Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 67 for “"Average speed"”.
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Freeway speed-flow relationships under rain and congested conditions
… impact of rain and congested conditions on the average speed estimates is provided in this study. Although the Highway Capacity Manual (HCM) provides some discussion on the impact of adverse weather on speed-flow relationships, these impacts are not quantified. Using data collected under rain …
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On implementing sparse matrix-vector multiplication on intel platform
… throughputs for 135 matrices (89%) with an average speed improvement of 2.3x and maximum speed improvement of 27.5x. Our kernel outperforms MKL Inspector-executor SpMV CSR for 109 matrices (73%) with an average speed improvement of 1.5x and maximum speed improvement of 3.0x. Moreover, SpMV …
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ΔΙΕΡΕΥΝΗΣΗ ΟΡΙΣΜΕΝΩΝ ΧΑΡΑΚΤΗΡΙΣΤΙΚΩΝ ΤΟΥ ΣΥΣΤΗΜΑΤΟΣ ΟΔΗΓΟΣ/ΟΧΗΜΑ ΣΕ ΣΧΕΣΗ ΜΕ ΤΗΝ ΟΔΙΚΗ ΑΣΦΑΛΕΙΑ, ΤΑ ΓΕΩΜΕΤΡΙΚΑ ΚΑΙ ΤΑ ΛΟΙΠΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΟΥ ΔΡΟΜΟΥ: ΕΦΑΡΜΟΓΗ ΣΤΗΝ ΑΞΙΟΛΟΓΗΣΗ ΚΑΙ ΙΕΡΑΡΧΗΣΗ ΤΟΥ ΟΔΙΚΟΥ ΔΙΚΤΥΟΥ
… GREECE. TWO CRITERIA ARE BEING USED; FIRST THE AVERAGE SPACE SPEED OF ALL VEHICLES, WHICH IS CONSIDERED AS ONE OF THE MOST IMPORTANT PARAMETERS OF THE SO CALLED DRIVER/VEHICLE SYSTEM, AND SECOND A ROAD SAFETY ESTIMATOR. AT A FIRST STEP, MATHEMATICAL MODELS RELATING THE AVERAGE SPEED WITH …
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Short-term effects of bulkheads on the bayshore of Fire Island, New York
… the field investigation. The northwest winds (average speed of 7.1 mIs) resulted in volumetric loss of sediment on the adjacent beach. The northeast winds (average speed of 6.6 mIs) resulted in considerable sediment deposition on the adjacent beach. Effects of the bulkhead during northwest …
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An economic model of highway fatalities
… 1985 was collected for the following variables: average speed, speed variance, percentage of drivers wearing seat belts, percentage of licensed male drivers, percentage of drivers under 25 years of age, drinking age for beer, per capita alcohol consumption, percentage of urban population, and …
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Development and Validation of a Simplified Microscopic Multilane Model for Traffic Flow Simulation
… of field data and CELLSIM for trajectories, average speed, density and volume show very close agreement. Statistical comparison of macroscopic parameters with other CF models indicates that CELLSIM performs as well as detailed models. CELLSIM is also able to replicate the hysteresis effect.
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Quantifying the Impact of Traffic-Related and Driver-Related Factors on Vehicle Fuel Consumption and Emissions
… modeling (i.e. Mobile5 and EMFAC7) uses the average speed as a single explanatory variable. However, up to date there has not been a systematic attempt to quantify the impact of various travel and driver-related factors on vehicle fuel consumption and emissions. This thesis first …
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Link travel time estimation based on connected vehicle probe data
… can include link identification, instantaneous speed, location and time, is generated by a generation protocol. Generation protocols can be changed by system operators to allow data collection to be tailored to specific situations. In theory, generated snapshots are added to the buffer in OBU …
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An observational study of freeway lane-changing behaviour
… not to be in a slow-moving lane. Therefore, the average driver who finds himself in such a lane moves into a neighboring faster lane, usually after a certain time-lag. This time-lag depends on the dynamic characteristics of the vehicle, the availability of acceptable gaps, and the driver risk, …
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A methodology for locating fire stations at airports
… methodology is applied three times, changing the average speed vehicles are assumed to be capable of traveling on the runway system each time. For an average speed of 40 m.p.h., it is shown that fire vehicles, responding from the four stations at the airport, are not capable of reaching every …
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Evaluation of Driver Performance While Making Unprotected Intersection Turns Utilizing Naturalistic Data Integration Methods
… time. Kinematic dependent variables include peak/average speed, and peak longitudinal and lateral acceleration. Results indicated that visual entropy and peak speed differs amongst drivers of the three age-groups (older, middle-age, teens) in the presence of traffic in the intersecting streams …
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Evaluating the impact of interventions on network capacity
… to passenger-car-unit (PCU)-km per hour. The average speeds of the vehicles at capacity are also compared. To understand the impact of interventions on network capacity, street-works and illegally parked vehicles are simulated at different levels of complexity. The common capacity. currencies …
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Achieving universal liaisons and healthcare contact center centralization through the use of decision support tools
… the use of decision support tools can reduce Average Speed to Answer by 70 seconds even with an increase to Average Handle Time by 30 seconds. This research also identifies key features the tool may need to facilitate widespread adoption by clinicians and CSL alike.</p>
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Characterisation of vehicle drive cycles for peak hour traffic: implications for emissions modelling
… These methods are often reliant on the ‘average speed’ parameter. Evidence suggests that for large urban road networks this parameter is unrepresentative, particularly for peak hour periods. The aim of the research described was to investigate the characterisation of links with respect to …
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The Effect of Topography on Surface Behavior of Pseudomonas aeruginosa
… we found that the frequent obstacles reduced the average speed of a bacterium from 6.2 0.3 µm per 5 min on a flat surface to 2.1 0.3 µm per 5 min on an array of 2 µm particles. Furthermore, we observed that bacteria often move in-between particles, suggesting that bacteria have difficulty …
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Modeling gap acceptance at freeway merges
… model is affected by traffic conditions such as average speed in the mainline, interactions with lead and lag vehicles, and urgency of the merge. Transferability tests for the stability of the model parameters between the two datasets are conducted. The single level gap acceptance model is …
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Analysis of China's education market and the entrepreneurial strategy of a Chinese education venture
… country's future. However, we find a slower than average speed, in the spread of Internet technologies in education. On the other hand, education in China is very backward. Millions of people who live in second-tier cities, small towns and rural areas do not have access to high-quality education. …
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An intensive study of the currents and general hydrology of an anomalous upwelling area off South West Africa
… currents were not directly affected by wind. Average surface current speeds were between 0,2 and 0,3 kts. Sustained southerly winds caused a deepending of the upper layer and were accompanied ~y slower currehts. Selected data recorded during the diurnal wind regime yielded the relationship: …
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The Effects of Life Stress and Risk-Taking Style on Risk Perception and Driver Performance
… in each zone of the scenario, lane placement, average speed and standard deviation of speed over zones, number of accidents, and steering reversals. Evaluation of these variables indicated that risk-taking style and stress were good predictors of driver performance, though not as good as the …
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Multiple-Path Generation to Improve Autonomous Vehicle Planning
… proposed framework results in a 37% increase in average speed and a 24% decrease in time to reach the final destination compared to the current implementation.
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