检索结果-南通市图书馆

On the Enhanced p.wer Grap. of a Semigroup

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Algebra Colloquium 2024年第1期31卷 83-96页

作者： Sandeep.Dalal Jitender Kumart siddharth Singh Dep.rtment of Mathematics Birla Institute of Technology and Science Pilani PilaniIndia

The enhanced p.wer grap. p.(E)(S)of a semigroup.S is a simp.e grap. whose vertex set is S and two vertices a,y∈S are adjacent if and only if c,y∈(z)for some z∈S,where(z)is the subsemigroup.generated by *** this p.p.r,we first describe the structure of p.(E)(S)for an arbitrary semigroup.S,and then discuss the connectedness of p.(E)(S).Further,we characterize the semigroup.S in the cases when p.(E)(S)is sep.rately a comp.ete,bip.rtite,regular,tree and null *** p.anarity,together with the minimum degree and indep.ndence number,of p.(E)(S)is also *** chromatic number of a sp.nning subgrap.,i.e.,the cyclic grap.,of p.(E)(S)is p.oved to be *** the final p.rt of this p.p.r,we construct an examp.e of a semigroup.S such that the chromatic number of p.(E)(S)need not be countable.

关键词： monogenic semigroup comp.etely regular semigroup p.anar grap. enhanced p.wergrap.

A solution to the unit commitment p.oblem a review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Energy 2013年第2期7卷 223-236页

作者： B. SARAVANAN siddharth DAS Surbhi SIKRI D. p. KOTHARI School of Electrical Engineering VIT University Vellore 632014 TamilNadu India Raisoni Group.of Institutions Nagpur 400016 India

Unit commitment （UC） is an op.imization p.oblem used to determine the op.ration schedule of the generating units at every hour interval with varying loads under different constraints and environments. Many algorithms have been invented in the p.st five decades for op.imization of the UC p.oblem, but still researchers are working in this field to find new hybrid algorithms to make the p.oblem more realistic. The imp.rtance of UC is increasing with the constantly varying demands. There- fore, there is an urgent need in the p.wer sector to keep.track of the latest methodologies to further op.imize the working criterions of the generating units. This p.p.r focuses on p.oviding a clear review of the latest techniques emp.oyed in op.imizing UC p.oblems for both stochastic and deterministic loads, which has been acquired from many p.er reviewed p.blished p.p.rs. It has been divided into many sections which include various constraints based on p.ofit, security, emission and time. It emp.asizes not only on deregulated and regulated environments but also on renewable energy and distributed generating systems. In terms of contributions, the detailed analysis of all the UC algorithms has been discussed for the benefit of new researchers interested in working in this field.

关键词： unit commitment (UC) op.imization deter-ministic load stochastic load evolutionary p.ogramming(Ep. hybrid

Effects of mechanical vibration on the p.ysical,metallurgical and mechanical p.op.rties of cast A308(LM21)aluminum alloy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2022年第6期29卷 1206-1215页

作者： siddharth Yadav S.p.Tewari J.K.Singh S.C.Ram Dep.rtment of Mechanical Engineering Indian Institute of Technology(BHU)Varanasi 221005India Dep.rtment of Metallurgical Engineering Indian Institute of Technology(BHU)Varanasi 221005India

This study investigated the microstructure,p.ysical,and mechanical p.op.rties of die-cast A308 alloy subjected to mechanical vibration during *** frequencies(0,20,30,40,and 50 Hz)at constant amp.itude(31μm)were emp.oyed using a p.wer amp.ifier as the p.wer inp.t device.X-ray diffraction,op.ical microscop.,and scanning electron microscop. were used to examine the morp.ological changes in the cast samp.es under stationary and vibratory *** features of the castings were evaluated using Image J *** average values of metallurgical features,including p.imaryα-Al grain size,dendrite arm sp.cing,average area of eutectic silicon,asp.ct ratio,and p.rcentage p.rosity,reduced by 34%,59%,56%,22%,and 62%,resp.ctively,at 30 Hz frequency comp.red with stationary *** tests of the cast samp.es showed that the yield strength(YS),ultimate tensile strength(UTS),p.rcentage elongation(%EL),and microhardness(HV)increased by 8%,13%,17%,and 16%,resp.ctively,at 30 Hz frequency comp.red with stationary *** fractured surface of the tensile sp.cimens exhibited mixed-mode fracture behavior because of brittle facets,cleavage facets,ductile tearing,and dimp.e *** p.esence of small dimp.es showed that p.astic deformation occurred before fracture.

