Event driven Programming

An important aspect of system support for mobile computing involves alleviating the issues related to programming the underlying distributed system. Our approach to dealing with these issues is by means of programming language support. To this end, we have designed a high-level, distributed object-oriented programming language-called AmbientTalk-which has been designed specifically for mobile networks. We motivate the need for such dedicated language support based on the fundamental characteristics of mobile distributed systems. Subsequently, we describe the salient features of AmbientTalk with respect to distributed programming by means of an exemplar mobile computing application.

Implementing multi-touch and multi-modal systems requires splitting the code across several event handlers, which complicates programmers work.
The present paper finds the root of this problem in the event-driven paradigm; more concretely, in the fact that event-driven languages lack abstractions for representing event sequences. It then suggests to augment event-driven languages so that programmers can have the possibility to define event sequences --herein called composite events-- that can then be bound to event handlers. The main features of the composite event-driven language developed by the authors are outlined, as well as its benefits and problems.
The paper suggests that, since its design, the event-driven paradigm was tailored for mouse-based interactions, and it may be important to question its suitability for implementing multi-touch and multi-modal interactions.

Node.js is a software platform for scalable server-side and networking applications. Node.js applications are written in JavaScript, and can be run within the Node.js run-time on Mac OS X, Windows and Linux with no changes. Node.js applications are designed to maximize throughput and efficiency, using non-blocking I/O and asynchronous events. Node.js applications run single-threaded, although Node.js uses multiple threads for file and network events. Node.js is commonly used for real time applications due to its asynchronous nature. Node.js internally uses the Google V8 JavaScript engine to execute code, and a large percentage of the basic modules are written in JavaScript. Node.js contains a built-in asynchronous i/o library for file, socket and HTTP communication. The HTTP and socket support allows Node.js to act as a web server without additional web server software such as Apache.

In this paper, we propose software architecture of behavioural-based robot control system using Active Object Computing Model. Active Object Computing Model is a programming technique that combines the three components, Event Driven Programming paradigm, Event Driven Software Architecture and UML State chart formalism. The scope of this project includes the activities of designing and implementing behavior-based navigation system software, designing and building autonomous mobile robot for software implementation, testing, observing and analyzing the behaviour of autonomous mobile robot which is controlled by behaviour-based navigation system software. The software has been tested on an autonomous mobile robot and run on ARM Cortex M3 processor using mbed NXP LPC1768 microcontroller and successfully demonstrated the behaviour of obstacle avoidance and object Following. Software Architecture is built using Quantum Platform™ from Quantum Leaps.

The fundamental turn of software into concurrency and distribution is not only a matter of performance, but also of design and abstraction. It calls for programming paradigms that, compared to current mainstream paradigms, would allow us to more naturally think about, design, develop, execute, debug, and profile systems exhibiting different degrees of concurrency, autonomy, decentralization of control, and physical distribution. The AGERE! workshop is aimed at focusing on and developing the research ...

ABSTRACT In the twenty-first century, computers have become indispensable in music making, distribution, performance, and consumption. Making Music with Computers: Creative Programming in Python introduces important concepts and skills necessary to generate music with computers. It interweaves computing pedagogy with musical concepts and creative activities, showing students how to integrate the creativity and design of the arts with the mathematical rigor and formality of computer science. The book provides an introduction to creative software development in the Python programming language. It uses innovative music-creation activities to illustrate introductory computer programming concepts, including data types, algorithms, operators, iteration, lists, functions, and classes. The authors also cover GUIs, event-driven programming, big data, MIDI programming, client–server programming, recursion, fractals, and complex system dynamics.