In case you haven t realized it, building computer systems is hard. As the complexity of the system gets greater, the task of building the software gets exponentially harder. As in any profession, we can progress only by learning, both from our mistakes and from our successes. This book represents some of this learning written in a form that I hope will help you to learn these lessons quicker than I did, or to communicate to others more effectively than I did before I boiled these patterns down.
In today’s IT environment, Java is a leading technology in the world of enterprise
development. As management demands more from technology, complexity
in infrastructure seems to grow exponentially, leaving many unable to
keep up with the demands of such a fast-paced world. These complexities
can be seen in the over-evolving Java 2 Enterprise Edition (J2EE) specifications.
This unnecessary complexity drove us to discover ways of simplifying
development.
Libsvm is a simple, easy-to-use, and efficient software for SVM
classification and regression. It can solve C-SVM classification,
nu-SVM classification, one-class-SVM, epsilon-SVM regression, and
nu-SVM regression. It also provides an automatic model selection
tool for C-SVM classification. This document explains the use of
libsvm.
PrintNow is a 32-bit application that runs only under Windows 95
or Windows NT 4.0. It allows your PrtScr and Alt+PrtScr keys to
print a screen capture directly to your printer instead of just
copying the image to the Windows clipboard. PrintNow can also
print any DIB image in the clipboard, regardless of its
original source. PrintNow supports multiple instances, it can
print multiple copies of a screen capture to the same printer
with different print settings, to several different printers,
or any combination thereof, with a single keystroke.
Kismet is an 802.11b network sniffer and network dissector. It is capable of sniffing using most wireless cards, automatic network IP block detection via UDP, ARP, and DHCP packets, Cisco equipment lists via Cisco Discovery Protocol, weak cryptographic packet logging, and Ethereal and tcpdump compatible packet dump files. It also includes the ability to plot detected networks and estimated network ranges on downloaded maps or user supplied image files.
Kismet是一個針對IEEE802.11b無線局域網(wǎng)的嗅探和包分析器，支持大多數(shù)無線網(wǎng)卡，支持自動檢測UDP、ARP和DHCP的數(shù)據(jù)包，支持通過CDP協(xié)議檢測思科網(wǎng)絡(luò)設(shè)備，支持加密數(shù)據(jù)包記錄，采用與Ethereal和Tcpdump兼容的的數(shù)據(jù)包記錄文件，支持通過用戶提供地圖來檢測和評估無線網(wǎng)絡(luò)范圍。
