6,016 research outputs found
Dynamics of condensation in the totally asymmetric inclusion process
We study the dynamics of condensation of the inclusion process on a
one-dimensional periodic lattice in the thermodynamic limit, generalising
recent results on finite lattices for symmetric dynamics. Our main focus is on
totally asymmetric dynamics which have not been studied before, and which we
also compare to exact solutions for symmetric systems. We identify all relevant
dynamical regimes and corresponding time scales as a function of the system
size, including a coarsening regime where clusters move on the lattice and
exchange particles, leading to a growing average cluster size. Suitable
observables exhibit a power law scaling in this regime before they saturate to
stationarity following an exponential decay depending on the system size. Our
results are based on heuristic derivations and exact computations for symmetric
systems, and are supported by detailed simulation data.Comment: 23 pages, 6 figures, updated references and introductio
INFO2009 - Group 9: Green ICT
A Video Tuturial explaining Green ICT approaches,legal issues and a case study
La localisation des garderies dans l’espace social de l’agglomération de Québec
Les services de garde à l'enfance jouent maintenant un rôle de premier plan dans le fonctionnement de nos sociétés. L'analyse de la localisation des garderies et de leur clientèle par rapport aux milieux sociaux de l'agglomération de Québec permet d'aborder la question des variations dans l'accessibilité aux services de garde. Les grands traits de l'espace socio-résidentiel de l'agglomération sont d'abord définis à l'aide d'une écologie factorielle. Les garderies et leur clientèle sont ensuite localisées dans cet espace. Plus de 100garderies offrent quelque 5000 places aux 25000enfants d'âge préscolaire de l'agglomération. En général, les garderies ont tendance à se localiser dans les zones centrales alors que les enfants d'âge préscolaire habitent très majoritairement les banlieues éloignées. Cette contradiction apparente fait l'objet d'une analyse plus poussée qui montre que le lieu de travail des parents influence grandement le rapport entre la répartition de l'offre de places en garderie et la répartition de la demande, ce qui pourrait avoir des conséquences intéressantes pour les quartiers urbains centraux. Enfin, des relations significatives sont établies entre la localisation des garderies et leur degré de mixité sociale.Daycare centres have become an important component of daily activity for a significant number of persons. An analysis of the spatial distribution of daycare centres and their users in relation to the residential social structure of the Québec Metropolitan Area is conducted with the aim of developing a better understanding of the dynamics of accessibility to this crucial service. Over 100centres offer some 5000places to 25000children of pre-school age. About half of these kindergartens have supplied us with the residential postal codes of their children. Using tools such as factorial analysis and statistical cartography, we perform an analysis of the location, both in the social and the physical space of the city and its suburbs, of the centres and the families which use them. The relative distribution of supply and demand of daycare places is measured as well as the relationship between location and degree of social diversity within daycare centres. Although children of pre-school age tend to reside in distant suburbs, most daycare centres are located in central districts. This apparent imbalance, which is largely explained by the workplaces of parents, may have interesting consequences for older neighbourhoods
Product life cycle: the evolution of a paradigm and literature review from 1950-2009
Copyright © 2012 Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in Production Planning & Control: The Management of Operations on 17 June 2011 (online), available online: http://www.tandfonline.com/10.1080/09537287.2011.577460Recently, product lifecycle management (PLM) has become a popular topic in academic literature. However, although it shares the same title, contemporary PLM is quite different from the early twentieth century's PLM culture, which was established upon the basis of the classical life cycle body of theory, which continued to be refined, right up to the end of 1960s. A comprehensive understanding of the creation and deployment of different strands of PLM strategy requires a knowledge of the basis of such paradigms – that is, the variety of product life cycle theories available to the researcher, and how these have come about. This article reviews relevant product life cycle models presented historically in the literature and divides them into two categories – the long-established marketing product life cycle model, and the emergent engineering product life cycle model. An explanation of the former model leads to an understanding of its perceived shortcomings, and the reason for the take-up of later models. A correct knowledge of this is important, as contemporary PLM has been inundated with a variety of PLM methodologies and techniques, largely from the periodical literature and across the internet, often with no clear explication of the underlining product life cycle model used to derive the methodology. There is a need for analysis upon this issue; not just to clarify the mutable term ‘product life cycle’, but for the provision of a correct understanding of the models that are informing the current debate, often outside academic circles
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Androgen-independent events in penile development in humans and animals.
