最優性與效率 的英文怎麼說

中文拼音 [zuìyōuxìngyǔxiàolǜ]
最優性與效率 英文
optimality and efficiency
  • 最 : 副詞（表示某種屬性超過所有同類的人或事物） most; best; worst; first; very; least; above all; -est
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 最優 : optimal; optimum最優策略 optimal policy; optimal strategy; 最優設計 optimum design; 最優值 optima...
  • 效率 : productiveness; efficiency; productivity; workpiece ratio
  1. We make the following assumption for when 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of least squares estimate have been discussed in many documents. considered 2 is nonnegative definite matrix, this thesis derives best linear unbiased estimate of parameter matrix b and estimable parameter function kbl under the meaning of matrix nonnegative definite and the property of maximum probability of blue is investigated. next, we discuss some necessary and sufficient conditions of the equality of the lse and blue, then we derive the estimation of the deviation bet - ween the least squares and the best linear unbias estimators of the mean matrix, meanwhile a relative efficiency of lse ofb is proposed and its bound is given

    當0時，眾多文獻討論了回歸系數陣的各種估計及lse的有效性，本文考慮了當0的情形，給出了回歸系數陣b及其可估參數函數kbl的在矩陣非負定意義下的最優估計（ blue ） ，研究了它的一個最大概率性質，並且討論了最小二乘估計成為最佳線性無偏估計的充分必要條件，在此基礎上給出了均值矩陣的最小二乘估計與blue的偏差估計，定義了lse相對于blue的一個相對效率，並給出了它的界。
  2. The modern technology give a chance for the pattern of transmitting knowledge with network, the course based on network have opened up it ' s way in china, our pursuer paid more attention to the mode, but in america, pursuer have studied the more width aspect, thereinto the investigation and design of the information in the course based on network is very important, for the design of the information decide the pattern how the student receive the information, which will effect the way of knowledge understanding and memory, and the way is related to the study pattern, so the design of the information in the course based on network is very important to the efficiency and effect. so the core of the paper is the investigation and design of the information in the course. i have the entropy from the information science as the analyse tool to analyse the information, these work tell us the efficient pattern to transmit information, based on the result, i design the net page, of course, study theory and the character of the net itself are also the factors i employ for design a good net page. then, links and navigation is constituted for students adapt to the course based on network

    當今技術的發展給知識以網路為媒介來傳播的學習方式帶來前所未有的機遇，網路課程在國內迅速開展起來，但是國內研究者的注意力主要集中在對網路課程模式的探索上，放眼國外，他們的研究觸角已經涉及到網路課程比較細致的方面，尤其是對網路課程信息的研究構成了國外網路課程研究中的比較重要的一個方面，而網路課程中信息的設計是重要的，因為信息的組織設計是為了接受者能對信息進行有效的信息加工，信息的呈現模式影響著學習者對知識的理解和記憶方式，進而決定了學習者的學習模式，因此網路信息的設計在網路課程傳遞的效率和效果中就佔有很重要的位置。基於這個觀念，本文把網路信息的組織設計作為研究的重點，引入了信息科學作為研究的主要工具對網路中的信息作以量化分析研究，主要應用了信息科學中信息熵的公式進行推導，得到學習內容信息組織的基本模式，並充分利用網路自身特性和學習理論對知識信息進行細致的設計，此外還對鏈接和導航信息進行了設計，在網路課程的適應性方面作出了努力，把交互信息與輔助學習信息的分析設計與應用和對網路頁面信息的總體調節優化作為主體信息設計部分的補充，最終形成了網路信息組織設計的方案，力求創設一個能夠有效傳遞知識信息，減少網路自身弊病，並帶有一定適應性的網路學習環境，也使更多的網路課程的設計者關注網路信息這個因素。
  3. First, we have expatiated the working principle, performance parameters and major technologies. farther, we have analyzed the shortcomings of the existing catalog search engine and introduced the clustering analysis and the ant algorithm ; on the basis of this, we discussed the possibility and necessity of the connection between them, which avoids the local optimization of the clustering analysis to a degree. in the end, we appraise the idea that we deal with the information data by the data structure of the binary tree, m - branch tree and tree established by the ant algorithm, which can improve the efficiency of the search engine

