72,369 research outputs found
A UI-driven approach to facilitating effective development of rich and composite web applications
It is well-recognized that the development of user interfaces is one of the most time-consuming tasks in the overall application development process. At the same time, there is an increasing demand for rich and fluid user interfaces from web users. As a result, developers are facing increasing challenges in delivering web applications, especially those with rich UI requirements.
In this thesis we present two solutions to facilitate the execution and rapid development of web applications with rich user interfaces. The first solution is a rich internet application (RIA) framework aimed at providing high usability and productivity to web applications, while the second solution is a UI integration framework that simplifies web application development by facilitating the composition of reusable UI components.
The foundation of our RIA framework is an XML-based high-level protocol for communicating asynchronous events and incremental UI updates on the web. The protocol facilitates rich and highly interactive UI, while at the same time eliminates frequent and slow page refreshes and provides a more responsive user experience.
Built on top of the protocol, a server-side runtime allows UI logic code to be executed on the server side, while a set of server-side event-driven API enables developers to implement sophisticated application-specific UI behavior. On the client side, a thin client renders UI and processes native events, but leaves application-specific logic to the server side. The thin client thus allows end users to enjoy a rich UI experience in a safe client environment, without executing any downloaded code.
The proposed UI integration framework includes an abstract UI component model which allows UI components to be programmatically manipulated via events, operations, and properties, essentially exposing UI as services. To facilitate component interactions, the framework offers an event-based composition model, which allows integration logic to be specified in the form of event listeners.
Composite applications are executed via a lightweight runtime middleware, which provides component adapters that allow the middleware to communicate with native UI components implemented in a variety of languages and platforms. Finally, a graphical development environment allows composite applications to be built in a drag-and-drop fashion
Knowledge-based Expressive Technologies within Cloud Computing Environments
Presented paper describes the development of comprehensive approach for
knowledge processing within e-Sceince tasks. Considering the task solving
within a simulation-driven approach a set of knowledge-based procedures for
task definition and composite application processing can be identified. This
procedures could be supported by the use of domain-specific knowledge being
formalized and used for automation purpose. Within this work the developed
conceptual and technological knowledge-based toolbox for complex
multidisciplinary task solv-ing support is proposed. Using CLAVIRE cloud
computing environment as a core platform a set of interconnected expressive
technologies were developed.Comment: Proceedings of the 8th International Conference on Intelligent
Systems and Knowledge Engineering (ISKE2013). 201
Using formal models to design user interfaces a case study
The use of formal models for user interface design can provide a number of benefits. It can help to ensure consistency across designs for multiple platforms, prove properties such as reachability and completeness and, perhaps most importantly, can help incorporate the user interface design process into a larger, formally-based, software development process. Often, descriptions of such models and examples are presented in isolation from real-world practice in order to focus on particular benefits, small focused examples or the general methodology. This paper presents a case study of developing the user interface to a new software application using a particular pair of formal models, presentation models and presentation interaction models. The aim of this study was to practically apply the use of formal models to the design process of a UI for a new software application. We wanted to determine how easy it would be to integrate such models into our usual development process and to find out what the benefits, and difficulties, of using such models were. We will show how we used the formal models within a user-centred design process, discuss what effect they had on this process and explain what benefits we perceived from their use
Early aspects: aspect-oriented requirements engineering and architecture design
This paper reports on the third Early Aspects: Aspect-Oriented Requirements Engineering and Architecture Design Workshop, which has been held in Lancaster, UK, on March 21, 2004. The workshop included a presentation session and working sessions in which the particular topics on early aspects were discussed. The primary goal of the workshop was to focus on challenges to defining methodical software development processes for aspects from early on in the software life cycle and explore the potential of proposed methods and techniques to scale up to industrial applications
Huge enhancement of electronmechanical responses in compositionally modulated PZT
Monte Carlo simulations based on a first-principles-derived Hamiltonian are
conducted to study the properties of PZT alloys compositionally modulated along
the [100] pseudocubic direction near the morphotropic phase boundary (MPB). It
is shown that compositional modulation causes the polarization to continuously
rotate away from the modulation direction, resulting in the unusual triclinic
and C-type monoclinic ground states and huge enhancement of electromechanical
responses (the peak of piezoelectric coefficient is as high as 30000 pC/N). The
orientation dependence of dipole-dipole interaction in modulated structure is
revealed as the microscopic mechanism to be responsible for these anomalies.Comment: 5 pages, 4 figure
Random walks on rings and modules
We consider two natural models of random walks on a module over a finite
commutative ring driven simultaneously by addition of random elements in
, and multiplication by random elements in . In the coin-toss walk,
either one of the two operations is performed depending on the flip of a coin.
In the affine walk, random elements are sampled
independently, and the current state is taken to . For both models,
we obtain the complete spectrum of the transition matrix from the
representation theory of the monoid of all affine maps on under a suitable
hypothesis on the measure on (the measure on can be arbitrary).Comment: 26 pages, 1 figure, minor improvements, final versio
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