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Application and evaluation of payment channel in hybrid decentralized ethereum token exchange

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Blockchain(Research and Applications) 2020年第1期1卷 1-17页

作者： Xuan Luo zehua Wang Wei Cai Xiuhua Li Victor Cm.Leung Department of Electrical and Computer Engineering The University of British ColumbiaVancouverV6T 1Z4Canada Blockchain@UBC The University of British ColumbiaVancouverV6T 1Z4Canada the Chinese University of Hong kong Shenzhen518172China Shenzhen Institute of Artificial Intelligence and Robotics for Society Shenzhen518100China Chongqing University Chongqing400044China Shenzhen University Shenzhen518061China

traditional centralized token exchange(CEX)has been suffering from hacking due to the centralized management of users’*** contrast,decentralized token exchange(DEX)maintains users’assets by smart contracts in a decentralized manner,but introduces additional overhead in terms of gas fee and transaction confirmation *** decentralized token exchange(HEX)has been proposed to combine the benefits of CEX and ***,existing HEX is criticized for two ***,trading transactions are time-consuming and expensive for frequent token ***,excessive simultaneous transactions might cause the pending transaction congestion in the Ethereum *** this paper,we propose a payment channel based HEX,which extends existing solutions by adding a new payment channel layer to benefit frequent traders and alleviate the pending transaction ***,we propose the very first gas-price ***-latency function to guide Ethereum transaction issuers to choose an optimal gas price that minim.z.s the overall *** simulations are conducted to compare the cost in the proposed HEX with that in the conventional *** results demonstrate the effectiveness of our proposed mechanism in terms of reducing gas fees and transaction confirmation latency for frequent traders as well as the pending transaction congestion in Ethereum.

关键词： Blockchain Payment channel Ethereum Smart contract token exchange Optimal gas price

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完全仿紧空间

四川大学学报(自然科学版) 1963年第2期 73-79页

作者：蒲保明费培之

自1944年***é刊布了仿紧空间的理论以后,近十几年来这一理论有很大的发展,它在一般拓扑学中的地位和作用也显得愈来愈重要,因而对某些特殊的仿紧空间进行研究便具有一定的意义。一个拓扑空间叫做完全（或遗传）仿紧的;如果它的每一个... 详细信息

自1944年***é刊布了仿紧空间的理论以后,近十几年来这一理论有很大的发展,它在一般拓扑学中的地位和作用也显得愈来愈重要,因而对某些特殊的仿紧空间进行研究便具有一定的意义。一个拓扑空间叫做完全（或遗传）仿紧的;如果它的每一个子空间都是仿紧的（这里的仿紧性不包含t2）。虽然这是一类特殊的仿紧空间,但它却包含了许多重要的空间类,如noether空间或遗传紧空

关键词：仿紧空间内接定理仿紧Hausdorff空间拓扑积局部有限

Using the Bacterial Protein nupC as a model for Human nucleoside Drug transporters

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Using the Bacterial Protein NupC as a Model for Human Nucleo...

the 4th ISGO International Conference on Structural Genomics

作者： Dawn A.Hadden Shaun k.Loewen Jean C.Ingram Simon G.Patching masao Yamashita matthew J.Conroy David A.middleton Gary J.Litherland Richard B.Herbert maurice P.Gallagher Per A.Bullough Peter J.F.Henderson Carol E.Cass James D.Young Stephen A.Baldwin Institute of membrane and Systems Biology University of Leeds LS2 9JTUK Dept.of Physiology University of Alberta EdmontonAlberta T6G 1Z2Canada Institute of membrane and Systems Biology University of Leeds LS2 9JTUK Institute of membrane and Systems Biology University of Leeds LS2 9JTUK Dept.of molecular Biology and Biotechnology University of Sheffield Sheffield S10 2TNUK Dept.of molecular Biology and Biotechnology University of Sheffield Sheffield S10 2TNUK Faculty of Life Sciences the University Of manchester Manchester M60 1QDUK Institute of membrane and Systems Biology University of Leeds LS2 9JT UK Institute of Cell ＆ Molecular BiologyUniversity of EdinburghEdinburghUK Institute of membrane and Systems Biology University of Leeds LS2 9JTUK Institute of Cell ＆ molecular Biology University of Edinburgh Edinburgh UK Dept. of molecular Biology and Biotechnology University of Sheffield Sheffield S10 2TNUK Institute of membrane and Systems Biology University of Leeds LS2 9JTUK Dept.of Oncology Cross Cancer Institute 11560 University AvenueEdmonton Alberta T6G 1Z2Canada Dept.of Physiology University of Alberta Edmonton Alberta T6G 1Z2Canada Institute of membrane and Systems Biology University of Leeds LS2 9JTUK

