In the recent years, Phasor Measurement Unit (PMU) based Wide Area System (WAMS) has been receiving ever increasing attention from academia as well industry. Power utilities have designing and implementing WAMS to provide more intelligent monitoring, control, protection of power grid. order achieve real-time operations in modern systems, construction an economic efficient communication infrastructure is a necessity, various laying fiber optical network along their transmission distribution...

Cu is widely used in the back contact formation of CdTe thin film solar cells. However, easily to diffuse from into absorber layer and even cell junction interface CdS/CdTe. This phenomenon generally believed be main factor affecting stability. In this study was intentionally doped CdS its effect on microstructural, optical electrical properties material. Upon doping, VCd− surface-state-related photoluminescence emissions were dramatically decreased/quenched. The presence atom hindered...

CdTe preferential growth with through-thickness grains has been achieved. A crystalline mechanism assisted by an oxide liquid phase is proposed.

A method for simultaneous measurement of static strain and dynamic vibration with high spatial resolution based on millimeter sized ultra-short fiber Bragg grating (FBG) is proposed experimented in this paper. Dual-parameter can be measured the single unit cascaded FBGs, which interrogate optical coherence tomography by a designed wavelength swept light source. In experiments, sensing units were precisely located mm degrees inverse FFT coherent signals phase difference calculation. And also...

In this paper, we describe our global event-driven co-simulation framework GECO that developed to co-simulate power systems dynamics with data network activities. The utilizes event scheduling across two different simulators distinct simulation disciplines - eliminate common synchronization errors often found in federated platforms. We also illustrate the use of on PMU-based WAMS applications: cyber-attacks impacts analysis all-PMU state estimation, and out-of-step protection. experimental...

An optical fiber sensing scheme that can detect the incipient slip is proposed and experimented. Based on biological principle of slipping which accompanied by tactile force vibration simultaneously, we design build an ultra-short FBG perception system under structure wavelength-swept coherence tomography, could sense static-dynamic information at time. In time domain, static measurement completed wavelength signal envelope demodulation from mechanism. Meanwhile in frequency dynamic wavelet...

The monoprotonated bipyridinium cation can complex with dibenzo-24-crown-8 by means of ion-dipole and charge-transfer interactions. They both thread to form a [2]pseudorotaxane-like for further intercomplex association produce pseudopolyrotaxane arrays through N + –H···N hydrogen bonding in the solid state.

A centimeter-sized bearing fault probe based on dual-fiber Bragg grating vibration sensing is proposed. The can provide multi-carrier heterodyne measurements swept source optical coherence tomography technology and the synchrosqueezed wavelet transform method to obtain a wider frequency response range collect more accurate data. For sequential characteristics of signals, we propose convolutional neural network with long short-term memory transformer encoder. This proven in classification...

This paper proposes and examines a type of miniaturized universal system architecture for radar signal processing platforms. can satisfy the urgent demands both on high-performance computing, parallelizable processing, scalability, ability to reconfigure in today's systems, strict limitations volume, weight, power consumption, physical shapes airborne or missile-borne Synthetic Aperture Radar (SAR) real time imaging systems. Based new architecture, numerous characteristics hardware were...

The economic machinery of the United States is reliant on complex large-scale cyber-physical systems which include electric power grids, oil and gas systems, transportation etc. Protection these their control from security threats improvement robustness resilience are important goals. Since all have Supervisory Control Data Acquisition (SCADA) in centers, a number test beds been developed at various laboratories. Usually such beds, people trained to operate protect critical systems. In this...

A novel image fusion method based on region gradient and SWT is proposed to improve the visual effect of fused image. The source images are first decomposed into low frequency high parts. Low parts using rule larger gradient, absolute value adopted as for final obtained by inverse SWT. experimental results show that regional methods can better maintain background details visible light target feature information infrared Besides, it objective indexes such mean, standard deviation, entropy...

In the title compound, C9H21N2+·Cl−·H2O, piperidine ring adopts a chair conformation. crystal structure, components are linked by N—H⋯N, O—H⋯Cl, N—H⋯Cl and N—H⋯O hydrogen bonds. There two independent chloride ions, both on crystallographic twofold rotation axes.

In the crystal structure of title compound, C8H10Cl2N4, π–π stacking inter­actions are observed between triazine rings. These link mol­ecules into a dimer, packing along axis. The piperidine ring adopts chair conformation.

C62H64C112I2O4P4, triclinic, PI (no.1), a = 10.0989(2)Ä, b 12.8084(1) Ä, c 12.8423(2) 65.074(l)o ) β 84.31°,γ 87.854(1)°,V= 1499.0Ä 3 , Ζ 1, R & (F) 0.036, wRreffF 2 0.098, Τ 293 Κ. Source of materialThe title compound was synthesized following published procedure for the silver(I) analogs [1].To solution optically pure DIOP (50.0 mg, 0.10 mmol; (4fl,5Ä)-irans-4,5-bis[(diphenylphosphino)methyl]-2,2-dimethyl-l,3-dioxalane) in CH2CI2 (5 mL) added an excess Cul (40.0 0.21 mmol).After refluxing...

Several derivatives of N,N-bis(3,5-di-tert-butyl-4-hydroxybenzyl)- N-alkylamines were isolated in the reduction imines obtained from 3,5-di-tert-butyl-4-hydroxylbenzaldehyde and primary amines. Experimental results showed that they transformed corresponding 2,6-di-tert-butyl-4-alkylaminomethylphenols.

In the title compound, C11H16O5, inter­molecular O—H⋯O hydrogen bonds are observed which help to establish crystal packing.

The title compound, C14H12ClN, has a tricyclic fused-ring system composed of benzene ring, pyridine ring and central nonplanar seven-membered ring.

Multi-interconnect systems (MIS) have become highly popular in high-performance and high-density electrical design. However, the ever-increasing clock speed ever-complicated interconnections make signal integrity (SI) a critical design issue most situations several iterations are required to achieve optimal SI performance. For MIS with one driver N receivers, this paper proposes frequency-domain multi-port transfer function (MPTF) investigate root cause of problems, offers practicable...

The research shows that the proper acceleration（RMS）of collecting dust from plate under impaction is about 50g. At present electrostatic precipitator’s machine basically designed by gradual experiences, experiments and revises. With heavy workload, this way more complex cost much because of large structure ESP. This paper studies response Electrostatic Precipitator’s Plate with finite element method, using dynamic analysis to accomplish design device acceleration distributing on impact,...

The title compound, C(9)H(20)NO(+)·C(2)F(3)O(2) (-), is an important inter-mediate in the synthesis of hindered light stabilizers. piperidinium ring adopts a chair conformation with hydroxyl group equatorial position. crystal packing stabilized by O-H⋯O and N-H⋯O hydrogen bonds. CF(3) disordered over two positions almost equal site occupancy factors.

The complete mol-ecule of the title compound, C(11)H(14)N(2)O, is generated by crystallographic twofold symmetry, with C=O group lying on rotation axis. In crystal structure, weak C-H⋯N inter-actions form zigzag chains mol-ecules.

Anions and cations of the title compound, C9H20NO+·NO3−, are located on crystallographic mirror planes. The six-membered ring adopts a chair conformation with hydroxyl group in an equatorial position. Inter­molecular hydrogen bonds connect anions cations.

The title compound, C15H20O4, also known as dihydro­helenalin, is a drug obtained from Chinese plant. It contains seven-membered ring in chair conformation and two five-membered rings twist conformations. crystal packing involves O—H⋯O hydrogen bonds.