Recognition and normalization of temporal expressions in Serbian medical narratives

The temporal dimension emerges as one of the essential concepts in the field of medicine, providing a basis for the proper interpretation and understanding of medically relevant information, often recorded only in unstructured texts. Automatic processing of temporal expressions involves their identification and formalization in a language understandable to computers. This paper aims to apply the existing system for automatic processing of temporal expressions in Serbian natural language texts to medical narrative texts, to evaluate the system’s efficiency in recognition and normalization of temporal expressions and to determine the degree of necessary adaptation according to the characteristics and requirements of the medical domain

Najcitiraniji radovi istraživača srpskih stomatoloških institucija (1996-2018)

Introduction Citation analysis, as one of the best-known bibliometric approaches, is widely used in the evaluation of research output and assessment of research performance and impact. The purpose of this study was to identify the top cited articles published by researchers affiliated to Serbian dental institutions and to analyze their characteristics in order to describe cooperation at individual and institutional, as well as at national and international level. Material and Methods Articles that cited the most 2018 publication in the Web of Science were assessed. The analyzed aspects covered distribution of annual production, annual citations, journals, categories, countries, institutions, authors, research focuses and trends by author keywords and KeyWords Plus. Results the top cited papers were published in 60 journals from 1997 to 2016, with the mean number of 45.08 citations per article. These papers were co-authored by 449 authors, responsible for 726 authorships, affiliated to 149 institutions from 41 countries. Among the overall number of authors, 238 were from Serbia, while 211 were affiliated with international institutions. The most productive institutions were the University of Belgrade and Military Medical Academy from Serbia, whilst the international contributing institutions were primarily from the USA, England, and Italy. Conclusion the present study presented useful insight into the most influential Serbian dental institutions research, revealing the most productive actors and multidisciplinary nature of the research contribution.Uvod Citatna analiza, kao jedan od najpoznatijih bibliometrijskih pristupa, u velikoj meri se koristi prilikom procene naučnih rezultata, postignutog istraživačkog učinka I uticaja. Cilj ovoga rada bio je identifikacija najcitiranijih članaka koje su objavili istraživači povezani sa srpskim stomatološkim institutcijama, kao I analiza njihovih odlika, radi opisa ostvarene saradnje, kako na individualnom I institucionalnom, tako I na nacionalnom I internacionalnom nivou. Materijal I metode Članci sa najvećim brojem citata dobijenih u okviru baze Web of Science od datuma publikovanja do 2018. godine bili su predmet procene. Aspekti koji su analizirani obuhvatali su podatke o broju objavljenih članaka na godišnjem nivou, broju dobijenih citata u toku godine, časopisima, predmetnim kategorijama, zemljama, institucijama, autorima, ali I centralnim temama I trendovima u istraživanjima, posmatranim na osnovu ključnih reči koje je autor dodelio članku, ali I dodatnih ključnih reči, generisanih u okviru korišćene baze Web of Science (KeyWords Plus). Rezultati Posmatrana grupa najcitiranijih radova objavljena je u okviru 60 različitih časopisa, u periodu od 1997. do 2016. godine, uz 45,08 prosečan broj citata po radu. U izradi ovih članaka učestvovalo je ukupno 449 autora, odgovornih za 726 autorstava I povezanih sa 149 institucija iz 41 zemlje. Od ukupnog broja autora, 238 je iz Srbije, dok je 211 autora vezano za strane institucije. Najproduktivnije ustanove iz Srbije bile su Univerzitet u Beogradu I Vojnomedicinska akademija, dok su strane institucije koje su učestvovale u izradi radova prevashodno dolazile iz SAD-a, Engleske I Italije. Zaključak Ova studija pruža koristan uvid u to koja su istraživanja srpskih stomatoloških ustanova izvršila najveći uticaj, otkrivajući I najproduktivnije aktere I multidisciplinarnu prirodu naučnog doprinosa

Tekstometrijske metode i TXM platforma za analizu i vizuelnu prezentaciju korpusa