    首先闡述了搜索引擎的工作原理，性能指標，主要技術；分析了現有目錄式搜索引擎的缺點，接著介紹了聚類分析演算法與螞蟻演算法的理論，並論述了二者結合的可能性和必要性，這種結合方法也在一定程度上克服了聚類分析演算法容易陷入局部最優的缺點，最終提出了通過使用螞蟻演算法建立二叉樹、 m叉樹和樹作為信息數據處理的思想，大大提高了搜索引擎搜索的效率。
  4. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  5. Lastly, by philosophical analyzing the article draws conclusion : going on with efficient institutional change asks for dynamical grasping of path characteristic. so at present in order to advance the change the cumulative cost of institutional gradual change must be apportioned reasonably ; adjusting the change strategy wholly makes unitary institutional innovation accompanying configurable innovation ; switching institutional change mode neatly makes sure that the following change is efficient ; government ' s playing the leader role of institutional change makes adverse path dependency be got over and thoroughly resolves the shortage problem of effective institution

    最後，運用通觀全局、抓主要矛盾與矛盾的主要方面的哲學方法進行總結性分析，得出「繼續實現富有成效的制度變遷需動態把握路徑特徵」的結論，那麼，現階段應該對漸進式制度變遷的累積成本進行合理分攤，確保進一步變遷順利推進；從總體上調整制度變遷策略，形成由單項制度創新所引領的制度結構創新安排；針對變遷過程適時靈活轉換變遷方式，使變遷方式交叉復合、優勢互補，確保進一步制度變遷的效率；強化政府的變遷主體地位，以克服不利的路徑依賴，從根本上解決阻礙進一步變遷的有效制度缺失問題。
  6. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上，討論了幾種採用典型調制技術的短波數傳系統（如時頻調制、多進制頻移鍵控慢跳頻、 chess系統）原理、優缺點以及抗衰落和抗符號間干擾的性能；分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術；在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制，給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案，並通過計算機模擬進行了初部驗證。
  7. When both genes were co - expressed in e. coli, the activity of ppsa varied from 2. 1 - 9. 1 fold comparing to control, but the activity of tkta was relatively stable ( 3. 9 - 4. 5 fold ). whatever the two genes were expressed respectively or cooperatively, both could promote the production of dahp, the first intermediate of the common aromatic pathway, but co - expression was more effective on forming dahp and screened ppt - and ptp - as more effective. the results demonstrate that co - expression of ppsa and tkta can improve the production of dahp, and what ' s more, when multigenes co - expressed, the recombinant which has coordinated enzymes activity is optimum

    莽草酸途徑的最優化和整體調控基因csra的敲除正是上述改變的分子基礎，同時也為三種芳香族氨基酸的基因工程菌的構建打下了基礎; 7 .在國內外首次實現了共同途徑限制性底物關鍵酶ppsa刁無『及arog與分支途徑關鍵酶基因phea的串聯高效表達，所構建的重組質粒ptga ，其ppsa 、 tkta 、 arog 、 cm和pd的酶活分別比對照提高了3 、 2 、 2 ， 5 、 4 、 2 . 3倍，且其酶活比較協調一致; 8 .將ptga導入到篩選的基因敲除和基因替換菌株大腸桿菌31884 c甲b中，搖瓶發酵證實比以往所構建的基因工程菌株具有較高的phe產量和糖轉化率率，分別為0 . 448 %和22 . 4 % 。
  8. Energy conservation and and reformation of power plants " heat installation affect a lot on the efficient performance of opertion of power plant. pump and fan take a large proportion in power plant and resume much electric energy. so there is much energy conservation pationlity in them. and we should have strong tools and theories " support to reform them. we can combine the theory modeling and engineering design manufacture by the bussiness software such as fluent. in order to take full advantage of the powerful function of fluent and increase absolutely its conveniece and interaction, we should develop fluent secondly. this paper puts the idea firstly demostricly to substitute the performance test of pump and fan to get the integrative system of the optimization and computer aid design, and so we can increase greatly of the efficiecy and quality of the facility reformation. the main idea about the secondary development of fluent in this paper is based on the secondary development of gambit, the modeling and meshing s oftware of fluent, and simplify the modeling and meshing of gambit. meanwile, the data management base on web browser kind is adopted for the convenience of optimization and parameterization, and the journal files createdly recently can get new medeling and meshing files that can be used by fluent. so the designer can focus on the computer scheme and the result analysis without care the fussy designing and optimiziation. so we can increase greatly the optimization efficiency

