This paper explores multi - resolution modeling and algorithms implementation of the large - scale terrain environment , and designs and establishes a prototype system of virtual terrain environment system 本文研究分布式大型虛擬地形環(huán)境的多層次建模、算法實(shí)現(xiàn)以及虛擬地形環(huán)境的原型系統(tǒng)研發(fā)與初步試驗(yàn)。
The . net framework sdk allows computer administrators to configure the default cryptographic algorithms and algorithm implementations that the . net framework and appropriately written applications use . net framework sdk允許計(jì)算機(jī)管理員配置默認(rèn)加密算法和算法實(shí)現(xiàn),供. net framework和正確編寫(xiě)的應(yīng)用程序使用。
Since speed is often a concern for genetic algorithm implementations , and thus they must be heavily optimized in most cases , there are few viable general - purpose genetic algorithm toolkits in any language 因?yàn)樗俣瘸3J沁z傳算法實(shí)現(xiàn)的一個(gè)問(wèn)題,因此在大多數(shù)情況下必須對(duì)算法進(jìn)行大量?jī)?yōu)化,幾乎沒(méi)有以各種編程語(yǔ)言實(shí)現(xiàn)的可行的通用遺傳算法工具箱。
Based on the analysis on the concurrent processing performance requirements of monitoring system , a priority queuing algorithm is proposed to realize the concurrent scheduling of vehicle monitoring system with the algorithm implementation scheme given 在對(duì)監(jiān)控中心并發(fā)處理的性能要求進(jìn)行分析的基礎(chǔ)上,提出了優(yōu)先數(shù)事件隊(duì)列算法來(lái)實(shí)現(xiàn)車輛監(jiān)控中心的并發(fā)調(diào)度機(jī)制,并給出了算法實(shí)現(xiàn)。
Classic automatic systems for fingerprint comparison are based on minutiae matching . they almost involve time - consuming fingerprint image ' s pretreatment , which is very complicated algorithm implementations and need advanced hardware , so it is difficult to popularize 傳統(tǒng)的自動(dòng)指紋比對(duì)系統(tǒng)是基于細(xì)節(jié)匹配的技術(shù),需要進(jìn)行復(fù)雜的圖像預(yù)處理,算法復(fù)雜度高,耗時(shí)較長(zhǎng),不易硬件集成,因而有一定的實(shí)用局限性。
Chapter 3 treats the algorithm implementation of demodulator in the receiving asic of dvb - s . in detail , demodulation includes carrier recovery and symbol synchronization . together with the transmission characterization of band - limited input signals the chapter proposes a scheme for implementing carrier recovery loop 解調(diào)具體分為載波恢復(fù)、時(shí)鐘同步兩大部分,本章著重論述了載波恢復(fù)的原理并結(jié)合dvb - s輸入信號(hào)傳輸特性,提出了相應(yīng)的實(shí)現(xiàn)方案,對(duì)部分電路進(jìn)行了性能分析。
First , the author makes some obvious improvements on algorithm implementation for protocol design , which has distinct advantages over the original fair document exchange protocol with aspects of security and applicability . secondly , the integrated protocol implementation is accomplished in detail based on java 2 platform ( take the document exchange protocol as an example ) . thirdly , during the process of the protocol implementation , the paper also puts the emphases on considering the multiple achievements of message queues and relative comparison on working function , which provide the secure and stable mechanisms for the protocol applications 本文的貢獻(xiàn)有以下三個(gè)方面,首先,在初始的文件交換協(xié)議的基礎(chǔ)上,在安全性及適用性方面對(duì)該協(xié)議的算法提出了較大幅度的改進(jìn)和完善,提出了改進(jìn)后的文件交換協(xié)議版本v1和v2 ;其次,本文作者提供了基于java2平臺(tái)上的具體完整的協(xié)議實(shí)現(xiàn);然后,在協(xié)議實(shí)現(xiàn)的過(guò)程中,本文還重點(diǎn)考慮了消息隊(duì)列的多種實(shí)現(xiàn)方式及相關(guān)性能比較,為協(xié)議的應(yīng)用提供安全穩(wěn)定的實(shí)現(xiàn)機(jī)制。
We have studied pretreatment of fingerprint images with experiments , including all the algorithm implementations of the normalization of fingerprint image , estimation of orientation and frequency field , fingerprint image enhancement , extraction of fingerprint ridges , and thinning of fingerprint ridges . the result can be accepted 本文對(duì)指紋預(yù)處理進(jìn)行了實(shí)驗(yàn)研究,編程實(shí)現(xiàn)了指紋圖像歸一化,指紋圖像方向場(chǎng)的計(jì)算,頻率的計(jì)算,指紋圖像的濾波增強(qiáng),指紋圖像的紋線提取(二值化) ,紋線細(xì)化。
The thesis analyzes and implements the performance management sub - system from data collection , data processing , data presentation three aspects , and gives algorithm and algorithm implementation for concrete problems in data processing modules , such as distributed timer , intelligent polling , network fault detection based on icmp stream analysis , network performance tendency analysis . as for data presentation modules , mvc design pattern is used to decouple the data and data ' s presentation , improve the scalability of the system 本文從數(shù)據(jù)采集、數(shù)據(jù)處理與數(shù)據(jù)呈現(xiàn)三方面分析與實(shí)現(xiàn)了性能管理子系統(tǒng),在數(shù)據(jù)處理模塊中針對(duì)網(wǎng)絡(luò)監(jiān)控的一些具體問(wèn)題給出了相應(yīng)算法分析及其實(shí)現(xiàn),如分布式timer算法、智能輪詢算法、據(jù)icmp流向?qū)W(wǎng)絡(luò)故障進(jìn)行分析以及網(wǎng)絡(luò)性能趨勢(shì)分析等;在數(shù)據(jù)呈現(xiàn)模塊中采用mvc設(shè)計(jì)模式,以松禍合的方式實(shí)現(xiàn)了數(shù)據(jù)層與表示層的分離,提高了系統(tǒng)的擴(kuò)展性。