Sharia-based investment is an by the community to obtain profits in accordance with Islamic principles and law. This study aims calculate optimal portfolio return value using Single Index Model, risk VaR (Value at Risk), then implement it Matlab’s GUI (Graphical User Interface). The data used closing stock price on JII (Jakarta Index) 30 stocks for two consecutive years. Furthermore, these are ...

In this research contribution, the electronically tunable first-order universal filter employing a single voltage differencing differential input buffered amplifier (VD-DIBA) (constructed from two commercially available integrated circuit (IC): operational transconductance amplifier, IC number LT1228, and buffer, AD830), one capacitor resistors. The features of designed first order are as follo...

This work presents the quadrature sinusoidal oscillator using two Voltage Differencing-Differential Input Buffered Amplifiers (VD-DIBAs), resistors, and capacitors. The VD-DIBA is an electronically controllable active building block with high input low output impedances that can connect to other circuits directly without buffers. With these distinguished features, employed in this design. propo...