Play Beautiful game Frogatto in ubuntu

Frogatto is a platform game in two dimensions. The protagonist of this game is a funny frog can jump, run, swim, while avoiding being hurt by the various monsters in each level.
It is currently available Frogatto version 1.0, which represents the first stable version of it.  Frogatto 1.0 is a classic platform adventure game is fun and fully playable.

Frogatto has more than 30 levels and a fully functional editor that allows you to create your own levels or, edit an existing levels.

How to Install Latest version Frogatto in Ubuntu

# sudo wget -O /etc/apt/sources.list.d/frogatto.list http://www.frogatto.com/apt/frogatto.list
# wget -O- http://www.frogatto.com/apt/key.gpg | sudo apt-key add - wget -O http://www.frogatto.com/apt/key.gpg | sudo apt-key add -
# sudo apt-get update && sudo apt-get install

Thesis on SHORT RANGE UNDERWATER OPTICAL COMMUNICATION LINKS

The future tactical ocean environment will be increasingly complicated. In addition to traditional communication links there will be a proliferation of unmanned vehicles in space, in the air, on the surface, and underwater. To effectively utilize these systems improvements in underwater communication systems are needed. Since radio waves do not propagate in sea water, and acoustic communication systems are relatively low bandwidth the possibility of high speed underwater optical communication systems are considered.

In traditional communication systems, constructing a link budget is often relatively straight forward. In the case of underwater optical systems the variations in the optical properties of ocean water lead to interesting problems when considering the feasibility and reliability of underwater optical links. The main focus of this thesis is to understand how to construct an underwater link budget which includes the effects of scattering and absorption of realistic ocean water.

The secondary focus of the thesis was to construct LED based optical communication systems. This required understanding the behavior of Gallium Nitride LEDs operated under intense electrical pulsing conditions. An optical FM wireless system was constructed for transmitting speech. An LED based Ethernet compatible digital communications system that was capable of operating at 10 Mbps was also constructed and packaged for underwater operation.

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Holographic Information Systems Thesis

The goal of this work is to investigate the use of holographic techniques for information processing and transmission systems. Until recently information has been processed and transmitted mainly electronically. With the advent of optical fiber communications the monopoly of electronics has receded in the telecommunications field, but the domain of information processing is still dominated by electronic processors.

This thesis follows a top-down approach to the design of processors that integrate both electronic and optical components. It begins with the design considerations of a compact, rapidly reconfigurable opto-electronic processor, which possesses an optical bus in addition to the traditional electronic bus. The optical bus takes advantage of the massive parallelism that is afforded by optics and can be coupled to a holographic digital memory, allowing rapid reconfiguration of the device. The capability of rapid reconfiguration gives rise to a new computational paradigm, where the reprogramming of the device can become part of the computation. We suggest additional applications of this processor, namely as a smart reading head for large scale holographic disk memories. Finally we present novel algorithms that were developed specifically to take advantage of the additional capabilities of our processor. The next section is concerned with the wavelength and angular tuning of strong volume holograms, both in the reflection and 90-degree geometries. Since photons have no charge, we need to rely on their wave properties to manipulate them, both for long-range transmission, such as telecommunications, and short-range transmission, such as on chip interconnects. In this section we investigate how volumeholograms can be used to selectively redirect information bearing light beams.

The final part of this thesis is concerned with material issues. Holographic recording of strong volume gratings is one of the most commonly used approaches, and photorefractive materials have a strong bearing on the overall performance of the final system.

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