Performance tuning in modern database systems requires a lot of expertise, is very time consuming and often misdirected. Tuning attempts often lack a methodology that has a holistic view of the database. The absence of historical diagnostic information to investigate performance issues at first occurrence exacerbates the whole tuning process often requiring that problems be reproduced before th...

The automotive electronic throttle (AET) control system has been widely applied in modern engines, and accurate of AET can improve engine performance as well reduce pollution emissions. However, the noise sensor circuit variation driving conditions seriously affect system, making controller designing challenging. This paper proposes a self-tuning backstepping with Kalman-like filter (SBCKLF) st...

In this paper, we propose the novel application of a technique for filter design that can accurately fit measured tuning curves for the auditory fibres in the log-magnitude domain. This method provides pole-zero filters with guaranteed stability, and its logmagnitude domain criterion allows tuning curves with very steep slopes to be accurately modelled with an 8 to 10 order polezero filter. Thu...

A 4-MHz, fifth-order elliptic low-pass Gm-C filter is described whose characteristics are tuned by an on-chip automatic tuning circuit. The tuning circuit uses only one integrator as the master of tuning instead of problematic voltage controlled oscillator (VCO) and voltage controlled filter (VCF). MOS transistors in linear operation region perform the voltage-tocurrent conversion in an operati...

Reliable estimates of supra-threshold (60-80 dB SPL) filter tuning are necessary to understand auditory processing of speech. However, existing approaches suffer from methodological limitations that require high suppressor tone levels (psychoacoustics) or an assumption of linearity (otoacoustic emission group delay) to estimate human auditory filter tuning at higher stimulus levels. We propose ...

This letter presents an eighth-order dual-mode waveguide filter, fabricated using the selective laser melting (SLM) technique. The filter employs four dimpled ellipsoid resonators, operating at fundamental TM101 mode. During printing, can be mechanically self-supported without any internal supports. Compared to filters employing tuning posts, proposed is less sensitive fabrication er...

Data assimilation plays a key role in large-scale atmospheric weather forecasting, where the state of the physical system is estimated from model outputs and observations, and is then used as initial condition to produce accurate future forecasts. The Ensemble Kalman Filter (EnKF) provides a practical implementation of the statistical solution of the data assimilation problem and has gained wid...

In this paper we discuss the design of a low-voltage (1.5V), continuous-time, biquadratic CMOS filter based on Dynamic Gate Biasing (DGB). We begin by discussing the filter’s structure and its tuning mechanism. The filter uses transconductanceC cells and implements low-pass, bandpass and highpass transfer functions. The transconductances are tuned using the gate voltages of MOSFETs operating in...

In this paper, a compact high-pass filter (HPF) with a sharp rejection response based on the balanced composite right-left handed (CRLH) transmission line (TL) concept is proposed. A series LC resonator using an interdigital capacitor and meander lines is designed. Also, a meander spiral complementary split ring resonator (MSCSRR) is used to realize the parallel LC resonator. The high-pass filt...

A two stage sub-µW Inverter-based switched-capacitor amplifier-filter is presented which is capable of amplifying both spikes and local field potentials (LFP) signals. Here we employ a switched capacitor technique for frequency tuning and reducing of 1/f noise of two stages. The reduction of power consumption is very necessary for neural recording devices however, in switched capacitor (SC) cir...