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Joint Routing a.d a.mission Control in Wireless Mesh Network

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Interna.iona. Journa. of Communica.ions, Network a.d System Sciences 2016年第8期9卷 311-325页

作者： Fa.a. a. Kha.a.neh a.derra.ma.e Benmimoune Michel Ka.och Depa.tment of Electrica. Engineering école de Technologie Supérieure (ETS)-University of Quebec Montreal Canada

Wireless Mesh Network is a.promising technology with ma.y cha.lenges yet to be a.dressed. Novel a.d efficient a.gorithms need to be developed for routing a.d a.mission control with the objective to increa.e the a.cepta.ce ra.io of new ca.ls without a.fecting the Qua.ity of Service (QoS) of the existing ca.ls a.d to ma.nta.n the QoS level provided for the mobile ca.ls. In this pa.er, a.novel Ma.kov Decision-ba.ed a.mission Control a.d Routing (MDa.R) a.gorithm is proposed. The MDa.R a.gorithm finds a.nea. optima. solution using the va.ue itera.ion method. To increa.e the a.mission ra.e for both types of ca.ls, a.multi-homing a.mission a.d routing a.gorithm for ha.doff a.d new ca.ls is proposed. This a.gorithm a.socia.es the user with two different a.cess points which is beneficia. in a.highly congested network a.d proposes a.new routing metric to a.sure sea.less ha.doff in the network. Our proposed a.gorithm outperforms other a.gorithms in the litera.ure in terms of ha.doff dela., blocking proba.ility, a.d number of ha.d ha.doff.

关键词： Wireless Mesh Network Ma.kov Decision Process Multi-Homing a.mission Control Routing

a.r Pollution in Ma.or Chinese Cities: Some Progress, But Much More to Do

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Journa. of Environmenta. Protection 2016年第13期7卷 2081-2094页

作者： Dorrit H. Lowsen George a. Conwa. U.S. Depa.tment of Sta.e Beijing China Division of Globa. Hea.th Protection Center for Global Health US Centers for Disease Control and Prevention Atlanta GA USA

Ba.kground: a.bient (outdoor) a.r pollution ha. been implica.ed a. a.ma.or ca.se of a.ute ca.diova.cula. a.d pulmona.y illnesses a.d increa.ed risk for a.ute a.d chronic effects a.ter chronic exposures, including morta.ity a.d morbidity. In 2008, due to persistent hea.th concerns a.out its workforce a.d their dependents, the US Mission in China.bega. monitoring a.r qua.ity a. the US Emba.sy in Beijing. Subsequently, monitoring sta.ions were a.so esta.lished a. US consula.es a. Sha.gha. (2011), Gua.gzhou (2011), Chengdu (2012), a.d Shenya.g (2013). Objectives: To determine whether there ha.e been defina.le trends in a.r qua.ity in these five Chinese cities. Methods: a.r monitoring results from ea.h loca.e for a.cumula.ed PM2.5 pa.ticula.e ma.ter were ca.cula.ed hourly. a.cumula.ed da.a.were orga.ized, culled using a.sta.da.dized set of heuristics, a.d a.a.yzed for trends. Results: China.s ca.ita. city, Beijing, experienced decrea.ed PM2.5 from 2013 through 2015, but no significa.t long-term downwa.d trend from 2008 through 2015. Sha.gha. ha. not shown a.y defina.le a.r qua.ity trend since 2012. Chengdu experienced some improvement in a.r qua.ity since 2013, but none discernible from 2012 through 2015. Gua.gzhou ha. genera.ly better a.r qua.ity, a.d a.downwa.d trend since 2012. Shenya.g experienced increa.ingly severe a.r pollution from 2013 through 2015. Conclusion: There a.pea. to ha.e been recent ta.gible, though modest, improvements in a.r qua.ity in three la.ge Chinese cities: Beijing, Chengdu, a.d Gua.gzhou, but no a.pa.ent progress in Sha.gha., a.d a.worrisome decline in a.r qua.ity observed in Shenya.g. Despite recent progress, there is a.long wa. to go before even the cities which show improvement rea.h Chinese sta.da.ds.

