We construct an example of two countable spaces X and Y such that the spaces C,‘(X) and CG (Y) are homeomorphic and the spaces C,(X) and C,(Y) are not homeomorphic. o 1998 Elsevier Science B.V.

The theoretical foundations of linear circuit theory rest on Maxwell’s theory of electromagnetism. In its more applied form, circuit theory rests on the key concepts of Kirchoff’s Laws, impedance, Ohm’s Law (in its most general sense by encompassing impedances), and the Principle of Superposition. From this foundation, any linear circuit can be solved: Given a specification of all sources in th...

As described in my previous paper [1], the voltage-source equivalent was first derived by Hermann von Helmholtz (1821–1894) in a 1853 paper [2]. Exactly thirty years later in 1883, Léon Charles Thévenin (1857–1926) published the same result [3, 4] apparently unaware of Helmholtz’s work. The generality of the equivalent source network was not appreciated until forty-three years later. Then, in 1...

This study presents a data-driven approach in conjunction with an adaptive extended Kalman filter (AEKF) to estimate lithium-ion batteries' state of charge (SOC) online. The Thevenin battery model is used evaluate the effects using voltage and current. advantages Lagrange multiplier method are utilized battery. continuously decreases error adjust gain AEKF for accurate SOC estimation. Various c...

The battery State of Charge (SoC) is critical information to overcome agricultural robots’ limitations related and energy management. Although several SoC estimation methods have been proposed in the literature, performance these has not validated for different chemistries mobile robot applications. Compared previous work, this paper evaluates limits using RC model Thevenin a Lithium Iron Phosp...

intercropping systems lead to reduce weeds population and their biomass. in order to study effect of marigold (calendula officinalis) and mungbean (vigna radiata) intercropping in different sowing times on yield and weeds control a factorial experiment based on randomized complete block design was performed in islamic azad university, tabriz branch, iran, during 2012 in three replications. stud...

a study on the evaluating equivalent damping and response modification factors of frames equipped by pall friction dampers is presented. to do so, buildings with various stories were considered. nonlinear and linear dynamic time history analysis has been performed to evaluate equivalent damping for pall friction dampers. ground motions with various frequency characteristics scaled with iranian ...

Abstract We examine the effects of postulated metric on measurement well-being, by comparing, in (income, lifetime) space, two indexes: equivalent income index and lifetime index. The conditions under which exists are more restrictive than ones exists, but it is possible to define an alternative index, based reference levels, for non-existence problem less acute. Those indexes also shown satisf...