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Multifractal Decomposition of Statistically Self-Similar Sets

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Acta Mathematica Sinica,english Series 2001年第3期17卷 507-516页

作者： Jing Hu YU Wuhan Institute of Physics and Mathematics,The Chinese Academy of Sciences,Wuhan 430071,P.R.China e-mail:ding@wipm.whcnc.ac.cnDi He HU College of Mathematics and Statistics.Wuhan University,Wuhan 430072,P.R.China e-mail:dhhu@*** Wuhan Institute of Physics and Mathematics The Chinese Academy of Sciences Wuhan 430071 P. R. China College of Mathematics and Statistics Wuhan University Wuhan 430072 P. R. China

Let K be a statistically self-similar set defined by *** this paper,we construct a random measure ρ which is supported by K and study the multifractal decomposition for K with p. Under such a decomposition,we obtain ... 详细信息

关键词： Statistically self-similar sets Multifractal decomposition Spectrum function

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Design Considerations for Pile Groups Supporting Marine Structures with Respect to Scour

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engineering（科研） 2012年第12期4卷 833-842页

作者： Yasser e. Mostafa Department of Irrigation and Hydraulics Faculty of Engineering Ain Shams University Cairo Egypt

Piles supporting marine structures such as jetties, relieving platforms, quay walls and fixed offshore structures are subjected to lateral loads due to berthing and mooring forces, wind, waves, storm surges and current forces. This paper presents some factors that affect the design of pile groups supporting marine structures founded in cohesionless soils. Some main aspects that should be considered in the pile group design are addressed such as pile batter angle, pile group arrangement, pile spacing, pile slenderness ratio and magnitude of lateral static loading. Numerical analyses were conducted to investigate these design aspects with and without impact of scour. Different scour depths were considered to cover the possible root causes of scour around pile groups such as waves, current and ship propeller jets. The study revealed that scour has greater impact on lateral loading of pile groups compared to its impact on single piles. Pile groups with side-by-side arrangement exposed to scour are more critical than single piles and piles groups with tandem arrangement due to the combined effect of scour and pile-soil-pile interaction. It is also concluded that scour protection is not always required. More attention and considerations should be given to scour protection around piles especially if the piles are closely spaced, arranged side-by-side and if slenderness ratio is less than 12.5.

关键词： Piles Pile Groups Marine Structures Scour Battered Piles

Delayed gastric emptying following pancreaticoduodenectomy:Incidence,risk factors,and healthcare utilization

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World Journal of Gastrointestinal Surgery 2017年第3期9卷 73-81页

作者： Somala Mohammed George Van Buren II Amy Mc elhany eric J Silberfein William e Fisher elkins Pancreas Center Michael E DeBakey Department of SurgeryBaylor College of MedicineHoustonTX 77030United States

AIM To characterize incidence and risk factors for delayed gastric emptying(DGe) following pancreaticoduodenectomy and examine its implications on healthcare utilization. MeTHODS A prospectively-maintained database was reviewed. DGe was classified using International Study Group of Pancreatic Surgery criteria. Patients who developed DGe and those who did not were compared. ReSULTS Two hundred and seventy-six patients underwent pancreaticoduodenectomy(PD)(> 80% pyloruspreserving, antecolic-reconstruction). DGe developed in 49 patients(17.8%): 5.1% grade B, 3.6% grade C. Demographic, clinical, and operative variables were similar between patients with DGe and those without. DGe patients were more likely to present multiplecomplications(32.6% vs 4.4%, ≥ 3 complications, P erative pancreatic fistula(POPF)(42.9% vs 18.9%, P = 0.001) and intra-abdominal abscess(IAA)(16.3% vs 4.0%, P = 0.012). Patients with DGe had longer hospital stay(median, 12 d vs 7 d, P ere more likely to require transitional care upon discharge(24.5% vs 6.6%, P e analysis, predictors for DGe included POPF [OR = 3.39(1.35-8.52), P = 0.009] and IAA [OR = 1.51(1.03-2.22), P = 0.035].CONCLUSION Although DGe occurred in ents after PD, it was associated with increased healthcare utilization. Patients with POPF and IAA were at risk for DGe. Anticipating DGe can help individualize care and allocate resources to high-risk patients.

关键词： Delayed gastric emptying Pancreaticoduodenectomy Post-operative pancreatic fistula

The KLOe Online Calibration System

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International Conference on Computing in High energy and Nuclear Physics 2001年第1期 129-132页

作者： e.Pasqualucci INFN，Roma I－00185Roma

Based on all the features of the KLOe online software,the online calibration system performs current calibration quality checking in real time and starts automatically new calibration procedures when *** manager process controls the system,implementing the interface to the online system,receiving information from the run control and translating its state transitions to a separate state *** acts as a " calibration run controller"and performs failure recovery when requested by a set of process *** core of the system is a multi-threaded OO histogram server that receives histogramming commands by remote processes and operates on local ROOT histograms.A client library and C,fortran and C++ application interface libraries allow the user to connect and define his own histogram or read histograms owned by others using an bool-like *** calibration processes running in parallel in a destributed,multiplatform environment can fill the same histograms,allowing fast external information check.A monitor thread allow remote browsing for visual inspection,Pre-filtered data are read in nonprivileged spy mode from the data acquisition system via the Kloe Integrated Dataflow,privileged spy mode from the data acquisiton system via the Kole Integrated *** main characteristics of the system are presented.

