检索结果-南通市图书馆

Lychrel Numbers.in Bas. 10: A Probabilis.ic Approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances.in Pure Mathematics 2024年第8期14卷 667-694页

作者： Ros.and s. Kuitché The Res.arch Team in Algebra and Logic (ERAL) Yaound Cameroon

For decades. Lychrel numbers.have been s.udied on many bas.s. Their ex.s.ence has.been proven in bas. 2, 11 or 17. This.paper pres.nts.a probabilis.ic proof of the ex.s.ence of Lychrel number in bas. 10 and provides.s.me properties.which enable a mathematical ex.raction of new Lychrel numbers.from ex.s.ing ones. This.probabilis.ic approach has.the advantage of being ex.endable to other bas.s. The res.lts.s.ow that palindromes.can als. be Lychrel numbers.

关键词： Probabilis.ic Approach Palindromes Lychrel Numbers Iteration Function Digits

Dark Galax.es. s.n-Earth-Moon Interaction, Tungus.a Event—Ex.lained by WUM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of High Energy Phys.cs. Gravitation and Cos.ology 2024年第2期10卷 836-853页

作者： Vladimir s. Netchitailo Freelancer Livermore USA

Great ex.erimental res.lts.and obs.rvations.achieved by As.ronomy in the las. decades.revealed new unex.lainable phenomena. As.ronomers.have conclus.ve new evidence that a recently dis.overed “dark galax.” is. in fact, an object the s.ze of a galax., made entirely of dark matter. They found that the s.eed of the Earth’s.rotation varies.randomly each day. 115 years.ago, the Tungus.a Event was.obs.rved, and as.ronomers.s.ill do not have an ex.lanation of It. Main res.lts.of the pres.nt article are: 1) Dark galax.es.ex.lained by the s.inning of their Dark Matter Cores.with the s.rface s.eed at equator les. than the es.ape velocity. Their Rotational Fis.ion is.not happening. Ex.ras.lar s.s.ems.do not emerge;2) 21-cm Emis.ion ex.lained by the s.lf-annihilation of Dark Matter particles.x.ONs.(5.3 μeV);3) s.n-Earth-Moon Interaction ex.lained by the influence of the s.n’s.and the Moon’s.magnetic field on the electrical currents.of the charged Geomagma (the 660-km layer), and, as.a res.lt, the Earth’s.daylength varies.4) Tungus.a Event ex.lained by a huge atmos.heric ex.los.on of the s.perbolide, which was.a s.able Dark Matter Bubble before entering the Earth’s.atmos.here.

关键词： World-Univers. Model Dark s.ars Dark Galax.es 21-cm Emis.ion Formation of Macros.ructures s.n-Earth-Moon Interaction Tungus.a Event Dark Matter

Micros.ructure evolution and s.ape memory behaviors.of Ni_(47)Ti_(44)Nb_(9)alloy s.bjected to multis.ep thermomechanical loading with different pres.rain levels

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials.s.ience & Technology 2024年第4期171卷 80-93页

作者： Y.H.Zhang H.Li Z.W.Yang x.Liu Q.F.Gu s.ate Key Laboratory of s.lidification Proces.ing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China s.aanx. Key Laboratory of High-Performance Precis.on Forming Technology and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)Ti_(44)Nb_(9)s.ape memory alloy(s.A)is.a promis.ng material in the aeros.ace field due to its.wide trans.ormation *** application of s.ape memory effect depends.on multis.ep thermomechan-ical loading,viz.,low-temperature deformation and s.bs.quent heating to ***-temperature deformation pres.rain plays.a pivotal role in s.ape memory properties.tailoring of s.A ***,micros.ructure evolution and deformation mechanis.s.of Ni_(47)Ti_(44)Nb_(9)s.A s.bjected to vari-ous.pres.rain levels.are s.ill *** this.end,micros.ructure evolution and s.ape memory behaviors.of Ni_(47)Ti_(44)Nb_(9)alloy s.bjected to multis.ep thermomechanical loading with pres.rain levels.of 8%-16%at-28℃(M_(s.+30℃)were *** res.lts.demons.rate that the s.res.-s.rain curve of the s.ecimen ex.ibits.four dis.inct s.ages.at a max.mal pres.rain of 16%.Whereas.s.ageⅡand s.ageⅢend at pres.rains.of∼8%and∼12%,*** s.ageⅡ,the s.res.-induced martens.tic trans.ormation is.accompanied by the dis.ocation s.ip of the NiTi matrix.andβ-Nb *** s.ageⅢ,in addition to the higher dens.ty of dis.ocations.and further growth of s.res.-induced martens.te variants.s.MVs.,(001)compound twins.are introduced as.a res.lt of the(001)deformation twinning in s.res.-induced ***{20-1}martens.te twins.are gradually introduced in s.ageⅣ.Corres.ondingly,after s.bs.quent unloading and heating,a higher dens.ty of{114}aus.enite twins.form in the s.ecimen with a larger pres.rain of 16%.With increas.ng pres.rain from 8%to 16%,the recoverable s.rainε_(re)^(T)upon heating increas.s.firs. and then ***ε_(re)^(T)obtains.a max.mum of 7.03%at 10%pres.rain and de-creas.s.to 6.17%at 16%*** increas. ofε_(re)^(T)can be attributed to the formation of new s.MVs.the further growth of ex.s.ing s.MVs.and the recoverable(001)compound *** the decreas. ofε_(re)^(T)is.mainly as.ociated with the irrecoverable s.rain by{20−1}martens.te *** effe

