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Articles 31 - 51 of 51
Full-Text Articles in Physical Sciences and Mathematics
Multi-Agent Orienteering Problem With Time-Dependent Capacity Constraints, Cen Chen, Shih-Fen Cheng, Hoong Chuin Lau
Multi-Agent Orienteering Problem With Time-Dependent Capacity Constraints, Cen Chen, Shih-Fen Cheng, Hoong Chuin Lau
Shih-Fen CHENG
The Orienteering Problem (OP), as originally defined by Tsiligirides, is the problem of cross-countr sport in which participants get rewards from visiting a predefined set of checkpoints. As Orienteering Problem can be used to describe a wide variety of real-world problems like route planning for facility inspection, patrolling of strategic location, and reward-weighted traveling salesman problem, it has attracted continuous interests from researchers and a large number of variants and corresponding algorithms for solving them have been introduced.
Interacting Knapsack Problem In Designing Resource Bundles, Truong Huy D. Nguyen, Pradeep Reddy Varakantham, Hoong Chuin Lau, Shih-Fen Cheng
Interacting Knapsack Problem In Designing Resource Bundles, Truong Huy D. Nguyen, Pradeep Reddy Varakantham, Hoong Chuin Lau, Shih-Fen Cheng
Shih-Fen CHENG
In many real-life businesses, the service provider/seller keeps a log of the visitors’ behavior as a way to assess the efficiency of the current business/operation model and find room for improvement. For example, by tracking when visitors entering attractions in a theme park, theme park owners can detect when and where congestion may occur, thus having contingency plans to reroute the visitors accordingly. Similarly, a Cable TV service provider can track channel switching events at each household to identify uninteresting channels. Subsequently, the repertoire of channels up for subscription can evolve over time to better serve the entertainment demand of …
Challenges For Mapreduce In Big Data, Katarina Grolinger, Michael Hayes, Wilson Higashino, Alexandra L'Heureux, David Allison, Miriam Capretz
Challenges For Mapreduce In Big Data, Katarina Grolinger, Michael Hayes, Wilson Higashino, Alexandra L'Heureux, David Allison, Miriam Capretz
Wilson A Higashino
In the Big Data community, MapReduce has been seen as one of the key enabling approaches for meeting continuously increasing demands on computing resources imposed by massive data sets. The reason for this is the high scalability of the MapReduce paradigm which allows for massively parallel and distributed execution over a large number of computing nodes. This paper identifies MapReduce issues and challenges in handling Big Data with the objective of providing an overview of the field, facilitating better planning and management of Big Data projects, and identifying opportunities for future research in this field. The identified challenges are grouped …
Architecture-Based Self-Protection: Composing And Reasoning About Denial-Of-Service Mitigations, Bradley Schmerl, Javier Camara, Jeffrey Gennari, David Garlan, Paulo Casanova, Gabriel A. Moreno, Thomas J. Glazierr, Jeffrey M. Barnes
Architecture-Based Self-Protection: Composing And Reasoning About Denial-Of-Service Mitigations, Bradley Schmerl, Javier Camara, Jeffrey Gennari, David Garlan, Paulo Casanova, Gabriel A. Moreno, Thomas J. Glazierr, Jeffrey M. Barnes
Gabriel A. Moreno
Security features are often hardwired into software applications, making it difficult to adapt security responses to reflect changes in runtime context and new attacks. In prior work, we proposed the idea of architecture-based self-protection as a way of separating adaptation logic from application logic and providing a global per- spective for reasoning about security adaptations in the context of other business goals. In this paper, we present an approach, based on this idea, for combating denial-of-service (DoS) attacks. Our approach allows DoS-related tactics to be composed into more so- phisticated mitigation strategies that encapsulate possible responses to a security problem. …
Sensing Hand Tremor In A Vitreoretinal Microsurgical Instrument, Mario Gomez-Blanco, Cameron N. Riviere, Pradeep Khosla
