visualização
Daily modulation due to channeling in direct dark matter crystalline detectors
Creators: name: Bozorgnia, Nassim
name: Gelmini, Graciela B.
name: Gondolo, Paolo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The channeling of the ion recoiling after a collision with a WIMP in direct dark matter crystalline detectors produces a larger scintillation or ionization signal than otherwise expected. Channeling is a directional effect which depends on the velocity distribution of WIMPs in the dark halo of our Galaxy and could lead to a daily modulation of the signal. Here we compute upper bounds to the expected amplitude of daily modulation due to channeling using channeling fractions that we obtained with analytic models in prior work. After developing the general formalism, we examine the possibility of finding a daily modulation due to channeling in the data already collected by the DAMA/NaI and DAMA/LIBRA experiments. We find that even the largest daily modulation amplitudes (of the order of 10% in some instances) would not be observable for WIMPs in the standard halo in the 13 years of data taken by the DAMA collaboration. For these to be observable the DAMA total rate should be 1/40 of what it is or the total DAMA exposure should be 40 times larger. The daily modulation due to channeling will be difficult to measure in future experiments. We find it could be observed for light WIMPs in solid Ne, assuming no background.
description: 29 pages, 15 figures. v3: version accepted by PRD. Minor corrections made, corrected Eq. 12 and 13 and Figs. 2, 3.a, and 4.a, corrected Eqs. 27-38 by a factor of 2, added the observability condition for solid Ne
Aufgaben- oder Grammatikorientierung? Eine empirische Studie zur Wahrnehmung zweier didaktischer Ansätze durch Tessiner Gymnasiasten
Creators: name: Baroni, Giorgia
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2015

description: Die hier vorliegende empirische Studie befasst sich mit einem Vergleich zwischen dem aufgabenorientierten und dem grammatikorientierten Ansatz durch 62 beteiligte SuS aus zwei verschiedenen Gymnasien des Tessins: dem Liceo Lugano 2 von Savosa und dem Liceo von Bellinzona, die bekanntlich für je einen der beiden Ansätze plädieren. Die vorliegende Arbeit versucht nun, einen Gegenpol zu der Perspektive über die Implikationen der zwei Methoden für die Lehrpersonen zu schaffen, indem die Folgen und die Wahrnehmung seitens der SuS den Kern in Erwägung gezogen werden. Sowohl die Datenerhebung der zwei in der Arbeit durchgeführten Experimente als auch deren Auswertung zielen darauf ab, ein Bild aus der Sicht der Lernenden zu erhalten. Konkret heisst dies, dass die Schüler im ersten Pre-Test und dann im Rahmen einer didaktischen Intervention aufgefordert wurden, sich über die Wirksamkeit und die Nützlichkeit dieser Methoden auszudrücken. Das ist im ersten Test in Bezug auf die persönliche Wahrnehmung und in der didaktischen Intervention in Bezug auf den Erwerb und auf die den Tessiner Lehrplänen zugrunde liegenden Lernziele der ersten Klasse erfolgt. Bei dieser zweiten Datenerhebung hat man aufgrund der Entwicklung eines Bewusstseins der Implikationen der zwei Ansätze eine Änderung bei den Vorlieben der SuS festgestellt. Materia: tedesco. Relatore: Gé Stoks
A Novel Technique to Observe Rapidly Pulsating Objects Using Spectral Wave-Interaction Effects
Creators: name: Borra, Ermanno F
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Conventional techniques that measure rapid time variations are inefficient or inadequate to discover and observe rapidly pulsating astronomical sources. It is therefore conceivable that there exist some classes of objects pulsating with extremely short periods that have not yet been discovered. This article starts from the fact that rapid flux variations generate a spectral modulation that can be detected in the beat spectrum of the output current fluctuations of a quadratic detector. The telescope could observe at any frequency, although shorter frequencies would have the advantage of lower photon noise. The techniques would allow us to find and observe extremely fast time variations, opening up a new time window in Astronomy. The current fluctuation technique, like intensity interferometers, uses second-order correlation effects and fits into the current renewal of interest in intensity interferometry. An interesting aspect it shares with intensity interferometry is that it can use inexpensive large telescope that have low-quality mirrors, like Cherenkov telescopes. It has other advantages over conventional techniques that measure time variations, foremost of which is its simplicity. Consequently, it could be used for extended monitoring of astronomical sources, something that is difficult to do with conventional telescopes. Arguably, the most interesting scientific justification for the technique comes from Serendipity
description: Accepted for publication in Astrophysical Journal
Snake-based tool for supporting interactive tooth segmentation from 3D mandibular meshes
Creators: name: Yang, Rui
Publisher: name: University of British Columbia
Year: 2021