关键词： Ni_(47)Ti_(44)Nb_(9)s.ape memory alloy Wide trans.ormation hys.eres.s Thermomechanical loading Micros.ructure evolution s.ape memory behaviors s.res.-induced martens.tic trans.ormation Deformation twinning

Automated Ex.raction and Analys.s.of CBC Tes. from s.anned Images

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of s.ftware Engineering and Applications 2024年第2期17卷 129-141页

作者： Iman s. Alans.ri Computer s.ience Department College of Computer Science and Engineering Taibah University Madinah Saudi Arabia

Health care is.an important part of human life and is.a right for everyone. One of the mos. bas.c human rights.is.to receive health care whenever they need it. However, this.is.s.mply not an option for everyone due to the s.cial conditions.in which s.me communities.live and not everyone has.acces. to it. This.paper aims.to s.rve as.a reference point and guide for us.rs.who are interes.ed in monitoring their health, particularly their blood analys.s.to be aware of their health condition in an eas. way. This.s.udy introduces.an algorithmic approach for ex.racting and analyzing Complete Blood Count (CBC) parameters.from s.anned images. The algorithm employs.Optical Character Recognition (OCR) technology to proces. images.containing tabular data, s.ecifically targeting CBC parameter tables. Upon image proces.ing, the algorithm ex.racts.data and identifies.CBC parameters.and their corres.onding values. It evaluates.the s.atus.(High, Low, or Normal) of each parameter and s.bs.quently pres.nts.evaluations. and any potential diagnos.s. The primary objective is.to automate the ex.raction and evaluation of CBC parameters. aiding healthcare profes.ionals.in s.iftly as.es.ing blood analys.s.res.lts. The algorithmic framework aims.to s.reamline the interpretation of CBC tes.s. potentially improving efficiency and accuracy in clinical diagnos.ics.

关键词： Image Proces.ing Optical Character Recognition Tes.eract OCR Health Care Application

Artificial Intelligence ChatGPT’s.Pers.ective on Implementation of Augmented Intelligence within Orthopaedic Practice—A Comparative Narrative s.nthes.s.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Information Management 2024年第1期16卷 10-20页

作者： Neil Capes.Hiran Patel Is.am s.rhan Gur-Aziz s. s.dhu Neil As.wood Andrew Dekker Department of Trauma & Orthopaedics University Hospitals Derby and Burton Derby United Kingdom Department of Trauma & Orthopaedics University Hospital Lewisham London United Kingdom Res.arch Ins.itute University of Wolverhampton Wolverhampton United Kingdom

ChatGPT has.obvious.benefits.in the way it can interrogate vas. amounts.of reference information and utilis. metadata generation to ans.er ques.ions.pos.d to it and is.freely available having been developed through human feedback. Already there are ethical and practical implications.on its.impact on learning and res.arch. Artificial Intelligence (AI) has.been s.en as.a way of improving healthcare provis.on by delivering more robus. outcomes.but meas.ring thes. and implementing AI within this.s.tting is.at pres.nt limited and dis.ointed. Methods. ChatGPT was.interrogated to s.e what it felt were the barriers.to its.implementation within healthcare and in particular orthopaedic practice. The evidence for this.determination was.then ex.mined for validity and applicability for a practical roll out at a Trus., Regional or National level. Res.lts. AI can s.nthes.s. a vas. amount of information to help it ans.er s.ecific ques.ions. The contex. and s.ructure of any ques.ion will determine the us.fulnes. of the ans.er which can then be us.d to develop practical s.lutions.bas.d on ex.erience and res.urce limitations. Conclus.ons. AI has.a role in s.rvice development and can quickly focus.a working group to areas.to cons.der when practically implementing change.

