Time filter

Source Type

Winnipeg, Canada

The University of Winnipeg is a public university in Winnipeg, Manitoba, Canada that offers undergraduate faculties of art, business and economics, education, science and kinesiology and applied health as well as graduate programs. UWinnipeg's founding colleges were Manitoba College and Wesley College, which merged to form United College in 1938. The University of Winnipeg was established in 1967 when United College received its charter. The governance was modeled on the provincial University of Toronto Act of 1906 which established a bicameral system of university government consisting of a senate , responsible for academic policy, and a board of governors exercising exclusive control over financial policy and having formal authority in all other matters. The president, appointed by the board, was a link between the bodies to perform institutional leadership.UWinnipeg's current President and Vice-Chancellor is Dr. Annette Trimbee , succeeding Dr. Lloyd Axworthy who served from 2004 to 2014.Maclean's magazine and the Globe and Mail newspaper consistently rank the university in the top fifteen of all Canadian universities whose primary focus is undergraduate education in the category of student satisfaction. In 2013 the U of W ranked 13th out of 19 primarily undergraduate institutions.The U of W was the first university in Canada to ban the sale of plastic bottled water on campus. Wikipedia.

Boylee J.G.,Indiana State University | Willis C.K.R.,University of Winnipeg
Frontiers in Ecology and the Environment

White-nose syndrome (WNS) is a mysterious condition affecting populations of hibernating bats in the northeastern US. Little is known about its physiological effects on bats and no intervention has so far been proposed to slow associated mortality. We use an individual-based population model to examine how disruption of normal hibernation or pre-hibernation physiology could lead to the pattern of mortality that has been observed. We present evidence that artificial warming of localized areas within hibernacula could increase survival of WNS-affected bats during winter by lessening the energetic costs of periodic arousals. The model suggests that localized thermal refugia of 28°C could improve survival by up to 75%, depending on how WNS acts to disrupt energy balance. This approach has yet to be tested, but it could serve as a stopgap measure to slow population declines until a solution is found, or to preserve remnant bat populations if WNS becomes ubiquitous throughout the ranges of affected species. © The Ecological Society of America. Source

Saari K.,University of Winnipeg
Journal of Combinatorial Theory. Series A

It is a fundamental property of non-letter Lyndon words that they can be expressed as a concatenation of two shorter Lyndon words. This leads to a naive lower bound ⌈log2(n)⌉ + 1 for the number of distinct Lyndon factors that a Lyndon word of length n must have, but this bound is not optimal. In this paper we show that a much more accurate lower bound is ⌈logφ(n)⌉ + 1, where φ denotes the golden ratio (1+5)/2. We show that this bound is optimal in that it is attained by the Fibonacci Lyndon words. We then introduce a mapping Lx that counts the number of Lyndon factors of length at most n in an infinite word x. We show that a recurrent infinite word x is aperiodic if and only if Lx≥Lf, where f is the Fibonacci infinite word, with equality if and only if x is in the shift orbit closure of f. © 2013 Elsevier Inc. Source

We examined the effect of regional climate warming on the phenology of butterfly species in boreal forest ecosystems in Manitoba, Canada. For the period 1971-2004, the mean monthly temperatures in January, September, and December increased significantly, as did the mean temperatures for several concurrent monthly periods. The mean annual temperature increased ≈ 0.05°C/yr over the study period. The annual number of frost-free days and degree-day accumulations increased as well. We measured the response of 19 common butterfly species to these temperature changes with the date of first appearance, week of peak abundance, and the length of flight period over the 33-yr period of 1972-2004. Although adult butterfly response was variable for spring and summer months, 13 of 19 species showed a significant (P < 0.05) increase in flight period extending longer into the autumn. Flight period extensions increased by 31.5 ± 13.9 (SD) d over the study period for 13 butterfly species significantly affected by the warming trend. The early autumn and winter months warmed significantly, and butterflies seem to be responding to this warming trend with a change in the length of certain life stages. Two species, Junonia coenia and Euphydryas phaeton, increased their northerly ranges by ≈ 150 and 70 km, respectively. Warmer autumns and winters may be providing opportunities for range extensions of more southerly butterfly species held at bay by past climatic conditions. Source

Silvestre B.S.,University of Winnipeg
Journal of Cleaner Production

Abstract In the last decade, sustainable supply chain management has become a key topic in the sustainability literature as well as a buzzword in industry and policy circles. Although research has made substantial contributions, there is a lack of understanding on how focal companies operating in emerging economies can lead the implementation of sustainability into their supply chains. This research connects and advances the constructs of cleaner production, sustainability and supply chains by exploring a classic case of a focal company operating in an emerging economy that, even facing considerable challenges, has been able to succeed in transforming its entire supply chain. Drawing from stakeholder theory and contingency theory, this research offers four key contributions to the sustainability and supply chain discourses as follows: 1) it proposes an innovation-centered approach to sustainable supply chain management, by adapting and extending the TCOS uncertainty framework; 2) it suggests that the way a focal company manages and is influenced by its established network of relationships shape the evolution of the supply chain sustainability trajectories; 3) it argues that supply chains are dynamic entities and should then be considered and understood through the lenses of evolutionary approaches; and 4) it suggests that the implementation and management of sustainable supply chains are context-specific challenges and therefore theoretical, managerial and policy generalizations are difficult to be achieved. © 2014 Elsevier Ltd. All rights reserved. Source

Forbes S.,University of Winnipeg
Biology Letters

Siblings within the same family often differ dramatically in phenotype. Some differences are attributable to initial maternal handicaps (birth or hatching asynchrony, differences in egg or neonate size and hormonal or antioxidant titre); but differences among siblings may also arise from differences in the brood-rearing environment that offspring experience. Here, I use a model system-a long-term study of nestlings in an altricial bird-to study how an initial maternal handicap, hatching asynchrony, regulates the effective social environment of siblings in the same family as measured by offspring survival. The interaction of family size and structure generated wide differences in the effective environments of siblings living in the same physical space (a nest), and reared by the same parents, in the same family structure. Social rank was the key component of the unshared environment of contemporary siblings, and was alone sufficient to generate near-maximal differences in offspring performance. Nestlings sitting side-by-side effectively lived in different worlds. © 2010 The Royal Society. Source

Discover hidden collaborations