12,625 research outputs found
Capillary Microsampling of Mouse Blood in Early Pre-Clinical Studies: A Preferred Alternative to Dried Blood Spot Sampling
No full textDistributed Multi-agent Negotiation for Wi-Fi Channel Assignment
No full textChannel allocation in dense, decentralized Wi-Fi networks is a challenging due to the highly nonlinear solution space and the difficulty to estimate the opponent’s utility model. So far, only centralized or mediated approaches have succeeded in applying negotiation to this setting. We propose the first two fully-distributed negotiation approaches for Wi-Fi channel assignment. Both of them leverage a pre-sampling of the utility space with simulated annealing and a noisy estimation of the Wi-Fi utility function. Regarding negotiation protocols, one of the approaches makes use of the Alternating Offers protocol, while the other uses the novel Multiple Offers Protocol for Multilateral Negotiations with Partial Consensus (MOPaC), which naturally matches the problem peculiarities. We compare the performance of our proposed approaches with the previous mediated approach, based on simple text mediation. Our experiments show that our approaches yield better utility outcomes, better fairness and less information disclosure than the mediated approach.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Interactive Intelligenc
A relation of Swedenborgianism and anthroposophy: The case of the Finnish author Kersti Bergroth and her novel The Living and the Dead
No full textMy article discusses the influence of Emanuel Swedenborg on a Finnish female author, Kersti-Bergroth (1886-1975) through one of Bergroth's novels Eläviä ja kuolleita ('The Living and the Dead', 1945). Bergroth was a prolific author with an anthroposophical bent, and an admirer of German idealism. In this particular novel Bergroth refers explicitly to Swedenborg and the story discloses a number of Sweden-borgian themes: the doctrine of correspondences; a world divided into material, spiritual, and divine realms; and communication with the spirits of the dead. As Bergroth was an active member of the anthroposophical movement, I will also consider the route, spread, and place of Swedenborg's ideas within anthroposophy and theosophy in the twentieth century
Determine activity based on the classified identity of users by using Wi-Fi monitoring
No full textThe Wi-Fi technologies are used in everyday life on numerous applications that detect the crowd information for commercial, security and other reasons. The Wi-Fi monitoring can be used for tracking people when they are moving along different access points. The results from the Wi-Fi monitoring can provide the location of the users in an area and therefore, useful information can be extracted. The goal of this project is to recognize the activity of different users for different sessions of a Wi-Fi network. The Wi- Fi dataset that is used, is acquired from the Wi-Fi network of the Delft University of Technology (TU Delft). Initially, the estimation of the users’ occupation is determined with the use of a Markov model with the information that is derived from the Wi-Fi dataset. Their possible identity is used, in order to estimate the activity that a user is probably doing at a specific location of the research area. The results on the use of the research area, are calculated and visualised in different spatial levels, campus, building and floor level. The use of the building complex of the TU Delft Campus, is examined during irregular hours, to allow efficient real estate management and provide security solutions.Architecture and The Built EnvironmentGeo-information TechnologyGeomatics for the Built EnvironmentTRACK-i
Comparing Mediated and Unmediated Agent-Based Negotiation in Wi-Fi Channel Assignment
No full textChannel allocation in dense Wi-Fi networks is a complex problem due to its nonlinear and exponentially sized solution space. Negotiating over this domain is a challenge, since it is difficult to estimate opponent’s utility. Based on our previous work in mediated techniques, we propose the first two fully-distributed multi-agent negotiations for Wi-Fi channel assignment. Both of them use a simulated annealing sampling process and a noisy model graph estimation. One is designed for Alternating Offers protocols, while the other uses the novel Multiple Offers Protocol for Multilateral Negotiations with Partial Consensus (MOPaC), with experimental promising features for our particular domain. Our experiments compare both proposals against their mediated counterparts, showing similar results on social welfare, Nash product and fairness, but improving privacy and communication overhead.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Interactive Intelligenc
AI, Author and Copyright
No full textCopyright is constantly being challenged by new technologies. For now, copyright has barely kept up with the constant changes. The very core idea of copyright, authorship, is now being tested by Artificial Intelligence and works created by Artificial Intelligence.
My research problems are mainly composed of authorship issues with Artificial Intelligence and issues with copyright ownership over works created by Artificial Intelligence. There are already artificial creators and more so in the future, so these copyright issues must be faced upfront and legislation should and must be adapted for the coming surge of artificial creators.
