Based on a unique dataset of more than 50 000 observations of ice phenology from 1213 lakes and 236 rivers in 12 different countries, we show that interannual variations in the timing of ice-on and ice-off on lakes and rivers are not equally pronounced over the entire Northern Hemisphere, but increase strongly towards geographical regions that experience only short periods during which the air ...

INTRODUCTION This study describes the uses of a control chart in the malaria surveillance at the local level, signaling whether there is a need to intensify or adapt control measures. METHODS The districts of Cruzeiro do Sul (n=14), State of Acre, Brazil, were classified into three groups: I) those with an incidence lower than expected; II) those with an incidence within the expected range; a...

Policy-makers often rely on public opinion polls to decide which political projects to pursue. We study how the use of opinion polls influences policy outcomes if respondents feel pressured to offer ”socially desirable” views when answering the pollsters’ questions. Our results indicate that this type of social pressure can lead to second-best policy outcomes even if politicians are aware of th...

AIM The aim of the study is to evaluate the changes of the kinetic parameters of gait in patients with supratentorial unilateral stroke in the chronic period (SUSChP). MATERIAL AND METHODS The study was conducted with 67 patients with SUSChP (56 patients included in the experimental group - 32 men and 24 women, with duration of disease 7.8 ± 2.0 months, and 11 patients in the control group - ...

OBJECTIVE Our objective was to pilot collaborations between two urban farms with two corner stores to increase access to fresh produce in low-income neighbourhoods. DESIGN We conducted a pre-post evaluation of two farm-store collaborations using quantitative distribution and sales data. Using semi-structured interviews, we qualitatively assessed feasibility of implementation and collaboration...

This paper explores, through a number of case studies, the application of Group Support Systems for capacity building initiatives in various sectors in Africa. A model is introduced on the adoption of GSS in an African context. Notwithstanding skeptical expectations with respect to the successful application of the technology, the results clearly indicate (1) that there is support from key part...

Subglacial floods (jökulhlaups) are well documented as occurring beneath present day glaciers and ice caps. In addition, it is known that massive floods have occurred from ice-dammed lakes proximal to the Laurentide ice sheet during the last ice age, and it has been suggested that at least one such flood below the waning ice sheet was responsible for a dramatic cooling event some 8000 years ago...

Sea-ice thicknesses observed in Canadian coastal waters with helicopter-borne electromagnetic–laser sensors show large interannual variability caused by atmospheric fluctuations in two years for two areas where surveys were repeated, one in the Amundsen Gulf of the Canadian Beaufort Sea and one over the Labrador Shelf. For the Amundsen Gulf, the bimodal ice thickness peaks shifted by 40 cm to t...