Free studying software for linux

Baudline is a real-time signal analysis tool and an offline time-frequency browser. Baudline project has a built-in tone generation capability and it can play back audio files with a multitude of effects and filters.
Designed for environmental analysis missions that range from modulation parameter measurements to searching for transient signals that go bump in the night, baudline combines fast digital signal processing, versatile high-speed displays, and continuous capture tools for hunting down and studying elusive signal characteristics.
Main features:
- 192 kHz real-time bandwidth
- 96 dB dynamic range
- Real or Quadrature input
- Multiple sound card support
- Input Digital Down Converter (tuner)
- Configurable input channels that can perform various operations
- Channel Equalization
- Frequency, time, amplitude, and sample probability distribution analysis
- Drift Integration "de-chirping"
- High speed displays
- Test signal generation
Audio player
- looping
- speed control with multirate resampling
- pitch scaling
- heterodyning (frequency shifting)
- 2D matrix surround panning
- notch, high, and low pass filters
- digital gain boost
File loading
- file formats: .wav, .aiff, .au, .al, .snd, .voc, .rmd, .pvf, .mp3, ID3, .ogg, .gsm, .sah, .fna, raw, .avi, .mov
- channels: mono, stereo, ... up to 9 channels
- data formats: ASCII decimal, A-law, u-law, 1-bit (msb & lsb), 8-bit (signed & unsigned), 16/24/32-bit integer (little & big endian), float, double
- compression
- lossless suffixes: .gz, .bz2, .Z, .zip, .flac
- codecs: ADPCM, GSM, MPEG, Ogg Vorbis
Measurements
- peaks: primary, secondary, delta (Hz dB PSD)
- fundamental: (Hz dB PSD), auto drift rate, chromatic, periodicity, RPM
- distortion: SNR, THD, SINAD, ENOB, SFDR
- power: full, select, noise ratio (dB PSD)
- system: clips, delta selected, frequency range, cursor time, UTC time

Linux Holdings Linux study guide LPI 102.

Linux Holdings is a linux and Open Source training company, training Linux Administration as the core focus.

These are not the only Open Source courses we offer, but the most popular.

Training info

Linux Holdings offer a full spectrum of Linux and open source courses. These start from basic low-level courses to the very advanced administration courses.

All our administration courses are based on the international LPI certification. Our trainers are the best available in South Africa. They are not just excellent Linux administrators with many years experience; they are also the best trainers in the industry. Good administrators are not necessarily good trainers; we give you the best of both sides.

Our entry-level and intermediate courses include the ICDL for OpenOffice.org. We have a full marketing and development department constantly developing and updating courses. Linux Holdings invests huge amounts of time and resources in development, testing and research to give the best training available today.

Our quality department ensures that all students are trained to the highest standard possible. It is also the quality departments duty to ensure that students start with the right course so the learning gradient is not to high or to low. Speak to us so that we can suggest the proper courses for your IT experience.

Quran project is aimed to be a comprehensive tool to navigate through texts of the Quran, play readings of selected verses, as well as other features.
QtQuran project should also cover multiple translations of the Quran.
Arabeyes is a Meta project that is aimed at fully supporting the Arabic language in the Unix/Linux environment. It is designed to be a central location to standardize the Arabization process. Arabeyes relies on voluntary contributions by computer professionals and enthusiasts all over the world.
Unlike other Arabized products, Arabeyes is Open Source, completely FREE and abides by the ideals of the open source communities. Arabeyes aims for all active participants and volunteers to partake in the development process and to speak their mind on this professional effort.
The idea of Arabizing Unix is not a new one. However, most of the attempts were done by Arab computer science students studying outside of the Arab world. Once those individuals graduated, their projects were abandoned. Resulting in very sparse code and in every subsequent attempt in having to re-invent the wheel. Arabeyes aims to eliminate this redundancy and lack of information by not depending on any one person or group - Arabeyes is aimed to succeed irrespective of the interest or availability of the parties involved.
Arabeyes plans to address every aspect of making the use of Arabic on linux/unix common and without headaches/hurdles. Arabeyes goal is not to create new applications (if those applications exist), but to incorporate modifications/additions to existing common everyday-use applications. Arabeyes will initially engage in the following projects,
- Address the various font/keyboard-mapping issues
- Create the ability to write plain-text Arabic easily
- Create the ability to spell-check your Arabic text documents
- Create the ability to send/receive mail through an Arabic interface
- Localize (or translate) Common Graphical-User-Interface (GUI)
- Create the ability to take Arabic text files and create various enriched documents (TeX, word, etc)
The Arabeyes project acknowledges the importance of documentation. It is the only way to ensure that Arabization will proceed forward. Documentation creates a concrete foundation which others can refer to and follow in the future.
Enhancements:
- qtquran requires qt-3.0.5 and libquran (libexpat, libspeex and libogg).

