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The Hirschberg algorithm is commonly used for protein sequence alignment, which is a very important task in bioinformatics. This article presents the AFMC framework for using the Hirschberg method to perform sequence alignment in multiple cloud computing services of different models, such as Infrastructure‐as‐a‐Service and Function‐as‐a‐Service (FaaS). Experiments were carried out in which several...
Many scientific experiments in Bioinformatics are executed as computational workflows. Frequently, it is necessary to re-run an experiment under the original circumstances in which it was run to recognize and validate it. Data provenance concerns the origin of data. Knowing the data source facilitates the understanding and analysis of the results, by detailing and documenting the history and the paths...
Computer science solutions for molecular biology problems are often presented in the form of workflows. There is a set of activities performed by different processing entities through managed tasks. Knowledge about the data trajectory throughout a given workflow enables reproducibility by data provenance. In order to reproduce an in silico bioinformatics experiment one must consider other aspects...
Challenges in bioinformatics include tools to treat large-scale processing, mainly due to the large volumes of data generated by high-throughput sequencing machines. Besides, many of these tools are not user friendly, and do not distribute their workloads properly. In federated cloud environments, even though services and resources are shared and available online, the processes of a workflow execution...
Many research projects in bioinformatics may be viewed as scientific workflows. Biologists often run multiple times the same workflow with different parameters in order to refine their data analysis. These executions generate a large volume of files with different formats, which need to be stored for future evaluations. New database models, like NoSQL systems, could be considered to deal with large...
In a cloud computing environment, data replication is frequently used for failure recovery. However, data replication can be used also to improve the performance of the execution of application. In this context, this article presents a policy for data replication for a computational cloud with bioinformatics data, such that the execution of application of bioinformatics is reduced.
This work considers a scientific experiment as a computational workflow. Provenance models store details of each workflow execution, including produced data, computational tools parameters and their versions, among others. This way, scientists can review details of a particular workflow execution, compare information generated among different executions and plan new ones efficiently. In the bioinformatics...
With the advent of wireless communication networks and the new generation of smartphones, the access to data transmission networks has become possible anywhere at any time. Today, a group of users can gather in a dynamic manner and set up their own ad hoc communication networks and share geolocalization information thought Global Position System (GPS). Meanwhile, the use of social networks has seen...
This article aims to present the application R24Móvel, for nutritionists, which was developed for tablets with Android operating systems, and to discuss issues related to the development of this application. The article will show the application structure, functionality and actuation area, as well as the relevance of the application within the field of nutrition, automating one of the most important...
One challenge of public service managers is to use collective intelligence to approximate the opinion of citizens for administrative decisions. The rapid advance of Global Position System (GPS) and technologies included in Web 2.0, followed by greater accessibility to these technologies by citizens through smartphones, can be used to include the population that is present in public establishment environments,...
Since decisions are based on information, it is essential for any manager to have quick and convenient access to accurate and updated information. The Seismological Observatory of the University de Brasilia (UnB) owns and operates WebSISBRA, a GIS database for Brazilian seismic events data. The flow of accurate and updated information from and to this system relies on interoperability with other systems...
Bioinformatics tools require large-scale processing mainly due to very large databases achieving gigabytes of size. In federated cloud environments, although services and resources may be shared, storage is particularly difficult, due to distinct computational capabilities and data management policies of several separated clouds. In this work, we propose a storage policy for BioNimbuZ, a hybrid federated...
With the appearance of wireless communication networks and the new generation of mobile devices, the access to data transmission networks has become possible anywhere at any time. Today, a group of users may gather in a dynamic manner and set up their own ad hoc communication networks, which are named MANET (Mobile Ad hoc NETwork). In parallel, on the Internet, the use of social networks has soared,...
In this paper, we present a simple and fast inverse half toning algorithm, targeted at reconstructing half toned images generated using dispersed-dot ordered dithering algorithms. The proposed algorithm uses a simple set of linear filters combined with a stochastic model in order to predict the best intensity values for the binary image pixels. The algorithm produces images with a better perceptual...
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