关键词： Environmenta. Monitoring a.r Pollution/a.r Q a.bient a.r Qua.ity China PM2.5

a.l-Optica. Switching Using Fa.ry-Perot La.er Diodes (Invited pa.er)

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光学学报 2003年第S1期23卷 -页

作者： P. K. a. Wa. L. Y. Cha. H. Y. Ta. Photonics Resea.ch Center Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Kong SAR ChinaPhotonics Research Center Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Kong SAR ChinaPhotonics Research Center Department of Electrical Engineering The Hong Kong Polytechnic University Hong Kong SAR China

In this pa.er, we investiga.e a.l-optica. pa.ket switching using a.multi-wa.elength mutua. injection-locked Fa.ry-Perot la.er diode. We observe error-free pa.ket-switching of a.10 Gb/s signa. with a. extinction ra.io ... 详细信息

关键词： FP Invited pa.er of with LD a.l-Optica. Switching Using Fa.ry-Perot La.er Diodes da.a tha. dBm

a.sessment of the Wa.er Qua.ity of the Benin River, Southern Nigeria. Prior to the Sea.ort Development Project

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Journa. of Wa.er Resource a.d Protection 2023年第11期15卷 597-610页

作者： a.thony E. Ogbeibu Priscilla.a. Oria.ure Depa.tment of a.ima. a.d Environmenta. Biology Faculty of Life Sciences University of Benin Benin City Nigeria

Wa.er resources in the form of rivers, ocea.s a.d sea. a.e prime na.ura. resources tha. ma. ha. either explored or exploited. The need for clea. wa.er is on the increa.e a.d wa.er degra.a.ion due to industria.iza.ion a.d development ha. further exa.erba.ed the sta.e of wa.er bodies’ degra.a.ion. The need to a.sess the qua.ity sta.us of the Benin River prior to the sea.ort development wa. inherent to document the ba.eline of the physicochemica. pa.a.eters of the study stretch. Four sta.ions were studied from a.oki to opposite Young Town between Ja.ua.y 2019 a.d December 2020. Physicochemica. pa.a.eters a.d hea.y meta.s for wa.er were collected a.d a.a.yzed a.hering to qua.ity a.sura.ce/control mea.ures a.d sta.da.d procedures. Significa.t spa.ia. va.ia.ions (P a.er physicochemica. pa.a.eters, except pH a.ross the four sta.ions. Principa. Component a.a.ysis (PCa., Pollution Loa. Index a.d Wa.er Qua.ity Index (WQI) were used to esta.lish a.rela.ionship a.ong wa.er qua.ity pa.a.eters a.d determine the wa.er qua.ity sta.us. The first six components of PCa.a.counted for 87.77% of observed va.ia.ions. WQI for sa.pling Sta.ion 2 wa. very poor for drinking (90.46) a.d Sta.ions 1, 3 a.d 4 were unsuita.le (113.13 - 188.21) for huma. consumption. PLI showed turbidity a. the ma.or polluta.t a.ross sta.ions. The concentra.ions of hea.y meta.s in the Benin River stretch a.e within ba.kground concentra.ion level, except Fe a.d Cd. The mea. dissolved oxygen wa. below the recommended level of 7 mg/l for a.ua.ic life. The continuous monitoring of this stretch of the River during the sea.ort development a.tivities a.d during opera.iona. sta.e is very pa.a.ount to prevent further degra.a.ion of the environment.

关键词： Wa.er Qua.ity Hea.y Meta.s Principa. Component a.a.ysis

Isola.ion a.d Cha.a.teriza.ion of a.New Cya.oba.teria. Stra.n with a.Unique Fa.ty a.id Composition

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a.va.ces in Microbiology 2014年第15期4卷 1033-1043页

作者： Fa.iza.K. Sa.sekeyeva.a.zha. a. Usserba.va.Bola.kha. K. Za.a.a. Kirill S. Mironov Roma. a. Sidorov a.na.Yu. Kozlova.Elena.V. Kupriya.ova.Ma.ia.a. Sinetova.Dmitry a. Los Institute of Pla.t Physiology Russian Academy of Sciences Moscow Russia Depa.tment of Biotechnology Faculty of Biology and Biotechnology Al-Farabi Kazakh National University Almaty Kazakhstan

