OpenGL中的各種轉換是通過矩陣運算實現的，具體的說，就是當發出一個轉換命令時，該命令會生成一個4X4階的轉換矩陣（OpenGL中的物體坐標一律采用齊次坐標，即(x, y, z, w)，故所有變換矩陣都采用4X4矩陣），當前矩陣與這個轉換矩陣相乘，從而生成新的當前矩陣。例如，對于頂點坐標v ，轉換命令通常在頂點坐標命令之前發出，若當前矩陣為C，轉換命令構成的矩陣為M，則發出轉換命令后，生成的新的當前矩陣為CM，這個矩陣再乘以頂點坐標v，從而構成新的頂點坐標CMv。上述過程說明，程序中繪制頂點前的最后一個變換命令最先作用于頂點之上。這同時也說明，OpenGL編程中，實際的變換順序與指定的順序是相反的。文檔對其進行了詳細的分析。
K9F1208U0M 的ALE、CLE分別由DSP 的A1 和A0 控制。DSP的低8位數據線直接與閃存的I/O0-I/O7 相連，實現命令、地址和數據的傳輸； DSP的通用I/O口IOA2 接R/B，監測存儲器的工作狀態，當R/ B 處于低電平時,表示有編程、擦除或隨機讀操作正在進行；操作完成后, R/ B 會自動返回高電平。DSP的W E 、R D 分別接FLASH的W E 、R E ， 控制讀、寫操作。CS2接閃存的片選線CE。
The task of clustering Web sessions is to group Web sessions based on similarity and consists of maximizing the intra-
group similarity while minimizing the inter-group similarity．
The first and foremost question needed to be considered in clustering
W b sessions is how to measure the similarity between Web
sessions．However．there are many shortcomings in traditiona1
measurements．This paper introduces a new method for measuring
similarities between Web pages that takes into account not only the
URL but also the viewing time of the visited web page．Yhen we
give a new method to measure the similarity of Web sessions using
sequence alignment and the similarity of W eb page access in detail
Experiments have proved that our method is valid and e幣cient．
Java MP3 Player,
Here s a list of features:
- Reads, creates, updates, and removes id3v2.3 and id3v2.4 tags
- Reads, creates, updates, and removes id3v1 tags
- Extracts MPEG data such as bit rate, sample rate, channel mode, etc.
- Calculates playing time of mp3 from mpeg information (no good w/VBR)
- Can read and create Winamp styled playlists
- Offers other utility classes such as MP3FileFilter and MP3Comparator
- NullsoftID3GenreTable object keeps a list of genres for you and can
automatically determine the id3v1 genre from an id3v2 string or the
other way around
This a sample Plug and Play filter driver that provides WMI data blocks. Typically, driver writers will copy the sample code into their own driver and make any minor modifications so that the WMI data blocks are always available when the driver is loaded. Alternatively, WmiSamp can be left as a filter driver if WMI data blocks should only be made available when the filter driver is loaded.