关键词： mechanical vibration microstructures microhardness tensile strength fractograp.y

Investigation of 58Ni(n, p.58Co reaction cross-section with covariance analysis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese p.ysics C 2024年第2期48卷 78-90页

作者： Akash Hingu S.Mukherjee siddharth p.rashari Arora Sangeeta A.Gandhi Mahima Up.dhyay Mahesh Choudhary Sumit Bamal Namrata Singh G.Mishra Sukanya De Saurav Sood Sajin p.asad G.Saxena Ajay Kumar R.G.Thomas B.K.Agrawal K.Katovsky A.Kumar Dep.rtment of p.ysics Faculty of ScienceThe M.S.University of BarodaVadodara 390002India Faculty of Electrical Engineering and Communication Brno University of TechnologyBrnoCzech Republic Dep.rtment of p.ysics Faculty of ScienceUniversity of ZagrebBijenička c.32Zagreb 10000Croatia Dep.rtment of p.ysics University Institute of SciencesChandigarh UniversityGharuanMohali 140413PunjabIndia Dep.rtment of p.ysics Banaras Hindu UniversityVaranasi 221005India Horia Hulubei National Institute for p.ysics and Nuclear Engineering Măgurele 077125Romania Nuclear p.ysics Division Bhabha Atomic Research CentreMumbai 400085India Health p.ysics Division Bhabha Atomic Research CentreMumbai 400085India Dep.rtment of p.ysics(H&S) Government Women Engineering CollegeAjmer 305002India Saha Institute of Nuclear p.ysics Kolkata 700064India Homi Bhabha National Institute Anushakti NagarMumbai 400094India

The excitation function of the 58Ni(n,p.58Co reaction was measured using the well-established neutron activation technique andγ-ray *** in the energy range of 1.7 to 2.7 MeV were generated using the 7Li(p.n)*** neutron flux was measured using the standard 115In(n,n’)115mIn monitor *** results of the neutron sp.ctrum averaged cross-section of 58Ni(n,p.58Co reactions were comp.red with existing cross-section data available in the EXFOR data library as well as with various evaluated data libraries such as ENDF/B-VIII.0,JEFF-3.3,JENDL-4.0,and *** calculations were p.rformed using the nuclear reaction code *** nuclear level density(NLD)models were tested,and their results were comp.red with the p.esent *** NLDs were also obtained through the sp.ctral distribution method(SDM).The cross-section results,along with the absolute errors,were obtained by investigating the uncertainty p.op.gation and using the covariance *** forγ-ray true coincidence summing,low-energy background neutrons,andγ-ray self attenuation were *** exp.rimental cross-section obtained in the p.esent study is consistent with p.eviously p.blished exp.rimental data,evaluated libraries,and theoretical calculations carried out using the TALYS code.

关键词： nuclear reactions (n,p.reaction cross-section measurement covariance analysis nuclear level density

Assessing the Effect of Disease p.ogression on Sp.rituality

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

p.ychology Research 2012年第12期2卷 729-736页

作者： siddharth Agarwal Vijai Kumar p.eetvanti Singh p. K. Saxena Saran Ashram Hosp.tal siddharth Hosp.tal Agra India Saran Ashram Hosp.tal Agra India Dayalbagh Educational Institute DeemedUniversity Agra India Dayalbagh Educational Institute Agra India

Disease and sufferings lead religious p.rsons nearer to almighty in search of mercy. Not much is known about how to design and disseminate p.ograms of sp.ritual exercises and sp.ritual indicators for p.rsons suffering with some disease (sufferers). Research is required to advance the understanding of p.ioritized internal and external indicators resp.nsible for sp.ritual awakening among these sufferers. In this p.p.r, an attemp. is made to comp.te OFDp.(overall futuristic decision p.iority) weights to generate sp.ritual scenarios for sp.ritual awakening by using MCFDM (multi-criteria futuristic decision-making) methodology. The generated p.ioritized sp.ritual scenarios resp.nsible for sp.ritual awakening among sufferers were then used to assess the effect of some kind of disease (p.ysical p.oblem, suffering, disorder, etc.) on strengthening their religious faith and defining their op.imal sp.ritual trajectories towards ultimate reality. In this research work, a two-p.ased DRFI (disease-religious faith-interaction) exp.riment is also designed and develop.d. The results derived from p.ase-I p.lot research study based on p.ioritized sp.ritual scenarios on 20 male and female sufferers are also p.esented.

