Intermittent rivers comprise a significant proportion of river networks globally and their spatial extent is predicted to increase with rising water abstraction pressures. Despite this, the ecological implications of hydrological modifications within intermittent rivers have received limited research attention. This paper examines macroinvertebrate assemblages across intermittent and perennial ...

Multi-agent path planning (MAPP) is the problem of collision-free trajectories from start to goal locations for a team agents. This work explores relatively unexplored setting MAPP where streams agents have go through starts and goals with high throughput. We tackle this by formulating new variant called periodic in which timing agent appearances periodic. The objective find plan, set that can ...

Real-time media servers need to service hundreds and, possibly, thousands of clients, each with their own quality of service (QoS) requirements. To guarantee such diverse QoS requires fast and efficient scheduling support at the server. This paper describes the practical issues concerned with the implementation of a scalable real-time packet scheduler resident on a server, designed to meet serv...

A child's growth achievement is a useful indicator of his well-being and nutritional status. This can easily be assessed by comparing his growth parameters such as weight, length and head ci rcumference, with norms or standards derived from a relatively healthy population of genetically similar children. Such standards are essential to professionals working with children, for example paediatric...

W E appreciate the comments by Mendes de Leon (2007) regarding the challenges involved in using multilevel models to analyze aging effects in samples of older adults that combine multiple birth cohorts. The core argument in the latter portion of his commentary focuses on the advantages of using continuous, rather than categorical, outcome variables when analyzing aging-related change. We are in...

Mass inflow in barred galaxies has been invoked to account for a wide variety of phenomena, but until now direct evidence for inflow has been lacking. We present Fabry-Perot Hα observations of the barred spiral galaxy NGC 1530 from which we determine velocities of the ionized gas for the entire region swept by the bar. We compare the velocity field to models of gas flow in barred spirals and sh...

Beaver-created ponds and dams, on the rise in the northeastern United States, reshape headwater stream networks from extensive, free-flowing reaches to complexes of ponds, wetlands, and connecting streams. We examined seasonal and annual rates of nitrate transformations in three beaver ponds in Rhode Island under enriched nitrate-nitrogen (N) conditions through the use of N mass balance techniq...

Mass inflow in barred galaxies has been invoked to account for a wide variety of phenomena, but until now direct evidence for inflow has been lacking. We present Fabry-Perot Hα observations of the barred spiral galaxy NGC 1530 from which we determine velocities of the ionized gas for the entire region swept by the bar. We compare the velocity field to models of gas flow in barred spirals and sh...

BACKGROUND Falls occur not only in the forward direction, but also to the side and backward. The purpose of this study was to develop a portable and valid tool to measure limits of stability in the anterior-posterior and medial-lateral directions. METHODS Two hundred fifty-four community-dwelling older persons were administered the Berg Balance Test (BBT), the Timed Up & Go Test (TUG), and th...