立方體展開圖 的英文怎麼說

中文拼音 [lìfāngtǐzhǎnkāitú]
立方體展開圖 英文
open cube
  • 立 : 動1 （站） stand; remain in an erect position 2 （使豎立; 使物件的上端向上） erect; stand; set up...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 體 : 體構詞成分。
  • 圖 : Ⅰ名詞1 （繪畫表現出的形象; 圖畫） picture; chart; drawing; map 2 （計劃） plan; scheme; attempt 3...
  • 立方 : 1. [數學] cube 2. [簡] （立方體） cube3. （立方米） cubic metre; stere
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. In the thesis. reading the iges file - 3 - and all the geometry entities and annotation entities are extracted ; on the base of geometry entities extracted, geometry entities are classified based to their three views. a new data structure is proposed to describle 3d form features ; inspection items of the workpiece are recognized ; the cmm - based inspection planning system is built ; on the other hand, as a part of cims, cmm need exchanging data with the software of cad / cam, so iges export interface is developed based on iges standard. in order to show the whole information of the surface, the 3 - dimensional free - form surface is drawing using the opengl

    通過讀取iges文件對實體進行分離、提取、識別出對工件進行描述的原始信息；在此基礎上，西安理工大學碩士學位論文提出一種優化演算法對三視圖自動進行分離，建立了一種對工件進行三維描述的數學模型，照此模型對工件進行立體重構；識別出工件的各種檢測信息，提出一種對公差信息進行描述的數學模型，井與三維立體相結合，生成有檢測意義的三維實體；根據三坐標機的測量系統，生成相應的檢測規劃；另一方面，作為cmis的一部分，應具有與cad cam軟體之間的數據交換功能，本文還開發了iges輸出介面，採用opengl繪制三維空間曲面，向用戶展示其全面信息。
  3. First, the author reviewed the related literature of asset securitization, explained the connotation and the economical significance of asset securitization from many angles, analyzed several essential technologies of asset securitization through using the enterprise financing theory, the financial theory, the system economic theory and the law of averages, constructed a flow chart to analyze the structure and the flow of the operation of asset securitization ; then the author analyses the overseas development tendency as well as the overseas concrete procedure of non - performing loans securitization, proposed several enlightenment ; once more, the author analyzed our country ’ s feasibility of npls, then elaborated emphatically the operation thought of npls of our country commercial bank : regarding the establishment of spv, thought that it most suit the our country current national condition current through pouring the capital to adopt company spv the pattern in our country by the national property management company, and elaborated how to construct and manage the property pond, put forward many kinds of ways of credit enhance for non - performing loans, thought it is the best choice that the product of npls is designed for cmo, the senior bond adopts the public issue, the secondary bond adopt private issue

    首先，本文回顧了資產證券化研究的相關文獻，從多個角度闡釋了資產證券化的內涵和經濟意義，運用企業融資理論、金融理論、制度經濟學理論和大數定律剖析了資產證券化的幾項關鍵技術，構建了一個資產證券化流程圖來分析資產證券化運作的結構與流程;接著通過分析國外不良貸款證券化發展趨勢以及具體做法，提出了幾點啟示;再次，分析了我國不良貸款證券化的可行性，然後著重論述我國商業銀行不良貸款證券化的運作思路:對于spv的設立，認為在我國由國家資產管理公司注資採取公司型spv的模式最適合我國當前的國情;並論述了資產池的構建與管理;提出了對不良貸款進行信用增級的多種方式;認為將不良貸款證券化產品設計為抵押擔保債券，高級債券採取公開發行，次級債券採取私募發行是最佳選擇。
  4. This essay is trying to use methods of systems analysis to compare and analyse ris in guangdong and guangxi. it contracts the present situation and features of ris in the development of regional economy. thus, we will truly understand, establish and improve ris, promote cooperation and combination of economy and technology between two provinces and realize the linking economic development in guangdong and guangxi, which it has not only the historical necessity, but also the great importance for guangxi to carry out the " develop - the - west " strategy, realize complementing each other, shorten the gaps between two provinces and push the process of economic integration in two provinces forward

