Autonomous agricultural robots increasingly have an important role in tasks such as transportation, crop monitoring, weed detection etc. These require the to travel different locations field. Reducing time for this can greatly reduce global task completion and improve availability of robot perform more number tasks. Looking at in-field logistics supporting human fruit pickers a relevant scenari...

Presently high-speed tracks are built on a large scale. Although ballasted tracks are still popular, more and more slab tracks are constructed. They have some significant advantages such as low maintenance, high availability, low structure height, and low weight. The main emphasis of this paper is on the application of non-ballasted concepts for high-speed operation. Special attention is given ...

In a volunteer-based grid computing environment, one big challenge for effective job allocation is resource availability. As resources in this environment are volatile and may become frequently unavailable, matching guest jobs to suitable resources is very important. To improve scheduling performance in such an unreliable computing environment, especially in terms of avoiding job completion fai...

Aquatic contaminants, specifically polychlorinated biphenyls (PCBs), a class of persistent organic contaminants, have been associated with sublethal effects on reproduction in fishes. Female brown bullhead (Ameiurus nebulosus) were used to assess variation in reproductive traits across eight populations differing in sediment sum PCB concentrations in the Lower Great Lakes region. Differences in...

As a kind of important pollutants, trace metals and the pollution have been become a concerned worldwide environmental problem. Despite the fact that the bioavailability of trace metals indicated by their speciation has been an indispensible parameter in the assessment and treatment of trace metal pollution, many studies suggest that the bioavailability of trace metals may change according to e...