＜正＞In humans, concentrative nucleoside transporters play important roles in the cellular uptake of chemotherapeutic nucleoside analogues. to provide insights into the mechanism of transport, we have utilised the homologous nucleoside transporter nupC of Escherichia coli as a model system. It proved possible to express this protein at levels up to 20% of the total membrane protein in E. coli and

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米氮平与舍曲林治疗抑郁症伴有焦虑疗效比较

中国新药与临床杂志 2004年第2期23卷 90-92页

作者：陈佐明张建宏李占文张红梅穆雪鹍新乡医学院第二附属医院河南新乡453002

目的 :比较米氮平与舍曲林对抑郁症伴焦虑的疗效及其安全性。方法 :1 1 1例抑郁症分为 2组。米氮平组 56例 [男性 30例 ,女性 2 6例 ,年龄(39±s 1 3)a,本次抑郁病期 (3± 5)mo]予米氮平30～ 45mg ,po,qd;舍曲林组 55例 [男性 2 9例 ,女... 详细信息

目的 :比较米氮平与舍曲林对抑郁症伴焦虑的疗效及其安全性。方法 :1 1 1例抑郁症分为 2组。米氮平组 56例 [男性 30例 ,女性 2 6例 ,年龄(39±s 1 3)a,本次抑郁病期 (3± 5)mo]予米氮平30～ 45mg ,po,qd;舍曲林组 55例 [男性 2 9例 ,女性 2 6例 ,年龄 (40± 1 2 )a,本次抑郁症病期 (4± 4)mo]予舍曲林 50～ 1 0 0mg,po,qd;均 6wk为一个疗程。结果 :对抑郁症状的治疗 ,米氮平组显效率73 % ,舍曲林组显效率 67% ,疗效差异无显著意义(P >0 .0 5) ;对焦虑症状的治疗 ,米氮平组显效率79 % ,舍曲林组显效率 44 % ,疗效差异有显著意义(P <0 .0 5)。整体药物不良反应发生率 2组相当。结论 :米氮平与舍曲林是安全有效的治疗抑郁症的药物。

关键词：抗抑郁药舍曲林抑郁症焦虑米氮平

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mobilizing Crop Biodiversity

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molecular Plant 2020年第10期13卷 1341-1344页

作者： Susan mcCouch zahra katy navabi michael Abberton noelle L.Anglin Rosa Lia Barbieri michael Baum kirstin Bett Helen Booker Gerald L.Brown Glenn J.Bryan Luigi Cattivelli David Charest kellye Eversole marcelo Freitas kioumars Ghamkhar Dario Grattipaglia Robert Henry maria Cleria Valadares Inglis tofazzal Islam.z.karia kehel Paul J.kersey Graham J.king Stephen kresovich Emily marden Sean mayes marie noelle ndjiondjiop Henry t.nguyen Samuel Rezende Paiva Roberto Papa Peter W.B.Phillips Awais Rasheed Christopher Richards mathieu Flouard maria Jose Amstalden Sampaio Uwe Scholz Paul D.Shaw Brad Sherman S.Evan Staton nils Stein Jan Svensson mark tester Jose Francisco montenegro Valls Rajeev Varshney Stephen Visscher Eric von Wettberg Robbie Waugh Peter Wenzl Loren H.Rieseberg Plant Breeding and Genetics School of Integrated Plant SciencesCornell UniversityIthacaNY14853USA DivSeek Global Institute for Food Security110 Gymnasium PlaceUniversity of SaskatchewanSaskatoonSKS7N 0W9Canada lnternational Institute of tropical Agriculture(IItA) PMB 5320Oyo RdIbadanNigeria International Potato Center(CIP)1895 Avenida La molina Lima Peru 12Lima 15023Peru Embrapa Genetic Resources and Biotechnology Parque Estacjao BiologicaFinal Av W5 NorteCaixa Postal 0237270770-917-Brasilia DFBrazil International Center for Agricultural Research in the Dry Areas(I CAR DA) Station Exp.INRA-Quich.Rue Hafiane Cherkaoui.Agdal.Rabat-Instituts10111RabatMorocco Department of Plant Sciences University of Saskatchewan51 Campus Dr.SaskatoonSK S7N 5A8Canada Department of Plant Agriculture University of GuelphRm 316Crop Science Bldg50 Stone Rd EGuelphON N1G 2W1Canada Genome Prairie 111 Research DriveSuite 101SaskatoonSKS7N 3R2Canada the James Hutt on Institute Errol RoadInvergowrieDundeeDD25DAUK CREA Research Centre for Genomics and Bioinformaticsvia San Protaso 302Fiorenzuola d'Arda29017Italy Genome British Columbia 400-575 West 8th AvenueVancouverBCV5Z 0C4Canada International Wheat Genome Sequencing Consortium 2841 NE Marywood CtLee's SummitMO.64086USA Forage Science Grasslands Research CentreAgResearchPalmerston North4410New Zealand Queensla nd Alliance for Agriculture and Food Inn ovation University of QueenslandBrisbaneQLD 4072Australia Institute of Biotechnology and Genetic Engineering(IBGE) Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Southern Cross University PO Box 157LismoreNSW 2480Australia Royal Botanic Gardens KewRichmondSurreyTW93AEUK Feed the Future Innovation Lab for Crop Improvement 431 Weill HallCornell UniversityIthacaNY14853USA Department of Botany and Biodiversity Research Centre University of British ColumbiaVancouverBC V6R 2A5Canada Crops For the Future(Uk)CIC 76-80 Baddow Road ChelmsfordEs