Sensing Hand Tremor In A Vitreoretinal Microsurgical Instrument, Mario Gomez-Blanco, Cameron N. Riviere, Pradeep Khosla
Pradeep K Khosla
An instrument for intraoperative sensing of surgeons’ hand tremor during vitreoretinal microsurgery has been developed. Real-time monitoring of tremor is useful to surgeons for purposes of training, adjustment of technique, monitoring of fatigue, and deciding when or whether to perform certain procedures. The instrument incorporates six inertial sensors (three accelerometers and three rate gyros), mounted at the back end of the handle, to detect translation and rotation in six degrees of freedom. The accelerometer data are integrated to obtain translational velocity, and the gyro data are integrated to determine the time-varying rotation matrix needed to transform the instrument motion to …
Maturity Assessment Framework For Business Dimension Of Software Product Family, Faheem Ahmed, Luiz Fernando Capretz
Maturity Assessment Framework For Business Dimension Of Software Product Family, Faheem Ahmed, Luiz Fernando Capretz
Luiz Fernando Capretz
The software product family approach aims at curtailing the concept of “reinventing the wheel” in the software development process. The business has been highlighted as one of the critical dimensions in the process of software product family. This work presents an assessment framework for evaluating the business dimension of software product family process. Additionally, a software product family business evaluation tool has been designed and implemented on the basis of the presented framework. The tool preprocesses the data of key business factors, and it evaluates the overall business maturity of an organization. To demonstrate the application of the framework, and …
A Conceptual Framework For Measuring The Quality Aspect Of Mobile Learning, Luiz Fernando Capretz, Abdalha Ali, Abdelkader Ouda
A Conceptual Framework For Measuring The Quality Aspect Of Mobile Learning, Luiz Fernando Capretz, Abdalha Ali, Abdelkader Ouda
Luiz Fernando Capretz
With the continuing growth of mobile phones outpacing that of desktops and laptops, mobile phones are the new personal computer. These devices started becoming increasingly sophisticated and extremely powerful. In addition to making phone calls it have the capabilities to perform variety functions, one of the most important functions using it as a classroom tool. However, mobile phone applications must be designed and developed with respect to different technologies skills, learning capabilities and language proficiency in order to be accepted by wide audiences (e.g., students, instructors). However, there is much work that has been done to measure the quality of …
Implications Of Mbti In Software Engineering Education, Luiz Fernando Capretz
Implications Of Mbti In Software Engineering Education, Luiz Fernando Capretz
Luiz Fernando Capretz
A number of approaches exist to aid the understanding of individual differences and their effects on teaching and learning. Educators have been using the Myers-Briggs Type Indicator (MBTI) to understand differences in learning styles and to develop teaching methods that cater for the various personality styles. Inspired by the MBTI, we developed a range of practices for effective teaching and learning in a software engineering course. Our aim is to reach every student, but in different ways, by devising various teaching approaches.
Component-Based Software Development, Luiz Fernando Capretz, Miriam Capretz, Dahai Li
Component-Based Software Development, Luiz Fernando Capretz, Miriam Capretz, Dahai Li
Luiz Fernando Capretz
Component-based software development (CBSD) strives to achieve a set of pre-built, standardized software components available to fit a specific architectural style for some application domain; the application is then assembled using these components. Component-based software reusability will be at the forefront of software development technology in the next few years. This paper describes a software life cycle that supports component-based development under an object-oriented framework. Development time versus software life cycle phases, which is an important assessment of the component-based development model put forward, is also mentioned.
