象散法 的英文怎麼說
中文拼音 [xiàngsǎnfǎ]
象散法
英文
astigmatism method-
Cryptic species have been found in a wide range of marine organisms ; with majority of them are benthic invertebrates. in contrast, marine holoplanktons are thought to have lower diversity and slow speciation due to their strong dispersal potential. this paper reviewed studies on cryptic species and speciation in marine holoplankton. based on findings in 38 studied taxa, it was concluded that : 1 ) cryptic species are pervasive in marine holoplankton, suggesting holoplankton speciation was more active than previously thought ; 2 ) current morphospecies diversity is untenable to reflect true species diversity in marine holoplankton ; 3 ) geographic isolation may facilitate cryptic speciation of marine holoplankton. however, contribution of allopatric speciation is still questionable ; 4 ) ecological speciation may be the prevailing speciation mode in marine holoplankton. cryptic speciation in marine holoplankton is paradoxical, because rapid speciation under strong gene flow is countertuitive. solution of this paradox will help us gain deep insights of marine speciation and biodivesity
隱種廣泛存在於各類海洋生物中，尤其是底棲無脊椎動物.然而，海洋終生浮游生物由於具有較強的擴散能力，往往被視為生物多樣性低、物種形成慢.本文就海洋終生浮游生物隱種與物種形成的研究作一綜述.基於研究的38個種類，結果表明: 1 ）海洋終生浮游生物普遍存在隱種，其物種形成要比想象得快; 2 ）由於引種的廣泛存在，形態種生物多樣性無法反映海洋終生浮游生物真正的物種多樣性; 3 ）地理隔離有助於海洋終生浮游生物隱種的形成，但異域物種形成的作用仍值得商榷; 4 ）生態物種形成很可能是海洋終生浮游生物物種形成的主流模式.海洋終生浮游生物強基因流下快速的物種形成有悖于生物進化常理，解決該悖論將有助於我們對海洋物種形成和生物多樣性的理解Abstract : considering the second nearest - neighbor interaction and cubic, quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration. it is shown that the kind of nonlinear chain exhibits envelope soliton, envelope kink and envelope antikink soliton. these results can also be used to explain the experimental phenomena that the kink amplitude of the self - localized structure is determined only by the intrinsic properties of its lattices
文摘:同時考慮次近鄰諧振相互作用和三次方、四次方非諧相互作用，利用多重尺度結合準離散近似方法去計算晶格振動行為，發現一維非線性點陣中存在包絡孤子及正扭結型包絡孤子、反扭結型包絡孤子，解釋了自局域結構的幅度只取決于點陣中的固有參數的實驗現象Lasers and laser - related equipment - test methods for laser beam widths, divergence angles and beam propagation ratios - general astigmatic beams
激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.一般象散束Lasers and laser - related equipment - test methods for laser beam widths, divergence angles and beam propagation ratios - stigmatic and simple astigmatic beams
激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.無象散和簡單象散束Lasers and laser - related equipment - test methods for laser beam widths, divergence angle and beam propagation ratios - part 1 : stigmatic and simple astigmatic beams
激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.第1部分:無象散和簡單象散束I knew mr. rochester ; though the begrimed face, the disordered dress his coat hanging loose from one arm, as if it had been almost torn from his back in a scuffle, the desperate and scowling countenance the rough, bristling hair might well have disguised him
我知道這是羅切斯特先生，盡管污穢的臉，散亂的服飾在一條胳膊上他的外衣垂掛著，好象在一場搏鬥中幾乎是從背上撕了下來似的，絕望陰沉的臉容粗糙直豎的頭發，完全可以叫人無法辨認。The advantage of the method is that the implicit interaction between dhss is transformed to the explicit relations between their contribution ratios
作者首先提出了組合溫度尺度法，它有效地將離散熱源之間抽象的相互作用轉換為邊界條件之間明確的物理關系。This dissertation presents a hypoelastic constitutive model with four material constants in describing the mechanical behavior of granular materials under loading. analysis results of the model have good coincidence with those of triaxial experiment of the standard sand under different relative density. the model can describe the contractant and dilatant phenomena of granular materials
提出了一種含4個材料常數的亞彈性本構模型，來描述散粒體在加載時的力學行為，本模型的分析結果與不同相對密度下標準砂的三軸實驗可較好地吻合，能反映散粒體的剪縮、剪脹現象，還對如何用三軸實驗數據來確定這4個材料常數，給出了適宜的計算方法。Third, the traditional method of the establishment of disperse systems is analyzed ; the method of step establishment model is used. this method makes the establishment of disperse systems easy, and can minish the complex of makes the establishment of disperse systems
