Monday, 3 March 2014

1000 Astronomy/Astrophysics Ebook Collection!


    Ebook Collection

    Download : 1000 Astronomy/Astrophysics Ebook Collection

Friday, 14 February 2014

Pioneers of Science - Oliver Lodge


        Ebook Size : 32.4 MB

       Download : Pioneers of Science

Compiled for the general reader and first published in 1893, this illustrated collection of lectures is a whistle-stop history of astronomical discoveries from the ancient world to the modern era. It includes concise explanations of theory in non-technical terms, biographical notes on significant astronomers, and more than a hundred illustrations. This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

Wednesday, 5 February 2014

Think Python - How to Think Like a Computer Scientist - Allen B. Downey


                Ebook Size : 848 KB

              Download : Think Python by Allen B. Downey
              
The goal of this book is to teach you to think like a computer scientist. This way of thinking combines some of the best features of mathematics, engineering, and natural science. Like mathematicians, computer scientists use formal languages to denote ideas (specifically computations). Like engineers, they design things, assembling components into systems and evaluating tradeoffs among alternatives. Like scientists, they observe the behavior of complex systems, form hypotheses, and test predictions.

The single most important skill for a computer scientist is problem solving. Problem solving means the ability to formulate problems, think creatively about solutions, and express a solution clearly and accurately. As it turns out, the process of learning to program is an excellent opportunity to practice problem solving skills. That’s why this chapter is called, “The way of the program.” On one level, you will be learning to program, a useful skill by itself. On another level, you will use programming as a means to an end. As we go along, that end will become clearer.

Python is an example of a high-level language; other high-level languages you might have heard of are C, C++, Perl, and Java. There are also low-level languages, sometimes referred to as “machine languages” or “assembly languages.” Loosely speaking, computers can only run programs written in low level languages. So programs written in a high-level language have to be processed before they can run. This extra processing takes some time, which is a small disadvantage of high-level languages.

The advantages are enormous. First, it is much easier to program in a high-level language. Programs written in a high-level language take less time to write, they are shorter and easier to read, and they are more likely to be correct. Second, high-level languages are portable, meaning that they can run on different kinds of computers with few or no modifications. Low-level programs can run on only one kind of computer and have to be rewritten to run on another.

Sunday, 5 January 2014

Mozilla Firefox OS Features Guide


   Ebook Size : 7.6 MB

  Download : Mozilla Firefox OS Features Guide.pdf

Firefox OS is built entirely using HTML5 and open Web technologies, it is free from the 
rules and restrictions of existing proprietary platforms, allowing developers, handset 
manufacturers and operators to innovate without boundaries, to provide people with the best
smartphone experience possible.

andbook! - Android Programming

       
       Ebook Size : 1.7 MB

      Download : andbook - Android Programming.pdf

The Open Handset Alliance released the Google Android SDK on November 12 th , 2007, having announced it about a week before. The impact was unbelievable, almost every IT/programming-related news page dumped a news-post about the SDK release – the Google Groups (2) was overwhelmed with over 2000 Messages within the first two Days. The idea of the Android Platform was and still is amazing and is of course attracting more and more programmers every day. Especially the open architecture based on Intents and the possibility to replace even the Home-application grant a really large amount of flexibility to the whole platform.
       
“Android – Imagination is the limit”

“Android was built from the ground-up to enable developers to create compelling mobile applications that take full advantage of all a handset has to offer. It is built to be truly open. For example, an application could call upon any of the phone's core functionality such as making calls, sending text messages, or using the camera, allowing developers to create richer and more cohesive experiences for users.”

“Android is built on the open Linux Kernel. Furthermore, it utilizes a custom virtual machine that has been designed to optimize memory and hardware resources in a mobile environment. Android will be open source; it can be liberally extended to incorporate new cutting edge technologies as they emerge. The platform will continue to evolve as the developer community works together to build innovative mobile applications.”

Here Google is talking of the so called Dalvik virtual machine (DalvikVM), which is a register based virtual machine, designed and written by Dan Bornstein and some other Google engineers, to be an important part of the Android platform. In the words “register based” we find the first difference to normal Java virtual machines (JVM) which are stack based.