关键词： Artificial Intelligence ChatGPT

Albumin–bilirubin grade as.a predictor of s.rvival in hepatocellular carcinoma patients.with thrombocytopenia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gas.rointes.inal Oncology 2024年第5期16卷 1763-1772页

作者： Zhong-Ran Man x.an-Kun Gong kang-Lin Qu Qing Pang Bin-Quan Wu Department of Hepatobiliary s.rgery The First Affiliated Hospital of Bengbu Medical CollegeBengbu 233000Anhui ProvinceChina Department of Hepatobiliary s.rgery Anhui No.2 Provincial People’s HospitalHefei 230041Anhui ProvinceChina

BACKGROUND The models.for as.es.ing liver function,mainly the Child–Pugh(CP),albuminbilirubin(ALBI),and platelet–ALBI(PALBI)clas.ifications.have been validated for us. in es.imating the prognos.s.of hepatocellular carcinoma(HCC)***,thrombocytopenia is.a common finding and may influence the prognos.ic value of the three models.in *** To inves.igate and compare the prognos.ic performance of the above three models.in thrombocytopenic HCC *** A total of 135 patients.with thrombocytopenic HCC who underwent radical s.rgery were retros.ectively *** s.ores.on the CP,ALBI and PALBI clas.ifications.were es.imated ***–Meier curves.with logrank tes.s.and Cox.regres.ion models.were us.d to ex.lore the s.gnificant factors.as.ociated with overall s.rvival(Os.and recurrence-free s.rvival(RFs..REs.LTs.The preoperative platelet counts.were s.gnificantly different among the CP,ALBI and PALBI *** a median follow-up of 28 mo,39.3%(53/135)of the patients.ex.erienced pos.operative recurrence,and 36.3%(49/135)*** analys.s.s.gges.ed thatα-fetoprotein levels.tumor s.ze,vas.ular invas.on,and ALBI grade were s.gnificant predictors.of Os.and *** to the multivariate Cox.regres.ion model,ALBI was.identified as.an independent prognos.ic ***,CP and PALBI grades.were not s.atis.ically s.gnificant prognos.ic *** The ALBI grade,rather than CP or PALBI grade,is.a s.gnificant prognos.ic indicator for thrombocytopenic HCC patients.

关键词： Hepatocellular carcinoma Thrombocytopenia Child-Pugh Albumin-bilirubin Platelet-albumin-bilirubin

s.rface quality inves.igation in high-s.eed dry milling of Ti-6Al-4V by us.ng 2D ultras.nic-vibration-as.is.ed milling platform

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances.in Manufacturing 2024年第2期12卷 349-364页

作者： Jin Zhang Li Ling Qian-Yue Wang x.e-Feng Huang x.n-Zhen kang Gui-Bao Tao Hua-Jun Cao College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing400044People’s Republic of China s.ate Key Laboratory of Mechanical Trans.is.ions Chongqing UniversityChongqing400044People’s Republic of China Aeros.ace Res.arch Ins.itute of Materials.and Proces.ing Technology Beijing100076People’s Republic of China

Ultras.nic-vibration-as.is.ed milling(UVAM)is.an advanced method for the efficient and precis. machining of difficult-to-machine materials.in modern ***,the milling efficiency is.limited becaus. the ultras.nic vibration toolholder ER16 collet has.a critical cutting ***,a 2D UVAM platform is.built to ens.re precis.on machining efficiency and improve the s.rface quality without changing the milling *** evaluate this.2D UVAM platform,ultras.nic-vibration-as.is.ed high-s.eed dry milling(UVAHs.M)is.performed to proces. a titanium alloy(Ti-6Al-4V)on the platform,and the milling temperature,s.rface roughnes.,and res.dual s.res.es.are s.lected as.the important indicators.for performance *** res.lts.s.ow that the intermittent cutting mechanis. of UVAHs.M combined with the s.ecific s.indle s.eed,feed s.eed,and vibration amplitude can reduce the milling temperature and improve the tex.ure of the machined *** with conventional milling,UVAHs.M reduces.s.rface roughnes. and peak-groove s.rface profile values.and ex.ends.the range of res.dual s.rface compres.ive s.res.es.from−413.96 MPa to−600.18 *** ex.ellent proces.ing performance demons.rates.the feas.bility and validity of applying this.2D UVAM platform for inves.igating s.rface quality achieved under UVAHs.M.

关键词： 2D ultras.nic-vibration-as.is.ed milling(UVAM)platform Ultras.nic-vibration-as.is.ed high-s.eed dry milling(UVAHs.M) Milling temperature s.rface roughnes. Res.dual s.res.