Linda is an widely studied distributed computing environment, centered around the notion of a tuple space. A tuple space is a bag (also called a multi-set) of tuples.

A tuple is an ordered, typed chunk of data. Tuple spaces exist independently of processes in the system, and the data placed into a tuple space also exist independently. See "Generative communication in Linda" (1985) and "Multiple tuple spaces in Linda" both by David Gelernter for more information on Linda.

PyLinda is a simple implementation of a linda system, however it also includes several of the more recently proposed extensions to Linda in the form of multiple tuple spaces, garbage collection, sane non-blocking primitives and bulk tuple operations.

BuddySpace is an instant messenger with four novel twists: (1) it allows optional maps for geographical & office-plan visualizations in addition to standard buddy lists; (2) it is built on open source Jabber, which makes it interoperable with ICQ, MSN, Yahoo and others; (3) it is implemented in Java, so it is cross-platform; (4) it is built by a UK research lab, so it is 100% free with full sources readiily available. But BuddySpace is about more than just messaging, as we explain below.

One of the key factors that led to the widespread popularity of Instant Messaging applications from 1997 onwards (including ICQ, AOL, Yahoo!, MSN, Odigo, and Jabber messengers) was the concept of pushed presence: the automatic notification of the appearance of friends and colleagues online.

However, Instant Messaging (IM) is just one of many possible presence-related and presence-dependent applications. For example, presence-enabled applications can facilitate safety-tracking of children by mobile phone, support for emergency services, blind-date radar, group teleconference management, multiplayer games, and anything involving the collaboration of individuals separated in space and time.

Why phone a contact only to receive an engaged tone or pre-recorded message, when the telephone network already knows what state your contact is in, and could indicate this directly on your contact list? All of these concepts embody varying degrees of what we refer to as enhanced presence management.

The concept of presence has matured in recent years to move away from the simple notion of online/offline/away, towards a rich blend of attributes that can be used to characterise an individuals physical and/or spatial location, work trajectory, time frame of reference, mental mood, goals, and even intentions! Our challenge is how best to characterise presence, how to make it easy to manage and easy to visualise, and how to remain consistent with the users own expectations, work habits, and existing patterns of Instant Messaging and other communication tool usage.

BuddySpace generalizes the concept of Buddy List (popularised by Instant Messaging tools such as AOL Instant Messenger, ICQ, MSN Messenger, and Yahoo Messenger) to provide multiple views of collaborative workgroups according to users needs and tastes. Our aim has been to provide a personal dashboard or radar screen so that one can observe the availability and interaction state of colleagues worldwide in a manner that exhibits the following desirable properties:

