Increasing Public Transit Ridership Among University Of Manitoba Students: A Bus Rapid Transit Solution

Paper: iv, 33 pp.; ill., digital file.Public transit ridership has decreased over the last 50 years as automobile ownership has increased. The environmental impacts of automobile use have prompted the need for more sustainable methods of transportation. Winnipeg Transit has proposed to construct a bus rapid transit system that links downtown Winnipeg to the University of Manitoba. This study looks at whether or not students at the University of Manitoba state that they would use public transit more often if a bus rapid transit system was implemented. A survey instrument was employed and it was found that students at the University of Manitoba did state an improved willingness to use public transit if bus rapid transit were available.Institute of Urban Studie

Black Faces, White Spaces: Navigating A Women’s Center as Queer Black Women Leaders

Many of the Women’s centers across the US came to life in response to the continued activism of students who held women identities and their allies. While the establishment of women’s centers changed life on college and university campuses for many who hold women identities, the racial and gender demographics of those occupying and utilizing resources and those in leadership has overwhelmingly been cis-gender and white. This does not come as a surprise, as the creation of many of these centers has historically been rooted in white feminist ideology; leaving out Black, Indigenous, Womxn of Color (BIWOC), Trans Womxn, and many others who hold marginalized, intersectional Womxn identities. Through vulnerable and candid conversation, we shed light on the history of the Women’s Resources and Research Center at UC Davis (the oldest identity based center on campus turning 50 in winter 2020), the changing nature of the work as it becomes rooted in intersectional feminism, how leadership has changed and now includes two Queer Black Women as the first Black Director and Black Associate Director of the Center, and what it means and has meant for them to be Black faces in a historically white space

Motor vehicle traffic as an air pollution exposure assessment method in big cities

A poluição atmosférica é uma das maiores preocupações para a saúde pública. Entre os estudos conduzidos para testar a associação entre poluição do ar e os mais diversos desfechos em saúde, alguns utilizaram dados viários e de tráfego veicular como avaliação da exposição. O presente trabalho pretende revisar e discutir alguns dos aspectos metodológicos dos estudos que utilizaram este método, principalmente em áreas onde a fonte veicular é uma grande geradora de poluentes. Realizou-se uma busca bibliográfica com palavras-chave relacionadas à poluição atmosférica e tráfego veicular, e foram selecionados artigos publicados entre os anos de 2000 e 2009. Foram constatadas várias abordagens para avaliar a exposição, enfatizando-se o método da Densidade de Tráfego Ponderada pela Distância, que considera as vias e a distância das mesmas em relação ao local de interesse e o tráfego. Além disso, destaca-se a importância do uso de técnicas de sistemas de informação geográfica (SIG) como instrumento na construção de modelos para mensurar a exposição.Air pollution is a major concern for public health. Among the studies conducted to evaluate the association between air pollution and a wide variety of outcomes, some have used motor vehicle traffic data as a method for exposure assessment. This paper intends to revise and discuss some of the methodological aspects of studies that used this method, especially in areas where vehicles are the main generating source of pollutants. We performed a literature search with keywords related to air pollution and vehicle traffic, and selected articles published between the years 2000 to 2009. We noted different approaches for assessing the exposure among the studies using vehicle traffic, with emphasis on the method named Distance Weighted Traffic Density, which considers the number of roads, the distance from the location of interest and traffic itself. Moreover, we highlight the importance of using techniques such as geographic information systems (GIS) to measure this exposure

Ceratitis capitata (Diptera - Tephritidae), em S. Miguel-Açores. Eficácia de nemátodes entomopatogénicos contra a mosca-da-fruta.

I Workshop de Fruticultura "Contributo para o seu desenvolvimento", Angra de Heroísmo, 21 a 23 de Abril de 2005.The distribution and abundance of Ceratitis capitata in peach, guava, feijoa, hot pepper and citrus orchards was analysed in this study, as well as the efficacy of different nematodes isolates to control the medfly last instar larvae and pupae. C. capitata was present in all the field crops throughout the sampling period, although the highest number of adults was trapped during summer and autumn. The highest mean number of captured adults was observed in feijoa orchard, followed by hot pepper and citrus crops. Although in the peach orchard the mean number of trapped adults was low, the percentage of fruit infestation was similar (over 60 %) to that of feijoa, citrus and hot pepper fruits; for guava, only 24.9% of the fruits were infested by C. capitata. Regardless of the crop, all traps containing the male-attractant pheromone showed to be the most effective to estimate the distribution and abundance of the medfly. Regarding the efficacy of different isolates of nematodes those from the Heterorhabditis genera were more effective keeling both the larvae and pupae of C. capitata; however, only the isolate Az36 (H. bacteriophora) caused a larval mortality significantly higher than the control

