University of Guelph

About: University of Guelph is a education organization based out in Guelph, Ontario, Canada. It is known for research contribution in the topics: Population & Gene. The organization has 26542 authors who have published 50553 publications receiving 1715255 citations. The organization is also known as: U of G & Guelph University.

Resident attitudes toward sustainable community tourism

Abstract: This study examined, using social exchange theory, a range of variables involved in determining resident attitudes toward tourism development and the adoption of sustainable tourism. After a comprehensive review of the literature on the role of residents in tourism development, and of the use of social exchange theory, 430 completed questionnaires obtained in a Texas town involved in tourism were analyzed. A structural equation model was utilized to understand the effects of selected components of sustainability on the attitudes of the respondents about future tourism development and to test hypothesized causal relationships among the variables. The findings revealed that three major components of sustainable tourism, namely long-term planning, full community participation and environmental sustainability within tourism, are critically related to support for tourism and to the positive and negative impacts of tourism. The paper uses the findings to suggest critical implications that local governments need...

Taxonomic assignment of uncultivated prokaryotic virus genomes is enabled by gene-sharing networks

Abstract: Microbiomes from every environment contain a myriad of uncultivated archaeal and bacterial viruses, but studying these viruses is hampered by the lack of a universal, scalable taxonomic framework. We present vConTACT v.2.0, a network-based application utilizing whole genome gene-sharing profiles for virus taxonomy that integrates distance-based hierarchical clustering and confidence scores for all taxonomic predictions. We report near-identical (96%) replication of existing genus-level viral taxonomy assignments from the International Committee on Taxonomy of Viruses for National Center for Biotechnology Information virus RefSeq. Application of vConTACT v.2.0 to 1,364 previously unclassified viruses deposited in virus RefSeq as reference genomes produced automatic, high-confidence genus assignments for 820 of the 1,364. We applied vConTACT v.2.0 to analyze 15,280 Global Ocean Virome genome fragments and were able to provide taxonomic assignments for 31% of these data, which shows that our algorithm is scalable to very large metagenomic datasets. Our taxonomy tool can be automated and applied to metagenomes from any environment for virus classification.

Elucidation of Functional Groups on Gram-Positive and Gram-Negative Bacterial Surfaces Using Infrared Spectroscopy

Abstract: Surface functional group chemistry of intact Gram-positive and Gram-negative bacterial cells and their isolated cell walls was examined as a function of pH, growth phase, and growth media (for intact cells only) using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy Infrared spectra of aqueous model organic molecules, representatives of the common functional groups found in bacterial cell walls (ie, hydroxyl, carboxyl, phosphoryl, and amide groups), were also examined in order to assist the interpretation of the infrared spectra of bacterial samples The surface sensitivity of the ATR-FTIR spectroscopic technique was evaluated using diatom cells, which possess a several-nanometers-thick layer of glycoprotein on their silica shells The ATR-FTIR spectra of bacterial surfaces exhibit carboxyl, amide, phosphate, and carbohydrate related features, and these are identical for both Gram-positive and Gram-negative cells These results provide direct evidence to the previously held conviction that the negative charge of bacterial surfaces is derived from the deprotonation of both carboxylates and phosphates Variation in solution pH has only a minor effect on the secondary structure of the cell wall proteins The cell surface functional group chemistry is altered neither by the growth phase nor by the growth medium of bacteria This study reveals the universality of the functional group chemistry of bacterial cell surfaces

“Brain Abuse”, or the Devaluation of Immigrant Labour in Canada

Abstract: Many professional and skilled Canadian immigrants suffer from de-skilling and the nonrecognition of their foreign credentials. Consequently, they are underrepresented in the upper segments of the Canadian labour market. Rather than accepting this devaluation of immigrant labour as a naturally occurring adjustment period, I suggest that regulatory institutions actively exclude immigrants from the upper segments of the labour market. In particular, professional associations and employers give preference to Canadian-born and educated workers and deny immigrants access to the most highly desired occupations. Pierre Bourdieu's notion of institutionalised cultural capital and his views of the educational system as a site of social reproduction provide the entry point for my theoretical argument. I find that the nonrecognition of foreign credentials and dismissal of foreign work experience systematically excludes immigrant workers from the upper segments of the labour market. This finding is based on data from interviews with institutional administrators and employers in Greater Vancouver who service or employ immigrants from South Asia and the former Yugoslavia.