1,721,081 research outputs found
Thematische und finanzierungstechnische Gemeinsamkeiten des türkischen Journalismus auf Zypern und in der Dobrudscha (1891-1940)
No full textIntegrating pyModeS and OpenSky Historical Database
No full textA large quantity of Mode S data is being gathered by the OpenSky receiver network every day. Information regarding common flight states, such as position, ground speed, and the vertical rate is broadcast by ADS-B and has already been decoded and made available for researchers via the OpenSky historical database. However, there is still a large amount of Mode S communication data that has not yet been fully explored. Specifically, the information contained in Enhanced Mode S Surveillance downlink messages can be utilized to better support ATM research. The challenge of decoding such information lies in the implicit inference process for Mode S Comm-B messages. This paper presents a new open library, pymodes-opensky, which connects the existing open-source pyModeS decoder to the raw Mode S messages from the OpenSky historical database through the Impala shell. It also presents a convenient workflow that can be used to obtain additional information regarding airspeeds, flight intentions, and meteorological conditions of a given flight from the OpenSky database. An analysis based on a global dataset from OpenSky is conducted, and the associated Mode S interrogation statistics in different regions are shown.Control & SimulationControl & Operation
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Dataset for "Sticky Fingers: Resilience of Satellite Fingerprinting against Jamming Attacks"
No full text<p>Labelled dataset of Iridium “ring alert” downlink messages, including message headers captured at 25MS/s, with varying amounts of noise added to the signal. Message metadata includes satellite and transmitter identifier, satellite position, timestamp, and estimated noise level. The dataset contains 540066 messages.</p>
<p>This data was originally collected for the paper “Sticky Fingers: Resilience of Satellite Fingerprinting against Jamming Attacks”, and was used to evaluate the resilience of satellite fingerprinting systems against jamming attacks. The work was based upon the previous paper “Watch This Space: Securing Satellite Communication through Resilient Transmitter Fingerprinting”, and uses the paper's trained models and code, linked in the “Related Works” section.</p>
<p>The data collection and analysis code (including usage instructions for this dataset) can be found at the following URL: <a href="https://github.com/ssloxford/SatIQ-noise">https://github.com/ssloxford/SatIQ-noise</a></p>
<p>The preprint is available on arXiv at the following URL: <a href="https://arxiv.org/abs/2402.05042">https://arxiv.org/abs/2402.05042</a></p>
<p>When using this dataset, please cite the following paper: “Sticky Fingers: Resilience of Satellite Fingerprinting against Jamming Attacks”. The BibTeX entry is given below:</p>
<pre><code>@inproceedings{smailesSticky2024,
author = {Smailes, Joshua and Salkield, Edd and K{\"o}hler, Sebastian and Birnbach, Simon and Strohmeier, Martin and Martinovic, Ivan},
title = {{Sticky Fingers}: {Resilience of Satellite Fingerprinting against Jamming Attacks}},
year = {2024},
booktitle = {Workshop on the Security of Space and Satellite Systems (SpaceSec)},
location = {San Diego, USA},
series = {SpaceSec '24}
}</code></pre>
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