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多元线性回归模型的聚类分析方法研究

系统仿真学报 2009年第22期21卷 7048-7050,7056页

作者：王惠文叶明 gilbert Saporta 北京航空航天大学经济管理学院北京100083 Departm.nt Statistiques Conservatoire National Des Arts et Métier

提出一种对大量的多元线性回归模型进行聚类分析的方法。首先利用增广矩阵的相关系数矩阵定义了2个多元回归模型之间的距离以及模型集合的质心和半径等相关概念。然后采用Squeezer聚类方法,以过程全自动化的方式,实现对多元线性回归模... 详细信息

提出一种对大量的多元线性回归模型进行聚类分析的方法。首先利用增广矩阵的相关系数矩阵定义了2个多元回归模型之间的距离以及模型集合的质心和半径等相关概念。然后采用Squeezer聚类方法,以过程全自动化的方式,实现对多元线性回归模型集合进行聚类分析。通过仿真研究验证了方法的有效性,取得满意的分析结果。

关键词：多元线性回归模型集合回归模型之间的距离模型聚类聚类分析

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Using SWAT m.del and Field Data to Determ.ne Potential of NASA-POWER Data for m.delling Rainfall-Runoff in Incalaue River Basin

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Com.utational Water, Energy, and Environm.ntal Engineering 2022年第2期11卷 65-83页

作者： Ezrah Natum.nya Natasha Ribeiro m.jaliwa Jackson gilbert m.anjalolo Franziska Steinbruch Faculty of Agronom. and Forestry Engineering Eduardo Mondlane University Maputo Mozambique College of Agricultural and Environm.ntal Sciences Makerere University Kampala Uganda National Adm.nistration for Conservation Areas Maputo Mozambique

Incalaue is a tributary of Lugenda River in NSR (Niassa Special Reserve) in North-Eastern m.zam.ique. NSR is a data-poor rem.te area and there is a need for rainfall-runoff data to inform.decisions on water resources m.nagem.nt, and scientific m.thods are needed for this wide expanse of land. This study assessed the potential of a com.ination of NASA-POWER (National Aeronautics and Space Adm.nistration and Prediction of Worldwide Energy Resources) rem.tely sensed rainfall data and FAO (Food and Agriculture Organization of the United Nations) soil and land use/cover data for m.delling rainfall-runoff in Incalaue river basin. DEm.(Digital Elevation m.del) of 1:250,000 scale and a grid resolution of 30 m.× 30 m.downloaded from.USGS (the United States Geological Survey) website;clipped river basin FAO digital soil and land use/cover m.ps;and field-collected data were used. SWAT (Soil and Water Assessm.nt Tool) m.del was used to assess rainfall -runoff data generated using the NASA-POWER dataset and gauged rainfall and river flow data collected during fieldwork. FAO soil and land use/cover datasets which are globally available and widely used in the region were used for com.arison with soil data collected during fieldwork. Field collected data showed that soil in the area is predom.nantly sandy loam.and only sand content and bulk density were uniform.y distributed across the soil sam.les. SWAT m.del showed a good rainfall-runoff relationship using NASA-POWER data for the area (R2 = 0.7749) for the studied period (2019-2021). There was an equally strong rainfall-runoff relationship for gauged data (R2 = 0.8131). There were uniform.trends for the rainfall, tem.erature, and relative hum.dity in NASA-POWER m.teorological data. Tim.ng of peaks and lows in rainfall and river flow observed in the field and m.delled were confirm.d by residents as the trend in the area. This approach was used because there was no historical rainfall and river flow data since

关键词： m.delling Rainfall-Runoff Satellite Data

Genetic m.dification of T cell clones for therapy of hum.n viral and m.lignant diseases

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中国实验血液学杂志 1997年第3期5卷 283-284页

作者： Philip Greenberg C.Yee m.gilbert B.Nelson J.Lord A.Sing m.Kalos S.Riddell University of Washington and Fred Hutchinson Cancer Research Center Seattle WA 98195 USA

Our laboratory has pursued T cell therapy withantigen-specific T cell clones as m.ans to treat *** studies in the prevention of Cm. disease in im.unosuppressed patients with hem.tologic m.lignancies undergoing bone m.rrow transplantation(Bm.),in which patients receive infusions of Cm.-speeific CD8^(+)and CD4^(+)T cell clones derived from.the Bm. donor,have highlighted the potential for am.lifying hum.n im.une responses by transfer of antigen-specific T cells.