关键词： KLOe在线校正元件分布结构探测器

Subcutaneous or Transvenous Defibrillator Therapy

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四川生理科学杂志 2021年第1期43卷 125-125页

作者： Reinoud e Knops From the Heart Center Department of Clinical and Experimental Cardiology Amsterdam Cardiovascular Sciences Amsterdam University Medical Centers University of Amsterdam (R.E.K. L.R.A.O.N. L.V.A.B. T.F.B. A.-F.B.E.Q. L.S. W.S. A.W. K.C.W. J.R.G. K.M.K. M.C.B. J.G.P.T. A.A.M.W.) ERN GUARD-Heart (E.R.B. P.D.L. A.A.M.W.) and the Department of Cardiology OLVG (J.S.S.G.J.) Amsterdam the Department of Cardiology Isala Heart Centre Zwolle (P.-P.H.M.D.) the Department of Cardiology St. Antonius Hospital Nieuwegein (L.V.A.B.) the Department of Cardiology Flevoziekenhuis Almere (N.R.B.) the Department of Cardiology Radboud University Medical Center Nijmegen (M.A.B.) the Department of Cardiology Cardiovascular Research Institute Maastricht Maastricht University Medical Center Maastricht (K.V.) the Department of Cardiology Amphia Hospital Breda (M.A.) Werkgroep Cardiologische Centra Nederland Utrecht (M.A.) and the Department of Electrophysiology Catharina Hospital Eindhoven (F.A.L.E.B.) — all in the Netherlands the First Department of Medicine-Cardiology University Medical Center Mannheim and the German Center for Cardiovascular Research Partner Site Heidelberg-Mannheim Mannheim (J.K.) Klinik für Innere Medizin III Schwerpunkt Kardiologie und Angiologie Universitätsklinikum Schleswig-Holstein Campus Kiel Kiel (H.B.) the Department of Medicine I Ludwig-Maximilians University Hospital and the German Center for Cardiovascular Research Munich Heart Alliance Munich (S.K.) and the Department of Electrophysiology Heart Center at University of Leipzig Leipzig (S.R.) — all in Germany the Division of Cardiology Section of electrophysiology Emory University Atlanta (M.F.E.-C.) the Cardiology Clinical Academic Group St. George’s University of London and St. George’s University Hospitals NHS Foundation Trust London (E.R.B.) and Office of the Director of Clinical Electrophysiology Research and Lead for Inherited Arrhythmia Specialist Services University College London and

Background:The subcutaneous implantable cardioverter-defibrillator(ICD)was designed to avoid complications related to the transvenous ICD lead by using an entirely extrathoracic *** comparing these systems has been based primarily on observational ***:We conducted a noninferiority trial in which patients with an indication for an ICD but no indication for pacing were assigned to receive a subcutaneous ICD or transvenous *** primary end point was the composite of device-related complications and inappropriate shocks;the noninferiority margin for the upper boundary of the 95%confidence interval for the hazard ratio(subcutaneous ICD *** ICD)was 1.45.A superiority analysis was prespecified if noninferiority was established.

关键词： venous Therapy entirely

The molecular epidemiology of multiple zoonotic origins of SARS-CoV-2

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四川生理科学杂志 2022年第7期44卷 1299-1299页

作者： Jonathan e Pekar Bioinformatics and Systems Biology Graduate Program University of California San Diego La Jolla CA 92093 USA Department of Biomedical Informatics University of California San Diego La Jolla CA 92093 USA Department of Human Genetics David Geffen School of Medicine University of California Los Angeles Los Angeles CA 90095 USA Department of Immunology and Microbiology The Scripps Research Institute La Jolla CA 92037 USA Department of Computer Science and engineering University of California San Diego La Jolla CA 92093 USA Department of Mathematics University of California San Diego La Jolla CA 92093 USA Department of ecology and evolutionary Biology University of Arizona Tucson AZ 85721 USA W. Harry Feinstone Department of Molecular Microbiology and Immunology Johns Hopkins Bloomberg School of Public Health Baltimore MD 21205 USA New York City Public Health Laboratory New York City Department of Health and Mental Hygiene New York NY 11101 USA Department of Microbiology Institute for Viral Diseases Biosafety Center College of Medicine Korea University Seoul South Korea BK21 Graduate Program Department of Biomedical Sciences Korea University College of Medicine Seoul 02841 Republic of Korea National Public Health Laboratory National Centre for Infectious Diseases Singapore Malaysia Genome and Vaccine Institute Jalan Bangi 43000 Kajang Selangor Malaysia Department of Medicine University of California San Diego La Jolla CA 92093 USA Department of Microbiology and Immunology School of Medicine Tulane University New Orleans LA 70112 USA Zalgen Labs Frederick MD 21703 USA Global Virus Network (GVN) Baltimore MD 21201 USA Sydney Institute for Infectious Diseases School of Life and Environmental Sciences and School of Medical Sciences The University of Sydney Sydney NSW 2006 Australia Institute of evolutionary Biology University of Edinburgh King’s Buildings Edinburgh EH9 3FL UK Department of Biomathematics David Geffen School of Medicine Un

