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DC Programming Algorithm for Clusterwise Linear L1 Regression

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Journal of the Operations Research Society of China 2017年第2期5卷 233-256页

作者： Adil m.Bagirov Sona Taheri Faculty of Science and Technology Federation University AustraliaBallaratAustralia

The aim of this paper is to develop an algorithm for solving the clusterwise linear least absolute deviations regression *** problem is formulated as a nonsmooth nonconvex optimization problem,and the objective function is represented as a difference of convex *** conditions are derived by using this *** algorithm is designed based on the difference of convex representation and an incremental *** proposed algorithm is tested using small to large artificial and real-world data sets.

关键词： Clusterwise regression Nonsmooth optimization Smoothing Incremental algorithm

Improvements in Inversion of magnetic Resonance Exploration-Water Content, Decay Time, and Resistivity

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Journal of China University of Geosciences 2009年第3期20卷 592-605页

作者： Ugur Yaramanci mike müller-Petke Leibniz Institute of Applied Geophysics Stilleweg 2 Hannover D-30655 Germany Berlin University of Technology Ackerstrasse 71-76 Berlin D-13355 Germany

In this review article, we present recent developments and improvements in magnetic resonance sounding （mRS）, a newly established geophysical exploration method that provides unique information about hydrogeophysical properties due to its direct sensitivity to hydrogen protons and proton dynamics. Starting with the most sophisticated and complete mRS formulation, we give a detailed view on how to solve the equation, i.e., inverting exactly for all model parameters： water content, decay time, and resistivity. Giving a short review of general inversion schemes used in geophysics, the special properties of mRS inversion are evaluated and the development of mRS inversion over recent years is shown. We present the extension of mRS to magnetic resonance tomography （mRT）, i.e., the extension to two-dimensional investigations and appropriate inversions. Finally, we address restrictions, limitations, and inconsistencies as well as future developments.

关键词： magnetic resonance sounding (mRS) magnetic resonance tomography (mRT) inversion modeling water content decay time resistivity.

The threshold for a stochastic within-host CHIKV virus model with saturated incidence rate

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International Journal of Biomathematics 2021年第6期14卷 141-172页

作者： C.Gokila m.Sambath Department of mathematics Periyar University Salem 636011India

This paper deals with stochastic Chikungunya(CHIKV)virus model along with saturated incidence *** show that there exists a unique global positive solution and also we obtain the conditions for the disease to be *** also discuss about the existence of a unique ergodic stationary distribution of the model,through a suitable Lyapunov *** stationary distribution validates the occurrence of disease;through that,we find the threshold value for prevail and disappear of disease within *** the help of numerical simulations,we validate the stochastic reproduction number Rq as stated in our theoretical findings.

关键词： Chikungunya infection model extinction threshold stationary distribution

Axisymmetric Stagnation-Point Flow of Nanofluid Over a Stretching Surface

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Advances in Applied mathematics and mechanics 2014年第2期6卷 220-232页

作者： m.Nawaz T.Hayat Department of Humanities and Sciences Institute of Space Technology P.O.Box 2750Islamabad 44000Pakistan Department of mathematics Quaid-i-Azam University 45320 Islamabad 44000Pakistan Department of mathematics Faculty of SciencesKing Abdulaziz UniversityJeddah 80253Saudi Arabia

This paper investigates the laminar boundary layer flow of nanofluid induced by a radially stretching *** model exhibiting Brownian motion and thermophoresis is *** solutions for a reduced system of nonlinear ordinary differential equations are obtained by homotopy analysis method(HAm).Comparative study between the HAm solutions and previously published numerical results shows an excellent ***,temperature and mass fraction are displayed for various values of *** local skin friction coefficient,the local Nusselt number and the local Sherwood number are *** is observed that the presence of nanoparticles enhances the thermal conductivity of base *** is found that the convective heat transfer coefficient(Nusselt number)is decreased with an increase in concentration of nanoparticles whereas Sherwood number increases when concentration of nanoparticles in the base fluid is increased.

关键词： Nanofluid axisymmetric flow stagnation point Nusselt number Sherwood number

Ensemble Based Learning with Accurate motion Contrast Detection

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Intelligent Automation & Soft Computing 2023年第2期35卷 1657-1674页

作者： m.Indirani S.Shankar Hindusthan College of Engineering and Technology Coimbatore641032India

Recent developments in computer vision applications have enabled detection of signiﬁcant visual objects in video *** quoted in literature have detected objects from video streams using Spatiotemporal Particle Swarm Optimization(SPSOm)and Incremental Deep Convolution Neural Networks(IDCNN)for detecting multiple ***,the study considered opticalﬂows resulting in assessing motion *** methods have issue with accuracy and error rates in motion contrast ***,the overall object detection performance is reduced signiﬁ***,consideration of object motions in videos efﬁciently is a critical issue to be *** overcome the above mentioned problems,this research work proposes a method involving ensemble approaches to and detect objects efﬁciently from video *** work uses a system modeled on swarm optimization and ensemble learning called Spatiotemporal Glowworm Swarm Optimization model(SGSOm)for detecting multiple signiﬁcant objects.A steady quality in motion contrasts is maintained in this work by using Chebyshev distance *** proposed system achieves global optimization in its multiple object detection by exploiting spatial/temporal cues and local *** experimental results show that the proposed system scores 4.8%in mean Absolute Error(mAE)while achieving 86%in accuracy,81.5%in precision,85%in recall and 81.6%in F-measure and thus proving its utility in detecting multiple objects.

