Application software

About: Application software is a research topic. Over the lifetime, 12185 publications have been published within this topic receiving 219822 citations. The topic is also known as: software application & application software.

Similarity-based load adjustment for real-time data-intensive applications

Abstract: How to exploit application semantics to improve the performance of a real-time data-intensive application has been an active research topic in the past few years. Weaker correctness criteria and semantics-based concurrency control algorithms were proposed to provide more flexibility in reordering read and write events. Distinct from the past work, this paper exploits the tradeoff between data consistency and system workload. The definition of similarity is combined with the idea of transaction skipping to provide a theoretical foundation for reducing the workload of a transaction system. We also propose guidelines to adjust the execution frequencies of a static set of transactions and prove their correctness. The strengths of this work were verified by simulation experiments on an air traffic control example (Peng et al., 1997).

Simulation of Software Behavior Under Hardware Faults

Abstract: A simulation-based software-model that permits application specific dependability analysis in the early design stages is introduced. The model represents an application program by decomposing it into a graph model consisting of a set of nodes, a set of edges that probabilistically determine the flow from node to node, and a mapping of the nodes to memory. The software model simulates the execution of the program while errors are injected into the program's memory space. The model provides application-dependent parameters such as detection and propagation times and permits evaluation of function on system level error detection and recovery schemes. A case study illustrates the interaction between an application program and two detection schemes. Specifically, Gaussian elimination programs running on a Tandem Integrity S2 system with memory scrubbing are studied. Results from the simulation-based software model are validated with data measured from an actual Tandem Integrity S2 system. Application dependent coverage values obtained with the model are compared with those obtained via traditional schemes that assume uniform or ramp memory access patterns. For the authors' program, some coverage values obtained with the traditional approaches were found to be 100% larger than those obtained with the software model.

Using workflows to coordinate Web services in pervasive computing environments

Abstract: Pervasive computing environments augment physical spaces with a large number of devices and services that help users perform different kinds of tasks. Users in these environments interact with one or more Web services using various devices to achieve their goals. One of the problems in these environments is discovering and coordinating different Web services for achieving the user's goals. Users may not be aware of which services and devices are available in an unfamiliar environment and how to interact with them in order to achieve their goals. In order to simplify a user's interaction with the environment, we present a novel approach of modeling and managing a user's interaction with the environment based on workflows. We have built a prototype, using the popular business workflow language (BPEL) that models various processes in pervasive environments as workflows. We found that this approach improves the usability of these environments. It also increases flexibility in changing the model of interaction without having to touch individual services and applications. This approach is particularly useful in helping visitors in public spaces like malls, museums, supermarkets and hospitals.

RESEARCH NOTE Software and Culture: Beyond the Internationalization of the Interface

Abstract: Software applications are designed around user interaction. One interaction component is the user interface; the other deeper components represent the applications’ logic and core functionality. Internationalization architectures recognize the need for localizing user interfaces to particular cultures. We continue the discussion on culture and software focusing on the software core rather than the user interface. This core corresponds to deep culture as opposed to the surface cultural manifestations embedded in the user interface. We argue here that deep culture can be embedded into application software in a modular way.

Asynchronous distributed genetic algorithms with Javascript and JSON

Abstract: In a connected world, spare CPU cycles are up for grabs, if you only make its obtention easy enough. In this paper we present a distributed evolutionary computation system that uses the computational capabilities of the ubiquituous Web browser. Asynchronous Javascript and JSON (Javascript object notation, a serialization protocol) allows anybody with a Web browser (that is, mostly everybody connected to the Internet) to participate in a genetic algorithm experiment with little effort, or none at all. Since, in this case, computing becomes a social activity and is inherently impredictable, in this paper we will explore the performance of this kind of virtual computer by solving simple problems such as the royal road function and analyzing how many machines and evaluations it yields. We will also examine possible performance bottlenecks and how to solve them, and, finally, issue some advice on how to set up this kind of experiments to maximize turnout and, thus, performance. The experiments show that we we can obtain high, and to a certain point, reliable performance from volunteer computing based on AJAJ, with speedups of up to several (averaged) machines.