Textometric approach has long been applied as a useful method for corpus analysis in various fields of humanities and social sciences. Textometry allows the non-linear quantitative and qualitative study of digital corpora, combining lexicometric and statistical research with developed corpus technologies. In this paper, the current version of the srpELTeC corpus was analyzed within the TXM program environment to illustrate the possibilities of the textometric approach and visual presentation of the obtained results.Tekstometrijski pristup se već dugo primenjuje kao korisna metoda za analizu korpusa u različitim oblastima društveno-humanističkih nauka. Kombinu]ući leksikometri]ska i statistička istraživanja sa razvi]enim korpusnim tehnologijama, tekstometri]a omogućava nelinearno kvantitativno i kvalitativno proučavanje digitalnih korpusa. U ovom radu je s ciljem ilustrovanja mogućnosti tekstometrijskog pristupa u okviru TXM programskog okruženja izvršena analiza tekuće verzije srpELTeC korpusa, uz predstavljanje mogućnosti vizuelnog prikaza dobijenih rezultat

Bibliometrijska analiza radova objavljenih u Stomatološkom glasniku Srbije u periodu 2002-2009. godine

Introduction. Serbian Dental Journal (SDJ) is a major source of formal communication for dentists in this region. The purpose of this bibliometric study was to examine articles published in SDJ in period 2002-2009, in reference to journal productivity and nature of authorships, citation patterns, most frequently cited scientific journals and the role of self-citations. Material and Methods. Bibliographic data, as well as metadata for all articles were taken from the Serbian national citation index SCIndeks. Bibliometric analysis of source articles included the number and type of article, author characteristics and cited literature. For each citation the following data was recorded: author(s), article title, journal title, monographic title, publication type, publication year and language. Results. In this period 193 articles were published and most of them were original research articles. In this period a total of 314 national and international authors cooperated, responsible for 538 authorships. The mean number of authors per article was 2.8. Most cited items in terms of publication type were journal articles (83.5 %), while the most frequently cited journals were just those most relevant in the field of dentistry. Results also indicate that the age of the cited literature is below the norm for medical literature. Conclusion. Obtained numerical indicators do not differ significantly when compared to other scientific and professional journals. However, it can be concluded that it is necessary to increase journal productivity and self-citation rate, as well as citation of current literature, up to five years old. This analysis allows evaluating patterns of scientific communication among dentists in this region, as well as journal's current management strategies in order to define useful future directions for the inclusion into the international system of scientific information exchange.Uvod. Časopis Stomatološki glasnik Srbije (SGS) je glavni izvor formalne komunikacije stomatologa s ovih prostora. Cilj ovog rada je bio da se primenom bibliometrijskih pokazatelja provere osobenosti radova objavljenih u SGS, produktivnost časopisa, priroda autorstava, obrasci citiranja, najčešće citirani naučni časopisi i uloga autocitata u periodu 2002-2009. godine. Metode rada. Podaci o objavljenim radovima i metapodaci preuzeti su iz Srpskog citatnog indeksa (SCIndeks). Bibliometrijska analiza izvornih članaka uključila je broj i tip objavljenih radova, podatke o autorima i citiranu literaturu. Za svaki citat zabeleženi su sledeći podaci: autor(i), naslov rada, časopisa i monografske publikacije, tip dokumenta, godina objavljivanja i jezik. Rezultati. U posmatranom periodu u SGS su objavljena 193 članka, od kojih većinu čine originalni naučni radovi. Kooperiralo je ukupno 314 autora iz zemlje i inostranstva, odgovornih za 538 autorstava. Prosečan broj autora po radu bio je 2,8. Najčešće citirani tip literature su članci iz časopisa (83,5%), dok su najčešće citirani naučni časopisi upravo oni najcenjeniji na polju stomatologije uopšte. Podaci o starosti citirane literature ukazuju na citiranje koje je nešto ispod norme za medicinsku literaturu. Zaključak. Dobijeni podaci se ne razlikuju značajno od numeričkih pokazatelja za druge naučne i stručne časopise. Ipak se može zaključiti da je neophodno povećati produktivnost i autocitiranost časopisa, kao i korišćenje aktuelne literature stare do pet godina. Ova analiza omogućava valorizaciju naučne komunikacije stomatologa s ovih prostora, ali i evaluaciju aktuelne strategije vođenja ovoga časopisa, kako bi se definisale korisne smernice za uključivanje u međunarodni sistem razmene naučnih informacija