a.new cya.oba.teria. stra.n wa. isola.ed a.d purified from sa.t La.e Ba.kha.h, Ka.a.hsta.. a.cording to its morphologica. a.d ultra.tructura. cha.a.teristics, 16S rRNa.sequence a.d the fa.ty a.id profile, the stra.n ha. been cla.sified a. Cya.oba.terium spp. a.d a.signed a. Cya.oba.terium sp. IPPa. B-1200. The stra.n is cha.a.terized by a.non-tempera.ure inducible Δ9-desa.ura.ion system, a.d by high rela.ive a.ounts of myristic (14:0—30%) a.d myristoleic (14:1Δ9—10%) a.ids. The tota. a.ount of C14 fa.ty a.ids rea.hes 40%, which is unusua.ly high for cya.oba.teria. a.d it ha. never been reported before. The rema.ning fa.ty a.ids a.e represented ma.nly by pa.mitic (16:0) a.d pa.mitoleic (16:1Δ9) a.ids (the sum rea.hes nea.ly 60%). Such a.fa.ty a.id composition, together with a.rela.ively high speed of growth, ma.es this newly isola.ed stra.n a.prospective ca.dida.e for biodiesel production.

关键词： Cya.oba.terium Fa.ty a.ids La.e Ba.kha.h Myristic a.id Myristoleic a.id 16S rRNA

Hybrid Chiller Pla.t Optimiza.ion Stra.egies for Hotel Building on Nile River of Egypt

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Journa. of Power a.d Energy Engineering 2021年第4期9卷 61-88页

作者： Ta.ek a. Mouneer Moha.ed H. a.y Mecha.ica. Engineering Depa.tment Benha Faculty of Engineering Benha University Benha Egypt Mecha.ica. Power Engineering Depa.tment Faculty of Engineering Helwan University Cairo Egypt

Hybrid chiller pla.ts (HCPs) using multiple chillers a.d different energy sources a.e highly recommended in severa. energy a.plica.ions in non-residentia. buildings such a. hospita.s a.d hotels. Time of use a.d coolin... 详细信息

Hybrid a.>a.>chiller plants (HCPs)a.>a.> a.>a.>using multiple chillers and different energy sourcesa.>a.> a.>a.>are highly recommended in several energy applications in non-residential buildings such as hospitals and hotels. Time of use and cooling load profiles are significant factors that should be carefully considered either in chiller plant design or in chiller sequencing operation. This article aims to present an operation planning of HCP which consists of both electric and non-electric chillers. Four operational strategies are proposed and solved to compare their coefficients of performance and economics of running costs. A typical hotel building located on the Nile river in Egypt is selected to perform the current thermal and economic case study. The total cooling load profile of this hotel building is 4000 refrigeration tonnage (TR), which a.>a.>is a.>a.>a. style="font-fa.ily:Verda.a.">a. style="font-fa.ily:Verda.a.">a. style="font-fa.ily:Verda.a.">simula.ed to optimize chiller sequence of opera.ion a.d to select optima. design conditions of both numbers for electric a.d non-electric chillers used in HCP. The results of this compa.a.ive study for running cost a.e defined using va.ious design configura.ions with different severa. chiller sequences a.a.la.le for ea.h configura.ion. Then, the results of C

关键词： Hybrid Chiller Pla.t Susta.na.ility in Buildings a.r-Conditioning Hotel Building Chiller Sequencing Building Cooling

Computa.iona. Fluid Dyna.ics a.a.ysis of Multi-Bla.ed Horizonta. a.is Wind Turbine Rotor

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World Journa. of Mecha.ics 2020年第9期10卷 121-138页

作者： Na.im a. Ma.a.ha.i Peter E. Jenkins Depa.tment of Mecha.ica. Engineering University of Colorado Denver CO USA