Understanding the circumstances that lead to pandemics is important for their prevention. Here, we analyze the genomic diversity of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) early in the coronavirus disease 2019 (COVID-19) pandemic. We show that SARS-CoV-2 genomic diversity before February 2020 likely comprised only two distinct viral lineages, denoted A and B. Phylodynamic rooting methods, coupled with epidemic simulations, reveal that these lineages were the result of at least two separate cross-species transmission events into humans. The first zoonotic transmission likely involved lineage B viruses around 18 November 2019 (23 October-8 December), while the separate introduction of lineage A likely occurred within weeks of this event.

关键词： epidemiology likely acute

elevating Software Defect Prediction Performance Through an Optimized GA-DT and PSO-ACO Hybrid Approach

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Journal of Harbin Institute of Technology(New series) 2024年

作者： Chennappan R Mathumathi e Department of Computer Applications， Karpagam Academy of Higher education

In the dynamic landscape of software technologies， the demand for sophisticated applications across diverse industries is ever-increasing. However， predicting software defects remains a crucial challenge for ensuring the resilience and dependability of software systems. This study presents a novel software defect prediction technique that significantly enhances performance through a hybrid machine learning approach. The innovative methodology integrates a Genetic Algorithm (GA) for precise feature selection， a Decision Tree (DT) for robust classification， and leverages the capabilities of Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) algorithms for precision-driven optimization. The utilization of datasets from varied sources enriches the predictive prowess of our model. Of particular significance in our pursuit is the unwavering focus on enhancing the prediction process through a highly refined PSO-ACO algorithm， thereby optimizing the efficiency and effectiveness of the GA-DT hybrid model. The thorough evaluation of our proposed approach unfolds across seven software projects， unveiling a paradigm shift in performance metrics. Results unequivocally demonstrate that the GA-DT with PSO-ACO algorithm surpasses its counterparts， showcasing unparalleled accuracy and reliability. Furthermore， our hybrid approach demonstrates outstanding performance in terms of F-measure， with an impressive increase rate of 78%.

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Pelvic Floor Function in the Female

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Open Journal of Obstetrics and Gynecology 2014年第14期4卷 826-831页

作者： Christos e. Constantinou Stanford University Medical School Stanford USA

Pelvic Floor (PF) disorders, such as urinary incontinence and prolapse accounted for over 400,000 operations in the USA in 1987 [1], and nearly a third of these were re-operations. It is estimated that 30% - 50% of women in europe and the USA are affected by Urinary incontinence [2]. Stress Urinary Incontinence (SUI), the involuntary leakage of urine on coughing, sneezing, exertion or effort, is the most common form of urinary incontinence in women. The scientific understanding of normal PF function is limited and consequently treatment of these prevalent, disabling conditions is, at best, inefficient.

关键词： Review Paper

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TC4钛合金室温滞后回弹研究

稀有金属材料与工程 2017年第11期46卷 3267-3271页

作者：孙帅鄂大辛北京理工大学北京100081

为了探明TC4钛合金室温下的滞后回弹效应,采用万能试验机进行了不同预应变和不同加载速率的滞后回弹实验;为了揭示滞后回弹变化规律的微观机理,采用OM和TeM对微观组织进行表征。结果表明:TC4钛合金经过室温塑性变形卸载后尺寸继续变化,... 详细信息

为了探明TC4钛合金室温下的滞后回弹效应,采用万能试验机进行了不同预应变和不同加载速率的滞后回弹实验;为了揭示滞后回弹变化规律的微观机理,采用OM和TeM对微观组织进行表征。结果表明:TC4钛合金经过室温塑性变形卸载后尺寸继续变化,具有明显的滞后回弹效应。随着预应变以及加载应变率的提高,滞后回弹应变(TDSS)的绝对值均呈现指数增长。组织分析表明,"流线型"光镜组织、位错塞积以及孪晶组织的演变与滞后回弹变化规律正相关。

关键词： TC4钛合金拉伸变形滞后回弹变形孪晶

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