306,012 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
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
Fagotipos de Salmonella Hadar isolados de diferentes fontes da cadeia alimentar no Brasil
No full textFundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Laboratório de Referência Nacional de Cólera e Enteroinfecções Bacterianas. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Laboratório de Referência Nacional de Cólera e Enteroinfecções Bacterianas. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Laboratório de Referência Nacional de Cólera e Enteroinfecções Bacterianas. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Laboratório de Referência Nacional de Cólera e Enteroinfecções Bacterianas. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Laboratório de Referência Nacional de Cólera e Enteroinfecções Bacterianas. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Laboratório de Referência Nacional de Cólera e Enteroinfecções Bacterianas. Rio de Janeiro, RJ, Brasil.A incidência de gastrenterite causada por Salmonella Hadar tem aumentado ao longo dos anos em todo o mundo. O uso indiscriminado de antimicrobianos na clínica humana e veterinária tem contribuído para o aumento da multiresistência deste sorovar. No presente estudo, 179 cepas de S. Hadar isoladas de diferentes fontes da cadeia alimentar no Brasil foram fagotipadas e analisadas quanto ao perfil de resistência antimicrobiana. Os principais fagotipos de S. Hadar isolados foram PT 38, PT 39, PT 40, PT 11, PT 34, PT 1 e PT 22. Outros fagotipos como PT 13, PT 19, PT 21, PT 23, PT 31, PT 33 e PT 37 foram obtidos em menores percentagens. Um total de 35,7% das cepas avaliadas foi resistente a dois ou mais antimicrobianos. Por outro lado, não foi observada resistência a cefalosporinas de terceira geração ou ciprofloxacina. Esses resultados apontam para a circulação de fagotipos de S. Hadar entre animais, alimentos e seres humanos, bem como o aumento da multiresistência antimicrobiana. O monitoramento de cepas de S. Hadar baseado na fagotipagem e no padrão de resistência aos antimicrobianos são ferramentas úteis na detecção de surtos, identificação das fontes de infecção, além de auxiliar na implantação de programas de controle e prevenção de salmoneloses.The gastroenteritis incidence caused by Salmonella Hadar has increased over the last decades worldwide. The uncontrolled use of antimicrobials for treating human patients and veterinary field contributes to increase the multidrug resistance of this serovar. In the present investigation, a total of 179 S. Hadar isolates from different sources of foodchain in Brazil were phage typed and analyzed for their antimicrobial resistance profile. The main S. Hadar phage types isolated were PT 38, PT 39, PT 40, PT 11, PT 34, PT 1 and PT 22. Others phage types as PT 13, PT 19, PT 21, PT 23, PT 31, PT 33 and PT 37 were obtained in low percentages. A total of 35,7% S. Hadar strains were resistant to two or more antimicrobials drugs. Furthermore, no resistance to third generation cephalosporin or ciprofloxacin was identified in these strains. Those results appoint to S. Hadar phage types circulating among animals, food and humans, as well as the increasing of multidrug resistance. The surveillance and monitoring of S. Hadar strains based on phage typing and antimicrobial resistance profile are useful for detecting outbreaks, identifying sources of infection and implementing prevention and control measures of salmonellosis
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
Prospects for detection rate of very-high-energy {\gamma}-ray emissions from short {\gamma}-ray bursts with the HADAR experiment
No full textThe observation of short gamma ray bursts (SGRBs) in the TeV energy range
plays an important role in understanding the radiation mechanism and probing
new areas of physics such as Lorentz invariance violation. However, no SGRB has
been observed in this energy range due to the short duration of SGRBs and the
weakness of current experiments. New experiments with new technology are
required to detect sub-TeV SGRBs. In this work, we observe the very high energy
(VHE) -ray emissions from SGRBs and calculate the annual detection rate
with the High Altitude Detection of Astronomical Radiation HADAR (HADAR)
experiment. First, a set of pseudo-SGRB samples is generated and checked using
the observations of Fermi-GBM, Fermi-LAT, and SWIFT measurements. The annual
detection rate is calculated from these SGRB samples based on the performance
of the HADAR instrument. As a result, the HADAR experiment can detect 0.5 SGRB
per year if the spectral break-off of -rays caused by the internal
absorption is larger than 100 GeV. For a GRB09010-like GRB in HADAR's view, it
should be possible to detect approximately 2000 photons considering the
internal absorption. With a time delay assumption due to the Lorentz invariance
violation effects, a simulated light curve of GRB090510 has evident energy
dependence. We hope that the HADAR experiment can perform the SGRB observations
and test our calculations in the future
Dakwah Digital Habib Husein Ja’far Al Hadar