    泵與風機在電廠中占較大數量比例，且消耗大量電能，節能潛力巨大，對其改造需要強有力的工具和理論支持，用商用cfd軟體如fluent可實現泵與風機改造中的理論模擬與工程設計製造間的結合。為了充分發揮fluent的強大功能，又能最大程度地提高其方便性與交戶性，應對其進行二次開發。本課題在國內首先提出對fluent進行二次開發，替代泵與風機性能試驗，形成一體化的優化、輔助製造系統，可大大提高設備改造的效率與質量，其主要思想是基於fluent的cad構體軟體gambit進行二次開發，簡化了泵的構體過程，同時，為了優化及參數化方便，採用基於webbrowser的數據管理方式，生成新的記錄文件同時產生新的fluent計算能識別的圖形網格文件，這樣就將設計優化者從繁瑣的圖形設計及優化中解脫出來，專注于對計算方案的確定及計算結果的分析，極大地提高了設計優化的效率。
  9. With fast development of our country " s gas industry and air ' s increasingly serious contamination in city, using gas instead of coal and supplying energy in high efficiency and cleanliness has become necessary way in city. there are different problems in the current heating ( air conditioning ) systems. in the cogeneration system, heat and power affect each other, heating - pump heating ( aie conditioning ) system can not satisfy the peak load very well, the cost of gas fuel in boilor heating sestem is so high. the high generating efficiency of the diesel - engine two - sourse heating ( air conditioning ) systems is limited in range of 100kw - 1000kw, the heating scope is so limited. combined cycle of two sourse heating ( air conditioning ) system is most suitable selection to buesness community with big scope my paper aim at this syetem ' s primary question when it is applied in our country - - - - bringing project into execution and technology economy feasibility and off - design performence, combined with a certain demonstrating project in beijing buesness community, going along with calculating and analyzing, drawing out some efficient datas and conclusions, based on this, bringing out primary alements affecting combined cycle of two sourse heating ( air conditioning ) system " economics

    熱電聯產系統熱電相互牽連，熱泵供暖（空調）系統不容易很好地滿足尖峰負荷，鍋爐供暖系統供熱中天然氣燃料構成的成本過高，內燃機雙源供暖（空調）系統的高發電效率僅限於100kw - 1000kw負荷范圍，供熱面積有限。對于大面積的商業園區、居民小區，燃燒天然氣的燃氣-蒸汽聯合循環雙源供暖（空調）系統是最佳選擇之一。本論文針對該系統在我國應用時的主要問題- - -方案的技術實施與技術經濟可行性，結合北京某一商業園區示範工程，進行了系統的計算與分析，得到了有效的數據與結論，在此基礎上，提出影響聯合循環雙源供暖（空調）系統經濟性的主要因素，並進行敏感性分析，得出有益的結論；最後通過各種供暖方案的比較分析回答了某些人對該系統的疑慮和不解，並指出系統的優化方向。
  10. Markush coding is divided into 3 layers, i. e. natural language layer, formal language layer and extended connectivity table representation layer, to ensure the consistency of markush sructures and the recorded structures in database files. corresponding to the 3lcm, a concept of 2 level documents is adopted. based on these ideas, a set of software named msiis ( markush structure integrated inputting system ) is being developed to process chemical patent documents automatically

