3,770 research outputs found
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
Lydia H. Hart Diary
No full textDiary, 1823-1830, 1875 and loose papers 1813, 1831, and undated of Lydia H. Hart of Richmond, Virginia and later Walden, Orange County, New York. The Diary was started by Lydia H. Hart, the wife of Reverend William H. Hart, who was the rector of St. John’s Church in Richmond, VA and later St. Andrews Church in Walden, New York. Diary entries include day-to-day activities and meetings with local neighbors and church patron’s. These neighbors included Elizabeth Van Lew and her parents, which Lydia Hart writes about several times. Most dated entries also include discussion of specific bible verses or Rev. Hart’s sermons. Notable entries include a description of the funeral service for Rev. John Buchanan, former rector of St. John’s Church from 1795 to 1822. Diary entries are chronological and more frequent for 1823 and become less frequent in 1823. In 1828, Lydia Hart moved to New York and eventually to Walden, New York in May 1830.At the end of the diary entries is an entry form another author, possibly by Mary. W. Hart dated 1875. Lydia Hart died in 1831 and could not have made the entry.At the back of the diary and upside down to the diary entries are transcriptions of letters and poems of Lydia Hart’s to various newspapers and and personnel correspondence. Entries include a plea for support to the city of Richmond to take care of its ‘destitute children’, letters to the editor of local newspapers, and poems for the birth of a child or death of a patron.Loose papers include a letter dated Jan 8th 1813, a bequeath request from William H. Hart for the placement of a Tombstone for Lydia Hart, a table of contents for various letters or sermons, a letter from William Hart to a friend from Richmond, and 2 loose undated papers of unknown authorship. The letter from William Hart speaks of the events of Lydia’s death, and inquiries about events taking place in Richmond
The Mammalian Interaural Time Difference Detection Circuit Is Differentially Controlled by GABAB Receptors during Development
No full textThroughout development GABAB receptors (GABABRs) are widely expressed in the mammalian brain. In mature auditory brainstem neurons, GABABRs are involved in the short-term regulation of the strength and dynamics of excitatory and inhibitory inputs, thus modulating sound analysis. During development, GABABRs also contribute to long-term changes in input strength. Using a combination of whole-cell patch-clamp recordings in acute brain slices and immunostainings in gerbils, we characterized developmental changes in GABABR-mediated regulation of synaptic inputs to neurons in the medial superior olive (MSO), an auditory brainstem nucleus that analyzes interaural time differences (ITDs). Here, we show that, before hearing onset, GABABR-mediated depression of transmitter release is much stronger for excitation than inhibition, whereas in mature animals GABABRs mainly control the inhibition. During the same developmental period, GABABR immunoreactivity shifts from the dendritic to the somatic region of the MSO. Furthermore, only before hearing onset (postnatal day 12), stimulation of the fibers originating in the medial and the lateral nucleus of the trapezoid body (MNTB and LNTB) activates GABABRs on both the inhibitory and the excitatory inputs. After hearing onset, GAD65-positive endings devoid of glycine transporter reactivity suggest GABA release from sources other than the MNTB and LNTB. At this age, pharmacological increase of spontaneous synaptic release activates GABABRs only on the inhibitory inputs. This indicates not only a profound inhibitory effect of GABABRs on the major inputs to MSO neurons in neonatal animals but also a direct modulatory role of GABABRs for ITD analysis in the MSO of adult animals
J. H. Hofmeyr Collection index
No full textThis index describes the J. H. Hofmeyr collection and consists of a scrapbook with newspaper clippings made after the
death of Jan Hendrik Hofmeyr in 1909. Jan Hendrik Hofmeyr (1845-1909), also
known as Onze Jan, was a Cape politician. Donated by F.A. Venter, author, in 1977. Made by Miss Bam who lived in the
same boarding house as F.A. venter
sj-docx-1-msj-10.1177_13524585231151212 – Supplemental material for Cognition in patients with neuromyelitis optica spectrum disorders: A prospective multicentre study of 217 patients (CogniNMO-Study)
No full textSupplemental material, sj-docx-1-msj-10.1177_13524585231151212 for Cognition in patients with neuromyelitis optica spectrum disorders: A prospective multicentre study of 217 patients (CogniNMO-Study) by Martin W Hümmert, Carlotta Stern, Friedemann Paul, Ankelien Duchow, Judith Bellmann-Strobl, Ilya Ayzenberg, Carolin Schwake, Ingo Kleiter, Kerstin Hellwig, Sven Jarius, Brigitte Wildemann, Makbule Senel, Achim Berthele, Katrin Giglhuber, Felix Luessi, Matthias Grothe, Luisa Klotz, Rasmus Schülke, Stefan Gingele, Jürgen H Faiss, Annette Walter, Clemens Warnke, Florian Then Bergh, Orhan Aktas, Marius Ringelstein, Jan-Patrick Stellmann, Vivien Häußler, Joachim Havla, Hannah Pellkofer, Tania Kümpfel, Bruno Kopp and Corinna Trebst in Multiple Sclerosis Journal</p
Direct Shaping of Minimum and Maximum Singular Values: An H<sub>-</sub>/H<sub>∞</sub> Synthesis Approach for Fault Detection Filters
