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CSEE Journal of Power and Energy Systems 2024年第1期10卷 151-161页

作者： h.iting Sh.n Luliang Zh.ng Q.h.Wu Mengsh. Li Sch.ol of Electric Power Engineering South China University of Technology(SCUT)Guangzhou 510641China

Sparse measurements ch.llenge fault location in distribution *** paper proposes a meth.d for asymmetric ground fault location in distribution networks with.limited measurements.A virtual injected current vector is formulated to estimate th. fault line,wh.ch.can be reconstructed from voltage sags measured at a few buses using compressive sensing(CS).Th. relationsh.p between th. virtual injected current ratio(VICR)and fault position is deduced from circuit analysis to pinpoint th. ***,a two-stage recovery strategy is proposed for improving reconstruction accuracy of th. current vector,wh.re two different sensing matrixes are utilized to improve th. *** proposed meth.d is validated in IEEE 34 node test *** results sh.w asymmetric ground fault type,resistance,fault position and access of distributed generators(DGs)do not significantly influence performance of our *** addition,it works effectively under various scenarios of noisy measurement and line parameter *** on 134 node test feeders prove th. proposed meth.d is also suitable for systems with.more complex structure.

关键词： Distribution networks fault location reconstruction accuracy two-stage recovery virtual injected current ratio

Tau in th. pancreas:understanding th. link between type 2 diabetes mellitus and Alzh.imer's disease

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Signal Transduction and Targeted Th.rapy 2024年第1期9卷 6-7页

作者： Wenlu Li Steffen Tiedt Eng h.Lo Neuroprotection Research.Laboratories Departments of Radiology and NeurologyMassachusetts General HospitalHarvard Medical SchoolCharlestownMA02129USA Consortium International pour la Rech.rch. Circadienne sur l’AVC(CIRCA) BostonUSA Institute for Stroke and Dementia Research LMU University HospitalLMU MunichMunichGermany

A recent study publish.d in Molecular Psych.atry proposes a cellular mech.nism th.t may contribute to decreased insulin production in individuals with.type 2 diabetes mellitus(T2DM).1 Using a combination of cell culture experiments,animal models and studies in T2DM patients,th. auth.rs sh.w th.t an up-regulation of tau inβ-islet cells can inh.bit pancreatic insulin secretion th.ough.ch.nges in microtubule assembly.

关键词： T2DM Alzh.imer tau

Th. multi-impurity system in CdSe nanoplatelets:electronic structure and th.rmodynamic properties

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Communications in Th.oretical Ph.sics 2024年第3期76卷 165-173页

作者： D A Bagh.asaryan V A h.rutynyan E M Kazaryan h.A Sarkisyan Russian-Armenian University H Emin 1230051YerevanArmenia Institute of Applied Problems of Ph.sics 25 Nersisyan St0014YerevanArmenia

Th.s paper th.oretically studies th. impurity states and th. effects of impurity concentration and configuration on th. optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An image ch.rge-based model of electron-impurity interaction is *** ch.rge-carrier energy spectra and corresponding wave functions depending on th. impurity number and configuration are *** electron binding energies are calculated for different NPL *** is sh.wn th.t th. image ch.rge-based interaction potential th.t arises due to th. dielectric constants mismatch.is much.stronger th.n th. interaction potential th.t does not take such.a mismatch.into ***,it is demonstrated th.t th. binding energies are increasing with.th. number of *** calculate th. canonical partition function using th. energy levels of th. electron,wh.ch.in turn is used to obtain th. mean energy,h.at capacity,and entropy of th. non-interacting electron *** th.rmodynamic properties of th. non-interacting electron gas th.t depend on th. geometric parameters of th. NPL,impurity number,configuration,and temperature are studied.

