The importance of computer security in order to maintain the confidentiality, integrity and availability of data and information is well known. Different mechanisms have been proposed in order to guarantee the security of information like access control, encipherment, data integrity and authentication; however, those security mechanisms have vulnerabilities that are exploited. This paper presen...

The relative bio-optical variability within Lake Victoria was analyzed through the spatio-temporal decomposition of a 1997-2004 dataset of remotely-sensed reflectance ratios in the visible spectral range. Results show a regular seasonal pattern with a phase shift (around 2 months) between the south and north parts of the lake. Interannual trends suggested a teleconnection between the lake dynam...

Switzerland’s National Open Access Strategy aims to have all tax-payer funded research publications available in open access by 2024. This article introduces the institutional landscape which this transformation is taking place, focuses on two examples of current concerns that these changes bring and closes with a brief look at what lies beyond approaching milestone.

The biochemical processes and associated water quality in many lakes mainly depend on their transport behaviors. Most existing methodologies for investigating transport behaviors are based on physically based numerical models. The pollutant transport trajectory and residence time of Poyang Lake are thought to have important implications for the steadily deteriorating water quality and the assoc...

both heliophysical and anthropogenic (wastewater) effects on zooplankton biomass and abundance of the imandra lake (the largest subarctic lake at kola peninsula, russia) were investigated during the 1990 - 2003 period. we used different indexes of solar activity (sunspot numbers and uv- radiation values) as heliophysical factors. information about uv- radiation values was derived from satellite...

in this study some thermodynamic parameters including freezing point, boiling point and the vapor pressure of urmia lake salt water were investigated as some important environmentally monitored physicochemical properties of urmia lake. in this regard salt concentration is chiefly responsible for the modification of the thermodynamic properties of urmia lake water which affects its overall envir...