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A Fractal measure of Spatial Association between Landslides and Conditioning Factors

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Journal of Earth Science 2017年第4期28卷 588-594页

作者： Renguang Zuo Emmanuel john m.Carranza State Key Laboratory of Geological Processes and mineral Resources China University of Geosciences Institute of Geosciences State University of Campinas (Uni Camp)

measuring the relative importance and assigning weights to conditioning factors of land- slides occurrence are significant for landslide prevention and/or mitigation. In this contribution, a fractal method is introduced for measuring the spatial relationships between landslides and condition- ing factors （such as faults, rivers, geological boundaries, and roads）, and for assigning weights to condi- tioning factors for mapping of landslide susceptibility. This method can be expressed as p=C~, where d is the fractal dimension, and C is a constant. This relationship indicates a fractal relation between land- slide density （p） and distances to conditioning factors （6）. The case of d〉0 suggests a significant spatial correlation between landslides and conditioning factors. The larger the d （〉0） value, the stronger the spatial correlation is between landslides and a specific conditioning factor. Two case studies in South China were examined to demonstrate the usefulness of this novel method.

关键词： geological hazard landslides fractal spatial statistic.

Post-VmS mineralization deformations （1880-1820 ma） of the Skellefte district （Sweden）： insights from the spatial pattern of VmS occurrences

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Frontiers of Earth Science 2014年第3期8卷 319-324页

作者： Emmanuel john m. CARRANZA martiya SADEGHI School of Earth and Environmental Sciences James Cook University Townsville Queensland 4811 Australia Geological Survey of Sweden Villav/igen 18 Uppsala Sweden

In the last two to three decades or so, the spatial pattern of mineral occurrences of a deposit-type has been studied to derive insights to mineralization controls and assist mineral exploration. In the Skellefte district, Fry plots of volcanogenic massive sulfide （VmS） mines/ prospects reveal patterns that are likely due to post- mineralization deformation events. The fractal dimensions of the spatial patterns of the present-day VmS mines/ prospects and that of the ＇original＇ VmS deposits support the concept that spatial patterns of mineral deposits are spatially-invariant. Therefore, analysis of the spatial pattern of mineral deposits is useful not only in research about pre- and syn-mineralization geological settings but also post-mineralization geological settings.

关键词： fractal Fry analysis mineral deposits structural history orogenic belts

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The omentum

World Journal of Gastroenterology 2000年第2期6卷 169-176页

作者： Cameron Platell Deborah Cooper john m.Papadimitriou john C.Hall Department of Surgery the University of Western Australia Departments of Pathology the University of Western Australia

INTRODUCTIONThe word omentum derives from the ancientEgyptians who,when embalming human bodies,used to assess their'omens'by looking at thevariations in what we recognise today as ***(128-199 AD)thought that therole of the omentum was to warm the *** was on the basis of a gladiator who had anomental resection after a stab injury and sufferedgreatly from cold for the rest of his life.A

关键词： omentum peritonitis macrophage neutrophil lymphocytes mesothelium adhesions omentectomy

Prof. john Chabot: working hard and asking important questions, but also keeping focused

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Hepatobiliary Surgery and Nutrition 2020年第2期9卷 269-270页

作者： john Chabot 不详

Expert's introduction *** Chabot(Figure 1)received his medical degree from Dartmouth College School of medicine and completed a residency in General Surgery at Columbia Presbyterian medical Center and a fellowship in Surgery at Dartmouth-Hitchcock medical *** joined New York-Presbyterian/Columbia in 1983 and has since become Professor of Surgery and Executive Director of the Pancreas Center and Chief of Gastrointestinal/Endocrine ***’s clinical interest is focused on the prevention,treatment,and cure of cancers involving the gastrointestinal tract(especially pancreatic cancer)and other areas of surgical oncology such as the surgical treatment of thyroid cancer and mesothelioma of the *** has published extensively in leading medical journals including Pancreas,Journal of Clinical Oncology,Journal of Gastrointestinal Surgery,and other notable *** also actively leads Columbia Doctors in responding to the challenges associated with rapid innovation,advancing technology,and the highly informed *** has received numerous awards during his career,including the Jerry Gliklich Practitioner of the Year Award,Teaching Award in Surgery for Excellence in Teaching and mentoring,and has been named multiple times as one of New York magazine’s Top Doctors.

关键词： Surgery prevention Figure

A new design approach for the established flow region of vertical,dilute-phase pneumatic conveyors

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Particuology 2022年第7期20卷 10-20页

作者： john m.Wheeldon Jan Baeyens Shuo Li Yimin Deng European Powder and Process Technology Longfellow DriveKetteringUnited Kingdom KU Leuven Department of Chemical EngineeringProcess and Environmental Technology LabJ.De Nayerlaan 52860 Sint-Katelijne-WaverBelgium Beijing University of Chemical Technology Beijing Advanced Centre of Smart Matter Science and EngineeringBeijingChina

An analysis has been completed for a comprehensive set of vertical,dilute-phase pneumatic conveying pressure drop data from an investigation by *** data were collected in the established flow region for eight different materials conveyed in 0.05-,0.10-,0.20-m internal diameter,20-m tall steel *** velocities derived from the pressure drop data were used to develop an equation of motion that includes terms for pipe diameter,terminal velocity,coefficient of restitution,and particle *** best data fit was achieved using the actual gas density and the actual gas velocity adjusted for *** the terminal velocity for voidage,an approach recommended by many investigators,did not improve the fit for reasons identified by the present *** the equation of motion,particle velocities were predicted and used to calculate total pressure drops that are within±15%of the measured *** calculated values also produce the characteristic trough-shaped total pressure drop curves allowing the minimum pressure drop gas velocity to be determined without recourse to a separate correlation.A comparison with other studies using shorter risers indicates that data from these studies likely include acceleration effects.A separate study will investigate this observation further.

