49,370 research outputs found
The Effects of Low Temperature Cooking on the Deinking of Groundwood
An experiment was designed to lower the temperature of the cooking stage in the deinking of groundwood. The cook chemicals consisted of sodium meta-silicate, sodium carbonate, hydrogen peroxide and surfactants. The pulp was cooked over a temperature of 50°F-130°F. The pulp was washed on a laboratory sidehill screen and brightness pads were made. The object of the experiment was to reduce the cook temperature and use additional surfactant to maintain the brightness. Maximum brightness values were found a 0.1% surfactant and 110°F, and 0.3% surfactant and 90°F. A cost analysis revealed that a system can operate at slightly elevated temperatures and low surfactant level. This type of system is more economically feasible than operating at low temperatures and higher surfactant level.
Keywords: Deinking, washing, secondary fiber, newsprin
Visual Object Tracking: The Initialisation Problem
Model initialisation is an important component of object tracking. Tracking
algorithms are generally provided with the first frame of a sequence and a
bounding box (BB) indicating the location of the object. This BB may contain a
large number of background pixels in addition to the object and can lead to
parts-based tracking algorithms initialising their object models in background
regions of the BB. In this paper, we tackle this as a missing labels problem,
marking pixels sufficiently away from the BB as belonging to the background and
learning the labels of the unknown pixels. Three techniques, One-Class SVM
(OC-SVM), Sampled-Based Background Model (SBBM) (a novel background model based
on pixel samples), and Learning Based Digital Matting (LBDM), are adapted to
the problem. These are evaluated with leave-one-video-out cross-validation on
the VOT2016 tracking benchmark. Our evaluation shows both OC-SVMs and SBBM are
capable of providing a good level of segmentation accuracy but are too
parameter-dependent to be used in real-world scenarios. We show that LBDM
achieves significantly increased performance with parameters selected by cross
validation and we show that it is robust to parameter variation.Comment: 15th Conference on Computer and Robot Vision (CRV 2018). Source code
available at https://github.com/georgedeath/initialisation-proble
On the pulse of change: the new beat of special education in higher education
The roles and responsibilities of special educators in both special and regular school settings are changing rapidly. More than two decades ago the move towards more inclusive
practices disrupted the traditional, niche separatism of special educators to the extent that they are now an integral part of the regular school teaching staff. Today the broad agenda to facilitate access and participation for all students in education, not just students with
disabilities, influences the roles and responsibilities of special educators.
This article briefly identifies some of the generic pulses that are moving the special education profession from a focus on low incidence disabilities towards a more
comprehensive approach to inclusion, school responsiveness and individualised learning pathways. From the foundation of inclusive practice, this paper will describe how a
qualitative study was used to understand the changing roles and responsibilities of special educators. A case study analysis of 17 schools formed the basis of the investigation. Principals, lead teachers in special education and special education teachers were asked to identify trends and priorities in special education and also to identify rewards and challenges in their jobs.
Further cross referencing with teacher and special educator standards, a focus group, a stakeholder group and research in the field increased the opportunity for academics and
special educators to critically reflect on the emerging demands placed on special educators and the attributes that are needed to be professionally effective
Subversive blood ties: gothic decadence in three characters from murnau's and coppola's renderings of bram stoker's dracula
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e ExpressĂŁo, Programa de PĂłs-Graduação em Letras/InglĂŞs e Literatura Correspondente, FlorianĂłpolis, 2013Esta dissertação consiste em investigar a construção do tema da decadĂŞncia GĂłtica em Drácula de Bram Stoker e duas adaptações fĂlmicas do romance - Nosferatu, de Friedrich Wilhelm Murnau, e Drácula de Bram Stoker, de Francis Ford Coppola - tendo como centro da análise como trĂŞs personagens - Drácula, Jonathan Harker e Mina Harker - se relacionam com tal tema. A decadĂŞncia GĂłtica Ă© um padrĂŁo literário do contexto fin-de-siècle da sociedade vitoriana inspirada pela crise social que acontecia na Inglaterra no fim do sĂ©culo XIX (Punter e Byron 39-40). Autores como Bram Stoker escreveram histĂłrias que refletiam medos morais e sociais da sociedade vitoriana, retratando imagens de monstros que representavam a transgressĂŁo de fronteiras morais e sexuais estabelecidas pelas tradições vitorianas (Botting 88). Tendo tal discussĂŁo em mente, este estudo busca conectar a retratação de tal tema do romance Ă s adaptações, tambĂ©m utilizando uma análise fĂlmica para identificar tĂ©cnicas que destacam a representação do tema relacionado aos trĂŞs personagens, finalmente ligando tal tema a crises e confusões sociais que aconteciam nos contextos de ambos os filmes.Abstract : The present dissertation consists of an investigation of the construction of the Gothic theme of decadence in Bram Stoker's Dracula and two film adaptations of the novel - Friedrich Wilhelm Murnau's Nosferatu and Francis Ford Coppola's Bram Stoker's Dracula - having as the centre of analysis how three characters - Dracula, Jonathan Harker and Mina Harker - relate to that theme. The Gothic decadence is a literary motif from the fin-de-siècle context of the Victorian Era inspired by the social crisis that took place in England in the late nineteenth century (Punter and Byron 39-40). Authors like Bram Stoker wrote stories that reflected moral and social fears of the Victorian society, depicting images of monsters that represented the crossing of moral and sexual boundaries established by the Victorian traditions (Botting 88). Bearing that discussion in mind, this study aims at connecting the portrayal of such a theme from novel to the two adaptations, also making use of a filmic analysis to identify techniques that highlight the depiction of the theme related to the three characters, ultimately linking such a thematic depiction to crises and social commotions that were taking place in both films' social contexts
Constraints on the topology of the universe from the 2-yr COBE data
The cosmic microwave background (CMB) is a unique probe of cosmological
parameters and conditions. There is a connection between anisotropy in the CMB
and the topology of the Universe. Adopting a universe with the topology of a
3-Torus, or a universe where only harmonics of the fundamental mode are
allowed, and using 2-years of COBE/DMR data, we obtain constraints on the
topology of the Universe. Previous work constrained the topology using the
slope information and the correlation function of the CMB. We obtain more
accurate results by using all multipole moments, avoiding approximations by
computing their full covariance matrix. We obtain the best fit for a cubic
toroidal universe of scale 7200h^{-1} Mpc for n=1. The data set a lower limit
on the cell size of 4320h^{-1} Mpc at 95% confidence and 5880h^{-1} Mpc at 68%
confidence. These results show that the most probable cell size would be around
1.2 times larger than the horizon scale, implying that the 3-Torus topology is
no longer an interesting cosmological model.Comment: Minor revisions to match published version. 14 pages, with 4 figures
included. Color figures and links at
http://www.sns.ias.edu/~angelica/topology.htm
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