    在注重提高族性結構數據庫系統的一致性和檢索效率的原則下，設計了族性結構加工處理方案- - msiis系統，該系統通過建立族性結構三層編碼模型（ 3clm ）和兩級文檔存貯編碼，有效地保證了數據庫數據記錄與源文檔的一致性；通過對初處理文檔的優化編譯? ?即在最佳展開點展開族性結構? ?生成具有高檢索效率的標準文檔，這樣在數據庫記錄中就保證了檢索的高效率。
  11. According to an analysis of the current various optimum methods, a new mixed type of genetic algorithm are proposed, which overcomes some typical limitations such as the decrease of hunting efficiency lack of hunting competence near the optimal solution. with a model for optimum design setup, the system brwcad are worked out with the advanced language visual basic6. 0 and the object - oriented technique

    此外，針對衡重式擋土墻常規設計存在的弊病，指出其優化設計的必要性與重要性，並在比較分析已有優化方法優缺點的基礎上，引入並提出了一種新型混合遺傳演算法進行優化設計，解決了臨近最優解搜索效率降低、搜索能力不足等缺陷。
  12. The engendering source of traffic volumes and their general influential factors have been presented, and the situation of nowadays highway transportation has been discussed. according to the introduction of traffic distribution theory and classical assignment method, analysis of traffic flow path selection among cities and that of special influential factors for traffic flow on toll highways, initial analysis to the forming mechanism of traffic volume on road sections has been made, and a probability model for path selection has been set up with the maximum - utility theory and disaggregating model. detailed analysis to impedances on road sections and their functions ( especially to three main composing factors of the impedances as cost of time, transport and toll and to the functional relations with traffic loads ) was made, at the same time, the relative cost calculating model was set up on the basis of the state - of - art achievements in both international and national researches

    主要研究內容包括：交通量的產生根源及一般影響因素分析和當前公路運輸地位討論；從交通分配理論及經典配流方法著手，通過分析城市間交通流路徑選擇行為和收費公路路段交通量特殊影響因素，初步提出路段交通量的形成機理，並採用效用極大原理和非集結模型理論（ disaggregationmodel ） ，建立用戶出行路徑選擇概率模型；對路段阻抗及路阻函數（尤其對行程時間費用、車輛營運費用和道路收費這三個構成路段阻抗的主要因素及其與交通負荷間的函數關系）進行較為詳盡的分析，並以現階段國內外較為先進的研究成果為依據建立相應的成本測算模型，其中，特別提出了兩種確定客貨車輛時間價值的分析方法；離散分析法和時間-費率轉換法，後者是在目前基礎調查、統計數據資料不夠齊全的現實下提出的一種確定道路系統內務車型時間價值的較為實用的新方法；對我國公路收費政策的背景和理論、實踐依據及費率的各種影響因素進行重點分析；從數學的角度證明合理費率的存在性，並以最優化理論為基礎，建立在普通收費公路和擁擠路段交通調控型收費公路兩種模式下合理費率的計算模型等。
  13. At first, this thesis analyzed the braking system theoretically, the structure, working principle and characteristic of braking force regulate fitting was expounded. second, based on the theoretical analysis, this thesis presents the braking force distribution optimization mathematics model and the braking performance computer simulation mathematics model. finally, a computer software was designed based on the mathematics model

