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Confidence Intervals for Relative Intensity of Collaboration(RIC)Indicators

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Journal of Data and Information Science 2022年第4期7卷 5-15页

作者： Joel Emanuel Fuchs Lawrence Smolinsky ronald Rousseau University of Wuppertal Gaußstr.20D-42119 WuppertalGermany Louisiana State University Department of MathematicsBaton RougeLos AngelesUSA University of Antwerp Faculty of Social SciencesMiddelheimlaan 1B-2020 AntwerpBelgium KU Leuven Facultair Onderzoekscentrum ECOOMNaamsestraat 61B-3000 LeuvenBelgium

Purpose:We aim to extend our investigations related to the Relative Intensity of Collaboration(RIC)indicator,by constructing a confidence interval for the obtained ***/methodology/approach:We use Mantel-Haenszel statistics as applied recently by Smolinsky,Klingenberg,and ***:We obtain confidence intervals for the RIC indicatorResearch limitations:It is not obvious that data obtained from the Web of Science(or any other database)can be considered a random *** implications:We explain how to calculate confidence *** indicators are more often than not presented as precise values instead of an approximation depending on the database and the time of *** approach presents a suggestion to solve this ***/value:Our approach combines the statistics of binary categorical data and bibliometric studies of collaboration.

关键词： Contingency tables Confidence intervals Relative intensity of collaboration(RIC) Mantel-Haenszel statistics Science of science

EFFECTS OF RIVER ICE ON STAGE-DISCHARGE RELATIONSHIPS——A CASE STUDY OF THE YELLOW RIVER

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International Journal of Sediment Research 2007年第4期22卷 263-272页

作者： ronald THRING Bryan W. KARNEY Prof. Environmental Engineering University of Northern British Columbia 3333 University Way Prince George BC Canada V2N 4Z9 Prof. Department of Civil Engineering University of Toronto 35 St. George Street Toronto ON Canada M5S 1A4

Using field observations at four gauging stations along the Inner Mongolia Reach of the Yellow River in China, this paper explores effects of the ice on the hydraulics of this river reach for four different conditions, namely: under open channel flow, during ice-running period, the ice-covered period, and the river break-up period. The rating curves were found to be well recognized under open channel situations, but were sometimes poorly defined and extremely variable under ice conditions. The results also show that the water level is insensitive to flowing ice prior to freeze-up. However, significant, but hardly surprising, variations were observed during ice-covered conditions. The rating curves for both the ice covered condition and river ice breakup period are developed and some related hydraulic issues are examined. Additionally, the impacts of the ice accumulation and associated riverbed deformation during ice period on the rating curves are discussed.

关键词： Ice-running period Ice covered period Rating curve Riverbed deformation River ice break-up

Rock creep modeling based on discontinuous deformation analysis

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International Journal of Mining Science and Technology 2013年第5期23卷 757-761页

作者： Gao Yanan Gao Feng Manchu ronald Yeung State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining & Technology Department of Civil Engineering California State Polytechnic University

Creep is one of the major problems of deep underground mining that must be studied theoretically,experimentally,and numerically over a long *** and feld tests are methods which can directly and more accurately describe the engineering practices as compared with ***,these approaches are also time-consuming because creep problem of rock engineering,such as the roadway/tunnel squeezing phenomenon,usually lasts from several months to a few years.A numerical method can be employed to overcome this time-consuming *** discontinuous deformation analysis(DDA)method was originated in 1984 and received considerable attention from geo-engineers and *** current paper discusses the creep calculation methods using the continuous and the discontinuous methods,and proposes a creep analysis method based on *** method proposed in this paper can directly change the stiffness matrix while inheriting the advantages of the original *** this method does not require any changes in the contact part of ***,this method does not have any effect on the open–close iteration and convergence and can solve the creep problem,while maintaining the advantages of the original *** theorized that creep problems are static problems,and based on this,the work using DDA in this study was divided into two parts:(1)addition of a new loop for the original DDA to‘‘discredited’’the total creep time into several time elements,thereby changing the material properties in each time element;and(2)division of each of the time elements by the time steps,similar to the original *** this manner,one creep problem can be solved via assembling of static ***,the method mentioned above is employed to modeling a tunnel *** evolution of the displacement fled and stress feld during creep are analyzed and discussed.