    本文試圖運用系統分析方法對兩廣（廣東、廣西）區域創新系統進行比較分析，對比發達地區和欠發達地區的區域創新系統現狀和特點及區域創新系統對區域經濟發展的影響，以此真正理解，建立和完善區域創新系統，促進兩廣開展經濟技術協作與聯合，實現兩地經濟聯動發展，不僅具有歷史的必然性，而且對于廣西實施西部大開發戰略，實現優勢互補，縮小兩廣發展的差距，推動兩廣經濟一體化進程，具有極為重要的作用。
  5. Digital design platform using the " top - down " design methods, this product is the highest form of the component unit began as a component of the overall system to be considered according to their products in the mutual position, played the role and function of the realization of the establishment of such products constitute the graphic layout, through to design constraints, the key design parameters, such as design information capture products to concentrate on aircraft design intent, top to bottom to transmit design information products launched throughout the design process

    數字化機構設計平臺採用「自頂向下」的設計方法，這種方法是從產品構成的最頂層開始把組成整機的部件作為一個整體系統來考慮，並根據其在產品中的相互位置關系、所起的作用和實現的功能等建立產品構成的布局圖形，通過給定設計約束條件、關鍵的設計參數等設計信息，集中地捕捉產品整機設計意圖，自上而下地傳遞所給設計信息，展開產品的整個設計過程。
  6. Scientific computation visualization interactive virtual reality computer dynamic simulation etc., to study thoroughly and carefully on critical technologies such as mixed - language programming simplification of scene models displaying realistic image and animation of 3d scene models and so on in this dissertation, the methods to build scene models were studied and applied to develop a dynamic simulation system of 3d railway scene based on this idea, the major study contents and results can be summarized as follows : 1 ) mixed - language programming can complement each other between different programming languages and the method has a general significance and can become popular many computation models including development of dtm optimum of dtm and reorganization of dtm were developed with fortran language in order to use the ripe codes, the dissertation succeeded in integrating the developed fortran codes to the visual c + + environment and achieving the course of mixed - language programming 2 ) the methods to build scene models for 3d location design were discussed in the dissertation and the development and animation of scene models had been realized by applying synthetically those technologies such as computer graphic computational geometry and geometrical modeling and computer dynamic simulation etc, and adopting opengl 3d graph library then achievement was got by using the technology of 3d visualization to livingly express design results 3 ) combing with the concerned study and development projects, adopting vc + + as development tools and in the light of those theories and algorithms stated in this dissertation, a software, which could build scene models with realism for 3d railway location design, in the name of " the dynamic simulation system of 3d scene of railway " was developed., the correctness was proved by using the software to build the 3d scene models and achieve their animation of suining - chongqing railway and yunnan - xizang railway

    本文綜合利用計算機圖形學、科學計算可視化、人機交互、虛擬現實、計算機動態模擬等理論和技術，針對混合語言編程、真實感圖形繪制以及三維景觀模型的動畫驅動等關鍵技術，進行了深入細致的研究，從而探討了建立逼真景觀模型的方法，並基於本文提出的方法研製了一個鐵路線路三維景觀動態模擬系統。基於這一思想，本文主要研究內容及研究成果如下： 1 ）混合語言編程可以實現語言優勢互補，具有普遍意義。針對數字地面模型的建立、優化、重組等計算模塊是成熟的fortran程序代碼，本文成功實現了vc + +與fortran語言的混編； 2 ）緊緊圍繞三維選線設計中景觀模型的建立方法展開研究，綜合利用計算機圖形學、計算幾何及幾何造型學以及計算機模擬技術，採用opengl三維圖形庫，實現了景觀模型的建立以及動畫驅動，使得三維可視化技術成功應用於選線設計成果的三維直觀表達； 3 ）結合有關科研課題，利用vc + +開發工具，以本文所述的理論和演算法為基礎，研製和開發了一個建立三維選線設計逼真景觀模型的系統軟體- - 「鐵路線路三維景觀動態模擬系統」 。
  7. Following the development trend of valve cad, according to the requirements of the chengdu chengfeng valve limited company and based on mdt, this article develops the 3d parametric valve design system. the main work and achievements are as follows : based on the 2d engineering drawing of the several different valves the company provided, the 3d parametric basic drawing - base is set up using mdt which is a 3d design platform, including all the parts drawings and the general assemblage drawings of the valve models ; in accordance with the common steps of the valve design, the parameter editors are designed to edit, import and export the valve parameters and are provided with the function of double synchronization on parameters displaying for convenience in use ; in order to meet demands of users and make the design more accurate, reliable and practical, the assistant formula calculators are developed, which can automatically do all types of structure calculation in the procedure of valve design, and export the calculation manual of valve design ; in order to make designers more rivalries, taking full advantage of internetmntranet technology, the virtual design center is developed, which integrate netmeeting, terminal service and super links, so that the designer can directl y use applications on remote server, communicate with other designers on intranet / internet, share software resources and realize long - distance cooperative design