关键词： nanoplateletes th.rmodynamic properties impurity states

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Parkland trees on smallh.lder farms ameliorate soil ph.sical-ch.mical properties in th. semi-arid area of Tigray,Eth.opia

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Journal of Arid Land 2024年第1期16卷 1-13页

作者： Selam LJALEM Emiru BIRh.NE Kassa TEKA Daniel h.BERh. Department of Land Resources Management and Environmental Protection College of Dryland Agriculture and Natural ResourcesMekelle UniversityMekelle 231Ethiopia Institute of Climate and Society Mekelle UniversityMekelle 231Ethiopia Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life Sciences(NMBU)Ås 1432Norway Department of Natural Resources Management Adigrat UniversityAdigrat 50Ethiopia

Proposed agroforestry options sh.uld begin with.th. species th.t farmers are most familiar with.wh.ch.would be th. native multipurpose trees th.t h.ve evolved under smallh.lder farms and socioeconomic *** African birch.Anogeissus leiocarpa(DC.)Guill.&Perr.)and pink jacaranda(Stereospermum kunth.anum Ch.m.)trees are th. dominant species in th. agroforestry parkland system in th. drylands of Tigray,*** farmers h.gh.y value th.se trees for th.ir multifunctional uses including timber,firewood,ch.rcoal,medicine,*** trees also could improve soil ***,th. amount of soil ph.sical and ch.mical properties enh.nced by th. two species must be determined to maintain th. sustainable conservation of th. species in th. parklands and to scale up to similar agroecological ***,we selected twelve isolated trees,six from each.species th.t h.d similar dendrometric ch.racteristics and were growing in similar environmental *** divided th. canopy cover of each.tree into th.ee radial distances:mid-canopy,canopy edge,and canopy gap(control).At each.distance,we took soil samples from th.ee different *** collected 216 soil samples(h.lf disturbed and th. oth.r h.lf undisturbed)from each.canopy position and soil *** density(BD),soil moisture content(SMC),soil organic carbon(SOC),total nitrogen(TN),available ph.sph.rus(AP),available potassium(AK),p h.electrical conductivity(EC),and cation exch.nge capacity(CEC)were *** revealed th.t soil ph.sical and ch.mical properties significantly improved except for soil texture and EC under both.species,CEC under ***,and soil p h.under ***,all th. studied soils were improved under both.species canopy as compared with.canopy ***,TN,AP,and AK under canopy of th.se trees were respectively 24.1%,11.1%,55.0%,and 9.3% h.gh.r th.n th.se soils under *** two parkland agroforestry species significantly enh.nced soil fertility near th. canopy of top

关键词： agroforestry bulk density carbon stock dispersed tree soil texture tree canopy

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Integralinput-to-statestability ystemswith.malldelays Integral input-to-state stability of systems with.small delays

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Control Th.ory and Tech.ology 2024年第3期22卷 455-467页

作者： R.h.h.rsh. Nawarath.a Yuandan Lin Yuan Wang Department of Math.matical Sciences Florida Atlantic UniversityBoca RatonFL 33431USA

We consider h.w small delays affect th. integral-input-to-state stability(iss)property for a *** result is similar to th. input-to-state stability(Iss)result obtained in[1]:th. iss property will be preserved in a practical and semi-global manner if th. delay interval is small ***,since th. iss quantifies th. robust stability in terms of a generalized Li norm of th. inputs instead of a generalized Loo norm of th. inputs for th. Iss case,th. tech.iques and proofs for th. Iss case do not apply to th. iss case *** th. proofs in[1]are based on th. Lyapunov-Razumikh.n approach.our proofs are based on th. iss-Lyapunov functions for th. zero-delay *** addition to th. interest by its own in sh.wing h.w th. iss property is affected by small delays,th. result also serves to th. study of th. iss property for singularly perturbed systems.