* immediate: real-time updates need to be pushed instantly to users rather than pulled in by request -- the push approach helps keep updates more palpable and informative
* peripheral and therefore non-intrusive: users lead busy lives, and dislike being bombarded with yet more information, so we aim to keep awareness of colleagues available in a compact manner that can be noticed peripherally
* customisable: some people prefer simple or hierarchical lists, some prefer visual maps, some prefer status lights, and so on; some prefer a Windows look-and-feel, some a Mac-- we need to cater for diverse user preferences and capabilities
* scaleable: we have to provide ways to indicate the presence of potentially enormous numbers of people, even given that these numbers will be filtered down for personal use -- researchers inhabit workspaces with many hundreds of colleagues around the globe; the Open University has well over 150,000 students online; large peer-spaces like music swapping communities have many millions of users connected simultaneously
* interoperable: with several hundred million users of the Big Four (AIM/ICQ/MSN/Yahoo!), it is crucial that any approach allow interopebility with systems to which our users already subscribe; this is one of the many reasons we built BuddySpace entirely on top of Jabber (www.jabber.org), which provides gateways to the Big Four products.
* cross-platform: we need to service a community not only on Windows, Unix/Linux, and Mac desktop and notebook configurations, but also on PDAs and mobile phones -- we therefore develop entirely in Java
* XML-literate: for future intelligent applications, communication transport needs to be about more than just string-transmission; another we adopted Jabber is that it is based entirely on a generic XML transport architecture, ideally suited for this purpose.
* open source: for the research community to join us and to gain leverage via our research output, we have ensured that BuddySpace is open source, available on SourceForge.
* clean: BuddySpace adheres rigorously to the Jabber specification, which means that it interoperates with other Jabber clients and servers without danger of the rogue behaviour that non-standard implementations inadvertently allow (e.g. the semantics of users inhabiting multiple groups is undefined in some clients, and can cause crashes).
* extendable: BuddySpace deploys a plug-in architecture which means that additions, such as new visualizations, and new concepts such as gaming interfaces, are readily achievable

BuddySpace fulfills all the above criteria, and provides a compelling user interface that can be highly compact, yet provide users with an important feel-good factor, akin to seeing nearby office lights turned on when entering ones office building at night. By studying the semantics of presence, we can also augment the existing impoverished presence states in a principles manner, providing capabilities that are more representative of the way real users work. Forthcoming capabilities will include automatic location updates via mobile devices, and the use of semantic matchmaking via intelligent profile handling, in order to help users quickly find and filter colleagues of particular interest.

PyGo project is a Python/Tk application for studying and playing the ancient game of Go.
This is the first public release of PyGo, a Python/Tk application and library for playing and studying the ancient game of go.
There are lots more features planned but this release is suitable for studying games in SGF format as well as playing local human versus human games in the absence of a board.
Enhancements:
- Initial public release

Advene (Annotate Digital Video, Exchange on the NEt) is an ongoing project in the LIRIS laboratory (UMR 5205 CNRS) at University Claude Bernard Lyon 1. The project aims at providing a model and a format to share annotations about digital video documents (movies, courses, conferences...), as well as tools to edit and visualize the hypervideos generated from both the annotations and the audiovisual documents.
Teachers, moviegoers, etc. can use them to exchange multimedia comments and analyses about video documents. The project also aims at studying the way that communities of users (teachers, moviegoers, students...) will use these self-publishing tools to share their audiovisual "readings", and to envision new editing and viewing interfaces for interactive comment and analysis of audiovisual content/
Main features:
- At the package creation level : annotation of audiovisual documents (association of typed information to temporal fragments), creation of visualisation means (views).
- Exchange of annotations and visualization modes in packages independently from the audiovisual material (images and sounds). If needed for the visualization of the data, pictures and sound clips can be extracted from the digital video support (e.g. file, DVD). The user of the data is then required to possess the video to take full advantage of the analysis and comments.
- At the package use level : visualisation of augmented movie (the annotations are used to display supplementary information on the video, to control the playing of the video, to navigate the video), visualisation of hypertext documents constructed from annotation and AV material, use of ad-hoc views (e.g. timeline view).
Enhancements:
- This release features a new customizable GUI layout, quick search functionality, usability enhancements in the timeline view, and a number of improvements and bugfixes.