再次，分析了離散事件系統的建模方法，提出了對象模塊化分級建模方法，該方法分三步對柔性製造系統建模:建立系統的靜態對像模型、動態行為模型和調度決策模型。In the positioning servo - system, which generally is configured by the d. c. pulse width modulator ( pwm ) velocity governing system and position servo - loop, the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value, etc. 1, 2 ， and it cannot be ignored. by using the identification technique to form the mathematical model of the system, authors have confirmed the facts. therefore, to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system, the perturbed parameters value bounds of the pwm velocity loop, which is as the controlled plant of position servo - loop, should be accounted. consequently, the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors. the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot, fast precise positioning. in order to reveal the effects of the design method, the comparative research work is done by the authors. also, it has been tested in an industrial experiment, the results proved it is satisfactory
由直流脈寬調速系統（ pwm ）和位置環構成的定位系統中，速度環的參數隨負載特性；電網電壓；給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 ， 2 .因此在設計位置環的離散滑模控制時，必須針對速度環（即位置環的控制對象）的參數攝動范圍採用「對象參數攝動離散滑模控制器的設計方法」 ，以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果，本文作了對比性研究，並將該設計方法用於工業試驗中，取得了滿意的結果The author mainly anticipates the task including the simulation of eye fundus imaging and image mosaic. on the base of the dr principle and ophthalmic phototropism study, the author analyze and contrast new fundus camera system with traditional fundus camera. the author will establish the eyeball model with 3ds max technology, imitate the simple eyeball dioptre system and simulate the narrow - angle imaging to ensure the rationality and authenticity of fundus image, which solves the object origin of later image process, then fast mosaics the nine piece of fundus images with the help of the image registration theory and acquire a piece of wide - view fundus image containing more information, thereby provides doctor with enough diagnostic detail, which solves the problem of narrow view
作者在熟悉糖尿病性視網膜病變原理和眼科屈光學的基礎上，進一步研究分析了新型免散瞳眼底照相系統和傳統眼底照相機原理和區別，擬採用3dsmax建立三維眼球模型，模擬眼球屈光系統，模擬眼底照相系統的小角度拍攝，使獲取的眼底圖像合理真實，解決後期系統圖像分析處理的對象來源問題;然後運用醫學圖像配準理論對模擬獲取到的九幅小角度眼底圖像進行快速拼接，拼成一幅大角度的眼底圖像，解決小瞳孔拍攝圖像視角太小的問題;最後通過對眼底圖像配準演算法在相似性測度和搜索演算法的比較，找到一種適合眼底照相系統的眼底圖像拼接的快速演算法。After analysising the theory and characteristics of the corba and mobile agent technologies, the paper brings forward firstly a kind of mobile agent architecture - coma, and gives the solution to coma ' s asynchronous transfer, concurrent control, naming, location and intelligence mechanism in detail. furthermore, aiming at making up the flaws of the application servers based on corba in distributed group environment and solving the problem of object ' s remotion on the corba server, the paper proposes a kind of corba architecture based on mobile agent - maorb, discusses naming and transparent transfer of mobile agent in a maorb system in detail, and gives a reasonable improvement method
本文在分析了corba和移動agent這兩種分散式技術的運行原理及其特點之後，首先提出一種應用於協同環境下的移動agent體系結構coma ，並詳細給出了coma的異步遷移、並發控制、命名和尋址，智能化機制這幾個關鍵技術的解決方法。進而，為了彌補單純的利用corba技術來構建分散式集群環境中應用服務器的不足，解決corba服務端對象的可移動性問題，本文又提出了一種基於coma的corba體系結構maorb ，詳細討論了maorb系統中移動agent的命名和透明遷移以及corba和coma的結合度問題，並給出了合理的解決方案。The program is applied to 1st phase project of dayao bay bulk terminals, dalian port and the result is satis factory. finally, the article discusses the problem in research and brings some advices in further research. based on systems analysis, modem computer simulation technology and technological analysis of large. sized bulk terminals, the article proposes the appliance of ooa to the research of bulk handling system and raises a concept of simulation system
本論文針對散糧碼頭系統設計與運營中出現的問題，根據系統分析的方法，結合現代計算機模擬技術，在對大型散糧裝卸碼頭工藝系統分析的基礎上，提出了應用面向對象的系統分析方法開展對散糧碼頭裝卸工藝系統進行分析研究，並建立模擬系統的概念。( 2 ) the causation that the caustic phenomena of electromagnetic wave propagation in two - dimension concave reflectors occurs and the types of singularities in caustic fields are investigated, and the conclusion that there are two types of singularities ( fold and cusp ) in caustic fields in two - dimension concave reflectors is obtained ; by symplectic geometrical method, formulations of computing wave fields in and far away from caustic fields in two - dimension concave reflectors are deduced, and the results are plotted in pictures. ( 3 ) the cause of the caustic phenomena of electromagnetic wave propagation in three - dimension concave reflectors and the types of singularities in caustic fields is discussed, and the conclusion that there are three main types of singularities ( fold, cusp and swallowtail ) in caustic fields in three - dimension concave reflectors is obtained ; by symplectic geometrical method, the formulae of computing wave fields in and far away from caustic fields in three - dimension concave reflectors are deduced. particularly, the wave fields in ellipsoid concave reflector are computed, and the results displayed in special sections are given