关键词： Dilute-phase Vertical Pneumatic conveying Design equations Pressure drops

Toward a self-driving ultrafast fiber laser

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Light(Science & Applications) 2020年第1期9卷 1757-1759页

作者： Fanchao meng john m.Dudley Universite Bourgogne Franche-Comte Institut FEMTO-ST UMR 6174BesançonFrance

Femtosecond pulses from an ultrafast mode-locked fiber laser can be optimized in real time by combining single-shot spectral measurements with a smart genetic algorithm to actively control and drive the intracavity dy... 详细信息

关键词： fiber laser Femto

Contemporary approaches to visual prostheses

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military medical Research 2019年第3期6卷 254-262页

作者： Rebecca m.mirochnik john S.Pezaris Department of Bioengineering Northeastern UniversityBostonMAUSA Department of Neurosurgery Massachusetts General HospitalBostonMAUSA.3Department of NeurosurgeryHarvard MedicalSchoolBostonMAUSA.

Visual prostheses serve to restore visual function following acquired blindness. Acquired blindness(as opposed to congenital blindness) has many causes, including diseases such as retinitis pigmentosa, glaucoma, and macular degeneration, or trauma such as caused by automobile accident or blast damage from explosions. many of the blindness-causing diseases target the retina or other ocular structure. Often, despite the loss of sensitivity to light, the remainder of the visual pathway is still functional, enabling electrical devices to deliver effective and meaningful visual information to the brain via arrays of electrodes. These arrays can be placed in any part of the early visual pathway, such as the retina, optic nerve, lateral geniculate nucleus, or visual cortex. A camera or other imaging source is used to drive electrical stimulation of remaining healthy cells or structures to create artificial vision and provide restoration of function. In this review, each approach to visual prostheses is described, including advantages and disadvantages as well as assessments of the current state of the art. most of the work to-date has been targeting stimulation of(a) the retina, with three devices approved for general use and two more in clinical testing;(b) the lateral geniculate nucleus, with efforts still in the pre-clinical stage;and(c) the cortex, with three devices in clinical testing and none currently approved for general use despite the longest history of investigation of the three major approaches. Each class of device has different medical indications, and different levels of invasiveness required for implantation. All contemporary devices deliver relatively poor vision. There has been remarkable progress since the first proof-ofconcept demonstration that used stimulation of the primary visual cortex, with the field exploring all viable options for restoration of function. much of the progress has been recent, driven by advances in microelectronics and biocompat

关键词： Visual prosthesis Blindness Artificial vision

TRS Scheduling for Improved QoS Performance in Cloud System

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Computers, materials & Continua 2023年第4期75卷 1547-1559页

作者： G.john Samuel Babu m.Baskar Department of Computer Science and Engineering School of ComputingCollege of Engineering and TechnologySRM Institute of Science and TechnologyKattankulathurChengalpattuTamilnadu603203India Department of Computing Technologies School of ComputingCollege of Engineering andTechnologySRM Institute of Science and TechnologyKattankulathurChengalpattuTamilnadu603203India

Numerous methods are analysed in detail to improve task schedulingand data security performance in the cloud environment. The methodsinvolve scheduling according to the factors like makespan, waiting time,cost, deadline, and popularity. However, the methods are inappropriate forachieving higher scheduling performance. Regarding data security, existingmethods use various encryption schemes but introduce significant serviceinterruption. This article sketches a practical Real-time Application CentricTRS (Throughput-Resource utilization–Success) Scheduling with Data Security(RATRSDS) model by considering all these issues in task scheduling anddata security. The method identifies the required resource and their claim timeby receiving the service requests. Further, for the list of resources as services,the method computes throughput support (Thrs) according to the number ofstatements executed and the complete statements of the service. Similarly, themethod computes Resource utilization support (Ruts) according to the idletime on any duty cycle and total servicing time. Also, the method computesthe value of Success support (Sus) according to the number of completions forthe number of allocations. The method estimates the TRS score (ThroughputResource utilization Success) for different resources using all these supportmeasures. According to the value of the TRS score, the services are rankedand scheduled. On the other side, based on the requirement of service requests,the method computes Requirement Support (RS). The selection of service isperformed and allocated. Similarly, choosing the route according to the RouteSupport measure (RSm) enforced route security. Finally, data security hasgets implemented with a service-based encryption technique. The RATRSDSscheme has claimed higher performance in data security and scheduling.

关键词： Cloud task scheduling TRS quality of service RSm route security data security SDE RATRSDS

Nonuniform Dependence on the Initial Data for Solutions of Conservation Laws

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Communications on Applied mathematics and Computation 2024年第1期6卷 489-500页

作者： john m.Holmes Barbara Lee Keyfitz Department of mathematics The Ohio State UniversityColumbusOH43210USA

In this paper,we study systems of conservation laws in one space *** prove that for classical solutions in Sobolev spaces H^(s),with s>3/2,the data-to-solution map is not uniformly *** results apply to all nonlinear s... 详细信息

关键词： Conservation laws Data-to-solution map Nonuniform dependence