    本文首先對汽車制動系統進行了系統的理論分析，詳細闡述了各類制動力調節裝置的結構、工作原理，並建立了其靜特性函數；然後，在理論分析的基礎上建立了汽車制動力分配優化設計數學模型和制動性能計算機模擬數學模型；最後以所建數學模型為基礎開發了汽車制動力分配優化與制動性能計算機模擬軟體，該軟體的開發成功可以大大提高制動系統設計人員的設計效率並獲得最佳的制動系統設計方案。
  14. This dissertation is faced to the process of steel rolling to found network of manufacture material flow, basing on it founding guide line evaluation system of the cost of unit standard producing working procedure, guide line evaluation system of the quality cost of unit standard producing working procedure and guide line evaluation system of performance and efficiency ; and base on the cost data of all kinds of material flows, manufacture flow, flux data, manpower, energy consume, material consume, capital asserts occupied, fund occupied, and the production in working procedure, throughput of the materials in working procedures in the flow and countercurrent flow in the network of material flow of recorded in working procedure producing, using the “ whole closed down lane ” model to describe network of manufacture material flow of steel rolling, found the cost analyzing model system of the network faced to producing process. make the cost increasing of the producing by abnormity material flow in working procedure, and even the cost increasing of the producing procedure as the cost of the management behavior of working procedure fallen under cost evaluation guideline in responsible working procedure, so as to ration measure the factors fast correlated with management behavior by measuring the cost

    在企業管理信息化輔助工具所建立的數據平臺基礎上，建立了以基準物流圖模型為基礎的軋鋼生產主流程物流網路拓撲圖，根據圖論的理論求解最大流量和最小費用;計算每個生產節點的加工成本，分離質量成本，克服了單純財務數據進行成本核算所帶來的缺陷;建立了軋鋼生產主流程工序含鐵物料吞吐能力基準圖模型，並根據此模型建立了軋鋼生產主流程工序激勵物流協調性和匹配性、工序響應物流協調性和匹配性分析的過程能力指數計算方法;通過引入決策單元綜合投入與綜合產出效率最優原則的模型和基於投入不變、分析產出是否有效或基於產出不變、分析投入是否有效的模型，實現了對多個績效指標在不同績效值集合之間的相對比較，並可根據投入產出效率準則、或者投入（產出）有效性準則進行排序。
  15. In a generalized approach for allocating network resources, a sealed auction model is proposed to make trade - off between economic efficiency and engineering efficiency. optimal auction mechanism is derived and applied to the fair share criterion of abr traffic of atm given the users and the network manger are all risk neutral

    在廣義的網路資源分配方面，提出了基於密封式拍賣達成經濟效率與資源分配效率折衷的思想，討論了一種使用戶盡可能聲明真實業務參數的計費策略，給出在用戶和網路管理者均為風險中性假設下的最優拍賣策略，並將其應用於atm的abr業務的公平共享準則。
  16. The people can apperceive the virtual environment of 3d simulated model developed by computers, carry the nc process of parts in virtual condition before the true doing when we design or alter a project, inspect the exactitude and justification of nc program, evaluate and optimize the project of process. thereby the intention, abridging the time of developing products, depressing the cost of manufacture, advancing the quality of products and the efficiency of production, can be finally achieved

    人能夠憑直覺感知計算機產生的三維模擬模型的虛擬環境，在設計新的方案或更改方案時能夠在真實製造之前在虛擬環境中進行零件的數控加工，檢查數控程序的正確性、合理性，對加工方案的優劣做出評估與優化，從而最終達到縮短產品開發周期、降低生產成本、提高產品質量和生產效率的目的。
  17. In this dissertation, the author, who hypothesizes that development - oriented poverty reduction model is most optimum in efficiency on condition that the chinese government implements a long - term development - oriented anti - poverty strategy, takes the factual implementing model of the strategy as his study object. in the light of the theories of developmental economics, interest group, game and power distribution, by employing means of normative analysis, system analysis, participatory observation, and methods of induction and abstraction based on a series of positive analyses of the poverty reduction practice and experience in rural china, he has successfully differentiated the concept of poverty - reduction in its broad sense and the one in its narrow sense and has advanced that the poverty reduction model in rural china is composed of four subsystems, namely the decision - making system, the transferring system, the reception system and the monitoring system. the four subsystems have distinctive principal structures and operating mechanisms, yet they correlate with one another closely and together make up an integral whole