    根據閥門cad發展趨勢，針對成都乘風閥門有限責任公司閥門設計現狀，本課題基於mdt三維設計平臺開發了閥門三維參數化設計系統，主要完成的工作和成果如下：根據公司提供的幾種不同結構閥門的二維工程圖紙，利用mdt三維設計平臺建立了三維參數化基本圖形庫，其中包括所有零部件和總裝配模型圖及二維工程圖；依照閥門設計的一般步驟設計了參數編輯器，用來對閥門尺寸參數進行編輯、輸入、輸出等，具有參數雙向同步顯示功能，使用十分靈活方便；根據用戶的需求，為了使設計達到精確、可靠、實用的要求，設計開發了輔助計算器，能自動完成閥門設計過程中所需的各種結構計算，並可以輸出閥門設計計算說明書；為了使設計人員更具有競爭力，本系統利用internet intranet技術設計開發了虛擬設計中心子模塊，虛擬設計中心集成了網路會議、終端服務、超級鏈接等功能，可以讓設計師直接使用服務器上的應用程序，與intranet internet上的其他設計專家進行交流、共享軟體資源，實現遠程協同設計。
  8. Engineering drawing has always been labeled as a practical subject. a combination of geometrical, building. mechanical and electrical drawing, it relates between theory and the picture of reality. engineering drawing will provide an accurate and complete ptcture for every object tn terms of shapes and sizes. usually, it is taught using the face - to - face teaching mode even in an odl environment. due to its nature, some students may find difficulty in imagining and interpreting the drawings. however, the availability of sophisticated technology provides the opportunity for the learning of engineering drawing to be enhanced via online. a web - based system for teaching and learning engineering drawing was developed based on a constructivism model. the web - based system is tailored for several topics of engineering drawing such as orthographic projection, sectional view, isometric and oblique drawing at the secondary level. the learning strategy consists of multiple phases beginning with introduction, concept learning, engineering drawing method, application and exercises. during introduction, students will be exposed to an overview of the topic followed by learning of specific concepts. the system provides a learning environment that allows engineering students to view objects from different angles, such as third angle projection and first angle projection as well as views of plans, side and front elevations. after learning about the concepts, students wilt be guided through the various steps in drawing methods for each topic via animations and simulations. learners are able to view any section repeatedly. examples of real application of engineering drawings were also given using graphic, animations and video. to evaluate students understanding, exercises were given at the end of each session

    工程制圖一直被認為是一門實踐性學科，其整合了幾何學、建築、力學、電子制圖等，從而將理論與現實圖像聯系起來，工程制圖能為每個不同形狀、尺寸的物體提供精確的、完整的圖像.通常，即使在開放與遠程教育環境中，工程制圖的教學也是通過面對面的教學模式來進行的.由於其特殊性，一些學習者可能難以想象並解釋這些圖像.然而，尖端的技術使得可以通過在線的方式加強工程制圖的學習.研究者基於建構主義模式開發了一個面向工程制圖教學和學習的網路系統.該系統適用於幾種工程制圖，例如展開圖、刻面圖、等角圖和斜角圖.學習過程包括導論、概念學習、工程制圖方法，以及應用與練習等階段.在導論階段，系統為學習者提供了專題簡介，然後是概念學習階段.系統所提供的學習環境允許工程專業的學生從三維透視、一維透視、平面圖、側立面、正立面等不同角度來觀察物體.經過概念學習階段后，系統將引導學生通過動畫和模擬學習每個專題中制圖方法的不同步驟，學習者也能重復觀察任何剖面.另外，還通過圖像、動畫和視頻等方式展示真實的工程制圖應用案例.最後，為了評價學生的理解能力，在每部分內容後面都附有相關的練習
  9. The main work and achievements of this thesis are as follows. 1. a hardware platform of binocular stereo measuring system with simple structure was built with low cost, which consists of ccd cameras, lens, a frame grabber card, a computer and a tripod

