We propose a path loss model with an over-roof propagation path between mobile terminals in residential areas. A double knife-edge diffraction model shows that over-roof propagation loss can be accurately estimated. Measurement results confirm the estimation accuracy of the new model.

In this paper, we consider a stochastic Time-Cost Tradeoff Problem (TCTP) in PERT networks for project management, in which all activities are subjected to a linear cost function and assumed to be exponentially distributed. The aim of this problem is to maximize the project completion probability with a pre-known deadline to a predefined probability such that the required additional cost is min...

Contour Crafting is an emerging technology that uses robotics to construct free form building structures by repeatedly laying down layers of material such as concrete. The Contour Crafting technology scales up automated additive fabrication from building small industrial parts to constructing buildings. Tool path planning and optimization for Contour Crafting benefit the technology by increasin...

data envelopment analysis (dea) is a method to measure relative efficiency of a set of decision-making units (dmus) which uses multiple inputs and produces multiple outputs. in the conventional dea, crisp inputs and outputs are fundamentally necessary. but the observed values of inputs and outputs in real-world problems are sometimes imprecise. thus, performance measurement often needs to be do...

We report on a delayed-choice quantum eraser experiment based on a two-photon imaging scheme using entangled photon pairs. After the detection of a photon which passed through a double-slit, a random delayed choice is made to erase or not erase the which-path information by the measurement of its distant entangled twin; the particle-like and wave-like behavior of the photon are then recorded si...

We study the application of the coherent-state path integral as a numerical tool for wave-packet propagation. The numerical evaluation of path integrals is reduced to a matrix-vector multiplication scheme. Together with a split-operator technique we apply our method to a time-dependent double-well potential.

Digital Audio Broadcasting (DAB) is an emerging technology which is currently experiencing rapid growth following the advent of ETS 300-401 DAB standard in Europe and the ATSC ATV standard in the U.S. Wide-band audio compression is performed by ISO-MPEG layer II for DAB, and by Dolby AC-3 for ATV. To achieve high quality audio, current DSP implementations for such compression algorithms typical...

The paper presents a novel view on the Structurally Synthesized BDDs (SSBDD) as a model with inherent double topology for compact modeling of single faults and efficient reasoning of multiple faults. The nodes of SSBDDs represent lower level signal path topology in the original circuit, and the paths of SSBDD represent higher level topology of conditions to be processed during fault reasoning. ...

We present the proof of the HRR theorem for a generic complex compact manifold by evaluating the functional integral for the Witten index of the appropriate supersymmetric quantum mechanical system.