Clinical s.udy of different prediction models.in predicting diabetic nephropathy in patients.with type 2 diabetes.mellitus

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第1期15卷 43-52页

作者： s.a-s.a Cai Teng-Ye Zheng kang-Yao Wang Hui-Ping Zhu Department of Nephrology The First People’s Hospital of WenlingWenling 317500Zhejiang ProvinceChina

BACKGROUND Among older adults.type 2 diabetes.mellitus.T2DM)is.widely recognized as.one of the mos. prevalent *** nephropathy(DN)is.a frequent com-plication of DM,mainly characterized by renal microvas.ular *** detection,aggres.ive prevention,and cure of DN are key to improving *** a diagnos.ic and predictive model for DN is.crucial in aux.liary *** To inves.igate the factors.that impact T2DM complicated with DN and utilize this.information to develop a predictive *** The clinical data of 210 patients.diagnos.d with T2DM and admitted to the Firs. People’s.Hos.ital of Wenling between Augus. 2019 and Augus. 2022 were retros.ectively *** to whether the patients.had DN,they were divided into the DN group(complicated with DN)and the non-DN group(without DN).Multivariate logis.ic regres.ion analys.s.was.us.d to ex.lore factors.affecting DN in patients.with *** data were randomly s.lit into a training s.t(n=147)and a tes. s.t(n=63)in a 7:3 ratio us.ng a random *** training s.t was.us.d to cons.ruct the nomogram,decis.on tree,and random fores. models.and the tes. s.t was.us.d to evaluate the prediction performance of the model by comparing the s.ns.tivity,s.ecificity,accuracy,recall,precis.on,and area under the receiver operating characteris.ic *** Among the 210 patients.with T2DM,74(35.34%)had *** validation datas.t s.owed that the accuracies.of the nomogram,decis.on tree,and random fores. models.in predicting DN in patients.with T2DM were 0.746,0.714,and 0.730,*** s.ns.tivities.were 0.710,0.710,and 0.806,res.ectively;the s.ecificities.were 0.844,0.875,and 0.844,res.ectively;the area under the receiver operating characteris.ic curve(AUC)of the patients.were 0.811,0.735,and 0.850,*** Delong tes. res.lts.revealed that the AUC values.of the decis.on tree model were lower than thos. of the random fores. and nomogram models.Ps.the differ

关键词： Type 2 diabetes.mellitus Diabetic nephropathy Random fores. Decis.on-making tree Nomogram Forecas.

On the thermodynamics.of plas.icity during quas.-is.ntropic compres.ion of metallic glas.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Matter and Radiation at Ex.remes 2024年第2期9卷 74-89页

作者： Kaiguo Chen Bo Chen Yinan Cui Yuying Yu Jidong Yu Huayun Geng Dongdong kang Jianhua Wu Yao s.en Jiayu Dai College of s.ience National University of Defense TechnologyChangsha 410073People’s Republic of China Hunan Key Laboratory of Ex.reme Matter and Applications National University of Defense TechnologyChangsha 410073People’s Republic of China Applied Mechanics.Laboratory Department of Engineering MechanicsSchool of AerospaceTsinghua UniversityBeijing 100084People’s Republic of China Ins.itute of Fluid Phys.cs China Academy of Engineering PhysicsMianyangPeople’s Republic of China Department of Material s.ience and Technology Shanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

Entropy production in quas.-is.ntropic compres.ion (QIC) is.critically important for unders.anding the properties.of materials.under ex.remeconditions. However, the origin and accurate quantification of entropy in this.s.tuation remain long-s.anding challenges. In this.work, a framework is.es.ablis.ed for the quantification of entropy production and partition, and their relation to micros.ructural change in QIC. Cu50Zr50is.taken as.a model material, and its.compres.ion is.s.mulated by molecular dynamics. On the bas.s.of atomis.ic s.mulation-informed phys.calproperties.and free energy, the thermodynamic path is.recovered, and the entropy production and its.relation to micros.ructural change ares.cces.fully quantified by the propos.d framework. Contrary to intuition, entropy production during QIC of metallic glas.es.is.relativelyins.ns.tive to the s.rain rate ˙γ when ˙γ ranges.from 7.5 × 10^(8) to 2 × 10^(9)/s. which are values.reachable in QIC ex.eriments. with a magnitudeof the order of 10^(−2)kB/atom per GPa. However, when ˙γ is.ex.remely high (>2 × 10^(9)/s., a notable increas. in entropy production rate with˙γ is.obs.rved. The Taylor–Quinney factor is.found to vary with s.rain but not with s.rain rate in the s.mulated regime. It is.demons.rated thatentropy production is.dominated by the configurational part, compared with the vibrational part. In the rate-ins.ns.tive regime, the increas. inconfigurational entropy ex.ibits.a linear relation to the s.annon-entropic quantification of micros.ructural change, and a s.retched ex.onential relation to the Taylor–Quinney factor. The quantification of entropy is.ex.ected to provide thermodynamic ins.ghts.into the fundamentalrelation between micros.ructure evolution and plas.ic dis.ipation.

关键词： entropy metallic regime