The common view on penile development is that it is androgen-dependent, based first and foremost on the fact that the genital tubercle forms a penis in males and a clitoris in females. However, critical examination of the complex processes involved in human penile development reveals that many individual steps in development of the genital tubercle are common to both males and females, and thus can be interpreted as androgen-independent. For certain developmental events this conclusion is bolstered by observations in androgen-insensitive patients and androgen receptor mutant mice. Events in genital tubercle development that are common to human males and females include: formation of (a) the genital tubercle, (b) the urethral plate, (c) the urethral groove, (d) the glans, (e) the prepuce and (f) the corporal body. For humans 6 of 13 individual developmental steps in penile development were interpreted as androgen-independent. For mice 5 of 11 individual developmental steps were found to be androgen-independent, which were verified through analysis of androgen-insensitive mutants. Observations from development of external genitalia of other species (moles and spotted hyena) provide further examples of androgen-independent events in penile development. These observations support the counter-intuitive idea that penile development involves both androgen-independent and androgen-dependent processes
Genomic risk prediction for breast cancer in older women
Genomic risk prediction models for breast cancer (BC) have been predominantly developed with data from women aged 40-69 years. Prospective studies of older women aged ≥70 years have been limited. We assessed the effect of a 313-variant polygenic risk score (PRS) for BC in 6339 older women aged ≥70 years (mean age 75 years) enrolled into the ASPREE trial, a randomized double-blind placebo-controlled clinical trial investigating the effect of daily 100 mg aspirin on disability-free survival. We evaluated incident BC diagnoses over a median follow-up time of 4.7 years. A multivariable Cox regression model including conventional BC risk factors was applied to prospective data, and re-evaluated after adding the PRS. We also assessed the association of rare pathogenic variants (PVs) in BC susceptibility genes
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Service Quality Comparison of Franchising and Licensing Units within the Same Brand from Customer Perspectives
Service quality has received increasing attention over the years. Service quality is crucial for service organizations, which directly leads to customer satisfaction, customer retention, and positive word of mouth. Comparing to the robust research in service quality, little research has been shown regarding different forms of management. This research is an empirical study on the impact of different forms of management on the outcome of service quality. This study reviews the literature of service quality as well as management forms (Franchising and Licensing), and then examine how customers perceive the service quality of different management forms and how each management form affect the service delivery. In addition, if the results show differences, the study also discusses the reasons of these differences. The first section introduces the academic background describing the possible service problems have been discussed among scholars. In the second section, methodology is presented, including the 5-piont Likert scale based on SERVQUAL technique. The third section presents the data; explaining the method of data collection and the significant differences in service quality between two management units: franchising and licensing. The analysis process discusses possible reasons for these differences. Lastly, some recommendations and limitations are provided to help guide for the future research
ALMA Observation of NGC5135: The Circumnuclear CO(6-5) and Dust Continuum Emission at 45 Parsec Resolution[]
We present high-resolution (0.17\arcsec 0.14\arcsec) Atacama Large
Millimeter/submillimeter Array (ALMA) observations of the CO\,(6-5) line, and
435\um\ dust continuum emission within a 9\arcsec 9\arcsec\ area
centered on the nucleus of the galaxy NGC\,5135. NGC\,5135 is a well-studied
luminous infrared galaxy that also harbors a Compton-thick active galactic
nucleus (AGN). At the achieved resolution of 48 40\,pc, the CO\,(6-5)
and dust emissions are resolved into gas "clumps" along the symmetrical dust
lanes associated with the inner stellar bar. The clumps have radii between
45-180\,pc and CO\,(6-5) line widths of 60-88\,\kms. The CO\,(6-5)
to dust continuum flux ratios vary among the clumps and show an increasing
trend with the \FeII/Br- ratios, which we interpret as evidence for
supernova-driven shocked gas providing a significant contribution to the \co65\
emission. The central AGN is undetected in continuum, nor in CO\,(6-5) if its
line velocity width is no less than \,40\,\kms. We estimate that the AGN
contributes at most 1\% of the integrated CO\,(6-5) flux of 512
24Jy\kms\ within the ALMA field of view, which in turn accounts for
32\% of the CO\,(6-5) flux of the whole galaxy.Comment: 21 pages, 12 figures, Accepted for publication in Ap
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