Two different designs of analog correlators for radiometry are compared in this paper. A continuum correlator based on a microwave nonlinear device is a simple and inexpensive way to detect wide-band polarized signals. Analysis and extensive measurements including linearity, dynamic range, amplitude response, phase balance, and stability are presented, and the suitability of the designs for mic...

Many chemical processes exhibit strong nonlinear dynamic behaviours which may present significant challenges to process operation and control, including input and output multiplicities. Input multiplicity refers to the phenomenon where different inputs (control action) result in the same steady state process output, which is commonly encountered in biochemical reactors. A process with input mul...

In the present paper, nonlinear behavior of mass concrete simulated by smeared crack model is combined with Endurance Time Analysis (ETA) method for studying seismic response of arch dams. ETA is a time-history based dynamic pushover procedure in which special predesigned intensifying acceleration functions are used for analysis and estimation of structural responses in various performance leve...

Nonlinear dynamic analyses were performed to evaluate the effects of ground motion duration on response a pile-supported wharf subjected liquefaction-induced lateral deformations. The numerical model was first calibrated using recorded data from well-instrumented centrifuge test, after which incremental conducted suite spectrally matched motions with different durations. nonlinear evaluated thr...

Abstract Seismic vulnerability assessment of historical unreinforced masonry (URM) buildings is crucial for the authorities due to high susceptibility URM earthquakes. Open system earthquake engineering simulation (OpenSees) a well-known, powerful, and versatile seismic analysis platform. In lack free graphical user interface (GUI) buildings, Hyperomet was designed bridge gap between n...

In an earlier paper, we described a data structure, called support graph, for efficient incremental evaluation of tabled logic programs. The support graph records the dependencies between answers in the tables, and is crucial for efficiently propagating the changes to the tables when facts are deleted. Incremental computation with support graphs are hundreds of times faster than from-scratch ev...

Arch dams are generally built in cantilvever monoliths. Vertical contraction joints between monoliths control the stresses due to concrete shrinkage and temperature variations. Past studies in earthquake safety evaluation of the system often show the tensile fracture and local nonlinear deformation of joints. In this paper, some nonlinear joint element constitutive models are presented to exami...