Residential back taxes and revitalization: a study of Winnipeg's Spence neighbourhood

report: ii, 28 pp.; ill., digital fileThe City of Winnipeg considers the Spence neighbourhood a Major Rehabilitation Area. Socio-economic conditions have deteriorated and the number of boarded-up and abandoned homes has increased. Community groups are calling for revitalization as the conditions escalate toward irreversible decay. Unfortunately, there are numerous barriers to urban revitalization; one obstacle for the redevelopment of homes in this area is the City of Winnipeg’s stringent tax policy. Many of the abandoned units have back taxes owing and are left vacant for up to five years before the city claims title to the property. If a private homeowner is in tax arrears and wants to give or sell the home for a nominal amount to a non-profit group, the city stresses that back taxes still have to be paid. Once the five-year tax sale process is completed, homes are easy to acquire from the city. The purpose of this investigation is to illustrate how detrimental a five-year waiting period can be for the already neglected housing stock and the perception of the neighbourhood, as well as its role in accelerating urban decay.Institute of Urban Studie

Geometrical CP violation from non-renormalisable scalar potentials

We consider in detail the non-renormalisable scalar potential of three Higgs doublets transforming as an irreducible triplet of Delta(27) or Delta(54). We start from a renormalisable potential that spontaneously leads to a vacuum with CP-violating phases independent of arbitrary parameters - geometrical CP violation. Then we analyse to arbitrarily high order non-renormalisable terms that are consistent with the symmetry and we demonstrate that inclusion of non-renormalisable terms in the potential can preserve the geometrical CP-violating vacuum.Comment: 5 pages, 2 figures. v2: references added, accepted by PL

Adaptive Service Composition Based on Runtime Verification of Formal Properties

Service-Oriented Computing (SOC) has been used in business environments in order to integrate heterogeneous systems. The dynamic nature of these environments causes \ changes in the application requirements. As a result, service composition must be flexible, dynamic and adaptive, which motivate the need to ensure the service composition behavior \ at runtime. The development of adaptive service compositions is still an opportunity due to the complexity of dealing with adaptation issues, for example, how to provide runtime verification \ and automatic adaptation. Formal description techniques can be used to detect runtime undesirable behaviors that help in adaptation process. However, formal techniques have been \ used only at design-time. In this paper, we propose an adaptive service composition approach based on the lightweight use of formal methods. The aim is detecting undesirable behaviors in \ the execution trace. Once an undesirable behavior is detected during the execution of a service composition, our approach triggers an adequate reconfiguration plan for the problem at \ runtime. In order to evaluate the effectiveness of the proposal, we illustrate it with a running example

Perinatal mortality and traffic-related air pollution

Made available in DSpace on 2019-09-11T20:58:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2010[Medeiros, Andréa Paula Peneluppi de] Universidade de Taubaté, BrazilNovaes, Hillegonda Maria Dutilh; Gouveia, Nelson] Universidade de São Paulo, Brazi

Modeling and multivariate analysis of the production process of alpha-hydroxy acids and hydrogen by electro-oxidation of glycerol / Modelagem e análise multivariada do processo de produção de alfa-hidroxiácidos e hidrogênio por eletro-oxidação de glicerol

The electro-oxidation of alkaline solutions of glycerol to obtain alpha-hydroxy acids and hydrogen is a sustainable procedure of a renewable nature, with the raw material derived from the co-production of biodiesel. The system is composed of a stirred tank electrochemical reactor built "ad-hoc" with a cell separated by ceramic where oxygen is generated to produce acids and hydrogen. The present studies were conducted by controlling the variables: temperature (0C), molar ratio (mol/mol) and current density (mA/cm2), based on experimental design and cyclic voltammogram. The empirical model and multivariate analysis were obtained through data collected by HPLC with a refractive index detector. This analysis presents the conversion of glycerol to tartronic and oxalic acid associated with the current density corresponding to factor1. Factor2 reveals the productivity of glyceric acid and glycolic acid related to molar ratio. The accumulated percentage of the two factors were more than 75% representative.  The empirical model built from experimental planning had  an error of less than 5%. The best phenomenological model experienced had an average error of less than 7%. From this model, the amount of hydrogen generated in the NTP was calculated

