In the current work, the properties of cement pastes doped with high amounts of ground granulated blast-furnace slag (HVS) were investigated. Portland cement (PC) was substituted with ground granulated blast-furnace slag (donated as slag) at very high amounts of 85%, 90%, 95% and 100%, by weight. PC paste without any content of slag was used as a reference. Some fresh and hardened properties su...

The addition of steel fiber to self-consolidating concrete (SCC) may considerably prolong cracking time and improve its deforming performance. Current studies mainly apply high content micro-steel fibers the mechanical performance SCC whilst assuring workability, however, there are still very few concerning influence a mixture with ordinary on SCC. Thus, this paper conducted experimental ordina...

We respond to Ron Weber’s commentaries regarding the necessity of a theoretical core in achieving academic legitimacy for the IS field. We examine the practical problems in identifying a theoretical core, clarify the ontological connection between identity and legitimacy, acknowledge mistakes in our earlier formulation criticizing the necessity of theory in legitimation, and attempt a synthesis...

Recently, the authors introduced two new second-order single-resistance-controlled oscillators (SRCO) employing four/three unity-gain cells (unity-gain voltage followers and unity-gain current followers). In this communication, a novel family of SRCOs has been presented which employ a reduced number of (only two) unity-gain cells as active elements. The workability of the new circuits has been ...

This paper presents an electronically controllable grounded capacitor quadrature oscillator using single multiple-output current controlled current differencing transconductance amplifier (MO-CCCDTA) as an active element. The proposed circuit employs a single MOCCCDTA, two grounded capacitors and one grounded resistor and offers the advantages of (i) independent control of condition of oscillat...

Tautology is interpreted as a necessary condition for the workability of an operations system. This condition suggests the following possibilities: the stable solvability of balance equations between available resources and requests for them; the calculation of potential and kinetic of the system together with the estimation of the contribution of every operation to the kinetic of the system; t...

Two floating inductance (FI) circuits are presented which employ a canonical number of passive components (namely, only two resistors and a capacitor) as well as canonical number of active elements (only two CFOAs) and realize single-resistance-tunable inductance value, without requiring any component-matching or cancellation constraints. The workability of the proposed circuits and their appli...

The main objective of this study is to evaluate the workability of fresh portland cement concrete while it is still in the mixing truck by determining fundamental rheological parameters (plastic viscosity and yield stress). Nine concrete mixtures with different values of yield stress and plastic viscosity were tested in a concrete truck. The measurements made with the truck were based on the ty...

This paper presents a new current-mode single input multi output (SIMO) type biquad employing one voltage differencing transconductance amplifier (VDTA), two grounded capacitors and a single grounded resistor. The configuration realizes all basic filter functions (i.e. Low Pass (LP), High Pass (HP), Band Pass (BP), Notch (BR) and All Pass (AP)). The natural frequency (ω0) and bandwidth (BW) are...

A new implementation of Chua’s chaotic circuit using current feedback operational amplifier (CFOAs) and giving high frequency oscillations is presented. Both the circuit topologies based on CFOA’S i.e. CFOA based nonlinear resistor and CFOA based synthetic inductor are used together The new circuit is operated at high frequencies in which the CFOAs have excellent performance. The workability of...