Leading dental journals availability through academic network of Serbia

In the last century a great progress was noted in all scientific disciplines. With the increasing number of scientific research, researchers and investment, the number of publications has grown exponentially. Besides, the development of information technologies and the emergence of the Internet, communication between scientists as well as the traditional roles assigned to the institutions responsible for information processing and provision has been changed. Due to the rapidly increasing subscription rates, libraries, although the primary participants in the scholarly communication process, lose their ability to meet user information needs. In order to overcome commercialization of scholarly publishing, libraries intensify use of different electronic resources, coordinate acquisition policy and form consortia. In November 2001, leading research libraries in Serbia launched an initiative to form the Consortium for Coordinated Acquisition of Serbian Libraries (KoBSON). Subscribed services, funded by the Ministry of Science and Technological Development of Serbia, currently include over 35,000 scientific journals, about 40,000 books and several citation databases. In the field of Dentistry, Oral Surgery and Medicine, 73.4% of total number of the most relevant dental journals is available in electronic form to Serbian academic community. This article presents a comprehensive overview of basic information about available journals: impact factor, productivity, publication continuity and frequency, language, services that they are available through, size of archives and existing formats. At present Serbian academic institutions have access to more than two thirds of the world’s most relevant dental journals, which justifies the Consortium founders’ initial idea of wide accessibility of scientific information and requires greater involvement of librarians in introducing available services to researchers in order to ensure their full utilization

Automatic recognition and normalization of temporal expressions in Serbian unstructured newspaper and medical texts

Ljudi u svakodnevnom životu koriste vreme kao univerzalni referentni sistem, u okviru koga se doga¯daji ili stanja nižu jedan za drugim, utvr¯duje dužina njihovog trajanja i navodi kada se neki doga¯daj desio. Znaˇcenje vremena i naˇcin na koji ˇcovek poima vreme ogledaju se i u komunikaciji, pre svega, u jeziˇckim izrazima koji se uˇcestalo koriste u svakodnevnom govoru. Vremenski izrazi, kao fraze prirodnog jezika koje na direktan naˇcin ukazuju na vreme, pružaju informaciju o tome kada se nešto dogodilo, koliko dugo je trajalo ili koliko ˇcesto se dešava. Uporedo s razvojem informatiˇckog društva, pove´cava se i koliˇcina slobodno dostupnih digitalnih informacija, što daje ve´ce mogu´cnosti pronalaženja potrebnih informacija, ali i utiˇce na složenost ovog procesa, iziskuju´ci koriš´cenje naprednih raˇcunarskih alata i mo´cnijih metoda automatske obrade tekstova prirodnih jezika. S obzirom na to da se znaˇcenje ve´cine elektronskih informacija menja u zavisnosti od vremena iskazanog u njima, radi uspešnog razumevanja tekstova pisanih prirodnim jezikom, neophodno je koriš´cenje alata koji su sposobni da automatski oznaˇce i informacije koje referišu na vreme i omogu´ce uspostavljanje hronološkog sleda opisanih doga¯daja. Stoga je potrebno razviti alate namenjene ekstrakciji vremenskih izraza, kod kojih su preciznost i odziv na visokom nivou i koji se brzo i jednostavno mogu prilagoditi novim zahtevima ili tekstovima drugog domena. Postojanje ovakvog sistema može u velikoj meri uticati na poboljšanje uˇcinka primene mnogih drugih aplikacija iz oblasti jeziˇckih tehnologija (ekstrakcija informacija, pronalaženje informacija, odgovaranje na pitanja, rezimiranje teksta itd.), ali i doprineti oˇcuvanju srpskog jezika u savremenom digitalnom okruženju...People in everyday life use time as a universal reference system, within which, events or states are sequenced one after the other, it is established how long they lasted and it is stated when an event occurred. The meaning of time and the way humans perceive time is reflected in communication, most of all, in linguistic expressions frequently used in everyday speech. Temporal expressions, as natural language phrases which directly refer to time, provide information on when something happened, how long it lasted and how often it occurs. Alongside with the information society development, the amount of freely available digital information has increased, which provides a greater possibility of finding the necessary information, but also affects the complexity of this process, by requiring the use of advanced computer tools and more powerful natural language text processing methods. Having in mind that the meaning of most electronic information can change depending on time expressed in them, it is essential to use tools which can both automatically mark the information related to time and enable the establishment of chronological order of described events. Therefore, it is necessary to develop tools for extraction of temporal expressions with high levels of precision and recall, which can be easily and quickly adapted to new demands and texts from different domains. The existence of such a system can, to a great extent, affect the effectiveness improvement in implementation of many other applications from the field of language technology (information extraction, information retrieval, question answering, text summarization, etc.), but also contribute to the preservation of the Serbian language in the contemporary digital environment..