Fuzzy-Excom Software Project Risk Assessment, Luiz Fernando Capretz, Ekananta Manalif, Ali Bou Nassif, Danny Ho
Fuzzy-Excom Software Project Risk Assessment, Luiz Fernando Capretz, Ekananta Manalif, Ali Bou Nassif, Danny Ho
Luiz Fernando Capretz
A software development project can be considered to be risky project due to the uncertainty of the information (customer requirements), the complexity of the process, and the intangible nature of the product. Under these conditions, risk management in software development projects is mandatory, but often it is difficult and expensive to implement. Expert COCOMO is an efficient approach to software project risk management, which leverages existing knowledge and expertise from previous effort estimation activities to assess the risk in a new software project. However, the original method has a limitation because it cannot effectively deal with imprecise and uncertain inputs …
Using Meta-Ethnography To Synthesize Research: A Worked Example Of The Relations Between Personality On Software Team Processes, Fabio Q. B. Silva Dr., Shirley S. J. O. Cruz, Tatiana B. Gouveia, Luiz Fernando Capretz
Using Meta-Ethnography To Synthesize Research: A Worked Example Of The Relations Between Personality On Software Team Processes, Fabio Q. B. Silva Dr., Shirley S. J. O. Cruz, Tatiana B. Gouveia, Luiz Fernando Capretz
Luiz Fernando Capretz
Context: The increase in the number of qualitative and mixed-methods research published in software engineering has created an opportunity for further knowledge generation through the synthesis of studies with similar aims. This is particularly true in the research on human aspects because the phenomena of interest are often better understood using qualitative research. However, the use of qualitative synthesis methods is not widespread and worked examples of their consistent application in software engineering are needed. Objective: To explore the use of meta-ethnography in the synthesis of empirical studies in software engineering through an example using studies about the relations between …
An Architecture Maturity Model Of Software Product Line, Faheem Ahmed, Luiz Fernando Capretz
An Architecture Maturity Model Of Software Product Line, Faheem Ahmed, Luiz Fernando Capretz
Luiz Fernando Capretz
Software architecture has been a key research area in the software engineering community due to its significant role in creating high-quality software. The trend of developing product lines rather than single products has made the software product line a viable option in the industry. Software product line architecture (SPLA) is regarded as one of the crucial components in the product lines, since all of the resulting products share this common architecture. The increased popularity of software product lines demands a process maturity evaluation methodology. Consequently,this paper presents an architecture process maturity model for software product line engineering to evaluate the …
Calibrating Function Point Backfiring Conversion Ratios Using Neuro-Fuzzy Technique, Justin Wong, Luiz Fernando Capretz, Danny Ho
Calibrating Function Point Backfiring Conversion Ratios Using Neuro-Fuzzy Technique, Justin Wong, Luiz Fernando Capretz, Danny Ho
Luiz Fernando Capretz
Software estimation is an important aspect in software development projects because poor estimations can lead to late delivery, cost overruns, and possibly project failure. Backfiring is a popular technique for sizing and predicting the volume of source code by converting the function point metric into source lines of code mathematically using conversion ratios. While this technique is popular and useful, there is a high margin of error in backfiring. This research introduces a new method to reduce that margin of error. Neural networks and fuzzy logic in software prediction models have been demonstrated in the past to have improved performance …
Cots-Based Software Product Line Development, Luiz Fernando Capretz, Faheem Ahmed, Shereef Al-Maati, Zaher Alaghbari
Cots-Based Software Product Line Development, Luiz Fernando Capretz, Faheem Ahmed, Shereef Al-Maati, Zaher Alaghbari
Luiz Fernando Capretz
Software Product Line (SPL) is at the forefront among the techniques for reducing costs, decreasing schedule time, and ensuring commonality of features across a family of products - as components off-the-shelf (COTS) are reused in multiple products. A disciplined process for software product line development is still needed. We propose the Y-model for COTS-based software product line development. The model put forward identifies and elaborates the essential phases and activities of software product line development from COTS-based repository. The Y-model provides an efficient way of integrating the approaches of software product line and COTS-based development as a cohesive software development …
An Organizational Maturity Model Of Software Product Line Engineering, Faheem Ahmed, Luiz Fernando Capretz
An Organizational Maturity Model Of Software Product Line Engineering, Faheem Ahmed, Luiz Fernando Capretz
Luiz Fernando Capretz
Software product line engineering is an inter-disciplinary concept. It spans the dimensions of business, architecture, process, and the organization. Some of the potential benefits of this approach include cost reduction, improvements in product quality and a decrease in product development time. The increasing popularity of software product line engineering in the software industry necessitates a process maturity evaluation methodology. Accordingly, this paper presents an organizational maturity model of software product line engineering for evaluating the maturity of organizational dimension. The model assumes that organizational theories, behavior, and management play a critical role in the institutionalization of software product line engineering …
