Metamodeling or profiling: a practical case in the web engineering domain

Model Driven Development (MDD) provides several choices for the definition of modeling languages. The definition of a complete metamodel and the customization of a given metamodel using profiles are common approaches. In our opinion neither of these approaches is better than the other, and the choice should depend on the characteristics of each project. This paper describes our experiences defining a graphical notation for the characterization of web navigational maps based on a MOF metamodel and a UML profile. The advantages and drawbacks of both approaches are examined, as well as the solution selected for our project.Presentado en el VIII Workshop Ingeniería de Software (WIS)Red de Universidades con Carreras en Informática (RedUNCI

Metamodeling or profiling: a practical case in the web engineering domain

Model Driven Development (MDD) provides several choices for the definition of modeling languages. The definition of a complete metamodel and the customization of a given metamodel using profiles are common approaches. In our opinion neither of these approaches is better than the other, and the choice should depend on the characteristics of each project. This paper describes our experiences defining a graphical notation for the characterization of web navigational maps based on a MOF metamodel and a UML profile. The advantages and drawbacks of both approaches are examined, as well as the solution selected for our project.Presentado en el VIII Workshop Ingeniería de Software (WIS)Red de Universidades con Carreras en Informática (RedUNCI

Una aproximación dirigida por modelos para la caracterización de la capa de presentación web de aplicaciones empresariales

Actualmente, UML es la notación de diseño más ampliamente usada en el diseño y desarrollo de software orientado a objetos. Sin embargo, UML estándar no es suficiente para caracterizar la capa de presentación Web de las aplicaciones empresariales. La comunidad de la Ingeniería Web ha proporcionado el concepto de mapa navegacional para tratar de gestionar la complejidad inherente a las aplicaciones Web. Siguiendo este concepto, hemos desarrollado NMMp, una notación de diseño que, como las notaciones de la Ingeniería Web, proporciona una visión abstracta de la estructura navegacional dela capa de presentación Web. Sin embargo, a diferencia de estas, promueve la inclusión explícita de todo el catálogo de patrones arquitectónicos y de diseño en los modelos, los cuales, son ampliamente usados en el sector industrial.Sin embargo, NMMp no tiene en cuenta la caracterización de frameworks específicos usados ampliamente en el desarrollo de la capa de presentación Web de aplicaciones empresariales modernas. Generalmente, estos frameworks soportan el desarrollo de la navegación, la estructura de presentación y el control de acceso basado en roles (RBAC),características presentes en la mayoría de este tipo de aplicaciones. Siguiendo la filosofíade NMMp, hemos desarrollado el enfoque Enterprise Web Application Extensión (EWAE),como un conjunto de extensiones UML que soportan el modelado de estas características presentes en frameworks específicos..

Metocean data management and modeling to support U.S. offshore wind power development in the Mid-Atlantic

Efforts to encourage more conservative electricity consumption, through public awareness campaigns and government-mandated energy efficiency standards, have consistently been overshadowed by population increase and increased standards of living, leading to higher electricity demand, year after year. Sufficient resources and technology exist to support the development of a robust offshore wind industry to help meet this rising demand, but a number of barriers unique to the U.S. have hindered progress. Addressing many of these obstacles involves resolving uncertainty issues related to development. Not only is there a general lack of data to provide stakeholders, developers, and governing authorities with sufficient information for informed decision-making for offshore wind projects, but the data that do exist are often fragmented or isolated within a particular project or application. There is an immediate need to improve the reliability of metocean data as it pertains to characterizing the offshore wind resource, and to share that and other related information in a standard format that promotes and encourages interoperability across multiple platforms associated with offshore wind development. The methodology for addressing some of these data challenges began with the evaluation of a proposed improvement to a particular atmospheric modeling system being utilized to provide wind resource data within the “Virginia Offshore Wind Advanced Technology Demonstration Site Development” project. By considering the current limitations associated with SST data acquisition and initial analyses, it was determined that the integration of higher resolution SST data would be valuable only if latency issues in the data were resolved, which would require the development of an SST forecasting mode to be coupled with the operational model. This did not prove justifiable due to the lack of significant improvements in wind speed forecasting capability. Data accessibility issues were then addressed in the development of a web mapping portal designed to dynamically display geo-referenced project results and integrate publicly-available metocean data. By utilizing best practices for data sharing and information dissemination, optimum interoperability was established through smart design and the use of standard web service protocols

Impact of Vessel Noise on Oyster Toadfish (Opsanus tau) Behavior and Implications for Underwater Noise Management

Underwater noise and its impacts on marine life are growing management concerns. This dissertation considers both the ecological and social concerns of underwater noise, using the oyster toadfish (Opsanus tau) as a model species. Oyster toadfish call for mates using a boatwhistle sound, but increased ambient noise levels from vessels or other anthropogenic activities are likely to influence the ability of males to find mates. If increased ambient noise levels reduce fish fitness then underwater noise can impact socially valued ecosystem services (e.g. fisheries)