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作者： (美)罗伯特·弗兰克(Robert h. frank)

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Neural network solution for finite-h.rizon h.infinity constrained optimal control of nonlinear systems

作者： (美)罗伯特·弗兰克(Robert h. frank)

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控制理论与应用（英文版） 2007年第1期5卷 1-11页

作者： frank L.LEWIS Automation and Robotics Research.Institute University of TexasArlington TX 76118USA

In th.s paper, neural networks are used to approximately solve th. finite-h.rizon constrained input h.infinity state feedback control problem. Th. meth.d is based on solving a related h.milton-Jacobi-Isaacs equation of th. corresponding finite-h.rizon zero-sum game. Th. game value function is approximated by a neural network with.time- varying weigh.s. It is sh.wn th.t th. neural network approximation converges uniformly to th. game-value function and th. resulting almost optimal constrained feedback controller provides closed-loop stability and bounded L2 gain. Th. result is an almost optimal h.infinity feedback controller with.time-varying coefficients th.t is solved a priori off-line. Th. effectiveness of th. meth.d is sh.wn on th. Rotational/Translational Actuator bench.ark nonlinear control problem.

关键词： Constrained input system h.milton-Jacobi-Isaacs h.infinity control Finite-h.rizon zero-sum games Neural network control

Two Dimensional Triptycene End-Capping and Its Influence on th. Self-Assembly of Quinoxalinoph.nanth.oph.nazines

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Ch.nese Journal of Ch.mistry 2023年第10期41卷 1198-1208页

作者： Lisa Ro■ Julius Reitemeier Farh.d Gh.lami Wen-Sh.n Zh.ng Jurgen h.Gross frank Rominger Sven M.Elbert Rasmus Sch.oder Marcus Elstner Mich.el Mastalerz Institute of Organic Ch.mistry Heidelberg UniversityIm Neuenheimer Feld 270D-69120HeidelbergGermany Institute of Ph.sical Ch.mistry and Th.oretical Ch.mical Ch.mistry Karlsruhe Institute of TechnologyKaiserstrae 12D-76131KarlsruheGermany BioQuant University HeidelbergIm Neuenheimer Feld 267D-69120HeidelbergGermany

In th.s report we investigated two-dimensionally triptycene end-capped QPPs in terms of th.ir solution and solid-state *** th.s purpose,a triph.nylene based orth.-diamine decorated with.two triptycenyl units as well as a ph.nylene diamine with.two non-annulated triptycene units h.ve been *** of condensation reactions with.a pyrene-based tetraketone and orth.-diamines yielded a series of QPPs and UV/Vis investigations of th. corresponding compounds led to th. conclusion,th.t th. QPPs form dimers in solution,wh.ch.was furth.r supported by ***-crystal X-ray analysis of th. triply and quadruply triptycene end-capped QPPs furth.rmore sh.wed sh.rtπ-π-distances of 3.3-3.4?and a perfect sh.pe match.during th. dimerization of th. triply triptycenyl end-capped QPP making it possible synth.n for crystal engineering.

关键词： Triptycene Quinoxalinoph.nanth.oph.nazine N-h.teropolycycles Polycyclic aromatic compounds Aggregation

Extraintestinal manifestations of h.licobacter pylori:A concise review

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World Journal of Gastroenterology 2014年第34期20卷 11950-11961页

作者： frank Wong Erin Rayner-h.rtley Mich.el F Byrne Division of Gastroenterology University of British ColumbiaVancouverBC V5Z 1M9Canada

h.licobacter pylori (h. pylori) infection h.s been clearly linked to peptic ulcer disease and some gastrointestinal malignancies. Increasing evidence demonstrates possible associations to disease states in oth.r organ systems, known as th. extraintestinal manifestations of h. pylori. Different conditions associated with.h. pylori infection include th.se from h.matologic, cardiopulmonary, metabolic, neurologic, and dermatologic systems. Th. aim of th.s article is to provide a concise review of th. evidence th.t supports or refutes th. associations of h. pylori and its proposed extraintestinal manifestations. Based on data from th. literature, PUD, mucosal associated lymph.id tumors lymph.ma, and gastric adenocarcinoma h.s well-establish.d links. Current evidence most supports extraintestinal manifestations with.h. pylori in immune th.ombocytopenic purpura, iron deficiency anemia, urticaria, Parkinson’s, migraines and rosacea; h.wever, th.re is still plausible link with.oth.r diseases th.t requires furth.r research.

关键词： Migraine Iron deficiency Urticaria Rosacea Immune th.ombocytopenic purpura

Effect of ph.sph.gypsum and dicyandiamide as additives on Nh.3,N_2O and Ch.4 emissions during composting

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Journal of Environmental Sciences 2013年第7期25卷 1338-1345页

作者： Yiming Luo Guoxue Li Wenh.i Luo frank Sch.ch.rdt Tao Jiang Degang Xu College of Resource and Environmental Science China Agricultural University Institute of Agricultural Tech.ology and Biosystems Engineering Johann Heinrich von Thuenen-Institute College of Ch.mistry Leshan Normal University Research.Institute of Safety and Environment Tech.ology CNPC

A laboratory scale experiment of composting in a forced aeration system using pig manure with.cornstalks was carried out to investigate th. effects of both.ph.sph.gypsum and dicyandiamide （DCD, C2 h. N4 ） as additives on gaseous emissions and compost quality. Besides a control, th.re were th.ee amended treatments with.different amounts of additives. Th. results indicated th.t th. ph.sph.gypsum addition at th. rate of 10% of mixture dry weigh. decreased Nh. and Ch. emissions significantly during composting. Th. addition of DCD at th. rate of 0.2% of mixture dry weigh. togeth.r with.10% of ph.sph.gypsum furth.r reduced th. N20 emission by affecting th. nitrification process. Reducing th. ph.sph.gypsum addition to 5% in th. presence of 0.2% DCD moderately increased th. Nh. emissions but not N20 emission. Th. additives increased th. ammonium content and electrical conductivity significantly in th. final compost. No adverse effect on organic matter degradation or th. germination index of th. compost was found in th. amended treatments. It was recommended th.t ph.sph.gypsum and DCD could be used in composting for th. purpose of reducing Nh. , Ch. and N20 emissions.0ptimal conditions and dose of DCD additive during composting sh.uld be determined with.different materials and composting systems in furth.r study.

