18 yang y , zhou c l . research on machine understanding - based classification of chinese metaphor . journal of chinese information processing , 2004 , 18 : 31 - 36 . 19 dai s x , zhou c l . computational model of metaphor and its application in metaphorical classification 對漢語隱喻計算研究的分析,按照目前研究的脈絡(luò)討論了漢語隱喻理解的分類體系的構(gòu)建,漢語隱喻語句的機器分類識別研究中的隱喻語義網(wǎng)絡(luò)分析方法以及漢語隱喻邏輯釋義研究中的兩種邏輯體系。
In this article we lay special stress on the settlement of several problems such as the development method of webgis according to the multi - layer distributed computational model , the data transformation between oracle spatial and gml , and the method of parsing and presenting geographic data in gml format 重點解決了多層分布式計算模式下的webgis系統(tǒng)的開發(fā)、 gml應(yīng)用schema的定義、 oraclespatial與gml的數(shù)據(jù)格式轉(zhuǎn)換、 gml文檔的解析與空間數(shù)據(jù)的顯示等問題。
In this thesis , based on pershing ii surface to surface missile , a new kind of ballistic missile was designed with an additional rocket engine , which can be ignited twice . firstly , aerodynamic computational models of missile body and warhead which reentry with supersonic are built according to the task requirements ; secondly , the propulsion system model of missile is built whose first two stages are solid rocket engines and the third stage is liquid - solid combined rocket engine . the nozzle and the shape of the engine are designed to meet the needs of the populsion project ; thirdly , the trajectory model of the mass point is built and a wavy trajectory is designed & optimized ; finally , the ability of a missile ' s breaking through defence is analyzed 以美國潘興導(dǎo)彈為原型,增加可兩次點火的末級發(fā)動機,改裝成具有跳躍能力的地地彈道導(dǎo)彈;首先,根據(jù)任務(wù)需求,建立了導(dǎo)彈的氣動模型,并建立了彈頭再入時高超聲速氣動模型;其次,建立了導(dǎo)彈推進系統(tǒng)模型,前兩級采用了固體火箭發(fā)動機,第三級采用了固?液組合火箭發(fā)動機,并在總體方案要求下,對發(fā)動機噴管和外形進行了設(shè)計;第三部分,建立了導(dǎo)彈質(zhì)點彈道模型,設(shè)計了一條跳躍式彈道,并對跳躍式彈道進行了優(yōu)化設(shè)計;最后,對導(dǎo)彈進行了突防能力分析,從分析的結(jié)果可以看出,跳躍式彈道的突防能力比常規(guī)的拋物線彈道要強。
The originality of the thesis lies in : ( 1 ) establishment of analysis model for different design phases of multi - ribbed slab in accordance with the slab ' s grading and multimode failure mode , by felicitously assumption and affecting factor ' s evaluation , the computational model corresponding to codes " requirement is proposed ( 6 ) .實用設(shè)計方法的建立和完善通過中高層密肋壁板結(jié)構(gòu)房屋的工程設(shè)計,結(jié)合其他結(jié)構(gòu)體系的相關(guān)研究成果,初次建立了中高層密肋壁板結(jié)構(gòu)房屋的概念設(shè)計原則和抗震計算方法。
The material job and main conclusion are as follows : ( 1 ) a simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method ; data structure and computational model on interface are established aiming at blocks of structured grids . ( 2 ) simple procedure is established in nonorthogonal grids by use of the finite volume method and in - depth discusses on special topic such as boundary condition in nonorthogonal grids , deferred correction method and grads compute on calculational nodes , and so on 本文完成的具體工作和主要結(jié)論如下: 1 )以代數(shù)網(wǎng)格生成方法為基礎(chǔ)提出了一種簡單的、可獨立于網(wǎng)格生成方法之外的邊界正交化技術(shù);針對分區(qū)結(jié)構(gòu)網(wǎng)格系統(tǒng)建立了分區(qū)交界面處的數(shù)據(jù)結(jié)構(gòu)與計算模型; 2 )利用有限體積方法在非正交同位網(wǎng)格系統(tǒng)中建立了simple求解算法,對非正交網(wǎng)格系統(tǒng)中的邊界條件、延遲修正技術(shù)及計算節(jié)點的梯度計算等專題進行了深入討論。
It is very difficult to analyze flame radiation in the cylinder of a diesel engine by theoretical method since flame radiation is a function of many parameters , such as the combustion process , the geometrical description of the chamber , the soot formation and oxidation processes , the soot radiant temperature and soot absorption coefficient . the radiant property of the flame in a cylinder is dependent on the combustion process . but the thermodynamic state of real engine cycles can be analyzed from the pressure - volume diagrams in the cylinder . thus a new thermodynamic computational model is set up for the flame radiation in the cylinder of a diesel engine based on the indirect relationship between the flame radiation and the pressure - volume diagram of the combustion process in this paper . the flame radiant heat flux in the cylinder of a di diesel engine is calculated with the variation of crank angle by this model . compared with measured values , the result of the computational values shows the model is available to represent the effects of flame radiation 柴油機缸內(nèi)的火焰輻射受諸多因素的影響,用理論分析法來確定它是相當困難的,由于柴油機缸內(nèi)火焰輻射特性依賴于缸內(nèi)的燃燒過程,而燃燒過程中的實際熱力狀態(tài)又可用示功圖來分析,因此借助于火焰輻射與缸內(nèi)熱力參數(shù)之間的這種間接關(guān)系,建立了一種計算柴油機缸內(nèi)火焰輻射傳熱的新模型,利用該模型對一臺直噴柴油機缸內(nèi)火焰輻射熱流量隨曲軸轉(zhuǎn)角的變化情況進行了計算,將計算結(jié)果與實測結(jié)果進行了比較,表明該模型能較好預(yù)測缸內(nèi)火焰輻射傳熱量。
A large mount of experiments had been performed to obtain a range of main control parameters settings for proposed algorithm . csga for task matching and scheduling is not scalable for multiple independent decomposable tasks . the computational model of cooperative coevolution is addressed , which simulates the process of natural coevolution among species 針對傳統(tǒng)單種群遺傳算法求解獨立多任務(wù)分配與調(diào)度問題的伸縮性差的缺點,本文基于多物種共同進化的生物學背景,從理論上探討合作式共同進化計算模型的機理。
A 2 - d hydrodynamic - numerical model was applied to typical rocky rapids called jiyutan by comparing different computational models . based on the comparison of different schemes , the change of the discharge and the flow current in a branch were analyzed , and the relationship between the flow condition and excavation area , scope as well as mode was discussed , the conclusions show : ( 1 ) in a branching rocky rapids , the velocity may be reduced and flow condition can be improved by excavating one channel partly 本文在對各種數(shù)學模型比較的基礎(chǔ)上,應(yīng)用二維水動力數(shù)學模型研究典型石質(zhì)汊流灘? ?廣西潯江鯽魚灘航道整治工程方案,通過各方案計算結(jié)果比較,分析了不同汊道的開挖及汊道內(nèi)不同開挖面積、開挖范圍以及開挖方式所引起的分流比及工程區(qū)域航道水力條件的變化規(guī)律,研究結(jié)果表明: ( 1 )對于石質(zhì)汊流灘來說,在某一汊道通過局部開挖河槽,擴大過水斷面面積,可以達到降低工程段流速、改善局部水流條件的目的。