1,885 research outputs found
The Strength of a Dream: A Daughter\u27s Portrait of a Northwest Children\u27s Author and Illustrator
No full textAuthor and multi-dimensional artist Skye Burn discusses the life and legacy of her mother, award-winning children\u27s book author and illustrator Doris Burn, and shares anecdotes of her family\u27s life on Waldron Island. Doris (Wernstedt) Burn authored and illustrated the 1965 classic Andrew Henry\u27s Meadow, and wrote or illustrated a range of other well-known children\u27s books. During the second half of the event, Sylvia Tag (Librarian and Curator of the Children’s Interdisciplinary Children’s Literature Collection) facilitates a conversation about Doris Burn’s work
Multi-hop Backscatter Tag-to-Tag Networks
No full textWe characterize the performance of a backscatter tag-to-tag (T2T) multi-hop network. For this, we developed a discrete component-based backscatter T2T transceiver and a communication protocol suite. The protocol composed of a novel (i) flooding-based link control tailored towards backscatter transmission, and (ii) low-power listening MAC. The MAC design is based on the new insight that backscatter reception is more energy costly than transmission. Our experiments show that multi-hopping extends the coverage of backscatter networks by enabling longer backward T2T links (tag far from the exciter sending to the tag close to the exciter). Four hops, for example, extend the communication range by a factor of two. Furthermore, we show that dead spots in multi-hop T2T networks are far less significant than those in the single-hop T2T networks.Embedded System
Electronic markers for geological research: Tag Design
No full textIn this thesis, the implementation of a passive, chipless, frequency coded Radio-Frequency Identification (RFID) tag for bedload transport studies is proposed. The proposed tag will be deployed in the semi-arid Río Colorado river, Bolivia with the aim to develop quantitative sediment transport models that relate transport to grain size. The designed tag is an open-loop resonator with a fragment-loading structure, that has an op- timised configuration based on a Multiobjective Evolutionary Algorithm based on Decomposition combined with Enhanced Genetic Operators (MOEA/D-GO). The designed RFID tag can ideally reach a size of 4 by 4 millimetres with a maximum calculated reading range of 1.3 meters, and operates in the ultra wide band from 3 to 7 gigahertz. Numerous simulations on the tags were run to verify their properties. The tags proved to have a good directivity, quality factor and radio cross section on its resonant frequency. The tags could reach resonance frequencies as low as 2.9 gigahertz and quality factors as high as 130. The proof of concept on a Printed Circuit Board with an FR-4 substrate results in a tag of 6.4 by 3.4 millimetres. Unfortunately, these properties could not yet be verified by measuremenElectrical Engineering | Electronic Instrumentatio
On the Privacy of Two Tag Ownership Transfer Protocols for RFIDs
No full textIn this paper, the privacy of two recent RFID tag ownership transfer protocols are investigated against the tag owners as adversaries. The first protocol called ROTIV is a scheme which provides a privacy-preserving ownership transfer by using an HMACbased authentication with public key encryption. However, our passive attack on this protocol shows that any legitimate owner which has been the owner of a specific tag is able to trace it either in the past or in the future. Tracing the tag is also possible via an active attack for any adversary who is able to tamper the tag and extract its information. The second protocol called, Chen et al.’s protocol, is an ownership transfer protocol for passive RFID tags which conforms EPC Class1 Generation2 standard. Our attack on this protocol shows that the previous owners of a particular tag are able to trace it in future. Furthermore, they are able even to obtain the tag’s secret information at any time in the future which makes them capable of impersonating the tag
Towards tagging and categorization for micro-blogs
No full textPaper presented at the 21st National Conference on Artificial Intelligence and Cognitive Science (AICS 2010), Galway, Ireland, 30 August - 1 September, 2010Abstract. Micro-blogging services are becoming very popular among users who want to share local or global news, their knowledge or their opinions on the real-time web. Lately, users are also using these services to search for information, and some services include tag or category information
to better facilitate search. However, these tags are typically free-form in nature with users permitted to adopt their own conventions without restriction, which can make the set of tags noisy and sparse. A
