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Sensitivity-based Vulnerability Assessment of State estimation

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journal of Modern Power Systems and Clean energy 2021年第4期9卷 886-896页

作者： Gonzalo e.Constante-Flores Antonio j.Conejo jiankang Wang Department of electrical and Computer engineering The Ohio State UniversityColumbusUSA Department of Integrated Systems engineering and the Department of electrical and Computer engineering The Ohio State UniversityColumbusUSA

We propose a technique to assess the vulnerability of the power system state estimation. We aim at identifying the measurements that have a high potential of being the target of false data injection attacks. From the perspective of the adversary, such measurements have the following characteristics: ① being influential on the variable estimates;② corrupting their measured values is likely to be undetected. Additionally, such characteristics should not change significantly with the system operation condition. The proposed technique provides a systematic way of identifying the measurements with such characteristics. We illustrate our methodology on a 4-bus system, the New england 39-bus system, and the Ieee 118-bus test system, respectively.

关键词： False data injection attack state estimation sensitivity analysis singular value decomposition

Semileptonic bc to cc and bb to bc baryon decays and heavy quark spin symmetry

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Chinese Physics C 2010年第9期34卷 1364-1367页

作者： j.Nieves j.M.Flynn e.Hernández Instituto de Física corpuscular (IFIC) Centro Mixto Universidad de Valencia-CSICInstitutos de Investigación de Paterna School of Physics and Astronomy University of Southampton Departamento de Física Fundamental e IUFFyM Universidad de Salamanca

We study the semileptonic decays of the lowest-lying bc baryons to the lowest-lying cc baryons （Ξ （＊） bc → Ξ （＊） cc and Ω （＊） bc → Ω （＊） cc ）,in the limit m b,m c Λ QCD and close to the zero recoil *** separate heavy quark spin symmetries make it possible to describe all these decays using a single form *** also show how these constraints can be used to test the validity of different quark model *** to bc baryon decays are also discussed.

关键词： heavy quark spin symmetry semileptonic decays constituent quark modelsIf

Laser ablation and structuring of CdZnTe with femtosecond laser pulses

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journal of Materials Science & Technology 2020年第13期47卷 180-185页

作者： j.j.j.Nivas e.Allahyari A.Vecchione Q.Hao S.Amoruso X.Wang Dipartimento di Fisica“ettore Pancini” Universitàdi Napoli“Federico II”Via CintiaI-80126 NapoliItaly CNR-SPIN UOS NapoliVia CintiaI-80126 NapoliItaly CNR-SPIN UOS SalernoVia Giovanni Paolo II132I-84084 Fisciano(SA)Italy North China Research Institute of electro-Optics Beijing 100015China School of Remote Sensing and Information engineering Wuhan UniversityWuhan 430072China

We report an experimental investigation on laser ablation and associated surface structuring of CdZnTe by femtosecond Ti:Sa laser pulses(laser wavelengthλ≈800 nm,≈35 fs,10 Hz),in *** exploiting different static irradiation conditions,the fluence threshold and the incubation effect in CdZnTe are ***,surface treatment with a low laser fluence(laser pulse energy e≈5-10_μj)and number of shots(5e formation of well-defined cracks in the central part of the shallow crater,which is likely associated to a different thermal expansion coefficients of Te inclusions and matrix during the sample heating and cooling processes ensuing femtosecond laser *** with a larger number of pulses(N≈500,1000)with higher pulse energies(e≈30-50μj)results in the formation of welldefined laser-induced periodic surface structures(LIPSS)in the outskirts of the main crater,where the local fluence is well below the material ablation *** low spatial frequency and high spatial frequency LIPSS perpendicular to the laser polarization are found together and separately depending on the irradiation *** are ascribed to a process of progressive aggregation of randomly distributed nanoparticles produced during laser ablation of the deep crater in the region of the target irradiated by a fluence below the ablation threshold with many laser pulses.

关键词： Laser ablation Femtosecond laser surface processing CdZnTe Laser induced periodic surface structures Laser processing

STRATIFICATION BY SOLID PARTICLe SUSPeNSIONS

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Science China Mathematics 1989年第11期32卷 1325-1332页

作者：鄂学全 e.j.HOPFINGeR Institute of Mechanics Academia Sinica Beijing 100080 PRC Institut

Turbulence was generated by an oscillating grid above a bed of sediment of spherical glass beads. As expected, part of the sediment was lifted up by the grid action and a suspension layer of depth D formed above the grid. This depth was found remaining independent of grid action but varying with the sediment layer depth when the grid action was kept constant. Volume concentration measurements show the existence of only weak concentration gradients over the layer depth with a rapid fall off in concentration at the outer edge. The theoretical analysis based on a concentration flux model is in good qualitative agreement with observations.

关键词： turbulence sediments stratification.

Characterization of particle deposition during crossflow filtration as influenced by permeate flux and crossflow velocity using a microfluidic filtration system

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Frontiers of Chemical Science and engineering 2021年第3期15卷 552-561页

作者： Hongzhan Di Gregory j.O.Martin Dave e.Dunstan Department of Chemical and Biomolecular engineering University of MelbourneParkvilleVictoria 3010Australia

Particle deposition during crossflow filtration is significantly influenced by the operating conditions,in particular the permeate flux and crossflow ***,there is a lack of detailed knowledge about how deposit layer structures and distributions depend on operating *** study uses a microfluidic visualisation filtration system to examine the influence of operating conditions on the deposition process during crossflow ultrafiltration from a microscopic *** the permeate flux caused an increasing amount of deposition and a thicker deposit *** crossflow velocities reduced the extent of *** degree of deposition varied over a range of operating conditions due to the altered hydrodynamic forces exerted on the particles,which can be examined by the deposition probability according to an existing *** on this,an empirical correlation between the deposition probability and volume of deposition as a function of filtration time was developed,which gave good agreement with experimental *** effect of solution conditions was also involved in this correlation as a interaction *** could be useful for predicting the dynamic deposition process during crossflow filtration over a range of operating and solution conditions.