Currently Artificial Intelligence cannot be a legitimized author or own copyright to a work. This all leads back to legal personhood, which Artificial Intelligence lacks due to current legislation. Artificial Intelligence must be placed somewhere in the equation of copyright for copyright to work properly and to get some legal certainty on these issues
Glocalisation of global market forces and the repositioning of a peripheral Russian mining community
No full textIncreasing globalisation and global market forces shape the development of resource peripheries in the Barents region. Foreign direct investments are concrete example of global market forces. Their glocalisation forces the locals to evaluate their consequences for the local development and reposition their communities in global context. This article studies glocalisation of global market forces and preferred directions of repositioning of a peripheral single-industry mining community in the Russian Barents region. The study is based on a case study of local opinions about actual and potential external actors in the economic development of Kovdor, located in the Murmansk region. The paper analyses the preferred owner of the town-constituting enterprise and the local opinions about the EU, USA and China as potential investors to the case study community. The study reveals how local opinions about external forces in the local development are related to local life-worlds. Moreover, the paper shows the impact that economic, political, cultural, historical and technological factors have in forming these opinions about potential foreign investors. The study shows generally positive local opinions about FDI. However, significant differences were found in opinions about different investing countries.publishedVersio
ViTaLS -A Novel Link-Layer Scheduling Framework for Tactile Internet over Wi-Fi
No full textThe pioneering field of tactile Internet (TI) will enable the transfer of human skills over long distances through haptic feedback. Realizing this demands a roundtrip latency of sub-5 ms. In this work, we investigate the capability of Wi-Fi 6 and existing TI scheduling/multiplexing schemes in meeting this stringent latency constraint. Taking the concrete example of the state-of-the-art video-haptic multiplexer (VH-multiplexer), we highlight the pitfalls of relying on the existing Wi-Fi 6 systems for TI communication. To circumvent this, we propose video-tactile latency scheduler (ViTaLS) - a novel link layer framework for tuning the video-tactile frame transmissions to suit their heterogeneous Quality of Service requirements. We present a mathematical model to characterize the packet transmission duration of ViTaLS. Using a custom simulator, we validate our model and measure the objective performance improvement of ViTaLS over VH-multiplexer. We also present ViTaLS-optimal - a variant of ViTaLS, for further 4 reducing the tactile latency. Objectively, we show that ViTaLS-optimal yields a latency improvement of up to 82 %. Based on experiments conducted on a real TI testbed, we subjectively demonstrate that ViTaLS-optimal outperforms the VH-multiplexer.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Embedded System
Remote Control Car using Wi-Fi
No full textWireless Fidelity, Wi-Fi utilize one of the IEEE 802.11 wireless standards to achieve a
wireless network. In this project, author has to use Wi-Fi in controlling a Wi-Fi car.
The problem statement, objectives and scope of studies for this project will be further
explained in the first part of this report, the INTRODUCTION section. As for the
scope of study, author explores Wi-Fitechnologyitself and the information gained was
documented in LITERATURE REVIEW/THEORY chapter. The proposed
METHODOLOGY used in this project is discussed in the next section, including the
tools and software utilized in developing the system. As this project is meant to
develop author understanding on wireless network, the results of this project are
included in the RESULT AND DISCUSSION section. The last section,
CONCLUSION AND RECOMMENDATION will conclude author activities
throughout these two semesters and describe suggestions to enhance and overcome
flaws of this project. All references of this project can be referred in the
REFERENCES list.
Wi-Fi Direct based Smart Set-up (WDSS) in Lighting Systems
No full textThe Wireless Lighting Control System has drawn intensive attention in the recent years due to the potential for huge cost savings as well as increased convenience. Commonly seen Wireless Lighting Control Systems utilize Zigbee, KNX and Z-WAVE; whereas little attention has been given to Wi-Fi because of unsolved limitations. The purpose of this thesis project was to develop a Wi-Fi Direct based Smart Setup (WDSS) mechanism, in order to make Wi-Fi a proper candidate for the Wireless Lighting Control System. One of the primary limitations of conventional Wi-Fi technology is that the complex setup procedure prevents interface-constrained devices (e.g.lamps) from joining the network. Secondly, the multi-hop Wi-Fi network is not standardized therefore the common Wi-Fi network bears a star topology with only one-hop coverage. The WDSS is an innovative solution, developed on a newly standardized Wi-Fi technology called Wi-Fi Direct, which is being rolled out as standard in Smartphones and other Internet devices. To overcome the first limitation of conventional Wi-Fi technology, WDSS defines a protocol to allow easy commissioning of lamps (and/or other devices) in a Wi-Fi network, adding a major ease of install element to a traditional Wi-Fi based system (without requiring the user interface on lamps). This approach utilizes a third device, namely a commissioning tool, to set up a Wi-Fi Direct link to the lamp, and further instruct the lamp to migrate to an existing Wi-Fi Network in a secured fashion. An additional advantage of the WDSS is that it can also be applied to set up a multi-hop network among lamps. This feature well addresses the second issue, thereby guaranteeing the effective coverage. Unlike many other meshing networks which function in ad-hoc mode, the WDSS multi-hop network is built up in Wi-Fi infrastructure mode, which has been proved to outperform the ad-hoc network in many aspects. The innovation of the WDSS multi-hop network only focuses on the easy setup instead of advanced routing; however, intelligent algorithms and routing methodologies can be compatibly adopted to optimize the traffic flow. As part of this project, a demo has been set up and the WDSS method has been tested on this system. Results showed that the WDSS has significant value in the Wireless Lighting Control System, in terms of easy commissioning, compatibility with standard Wi-Fi infrastructure, applicability on random chipsets, and transparency to the Internet Protocol. The usage of WDSS of course can be easily expanded to other similar applications.WMCTelecommunicationsElectrical Engineering, Mathematics and Computer Scienc
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