Stereotypes of Librarians in the General Public, in Popular Culture and Scientific Literature of the Librarianship

Since the very beginning of the profession, librarianship has been exposed to stereotypical perceptions of positive or negative character. The traditional labeling of a librarian as a spinster has been overcome by modern stereotypes, which are no longer exclusively tied to the female gender. The image of librarians as professionals is, primarily, conditioned by the images that exist in the media and in the public opinion, but also by their own view of the profession. In order to detect the existing attitudes and beliefs about librarians and determine the possible change of the roles of librarians, it would be interesting to examine the images that represent librarians in professional literature, mass media and popular culture

Citatna analiza časopisa 'Stomatološki glasnik Srbije' prema bazama Web of Science, Scopus i Google Scholar

Introduction. For a long time, The Institute for Scientific Information (ISI, now Thomson Scientific, Philadelphia, US) citation databases, available online through the Web of Science (WoS), had an unique position among bibliographic databases. The emergence of new citation databases, such as Scopus and Google Scholar (GS), call in question the dominance of WoS and the accuracy of bibliometric and citation studies exclusively based on WoS data. The aim of this study was to determine whether there were significant differences in the received citation counts for Serbian Dental Journal (SDJ) found in WoS and Scopus databases, or whether GS results differed significantly from those obtained by WoS and Scopus, and whether GS could be an adequate qualitative alternative for commercial databases in the impact assessment of this journal. Material and Methods. The data regarding SDJ citation was collected in September 2010 by searching WoS, Scopus and GS databases. For further analysis, all relevant data of both, cited and citing articles, were imported into Microsoft Access® database. Results. One hundred and fifty-eight cited papers from SDJ and 249 received citations were found in the three analyzed databases. 74% of cited articles were found in GS, 46% in Scopus and 44% in WoS. The greatest number of citations (189) was derived from GS, while only 15% of the citations, were found in all three databases. There was a significant difference in the percentage of unique citations found in the databases. 58% originated from GS, while Scopus and WoS gave 6% and 4% unique citations, respectively. The highest percentage of databases overlap was found between WoS and Scopus (70%), while the overlap between Scopus and GS was 18% only. In case of WoS and GS the overlap was 17%. Most of the SDJ citations came from original scientific articles. Conclusion. WoS, Scopus and GS produce quantitatively and qualitatively different citation counts for SDJ articles. None of the examined databases can provide a comprehensive picture and it is necessary to take into account all three available sources.Uvod. Dugo vremena citatne baze Instituta za naučne informacije u Filadelfiji (ISI; sada Thomson Scientific), dostupne i u elektronskom obliku preko servisa Web of Science (WoS), zauzimale su jedinstvenu poziciju među bibliografskim bazama. Nastanak novih baza i alata koji omogućuju pronalaženje citata, kao što su Scopus i Google Scholar (GS), dovodi u pitanje dominantnost baze WoS i preciznost bibliometrijskih studija zasnovanih isključivo na podacima preuzetim iz ovog izvora. Cilj ovoga rada je bio da se utvrdi da li postoje značajne razlike u broju dobijenih citata časopisa 'Stomatološki glasnik Srbije' (SGS) preko baza WoS i Scopus, odnosno da li se rezultati GS značajno razlikuju od onih dobijenih preko WoS i Scopus i da li GS može biti adekvatna kvalitativna zamena komercijalnim bazama podataka u proceni učinka ovoga časopisa. Materijal i metode rada. Pretraživanjem baza WoS, Scopus i GS prikupljeni su podaci o broju ostvarenih citata za SGS. Svi relevantni podaci, kako citiranih, tako i citirajućih radova, uneti su u Microsoft Access ® bazu podataka i zatim analizirani i upoređivani. Rezultati. U sve tri analizirane baze pronađeno je 158 citiranih radova SGS, kao i 249 primljenih citata. Od ukupnog broja citiranih radova, 74% je citirano na GS, 46% na Scopus, a 44% na WoS. Najveći broj citata (189) potiče iz GS, dok zajednički citati pronađeni u sve tri baze čine samo 15%. Značajna je razlika u procentu jedinstvenih citata među bazama, gde na GS 58% čine jedinstveni citati, a Scopus i WoS imaju 6%, odnosno 4%. Najveće poklapanje u broju i obeležjima pronađenih citata uočeno je između baza WoS i Scopus (70%), zatim između Scopus i GS (18%), pa WoS i GS (17%). Većinu ostvarenih citata SGS (82%) čine originalni naučni radovi. Zaključak. WoS, Scopus i GS daju i kvantitativno i kvalitativno različite podatke o citiranosti SGS. Za prikupljanje kompletnih podataka o citiranosti SGS nijedna od ispitanih baza ne može da pruži sveobuhvatnu sliku, te je neophodno u obzir uzeti sva tri raspoloživa izvora

