中英
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- By contracting several databases , sql server 2000 is selected for the property database platform . then the structure and function of sql server 2000 are anatomized in the thesis . finally the structure of the route codes and the meaning of each data code are analyzed
通過對幾種數據庫的對比分析，從中確立了sqlserver2000作為本系統的屬性數據庫平臺，然后對sqlserver2000結構及功能進行了詳細的剖析，并完整分析了路線代碼的結構及各個數據代碼代表的意義。 - When the gsm based gate - way is designed and realized , the paper emphasizes the short message communication technique used in transmitting location data , involves short message actualization unit , protocol configuration , receiving / transmitting process , data pdu encapsulation , data coding , and so on
在系統gsm通信網關的設計與實現中，重點對系統中采用的短消息數據傳輸技術做了詳細的分析，包括短消息的實施單元、協議結構、收發(fā)過程以及信息傳輸過程中數據的pdu封裝等。 - The signal processing can ensure and improve the performance of plc , the main methods include filter , data coding , error correction , etc . firstly , the characteristic of power line channel is discussed from the transmission lines , noise , and channel attenuation in this paper
信號處理研究是為了保證電力線通信質量、提高其性能,主要的方法如數據編/解碼、糾錯、抗干擾處理等。本文首先從傳輸線特性、信道噪聲和信道衰減三方面分析了室內電力線信道的特點,并提出一種適合室內近距離的電力線載波通信方案。 - In this thesis , principles of data coding for transferring data among different network hierarchies is described , a channel and program management center and a user authorization center are designed , and the integration and application of the system into sdh / hfc network are investigated and implemented
本文對系統中支持不同網絡體系間數據格式的轉換的數據編碼原理進行了描述。設計了該系統頻道和節(jié)目管理中心以及用戶授權管理中心的構架，并對高速數據廣播系統在sdh hfc網絡中的集成和應用進行了較為深入的研究。 - At first , this article introduces the dicom information model and dicom network protocol architecture ; specify the definition of dicom service and object , message data coding , encapsulation of protocol data unite ( pdu ) and the mechanism of message exchange , etc . and then synoptically specifies protocol data unite , presentation data value ( pdv ) , encapsulation of various compose items and the class clusters for this program
本文首先介紹了dicom標準信息模型及其網絡協議構架,并且深入淺出地介紹dicom的服務和對象定義、消息數據編碼、協議數據單元pdu ( protocoldataunite )的封裝以及dicom消息的交換機制等基本原理。然后概括說明了模塊中的協議數據單元、表示數據值pdv ( presentationdatavalue ) 、各個組成條目的封裝以及在程序中為此定義的類簇。 - According to the trade criterion and the demand of spatial database building , refering to the special database of geological hazard and old database structure , at the same time , considering the specialty of geophysical prospecting data , the author standardizes twenty kinds of geophysical attribute database and the data code and the structure of data table
筆者針對地質災害空間數據庫建設的要求，結合已有數據信息標準的特點和結構以及地質災害勘查中物探信息的特點，對勘查中常用的二十余種物探方法進行了屬性數據庫的標準化建設。依照物探信息屬性庫數據項編碼規(guī)則，給出屬性表結構，并以地質災害勘查物探方法屬性庫結構為基礎，開發(fā)了數據管理模塊。 - Neural networks are used more frequently in lossy data coding than in general lossless data coding , because standard neural networks must be trained off - line and they are too slow to be practical . in this thesis , statistical language model based on maximum entropy and neural networks are discussed particularly . then , an arithmetic coding algorithm based on maximum entropy and neural networks are proposed in this thesis
傳統的人工神經網絡數據編碼算法需要離線訓練且編碼速度慢，因此通常多用于專用有損編碼領域如聲音、圖像編碼等，在無損數據編碼領域應用較少，針對這種現狀，本文詳細地研究了最大熵統計語言模型和神經網絡算法各自的特點，在此基礎上提出了一種基于神經網絡和最大熵原理的算術編碼方法，這是一種自適應的可在線學習的算法，并具有精簡的網絡結構。 - The jpeg compression algorithm takes one kind of highly effective static state image data compression algorithm . the widespread application of jpeg in multitudinous inserted in the type multimedia product the image data code and the decoding speed has already become a most important aspect which the restriction product performance enhanced
Jpeg壓縮算法作為一種高效的靜態(tài)圖像數據壓縮算法,廣泛的應用于眾多的嵌入式多媒體產品中,圖像數據編碼和解碼的速度已經成了制約產品性能提高的一個最重要的方面。 - Although stb just is a sort of terminal equipments of the tv signal transmission system , however pivotal technique involves the data demodulation , channel decode , transport stream de - multiplexing , audio and video signal decompression technique and real - time software technique with upriver data coding technique etc . therefore , software and hardware technology research and development of stb , which can increase usefulness with dependable of digital video signal and audio signal for study later make the theories preparation and backlog experience
機頂盒雖然只是數字電視傳輸系統的終端設備,但所用到的關鍵技術涉及到數據解調、信道解碼、傳輸流的解復用、音視頻信號解壓縮技術以及實時軟件技術和上行數據的編碼技術等。因此,通過對機頂盒軟、硬件的研究開發(fā),既能為以后研究如何提高信息傳輸的有效性和可靠性作理論上的準備,也為圖像信號和音頻信號的數字化處理積累經驗。 - Based on the super capability of gis , the paper discusses problems on layer management of related data , design of attribute tables , and data coding etc . the coefficient of the soil liquefaction resistance k and the coefficient of soil liquefaction hazard h are presented . the seismic sand liquefaction forecasting , liquefaction disasters forecasting , and prevention measures on liquefaction are also discussed . using the software of mapgis , the process of liquefaction database setup has been studied
本文基于gis在數據存儲管理及可視化方面的強大功能，研究了適合gis環(huán)境的液化評價相關數據的分層管理，屬性數據表設計以及圖元編碼等問題；并提出了土層抗液化指數k及砂土液化災害指數h兩個重要液化評價因子，在此基礎上進一步研究了地震砂土液化預測、液化災害預測以及防治處理信息系統建設等問題。
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