关键词： Creep Deep underground mining DDA Tunnel squeezing

WEAK-DUALITY BASED ADAPTIVE FINITE ELEMENT METHODS FOR PDE-CONSTRAINED OPTIMIZATION WITH POINTWISE GRADIENT STATE-CONSTRAINTS

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Journal of Computational Mathematics 2012年第2期30卷 101-123页

作者： M. Hintermuer Michael Hinze ronald H.W. Hoppe Department of Mathematics Humboldt-University of Berlin Germany Department of Mathematics University of Hamburg Germany Department of Mathematics University of Augsburg Germany and Department of MathematicsUniversity of Houston USA

Adaptive finite element methods for optimization problems for second order linear el- liptic partial differential equations subject to pointwise constraints on the l2-norm of the gradient of the state are considered. In a weak duality setting, i.e. without assuming a constraint qualification such as the existence of a Slater point, residual based a posteriori error estimators are derived. To overcome the lack in constraint qualification on the continuous level, the weak Fenchel dual is utilized. Several numerical tests illustrate the performance of the proposed error *** subject classification： 65N30, 90C46, 65N50, 49K20, 49N15, 65K10.

关键词： Adaptive finite element method A posteriori errors Dualization Low regu-larity Pointwise gradient constraints State constraints Weak solutions.

The R-and AR-indices:Complementing the h-index

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Chinese Science Bulletin 2007年第6期52卷 855-863页

作者： JIN BiHui LIANG LiMing ronald ROUSSEAU Leo EGGHE National Science Library Chinese Academy of Sciences Beijing 100080 China Institute for Science Technology and Society Henan Normal University Xinxiang 453002 China University of Antwerp (UA) IBW B-2610 Wilrijk Belgium KHBO Industrial Sciences and Technology B-8400 Oostende Belgium Universiteit Hasselt (UHasselt) Agoralaan B-3590 Diepenbeek Belgium

Based on the foundation laid by the h-index we introduce and study the R- and AR-indices. These new indices eliminate some of the disadvantages of the h-index, especially when they are used in combina-tion with the h-index. The R-index measures the h-core’s citation intensity, while AR goes one step further and takes the age of publications into account. This allows for an index that can actually in-crease and decrease over time. We propose the pair (h, AR) as a meaningful indicator for research evaluation. We further prove a relation characterizing the h-index in the power law model.

关键词： R指数 AR指数 h指数 g指数出版物引文分析

Detection of leaf structures in close-range hyperspectral images using morphological fusion

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Geo-Spatial Information Science 2017年第4期20卷 325-332页

作者： Gladys Villegas Wenzhi Liao ronald Criollo Wilfried Philips Daniel Ochoa Department of Telecommunications and Information Processing Ghent University-imec Ghent Belgium Facultad de Ingeniería en Eléctrica y Computación ESPOL Polytechnic University Escuela Superior Politécnica del Litoral Guayaquil Ecuador

Close-range hyperspectral images are a promising source of information in plant biology,in particular,for in vivo study of physiological *** this study,we investigate how data fusion can improve the detection of leaf elements by combining pixel reflectance and morphological *** detection of image regions associated to the leaf structures is the first step toward quantitative analysis on the physical effects that genetic manipulation,disease infections,and environmental conditions have in *** tested our fusion approach on Musa acuminata (banana) leaf images and compared its discriminant capability to similar techniques used in remote *** results demonstrate the efficiency of our fusion approach,with significant improvements over some conventional methods.

关键词： Hyperspectral fusion morphology plant biology

Hematology : basic principles and practice /

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Minimum spouting velocity of flat-base spouted fluid bed

2005年

作者： Hoffman ronald

来源：畅想之星图书光盘版（南... 评论

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Particuology 2018年第1期16卷 27-36页

作者： Esmail R. Monazam ronald W. Breault Justin Weber Ky Layfield National Energy Technology Laboratory U. S. Department of Energy 3610 Collins Ferry Rd. Morgantown WV26507-0880 USA REM Engineering Services PLLC 3537 Collins Ferry Rd. Morgantown WV26505 USA

Experiments were performed on spout characteristics of a cylindrical spout-fluidized bed （I.D. = 10 cm） with different static heights and two materials （A1203 and high density polyethylene）. Results of minimum spouting velocity obtained in this study were compared with reported correlations for both spouted and spout-fluidized beds. Considerable discrepancies were found between the values obtained using different model equations as well as with respect to experimental results. Based on the Mathur-Gishler correlation, a new correlation is proposed for calculating the minimum spouting velocity that introduces the ratio U/Umf. It was found that the minimum spouting velocity decreases with increasing fluidizing gas velocity （U/Umf）. The pressure drop at the point of minimum spouting velocity is also correlated using this dimensionless group and is presented in this work. This investigation demonstrates that the use of correlations reported in the literature that focus primarily on conical bottom spouted beds are not applicable to fiat-bottom spouted and spout-fluidized beds.

关键词： Spouted bed Spout-fluidized bed Minimum spouting velocity Flat-bottom spouted bed

Probability and Statistics : With Integrated Software Routines

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