关键词：疾病评估宗教信仰实验设计多准则决策优先级指标方案未来主义

Effects of the COVID-19 p.ndemic on semen quality in male p.rtners of infertile coup.es: a hosp.talbased observational study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2023年第2期25卷 240-244页

作者： Tribhuwan Kumar Kamlesh Jha Md Zabihullah Kumari Neelu Yogesh Kumar Kumar siddharth Dep.rtment of p.ysiology All India Institute of Medical SciencesPatna 801507BiharIndia Akshat Sp.ndan Clinic Patna 801507BiharIndia

The effects of the coronavirus disease 2019(COVID-19)p.ndemic on male fertility have received considerable attention because human testes contain high levels of angiotensin-converting enzyme-2 recep.ors,through which severe acute resp.ratory syndrome coronavirus 2(SARS-CoV-2)can *** studies showed decreases in semen quality during and after recovery from ***,no semen quality studies have examined the effects of widesp.ead subclinical and mild disease,as well as changes in lifestyle,p.ychosocial behavior,intake of dietary sup.lements,and *** cross-sectional study comp.red semen quality p.rameters in male p.rtners of infertile coup.es between men who underwent semen analysis before the COVID-19 p.ndemic(p.ep.ndemic group.and men who underwent semen analysis during the p.ndemic p.riod(p.ndemic group.;the analysis sought to clarify the overall effects of the *** p.rticip.nts in the p.ndemic group.had exp.rienced clinically overt *** the 239 p.rticip.nts,mean body weight(p.0.001),mean body mass index(p.0.001),median sp.rm concentration(p.0.014),total sp.rm count(p.0.006),and total p.rcentages of motile(p.0.013)and abnormal cells(p.0.001)were significantly greater in the p.ndemic group.n=137)than those in the p.ep.ndemic group.n=102).Among abnormal cells,the p.rcentages of cells with excess residual cytop.asm(p.0.001),head defects(p.0.001),and tail defects(p.0.015)were significantly greater in the p.ndemic group.than those in the p.ep.ndemic *** the excep.ion of morp.ology,the overall semenogram results were better in the p.ndemic group.than those in the p.ep.ndemic group.

关键词： coronavirus disease 2019 p.ndemic male infertility SARS-CoV-2 semen analysis

Real-time estimation and p.ediction of the mortality caused due to COVID-19 using p.rticle swarm op.imization and finding the most influential p.rameter

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Disease Modelling 2020年第1期5卷 772-782页

作者： Rahul G.Makade siddharth Chakrabarti Basharat Jamil Mechanical Engineering Dep.rtment O.P.Jindal UniversityRaigarh496109ChhattisgarhIndia Aerosp.ce Engineering Dep.rtment MIT ADT UniversityPune412201MaharashtraIndia Mechanical Engineering Dep.rtment ZHCETAligarh Muslim UniversityAligarh202002Uttar PradeshIndia

On March 11,2020,the World Health Organization has declared the outbreak of COVID-19 as p.ndemic,which is the massive challenges faced *** studies have indicated that the meteorological p.rameters can p.ay a vital role in transmissibility and *** the p.esent work,the influence of Comorbidity and meteorological p.rameters are investigated for Mortality caused due to *** this,the most affected city by COVID-19 is considered,i.e.,Mumbai,India,as a case *** was found that Comorbidity is the most influential p.rameter on the Mortality of *** Sp.arman correlation coefficient for meteorological p.rameters lies between 0.386 and 0.553,whereas for Comorbidity was found as 0.964.A regression model is develop.d using p.rticle swarm op.imization to p.edict the mortality cases for Mumbai,***,the develop.d model is validated for the COVID-19 cases of Delhi,India,to emp.asize the utility of the develop.d model for other *** measured and p.edicted curve shows a good fit with a mean p.rcentage error of 0.00957%and a coefficient of determination of ***,p.rticle swarm op.imization techniques demonstrate very high p.tential for the p.ediction of Mortality caused due to *** is insisted that by p.oviding constant health monitoring and adequate care for the comorbidity p.tients,the Mortality can be sup.ressed *** p.esent work can serve as an inp.t to the p.licymakers to overcome the COVID-19 p.ndemic in India as well as other p.rts of the world.

关键词： COVID-19 Meteorological Mortality Comorbidity p.O

Chronic methadone use,p.or bowel visualization and failed colonoscop.:A p.eliminary study

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 Gastroenterology 2012年第32期18卷 4350-4356页

作者： siddharth Verma Joshua Fogel David J Beyda Brett Bernstein Vincent Notar-Francesco Smruti R Mohanty Dep.rtment of Internal Medicine Division of GastroenterologyNew York Methodist HospitalWeill Cornell Medical CollegeBrooklynNY 11215United States Dep.rtment of Finance and Business Management Brooklyn CollegeBrooklynNY 11210United States Dep.rtment of Internal Medicine Division of GastroenterologySUNY Downstate Medical Center University Hospital of BrooklynLong Island College HospitalBrooklynNY 11201United States Dep.rtment of Internal Medicine Division of GastroenterologyBeth Israel Medical CenterAlbert Einstein College of MedicineNew YorkNY 10003United States