Desenvolvimento de massa de revestimento cerâmico, relacionando o desempenho do Caulim e Argila Mataraca

The production of ceramics is one of the oldest activities developed by man, however, until today it goes through a process of innovation and development, a crucial point for this fact is the selection of raw materials that favor the technological value of the finished product. In this context, the present work aims to evaluate the substitution of kaolin by the determination of Mataraca clay from a standard ceramic composition (STD). For this, the raw materials were characterized before chemical (FRX), mineralogical (XRD), and grain size analysis, and after burning, by fire loss (PF), linear retraction (RL) and water absorption (AA). The methodology was based on the empirical model of a ceramic industry, the specimens were compacted by uniaxial pressing (20 bar), and dried in an oven at 100 ºC for 24 hours, then sintered at 1200 ºC in a 30 min firing cycle. Four new formulations were prepared: MASSA B, MASSA C and MASSA D, which were evaluated from physical-mechanical tests: fire loss (PF), linear retraction (RL), water absorption (AA), rupture (CR), flexural strength modulus (MRF) and linear thermal expansion (DTL). The STD test (AA = 6.3%, CR = 16.5 N and MRF = 530Mpa) had a quality score below the other formulations, however the MASSA D (AA = 3.85%, CR = 24.3 N and MRF = 700.70Mpa), which comprises the total substitution of kaolin for the clay in the ceramic composition, was the one that presented the best results. From the general analysis of the values obtained from the use of the Mataraca clay in the formulations studied, it can be affirmed that it is a raw material of great potential for the ceramic tile flooring industry, for achieving products compatible with the minimum values required by NBR 13818 (1997), which defines methods of analysis and quality standards, and is economically viable for use in the industrial process, representing an economy of 85.4% in the production of ceramic masses.A produção de cerâmica é uma das atividades mais antigas desenvolvida pelo homem, contudo, até hoje passa por um processo de inovação e desenvolvimento, um ponto crucial para esse fato, é a seleção de matérias-primas que favoreçam o valor tecnológico do produto acabado. Nesse contexto, o presente trabalho tem como objetivo avaliar a substituição do caulim por dosagem da argila Matarca, a partir de uma composição de massa cerâmica padrão (STD). Para isso, as matérias-primas foram caracterizadas antes da queima por análise química (FRX), mineralógica (DRX), e granulométrica, e após queima, por perda ao fogo (PF), retração linear (RL) e absorção de água (AA). A metodologia foi baseada pelo o modelo empírico de uma indústria cerâmica, os corpos-de-prova foram compactados por prensagem uniaxial (20 bar), e na sequência secos em estufa a 100 ºC por 24 horas, em seguida sinterizados a 1200 ºC, em um ciclo de queima de 30 minutos. Foram preparadas quatro novas formulações, MASSA A MASSA B, MASSA C e MASSA D, que foram avaliadas a partir de ensaios físico-mecânicos: perda ao fogo (PF), retração linear (RL), absorção de água (AA), carga de ruptura (CR), módulo de resistência a flexão (MRF) e dilatação térmica linear (DTL). O ensaio STD (AA = 6,3 %, CR= 16,5 N e MRF = 530 Mpa), teve classificação de qualidade abaixo das demais formulações, contudo a MASSA D (AA = 3,85 %, CR= 24,3 N e MRF = 700,70 Mpa), que compreende a substituição total do caulim pela a argila na composição cerâmica, foi quem apresentou melhores resultados. A partir da análise geral dos valores obtidos a partir da utilização da argila Mataraca nas formulações estudadas, pode-se afirmar que é uma matériaprima de grande potencial para a indústria de pisos de revestimento cerâmico, por alcançar produtos compatíveis com os valores mínimos exigidos pela NBR 13818 (1997), que define os métodos de análises e os padrões de qualidade, além de ser economicamente viável para utilização no processo industrial, representando uma economia de 8,5 % na produção de massas cerâmicas