The Transportation Research Forum, founded in 1958, is an independent, nonprofit organization of transportation professionals who conduct, use, and benefit from research. Its purpose is to provide an impartial meeting ground for carriers, shippers, government officials, consultants, university researchers, suppliers, and others seeking exchange of information and ideas related to both passenger...

In three-tiered web applications, some form of admission control is required to ensure that throughput and response times are not significantly harmed during periods of heavy load. We propose Q-Cop, a prototype system for improving admission control decisions that computes measures of load on the system based on the actual mix of queries being executed. This measure of load is used to estimate ...

In this paper, the Alpha Tuning Mechanism for distributed queue dual bus (DQDB) networks is proposed. This mechanism achieves a match between the users’ demand and the resulting protocol’s service patterns. The use of a tunable a-parameter (representing some fictitious user population) and access protection lead to dynamic bandwidth control capability. The inherently position dependent fairness...

Cable suspended robots support a moving platform (MP) in space by several spatially arranged cables with computer-controlled winches. The winches are mounted on base platform (BP). Compared to conventional robots, it is possible to control not only the translational motion of the payload but also its orientation in order to perform, for example, loads handling. By this, cable suspended robots c...

The purpose of this prospective cohort study was to investigate physical, occupational, and psychosocial risk factors for musculoskeletal injuries (MSI) in deployed female soldiers. Before deployment, participants completed performance testing and surveys and after deployment an additional survey detailing occupational demands and MSI. Data analyzed found 57/160 (36%) suffered 78 MSI. In unadju...

A heavy load drop into the spent fuel pool, or onto the spent fuel pool wall, can affect the structural integrity of the spent fuel pool. A loss-of-inventory from the spent fuel pool could occur as a result of a heavy load drop. The staff evaluated heavy loads as Generic Technical Activity A-36, which resulted in the publication of NUREG-0612 [Ref. 1]. Cask handling is expected to be the domina...

The prevalence of data-parallel applications has made near-data scheduling an important problem. An example is the map task scheduling in the map-reduce framework. The challenge lies in that the processing rate depends on the task-node pair, which constitutes a hard affinity scheduling problem. Moreover, despite the uniform placement of data, the data being processed at a given time often conce...

Wearable robotic devices can restore and enhance mobility. There is growing interest in designing devices that reduce the metabolic cost of walking; however, designers lack guidelines for which joints to assist and when to provide the assistance. To help address this problem, we used musculoskeletal simulation to predict how hypothetical devices affect muscle activity and metabolic cost when wa...

the increasing world demand for fish cannot be met by capture fisheries. aquaculture production is increasing and nowadays cage culture has an important role in meeting the world’s fish demand. the design of the physical structure of a cage is determined by the oceanographic conditions of the culture site. each design is site-specific and knowledge of the topography, wind force and direction, p...

BACKGROUND In Germany, about 70,000 teachers and educational staff were teaching at more than 3,000 special schools during the school year 2010/2011. Nursing services like lifting pupils form a substantial part of the work content of the staff at special schools. Since nursing care often involves carrying and lifting pupils, there is a reason to assume an adverse effect on the musculoskeletal h...