نتایج جستجو برای: guard rail
تعداد نتایج: 17006 فیلتر نتایج به سال:
Global trade has increased nearly 100-fold since 1950, according to the World Trade Organization. Today, major changes in trade are occurring with the advent of mega-ships that can transport thousands more containers than cargo ships now in use. Because global trade is expected to increase dramatically, the railroad industry-in the U.S. alone-has invested more than $5 billion a year over the pa...
The mechanism for picking guards in Tor suffers from security problems like guard fingerprinting and from performance issues. To address these issues, Hayes and Danezis proposed the use of guard sets, in which the Tor system groups all guards into sets, and each client picks one of these sets and uses its guards. Unfortunately, guard sets frequently need nodes added or they are broken up due to...
MOTIVATION Public archives contain thousands of trillions of bases of valuable sequencing data. More than 40% of the Sequence Read Archive is human data protected by provisions such as dbGaP. To analyse dbGaP-protected data, researchers must typically work with IT administrators and signing officials to ensure all levels of security are implemented at their institution. This is a major obstacle...
While largely due to conditions outside their control, the configuration and setting of current intermodal rail terminals contribute to congestion and increased freight handling volumes that have resulted in additional transportation costs for shippers and carriers. Although a substantial body of research has focused on improving the efficiency of port operations and multi-modal freight shipmen...
BACKGROUND Concerns have been raised about the safety of split-side bed rails for patients in the UK. OBJECTIVES To investigate whether split-side rails were more likely to be associated with entrapment and injury of patients than other bed rail types. To establish whether there was a difference in the site of injury caused by different bed rail types and whether the outcome of the injury (de...
A self-timed radix-2 division scheme for low power consumption is proposed. By replacing dual-rail dynamic circuits in non-critical data paths with single-rail static circuits, power dissipation is decreased, yet performance is maintained by speculative remainder computation. SPICE simulation results show that the proposed design can achieve 33.8-ns latency for 56-bit mantissa division and 47% ...
The modulation of guard cell function is the basis of stomatal closure, essential for optimizing water use and CO2 uptake by leaves. Nitric oxide (NO) in guard cells plays a very important role as a secondary messenger during stomatal closure induced by effectors, including hormones. For example, exposure to abscisic acid (ABA) triggers a marked increase in NO of guard cells, well before stomat...
The usual approach to mitigate multiple access interference (MAI) in the uplink of cellular OFDMA based systems is to use relatively large cyclic prefixes as time domain guard periods. In this paper, we suggest to use a combination of short time domain guard periods and frequency domain guard bands to protect against MAI instead. Guard bands can be added and removed as necessary and, thus, incr...
CargoVibes: human response to vibration due to freight rail traffic David Waddington, James Woodcock, Michael G Smith, Sabine Janssen & Kerstin Persson Waye To cite this article: David Waddington, James Woodcock, Michael G Smith, Sabine Janssen & Kerstin Persson Waye (2015) CargoVibes: human response to vibration due to freight rail traffic, International Journal of Rail Transportation, 3:4, 23...
1. Classification of Transit Systems 2. Bus Transit System 3. Trolleybus System 4. Rail Transit Systems 5. Tramway/Streetcar and Light Rail Transit LRT 6. Rapid Transit or Metro 7. Automated Guided Transit Systems 8. Regional and Commuter Rail 9. Special Technology Transit Systems 10. Transit Line Scheduling 11. Transit Planning and Selection of Transit Modes 12. Present and Future Role of Urba...
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