Formal extensions of the response spectrum method to include spatial seismic effects are reviewed. Two approaches are described in detail: the first based on random vibrations of a simple oscillator under two-component excitations, and the second analyzing multi-column building seismic response. The subjective choice of these two complementing approaches aims at analyzing the phenomenon of spat...

We study the sensitivity of seismic waves to changes in the fracture normal and tangential compliances by analyzing the fracture sensitivity wave equation, which is derived by differentiating the elastic wave equation with respect to the fracture compliance. The sources for the sensitivity wavefield are the sensitivity moments, which are functions of fracture compliance, background elastic prop...

DNA microarrays are well suited as a tool for analyzing functional gene diversity as well as community composition in aquatic environments. Microarrays allow for the semi-quantitative characterization of target genes by means of specific hybridization of labeled target gene sequences, amplified from the environment, to the corresponding oligonucleotide probes on the slide. Specificity and sensi...

We have been developing polarization-analyzing CMOS image sensor with monolithically embedded polarizer [1, 2]. Differing from preceding works [3-5], we implement on-chip polarizers configured with a metal wiring layer available in standard CMOS technology. In the last workshop, we have demonstrated the polarization-analyzing functionality with a CMOS image sensor fabricated with 0.35 μm standa...

Determining injector-producer relationships, i.e., to quantify the inter-well connectivity between injectors and producers in a reservoir, is a complex and non-stationary problem. In this paper, we present a neural-network-based sensitivity analysis approach to address this problem. To the best of our knowledge, sensitivity analysis has never been applied for identification of the injector-prod...

X oilfield is located in the Western Bohai Sea. During water injection development process, oil well productivity continued to decline. The effect of and increase poor. This time, by analyzing sensitivity reservoir, damage mode reservoir analyzed, reasons for poor are obtained, because strong sensitivity, medium stress corresponding measures suggestions put forward, such as greater than 4500 mg...

In this paper, we present a frequency jump detector for space clocks based on two steps: a time-varying configurable deterministic trend, and a filter on the noises to improve the sensitivity. We prove and discuss the validity of the method by analyzing numerical simulations representing typical GNSS clocks.

Numerical simulation analysis of fiber optic bending sensitivity aiming to improve fiber lasers design is developed, analyzing both the transition loss, associated with abrupt curvature change at the beginning and the end of a bend, and pure bending loss associated with the loss from the constant curvature bending in between.