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The improvement of an object-oriented classification using multi-temporal MODIs EVI satellite data

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International Journal of Digital Earth 2009年第3期2卷 219-236页

作者： y.Gao J.-F.Mas A.Navarrete Centro de Investigaciones en Ecosistemas-Universidad Nacional Autonoma de Mexico(UNAM) Antigua Carretera a Pa tzcuaro No.8701Col.Ex Hacienda de San Jose de la Huerta C.P.58190 MoreliaMichoacanMexico Centro de Investigaciones en Geografıa Ambiental-Universidad Nacional Autonoma de Mexico(UNAM) Antigua Carretera a Pa tzcuaro No.8701Col.Ex Hacienda de San Jose de la Huerta C.P.58190 MoreliaMichoacanMexico

This paper investigates the contribution of multi-temporal enhanced vegetation index(EVI)data to the improvement of object-based classification accuracy using multi-spectral moderate resolution imaging spectral-radiometer(MODIs)*** object-oriented classification,similar pixels are firstly grouped together and then classified;the produced result does not suffer the speckled appearance and closer to human *** data are from the MODIs sensor aboard Terra spacecraft.69 EVI data(scenes)were collected during the period of three years(20012003)in a mountainous vegetated *** data sets were used to study the phenology of the land cover *** land cover types show distinct fluctuations over time in EVI values and this information might be used to improve object-oriented land cover *** experiments were carried out:one was only with single date MODIs multispectral data,and the other one including also the 69 EVI *** classes were distinguished:temperate forest,tropical dry forest,grassland,irrigated agriculture,rain-fed agriculture,orchards,lava flows and human *** two classifications were evaluated with independent verification data,and the results showed that with multitemporal EVI data,the classification accuracy was improved 5.2%.Evaluated by McNemar’s test,this improved was significant,with significance level p=0.01.

关键词： enhanced vegetation index(EVI) moderate resolution imaging spectral-radiometer(MODIs) phenology object-based image classification

Targeting gut microbiota in hepatocellular carcinoma: probiotics as a novel therapy

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Hepatobiliary surgery and Nutrition 2018年第1期7卷 11-20页

作者： Murphy L.y.Wan Hani El-Nezami school of Biological sciences Faculty of ScienceThe University of Hong KongPokfulamHong KongChina Institute of Public Health and Clinical Nutrition University of Eastern FinlandKuopioFinland

Hepatocellular carcinoma(HCC),the most common primary liver cancer,is one of the dreaded complications of chronic liver *** experimental and clinical studies have revealed that the alteration of gut-liver axis plays a pivotal role in the onset of chronic liver diseases,including *** gut microbiota and endotoxemia are increasingly recognized as critical components in promoting the progression of chronic liver diseases to *** have been suggested as a novel,safe and cost-effective approach to prevent or treat *** by which probiotics exerts their anti-cancer effects include their ability to bind carcinogens,modulation of gut microbiota,improvement of intestinal barrier function,and *** review summarizes the literature findings of the changes in gut microbiota linked to HCC,and discusses the possible therapeutic implications of probiotics for HCC.

关键词： Endotoxemia gut-liver axis gut microbiota hepatocellular carcinoma(HCC) probiotics

Transference of Love-type waves in a bedded structure containing a functionally graded material and a porous piezoelectric medium

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Applied Mathematics and Mechanics(English Edition) 2019年第8期40卷 1083-1096页

作者： s.MONDAL s.A.sAHU K.K.PANKAJ Department of Applied Mathematics Indian Institute of Technology (ISM)

The frequency of the Love-type surface waves in a bedded structure con- sisting of a porous piezoelectric (PP) medium and a functionally graded material (FGM) substrate is approximated. The FGM layer is assumed to have a constant initial stress. The Wentzel-Kramers-Brillouin (WKB) approximation technique is used for the wave solution in the FGM layer, and the method of separation of variables is applied for the solution in the porous piezoelectric medium. The dependence of the wave frequency on the wave number is obtained for both electrically open and short cases. The effects of the gradient coefficient of the FGM layer, the initial stresses (tensile stress and compressive stress), and the width of the FGM layer are marked distinctly and shown graphically. The findings may contribute towards the design and optimization of acoustic wave devices.

关键词： porous piezoelectric (PP) material functionally graded material (FGM) Love-type wave Wentzel-Kramers-Brillouin (WKB) approximation

Nature of urban interventions in changing the old center of a globalizing Doha

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Frontiers of Architectural Research 2014年第4期3卷 468-476页

作者： Remah y. Gharib Ashraf M. salama Qatar Faculty of Islamic studies Hamad Bin Khalifa University Education City Qatar Foundation DohaQatar University of strathclyde Glasgow Scotland

Doha, Qatar is continuously positioning itself at the forefront of international urbanism with different qualities of expression in terms of economy, culture, and global outlook, and is characterized by fast-tracked urban development process with large-scale urban interventions in the old center. Although the unprecedented urban growth of this city continues to be a subject of discussion, little attention has been given to investigate the new interventions and the resulting effects they have on the old center. This study aims to examine three important urban interventions, namely, the Museum of Islamic Art, the reconstruction of the traditional market called souq Waqif, and the Msheireb urban regeneration project. It examines local and global issues, universal standard practices, and traditional knowledge. This study employs a descriptive analysis of these interventions to explore the impact of change in the old center, exemplified by socio-spatial and typo-morphological aspects. Reference is made to a number of empirical studies, including behavioral mapping, GIs population statistics, and analysis of historical maps. Results analytically narrate the reactions of these interventions to the possibility of simultaneously adopting universal practices with local knowledge, and whether prioritizing local influences would represent narrow-mindedness in shaping the city.

