The formation and break-up of ice on the Great Lakes as observed by regular ice reconnaissance flights conducted by the Meteorological Service of Canada is discussed in terms of the meteorological parameters involved. Ice cover on the individual lakes over the past four years is correlated with the winter temperature regime and an index of the heat stored in each lake using the concept of cumul...

Overwintering habitat for Arctic freshwater fish is essential, such that understanding the distribution of winter habitat quality at the landscape-scale is warranted. Adequate dissolved oxygen (DO) is a major factor limiting habitat quality in the Arctic region where ice cover can persist for 8 months each year. Here we use a mixed-effect model developed from 20 lakes across northern Alaska to ...

Documenting whether a biotic taxon is native or alien to an ecosystem has theoretical value for ecological and evolutionary studies, and has practical value because it can potentially identify a taxon as a desirable component of an ecosystem or target it for removal. In some cases, however, such background information is inadequate or unavailable. Here we use paleo-DNA to re-evaluate the histor...

The successful leader must first make the commitment to practice evidence-based leadership by examining best practices and modeling her/his leadership practice after these models. We know from a plethora of evidence that the relationship-based leader who is also grounded in good operational abilities and can paint the picture of a compelling future is much more effective than the leader who is ...

ABSTRACT This paper illustrates how locally appropriate methods can be used to collect quantitative data from illiterate respondents. This method uses local beads to represent quantities, which is a novel yet potentially valuable methodological improvement over standard Western survey methods.

The 53.1 acre Stone Road Retail property, located on the northeast corner of Edinburgh & Stone Road in Guelph, is comprised of the following: 9.9 acres Edinburgh Market Place constructed in 1996; 6.4 acres zoned service/commercial, 9 acres high density residential and 27.7 acres institutional/research park. The 9 acre property, leased to Richmond Properties Ltd is comprised of private sector re...

Prediction markets and other reward mechanisms based on proper scoring rules can elicit accurate predictions about future events with public outcomes. However, many questions of public interest do not always have a clear answer. For example, facts such as the effects of raising or lowering interest rates can never be publicly verified, since only one option will be implemented. In this paper we...

Most high-altitude lakes are more sensitive to global warming than the regional atmosphere. However, most existing climate models produce unrealistic surface temperatures on the Tibetan Plateau (TP) lakes, and few studies have focused on the influence of ice surface albedo on high-altitude lakes. Based on field albedo measurements, moderate resolution imaging spectrometer (MODIS) albedo product...

While the aged as a group have better access to health care since the inception of Medicare, there are subsets of the population that are still vulnerable to large out-of-pocket expenses. The focus of this analysis is on those segments of the Medicare population which are particularly vulnerable to access problems due to their personal characteristics. In particular, using data from the Nationa...

BACKGROUND This article reports on the use of the 'neighborhood method' to measure the prevalence and basic characteristics of children who became separated from their parents or usual caregivers subsequent to an attack by the M23 militia group in North Kivu, Democratic Republic of the Congo. METHODS A two-stage household cluster survey was conducted in 522 households in North Kivu in August ...