A zero-drift amplifier, as the name suggests, is an amplifier with offset voltage drift very close to zero. It uses auto-zero or chopping technology, or a combination of both, to continuously self-correct for DC errors over time and temperature. This enables the amplifier to achieve microvolt-level offsets and extremely low offset drifts. Therefore, it is uniquely suited to be used in signal co...

I introduce a partial differential equation to describe the process of prestack reflection data transformation in the offset, midpoint, and time coordinates. The equation is proved theoretically to provide correct kinematics and amplitudes on the transformed constant-offset sections. Solving an initial-value problem with the proposed equation leads to integral and frequency-domain offset contin...

I introduce a partial differential equation to describe the process of prestack reflection data transformation in the offset, midpoint, and time coordinates. The equation is proved theoretically to provide correct kinematics and amplitudes on the transformed constant-offset sections. Solving an initial-value problem with the proposed equation leads to integral and frequency-domain offset contin...

optimization is an important methodology for activities in planning and design. the transportation designers are able to introduce better projects when they can save time and cost of travel for project by optimization methods. most of the optimization problems in engineering are more complicated than they can be solved by custom optimization methods. the most common and available methods are he...

Respiratory resistance (Rrs) and elastance (Ers) are commonly measured in artificially-ventilated patients or animals by multiple linear regression of airway opening pressure (Pao) versus flow (V') and volume (V), according to the first order model: Pao = P0 + Ers.V + Rrs.V', where P0 is the static recoil pressure at end-expiration. An alternative way to obtain Rrs and Ers is to derive them fro...

Suggested citation for this article: Wilcox LS. A long way to travel. Prev Chronic Dis [serial online] 2005 Oct [date cited]. The travel experiences of one Lemuel Gulliver were first published in 1726 (1). Captain Gulliver, an ordinary, middle class Englishman, has a series of remarkable adventures , beginning with his trip to the island of Lilliput. Gulliver awakes on the island after survivin...

Zero-knowledge proofs of compaiaiional power have been proposed by Yung and others. In this paper, we propose an ef ic ieni (direct) and consiani round (five round) construction of zero knowledge proofs of computational power. To formulate the classes that can be applied to these efficient protocols, we introduce a class of invulnerable problems, FewPR and FewPRu. We show that any invulnerable ...