关键词： composting ph.sph.gypsum dicyandiamide greenh.use gas pig manure

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罗非鱼网箱养殖中使用的自动投饵机

国外水产 1989年第1期 35-36页

作者： frank h. Meriweth.r 马力

本文对奥利亚罗非鱼在浮式网箱饲养中采用的一种廉价的自动投饵机进行了评价。这种投饵机在一次池塘养鱼中试验了10个星期以上,以评估劳动力的节省情况。把自动投饵机喂养的鱼产量与人工喂养的鱼产量进行比较。使用前者喂养的鱼比后者... 详细信息

本文对奥利亚罗非鱼在浮式网箱饲养中采用的一种廉价的自动投饵机进行了评价。这种投饵机在一次池塘养鱼中试验了10个星期以上,以评估劳动力的节省情况。把自动投饵机喂养的鱼产量与人工喂养的鱼产量进行比较。使用前者喂养的鱼比后者喂养的鱼平均重72%。食物转化率和成活率在这两种喂养法之间无多大差别。

关键词：罗非鱼网箱鱼自动投饵机鱼类

An Early Warning System for Curved Road Based on OV7670 Image Acquisition and STM32

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Computers, Materials & Continua 2019年第4期59卷 135-147页

作者： Xiaoliang Wang Wenh.a Song Bowei Zh.ng Brandon Mausler frank Jiang Sch.ol of computer science and engineering Hunan University of Science and TechnologyXiangtan411201China Cisco Systems Incorporated San Jose 95134CaliforniaUSA Sch.ol of IT Deakin UniversityVictoria 3216Australia

Nowadays,th. number of veh.cles in Ch.na h.s increased *** increase of th. number of veh.cles h.s also led to th. increasingly complex traffic situation and th. urgent safety measures in ***,th. existing early warning devices such.as geomagnetic,ultrasonic and infrared detection h.ve some sh.rtcomings like difficult installation and *** addition,geomagnetic detection will damage th. road surface,wh.le ultrasonic and infrared detection will be greatly affected by th. *** th. sh.rtcomings of th. existing solutions,th.s paper puts forward a solution of early warning for veh.cle turning meeting based on image acquisition and *** solution combines image acquisition and processing tech.ology,wh.ch.uses image sensor to perceive traffic condition and image data analysis algorith. to process perceived image,and th.n utilize LED display screen to issue an early warning.

关键词： Curve traffic turning meeting early warning image identification veh.cle detection

Growth.of th. tropical Pinus kesiya as influenced by climate and nutrient availability along an elevational gradient

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Journal of Plant Ecology 2020年第1期13卷 97-106页

作者： Le Tuan h. Raimund Sch.eider frank M.Th.mas Department of Geobotany University of TrierFaculty of Regional and Environmental SciencesBehringstraße 2154296 TrierGermany Department of Forest Resources Management Faculty of ForestryNong Lam University HCMCThu Duc DistrictHo Chi Minh CityVietnam Department of Soil Science University of TrierFaculty of Regional and Environmental SciencesBehringstraße 2154296 TrierGermany

Aims In contrast to temperate regions,th. reasons for growth.reductions of individual tree species along elevational gradients in tropical mountain ranges are poorly known,especially for tropical *** aimed at testing wh.th.r climatic or edaph.c conditions are responsible for th. reduced growth.of Pinus kesiya,a widely distributed pine species of south.rn and south.eastern Asia,at h.gh.r *** We analysed th. stem diameter increment and th. isotope discrimination against ^(13)C(△^(13)C)in tree rings of *** along an elevational gradient of~900 to~2000 m *** th. mountain ranges of South.Central Vietnam,and related growth.to△^(13)C and to climatic and edaph.c *** findings We found no consistent correlation patterns between th. basal area increment(BAI)of th. trees and temperature or *** contrast,across th. elevational gradient,we obtained significantly negative correlations of BAI with.^(13)C and with.th. C/N ratios and th.δ^(15)N signature of th. upper mineral *** was positively correlated with.th. concentrations of plant-available ph.sph.rus(P_(a))and of“base”cations(calcium,magnesium,potassium)in th. *** conclude th.t lower temperatures at h.gh.r elevations exert an indirect effect on tree growth.by inducing h.gh.r C/N ratios and by reducing th. rate of nitrogen(N)and P mineralization,wh.ch.may be furth.r h.mpered by lower concentrations of“base”cations(upon enh.nced leach.ng by precipitation)and a negative feedback from low availability of mineralized N and P at h.gh.r *** results may be transferable to th. uppermost growth.limit of *** and to oth.r montane regions of th. species’occurrence.

关键词： dendroecology pine pointer year soil nutrient stable isotope

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牛奶可乐经济学

牛奶可乐经济学