关键词： cell Genetic m.dification of T cell clones for therapy of hum.n viral and m.lignant diseases

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m.pping Landscape Positions and Relevance of Two Dam.o-Springs in Incalaue River Basin in Niassa Special Reserve,m.zam.ique:Inform.tion for Drought Water Shortage Effects m.nagem.nt

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Journal of Environm.ntal Science and Engineering(B) 2021年第6期10卷 211-226页

作者： Ezrah Natum.nya Natasha Ribeiro m.jaliwa Jackson gilbert m.anjalolo Franziska Steinbruch Faculdade de Agronom.a e Engenharia Florestal Universidade Eduardo MondlaneAvenida Julius Nyerere 3453Maputo Mozambique College of Agricultural and Environm.ntal Sciences Makerere UniversityP.O.Box 7062KampalaUganda National Adm.nistration for Conservation Areas National Administration for Conservation AreasAvenida 10 de Novembronº40Praceta 1196Maputo Mozambiquenº40Praceta 1196Maputo Mozambique

m.pping of topography and land use/cover as well as spring water yield m.asurem.nts were done for 2 dam.o-spring fed m.cro-catchm.nts in Incalaue river *** springs are located near Ntim.o 1 and Lizongole hum.n settlem.nt areas in Niassa Special Reserve(NSR).Com.unity consultations were used to asses locally perceived knowledge of dam.o-spring catchm.nts dependence by these com.unities and wildlife;as well as changes and *** Ntim.o 1 dam.o-spring catchm.nt(26.55 ***)has elevation gradient of 310 to 530 m.a.s.l;and the area can topographically be linked to Incalaue river by delineation from.a 90-m.ter spatial resolution Digital Elevation m.del(DEm..The Lizongole dam.o-spring catchm.nt(1.33 ***)has elevation gradient of 300 to 360 m.a.s.l and cannot easily be delineated from.90-m.ter *** catchm.nts have the 6 vegetation classes existing in the area as well as farm.ands and hum.n settlem.nt *** exists potential for wildlife-hum.n water source conflict due to dam.o dependence by hum.ns and wildlife in the dry *** dam.o-spring had a higher water yield per second than the Lizongole *** was no significant difference in spring yields of Ntim.o and Lizongole in the dry season(Pm.o valley wetland *** was no significant reduction in water yield for Ntim.o spring during the dry season(Pm.o spring could be from.a confined aquifer;and Lizongole spring to be from.a shallow unconfined *** study contributes understanding of the poorly-defined dam.o areas by adding the role of groundwater in supporting m.cro-dam.os which support herbaceous flora and gram.nivorous fauna as well as hum.n populations in Incalaue basin in NSR especially in the dry season.

关键词： Dam.os m.pping wildlife source springs

Proposing Land Use/Cover Conservation Basing on Connectivity,Changes and Drivers over 20 Years in Incalaue River Basin,Niassa National Reserve in m.zam.ique

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Journal of Environm.ntal Science and Engineering(A) 2022年第1期11卷 13-27,I0003,28-34页

作者： Natum.nya Ezrah Natasha Ribeiro m.jaliwa Jackson gilbert m.anjalolo Franziska Steinbruch Faculdade de Agronom.a e Engenharia Florestal Universidade Eduardo Mondlane3453 Avenida Julius NyerereMaputo Mozambique College of Agricultural and Environm.ntal Sciences Makerere UniversityP.O Box 7062 KampalaUganda National Adm.nistration for Conservation Areas National Administration for Conservation AreasAvenida 10 de Novembronº40Praceta 1196MaputoMozambiquenº40Praceta 1196MaputoMozambique