Production of corn in Serbia in the light of climate change

This paper presents the basic elements of maize production technology in Serbia. For their good knowledge, it is necessary to be familiar with the basic biological requirements of the species, phenology and its particular requirements for water, heat, soil conditions and mineral nutrition. A special emphasis in this paper is given to recent research by the author regarding the correction of production technology (selection of hybrids, time and density of sowing, etc.) from the aspect of knowing the weather conditions of the year to the moment of sowing and the amount and position of available nitrogen in the soil profile during the spring before sowing. In the light of predicted climate change conditions for the Republic of Serbia, the authors of this paper have proposed and appropriated adaptation measures. The general conclusion is that there are no general recipes for the correct production technology of this plant species, but should be adapted to each specific year, field and hybrid

Proizvodni potencijal čeških sorata nevena u uslovima Vojvodine

Investigation was managed on experimental field in Institute of field and vegetable crops, at Rimski Šančevi, Novi Sad, Serbia. In experiment which was established in four repetition, we researched influence of various row spacing (40, 50, 60 and 70 cm) and two Czech varieties: Plamen and Plamen plus on the flowers production and petals yield of potmarigold, and also we determined percentage of petals in totally mass of flowers. In average, variety Plamen was realized higher flowers yield in relation to variety Plamen plus for 1,434 kgha-1. In average for both variety, maximum mass of flowers (6,330 kgha-1) was realized at 40 cm row spacing. Mass of petals at tested variety, in average for all four row spacing was not significantly different. According gained results, we observe decreasing tendency of flowers production and petals yield with increase row spacing.Na oglednom polju Instituta za ratarstvo i povrtarstvo na Rimskim Šančevima želeli smo da ispitamo proizvodni potencijal čeških sorata nevena u našim uslovima. Ispitivan je uticaj različitih međurednih razmaka (40, 50, 60 i 70 cm) na prinos cvasti i jezičastih cvetova kod dve češke sorte: Plamen i Plamen plus. Takođe je utvrđen i procentualni udeo mase jezičastih cvetova (latica) u ukupnoj masi cvasti. Sorta Plamen u proseku je ostvarila za 1434 kgha-1 veći prinos cvasti u odnosu na sortu Plamen Plus. U proseku za obe sorte, najveća masa cvasti (6.330 kgha-1) ostvarena je pri najmanjem međurednom razmaku od 40 cm. Masa latica kod ispitivanih sorti, u proseku za sva četiri međuredna razmaka, nije se statistički značajno razlikovala. Na osnovu dobijenih rezultata, jasno se uočava tendencija opadanja prinosa mase cvasti i latica sa povećanjem rastojanja između redova