关键词： Doha Old center Urban intervention Change socio-spatial impacts Typo-morphotogical impacts

Modeling of semi-rigid beam-to-column steel joints under extreme loading

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Frontiers of structural and Civil Engineering 2013年第3期7卷 245-263页

作者： C FANG B A IZZUDDIN A y ELGHAZOULI D A NETHERCOT Department of Civil&Environmental Engineering Imperial College LondonLondon SW72AZUnited Kingdom

Joints play an important role in providing ductility for steel-composite structures subject to extreme loading conditions,such as blast,fire and *** to sound energy dissipation capability and fabrication efficiency,semi-rigid joints have increasingly received attention during the last *** paper presents a component approach for modeling semi-rigid beam-to-column joints based on Eurocode3,where the post-elastic response,including component strain hardening and ultimate rotational capacity,is also *** criteria are defined based on the ultimate deformation capacity of components and *** model enables a direct integration of joint response into global frame models with the consideration of axial deformability,such that the interaction between bending moment and axial force within the joints can be realistically *** addition,elevated temperature can be considered in the joint model via the degradation of the component *** comparisons with available test data,the joint model is shown to have good accuracy,and the failure criteria are found to be reliable yet *** strain hardening response of components is shown to have significant influence on the ultimate bending capacity of the joints,while neglecting it usually leads to a conservative prediction.

关键词： semi-rigid joint component method ductility elevated temperature

A Genetic Algorithm to solve Capacity Assignment Problem in a Flow Network

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Computers, Materials & Continua 2020年第9期64卷 1579-1586页

作者： Ahmed y.Hamed Monagi H.Alkinani M.R.Hassan Department of Computer science Faculty of Computers and InformationSohag UniversitySohag82524Egypt Department of Computer science and Artificial Intelligence College of Computer Science and EngineeringUniversity of JeddahJeddah21959Saudi Arabia Department of Mathematics and Computer science Faculty of ScienceAswan UniversityAswan81528Egypt

Computer networks and power transmission networks are treated as capacitated flow networks.A capacitated flow network may partially fail due to ***,the capacity of each edge should be optimally assigned to face critical situations-i.e.,to keep the network functioning normally in the case of failure at one or more *** robust design problem(RDP)in a capacitated flow network is to search for the minimum capacity assignment of each edge such that the network still survived even under the edge’s *** RDP is known as ***,capacity assignment problem subject to system reliability and total capacity constraints is studied in this *** problem is formulated mathematically,and a genetic algorithm is proposed to determine the optimal *** optimal solution found by the proposed algorithm is characterized by maximum reliability and minimum total *** numerical examples are presented to illustrate the efficiency of the proposed approach.

关键词： Flow network capacity assignment network reliability genetic algorithms

Hepatology|肠源性IL-33双重调控缺氧诱导因子1α信号促进三甲胺-N-氧化物生成并加重代谢相关脂肪性肝病进展

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临床肝胆病杂志 2024年第9期40卷 1766-1766页

作者：海素平华中科技大学同济医学院附属同济医院

代谢相关脂肪性肝病(MAsLD)是一种以肝脂质异常沉积为特征,同时伴随心脏代谢危险因素的代谢性疾病,现已成为全世界最常见的慢性肝病。MAsLD的发展与肠道稳态的失衡紧密相连,紊乱的肠道菌群及其代谢物通过受损的肠道屏障到达肝脏,引起肝... 详细信息

代谢相关脂肪性肝病(MAsLD)是一种以肝脂质异常沉积为特征,同时伴随心脏代谢危险因素的代谢性疾病,现已成为全世界最常见的慢性肝病。MAsLD的发展与肠道稳态的失衡紧密相连,紊乱的肠道菌群及其代谢物通过受损的肠道屏障到达肝脏,引起肝脏的代谢紊乱和炎症。

关键词：脂肪性肝病缺氧诱导因子1α 慢性肝病肠源性代谢性疾病肠道屏障三甲胺肠道稳态

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Determination of specificity influencing residues for key transcription factor families

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Frontiers of Electrical and Electronic Engineering in China 2015年第3期10卷 115-123页

作者： Ronak y Patel Christian Garde Gary D stormo Department of Genetics School of Medicine Washington University St. Louis MO 63108 USA. Center for Biological sequence Analysis Department of Systems Biology Technical University of Denmark Kgs. Lyngby DK 2800 Denmark.

Transcription factors （TFs） are major modulators of transcription and subsequent cellular processes. The binding of TFs to specific regulatory elements is governed by their specificity. Considering the gap between known TFs sequence and specificity, specificity prediction frameworks are highly desired. Key inputs to such frameworks are protein residues that modulate the specificity of TF under consideration. simple measures like mutual information （MI） to delineate specificity influencing residues （sIRs） from alignment fail due to structural constraints imposed by the three-dimensional structure of protein. structural restraints on the evolution of the amino-acid sequence lead to identification of false sIRs. In this manuscript we extended three methods （direct information, PsICOV and adjusted mutual information） that have been used to disentangle spurious indirect protein residue-residue contacts from direct contacts, to identify sIRs from joint alignments of amino-acids and specificity. We predicted sIRs for homeodomain （HI））, helix-loop-helix, LacI and GntR families of TFs using these methods and compared to MI. Using various measures, we show that the performance of these three methods is comparable but better than MI. Implication of these methods in specificity prediction framework is discussed. The methods are implemented as an R package and available along with the alignments at http：//***/specPred.

关键词： protein-DNA interactions residue co-variance motifs co-evolution feature selection direct information specificity determinants

Building theoretical pictures from phenomenology:mechanics of polymers above and below Tg

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Building theoretical pictures from phenomenology:mechanics o...