University of Winnipeg

About: University of Winnipeg is a education organization based out in Winnipeg, Manitoba, Canada. It is known for research contribution in the topics: Population & Context (language use). The organization has 3235 authors who have published 6413 publications receiving 150564 citations. The organization is also known as: U of W.

A 229-year dendroclimatic-inferred record of forest fire activity for the Boreal Shield of Canada

Abstract: Six independent tree-ring reconstructions of summer drought were calibrated against instrumental fire data to develop a 229-year dendroclimatic-inferred record of fire activity (annual area burned and fire occurrence) on the Boreal Shield, Canada. As a means of validating the statistical reconstructions of the fire activity, a comparison was made with a stand age distribution derived from a regional time-since-last-fire map for an area located at the transition between the mixedwood and coniferous boreal forests of south-western Quebec. Calibration statistics indicated that 31% of the area burned variance and 45% of the fire occurrence variance could be accounted for by the six drought reconstructions. The verification statistics indicated a tendency for the statistical reconstructions of the fire activity to reproduce with confidence both high and relatively low frequency variations in fire. Episodes of succeeding years with important fire activity were estimated for 1789-1796, 1820-1823, 1837-1841, 1862-1866, 1906-1912, 1919-1922, 1933-1938, and 1974-1977. Also estimated were periods of reduced forest fire activity, particularly in the occurrence rate of extreme fire years, from c. 1850 to 1900 and again during the second half of the 20th century. Correlation analysis between the statistical reconstruction of the area burned and the stand age distribution suggested that both proxies shared similar information on the fire activity. Correlation maps, however, indicated that variability in the statistical reconstructions was not necessarily representative of fire activity in all regions of the Boreal Shield.

Achieving meaningful public participation in the environmental assessment of hydro development: case studies from Chamoli District, Uttarakhand, India

Abstract: Uttarakhand, India has great potential for hydro development because of its mountainous environment and fast flowing rivers While growth in the hydro sector could facilitate industrial development and improve social well-being in the state, it could also have severe negative impacts on social-ecological systems Using a qualitative methodology involving a review of documents, field observations, and over 100 interviews with government, industry officials and community members, the research investigated two large hydro projects in the Chamoli District The results show that public participation in project planning and implementation did not exemplify characteristics of meaningful involvement The participation processes would have been improved with greater opportunities for advanced, decentralised, and more active local involvement The conclusion is that the central and state governments should play a more assertive role in regulating large-scale hydro development in Uttarakhand, to facilitate meaningfu

Northern forest winters have lost cold, snowy conditions that are important for ecosystems and human communities

Abstract: Winter is an understudied but key period for the socioecological systems of northeastern North American forests. A growing awareness of the importance of the winter season to forest ecosystems and surrounding communities has inspired several decades of research, both across the northern forest and at other mid- and high-latitude ecosystems around the globe. Despite these efforts, we lack a synthetic understanding of how winter climate change may impact hydrological and biogeochemical processes and the social and economic activities they support. Here, we take advantage of 100 years of meteorological observations across the northern forest region of the northeastern United States and eastern Canada to develop a suite of indicators that enable a cross-cutting understanding of (1) how winter temperatures and snow cover have been changing and (2) how these shifts may impact both ecosystems and surrounding human communities. We show that cold and snow covered conditions have generally decreased over the past 100 years. These trends suggest positive outcomes for tree health as related to reduced fine root mortality and nutrient loss associated with winter frost but negative outcomes as related to the northward advancement and proliferation of forest insect pests. In addition to effects on vegetation, reductions in cold temperatures and snow cover are likely to have negative impacts on the ecology of the northern forest through impacts on water, soils, and wildlife. The overall loss of coldness and snow cover may also have negative consequences for logging and forest products, vector-borne diseases, and human health, recreation, and tourism, and cultural practices, which together represent important social and economic dimensions for the northern forest region. These findings advance our understanding of how our changing winters may transform the socioecological system of a region that has been defined by the contrasting rhythm of the seasons. Our research also identifies a trajectory of change that informs our expectations for the future as the climate continues to warm.

Integration of IEEE 802.11 WLANs with IEEE 802.16-based multihop infrastructure mesh/relay networks: A game-theoretic approach to radio resource management

Abstract: One of the promising applications of IEEE 802.16 (WiMAX)-based wireless mesh/relay networks is to provide infrastructure/backhaul support for IEEE 802.11-based mobile hotspots. In this article we present an architecture for integrating IEEE 802.11 WLANs with IEEE 802.16-based multihop wireless mesh infrastructure to relay WLAN traffic to the Internet. The major research issues in this integrated architecture are outlined and related work is reviewed. A game-theoretic model is developed for radio resource management in this integrated network architecture. In particular, a multiplayer bargaining game formulation is used for fair bandwidth allocation and optimal admission control of different types of connections (e.g., WLAN connections, relay connections, and connections from standalone subscriber stations) in an IEEE 802.16 base station/mesh router. Both connection-level and inconnection-level performances for this bandwidth management and admission control framework are presented

Enhancement of mood and self-esteem as a result of giving and receiving compassionate love.

Abstract: Compassionate love may be the type of love that leads to the most social good for those who are its recipients. However, self-benefits may also occur as a result of experiencing compassionate love for others. Three studies were conducted in which people were asked to recall a specific experience of compassionate love and to indicate how they were affected on several dimensions (mood, self-esteem, closeness to others). In Study 1, participants were asked to recall an experience of compassionate love without specification of target. A manipulation of the context of compassionate love (relational vs. non-relational) was included in Studies 2 and 3. A comparison of compassionate love given versus received was also included in Study 3. Overall, the results indicated that people reap many positive benefits of experiencing compassionate love for others. Differences in perceived outcomes to the self based on relational context and role (giver vs. receiver) were also found and discussed.