    本文在中國將繼續長期堅持開發式扶貧戰略的前提下，假定開發式扶貧戰略效率最優，選擇中國農村開發式扶貧戰略的具體實施模式作為主要研究對象，運用發展經濟學的模式理論、利益集團理論、博弈理論以及地方分權等理論，在對中國農村扶貧實踐進行參與觀察、實證分析和理論抽象的基礎上，採用了規范分析、系統分析、案例分析等研究方法，從廣義扶貧模式概念出發，構建了一個相對完整的扶貧模式理論分析框架，將中國農村開發式扶貧模式具體分為決策、傳遞、接受、監控四個內部組織子系統，這四個子系統既有不同的主體結構和運行機制，又存在嚴密的內在關聯性。
  18. This provides the research with theory basis. secondly, this thesis establishes target system to evaluate international competitive power in service trade and apply this system to adjust the service trade competitive power of our country ; then analyzes the influence on service trade competitive power according to michael porter ’ s theory on national competition superiority and carries on the relevance analysis on various factors. at last, according to the analysis results, make out the strategy to improve international competitive power in service trade such as : cultivate high and specialized elements and promote the accumulation of personnel capital ; take domestic service demand seriously and impel urbanization construction ; enhance the utilization efficiency of foreign capital, and optimize the quality of resource endowment ; strengthen the supports from related industries ; encourage service enterprise to innovate and improve their competition ability ; reinforce the government ' s hatching function and so on

    本文首先闡述了服務貿易競爭力的相關理論，並說明了競爭力理論在服務貿易中的應用，這為本文的研究提供了理論依據;其次建立了測評我國服務貿易國際競爭力的指標體系，並運用該指標體系對我國服務貿易競爭力進行了評價及國際比較;然後根據邁克爾?波特的國家競爭優勢理論分析了影響服務貿易競爭力的各因素，對各因素與服務貿易出口進行了相關性分析;最後根據回歸分析的結論提出提升我國服務貿易國際競爭力策略:大力培育高等、專業要素，促進人力資本積累;重視國內的服務需求，推進城市化建設;提高外資的利用效率，優化資源稟賦質量;加強服務貿易相關產業的協調與支持;鼓勵服務企業創新，提高競爭能力;強化政府的孵化和輔助作用等。
  19. Finally, combining the two extraction methods with the two classification methods, the thesis put forward four models of palmprint recognition : k - l + ld model, k - l + nn model, nn + ld model and nn + nn model. the experiments show the accuracy, efficiency and the fault tolerance ability of these models. in terms of their characteristic, we can apply them in various fields

    論文把兩種特徵提取方法和兩種分類器設計方法進行結合，提出k - l變換與最小分類器、 k - l變換與bp神經網路分類器、線性神經網路與最小分類器、線性神經網路與bp神經網路分類器四種組合，最後對四種識別方法進行比較，根據它們識別的準確率、效率以及容錯能力對識別結果進行分析，總結出各種方法的優缺點，根據它們的特點，提出在不同方面的應用。
  20. The advanced development on the new kinds of scroll profile has become the research focus in the profile design. used a new type scroll compressor of the combination profile in this paper, a scroll is constructed following this : the inner turn consists of the standard involute of circle, and the same to the outer turn. then the middle turn is one of arc

    本文所研究的新型組合曲線渦旋壓縮機最內圈以基圓漸開線構成，中間段以圓弧過渡，最外圈由圓漸開線構成，能發揮不同型線的優勢，是一種能滿足多性能較優要求、形狀性態良好的渦旋型線，與傳統的基圓漸開線構成的渦旋壓縮機相比，具有效率高、泄露量少、體積利用系數大等優點。
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