196 research outputs found
Designing a Metadata Model for Unstructured Document Management in Organizations
No full textAt present Document Management represents a critical problem for organizations, where a growing amount of information is produced in unstructured format. Metadata sets for Document Management addressing organizational needs are lacking, as most research efforts for Metadata specifications are focused on digital libraries and web communities requirements, rather than organizational ones. In this paper we propose a Metadata Model for Unstructured Document Management, called DMSML Document Management and Sharing Markup Language, which aims at modeling intrinsic properties of documents (e.g. title, author and keywords) as well as the relationships with the organizational context. Furthermore, while most metadata specifications don't rely on a well-developed data modeling methodology, our proposal is based on a three-layered data modeling approach, distinguishing a conceptual, logical and physical layer. This approach encourages understanding and easy adoption of metadata specifications among end users. At present we are developing a DMSML Framework prototype for validation purposes
ISO 19650 standards in Web GIS for project's information management including GIS & BIM
No full textIn large and complex civil engineering projects, well-managed information enables easier and faster access to the required data when available. In the Architecture, Engineering and Construction (AEC) industry, professionals and data managers constantly seek to optimize the information management process to better collaborate in projects that include GIS & BIM integrated workflows. The publication of ISO 19650-1:2018 & ISO 19650-2:2018 (ISO 19650-1&2:2018) standards on best practices for information management, including BIM, was recognized as an opportunity to the digital organization of these processes. As a result, main BIM software vendors have started supporting ISO 19650-1&2:2018 in their platforms, and (non)-governmental organizations have started adopting them in their projects. However, the advancement in the field of GIS BIM integration and the tightly integrated workflows drew the attention towards the need for supporting ISO 19650-1&2:2018in Web GIS for web services. I3S web service is an example of an open OGC Community standard that allows the consumption of 3D GIS data and 3D GIS data converted from 3D BIM data in Web GIS. In this thesis, field analysis addresses the challenges and the role of the Web GIS platform in projects information management processes of the Hoogwaterbeschermingprogramma (HWBP) as a case study. Then, literature studies review ISO 19650-1&2:2018 in the context of the HWBP to highlight the need for a Common Data Environment (CDE) in the Web GIS platform to support ISO 19650-1&2:2018. Moreover, the review tackles the CDE components specified in Part-2 of ISO 19650-1&2:2018, such as metadata allocation. Finally, this thesis discussed the implementation of the CDE components for I3S web services in ArcGIS Online as a Web GIS platform. The novel contribution of this thesis is providing a contextual overview of ISO 19650-1&2:2018 standards in the project information management processes that include working with GIS & BIM data. Moreover, using the British national annex (BS EN ISO 19650-1&2), a flowchart was developed for the metadata allocation systems of information container workflows. Furthermore, the reference implementation discussed a variety of options to implement the metadata allocation components in Web GIS. The discussion provided a solution and PoC functionalities of the CDE components for managing I3S web services. The resulting solution on the CDE components can be utilized to configure CDE workflows and technical solutions to enable ISO 19650-1&2:2018 compliant workflowsin Web GIS.Geomatic
An Auction Approach to Resource Allocation with Interference Coordination in LTE-A Systems
No full textAbstract-We propose a resource allocation scheme based on the auction algorithm that aims at minimizing inter-cell interference (ICI) in multi-carrier LTE-A systems. The prices paid for resources by cell-edge users are infrequently exchanged between adjacent cells to help deciding who needs a specific resource the most. Furthermore, the Relative Narrowband Transmit Power (RNTP) indicator that is exchanged between cells in the LTE-A system is exploited to minimize the information exchange rate. When RNTP is used, only resources that suffer interference higher than a certain threshold are considered in the price exchange mechanism. Performance evaluation results show that the proposed scheme significantly improves the cell-edge throughput. The use of RNTP not only minimizes the exchange overhead, especially in a multi-carrier scenario, but it also improves the system performance as the cell neighbors would not avoid using a resource unless they are the culprit interferers to the original cell that uses it
Enhanced ABSF offsetting with virtual arbitrary blanking rate for time domain eICIC in LTE-Advanced
No full textPerformance evaluation of a coordinated time-domain eICIC framework based on ABSF in heterogeneous LTE-Advanced networks
No full textABSF offsetting and optimal resource partitioning for eICIC in LTE-Advanced: Proposal and analysis using a Nash bargaining approach
No full textAn auction approach to resource allocation with interference coordination in LTE-A systems
No full textA transportation problem based resource allocation scheme for an LTE-Advanced system with carrier aggregation
No full textPerformance analysis of soft frequency reuse schemes for a multi-cell LTE-advanced system with carrier aggregation
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