3,101 research outputs found

    Model-Driven Methodology for Rapid Deployment of Smart Spaces based on Resource-Oriented Architectures

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    Advances in electronics nowadays facilitate the design of smart spaces based on physical mash-ups of sensor and actuator devices. At the same time, software paradigms such as Internet of Things (IoT) and Web of Things (WoT) are motivating the creation of technology to support the development and deployment of web-enabled embedded sensor and actuator devices with two major objectives: (i) to integrate sensing and actuating functionalities into everyday objects, and (ii) to easily allow a diversity of devices to plug into the Internet. Currently, developers who are applying this Internet-oriented approach need to have solid understanding about specific platforms and web technologies. In order to alleviate this development process, this research proposes a Resource-Oriented and Ontology-Driven Development (ROOD) methodology based on the Model Driven Architecture (MDA). This methodology aims at enabling the development of smart spaces through a set of modeling tools and semantic technologies that support the definition of the smart space and the automatic generation of code at hardware level. ROOD feasibility is demonstrated by building an adaptive health monitoring service for a Smart Gym

    A New Materials and Design Approach for Roads, Bridges, Pavement, and Concrete

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    Increased understanding of demand for transport energy and how to improve road pavement materials would enable decision makers to make environmental, financial, and other positive changes in future planning and design of roads, bridges, and other important transportation structures. This research comprises three studies focused on pavement materials and a fourth study that examines energy demand within the road transportation sector. These studies are as follows: 1. A techno-economic study of ground tire rubber as an asphalt modifier; 2. A computational fluid dynamics analysis comparing the urban heat island effect of two different pavement materials – asphalt and Portland Cement Concrete; 3. A new approach that modifies the surface of ground tire rubber using low-cost chemicals and treatment methods to be used in asphalt applications; and 4. Analysis of road transport energy demand in California and the United States. The findings of these studies include that 1. GTR is an effective and economically suitable additive for modified asphalt, 2. the suitability of PCC pavements in urban settings should be reexamined, 3. Surface modification of GTR materials can improve compatibilization of particles for the manufacture of asphalt materials, and 4. gasoline sales are generally price inelastic in both the U.S. and California. Ultimately, these four studies improve understanding of road pavement materials and transport energy demand. They lay out important information about the future of the relationship between materials and design in the transportation industry. These findings may be used by engineers, policymakers, and others in the industry to better consider implications of decisions involved in design, creation, and modification of structures using pavement and concrete, including roads, bridges, etc

    Modeling views in the layered view model for XML using UML

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    In data engineering, view formalisms are used to provide flexibility to users and user applications by allowing them to extract and elaborate data from the stored data sources. Conversely, since the introduction of Extensible Markup Language (XML), it is fast emerging as the dominant standard for storing, describing, and interchanging data among various web and heterogeneous data sources. In combination with XML Schema, XML provides rich facilities for defining and constraining user-defined data semantics and properties, a feature that is unique to XML. In this context, it is interesting to investigate traditional database features, such as view models and view design techniques for XML. However, traditional view formalisms are strongly coupled to the data language and its syntax, thus it proves to be a difficult task to support views in the case of semi-structured data models. Therefore, in this paper we propose a Layered View Model (LVM) for XML with conceptual and schemata extensions. Here our work is three-fold; first we propose an approach to separate the implementation and conceptual aspects of the views that provides a clear separation of concerns, thus, allowing analysis and design of views to be separated from their implementation. Secondly, we define representations to express and construct these views at the conceptual level. Thirdly, we define a view transformation methodology for XML views in the LVM, which carries out automated transformation to a view schema and a view query expression in an appropriate query language. Also, to validate and apply the LVM concepts, methods and transformations developed, we propose a view-driven application development framework with the flexibility to develop web and database applications for XML, at varying levels of abstraction

    Evaluating Enterprise Content Management Tools in a Real Context

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    Managing documentation in a suitable way has become a critical issue for any organization. Or ganizations depend on the information they store and they are required to have appropriate mechanisms to support the functional needs of information storage, management and retrieval. Currently, there are several tools in the market, both free software and proprietary license, nor mally named Enterprise Content Management (ECM) tools, which offer relevant solutions in this context. This paper presents a comparative study among several of the most commonly used ECM tools. It starts with a systematic review of the literature to analyze possible solutions and then it defines a characterization schema instantiated in a particular case, the Regional Government of AndalusiaMinisterio de EducaciĂłn y Ciencia TIN2013-46928-C3-3-

    Technical Tool Surveys and Comparative Studies: A Systematical Approach

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    Comparative studies and surveys on different technologies are common practices in research environments, not only when planning a new research line, but also in enterprise environment, for example, when a new project is going to be developed and the suitable technology must be selected. In the research context, an ordinary and formal method frequently followed to analyse the situation is the Systematic Literature Review (SLR). However, SLR is not enough, if the study is oriented towards comparing technologies or tools solutions. This paper presents a mechanism to be applied systematically in surveys and comparative studies of tools and technological solutions. It is based on general concepts defined in SLR, but it extends them in order to cover other necessities. The paper illustrates how this mechanism is applied to a real project named THOT and it offers conclusions and learned lessons from the last trends

    Technical Tool Surveys and Comparative Studies: A Systematical Approach

    Get PDF
    Comparative studies and surveys on different technologies are common practices in research environments, not only when planning a new research line, but also in enterprise environment, for example, when a new project is going to be developed and the suitable technology must be selected. In the research context, an ordinary and formal method frequently followed to analyse the situation is the Systematic Literature Review (SLR). However, SLR is not enough, if the study is oriented towards comparing technologies or tools solutions. This paper presents a mechanism to be applied systematically in surveys and comparative studies of tools and technological solutions. It is based on general concepts defined in SLR, but it extends them in order to cover other necessities. The paper illustrates how this mechanism is applied to a real project named THOT and it offers conclusions and learned lessons from the last trends.Ministerio de Ciencia e InnovaciĂłn TIN2013- 46928-C3-3-

    Implementing an Enterprise System: A dialectic perspective

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