Industrial Control Systems (ICS) provide management and control capabilities for mission-critical utilities such as the nuclear, power, water, transportation grids. Within ICS, Programmable Logic Controllers (PLCs) play a key role they serve convenient bridge between cyber physical worlds, e.g., controlling centrifuge machines in nuclear power plants. The critical roles that ICS PLCs have made them target of sophisticated cyberattacks are designed to disrupt their operation, which creates...

The study on the doping in perovskites and perovskite variants become a hot issue, which can provide feasible way for modulating electronic photoluminescence properties structural stability.

This paper presents an on-chip double-dipole antenna by applying micromachining techniques based on a standard SiGe BiCMOS process. It enables the fully integration of millimeter-wave transceiver and into single chip. A parametric study has been made in simulation which reveals influence key design parameters over radiation efficiency directivity. prototype fabricated measured to verify design. The peak gain is 8.4 dBi at 130 GHz with simulated 60 %. 3-dB bandwidth 122 – 140 GHz.

A 245 GHz transmitter (TX) with an integrated antenna for sensing applications has been realized, which consists of a push-push VCO 1/64 frequency divider, transformer-coupled one-stage power amplifier, doubler, and on-chip localized backside etching. The the TX is tunable by external PLL in range from 239.5 to 250.8 GHz. fabricated 0.13 μm SiGe:C BiCMOS technology f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> /f...

This paper describes a highly-integrated 122 GHz system-on-chip radar sensor in SiGe BiCMOS technology. The chip includes transceiver and two on-chip antennas utilizing novel antenna design approach that allows the use of localized backside etching technique without compromising mechanical stability chip. implemented double folded dipole achieves an gain 6 dBi with radiation efficiency 54%. is equipped 61 VCO complemented frequency doubler to generate transmit signal. receive path LNA, 90...

A 5th-order Chebyshev active-RC filter has been implemented in TSMC 0.13µ CMOS technology. With the feature of multi-mode, it 8 different bandwidth modes including 6 Real Low-pass and 2 Complex band-pass for wireless sensor network applications. Combined with a special kind Miller compensation method, OTA's stability is observably improved. Also, to eliminate effect temperature process variation, an automatic frequency tuning scheme applied. The measures 0 dB gain 0.9 ripple passband. It...

An on-board differential patch array antenna for 60 GHz applications was designed, fabricated and measured. The optimized including bond-wires which are used packaging. A gain of 9.4-12.4 dBi achieved in a broad frequency range 57-66 GHz. double bonding L-C-L structure applied order to improve the impedance matching between RFIC. coplanar waveguide (CPW) microstrip transmission line (MTL) transition designed measure interconnects on board. This has no vias so that fabrication process is...

We show that a transversely geometrically controlling boundary damping strip is sufficient but not necessary for <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="t Superscript negative 1 slash 2"> <mml:semantics> <mml:msup> <mml:mi>t</mml:mi> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>−<!-- − --></mml:mo> <mml:mn>1</mml:mn> <mml:mo>/</mml:mo> </mml:mrow> <mml:mn>2</mml:mn> </mml:msup> <mml:annotation...

We study the decay of global energy for damped Klein–Gordon equation on non-compact manifolds with finitely many cylindrical and subconic ends up to bounded perturbation. prove that under Geometric Control Condition, is exponential, weaker Network logarithmic, by developing Carleman estimate multiple weights.

Aiming to calculate the winding parasitic capacitance for high-frequency high-voltage application, this paper proposes an improved energy method by dividing electrostatic field into several regions. Analytical models of divided regions are established based on assumed electric distribution. The stored in specified covers not only between adjacent turns but also non-adjacent turns, and a compensation factor is introduced correct layer misalignment problem standard winding, which makes...

The dynamic response of floating horizontal axis wind turbines (FHWATs) are affected by the viscous and inertia effects. In free decay motion, drag reduces amplitude pitch roll fluctuation, quasi-static mooring system overestimates resonant values roll. this paper, is modified introducing linear damping quadratic damping. characteristics FHAWT model DTU 10 MW tension leg platform (TLP) were studied. Dynamic blade was mainly caused load, while wave increased short-term damage equivalent load....

