For a user who is unfamiliar with a target domain, the first step to conduct an exploratory search task is to go over a learning phrase, which means to learn from the search results to acquire basic domain knowledge. Since lots of search results could be returned by a search engine, and usually...

A mean flow acoustic engine based on the aerodynamic effects converts wind energy and fluid energy in pipelines into acoustic energy which can be used to drive thermoacoustic refrigerators and transducers without any mechanical moving parts. A mean flow acoustic engine with the resonator tube...

A thermoacoustic compressor is capable of converting an alternating gas flow to a direct one with a large pumping rate on the basis of the pressure oscillation nature of thermoacoustic engines and the flow rectification effect of check valves. Theoretical calculations are first carried out to...

This paper investigates the changing roles played by liquidity constraint and uncertainty in accounting for the dynamism of Chinese household consumption behaviour. Starting from the Euler equation-based model of Robert Hall, a framework encompassing an array of consumption models is developed...

Based on the analogy between electricity and heat, we find that electric transformers and heat exchangers have many similarities. However, unlike transformers where Vo can be higher than Vi, the outlet temperatures of conventional heat exchangers are limited (i.e. Tc,o<Th,i, Th,o>Tc,i). Therefore, the...</th,i,>

Based on the classic augmented Lagrangian multiplier method, we propose, analyze and test an algorithm for solving a class of equality-constrained non-smooth optimization problems (chiefly but not necessarily convex programs) with a particular structure. The algorithm effectively combines an...

To reveal the inner mechanism of gas explosion dynamic behavior affected by gas equivalent concentration, a high speed Schlieren image system and flow field measurement technology was applied to record the gas explosion flame propagation and flame structure transition. The results show that a...