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Упит dcterms_creator_txt:Wong How Kin

276 items

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... specify what objects can do. First the objects and methods for the knowledge base were constructed. Then systems were also constructed that specify how objects should behave, and that can reason about the objects by using rules. Each rule specifies a set of conditions and a set of conclusions to ...
    ... to be made if the conditions are true. The conclusions may represent logical deductions about the knowledge base or specifications of how it changes over time. Each rule is a relatively independent module, which made it possible to build the reasoning systems gradually, rule by rule. ...

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Saša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac (2013)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... waiting times between the consequtive avalanches in the RFIM signals at T = 0. We do this by analysing the data from numerical simulations and show how the appearance of the correlations can be attributed to the thresholding pro- cess we used to de�ne the avalanches from the signal28–30. In the absence ...
    ... of waiting times between the consequtive avalanches in the RFIM signals at T=0. We do this by analysing the data from numerical simulations and show how the appearance of the correlations can be attributed to the thresholding pro- cess we used to define the avalanches from the signal?*°°. In the absence ...
    ... curve when presented against Vthr, where the reduced disorder r = (R − Rc)/R measures a distance to the critical disorder Rc of the model. Inset shows how γS T/ (0) (i.e. the exponent γS/T taken for Vth = 0) depends on the reduced disorder r. www.nature.com/scientificreports/ a b -6 7 Vat ~~ Vi. =20 ...

  • Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides

    Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)
    Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis
    ... lower plate in obduction systems. How can we trace the record of tectonic burial in the underthrust continental margin? How can we distinguish between the geological record of underthrusting: below the ophiolite and a fol- lowing continental collision phase? How does deformation propagate from ...
    ... Sociedad Espanola Mineralogia (pp. 53—64). Agard, P., Zuo, X., Funiciello, F., Bellahsen, N., Faccenna, C., & Savva, D. (2014). Obduction: why, how and where. Clues from analog models. Karth and Planetary Science Letters, 393, 132—145. Andrić, N., Sant, K., Matenco, L., Mandic, O., Tomljenović ...
    ... Serbia), in Proceedings EGU General Assembly Conference Abstracts2014, Volume 16, p. 46. Mladenović, A., Trivić, B., and Cvetković, V., 2015, How tectonics controlled post-collisional magmatism within the Dinarides: Inferences based on study of tectono-magmatic events in the Kopaonik Mts ...

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Part of Speech Tagging for Serbian language using Natural Language Toolkit

    Ranka Stanković, Boro Milovanović (2020)
    Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...
    obrada prirodnog jezika, mašinsko učenje, neuronske mreže
    ... be stored is configurable. Figure 2 shows how accuracy of the model measured on the whole dataset improves with the number of the stored tags. It is also seen that the best accuracy is achieved when the tags are remembered for all the words. This is how Unigram tagger behaves. It stores the most ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... classification. How- ever, the necessary regulations and rulebooks have not been prepared yet. Serbia is, therefore, one of several Central and Eastern European countries where a derivation of the older, non-CRIRSCO-aligned Soviet state system is used. There is always a question about how to compare the ...
    ... the exploration results in such cases and there were Resources 2021, 10, 63 12 of 18 several proposals about how to do this directly, or “automatically” [65–67]. The compari- son between Serbian reserves according to the still valid legislation and the CRIRSCO based reporting system is presented ...
    ... between the Serbian equivalent of meas- ured resources and proven/probable CRIRSCO reserves is that in Serbia there are no strict rules regarding how exploitation reserves are calculated. In cases of IMR exploitation re- serves are mostly balanced reserves minus losses during exploitation and, occasionally ...

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion
    ... produce a list of MWU forms in a systematic way, it is necessary to decide what the lemma of all these forms is, what are its additional features, how do its simple word constituents inflect, and what is the inflectional behavior of a MWU as a whole. One can imagine that for some languages this complex ...
    ... too demanding to be done manually because for each MWU one has to provide the following information: 1) What is the lemma? petokraka zvezda. 2) How does this MWU inflect and which inflectional trans- ducer should be used for it? N AXNr. 3) Which MWU constituents inflect? petokraka and zvezda. ...