Abstract The self-supplying vortex generator jet (SVGJ) is introduced to the separation control of a high-speed compressor cascade with an inlet Mach number 0.67. A parametric investigation concerning location and injection angle conducted numerically. effect mechanisms SVGJ on performance are analyzed in detail. potentials at off-design points also discussed. generated by utilizing pressure difference between surface suction could enhance fluid exchange boundary layer mainstream, thus...

This paper presents flow separation control conducted on a highly loaded compressor stator cascade using endwall synthetic jets. Numerical methods are employed and mechanisms of jets in improving the performance discussed detail. The influence several actuation parameters is also investigated. Results show that able to improve flows blade passage significantly, maximum loss reduction 21.63% pressure rise increment 5.60% obtained at design condition. Apart from energizing low momentum fluid...

Both the compressor performance and 3D flows inside stator passage are significantly impacted by hub gap. The interplay between leakage flow corner separation within a cantilevered of highly loaded, low-speed axial with succession gaps was examined numerically in this paper. Firstly, simulated results were compared measured results, including characteristics, structures, fields at outlet. revealed that used CFD solver, as well corresponding setup, can reproduce not only terms trend along...

A fully-integrated 400MHz transceiver for high definition video transmission in Unmanned aerial vehicle (UAV) is presented. The integrates a Receiver (RX), Transmitter (TX), tunable multi-mode complex filter, two sigma-delta fractional-N PLL frequency synthesizers and some baseband calibration circuits, which applicable both Time division duplex (TDD) Frequency (FDD) systems. In order to meet different data rate sensitivity requirements control signal transmission, the supports BPSK/QPSK/QAM...

In this paper, a 650 V 4H-SiC trench Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) with hetero-junction diode (HJD) and double current spreading layers (CSLs) is proposed studied based on Sentaurus TCAD simulation. The HJD suppresses the turn-on of parasitic body improves performance in third quadrant. CSLs different doping concentrations help to lower on-state resistance as well gate-drain capacitance. As result, decreased by 47.82% while breakdown voltage remains same turn-off...

This expository note, written for the proceedings of ICCM 2023, presents recent work [arXiv:2004.13894]. We particularly prove an Carleman estimate on conic manifolds, using a multiple-weight argument.

We prove that weakly elliptic damping gives sharp energy decay for the abstract damped wave semigroup, where is not in functional calculus. In this case, there no overdamping. show applications linearised water waves and Kelvin--Voigt damping.

The development of a general purpose service robot for daily life necessitates the robot's ability to deploy myriad fundamental behaviors judiciously. Recent advancements in training Large Language Models (LLMs) can be used generate action sequences directly, given an instruction natural language with no additional domain information. However, while outputs LLMs are semantically correct, generated task plans may not accurately map acceptable actions and might encompass various linguistic...

We study the decay of global energy for wave equation with Hölder continuous damping placed on C 1,1 -boundary compact and non-compact waveguides star-shaped cross-sections.We show there is sharp t -1/2 -decay when uniformly bounded from below cylindrical wall product cylinders where Geometric Control Condition violated.On non-product cylinders, we also that -1/3 wall.

Abstract We introduce the control conditions for 0th-order pseudodifferential operators $\textbf{P}$ whose real parts satisfy Morse–Smale dynamical condition. obtain microlocal estimates under conditions. As a result, we show that there are no singular profiles in solution to evolution equation $(i\partial _{t}-\textbf{P})u=f$ when has damping term satisfies condition and $f\in C^{\infty }$. This is motivated by study of model damped internal waves.

Visual place recognition (VPR) using deep networks has achieved state-of-the-art performance. However, most of them require a training set with ground truth sensor poses to obtain positive and negative samples each observation's spatial neighborhood for supervised learning. When such information is unavailable, temporal neighborhoods from sequentially collected data stream could be exploited self-supervised training, although we find its performance suboptimal. Inspired by noisy label...