117,398 research outputs found
Armando Spadini
No full textL'attività del pittore Armando Spadini (1883-1925) e i suoi rapporti con Federigo Tozzi
Periodic solutions of semi-explicit differential-algebraic equations with time-dependent constraints
No full textA Wireless and Context-Aware ECG Monitor: An iMote2 Based Portable System
No full textWith the advent of low cost sensors and high performance mobile devices, telemedicine is well on its way to becoming part of our daily lives. While many times we see systems add a singular piece of context to ECG holter data, we believe that additional information can aid in understanding a patients condition, not only by physicians but by computerized algorithms as well. Typically, context of any sort is fundamental for having a holistic view of the user/patient’s complete situation. In that light we have developed a portable monitoring system based around a custom ECG board, an iMote2 (a platform from Intel Research) and a cellular telephone capable of transmitting information over UMTS. The iMote2 has the task of contextualizing the ECG data by adding not only accelerometer data, but ambient information as well. The integration of a subject’s activity from accelerometers and environmental data like temperature, humidity, and light intensity will give a better general picture of where the changes in ECG data come from. The system visualizes the information on a portable windows mobile handheld with the possibility of transmitting the information to a remote server for later use or re-use. The overall result is a system which provides a clean ECG signal implementing an ac-coupled front end with the potential to allow complex classifiers to run on the iMote2 platform
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Online Measurement System for Fault Location in Railways Overhead Lines
No full textFault location in railways overhead lines is still an open problem because the technique actually applied may requires several tens of minutes to reach the goal. The paper proposes an online measurement system for fault location and, thanks to the support of “Rete Ferroviaria Italiana SpA”, the results of tests performed on a real railway
Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?
No full textIn this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Letter from unknown writer to Jesse L. Boyce
No full textLetter to Jesse L. Boyce from unknown author (possibly Jack) about the investigation into the powder magazine located in the Grand Canyon. Some personal news is included in the letter such as the writer's marriage to the daughter of C.A. Taylor, former Supervisor of Cochise County
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
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