Over the past 70 years,the world has witnessed extraordinary growth in crop productivity,enabled by a suite of technological advances,including higher yielding crop varieties,improved farm management,synthetic agrochemicals,and agricultural *** this"Green Revolution"intensified crop production,and is credited with reducing famine and malnutrition,its benefits were accompanied by several undesirable collateral effects(Pingali,2012).these include a narrowing of agricultural biodiversity,stemming from increased monoculture and greater reliance on a smaller number of crops and crop varieties for the majority of our *** reduction in diversity has created vulnerabilities to pest and disease epidemics,climate variation,and ultimately to human health(Harlan,1972).

关键词： intensified crops agricultural

糖尿病视网膜病变进展的定位预测模型的形成和评估

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世界核心医学期刊文摘（眼科学分册） 2005年第4期1卷 44-44页

作者： Schneck m.E. Bearse Jr. m.A. 杨建刚

PURPOSE. to formulate and test a model to predict the development of local patches of nonproliferative diabetic retinopathy (nPDR), based on multifocal electroretinogram (mfERG) implicit times and candidate diabetic risk factors. mEtHODS. mfERGs and fundus photographs were obtained from 28 eyes of 28 diabetic patients during an initial and 12- month followup examination. mfERG implicit times were derived at 103 locations using a template- stretching method, and a z- score was calculated in comparison with 20 age- matched normal subjects. thirty- five nonoverlapping retinal zones were constructed by grouping two to three adjacent stimulated locations, and each zone was assigned the maximum.z. score within it. zones containing initial retinopathy were excluded from further analysis. the probability that new retinopathy would develop in the remaining zones by the follow- up examination was modeled based on the mfERG implicit time z- score for the zone and other candidate diabetic risk factors determined during the initial visit. Data collected from four previously untested diabetic subjects and the other eye of eight previous subjects during their second year follow- up were used to test the predictive model. RESULtS. After 1 year, new retinopathy developed in 11 of the 12 nPDR eyes and 1 of the 16 eyes without initial retinopathy. After accounting for the correlation among zones within each eye, a predictive model was formulated with the variables mfERG implicit time, duration of diabetes, presence of retinopathy (nPDR or no retinopathy), and blood glucose level, at initial visit. the area under the receiver operating characteristic (ROC) curve of this multivariate model is 0.90 (P the predictive model has an expected sensitivity of 86% and a specificity of 84% , which was verified by the test data. COnCLUSIOnS. the development of diabetic retinopathy over a 1- year period can be well predicted by a multivariate model. the inclusion of local mfERG implicit t

关键词：预测模型视网膜病变视网膜电图眼底照相局灶病变随访检查月检查相关性因素测定时间预测时间

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t1期乳腺肿瘤术前腋窝超声检查的价值

国际医学放射学杂志 2016年第3期 334-334页

作者： J.del Riego m.J.Diaz-Ruiz m.teixidó J.Ribé m.Vilagran L.Canales 唐皓 Women’s Imaging Department of RadiologyUDIAT Centre DiagnòsticInstitut Universitari Parc Taulí-UAB

摘要目的 (1)探讨在p t1期肿瘤病人中腋窝超声检查(AUS)的诊断价值以及联合细针穿刺(FnA)能否提高诊断效能;(2)确定在满足美国外科医师协会(ACOSOG)z0011标准的病人(淋巴结转移数目不超过2个)中腋窝超声检查的阴性预测值。材料与方法在... 详细信息

摘要目的 (1)探讨在p t1期肿瘤病人中腋窝超声检查(AUS)的诊断价值以及联合细针穿刺(FnA)能否提高诊断效能;(2)确定在满足美国外科医师协会(ACOSOG)z0011标准的病人(淋巴结转移数目不超过2个)中腋窝超声检查的阴性预测值。材料与方法在355例p t1期乳腺肿瘤病人中,采

关键词：腋窝细针穿刺乳腺肿瘤 t1 超声检查