A stable and fast growth in the country's economic situation， the formation of highway network is Among them， ganyue expressway is one of the network planning highways significance of traffic This project is ganyue expressway of ganzhou taihe road to a stage of a working drawing In June， Ⅳ sections to subtropical monsoon climate， mild climate， rainfall， sufficient Design for 42 m， starting elevation Destination for 31 m Located in the west bank， gan along the landform features is low， the terrain for meteorological north jiangxi hills， mountains and steep low-alcohol volatile In the design， the first in 1:2000 topographic map route schemes， determine three respectively in graphic design， after the completion of the plan of the preliminary scheme selection and selected two optimization， Then again， the scheme design and cubes， and ultimately selected optimal scheme， Then cross-sectional design， construction， transportation facilities along the cross-sectional design design etc， which include subgrade pavement， drainage design Road is first in three different scheme design scheme， then select the optimal than road Design concept is always in order to ensure safety， comfort， and quickly as possible， under the premise of small quantities， low cost， operation cost， provinces， benefit and construction and maintenance in quantity is increased， as far as possible， by higher design index， In the design scheme for more than， the optimal scheme based on selected， Design and construction photograph with the basic farmland， try to make less cultivated land， and try not to GaoChanTian accounted for， On the engineering geology and hydrogeology， out of road engineering， For bad geological location， try to avoid around， when must pass through， choose appropriate location， narrow scope， and take necessary through the engineering Pays attention to environmental protection， adjust measures to local
Absract: On May 12th 2008， there was a big earthquake happened in WunChuan， SiChuan This disaster deprived of millions of people’s life， destoried many families， budlidings and their It is not aware of the man’s weakness before the nature untill the natural disaster attacked our It must take a very long time to smooth sadness that the disaster bring to And at the same time， this disaster also made the survivals and our Chinese more 93 square was built to remember the passed life during the disaster， to remember the survivalswho fought for this ， and to agglomerate all Chinese people’s determination to rebulit This case combine the local physiognomy features with slopes and water surface， make two different scenes compare-- simulate the nature physiognomy’s hill and water surface， and exquisite flat sight， this intensively shows the different situation before and after the In this cae， I make the time 14:28 book and deepen， in the clock square simulant angle was 93 when at 14:28， and this can see out throughout the case， and let people realize the meaning of life in this We can discuss the humanity of the square from time and from ，this square can make people have feelings on history， life and nature through Key words: 93 memory sight time and space
The graduation project aimed at constant tension release strip volume control， to explore a magnetic brake components for the implementation of the strip tension take a closed-loop volume control Programs include tension controller and magnetic powder brake drive Tension Controller is the key to the whole Volume in Strip the process of release， because too much tension will affect the fluctuations in product The requirements of tension control is put in the whole volume should be maintained in the dynamic process of constant Tension controller design， the use of operational amplifiers for the core components of the PI control Tension sensor to detect the use of strip tension， so that the value of detected tension and tension values set by the tension of the PI controller operation， the automatic adjustment of the excitation voltage magnetic brakes， so that the process of put volume to achieve constant tension Because the release of volume changes in wheel diameter 10 times in the scope of the general， it is through simulation analysis， to prove Drive Tension Controller in volume within a certain range of the Strip will still be able to better control the Through the simulation results and then determineTension Controller component Magnetic brake driver circuit design， is dedicated PWM chip， MOSFET devices for power-driven posed by single-quadrant PWM DC Design and Implementation of the volume of the release process of the better strip tension control， help improve the quality of
翻译如下：Because of this very long term and involve a number of professional， so if the problem can be put in place of professional terminology in Chinese， I find the teachers back to solve， other translation you help I study foreign languages to English-illiterate， this is the thesis， is very important to me， it refused to use translation software， I hope not to deceive me， Abstract Digital elevation model (DEM) is a regional land surface digital elevation above sea level of expression， is a digital landscape Since the 50's since the 20th century， concern DEM， DEM has a show because of the diversity of terrain information， the accuracy of a constant， real-time data updates， easily， it is widely used in mapping and remote sensing， civil and hydraulic engineering， agriculture， forestry， planning， scientific research ， military， business and other DEM's that are mainly three types of methods， that is， the rules of the model grid， triangulated irregular network model and contour At home and abroad have already triangulated irregular network (TIN) algorithm to generate the depth study has been A large number of experts and scholars on the construction of Delaunay TIN to a large number of studies and several more mature algorithm: sub-rule law， point by point insertion method and triangulation method， such as growth， is now more commonly used algorithms and by sub-rule insertion When large amounts of data， efficiency is lower， since the late 80's has been rarely used; division algorithm using the recursive algorithm as a result of a large number of computer demanding， the traditional point-by-point insertion method when large amounts of data ， less time complexity， configuration network is Usually make use of discrete points often encountered when building a TIN need to carry out a large-scale regional digital terrain modeling， since a large amount of data， the traditional point-by-point insertion method and the existence of conformation of the drawbacks of slow network is not conducive to rapid and efficient In order to solve this problem， we need to point by point insertion method to conduct in-depth research， analysis point by point to the existence of the shortcomings of insertion， thereby to improve the This paper summarizes the Delaunay TIN at home and abroad to build a variety of algorithms， and analysis of the advantages and disadvantages of various algorithms， focusing on the insertion point by point， point by point summary of the principle of insertion， data structure， such as algorithm Insertion point by changing the order of its search and reduce the number of triangular configuration to improve network speed， the final results show that an improved method to calculate point by point insertion speed is ten times the original algorithm， an effective solution to the insertion point by point time complexity than poor， very slow network configuration Improve the use of simple data structure， clarity of the computing process to ensure the practicality of changing This article has the following characteristics: Algorithm to improve the speed of the network structure Cryptographic point interpolation Insertion point coordinates so as to reduce the sorting speed of the search triangle Net automatically display， and can show the order of insertion point Procedures， simple operation 【Keywords】 insertion point by point， digital elevation models， triangulated irregular network (tin)， Delaunay triangulation希望能帮助到你！good luck !
