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The Linux Enterprise Cluster explains how to take a number of inexpensive computers with limited resources, place them on a normal computer network, and install free software so that the computers act together like one powerful server. This makes it possible to build a very inexpensive and reliable business system for a small business or a large corporation. The book includes information on how to build a high-availability server pair using the Heartbeat package, how to use the Linux Virtual Server load balancing software, how to configure a reliable printing system in a Linux cluster environment, and how to build a job scheduling system in Linux with no single point of failure.
The book also includes information on high availability techniques that can be used with or without a cluster, making it helpful for System Administrators even if they are not building a cluster. Anyone interested in deploying Linux in an environment where low cost computer reliability is important will find this book useful.
標(biāo)簽：
inexpensive
Enterprise
computers
explains
上傳時間：
2014-11-29
上傳用戶：zhangliming420
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FIST可堆疊文件系統(tǒng)，linux文件系統(tǒng)修改相關(guān)的開源軟件，使得對linux文件系統(tǒng)功能的改進(jìn)很簡單了
The FiST (File System Translator) system combines two methods to solve the above problems in a novel way: a set of stackable file system templates for each operating system, and a high-level language that can describe stackable file systems in a cross-platform portable fashion. Using FiST, stackable file systems need only be described once. FiST s code generation tool, fistgen, compiles a single file system description into loadable kernel modules for several operating systems (currently Solaris, Linux, and FreeBSD). The project demonstrates that with FiST, code size and development time are reduced significantly, while imposing a small performance overhead of only 1-2％. These benefits are achieved, as well as portability, without changing existing operating systems or file system.
標(biāo)簽：
FIST
堆疊
文件系統(tǒng)
上傳時間：
2014-01-10
上傳用戶：xsnjzljj
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Developing internationalized products is a continuous balancing act. Developers and their managers often grossly underestimate the level of effort and attention to detail required to create either a world-ready, single-binary application ready for use in many different markets, or high-quality, foreign-language editions of a product. If you are a developer, make sure your management understands what is involved.
標(biāo)簽：
internationalized
Developing
Developers
continuous
上傳時間：
2014-12-05
上傳用戶：TRIFCT
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A new cable fault location method based on
wavelet reconstruction is proposed. In this method the
difference between the currents of faulty phase and sound
phase under the high voltage pulse excitation is used as the
measured signal and is decomposed in multi-scale by wavelet
transform, then reconstructed in single scale. Comparing with
traditional fault location method by travelling wave, the
presented method will not be interfered by the reflected wave
from the branch joint of cables or from other positions where
the impedances are not matched and not be influenced by fault
types, otherwise, the reflected waves can be recognized even
the faulty position is near to the measuring terminal, at the
same time, the influence of the wave speed uncertainty can be
reduced. The correctness of the proposed method is proved by
simulation results.
標(biāo)簽：
method
reconstruction
location
proposed
上傳時間：
2016-02-04
上傳用戶：maizezhen
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Easy-to-Use, Ultra-Tiny, Differential, 16-Bit Delta Sigma ADC With I2C Interface
The LTC2453 is an ultra-tiny, fully differential, 16-bit, analog-to-digital converter. The LTC2453 uses a single 2.7V to 5.5V supply and communicates through an I2C interface. The ADC is available in an 8-pin, 3mm x 2mm DFN package. It includes an integrated oscillator that does not require any external components. It uses a delta-sigma modulator as a converter core and has no latency for multiplexed applications. The LTC2453 includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude lower than conventional delta-sigma converters. Additionally, due to its architecture, there is negligible current leakage between the input pins.
標(biāo)簽：
Differential
Easy-to-Use
Ultra-Tiny
Interface
上傳時間：
2014-01-08
上傳用戶：鳳臨西北
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How the K-mean Cluster work
Step 1. Begin with a decision the value of k = number of clusters
Step 2. Put any initial partition that classifies the data into k clusters. You may assign the training samples randomly, or systematically as the following:
Take the first k training sample as single-element clusters
Assign each of the remaining (N-k) training sample to the cluster with the nearest centroid. After each assignment, recomputed the centroid of the gaining cluster.
Step 3 . Take each sample in sequence and compute its distance from the centroid of each of the clusters. If a sample is not currently in the cluster with the closest centroid, switch this sample to that cluster and update the centroid of the cluster gaining the new sample and the cluster losing the sample.
Step 4 . Repeat step 3 until convergence is achieved, that is until a pass through the training sample causes no new assignments.
標(biāo)簽：
the
decision
clusters
Cluster
上傳時間：
2013-12-21
上傳用戶：gxmm
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The algorm of viterbi. You talk to your friend three days in a row and discover that on the first day he went for a walk, on the second day he went shopping, and on the third day he cleaned his apartment. You have two questions: What is the overall probability of this sequence of observations? And what is the most likely sequence of rainy/sunny days that would explain these observations? The first question is answered by the forward algorithm the second question is answered by the Viterbi algorithm. These two algorithms are structurally so similar (in fact, they are both instances of the same abstract algorithm) that they can be implemented in a single function:
標(biāo)簽：
discover
viterbi
algorm
friend
上傳時間：
2016-02-16
上傳用戶：xc216
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DBDesigner 4 is a database design system that integrates database design, modelling, creation and maintenance into a single, seamless environment
標(biāo)簽：
database
design
DBDesigner
integrates
上傳時間：
2014-01-05
上傳用戶：csgcd001
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基于OFDM的無線寬帶系統(tǒng)仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
標(biāo)簽：
simulator
i.e.
system-level
link-level
上傳時間：
2016-03-15
上傳用戶：xsnjzljj
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PHILIPS 7130 TV/FM capture card use PHILIPS 7130 chip , is a newly built-in TV card integrating FM radio and TV receiver. You can watch/record TV programs (up to 136 channels) and FM radio on PC. The powerful attached software enables you to & rename favorite channels as per your taste. Moreover, the remote controller makes watching TV through PC more convenient. Through PHILIPS 7130 TV/FM capture card, you can transfer & save the full screen/full motion video captured VCR, camcorder, PC camera or other video sources into hard disk, or you can burn the video to VCD/SVCD/DVD via professional rewrite software. PHILIPS 7130 TV/FM capture card supports snapshot, you can record wonderful clips to create your personal e-album, then share your works with your friends & family via Internet.
標(biāo)簽：
PHILIPS
7130
card
integrating
上傳時間：
2013-12-26
上傳用戶：han_zh