論文主要包括三個方面： （ 1 ）分析了凹面反射的焦散現象，給出了不同凹面反射的焦散圖； （ 2 ）分析了二維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了二維凹面反射波動場焦散區奇性主要有折疊（ fold ）和尖點（ cusp ）兩種的結論，利用辛幾何方法構造了圓錐曲面反射波動場非焦散區和焦散區的通用計算公式，並給出了圓柱面、橢圓柱面及雙曲柱面反射的計算結果； （ 3 ）分析了三維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了三維凹面反射波動場焦散區奇性主要有折疊（ fom 、尖點kusp和燕尾k ）三種的結論，提出了利用辛幾何方法計算三維凹面反射波動場非焦散區和焦散區的計算方法，並給出了三軸不等橢球體凹面反射波動場的計算結果剖面圖。But at present, it also short of strict and valid versify method and analyzing simulated method in the describing system model with uml
本文在研究工作流、 uml和對象petri網的基礎上提出了一種分散式工作流系統的建模方法： dwfs _ umlopn 。Making use of the corba ' s excellent ability of the distributed object handling, fully considering the snmp ' s advantage of being widely supported, the thesis puts forward a kind of network management framework based on corba / snmp gateway. then, according to the framework, combining with itu - t " s recommendation of molding corba system by uml, the thesis models nms interfaces of requirement and analysis stage. the interface requirement is explained, and the static structures and dynamic behaviors are described with uml graphic syntax
本文分析了傳統網管框架的不足，利用corba優秀的分散式對象處理能力，又充分考慮snmp支持廣泛的優點，提出一種基於corba snmp網關的網管系統框架；然後，結合itu - t使用uml建模corba系統的建議，對網管系統介面進行了需求和分析階段的建模，闡釋了系統的介面需求，並使用uml圖解語法對介面的靜態結構和動態行為進行描述。To achieve information integration in manufacture process, this paper, with reference to dnc, researches into manufacture process information integration from 3 aspects : data level, function level, application level, presents the management information integration framework （ miif ） based on distributed control technology, builds meta - agent and application agent by regarding agent as an entity having special behavior ability and specific action objective, establishes agent control model, and then gives the collaborative solution. with field - bus technology and agent technology, the dnc system model based on agent technology is established which shows a efficient way of device integration. a general model of device integration is set up, and an agent model based on soft plug - in technology is built
該模式包括面向製造過程的車間生產管理與控制的上層結構和面向車間設備的加工控制的下層結構；為實現製造過程信息的集成，本文從三個層面：數據層面、功能層面、應用層面上闡述了車間製造過程信息的集成方式，並借鑒dnc思想，建立了基於分散式控制技術的製造過程信息集成框架（ miif ） ；採用面向對象方法，對miif中的代理體從定義抽象、結構和功能等進行了深入研究；從知識層面上的三個層次：語言規范、會話機制、問題域對miif的多agent協作進行研究，建立了多agent交互的形式化模型。The distributed object technique is one focus of software development. using this technique, the developer can realize the transparent call between the objects that are on different computer without thinking about the network communication, then the object oriented technique can be used to design the distributed system
分散式對象技術是目前軟體界研究的一個熱點，利用這種技術可實現對象間跨平臺透明調用，使開發人員在不考慮網路通信的情況下達到與其它平臺交互的目的，這樣就能將基於單平臺的面向對象方法的優點擴展到分散式系統中，從而實現系統更直觀的構造。This paper analyzes the characters and environment of the software project management, studies various development methods. after absorbing the knowledge of software engineering, project management, object - oriented method, system engineering, artificial intelligence, distributed network management system, character and mapping technique, this paper puts forward the agent - based method in software project management and lucubrates the agent - based system analysis, system design and programming. it also constructs the agent - based program model by unified modeling language
本文針對軟體開發項目管理的特點和環境，分析比較了各種開發方法，吸收了軟體工程、項目管理、面向對象方法與技術、系統工程、人工智慧、分散式網路管理系統、特徵及映射技術等領域的知識，提出了基於agent的軟體開發項目管理方法，對基於agent的軟體開發項目的系統分析、系統設計以及程序編制等方面進行了深入研究，並且採用可視化統一建模語言來自動生成基於agent的應用程序模型。The thesis introduces the principle and development of applied ciyptography, encr, ption and digital signature. it also introduces the thought and technology of the object - oriented methodology. with the development of the object - oriented technology and distribution application, object - oriented communication has become popular
本文論述了應用密碼學以及數據加密和數字簽名（ digitalsignature ）的原理及發展；同時介紹了面向對象方法學的思想和技術，指出隨著面向對象技術和分散式應用技術的發展，面向對象的通訊機制正變得越來越流行，安全對象的提出為此種通訊機制提供了必要的安全保證。分享友人