No full textMakalah ini membahas tentang bagaimana pemanfaatan new media (media baru) sebagai sarana untuk berdakwah. Ketika zaman semakin maju dan teknologi semakin canggih tantangan seoranga da’i adalah memikirkan cara bagaimana ajaran agama yang ingin dibagikan bisa diakses oleh orang banyak. Maka penulis tertarik untuk meneliti tentang dakwah digital Habib Husein Ja’far Al Hadar, warga Indonesia keturunan Arab disela-sela kesibukan sebagai penulis membuat kanal youtube Jeda Nulis sebagai wadah dan alat untuk digunakan menyebarkan ajaran agama islam. Menghadirkan teman berdiskusi dari berbagai kalangan dan latar belakang yang berbeda. Penulis menemukan beberapa poin penting apa yang sudah disampaikan Habib Husein Ja’far Al Hadar selama setahun terakhir. Pertama, islam adalah agama untuk menyampaikan kabar gembira dan islam adalah agama cinta. Kedua, islam mengajarkan umatnya untuk bertoleransi kepada sesama manusia. Ketiga, menyampaikan kebenaran dengan akhlak yang baik. Keempat, jihad dimulai dari hal sederhana.Kata kunci: Dakwah Digital, Habib Husein Ja’far Al Hada
Inferring Symbolic Automata
No full textWe study the learnability of symbolic finite state automata (SFA), a model
shown useful in many applications in software verification. The
state-of-the-art literature on this topic follows the query learning paradigm,
and so far all obtained results are positive. We provide a necessary condition
for efficient learnability of SFAs in this paradigm, from which we obtain the
first negative result. The main focus of our work lies in the learnability of
SFAs under the paradigm of identification in the limit using polynomial time
and data, and its strengthening efficient identifiability, which are concerned
with the existence of a systematic set of characteristic samples from which a
learner can correctly infer the target language. We provide a necessary
condition for identification of SFAs in the limit using polynomial time and
data, and a sufficient condition for efficient learnability of SFAs. From these
conditions we derive a positive and a negative result. The performance of a
learning algorithm is typically bounded as a function of the size of the
representation of the target language. Since SFAs, in general, do not have a
canonical form, and there are trade-offs between the complexity of the
predicates on the transitions and the number of transitions, we start by
defining size measures for SFAs. We revisit the complexity of procedures on
SFAs and analyze them according to these measures, paying attention to the
special forms of SFAs: normalized SFAs and neat SFAs, as well as to SFAs over a
monotonic effective Boolean algebra. This is an extended version of the paper
with the same title published in CSL'22.Comment: arXiv admin note: text overlap with arXiv:2011.0538
ANALISIS KESALAHAN DALAM MENYELESAIKAN SOAL PEMAHAMAN KONSEP MATEMATIKA BERDASARKAN KRITERIA HADAR DITINJAU DARI KEMAMPUAN AWAL
No full textPenelitian ini bertujuan untuk mendeskripsikan kesalahan siswa dalam menyelesaikan soal pemahaman konsep matematika berdasarkan kriteria hadar ditinjau dari kemampuan awal matematis siswa. Jenis penelitian ini adalah penelitian deskriptif kualitatif. Subjek penelitian ini adalah 6 orang siswa kelas X AKT 3 SMKN 1 Pulau Punjung. Instrumen yang digunakan adalah tes kemampuan awal yang memuat 5 butir soal uraian, tes kemampuan pemahaman konsep yang memuat 5 butir soal uraian, pedoman wawancara dan dokumentasi. Kesalahan yang dianalisis dikategorikan dengan menggunakan kategori kesalahan Hadar yang terdiri dari 6. Hasil penelitian yang didapatkan dari tes kemampuan pemahaman konsep yang berdasarkan kriteria kesalahan Hadar menunjukkan bahwa terdapat kesalahan yang muncul yaitu kesalahan menggunakan data, kesalahan menggunakan logika untuk menarik kesimpulan, penyelesaian tidak diperiksa kembali dan kesalahan teknis. Diantara kesalahan yang timbul, Subjek cenderung melakukan kesalahan menggunakan logika untuk menarik kesimpulan (Logically invalid inference)
Recommended from our members
An analysis of hominin fossil preservation at Hadar, Ethiopia using Uberon ontology
No full textThe integration of data from multiple fossil sites and projects is essential for gaining a broader understanding of human evolution, though, there is no commonly available catalog of all fossil specimens. This paper presents a standardized encoding system for anatomical element preservation using a modified version of the Uberon multispecies anatomy ontology. Ontologies are widely used tools in information science to represent knowledge in specific domains (e.g. anatomy). Uberon documents all vertebrate anatomical elements and provides a comprehensive atlas of relational anatomical parts that I extended to include annotations for completeness. For the analysis, I constructed a database of published Hadar hominin fossils through the Origins project on the Paleo Core data integration platform. I encoded 807 unique skeletal elements of 522 published fossils with an Uberon ID for the most specific skeletal element representing the fossil. Mandibles were the most abundant element in the assemblage (n = 64) and dental elements at Hadar are significantly overrepresented compared to expected values. Using a resampling protocol programmed in R, I found that the abundance of Hadar fossil elements from five anatomical regions was significantly different (p < 0.0001) than expected if randomly sampled from a complete human skeleton. The highest percentage of complete elements was recorded in the dental region (86%) and the lowest in the axial (12%). Uberon allows for the creation of a fossil encoding system that accounts for individual skeletal element preservation for use in hominin preservation analyses.Anthropolog
- …