  • Old or New, We Repair, Adjust and Alter (Texts)

    Cvetana Krstev, Ranka Stanković (2020)
    U ovom radu predstavljamo kako se e-rečnici i kaskade transduktora konačnih stanja implementirani u alatu Unitex mogu koristiti za rešavanje tri problema transformacije teksta: ispravljanje tekstova nakon OCR-a, vraćanje dijakritičkih znakova i prebacivanje između različitih jezičkih varijanti.
    ispravka teksta, OCR greške, restauracija dijakritika , jezičke varijante, elektronski rečnik, transduktori konačnih stanja
    ... Old or new, we repair, adjust and alter (texts) UDC 811.163.41’322.2: 004.9 DOI 10.18485/infotheca.2019.19.2.3 ABSTRACT: In this paper we present how e-dictionaries and cascades of finite-state transducers, as implemented in Unitex, can be used to solve three text transformation prob- lems: correction ...
    ... texts from the point of view of the information theory in order to calculate the redundancy in English texts. The problem discussed at that time was how many characters can be omitted while still allowing text reconstruction by humans. Following this line of research the first practical solutions to ...

  • Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking

    Ranka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović (2024)
    U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...
    paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, Vikipodaci

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... describe how we have tackled this problem1. In the next section we give a brief outline of terminological resources in general and RudOnto in particular. Section 3 offers an overview of state of the art of Moodle implementation and blended learning at FMG. In Section 4 we describe how RudOnto ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... also delivered to students via Moodle. Finally, at the end of the semester, students are given individual projects to prepare, which best show how well a student has mastered the practical part of the course. Various reports at course level enable teachers to gain insight into student activity ...
    ... students enrolled in different courses with similar topics resulted in a combination of course materials within a “meta-course” in Moodle. This is how the Moodle InfoTeh course was created encompassing course material for several postgraduate courses: Databases, Intelligent decision support systems ...

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... lexical. In the following sections we will briefly present these resources, what methodological framework was used for their development, and how they were integrated for their successful usage. 2.1 Textual Resources – Aligned Texts The aligned texts as a special form of multilingual corpora ...
    ... are adapted to proper names. Here, user can choose to expand his query both on the conceptual and the linguistic level. It can be seen in Figure 9 how a query launched with a pivot Paris is linguistically expanded in two languages. The morphological expansion can be chosen here as well and it ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... characterized by indefinitely, multiplicity, subjectivity, mutual overlap. On the other hand, the challenge is how to take into consideration operators’ opinions and judgments, and how to get a relevant resultant. In literature, such problems are usually solved using fuzzy sets theory [3,7]. III ...

  • Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction

    Velislava Stoykova, Ranka Stanković (2018)

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... results or, more accurately, those with the absence of linear anomalies were observed when using the parallel method of acquisition, regardless of how the traverses were oriented compared to the magnetic meridian. This type of acquisition, except for clipping the peak of the gradient of the Earth’s ...
    ... n has been made in the walking mode (McCullough 2007, Burks 2014). In order to reach a proper conclusion as to what causes linear anomalies and how to avoid them, an investigative polygon with dimensions of 25 x 25 m was formed above the previously identifi ed archaeological anomalies at the ...

  • Debris-flow Susceptibility Assessment in Flow-R: Ribnica River Case Study

    Ksenija Micić, Miloš Marjanović, Biljana Abolmasov (2024)
    Debris flows are among the most dangerous erosional geohazards due to the fast rate of movement and long runout zones. Even though the initiation can be triggered in mountainous areas, inhabited and with steep slopes, their propagation and deposition can endanger not only buildings and infrastructure in the urbanized areas, but also threaten human lives. As these initiation areas usually represent unattainable terrains with rapid vegetation cover development, field observations and aerial photo analysis become high-demanding tasks. Consequently, medium-to-regional ...
    tečenje drobine, Flow-R, procena podložnosti, empirijski model

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... hydropower plant (HPP) systems, traversing diverse rock masses, pose challenges for long-term operation. The study's main goal was to investigate how hydraulic transients originating from the headrace tunnel transfer through the concrete lining and manifest in surrounding aquifer systems. In this ...