description: Mandibular meshes segmented from computerized tomography (CT) images contain rich information of the dentition. Inconsistent dentition conditions in healthy mandible data sets can impair data-driven premorbid shape prediction for diseased mandibles. We developed a mesh segmentation method that includes a preprocessing algorithm using an off-the-shelf non-rigid registration, a surface mesh feature function, and an active contour model using geodesic distance. Constructive Solid Geometry (CSG) operations are employed to separate the dentition area from the mandibular mesh. An easy-to-use interactive tool was implemented, allowing users to adjust the contour position. We evaluated our method (preprocessing algorithm and user intervention) by comparing it with the traditional method of manual removal using 3D Slicer. The results indicated that our method helped save the manual processing time by 40%, which largely improves the efficiency. From a statistical-shape-modeling-based shape completion test, we drew the conclusion that edentulous mandibular data set could help make significantly better premorbid shape predictions (Z=-2.484,p=0.013) than data set with mixed dentition conditions. Besides tooth segmentation from 3D meshes, our research can assist virtual planning for bone graft placement in the defective mandible and implant placement in the bone graft. This work forms the underlying basis of a useful tool for coupling jaw reconstruction and restorative dentition for patient treatment planning.
Algoritmo de Subdivisão de Superfícies Deformáveis para Execução em GPU
Creators: name: Birra, Fernando
name: Santos, Manuel Próspero
Publisher: name: The Eurographics Association
Year: 2021
Subjects: Computação no GPU
subdivisão
simulação
superfícies deformáveis
níveis de detalhe

description: A subdivisão recursiva de superfícies é uma técnica que permite obter uma superfície final suave, com elevado nível de detalhe, partindo de uma superfície inicial, de controlo, muito pouco detalhada. Se é verdade que, por um lado, esta técnica se torna muito apetecível efectuando simulações demoradas apenas numa malha de controlo, por outro, se essa mesma malha tiver que ser subdividida pelo CPU antes de ser passada ao GPU, para visualização, então perde-se grande parte ou até mesmo a totalidade das vantagens na sua utilização. Este artigo propõe um algoritmo de subdivisão de malhas regulares formadas por triângulos, agrupados dois a dois em quadriláteros. O algoritmo é executado na sua totalidade no GPU, aliviando o CPU para as tarefas de simulação. O exemplo que serve de ilustração a este algoritmo é o da simulação de superfícies deformáveis (p.ex. tecidos) com variação dinâmica do nível de detalhe. Trata-se de um domínio de aplicação onde todo o tempo de CPU se revela necessário para a avaliação do modelo mecânico subjacente à dinâmica da superfície deformável.
description: 13º Encontro Português de Computação Gráfica
description: Artigos
description: 19
description: 27
description: Fernando Birra and Manuel Próspero Santos
description: Computação no GPU, subdivisão, simulação, superfícies deformáveis, níveis de detalhe
Wang-Landau study of the 3D Ising model with bond disorder
Creators: name: Theodorakis, P. E.
name: Fytas, N. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We implement a two-stage approach of the Wang-Landau algorithm to investigate the critical properties of the 3D Ising model with quenched bond randomness. In particular, we consider the case where disorder couples to the nearest-neighbor ferromagnetic interaction, in terms of a bimodal distribution of strong versus weak bonds. Our simulations are carried out for large ensembles of disorder realizations and lattices with linear sizes $L$ in the range $L=8-64$. We apply well-established finite-size scaling techniques and concepts from the scaling theory of disordered systems to describe the nature of the phase transition of the disordered model, departing gradually from the fixed point of the pure system. Our analysis (based on the determination of the critical exponents) shows that the 3D random-bond Ising model belongs to the same universality class with the site- and bond-dilution models, providing a single universality class for the 3D Ising model with these three types of quenched uncorrelated disorder.
description: 7 pages, 7 figures, to be published in Eur. Phys. J. B