关键词： Integral-input-to-state stability Nonlinear systems Small delays Lyapunov meth.d

Dissociation cross sections ofψ(3770),ψ(4040),ψ(4160),andψ(4415)mesons with.nucleons

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Communications in Th.oretical Ph.sics 2024年第4期76卷 93-112页

作者： Ruo-Qing Ding Xiao-Ming Xu h.J Weber Department of Ph.sics Shanghai UniversityBaoshanShanghai 200444China Department of Ph.sics University of VirginiaCharlottesvilleVA 22904United States of America

We study th. dissociation of ψ(3770), ψ(4040), ψ(4160), and ψ(4415) mesons in collision with.nucleons, wh.ch.takes place in h.gh.energy proton-nucleus collisions. Th. quark interch.nge between a nucleon and a ■ meson leads to th. dissociation of th. ■ meson. We consider th. reactions:■, and■, wh.re R stands for ψ(3770), ψ(4040), ψ(4160), or ψ(4415). A reaction of a neutron and a ■ meson corresponds to a reaction of a proton and th. ■ meson by replacing th. up quark with.th. down quark and vice versa. Transition-amplitude formulas are derived from th. S-matrix *** cross sections are calculated with.th. transition amplitudes for scattering in th. prior form and in th. post form. Th. cross sections relate to nodes in th. radial wave functions of ψ(3770), ψ(4040), ψ(4160), and ψ(4415) mesons.

关键词： inelastic nucleon-ch.rmonium scattering quark interch.nge relativistic constituent quark potential model

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Tilted global solar irradiance in Bah.ain:an experimental study

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Clean Energy 2024年第2期8卷 27-34页

作者： N.Vasilikos C.Georgantopoulou h.Alajaimi S.h.Almajed M.Ah.ed D.Math.oulakis Sch.ol of Mech.nical Engineering Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain Sch.ol of Mech.nical Engineering National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In th. present work,tilted global solar irradiance data are presented and analysed,measured for a period of 1 year on th. campus of Bah.ain Polytech.ic,Kingdom of Bah.ain,from both.a fixed ph.tovoltaic panel and a moving one via a two-axis solar *** fixed panel faces south.with.an angle of 26°with.respect to th. h.rizontal,coinciding with.th. local geograph.cal *** second panel is moved by two motors,controlled by a global positioning system and suitable software so th.t th. Sun’s rays are perpendicular to th. panel surface.A pyranometer is installed on each.panel,recording th. tilted global solar irradiance,stored by using a data *** analysis of th. data obtained sh.ws a 33%solar energy gain on an annual basis for th. moving panel(2780 versus 2088 kWh.m^(2) on th. fixed panel).More importantly,in June,wh.n th. energy demand in Bah.ain is elevated due to th. increased residential cooling loads,th. solar energy received by th. moving panel is 54.7%h.gh.r compared with.th.t of th. fixed *** a percentage basis,th. increase in solar energy from th. moving panel is profound in th. early morning and late evening ***,th. reduction in th. solar energy received by th. fixed panel from May to June does not appear in th. moving panel because of th. adjustable orientation of th. *** th. year,th. mean daily solar power varies between 0.37 and 0.56 kW/m^(2) for th. fixed panel,and 0.45 and 0.70 kW/m^(2) for th. moving *** winter,solar energy fluctuations are elevated due to erratic weath.r conditions th.t present a peak standard deviation of 28%of th. corresponding *** data presented are useful for potential solar investments in Gulf countries.

关键词： tilted solar irradiance renewable energy solar tracking ph.tovoltaic Gulf Cooperation Council Countries

Next generation multiple access for IMT towards 2030 and beyond

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Science Ch.na(Information Sciences) 2024年第6期67卷 448-450页

作者： Zh.guo DING Robert SCh.BER Pingzh. FAN h.Vincent POOR Department of Computer and Information Engineering Khalifa University Department of Electrical and Electronic Engineering University of Manchester Institute for Digital Communications Friedrich Alexander-University Erlangen-Nurnberg (FAU) CSNMT International Cooperation Research.Center (MoST) Southwest Jiaotong University Department of Electrical and Computer Engineering Princeton University

Multiple access tech.iques are fundamental to th. design of wireless communication systems,since many crucial components of such.systems depend on th. ch.ice of th. multiple access tech.ique[1].For example,th. use of ...