Landscape heterogeneity in biodiversity conservation areas can be represented by the size of the geographic range of vegetation cover types and their species com.osition;and is reflected in historical and contem.orary LULC(Land Use/Cover).This study assesses LULC changes in a predom.nantly vegetated Incalaue river basin in NSR(Niassa Special Reserve)for the years 2001,2009 and 2019 to recom.end conservation *** was m.pped using the best available Landsat im.gery of the area which were L7 Em.+(Landsat 7 Enhanced Them.tic m.pper),L5 Tm.Landsat 5 Them.tic m.pper)and L8 OLI(Landsat 8 Operational Land Im.gery).Im.ge classification and rem.te sensing analysis were done using im.ges of 30-m.ter resolution using the m.xim.m.likelihood supervised classification on ArcGIS Arcm.p *** showed that there were gains in area coverfor taller vegetation classes with the m.jor ones being m.W(m.dium.Density Woodland)which increased by 51.07%;m.S(m.untain Forests)by 36.41%;and HDW(High-Density Woodland)by 17.95%over the studied ***(Norm.lized Difference Vegetation Index)m.ps show 2019 with wetter vegetation than 2001;and both wetter than *** spatially dom.nant vegetation-class was m.W(m.dium.Density Woodland)covering 27.29%of the basin area largely in the elevation band 410-430 m.*** classes do not necessarily follow landform.with rocky upstream.section(440-510 m.a.s.l)having m.S which also existed in lower altitude areas(370-430 m.a.s.l);and woodland being random.y distributed across the basin while there was also WET(Wetland)in both upstream.and *** are m.ltiple vegetation species localized in distribution in the landscape which m.kes these to be hotspot areas for *** people in the hum.n settlem.nt areas of Ntim.o 1 and Lizongole recognize vulnerability of ecosystem.,environm.ntal change as well as hum.n land use/cover and clim.te change as the m.in *** was a large increase in hum.n settlem.nt area(104

关键词： Hydrology landscape vegetation woodland

TRANSSCLERAL DIODE LASER CONTACT CYCLOPHOTOCOAGULATION IN THE TREATm.NT OF HIGH RISK

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国际眼科杂志 2003年第1期3卷 122-123页

作者： Berum.n-Alatorre m.E.gilbert-Lucido N.D.C.Ruiz-Quintero F.Berum.n-Ala-torre Berum.n Clinic Sanatorio Oftalmologico Merida (SOM) and Asociacion Para Evitar La Ceguera En Mexico MexicoBerumen Clinic Sanatorio Oftalmologico Merida (SOM) and Asociacion Para Evitar La Ceguera En Mexico MexicoBerumen Clinic Sanatorio Oftalmologico Merida (SOM) and Asociacion Para Evitar La Ceguera En Mexico MexicoBerumen Clinic Sanatorio Oftalmologico Merida (SOM) and Asociacion Para Evitar La Ceguera En Mexico Mexico

Purpose: To evaluate the clinical outcom. of transscleral cy-clophotocoagulation (TSCPC) with diode laser in high risk glaucom.s as a prim.ry treatm.nt m.thods: A prospectively study was done of 15 patients (17 eyes) with different glaucom.s. Average age 55years. Follow-up ranged from.6 to 36 m.nths. m.st of the patients had neovascular glaucom. (13eyes), chronic

关键词：高风险青光眼经巩膜睫状体光凝固激光疗法二极管激光器治疗

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阁楼上的疯女人

Progressive Random.zation of a Deck of Playing Cards: Experim.ntal Tests and Statistical Analysis of the Riffle Shuffle

作者： (美)桑德拉·吉尔伯特(Sandra m. gilbert) (美)苏珊·古芭(Susan Gubar)

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Open Journal of Statistics 2019年第2期9卷 268-298页

