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The chronicles paradigm has been used to determine fault in dynamic systems, allow modeling the temporal relationships between observable events to describe the patterns of behavior of the system. The chronicle recognition mechanisms used until now are semi-centralized approaches, which consist of a central component that is responsible for making the final inference about the fault diagnosis of the...
A competence-based teaching curriculum approach and propaedeutic cycles model has been taken by Fundación Universitaria Panamericana, which aims to ensure the appropriateness for the industry, so that is the reason it has focused its efforts to develop mechanisms to understand the needs and translate them into a dynamic, flexible and pertinent curriculum. For the software engineering program there...
Complex systems often exhibit unexpected faults that are difficult to handle. It is desirable that such systems are diagnosable, i.e. faults are automatically detected as they occur (or shortly afterwards), enabling the system to handle the fault or recover. Formally, a system is diagnosable if it is possible to detect every fault, in a finite time after they occurred, by only observing available...
In a group of individuals that come together to produce a good or provide a service the cooperators who pay to produce the good, are often exploited by those who receive the benefit without paying the cost. Models were developed over time using incentives (rewards or punishment) and the option of leaving the initiative to promote and stabilize the cooperation. In this paper we analyze several models...
In the Domain Engineering (DE) discipline, different approaches are used for one purpose, the treatment of non-functional requirements (NFR) to build a reference architecture (RA), or generic architecture from which all product members of a family of a domain, are generated. Consequently, the same process is adapted to different contexts and abstraction levels. This paper proposes a Unified Domain...
This paper studies the Vehicle Scheduling Problem (VSP) in the context of suburban passenger transportation. The problem consists in finding a set of sequences of trips which have to be assigned to the available fleet of buses. The complexity of this problem depends on the number of depots where the fleet is housed. The paper focuses on the resolution of Multiple Depot VSP (MDVSP) which has NP-Hard...
Cloud computing has the potential to revolutionize the way systems are developed and marketed. The cloud has become an important research subject in software engineering nowadays. Among the many research gaps related to this new computing model is the lack of portability between cloud platforms, which generates the Data Lock-In. The Data Lock-In is the difficulty in migrating data and applications...
In this work we pretend to characterize the traces of some peripheral storage devices or disks, with the aim of determining the presence of the selfsimilar model. We have twenty-three (23) storage devices, working with financial applications, during twelve (12) hours of system activity. Each measurement represents a read/write request to the device, shaped by the variables: arrival time of the request,...
Data that can be reused and redistributed without any restriction is called Open Data. These two features make its quality can be greatly affected. To date, the most used quality criteria of Open Data are those established in the 5-Stars Model. This article aims to extend this model and corroborate the existence of specific quality criteria for Open Data and its corresponding measurement mechanisms...
This paper considers the Flowshop Sequence Dependent Group Scheduling (FSDGS) problem In this problem, the n jobs to be processed on m machines are grouped in families (or groups) in a way that a machine setup time is needed between two consecutive jobs of different groups. The purpose of this problem is to determine the sequence of the groups and the sequence of the jobs within each group in order...
This paper proposes a methodology to identify the feasibility of applying Data Mining techniques (DM) in an organization (institutions or enterprises). This methodology can be applied when there are different sources of data and knowledge, and their interactions are not well identified or defined. The methodology consists of five phases defined to know and characterize the enterprise processes, its...
The hemoflagellate protozoan parasite Trypanosoma cruzi is the causative agent of the Chagas disease. The two drugs used clinically have a high level of toxicity and are active only during the acute phase of the disease, making it urgent the development of new safe and effective treatment. The first step in the screening of new compounds is to identify their effectiveness by manual microscopic counting...
This paper presents a model for the specification of hierarchical control of focus and input events in hypermedia applications that may contain atomic objects and nested compound objects. A proposal to solve the problems of declarative languages for both Web domain and Digital TV domain is described. The model proposed by us is part of the Digital TV profiles of NCL language specification. The model,...
We study in this work innovation in several Costa Rican software development companies, in order to associate to each of them a model of innovation management, according to the literature. This is done with the purpose of finding differences in innovation practices in such companies, and relate them with the type of innovations obtained in these companies.
Product Line Architecture (PLA) is the main tangible element shared by all products of a Software Product Line (SPL); it covers common functionality and the required variability of SPL products. Responding to industrial practice, this paper proposes a reactive refactoring bottom-up process to build a PLA from existing similar software product architectures of a domain, expressed by UML logical views...
In this work, we introduce a method to do object extraction in RGBD images. Our method consists in a depth-based approach which provides an insight into connectedness, proximity and planarity of the scene. We combine the depth and the color in a GraphCut framework to achieve robustness. Specifically, we propose a depth-based seeding which reduces the uncertainty and limitations of the traditional...
Motifs are useful in biology to highlight the nucleotides/amino-acids that are involved in structure, function, regulation and evolution, or to infer homology between genes/proteins. PROSITE is a strategy to model protein motifs as Regular Expressions and Position Frequency Matrices. Multiple tools have been proposed to discover biological motifs, but not for the case of the motifs comparison problem,...
Forest fires are a major risk factor with strong impact at ecological-environmental and socio-economical levels, reasons why their study and modeling is very important. However, the models frequently have a certain level of uncertainty in some input parameters given that they must be approximated or estimated, as a consequence of diverse difficulties to accurately measure the conditions of the phenomenon...
This work deals with the 0-1 knapsack problem in its two-dimensional variant, when there is a conflict graph related to pairs of conflicting items. Conflicting items must not be packed together in a same bin. This problem also arises as a subproblem in the bin packing problem and in supply chain scenarious. We propose a heuristic that generates iteratively a solution using a so called greedy randomized...
Goals analysis bases on goals identification and refinement processes to guide software development. In some cases, goals are explicitly formulated, in others cases goals are underlying inside organizational actors' needs. Different goals may be expressed in different levels of abstraction; it leads to decomposition in sub-goals for treatment of complexity. This research proposes a model for organizational...
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