Free very interesting software for linux

Very Strange Tunneling Tool (VSST) is a multi-protocol tunneling tool. It accepts input by TCP stream sockets and FIFOs, and can send data via TCP, POP3, and ICMP tunneling.

HOW TO COMPILE

Run the following command:

OS | COMMAND
-----------------------
linux+bsd | make
solaris | make solaris[2]
other unix| try both :-)[1]

[1]: Give me root access to your box and I will port it. Im interested in porting vstt to Solaris x86, Solaris sparc, SGI IRIX, AIX, ...

[2]: Never tested since the hardware of my Solaris box is broken.

HOW TO INSTALL

Run make install

Very Simple Control Protocol Daemon is a daemon for home automation tasks.
VSCP protocol is a very simple and free protocol for SOHO automation tasks & friends. The protocol is so easy that everyone can grasp the idea behind it in a few minutes.
Therefore its also very easy to construct and use VSCP aware modules and components. Nodes just start up and then serve the control solution reliable and stable for ever and ever and ever.
The protocol is free and is not designed to conquer the world and every Small Office and HOme. Very Simple Control Protocol Daemon is constructed just because its fun to make tiny little things work together.
Enhancements:
- The port was changed from 1681 to the IANA registered 9598. Scripts for Digitemp support and the first version of the ODIN database were added.

Very Simple Network Monitor is a complete rewrite of project PHP Monitoring.
Its by default capable of monitoring via ping, UDP and TCP checks. Has builtin plugin system so customized scripts can be used to monitor whatever you like eg. oracle tablespaces, diskspace whatever; Alarms are also generated via plugins, it has standard EMAIL alarm, but can be customized to have snmp traps, or sms gateways or whatever.
Can store uptime reports in mysql and generated reports and uptimes in % availability per service.
Has one centralised html monitoring page with all alarms together for good overview.
Enhancements:
- reporting bug fixed
- alarm causes nmonitor to be locked bug fixed
- some other minor stuff I cant remember
- removed some typos from INSTALL doc:)

GNU Archimedes is the GNU package for the design and simulation of submicron semiconductor devices. Archimedes is a 2D Fast Monte Carlo simulator which can take into account all the relevant quantum effects, thank to the implementation of the Bohm effective potential method.

The physics and geometry of a general device is introduced by typing a simple script, which makes, in this sense, GNU Archimedes a powerfull tool for the simulation of quite general semiconductor devices.

In the present release, GNU Archimedes is able to simulate electrons and heavy holes in Silicon and GaAs (Gamma and L-valleys) devices (holes are simulated by means of a simplified MEP model), and in the next release, which is in preparation, it will be able to make simulations in 1D, 2D and 3D (this release will be delivered as soon as possible).

The Scientifical and Industrial Motivations
In today semiconductor technology, the miniaturization of devices is more and more progressing. In this context, it is easy to see that numerical simulations play an important role at every level of device manufacture. In fact, the cost of designing and physically constructing prototypes for VLSI semiconductor devices is very high and without the availability of advanced simulators the efforts for devices miniaturization would, likely, be brought to a halt. From assessing the performance of individual transistors, to circuits and systems, and, consequently, with the promise of improved device performance, industries are encouraged to keep on miniaturizing with lower manufacture costs.

But, unfortunately, such simulations are not whithout their challenges... A first consequence of device miniaturization is that simulations of submicron semicondutor devices requires advanced transport models. Because of the presence of very high and rapidly varying electric field, phenomena occur which cannot be described by means of the well-known drift-diffusion models, which do not incorporate energy as a dynamical variable.

That is why some generalization has been sought in order to obtain more physically accurate models, like energy-transport and hydrodynamical models. The energy-transport models which are implemented in commercial simulators are based on phenomenological constitutive equations for the particle flux and energy flux depending on a set of parameters which are fitted to homogeneous bulk material Monte Carlo simulations. So, this is not, certainly, a satisfactory physical description of the internal electronic dynamics in a semiconductor device.