A New Calibration For Function Point Complexity Weights, Wei Xia, Luiz Fernando Capretz, Danny Ho, Faheem Ahmed
A New Calibration For Function Point Complexity Weights, Wei Xia, Luiz Fernando Capretz, Danny Ho, Faheem Ahmed
Luiz Fernando Capretz
Function Point (FP) is a useful software metric that was first proposed twenty-five years ago, since then, it has steadily evolved into a functional size metric consolidated in the well-accepted Standardized International Function Point Users Group (IFPUG) Counting Practices Manual - version 4.2. While software development industry has grown rapidly, the weight values assigned to count standard FP still remain same, which raise critical questions about the validity of the weight values. In this paper, we discuss the concepts of calibrating Function Point, whose aims are to estimate a more accurate software size that fits for specific software application, to …
Federated Critical Infrastructure Simulators: Towards Ontologies For Support Of Collaboration, Katarina Grolinger, Miriam Am Capretz, Adam Shypanski, Gagandeep S. Gill
Federated Critical Infrastructure Simulators: Towards Ontologies For Support Of Collaboration, Katarina Grolinger, Miriam Am Capretz, Adam Shypanski, Gagandeep S. Gill
Katarina Grolinger
Our society relies greatly on a variety of critical infrastructures (CI), such as power system networks, water distribution, oil and natural gas systems, telecommunication networks and others. Interdependency between those systems is high and may result in cascading failures spanning different infrastructures. Behavior of each CI can be observed and analyzed through the use of domain simulators, but this does not account for their interdependency. To explore CI interdependencies, domain simulators need to be integrated in a federation where they can collaborate. This paper explores three different simulators: the EPANET water distribution simulator, the PSCAD power system simulator and the …
From Glossaries To Ontologies: Disaster Management Domain, Katarina Grolinger, Kevin P. Brown, Miriam A.M. Capretz
From Glossaries To Ontologies: Disaster Management Domain, Katarina Grolinger, Kevin P. Brown, Miriam A.M. Capretz
Katarina Grolinger
Our society’s reliance on a variety of critical infrastructures (CI) presents significant challenges for disaster preparedness, response and recovery. Experts from different domains including police, paramedics, firefighters and various other CI teams are involved in the fast paced response to a disaster, increasing the risk of miscommunication. To ensure clear communication, as well as to facilitate CI software interoperability, a common disaster ontology is needed. We propose using the knowledge stored in domain glossaries, vocabularies and dictionaries for the creation of a lightweight disaster management domain ontology. Glossaries, vocabularies and dictionaries are semi structured representations of domain knowledge, where significant …
Ontology–Based Representation Of Simulation Models, Katarina Grolinger, Miriam A.M. Capretz, José R. Marti, Krishan D. Srivastava
Ontology–Based Representation Of Simulation Models, Katarina Grolinger, Miriam A.M. Capretz, José R. Marti, Krishan D. Srivastava
Katarina Grolinger
Ontologies have been used in a variety of domains for multiple purposes such as establishing common terminology, organizing domain knowledge and describing domain in a machine-readable form. Moreover, ontologies are the foundation of the Semantic Web and often semantic integration is achieved using ontology. Even though simulation demonstrates a number of similar characteristics to Semantic Web or semantic integration, including heterogeneity in the simulation domain, representation and semantics, the application of ontology in the simulation domain is still in its infancy. This paper proposes an ontology-based representation of simulation models. The goal of this research is to facilitate comparison among …
Autonomic Database Management: State Of The Art And Future Trends, Katarina Grolinger, Miriam Am Capretz
Autonomic Database Management: State Of The Art And Future Trends, Katarina Grolinger, Miriam Am Capretz
Katarina Grolinger
In recent years, Database Management Systems (DBMS) have increased significantly in size and complexity, increasing the extent to which database administration is a time-consuming and expensive task. Database Administrator (DBA) expenses have become a significant part of the total cost of ownership. This results in the need to develop Autonomous Database Management systems (ADBMS) that would manage themselves without human intervention. Accordingly, this paper evaluates the current state of autonomous database systems and identifies gaps and challenges in the achievement of fully autonomic databases. In addition to highlighting technical challenges and gaps, we identify one human factor, gaining the trust …
Confucius: A Tool Supporting Collaborative Scientific Workflow Composition, Jia Zhang, Daniel Kuc, Shiyong Lu
Confucius: A Tool Supporting Collaborative Scientific Workflow Composition, Jia Zhang, Daniel Kuc, Shiyong Lu
Jia Zhang
Modern scientific data management and analysis usually rely on multiple scientists with diverse expertise. In recent years, such a collaborative effort is often structured and automated by a data flow-oriented process called scientific workflow. However, such workflows may have to be designed and revised among multiple scientists over a long time period. Existing workbenches are single user-oriented and do not support scientific workflow application development in a “collaborative fashion.” In this paper, we report our research on the enabling techniques in the aspects of collaboration provenance management and reproduciability. Based on a scientific collaboration ontology, we propose a service-oriented collaboration …