关键词： particle deposition crossflow filtration microfluidics confocal microscopy

Sediment Pollution Assessment of Abandoned Residential Developments Using Remote Sensing and GIS

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Pedosphere 2013年第1期23卷 39-47页

作者： j.D.WeRTS e.A.MIKHAILOVA C.j.POST j.L.SHARP Department of Forestry and Natural Resources Clemson University 261 Lehotsky HallClemson SC 29634 (USA) Department of Mathematical Sciences Clemson University 234 Barre HallClemson SC 29634 (USA)

The current economic crisis has left numerous residential developments in the southeastern United States in various stages of construction. Many of them are currently graded and essentially abandoned, creating a major source of sediment runoff to waterways. Residential development locations with significant bare soil areas were identified through classification of Landsat 5 TM satellite imagery and subsequently verified from high-resolution county aerial photographs. The revised universal soil loss equation (RUSLe) was used in a geographic information system (GIS) as a tool for prioritizing identified locations on the basis of potential soil loss assuming the worst case scenario of a completely unmaintained site. Initial GIS identification indicated 301 sites with a total bare soil area of 2 378 ha over three counties in Upstate South Carolina. A random sample of 153 sites was visited over 17 days and assessed using a mobile GIS, global positioning system (GPS), and digital camera for field validation. Results indicated that 78% (119) of the sites were classified correctly (residential construction sites in varying stages of completion); 88% of identified areas were less than 25% built compared to the previous year; 48% were categorized as moderate to severe problems. Abandoned and unfinished developments in Upstate South Carolina may represent a major source of sediment pollution to streams. Well-maintained erosion control devices may be useful in preventing offsite sedimentation.

关键词： classification construction erosion RUSLe soil loss

Metastable noble gas atoms in strong-field ionization experiments

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High Power Laser Science and engineering 2016年第3期4卷 74-100页

作者： j.e.Calvert A.j.Palmer I.V.Litvinyuk R.T.Sang Australian Attosecond Science Facility Center for Quantum Dynamics School of Natural Sciences Griffith University

The interactions of strong-field few-cycle laser pulses with metastable states of noble gas atoms are examined. Metastable noble gas atoms offer a combination of low ionization potential and a relatively simple atomic structure, making them excellent targets for examining ionization dynamics in varying experimental conditions. A review of the current work performed on metastable noble gas atoms is presented.

关键词： COLTRIMS electron holography high power lasers ionization regime metastable atoms spin polarized targets

An Application of Prony’s Sum of exponentials Method to Pharmacokinetic Data Analysis

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Communications in Computational Physics 2007年第1期2卷 87-98页

作者： j.Fuite R.e.Marsh j.A.Tuszynski Department of Physics University of AlbertaEdmontonAlbertaT6G 2J1Canada.

We discuss the basic concept of compartmental modelling in pharmacokinetics and demonstrate that all the solutions admitted by multi-compartment models of classical pharmacokinetics are expressed as linear combinations of exponential functions of *** lends itself to data analysis that depends on fitting exponential functions to finite size sets.A mathematical method developed a long time ago to deal with this type of problem is called Prony’s *** discuss the usefulness of this method in pharmacokinetic modeling and apply it to a particular data set obtained for the drug *** spite of the method’s power in dealing with well-behaved data sets,we indicate the existence of severe limitations since real concentration curves coming from pharmacokinetic data are seldom purely exponential.

关键词： Data analysis pharmacokinetics modelling Prony’s method.

Prediction of protein and amino acid composition and digestibility in individual feedstuffs and mixed diets for pigs using near-infrared spectroscopy

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Animal Nutrition 2021年第4期7卷 1242-1252页

作者： Samantha j.Noel Henry j.Høgh jørgensen Knud e.Bach Knudsen Department of Animal Science AU FoulumAarhus UniversityDK 8830TjeleDenmark

Knowledge of the amounts and digestibility of amino acids in pig feedstuffs is essential for calculating the appropriate inclusion level in a complete *** chemical analysis and in vivo digestibility trials are time-consuming and costly and cannot be used for routine ***-infrared spectroscopy(NIRS)offers a rapid,cost effective and environmentally friendly method for evaluating *** models were developed using NIRS to predict the content of crude protein and 18 amino acids from a wide range of feedstuffs used in pig production(n=607).The samples ranged from single feed ingredients(containing amino acids from 0.3 to 129.8 g/kg of dry matter)to feed mixtures(containing amino acids from 1.2 to 53.2 g/kg of dry matter).The predictive ability of the calibrations was tested with an independent dataset(n=150)and with ***,we compare these calibrations with calibrations developed on more narrowly defined groups of samples and with predictions from regression analysis of crude *** models were able to predict the concentrations of crude protein and 18 amino acids with good levels of precision and high coefficients of determination for calibration(RSQ^(CAL))from 0.91 to 0.99 and validation(RSQ^(VAL))from 0.87 to *** models were able to predict all amino acids except tryptophan and valine with greater accuracy than those from protein *** also developed calibration models to predict the apparent ileal and total tract digestibility of protein and amino *** the exception of tryptophan,RSQ values(>0.7)and standard error of cross validation(SeCV)values(ere obtained for the digestibility of most of the amino *** conclusion,NIRS can be used to predict crude protein and amino acid concentrations from a wide range of single ingredients and feed mixtures used for pig diets without separate models for each *** digestibility of protein and amino acids can be predicted with an

关键词： Near-infrared spectroscopy Amino acids Protein Apparent ileal digestibility Total tract digestibility Swine