This study develops an inventory model for determining an optimal ordering policy for non-deteriorating items and time-dependent holding cost with delayed payments permitted by the supplier under inflation and time-discounting. The discounted cash flows approach is applied to study the problem analysis. Mathematical models have been derived under two different situations i.e. case I: The permis...

A mathematical method for calculation of the minimum cross-sectional area of a thickener is presented by obtaining minimum laboratory batch settling test data, a function, which is called settling function, is derived. This function is found to be in the form of a polynomial of third order. The settling function and mass flux relation are used for the design of thickener. The method predict...

Proportional Integral Derivative (PID) controllers are widely used in industrial processes for their simplicity and robustness. The main application problems are the tuning of PID parameters to obtain good settling time, rise time and overshoot. The challenge is to improve the timing parameters to achieve optimal control performances. Remarkable findings are obtained through the use of Artifici...

Received Jan 17, 2017 Revised Mar 17, 2017 Accepted Apr 3, 2017 This paper deal with the problem in speed controller for Indirect Field Oriented Control of Induction Motor. The problem cause decrease performance of Induction Motor where it widely used in high-performance applications. In order decrease the fault of speed induction motor, TakagiSugeno type Fuzzy logic control is used as the spee...

The idea is to interconnect test items to reuse memory states left from the previous test item for saving initialization and verification sequences. Meanwhile, signal settling time of tester between two consecutive test items being applied can also be minimized since all test items are connected together into a continuous one. The interconnection problem is transformed to the Rural Chinese Post...

A low-voltage CMOS rail-to-rail OpAmp with high slew-rate and fast-settling is presented. The input stage is composed of the complementary differential pairs, a pair of modified current-mode maximum selecting circuits (Maximum Current Selecting Circuit 11) and a class-AB feedback loop circuit. It achieves rail-to-rail operation, constant-gm ,high slewrate and fast-settling. With this OpAmp topo...

The three-dimensional intrinsic convection in a monodisperse dispersion of spheres settling in a vertical container of arbitrary cross section is calculated using the simple model of point forces with excluded volume near the walls, proposed by Bruneau et al. @Phys. Fluids 8, 2236 ~1996!#. An exact solution of the model equations for a container with rectangular cross-section shows that corners...

For cleaning silicon wafers via the RCA clean, temperature control is important in order to obtain a stable performance, but it is difficult mainly because the RCA solutions expose nonlinear and timevarying exothermic chemical reactions. So far, the MSPC (model switching predictive controller) using the CAN2 (competitive associative net 2) has been developed and the effectiveness has been valid...

This paper accompanies a talk given at the Workshop on Mathematical Methods in Queueing Networks held at the Mathematical Sciences Institute at Cornell University in August 1988. In earlier work we had exhibited a threshold phenomenon in the transient behaviour of a closed network of . / M / 1 nodes: When there are N customers circulating, and the initial state is x, let d~(t ) denote the total...

The Implicit Lyapunov Function (ILF) method for finite-time stability analysis is introduced. The control algorithm for finite-time stabilization of a chain of integrators is developed. The scheme of control parameters selection is presented by a Linear Matrix Inequality (LMI). The robustness of the finite-time control algorithm with respect to system uncertainties and disturbances is studied. ...