In this paper, we present a new global-search method for designing QMF (quadrature-mirrorlter) lter banks. We formulate the design problem as a nonlinear constrained optimization problem, using the reconstruction error as the objective, and the other performance metrics as constraints. This formulation allows us to search for designs that improve over the best existing designs. Due to the nonli...

This paper proposes a method called Jump method for optimization of optical thin films. The method is the combination of local search strategy using modified Coordinate-Wise Algorithm and global search strategy using modified Evolutionary Algorithm. Jump method can evolve the designs of optical thin films for good performances. The design of a dielectric beam splitter and an edge filter as exam...

The Internet has made consumer search much easier with consequences for competition, industry structure and product o¤erings. We explore these consequences in a rich but tractable model that allows for strategic design choices. We …nd a polarized market structure, where some …rms choose designs aiming for broad-based audiences, while others target narrow niches. Such an industry structure can a...

Standard factorial designs may sometimes be inadequate for experiments that aim to estimate a generalized linear model, for example, for describing a binary response in terms of several variables. A method is proposed for finding exact designs for such experiments which uses a criterion that allows for uncertainty in the link function, the linear predictor or the model parameters, together with...

While large aperture telescopes are highly desirable for their enormous light grasp, smaller telescopes are increasingly pressed into service as wide-field survey instruments to aid in the search for near earth objects, satellites and space debris. Various optical designs are found throughout the technical literature but not all represent truly capable wide-field survey instruments and the sear...

This is a nine month progress report detailing my research into supporting users in their search for information, where the questions, results or even their environment requires functionality beyond the scope of keyword search alone. While keyword search environments, such as Google, have become the familiar standard for search on the web, research has shown that users, who may not know which k...

Extracting data paths in large-scale registertransfer level designs has important usage in automatic verification of synchronous circuits and synthesis of asynchronous circuits. Current tools rely on users to provide the data/control partition or use state-space analyses to extract data paths. Due to the explosion of state-space, the latter method can be used in only small designs. To resolve t...

While large aperture telescopes are highly desirable for their enormous light grasp, smaller telescopes are increasingly pressed into service as wide-field survey instruments to aid in the search for near earth objects, satellites and space debris. Various optical designs are found throughout the technical literature but not all represent truly capable wide-field survey instruments and the sear...

Plants can have positive effects on each other in numerous ways, including protection from harsh environmental conditions. This phenomenon, known as facilitation, occurs in water-stressed environments when shade from larger shrubs protects smaller annuals from harsh sun, enabling them to exist on scarce water. The topic of this paper is a model of this phenomenon that allows search algorithms t...

Sponsored search is a rapidly growing business and there is tremendous industry and research interest in improving the designs and functioning of the sponsored search marketplace. Launching new designs and enhanced features for the sponsored search marketplace requires careful evaluation of their potential consequences to user experience and financial impact on the multiple parties (advertisers...