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[Other] dbms11 DL : 0: 阅读材料：关系数据库之父 ──埃德加·考特在数据库技术发展的历史上，1970年是发生伟大转折的一年。这一年的6月，IBM圣约瑟(SAN JOSE)研究室的-reading material : the father of the relational database Edgar Building Building an examination of the development of database technology in its history, happened in 1970 is the great turning point in the year. This year in June, IBM San Jose (SAN JOSE) Laboratory
Date : 2025-12-27 Size : 139kb User : 李闻廷
[Other] illation DL : 0: 前言自古以来收藏家的主要精力一直花费在“正统文学”身上，在1970年代以前，鲜有人把注意力放在推理小说这个未开发的领域上，即使有那么少数的一撮人，也抱着小心翼翼的态度作探索状。然而，过去二十五年来，推理书籍一直是收藏家的宝贝宠儿。造成如今突飞猛进的状况有好几个因素，在1980到1990年代之间，创作出第二个黄金时期的新一代才华洋溢的推理作家们尤为功不可抹。-foreword collectors since ancient times has been the main energy spent on "authentic literature" on the other Before the 1970s, few were focusing on the detective story of this untapped area. Even if there are so few of the handful of people, also takes a cautious approach to exploration for-like. However, over the past 25 years, books have been reasoning is the beloved pet collectors. Now advances caused the situation a number of factors, the 1980-1990 era between create a second golden era of the creation of a new generation of talented writers reasoning is particularly great deal.
Date : 2025-12-27 Size : 574kb User :
[Other] c_study DL : 0: C 语言是1972年由美国的Dennis Ritchie设计发明的, 并首次在UNIX操作系统的 DEC PDP-11 计算机上使用。它由早期的编程语言 BCPL( Basic Combind Programming Language) 发展演变而来。在1970年, AT&T 贝尔实验室的 Ken Thompson根据BCPL语言设计出较先进的并取名为 B的语言, 最后导了C 语言的问世。随着微型计算机的日益普及, 出现了许多C 语言版本。由于没有统一的标准, 使得这些C 语言之间出现了一些不一致的地方。为了改变这种情况, 美国国家标准研究所(ANSI)为C 语言制定了一套ANSI标准, 成为现行的C语言标准。 -C language is the United States in 1972 by Dennis Ritchie in the design of the invention, for the first time in the UNIX operating system DEC PDP-11 computer. It consists of an early programming language BCPL (Basic Combind Programming Language) development evolved. In 1970, AT
Date : 2025-12-27 Size : 465kb User : 宋
[Other] Recent_Advances_in_Face_Recognition DL : 0: 人脸识别进展人脸识别最新的进展-2009-Face recognition is still a vividly researched area in computer science. First attempts were made in early 1970-ies, but a real boom happened around 1988, parallel with a large increase in computational power. The first widely accepted algorithm of that time was the PCA or eigenfaces method, which even today is used not only as a benchmark method to compare new methods to, but as a base for many methods derived from the original idea.
Date : 2025-12-27 Size : 16.53mb User : HK
[Other] The_C_Programming_Language DL : 0: 很经典的一本书。值得一看。C编程指南书。 -C is a general-purpose programming language. It has been closely associated with the UNIX operating system where it was developed, since both the system and most of the programs that run on it are written in C. The language, however, is not tied to any one operating system or machine and although it has been called a ``system programming language because it is useful for writing compilers and operating systems, it has been used equally well to write major programs in many different domains. Many of the important ideas of C stem from the language BCPL, developed by Martin Richards. The influence of BCPL on C proceeded indirectly through the language B, which was written by Ken Thompson in 1970 for the first UNIX system on the DEC PDP-7. BCPL and B are ``typeless languages. By contrast, C provides a variety of data types. The fundamental types are characters, and integers and floating point numbers of several sizes. In addition, there is a hierarchy of derived data types creat
Date : 2025-12-27 Size : 241kb User : FSQ
[Other] HPW DL : 0: HVDC technology first made its mark in the early under-sea cable intercon- nections of Gotland (1954) and Sardinia (1967), and then in long distance transmission with the Pacific Intertie (1970) and Nelson River (1973) schemes using mercury-arc valves. A significant milestone occurred in 1972 with the first Back to Back (BB) asynchronous interconnection at Eel River between Quebec and New Brunswick this installation also marked the introduction of thyristor valves to the technology and replaced the ear- lier mercury-arc valves-HVDC technology first made its mark in the early under-sea cable intercon- nections of Gotland (1954) and Sardinia (1967), and then in long distance transmission with the Pacific Intertie (1970) and Nelson River (1973) schemes using mercury-arc valves. A significant milestone occurred in 1972 with the first Back to Back (BB) asynchronous interconnection at Eel River between Quebec and New Brunswick this installation also marked the introduction of thyristor valves to the technology and replaced the ear- lier mercury-arc valves
Date : 2025-12-27 Size : 88kb User : jittu