No full textThe performance of fault detection filters relies on a high sensitivity to faults and a low sensitivity to disturbances. The aim of this paper is to develop an approach to directly shape these sensitivities, expressed in terms of minimum and maximum singular values. The developed method offers an alternative solution to the H-/H∞ synthesis problem, building upon traditional multiobjective synthesis results. The result is an optimal filter synthesized via iterative convex optimization and the approach is particularly useful for fault diagnosis as illustrated by a numerical example.Team Jan-Willem van Wingerde
Does strict employment protection discourage job creation? Evidence from Croatia
No full textEmployment protection legislation in Croatia is among the most strict in Europe. Firing is difficult and costly, and flexible forms of employment are limited. Is this apparent rigidity reflected-as one would expect based on standard economic theory-in low labor market dynamics? Is job creation low and hiring limited? Is the job security of insiders achieved at the cost of outsiders not being able to enter thelabor market? The author attempts to answer these questions by examining job flows. If the employment protection legislation is binding, then job and worker turnover should be low. He shows that this is indeed the case. Hiring is limited and the average job tenure is very long in Croatia. Job destruction is low, however job creation is still lower. The result is accumulation of unemployment, in large part due to new labor market entrants not being able to find a job. The high degree of job protection also seems to strengthen the bargaining position of insiders and results in relatively high wages. So, wages in Croatia are higher than among its competitors, even after adjusting for productivity. These high labor costs are likely to contribute to limited job creation in existing firms, but also are likely to discourage the entry of-and thus job creation in-new firms. The author presents evidence that firm growth has been indeed limited in Croatia, contributing to the low employment level. The author examines other potential causes of high unemployment in Croatia (the unemployment benefit system, labor taxation, the wage structure, and skill and spatial mismatches). He argues that they do not play a substantial part in accounting for poor labor market outcomes in Croatia. The author concludes that the stringent employment protection legislation is the key labor market institution behind low job creation and high unemployment. Based on this he recommends specific measures aimed at liberalizing the labor market to foster job creation and employment.Labor Management and Relations,Labor Policies,Labor Markets,Environmental Economics&Policies,Trade Finance and Investment,Labor Markets,Labor Management and Relations,Labor Standards,Banks&Banking Reform,Environmental Economics&Policies
Author Co-Citation Analysis (ACA): a powerful tool for representing implicit knowledge of scholar knowledge workers
No full textIn the last decade, knowledge has emerged as one of the most important and valuable organizational assets. Gradually this importance caused to emergence of new discipline entitled ―knowledge management‖. However one of the major challenges of knowledge management is conversion implicit or tacit knowledge to explicit knowledge. Thus Making knowledge visible so that it can be better accessed, discussed, valued or generally managed is a long-standing objective in knowledge management. Accordingly in this paper author co- citation analysis (ACA) will be proposed as an efficient technique of knowledge visualization in academia (Scholar knowledge workers)
Towards a Flexible Author Name Disambiguation Framework
No full textsummary:In this paper we propose a flexible, modular framework for author name disambiguation. Our solution consists of the core which orchestrates the disambiguation process, and replaceable modules performing concrete tasks. The approach is suitable for distributed computing, in particular it maps well to the MapReduce framework. We describe each component in detail and discuss possible alternatives. Finally, we propose procedures for calibration and evaluation of the described system
Jan Neruda's trip to the Middle East (The reality of the tour)
No full textThe study is devoted to the circumstances under which the pilgrimage of Jan Neruda was realised and the reality described in his Pictures from Abroad. The author analyzes the system of the narratological aspects of Neruda's travel causeries and the semantic components of his short stories Various People, directly related to his travel causeries. The analysis of the poetics of Neruda's travel sketches allows us to include them in the genealogy of this genre from H. Heine to Karel Čapek.The study is devoted to the circumstances under which the pilgrimage of Jan Neruda was realised and the reality described in his Pictures from Abroad. The author analyzes the system of the narratological aspects of Neruda's travel causeries and the semantic components of his short stories Various People, directly related to his travel causeries. The analysis of the poetics of Neruda's travel sketches allows us to include them in the genealogy of this genre from H. Heine to Karel Čapek
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