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RISA Government Engineer's Personal Liability
Publisher: American Society of Civil Engineers
Abstract: An engineer employed by the Executive Branch of the federal government has the same rights as nearly all other employees with similar responsibility levels. These rights originally developed from the sovereign immunity of ...
New Positioning Power for the Surveyor
Publisher: American Society of Civil Engineers
Abstract: A new field positioning capability is now available for engineering surveys using the TRANSIT satellite transmissions and the JMR‐2000 Global Surveyor. Three dimensional position transfers over “one‐hop” distances of 500 ...
The RAW Filter: An Improvement to the Robert–Asselin Filter in Semi-Implicit Integrations
Publisher: American Meteorological Society
Abstract: rrors caused by discrete time stepping may be an important component of total model error in contemporary atmospheric and oceanic simulations. To reduce time-stepping errors in leapfrog integrations, the Robert?Asselin?Williams ...
Achieving Seventh-Order Amplitude Accuracy in Leapfrog Integrations
Publisher: American Meteorological Society
Abstract: he leapfrog time-stepping scheme makes no amplitude errors when integrating linear oscillations. Unfortunately, the Robert?Asselin filter, which is used to damp the computational mode, introduces first-order amplitude ...
A Proposed Modification to the Robert–Asselin Time Filter
Publisher: American Meteorological Society
Abstract: The Robert?Asselin time filter is widely used in numerical models of weather and climate. It successfully suppresses the spurious computational mode associated with the leapfrog time-stepping scheme. Unfortunately, it also ...
Support Vector Machines Model of the Nonlinear Hydrodynamics of Fixed Cylinders
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Data-driven modeling is considered as a prospective approach for many conventional physical problems including ocean applications. Among various machine learning techniques, support vector machine stands out as one of the ...
Transmission of Engine Harmonics to Synchronizer Mechanisms in Dual Clutch Transmissions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Synchronizer mechanisms play an important role in the selection and engagement of gears in manual, automated manual, and dual clutch transmissions (DCTs). These mechanisms rely heavily on the balancing of torque loads in ...
Statistical Comparison of Bioassays for Assessment of Toxicity of Organic Components of Wastewater to Activated Sludge
Publisher: American Society of Civil Engineers
Abstract: In aquatic toxicity testing, no single test species responds appropriately to all toxicants. Therefore test batteries consisting of several individual assays are becoming more common. The species comprising a test battery ...
Sudden Stratospheric Warmings as Noise-Induced Transitions
Publisher: American Meteorological Society
Abstract: Sudden stratospheric warmings (SSWs) are usually considered to be initiated by planetary wave activity. Here it is asked whether small-scale variability (e.g., related to gravity waves) can lead to SSWs given a certain ...