140 research outputs found
The Sensitive Office: A demonstrator for sensing the enterprise environment
No full textThe Centre for Advanced Studies of IBM Amsterdam (IBM CAS) has an ambitious plan to revolutionize the workforce. Within the Inclusive Enterprise research line they aim to investigate and map the factors that influence employee well-being. Among these factors, we may find environmental factors that can be coupled to measurable quantities such as temperature, light intensity or humidity. IBM CAS approached the TU Delft to create a demonstrator for a system that can measure these quantities by using IoT devices, and collect the data that is produced by such measurements. Based on the wishes of IBM CAS, requirements at both a system- and a data-level have been composed. Existing solutions were found to be too specific for the fulfillment of a single goal, still in a prototypical state, licensed commercially nonviable, or targeted at a single platform. Based upon a literature study, investigation of previously mentioned existing solutions and thorough analysis of requirements, a client-server architecture was designed. The system architecture consists out of four components: (1) the sensor nodes, responsible for measuring, (2) the hub nodes, responsible for channeling data between the sensor node and the server, (3) the server, responsible for system configuration and data collection, and (4) the database, responsible for storing and providing access to this data. The constructed architecture is not limited to a single context, and can function as a framework for measurement systems. The strength of the design lies in its platform-independent nature, and its traceable data model. The system has been implemented on the Arduino and Android platform for the sensor node, Java for the hub node, and IBM Bluemix for the server. It has been thoroughly tested using platform-specific frameworks (e.g. JUnit with EclEmma, Mocha with Istanbul) and analyzed using static code analysis (e.g. Sonarqube, SIG evaluation), making it a product of high quality code. The system has been developed with the explicit intention of being continued upon in the future, to grow from a demonstrator into a commercial product.Web Information SystemsSoftware and Computer TechnologyElectrical Engineering, Mathematics and Computer Scienc
Verslag behorende bij het processchema: Neopreen
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
Formation of beach marks on alclad 2024-T3 sheet
No full textTechnische MateriaalwetenschappenApplied Science
Gedrag van helium in goud
No full textMechanical, Maritime and Materials EngineeringTechnische Materiaalwetenschappe
Methoden voor het meten van snelheid en sedimentkoncentratie in de brandingszone: Inventarisatie, evaluatie en advies
No full textThree-dimensional finite element analysis of offshore jack-up structures accounting for non-linear soil-structure interaction
No full textJack-up structures are widely used in the offshore industry. Not only in the field of oil and gas, but also in the installation for offshore wind turbines. These jack-up structures typically consist of three trusswork legs, where the foundation is formed by inverted conical cones that are penetrated into the soil, called spudcans. The spudcans transfer the combination of weight and environmental loading to the underlying soil. Jack-up structures are assessed for each particular offshore site, where their stability is checked for a 50 year return period storm as prescribed by the current guidelines. The behaviour of the jack-up structures is strongly influenced by the restraint given by the spudcan footings. This phenomenon is generally described as fixity and is a complicated effect, governed by the interaction between soil and structure. To properly take into account this effect, computational models are needed that incorporate the complicated non-linear behaviour of the jack-up foundation in a structural framework. This paper describes the three-dimensional finite element modelling of a generic jack-up structure, that takes into account the interaction of soil and structure. Through calibration, the complicated non-linear behaviour of the soil is captured in the model. A benchmark study is performed, where the prediction of the finite element model is compared to experimental tests, as well as a macroelement model. This comparison shows that the finite element model is capable of describing the global behaviour of the jack-up unit under loading, as well as the behaviour of the individual spudcan footings. Furthermore, it has been shown through parametric analyses that emphasis should be placed on the calibration of soil parameters under compression, especially at high stresses. The dilative behaviour of the soil has a positive influence on both the global capacity and stiffness, as does an increase of preloading of the structure. The loading direction along the axis of symmetry provides the highest global capacity and stiffness of the rig during loading. Torsional loading of the structure predicts a significant torsional moment at the spudcan footings and predicts a rotation of these footings in the soil. The incorporation of a large-deformation finite element framework has shown to be crucial in the proper prediction of the behaviour of the jack-up structure during push-over loading.Civil Engineering and GeosciencesGeoscience & Engineerin
Usage of Lifts for the Evacuation of High-Rise Projects: An International Discussion from a Dutch Perspective
No full textThe concept of using lifts for evacuation purposes in buildings is a major point of international discussion in the field of fire safety engineering. While building heights in the Netherlands are increasing, the population is ageing and people with (temporary) physical limitations expect to be able to fully participate in society. This rises the question whether total building evacuation via only stairs remains as safe as it is perceived to be. In my thesis research I was able to determine that lifts are both a viable and desirable option for emergency egress in the Netherlands.Building EngineeringCivil Engineering and Geoscience
Bouwstenen voor DRTS-telefoniesoftware
No full textTeneinde een aanvang te kunnen maken met de praktische ontwikkeling van telefoniesoftware voor het DRTS-project, is een software-laag gespecificeerd, waarin 'lowlevel' bouwstenen voor telefoniesoftware zijn opgenomen. M.b.v. deze bouwstenen moet het mogelijk zijn om zogenaamde call-handling software op hardware-onafhankelijke wijze te ontwikkelen . Tevens wordt het gebruik van een TBX-50 PABX als testomgeving voor software-ontwikkeling beschreven.Electrical Engineering, Mathematics and Computer ScienceTelecommunicatie- en Verkeersbegeleidingssysteme
Docklands yards
No full textDocklands Yards is a proposal for a building complex that combines dwelling and working to form a vital sustainable environment. Two main courtyards represent the most prominent features. Their setup is based on the ancient Roman 'domus' type. The first courtyard - 'atrium' - is open to public and surrounded by shops. The second courtyard - 'peristyle' - gives access to the surrounding flats. It is of private nature and offers a small garden. The design is based on research into Berlin Mietskasernen in general and 'Meyer's Hof' in specific. Amsterdam's former shipyard area NDSM on the Northern shore of the Ij is the chosen site for the project. However the building complex is designed with the intention to generate a prototypical solution to Amsterdam's housing shortage. The ambition is to address the problem by means of large scale residential buildings based on the notion that there is plenty of room for densification within the city’s boundaries. Hence the project represents a counter-initiative to the Dutch suburbia-supporting VINEX strategy.ExploreLabArchitectureArchitectur
- …