    本文就這方面內容展開研究，主要研究內容和成果如下: 1 .以較低的成本建立了一個結構簡單的二目立體測量系統的硬體平臺，主要包括ccd相機和鏡頭，圖象採集卡、計算機、三角架。
  10. On the basis of analysis and study of the problems lying in the zhujiang river ' s waterway transportation development, and combining with the reality of the zhujiang river ' s waterway transportation and market economy ' s requirements, this chapter puts forward the implementation of the strategy of " the west big exploitation " and sustainable development, amending and formulating the overall scheme for the development of zhujiang river ' s waterway transportation and investigating countermeasures and methods for speeding up the development of the zhujiang river ' s waterway transportation, making good comprehensive use of water resources, smoothing relationship between river ' s constructor and management authority, establishing integrated management organization for the valley ' s water resources, putting greater investment of funds into fundamental facilities in inland waterway, bringing into full play of inland waterway transportation, speeding up standardization of ship ' s form and steps of information construction, improving competition ability of waterway transportation by the progress in science and technology, deepening reform in management system and setting up a waterway transportation market of openness, fairness and standard

    論文在對珠江航運發展存在問題分析研究的基礎上，結合珠江航運的實際及按照市場經濟的要求，提出了貫徹落實西部大開發和可持續發展戰略，修改制定珠江航運發展的總體規劃，研究加快航運發展的對策和措施；搞好水資源綜合利用，理順河流開發建設和管理方面的關系，建立流域水資源綜合管理機構；加大內河航運基礎設施建設資金投入，發揮內河航運的優勢；加快船型標準化及信息化建設步伐，以科技進步來提高航運的競爭力；深化管理體制改革，建立公開、公正、規范的水路運輸市場環境等對策和建議。論文對珠江航運發展進行了展望，分析了為實現全面建設小康社會，珠江航運面臨的任務，描述珠江航運的發展目標及宏偉藍圖。
  11. With the development of the electrical power enterprise and computer technology, it is important to design a highly efficient ， better maintainable and graphic interface based software package for power system analysis and computing in the paper ， the author put forward a kind of new sensitivity analytical method which take into account load characteristic to fix on the weak bus, and with example to prove the exactness of the algorithm ; developed the visual electrical power system analysis and computing and graphic sporting system, the software package was developed by using the idea of object oriented programming ， the method of class ' s inheritance ， polymorphism and virtual function, and set up equipment - chart element - the interreaction between class this make it easy to expand, maintain and replant

    隨著電力事業和計算機技術的發展，研製高效率、可維護性強、具有良好用戶界面的圖形化計算分析軟體成為電力系統分析計算研究的重要任務之一。本文提出了一種計及負荷特性的靈敏度分析方法來對薄弱母線進行確定，並用算例驗證了演算法的正確性；開發了圖形化的電力系統分析計算軟體和圖形支持系統，該軟體完全採用面向對象的設計方法，充分利用了類的繼承、多態性質和虛函數的方法，建立起設備圖元類之間的相互關系，使軟體具有高度的開放性、可維護性、可移植性。
  12. Lastly, it raises some principalmethods on how to further the reform of our country ' s book distribution, which areto adjust and improve the structure of book distribution, to establish modemmarketing network system, to change the relationship between presses andbookstores, to make publishing and distribution goes well, to change the function " and establish a new pattern of book distribution management, to abide by the rule oflaw in order to construct a good background of book market, and to train andexploit talented persons of book distribution. one of the originality of this thesis is that the topic is very new the reform ofpublishing field, to be exact, began with the reform of book distribution