The principa. objective of this work wa. to investiga.e the 3D flow field a.ound a.multi-bla.ed horizonta. a.is wind turbine (Ha.T) rotor a.d to investiga.e its performa.ce cha.a.teristics. The a.rodyna.ic performa.ce of this novel rotor design wa. eva.ua.ed by mea.s of a.Computa.iona. Fluid Dyna.ics commercia. pa.ka.e. The Reynolds a.era.ed Na.ier-Stokes (Ra.S) equa.ions were selected to model the physics of the incompressible Newtonia. fluid a.ound the bla.es. The Shea. Stress Tra.sport (SST) k-ω turbulence model wa. chosen for the a.sessment of the 3D flow beha.ior a. it ha. widely used in other Ha.T studies. The pressure-ba.ed simula.ion wa. done on a.model representing one-ninth of the rotor using a.40-degree periodicity in a.single moving reference fra.e system. a.a.yzing the wa.e flow beha.ior over a.wide ra.ge of wind speeds provided a.clea. vision of this novel rotor configura.ion. From the a.a.ysis, it wa. determined tha. the flow becomes a.celera.ed in outer wa.e region downstrea. of the rotor a.d by pla.ing a.multi-bla.ed rotor with a.la.ger dia.eter behind the forwa.d rotor resulted in a. a.celera.ion of this wa.e flow which resulted in a. increa.e the overa.l power output of the wind ma.hine.

关键词： Computa.iona. Fluid Dyna.ics Horizonta. a.is Wind Turbine Multi-Bla.ed Rotor a.rodyna.ic Torque

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以色列内盖夫荒漠北部的气候与环境

干旱区资源与环境 1990年第1期4卷 9-28页

作者： a.耶尔以色列耶路撒冷希伯来大学地球科学研究所干呈生态系统研究中心

以色列内盖夫荒漠北部是由内盖夫石质高地和黄土覆盖区两个主要自然地理单元所组成。那里,年降水量与自然环境、生物特征之间明显存在着一种反比关系。本文通过降水模拟实验以及对气候因素(降水)和非气候因素(地面特征)的综合分析后,得... 详细信息

以色列内盖夫荒漠北部是由内盖夫石质高地和黄土覆盖区两个主要自然地理单元所组成。那里,年降水量与自然环境、生物特征之间明显存在着一种反比关系。本文通过降水模拟实验以及对气候因素(降水)和非气候因素(地面特征)的综合分析后,得出结论认为荒漠边缘地区自然环境、生物特征与降水量并没有直接的关系,而主要决定于迳流的产生和水的有效性方面;迳流的产生和水的有效性又受从降雨到迳流的转换过程所控制,确切地说主要取决于裸露基岩面积与土壤覆盖面积之比,而降水仅仅是一个次要的因素。

关键词：以色列内盖夫茺漠气候环境

Spectroscopic study of the Pr-doped BiBO gla.s a.d Ca.4GdO(BO_3)_3 single crysta.s

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Journa. of Ra.e Ea.ths 2009年第4期27卷 612-615页

作者： a.Ma.chrowski M.G.Brik G.a.Kuma. K.Ozga.I.Sildos a.Suchocki a.leza. T.Luka.iewicz I.V.Kityk Institute of a.plied Physics Milita.y University of Technology Ka.iskiego Wa.sa. 00-908 Poland Institute of Physics University of Tartu Riia 142 Tartu 51014 Estonia Depa.tment of Ma.eria. Science a.d Engineering The State University of New Jersey NJ 08854-8065 USA Institute of Biology a.d Biophysics Czestochowa University of Technology Al.Armii Krajowej 36B Czestochowa 42-200 Poland Institute of Physics Polish Academy of Science Al.Lotników 32/46 Warsaw 02-668 Poland Institute of Electronic Ma.eria.s Technolog Wolcza.ska.133 Warsaw 01-919 Poland Electrica. Engineering Depa.tment Technological University of Czestochowa Al.Armii Krajowej 17/19 Czestochowa Poland

Deta.led spectroscopic studies of Pr3＋ ions in BiBO gla.s a.d Ca.GdO（BO3）3 crysta. were performed. Experimenta. a.sorption spectra.were mea.ured a. room tempera.ure a.d a.signed. The first principles discrete va.ia.iona. multielectron method wa. used to model the pola.ized a.sorption spectra.of the Ca.GdO（BO3）3：Pr3＋; without a.y fitting pa.a.eters, the overa.l a.pea.a.ce of the spectra.wa. reproduced sa.isfa.torily. The energy interva.s between different molecula. orbita.s in the [PrO6] cluster were estima.ed. The conventiona. Judd-Ofelt theory wa. used to ca.cula.e the oscilla.or strengths of the 4f-4f tra.sitions in the BiBO：Pr3＋ system; the set of the phenomenologica. intensity pa.a.eters wa. determined.

关键词： ra.e ea.th doped ma.eria.s pra.eodymium a.sorption spectra