solution to this problem is to recommend tags (or categories) to users. Our work represents an initial study in the recommendation of categories for short-form messages in order to provide for better search and message filtering. In particular, we describe how such real-time web data can be used as a source of indexing and retrieval information for category recommendation. An evaluation performed on two different micro-blogging datasets indicates that promising performance is achieved by our approach.Science Foundation IrelandConference detailshttp://aics.nuigalway.ie/Not yet published in "Proceedings of the 21st Irish Conference on Artificial Intelligence and Cognitive Science (AICS 2010)" to be (most probably) published by Springer. On publication, 12 months embargo. Condition: provide a link to the published article on Springer’s website, accompanied by the text “The final publication is available at springerlink.com”. Author version can remain as is (no set text)- AV 7/10/2010. ke SB. 11/10/201
Series SRR Loaded UHF RFID Tag
No full textAbstractAn RFID tag based on a series loaded split ring resonator (SRR) to operate in the European UHF RFID band of 865-867MHz is reported. A chip of impedance 27-j212Ω is connected at the terminals of the antenna and the read range measurements of the RFID tag are performed in the UHF RFID band. The proposed UHF tag exhibits appreciably good read range over a wide azimuth and elevation angular ranges
Tag-based Recommender System
No full textOrganizers of STRP Art and Technology Festival want to enhance the festival experience of visitors whilst also learning more about these visitors. The proposed solution is a tag-based recommender system, where the feedback received from visitors will allow STRP to learn more about how visitors perceive art pieces and in turn provide visitors with recommendations of other art pieces to view, at the festival. During the course of this thesis, we first explore how we can learn about the preferences of visitors using the tags they contribute, paired with a rating for the art piece. We do this by investigating a semantic mapping tool, Relco from TU Eindhoven, which enables us to map tags to concepts from a vocabulary, with the help of a lexical ontology such as WordNet. We experiment with the stemming of tags before using them in string matching algorithms. Further, we investigate how influential the vocabulary is onto which we map tags, when using Relco. Finally, we evaluate recommendation algorithms. We explore collaborative, content-based and hybrid forms of recommendations. We conclude that, in this context, content-based recommendation algorithms perform the most accurately and consistently. We also conclude that the semantic extension in a tag-based recommendation algorithm enables us to accurately profile a visitor and art piece with a finite number of concepts.Information ArchitectureSoftware Technology, Web Information SystemsElectrical Engineering, Mathematics and Computer Scienc
Storage tag
No full textA storage tag given to Japanese evacuees from the Wartime Civil Control Administration.The War Relocation Authority (WRA), together with the Wartime Civil Control Administration (WCCA), the Civil Affairs Division (CAD) and the Office of the Commanding General (OFG) of the Western Defense Command (WDC) operated together to segregate and house some 110,000 men women and children from 1942 to 1945. The collection contains documents and photographs relating to the establishment and administrative workings of the (WDC), the (WRA) and the (WCCA) for the year 1942
ItaliaNLP @ TAG-IT: UmBERTo for Author Profiling at TAG-it 2020
No full textIn this paper we describe the systems we used to participate in the task TAG-it of EVALITA 2020. The first system we developed uses linear Support Vector Machine as learning algorithm. The other two systems are based on the pretrained Italian Language Model UmBERTo: one of them has been developed following the Multi-Task Learning approach, while the other following the Single-Task Learning approach. These systems have been evaluated on TAG-it official test sets and ranked first in all the TAG-it subtasks, demonstrating the validity of the approaches we followed
Tag Libraries for XSLT and XQuery
No full textXML has mature tools for validation, transformation, and query, but current tools require a level of programming skills that many users who need dynamic documents do not have. Using the organizational pattern of tag libraries (borrowed from Java tag libraries), we propose to divide responsibilities for dynamic documents between two classes of people. Tag-library developers implement query, transformation, or component formatting for predefined tags in a library; document authors create dynamic documents by embedding elements from the tag library in HTML, XSL-FO, or other documents; when the document is processed, elements from the tag library are replaced by automatically generated content. A callback mechanism allows the document author to pass document fragments to the tag library for parameterization. Document authors can use tag libraries in ways not foreseen by the tag library developers and can combine tag libraries from different developers. A robust tag-library solution will foster better collaboration between XML developers and creators of XML documents. </jats:p
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