关键词： multiple signiﬁcant objects ensemble based learning modiﬁed pooling layer based convolutional neural network spatiotemporal glowworm swarm optimization model

Phylogenetic relationships of five genera of Xylariales and Rosasphaeria ***.(Hypocreales)

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Fungal Diversity 2012年第1期52卷 75-98页

作者： Walter m.Jaklitsch Hermann Voglmayr Department of Systematic and Evolutionary Botany Faculty Centre of BiodiversityUniversity of ViennaRennweg 141030 WienAustria

Eight inconspicuous non-stromatic perithecial fungi immersed in plant tissue are assessed with respect to their morphology,ecology and phylogenetic *** is laid on two genera now and then placed in the family Hyponectriaceae,Xylariales:Leiosphaerella with its type species *** occurring on Vaccinium,and Pseudomassaria with its type species *** occurring on *** molecular phylogenetic analyses of LSU and ITS sequences,the generic types of these genera are closely related,but their familial affiliation within Xylariales remains *** sepincoliformis clusters with ***,whereas *** is not congeneric with Pseudomassaria and *** is combined in Leiosphaerella despite its *** species thought to belong to Leiosphaerella are re-assessed:*** that occurs on Rosa,is disposed in the new genus Rosasphaeria,which is close to Eucasphaeria in the Niessliaceae(Hypocreales),according to multi-gene phylogenetic analyses(ITS,LSU,rpb2 and tef1).For *** the genus Pseudomassariella is revived.A Leiosphaerellalike fungus on Lycopodium is described as the new species monographella *** addition the phylogenetic relationships of two fungi forming superficial stromata are here clarified:Collodiscula japonica belongs to the Xylariaceae,while melogramma campylosporum may currently be interpreted as representing a family of its own,the melogrammataceae.

关键词： Collodiscula Eucasphaeria.Leiosphaerella massarina melogramma metasphaeria New genus Phylogenetic reconstruction Pseudomassaria Pseudomassariella Systematics

Spontaneous combustion liability of coal and coal-shale: a review of prediction methods

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International Journal of Coal Science & Technology 2019年第2期6卷 151-168页

作者： m.Onifade B.Genc The School of mining Engineering University of the Witwatersrand P.O. WITS Johannesburg 2050 South Africa

This study presents a review of the various methods to predict the spontaneous combustion liability of coal and coal-shale. The relative propensity of coal to undergo self-heating can be established by different methods. These methods are well established in their usage, but the fact that no particular test method has become a standard to predict the spontaneous combustion liability indicates that doubt still exists as to the validity of all of them. The underlying principle of all the tests is that the more readily the coal undergoes exothermic oxidation, the more liable it is to self-heat. Comprehensive studies that centres on the international position on research being conducted by academics, different research institutes and industries on spontaneous combustion of coal and coal mine fires were evaluated. Relationships between the geochemical analysis (proximate and ultimate analysis, forms of sulphur, petrographic properties, X-ray diffraction and X-ray fluorescence) and spontaneous combustion testing methods (numerical and experimental approaches) used to predict the spontaneous combustion liability of coal were reviewed. The combination of these tests provides a better understanding of the mechanism that controls the spontaneous combustion phenomena. However, irrespective of the extensive studies that have been conducted over time, spontaneous combustion is still a major problem in the coal value chain.

关键词： Coalfields Spontaneous combustion liability macerals Numerical and geochemical analysis

Editorial Announcement： Withdrawal of Chin. Phys. Lett. 24 （2007）1821 by m. Aygun et al.

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Chinese Physics Letters 2008年第8期25卷 3094-3094页

作者： Aygun, m.

Galectins dysregulation: A way for cancer cells to invade and pervade

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Oncology Research 2022年第3期30卷 129-135页

作者： mAHmOUD m.ABDELFATTAH REHAm HELWA molecular Cancer Biology Group Zoology DepartmentFaculty of ScienceAin Shams UniversityCairoEgypt Faculty of Basic Science King Salman International UniversitySouth SinaiEgypt

Galectins are sticky molecules that bind toβ-*** interactions render them essential players in many cellular *** imbalance of galectin expression was reported in many *** cancer,galectins interact with the extracellular matrix,evade the immune system,and potentially have broad interactions with blood *** the last ten years,since 2010,we did focus on galectin research in different cancer ***ﬁndings showed an interaction between cancer cells and erythrocytes via ***,we found that upregulation of galectins was associated with lymph node metastasis in ovarian ***,with this,we shortly review some important aspects of galectins and their potential importance in more profound understanding of cancer progression and theﬁeld of cancer biomarkers.

关键词： Galectins Cancer metastasis Erythrocytes Invasion