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Alloph.ne as a Nanotech.ological Additive in Masonry Materials to Increase Resistance and Waterproofing

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Advances in Materials Ph.sics and Ch.mistry 2024年第8期14卷 196-212页

作者： Edward h. Jiménez Joao Rivera Juan h. Villalba Paola E. Vera Marlon Cuenca Belén Granja Javier Fuentes Sandra Gavilanes Daniel h.dalgo Fernando Garcia Jose Bermudez Wash.ngton Ruiz Alexis Martial Debut Facultad de Ingeniera Qumica Universidad Central del Ecuador Quito Ecuador Facultad de Arquitectura y Urbanismo Universidad Central del Ecuador Quito Ecuador Nanomaterials Ch.racterization Laboratory Universidad de las Fuerzas Armadas ESPE Sangolqu Ecuador

Th. constant need for h.gh.strength.materials in th. construction industry promotes th. research.of additives th.t improve th. properties of masonry materials. Th. use of alloph.ne as an additive in concrete and mortar mixtures was implemented to improve th.ir strength.and waterproofing, respectively, using compression and water absorption tests according to th.ir corresponding standards (ASTM C1231, ASTM D2938, and ASTM C1585). Th. samples were evaluated at different concentrations and curing ages. In addition, different sand/cement ratios were considered for th. mortar. Th. results revealed th.t th.re was a 9.4% increase in compressive strength.in concrete and a 23.7% reduction in water absorption in mortar for th. 5:1 ratio. Th.se ch.nges would be th. result of th. interaction of th. nanoporous additive in th. atomic crystal structure of th. material demonstrating th. nanotech.ological nature of alloph.ne.

关键词： Alloph.ne Nano Additive Strength Impermeability Concrete Mortar

Racial and Eth.ic Differences in Orth.rexia Nervosa Symptomatology and Oth.r Disordered Eating

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Open Journal of Psych.atry 2024年第4期14卷 287-299页

作者： Dilan h. Arreguin Kendria S. Sh.elds-Rh.des Melissa L. h.rel Crystal D. Oberle Department of Psych.logy Texas State University San Marcos TX USA

Wh.le some research.h.s explored racial and eth.ic differences in disordered eating, th.s study may be th. first to examine th.se differences in orth.rexia nervosa, involving obsessive-compulsive th.ugh.s and beh.viors concerning h.alth. eating, wh.ch.negatively impact one’s life. Adult participants, recruited from college courses and social media, completed an online survey with.th. Orth.rexia Nervosa Inventory (ONI) and th. Eating Attitudes Test-26 (EAT-26). Regarding racial and eth.ic background, 743 were Wh.te, 249 were h.spanic, 87 were Black, 61 were Asian or Pacific Islander, and 110 were biracial/multiracial. A MANCOVA revealed th.t th. racial and eth.ic groups did not differ on th. ONI subscales assessing orth.rexic beh.viors, impairments, and emotions, after accounting for gender, BMI, and EAT-26 total scores th.t were covariates. In contrast, a second MANCOVA did reveal group differences on th. EAT-26 subscales, after accounting for gender, BMI, and ONI total scores th.t were covariates. Black participants scored significantly lower th.n th. oth.r racial and eth.ic groups on th. subscale assessing dieting beh.viors ch.racteristic of anorexia nervosa, and th. subscale assessing binge-eating and purging beh.viors ch.racteristic of bulimia nervosa. Furth.r, h.spanic participants scored significantly lower th.n Wh.te participants on th. latter subscale. Th.se findings suggest th.t wh.le orth.rexic symptomatology does not differ based on race and eth.icity, a Black race and h.spanic eth.icity may be protective factors against disordered eating, perh.ps related eith.r to cultural norms concerning body image or to th. resiliency and social support among th. Black and h.spanic communities.

关键词： Race Eth.icity Orth.rexia Disordered Eating