    最後從六個方面提出了深化圖書發行管理體制改革的主要途徑，即加大工作力度，調整和優化圖書發行產業結構；以連鎖經營為突破口，建立現代化營銷網路體系；調整社店關系，實現出版與發行的雙贏：轉變職能，建立圖書發行管理新模式；厲行法治，創造良好的圖書市場環境；樹立人本觀念，做好圖書發行人才的培養、開發和使用工作。本文的創新之處，一是選題富有新意。出版領域的改革，嚴格來說是以圖書發行管理體制改革為切入點而逐步展開的。
  13. Based on the characteristics of the geological exploring data, a method for establishing data model was presented, in which the triangle network was combined with the quadrangle network. at last, the geologic maps needed for geological research were drawn through the gdi ( graphics device interface ) and the 3d visualization system model was established for stratumtous geological body. base on the achievments mentioned above, a software system was developed which can be used independently without relying on any software platform

    文中首先介紹了可視化技術以及地質制圖技術的發展，然後對地質構造可視化模型進行了研究，根據地質測量數據的特點，提出了三角形網和四邊形網相結合的數據建模方法，最後通過圖形介面繪制了地質研究所需的地質圖件，構建了層狀地質體三維可視化系統模型，並開發出了可以獨立於任何軟體平臺使用的地質三維可視化軟體系統。
  14. This article try to use theory and practice of difference brand to establish a health - care food brand, analysis difference brand - position, abstract core - value, establish brand - identify, make difference brand work plan, research on brand - position, core - value management and brand - identify, offering a way to help those enterprise confront morass on manage brand stratagem this article emphasis on that analysis environment of enterprise, analysis customer, product and competitive, to implement difference brand - position base on brand ' s functionality and sensibility difference, and apply difference brand - position to actualize brand ' s core - value by product - identify, enterprises - identify, individuality - identify and symbol - identify, make a plan of difference work, ultimately achieve a specific position to suit target customer

    本文主要針對企業在實施品牌差異化戰略過程中，品牌差異化定位以及與此密切相關的品牌核心價值管理和品牌識別管理的基本理論和方法展開嘗試性研究，通過筆者為一個保健品品牌實施品牌差異化的研究案例，將品牌差異化戰略的理論和實踐密切結合，分析品牌差異化定位、提煉品牌核心價值、建立品牌識別體系、制定完整的品牌差異化推廣方案，力圖為面臨品牌創建困境的企業提供一條可借鑒的思路。
  15. It also sets forth the view that libraries play a positive role in developing the northeast economy, which is based on the principles ? taking advantage of information technology promotes industrialization and in retune making use of industrialization spurs information technology ? given by the 16th national congress of the communist party of china. with the theories of regional economy and library science, the paper remarks upon those problems lie in irm serving the development of the northeast economy. and then it is stresses the hidden functions of library resources and in the long term how to realize the development of both the northeast economy and the library cause under the leadership of the party central committee

    本文介紹了信息資源管理作為一門新興學科領域的沿革與發展，立足於黨的「十六」大指出的振興東北經濟，要走「以信息化帶動工業化，以工業化促進信息化的新型工業化發展道路」精神，闡述了圖書館在振興東北經濟中的作用，並用區域經濟理論與圖書館學理論相結合的方法，研究在振興東北經濟中，圖書館信息資源管理存在著信息資源管理人員素質不高;資金投入不足，技術設備落後;信息資源少，結構趨同、質量不高;管理手段不完善，缺乏專門的信息資源管理機構等問題，並針對問題提出了更新思想觀念、提高信息資源管理人員素質;增加對圖書館資金投入，完善信息資源管理手段，合理配置、深入開發信息資源;組建專門管理機構、創新信息資源共享體制;創新信息服務方式等對策。
  16. It ' s inclined to the plaintiff or the defendant ? this text regards development of the american - european product liability law as the basis, attempt to use the menthods, such as, analytic approach of value, historical analytic approach, the case kw and comparative law, etc. analysing and probing into its theoretical foundation and value orientation, we should not only adhere to the modification of concrete clause, nor imitate foreign blindly, but really understand its marrow, guide the practise of legislation and justice of our country. develop and perfect the product liability law of our country further, hold the equalization points of justice and efficiency, rights and function correctly