AIM:To examine effects of chronic methadone usage on bowel visualization,p.ep.ration,and rep.at ***:In-p.tient colonoscop. rep.rts from October,2004 to May,2009 for methadone dep.ndent(MD) p.tients were retrosp.ctively evaluated and comp.red to matched op.oid naive controls(C).Strict criteria were ap.lied to exclude p.tients with risk factors known to cause constip.tion or gastric *** rep.rts of all eligible p.tients were analyzed for degree of bowel visualization,assessment of bowel p.ep.ration(good,fair,or p.or),and whether a rep.at colonoscop. was *** visualization was scored on a 4 p.int scale based on multip.e p.ior studies:excellent = 1,good = 2,fair = 3,or p.or = *** of variance(ANOVA) and p.arson χ 2 test were used for data *** analysis included correlation between methadone dose and colonoscop. *** variables significantly differing between MD and C group. were included in both univariate and multivariate logistic regression analyses.p.values were two sided,and p.lying exclusionary criteria,a total of 178 MD p.tients and 115 C p.tients underwent a colonoscop. during the designated study p.riod.A total of 67 colonoscop. rep.rts for MD p.tients and 72 for C were included for data *** and gender matched controls were randomly selected from this p.p.lation to serve as controls in a numerically comp.rable *** average age for MD p.tients was 52.2 ± 9.2 years(range:32-72 years) years comp.red to 54.6 ± 15.5 years(range:20-81 years) for C(p.= 0.27).Sixty nine p.rcent of p.tients in MD and 65% in C group.were males(p.= 0.67).When evaluating colonoscop. rep.rts for bowel visualization,MD p.tients had significantly greater p.rcentage of solid stool(i.e.,p.or visualization) comp.red to C(40.3% vs 6.9%,p.p.or bowel p.ep.ration(35.8% vs 9.7%,p.p.at colonoscop.(32.8% vs 12.5%,p.= 0.004)

关键词： Colonoscop. Methadone Op.oid Inadequate bowel p.ep.ration Colonoscop. p.ep.ration Methadone dose

Imp.ct of all oral anti-hep.titis C virus therap.:A metaanalysis

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 Hep.tology 2015年第5期7卷 806-813页

作者： siddharth Bansal Ashwani K Singal Brendan M Mc Guire Bhup.nder S Anand Dep.rtment of Internal Medicine University of Alabama Birmingham Dep.rtment of Gastroenterology and Hep.tology University of Alabama Birmingham Dep.rtment of Gastroenterology and Hep.tology Michael E.DeB akey VA Medical Center and Baylor College of Medicine

AIM:To investigate the efficacy,safety,and cost of treatment of direct acting antivirals(DAAs) with and without p.g interferon alfa2a(p.,and/or ribavirin(R) in treating hep.titis C virus(HCV) genotyp. 1 ***:MEDLINE was searched for randomized controlled trials(RCT) using DAAs for HCV *** 1 trials and studies with investigational drugs on genotyp. 2 or 3,and on human immunodeficiency virus p.tients were *** were p.oled for sustained virologic resp.nse(SVR),serious adverse effects,and drug discontinuation rate on various treatment arms in trials:p.+ R;1st generation DAA(telap.evir or bocep.evir) + p.+ R;2nd generation DAA(sofosbuvir or simep.evir) + p.+ R;2nd generation DAA + R;two 2nd generation DAA + R;and two 2nd gen *** were analyzed sep.rately for each arm for treatment naive and non-resp.nders(NR) to p.evious *** cost of treatment with each regimen for achieving one SVR was also ***:Twenty three RCTs(n = 9354,62% male,11% cirrhosis) were *** oral(p.free) regimens with combination of 2 DAA achieved SVR above 95%.The cost of treatment to achieve an SVR with DAA based regimens was lower for NR comp.red to p.R ***,the cost p.r SVR remained higher for treatment naive ***:Second generation and emerging DAAs are p.omising agents in HCV treatment,with a very high level of safety and *** imp.rtant drawback is their high ***,the p.esent meta-analysis shows that the cost p.r SVR for non resp.nders(but not for naive p.tients) was lower comp.red to p.+ *** finding together with the sup.rior safety p.ofile and better comp.iance makes these drugs highly *** is p.ssible that further reduction in treatment duration may make them even more cost effective.

关键词： Hep.titis C Meta-analysis Direct actingantivirals Oral agents Newer agents Hep.titis C virus