As current device technologies quickly approach the scales whereby quantum effects due to strong confinement of carriers and direct source-drain tunneling will begin to dominate, new simulation techniques are required in order to fully understand and acurately simulate the physics behind the technology operation.

Of all the simulation methods currently employed, ensemble Monte Carlo has always been, both in the accademic and industrial community, the most vigorous and trusted method for device simulation, as it is proven to be reliable and predictive, as one can easily see from the vast bibliography on this subject.

However, as Monte Carlo relies on the particle nature of the electron (in fact we consider an electron like a biliard ball), quantum effects associated with the wave-like nature of electrons cannot fully incorporated into the actual simulators, i.e. the ensemble Monte Carlo have to be lightly (or strongly, it depends on the point of view and on the methods implemented...) modified to take into account the quantum effects, at least at a first order of approximation, which is certainly enough to take into account correctly all the relevant quantum effects present in the present-day semiconductor devices (till 2015 probably...). In order to take into account the wave-like nature of electrons we use a recently introduced quantum theory, the so-called Bohm effective potential theory.

So it is challenging and very interesting to develop such a code for 2D quantum submicron semiconductor devices. This is why I have decided to implement this code, but these are not the only motivations...

The Ethical Motivations
The very sad situation you quickly observe working in a semiconductor industry, but also in all places in which researches about semiconductor devices are made, the only codes for simulation you can find are not free and are proprietary codes.

That is a very bad situation because, at the present time, if you need to develop your own code for the purpose of simulating a device it is IMPOSSIBLE to obtain an advanced one in a short time, and, trust me, this is EXTREMELY BAD for scientific research... (Immagine if you had to re-discover the Newtonian laws every time you need them...) So, you can find a huge amount of papers describing a lot of numerical methods for simulating, in a very advanced way, semiconductor devices (even in the quantum case), but nobody will give you a code on which you can construct your own method (with the unlikely exception that at least one of the programmers is a friend of yours :) ).

Even worst, if you are a semiconductor device designer and you want to simulate "realistically" a new device, you have to pay (trust me, at very high costs!) a BINARY (just a binary and not the code!) from some well-known software industry. This binary will certainly have some bugs (because it is coded by humans which are not perfect...) and you will never have the possibility of fix them on your own. Of course, you can write to the software house and tell them that there is a bug, but, how many time do you will wait for a new release without those bugs? I dont think it will be a short time...

My impression is that, after a long research on the Web for a Free Software dealing with advanced 2D semiconductor device simulation, there was not a free code for the purpose of semiconductor devices simulation (i mean under GPL license). To be sure about it, I asked to the great Richard Stallman (by mail) if it will be worth to do a code like this and he encouraged me to code it, because there wasnt a code like this as free. So I decided to write this code..

Feed Me Links is a Web application for managing and sharing links.

Feed Me Links provides many interesting features such as tagging, comments, RSS feeds, tag clouds, friend lists, a REST API for exporting, a browser sidebar, and Firefox and IE favorites import.

M3U-Playlist Manager is an administration of loose m3u-playlists in tree structure. Simple mouse-click to add or remove a song from playlist with currently running Song in the Player.

And other interesting functions. Supporting only XMMS at the moment.

libsexier is a sexy cairo widget library for gtk/gnome.

Currently only one widget is in this new library, fittsmenu, find out more at http://www.qdh.org.uk

You can build it like so:

./configure
make

Once built you can cd examples and run ./fittsmenu to try it out.There have been many interesting comments regarding this new menu, and some misconceptions about the way it works. As a result there are some interesting new features I want to add to the fittsmenu widget, however some of these features are very difficult (slice scaling for instance) to put together so please be patient.

If you’d like to know more or get involved please email me about it. As this is in the very very early stages of development I’m very curious to hear peoples opinions and rants about what I’m doing.