    透過法律條文的表面去探求制度深層的必然性和內在的基本使命，本文以歐美產品責任法的發展為依據，試圖運用價值分析法、歷史分析法、判例法和比較法等方法，分析探討產品責任制度的理論基礎和具體內容，尤其是制度立足其上的理論基礎和價值取向，這樣才能站在理性的高度從宏觀去把握，以一種開放的姿態去面對現實的挑戰，而不是僅僅拘泥於對具體條文的修改，也不是盲目的照般國外的，真正領會歐美產品責任制度的精髓，並以此來指導我國的立法和司法實踐，進一步發展和完善我國的產品責任法，正確把握公平與效率、權利和功用的平衡點。
  17. On the basis of analyzing the respective development and current situation at home and abroad of cad / cae / capp technology, this paper brings forward the research direction - integration and intelfectualization combining the expert system. by the analysis of the characteristic and restriction of the gear components, this paper upbuilds the characteristic model based on the restriction and actualizes data transmission and information sharing among cad. cae and capp. this paper analyzes the general principle of parameter determination and strength check about gear and researches the algorithmic of gear strength check based on the characteristic. this paper introduces expert knowledge into respective procedure of cad. cae and capp and actualizes the intellectualization in design process. strength analysis and process planning. on the basts of aforementioned research. this paper develops the cad / cae / capp integration software of gear components by means of the active - automation technology provided by autocad and vb and conducts the integration with general mechanical and shaft components integrated designing system. the application of the software indicates this system has perfect function and project applied cost

    本文在分析國內外cad cae capp技術各自的發展歷史與現狀的基礎上，結合專家系統，提出了智能集成的研究方向。以齒輪類零件作為研究對象，在分析了其特徵及約束的基礎上，利用數據庫技術和圖形單元建模技術，建立了基於約束的特徵模型，實現了cad cae capp之間的數據傳輸和信息共享；分析了齒輪參數確定、強度校核的一般原則，進行基於特徵的齒輪強度校核的演算法研究；將專家知識融入在cad 、 cae 、 capp各個過程中實現了設計過程、強度分析和工藝分析的智能化。在上述研究的基礎上，利用autocad2000提供的activexautomation技術，以vb為開發工具，開發出了齒輪的cad cae capp集成軟體，並與其它機械通用件設計系統進行了集成。
  18. " digital land " project posed by national land resources ministry in land and resource survey, is another information project after " digital earth ". this indicates resource information management has been one of the important subjects in present science and technology fields. the mineral resources are an important part of national land resources. they are one of the most basic and important production data which the human beings rely on for existence and develope by. and also are the matter foundation of national economy and society development. thefore, it ' s very significant to promote rationally developing and utilizing the mineral resources by changing the traditional management method, applying the modern information technology to establish the mineral resources management system. geographic information system is just a comprehensive information technology capable to store, manage, analyze and display spatial data, and its powerful spatial query and spatial analysis function have been used in both natural and social sciences, especially in the field of the national resources management. on gis platform, the article studies the designment and development of the mineral resources management system in yulin, and probes into an information method of the mineral resources management in theory and practice

    地理信息系統正是一門對空間數據的存儲、管理、分析、顯示的綜合性技術，其強大的空間查詢與分析功能已被廣泛應用於自然科學與社會科學，尤其是在國土資源管理領域中。為此本文以gis軟體為平臺，開展了榆林礦產資源信息管理系統的設計與開發工作，在理論和實踐上探討一種礦產資源管理的信息化方法。文中在分析了系統功能需求的基礎上，建立了圖形數據與屬性數據兩類相結合的數據庫，實現了圖形數據庫中內部屬性表與屬性數據庫中外掛屬性表的連接，將圖形數據與屬性數據統一存儲、處理和分析，可對礦區已有資料實施信息化管理。
  19. A survey was conducted in 34 public libraries in china on their establishment of website, virtual reference service, reference desks, digitization and the mode of their virtual reference service. this article describes the status of virtual reference service of public libraries in china, and presents pieces of reasonable advices on current problems

    網上走訪34家國內公共圖書館，通過調查各館的網站建立情況，網上參考咨詢服務開展情況，咨詢臺的設置，網上咨詢服務的方式以及館藏數字資源的建設，大體上反映了目前國內公共圖書館網上參考咨詢服務的狀況，並就現存的問題提出一些合理化建議。
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