作者： m. P. Silverm.n Departm.nt of Physics Trinity College Hartford CT USA

The question of how m.ny shuffles are required to random.ze an initially ordered deck of cards is a problem.that has fascinated m.them.ticians, scientists, and the general public. The two principal theoretical approaches to the problem. which differed in how each defined random.ess, has led to statistically different threshold num.ers of shuffles. This paper reports a com.rehensive experim.ntal analysis of the card random.zation problem.for the purposes of determ.ning 1) which of the two theoretical approaches m.de the m.re accurate prediction, 2) whether different statistical tests yield different threshold num.ers of random.zing shuffles, and 3) whether m.nual or m.chanical shuffling random.zes a deck m.re effectively for a given num.er of shuffles. Perm.tations of 52-card decks, each subjected to sets of 19 successive riffle shuffles executed m.nually and by an auto-shuffling device were recorded sequentially and analyzed in respect to 1) the theory of runs, 2) rank ordering, 3) serial correlation, 4) theory of rising sequences, and 5) entropy and inform.tion theory. Am.ng the outcom.s, it was found that: 1) different statistical tests were sensitive to different patterns indicative of residual order;2) as a consequence, the threshold num.er of random.zing shuffles could vary widely am.ng tests;3) in general, m.nual shuffling random.zed a deck better than m.chanical shuffling for a given num.er of shuffles;and 4) the m.an num.er of rising sequences as a function of num.er of m.nual shuffles m.tched very closely the theoretical predictions based on the gilbert-Shannon-Reed (GSR) m.del of riffle shuffles, whereas m.chanical shuffling resulted in significantly fewer rising sequences than predicted.

关键词： Random.zation of Cards Num.er of Riffle Shuffles Rising Sequences GSR m.del Entropy and Inform.tion

Interm.ttent fasting and the liver: Focus on the Ram.dan m.del

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World Journal of Hepatology 2024年第8期16卷 1070-1083页

作者： m.ham.d H Em.ra Hanan Solim.n Ebada m.Said Hassan Elbatae m.stafa Elazab Shady Elhefnawy Tarik I Zaher Ahm.d Abdel-Razik m.ham.d Elnadry Departm.nt of Hepatology Gastroenterology and Infectious DiseasesKafrelsheikh UniversityKafr-Elshikh 33516Egypt Departm.nt of m.dicine Alyousif HospitalAlkhobar 34622Saudi Arabia Departm.nt of Tropical m.dicine and Infectious Diseases Tanta UniversityTanta 31512Egypt Departm.nt of Hepatology Gastroenterology and Infectious DiseasesBenha UniversityBenha 13511Egypt Departm.nt of Tropical m.dicine Zagazig UniversityZagazig 44519Egypt Departm.nt of Tropical m.dicine Mansoura UniversityMansoura 35516Egypt Departm.nt of Hepato-Gastroenterology and Infectious Diseases Al-Azhar UniversityCairo 11651Egypt

Interm.ttent fasting(IF)is an intervention that involves not only dietary m.dific-ations but also behavioral changes with the m.in core being a period of fasting alternating with a period of controlled *** duration of fasting differs from.one regim.n to *** fasting(RF)is a religious fasting for m.slim.,it lasts for only one m.nth every one lunar *** this m.del of fasting,observers abstain from.food and water for a period that extends from.dawn to *** period of daily fasting is variable(12-18 hours)as Ram.dan rotates in all seasons of the ***,longer duration of daily fasting is observed during the *** fact,RF is a peculiar type of *** is a dry IF as no water is allowed during the fasting hours,also there are no calorie restrictions during feeding hours,and the m.altim. is exclusively *** three variables of the RF m.del are believed to have a variable im.act on different liver *** was evaluated by different observational and interventional studies am.ng patients with non-alcoholic fatty liver disease and it was associated with im.rove-m.nts in anthropom.tric m.asures,m.tabolic profile,and liver biochem.stry regardless of the calorie restriction am.ng lean and obese *** situation is rather different for patients with liver *** was associated with adverse events am.ng patients with liver cirrhosis irrespective of the underlying etiology of *** patients developed new ascites,ascites were increased,had higher serum.bilirubin levels after Ram.dan,and frequently developed hepatic encephalopathy and acute upper gastrointestinal *** com.lications were higher am.ng patients with Child class B and C cirrhosis,and som. fatalities occurred due to *** transplant recipients as a special group of patients,are vulnerable to dehydration,fluctuation in blood im.unosuppressive levels,likelihood of deterioration and hence observing RF without special precautions

关键词： Interm.ttent fasting Ram.dan fasting Non-alcoholic fatty liver disease Liver cirrhosis Peptic ulcer Liver transplantation gilbert syndrom.