1,720,967 research outputs found
Methodologies for continuous commissioning of integrated building systems
No full textAs a valid means to improve building sustainability, envelope and energy consuming systems’ (e.g. HVAC, BMS) commissioning should be performed continually during the whole building lifecycle. ICT-supported lifecycle commissioning of integrated systems is experiencing a rapid growth through international cooperation in Research and Development (R&D). Therefore, the author formulates the following hypothesis for his research: New properties should be constructed matching high energy standards. Furthermore, there is a need to maintain existing buildings regularly to prevent their degradation. If energy consumption of buildings is to be reduced and acceptable comfort levels are to be maintained, then Continual Commissioning (CC) methodologies should be deployed. However, all currently identified CC practices are based on specific skills and tools available to their developers, and without common methodological structure applicable to every system or facility under commissioning. This gap should be covered with formulation of the progressive, flexible and scalable concept called “Modular Continual Commissioning” (mCC). Practical application of this concept will help to save labour, time and costs required for building integrated systems’ operation and commissioning. It is expected that the results of this thesis will be generally applicable and can be used for the further development of Continual Commissioning (CC) processes in various facilities and will improve buildings’ comfort and efficiency
Enhancement of BIM Data Representation in Product-Process Modelling for Building Renovation
Get PDFBuilding Information Modelling (BIM) has the potential to become a technology which will help to use a holistic information repository to generate and represent relevant information in different building life-cycle stages (BLCS) to dedicated groups of stakeholders. However, the scope of model components of BIM data (e.g., IFC meta-data) is limited and some parts of it are not modelled in a manner that supports the diversity of engineering use cases. This paper aims to address this deficit by identifying the capability to formulate inference rules as one of the major benefits in the ontology-based information modelling approach. However, before one can formulate inferencing rules a detailed and in-depth understanding is required on how stakeholder information needs are defined in different BLCS and on how available, open-BIM meta-data models support these information requirements. Therefore, the research progressed initially on existing definitions for Level of Detail (LOD) and selected process-modelling standards (BLCS). In the subsequent part, different renovation Activities and the Stakeholder involvements are analysed. Use cases are defined and used as a grouping mechanism for selected scenarios. Based on these grouping mechanisms, a methodology of how components of a BIMmodel could be classified to support automated inferencing in the future. The outcome of this research is an established 6-dimensional intercommunication framework (LOD, BLS, Scenarios, Stakeholders, Use Cases, BIM model data) based on the Linked Building Data approach and focusing on renovation processes optimization. Based on the framework, a renovation Product-Process Modelling ontology is developed to connect existing components and to support new interoperable applications.:Abstract
1 Introduction and Backgroung
2 Renovation Framework
2.1 Level of Detail (LOD)
2.2 Building Life-Cycle Stage
2.3 Activity and Stakeholder
2.4 BIM Object (Product Information)
2.5 Use Cases
3 Product-Process Ontology
3.1 Activity – BIM Data – LOD
3.2 BLCS – Activity – Stakeholder
4 Validation
5 Conclusion
6 Future Work
Reference
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Gap analysis of current best practices in the area of continual commissioning
No full textThis paper analyses the status of Continual Commissioning (subsequently short-named as CC) aiming to improve the energy efficient design and operation of built artefacts. In order to develop a comprehensive vision of the CC market worldwide it is compulsory to establish a state-of-the-art analysis based on already existing Best Practices (BP). As a result of these identified challenges, commonalities, deficits, and potentials for collaboration are identified contributing to enhance harmonization between the CC-related technology developers. This paper proposes a systematic categorization approach to identify gaps in the current Best Practices in the area of Continual Commissioning. More than 500 companies and organizations related to this area have been analyzed, 100 of them have been selected for further categorization and analysis. The proposed method allows to identify major deficits of the related services offered within the specified categories. Finally, areas in CC which require substantial improvement are identified
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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