Tracking Multiphase Flows through Steep Reservoirs with External Constraint

Problem statement: The study offers theoretical formulations for high-viscosity particulate flows in inclined reservoirs, taking into account the presence of homogeneous spheroidal particles of various types to produce discrete two-phase suspensions. Purpose: The primary objective of this analytical and comparative study is to identify the most...

BSc Optics

This book treats optics at the level of students in the later stage of their bachelor or the beginning of their master. It is assumed that the student is familiar with Maxwell’s equations. Although the book takes account of the fact that optics is part of electromagnetism, special emphasis is put on the usefulness of approximate models of optics...

Light, the universe and everything–12 Herculean tasks for quantum cowboys and black diamond skiers

The Winter Colloquium on the Physics of Quantum Electronics (PQE) has been a seminal force in quantum optics and related areas since 1971. It is rather mind-boggling to recognize how the concepts presented at these conferences have transformed scientific understanding and human society. In January 2017, the participants of PQE were asked to...

A generalized coherence framework for detecting and characterizing nonlinear interactions in the nervous system

Objective: This paper introduces a generalized coherence framework for detecting and characterizing nonlinear interactions in the nervous system, namely cross-spectral coherence (CSC). CSC can detect different types of nonlinear interactions including harmonic and intermodulation coupling as present in static nonlinearities and also subharmonic...

The Half-Josephson Laser: Essentials and Applications

In this dissertation, we study a novel class of laser devices, referred to as half-Josephson lasers (HJL). Here, lasing at half the Josephson frequency is induced by a parametric instability, resulting from an oscillating supercurrent flowing through a Josephson junction that contains quantum emitters. The device combines the electronic...

Effect of noise in blending and deblending

If simultaneous shooting is carried out by incoherent source arrays, being the condition of blended acquisition, the deblending process generates shot records with a very low residual interference (blending noise). We found, theoretically and numerically, that deblended shot records had a better background-related signal-to-noise ratio than shot...

Cognitive radio: Aligning the regulatory environment with the technology, a business case perspective

This paper proposes to use the perspective of the business case to deal with the alignment between the introduction of new technology and the regulatory environment. Although this perspective can be used more generally this paper deals with this perspective in the context of the alignment between the introduction of Cognitive Radio technology...

Keeping an eye on reliability: The organizational requirements of future renewable energy systems

The reliable operation of energy infrastructures is more than just a technical matter. It is also dependent upon the organizational structure that enables and constrains entities in their management of operations. Yet this lesson seems forgotten in our planning of future renewable energy systems. There, focus is on technical development, market...

Coherence converting plasmonic hole arrays

Simulations are presented that demonstrate that the global state of spatial coherence of an optical wavefield can be altered on transmission through an array of subwavelength-sized holes in a metal plate that supports surface plasmons. It is found that the state of coherence of the emergent field strongly depends on the separation between the...

Multichannel Room Impulse Response Generation With Coherence Control

A method is proposed by which an arbitrary number of room impulse responses (RIRs) is generated from one input RIR. The method works by convolving the input RIR with a multitude of filters, one for each desired output RIR. The filters are designed in such a way that the coherence between all possible pairs of output RIRs feature assignable...

Resolution of coherent and incoherent imaging systems reconsidered: Classical criteria and a statistical alternative

The resolution of coherent and incoherent imaging systems is usually evaluated in terms of classical resolution criteria, such as Rayleigh’s. Based on these criteria, incoherent imaging is generally concluded to be ‘better’ than coherent imaging. However, this paper reveals some misconceptions in the application of the classical criteria, which...

Dynamics of gas-solids fluidized beds: Analysis of pressure fluctuations

Poor motor function is associated with reduced sensory processing after stroke

Abstract The possibility to regain motor function after stroke depends on the intactness of motor and sensory pathways. In this study, we evaluated afferent sensory pathway information transfer and processing after stroke with the coherence between cortical activity and a position perturbation (position-cortical coherence, PCC). Eleven subacute...