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Search Results: 1 - 10 of 21 matches for " Mihaiela Lupea "
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Nonmonotonic Skeptical Consequence Relation in Constrained Default Logic
Mihaiela Lupea
Studia Universitatis Babes-Bolyai : Series Informatica , 2010,
Abstract: This paper presents a study of the nonmonotonic consequence relation which models the skeptical reasoning formalised by constrained default logic. The nonmonotonic skeptical consequence relation is defined using the sequent calculus axiomatic system. We study the formal properties desirable for a good nonmonotonic relation: supraclassicality, cut, cautious monotony, cumulativity, absorption, distribution.
Learning Taxonomy for Text Segmentation by Formal Concept Analysis
Mihaiela Lupea,Doina Tatar,Zsuzsana Marian
Computer Science , 2010,
Abstract: In this paper the problems of deriving a taxonomy from a text and concept-oriented text segmentation are approached. Formal Concept Analysis (FCA) method is applied to solve both of these linguistic problems. The proposed segmentation method offers a conceptual view for text segmentation, using a context-driven clustering of sentences. The Concept-oriented Clustering Segmentation algorithm (COCS) is based on k-means linear clustering of the sentences. Experimental results obtained using COCS algorithm are presented.
A chain dictionary method for Word Sense Disambiguation and applications
Doina Tatar,Gabriela Serban,Andreea Mihis,Mihaiela Lupea,Dana Lupsa,Militon Frentiu
Computer Science , 2008,
Abstract: A large class of unsupervised algorithms for Word Sense Disambiguation (WSD) is that of dictionary-based methods. Various algorithms have as the root Lesk's algorithm, which exploits the sense definitions in the dictionary directly. Our approach uses the lexical base WordNet for a new algorithm originated in Lesk's, namely "chain algorithm for disambiguation of all words", CHAD. We show how translation from a language into another one and also text entailment verification could be accomplished by this disambiguation.
Arava Treatment, between Beneficial Action on Joint Inflammation and Side Effects on Liver, Myocardium and Kidney in Experimental Murine Arthritis  [PDF]
Mihaela Manole, Codruta Badescu, Manuela Ciocoiu, Magda Badescu, Mihaiela Chicu
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.79070
Abstract: The purpose of the experiment was the follow-up in time of the course of joint inflammation phenomena in laboratory animals (white female adult Wistar rats) by determining particular biological, hematological, radiological, osteodensitometric, immunological and anatomic-pathological parameters and by assessing the effects of Leflunomide (Arava) on the course of the disease. ARAVA® (Leflunomide) is a pyrimidine synthesis inhibitor. The experimental study was conducted for 8 weeks. We have also assessed the side effects of the therapy on their liver, myocardium and kidney. Leflunomide therapy improved the course of the clinical and paraclinical parameters, but it did not cure the condition. The positive results in the joints were accompanied by many histological alterations. The experiment revealed the toxic visceral effects of Leflunomide on the liver, heart and kidney.
Aerul ?i Apa : Componente ale Mediului , 2012,
Abstract: The heavy precipitation recorded in the ranges and sub-ranges of the F g ra Mountains between June 1–4, 1988 can be classified as extreme weather events. The purpose of this paper is to analyze the meteorological context in which these phenomena occurred. Classical methods of meteorological analysis were employed: the evolution of key meteorological parameters over the territory of our country, the barometric topographic maps from ground level and altitude, that were taken from the archives of the National Administration of Meteorology, and the GFS model (www.wetter3.de).
Aerul ?i Apa : Componente ale Mediului , 2012,
Abstract: This paper presents the avalanches monitored by the National Meteorological Administration within the nivo-meteorological program since february 2004. Daily observations and weekly snow measurements are made at the weather stations from Bucegi Mountains - Varful Omu (2504 m), Sinaia (1500 m) i Predeal (1100m) and F g ra Mountains – Balea-Lac (2055m), to provide data for avalanche risk estimation using the european avalanche danger scale. Increasing winter sport activities had led to several avalanche accidents, some of them fatal.
Synthesis and characterization of some N-substituted amides of salicylic acid
Lupea Xenia Alfa,Padure Mirabela
Zbornik Matice Srpske za Prirodne Nauke , 2003, DOI: 10.2298/zmspn0304005l
Abstract: The synthesis of some N-substituted aromatic amides in the salicylic acid series was achieved, by direct reaction between primary amines and salicylic acid in inert organic solvent, in the presence of PCl3. The compounds that were obtained, partially not described in literature, were characterized by chemical-physical methods.
Mihaiela Ropot,Ruxandra Barjega,Floreta Constantinescu
Analele Universitatii Bucuresti : Chimie , 2005,
Abstract: Sulfated zirconia and modified sulfated zirconia Zr0.85MeIV0.15O2/SO42- (M = CeIV,SnIV) have been studied as catalysts for skeletal isomerisation of n-butane. The correlationbetween the structure, porosity, the solid-acid character of these samples and their catalyticperformances were reported.
Effect of Casting Parameters on the Microstructural and Mechanical Behavior of Magnesium AZ31-B Alloy Strips Cast on a Single Belt Casting Simulator
Ahmad Changizi,Mamoun Medraj,Mihaiela Isac
Advances in Materials Science and Engineering , 2014, DOI: 10.1155/2014/101872
Abstract: Strips of magnesium alloy AZ31-B were cast on a simulator of a horizontal single belt caster incorporating a moving mold system. Mixtures of CO2 and sulfur hexafluoride (SF6) gases were used as protective atmosphere during melting and casting. The castability of the AZ31-B strips was investigated for a smooth, low carbon steel substrate, and six copper substrates with various textures and roughnesses. Graphite powder was used to coat the substrates. The correlation between strip thickness and heat flux was investigated. It was found that the heat flux from the forming strip to the copper substrate was higher than that to the steel substrate, while coated substrates registered lower heat fluxes than uncoated substrates. The highest heat flux from the strip was recorded for casting on macrotextured copper substrates with 0.15?mm grooves. As the thickness of the strip decreased, the net heat flux decreased. As the heat flux increased, the grain sizes of the strips were reduced, and the SDAS decreased. The mechanical properties were improved when the heat flux increased. The black layers which formed on the strips’ surfaces were analyzed and identified as nanoscale MgO particles. Nano-Scale particles act as light traps and appeared black. 1. Introduction Magnesium is the lightest structural metal in common use [1]. Similarly, supplies of magnesium ores are virtually inexhaustible. Magnesium alloys normally have very good castability and machinability, as well as excellent specific strength and stiffness [2]. However magnesium alloys have some difficulty during rolling due to hexagonal close packed (hcp) lattice structure [3]. Meanwhile, a fine grain structure increases strength and ductility by promoting the operation of nonbasal slip systems and limiting twinning in magnesium alloys [4]. Strip casting of magnesium has become important in recent years. For reducing the cost of thin sheets of magnesium alloys, strip casting technologies such as horizontal single belt casting (HSBC), twin roll casting (TRC), and twin belt casting (TBC) have been developed [3]. With a strip casting process, magnesium alloy strips can typically be produced in thicknesses of 1–10?mm [1]. Direct strip casting, or HSBC, as a near-net-shape casting process, has potential use in the processing of aluminum, copper, zinc, and lead alloys, directly into sheet products. Generally, most metals and alloys are amenable to direct casting into plates, strips, or ribbons. However, a metallurgical understanding of these materials is needed to determine their suitability for casting into
Hrebs and Cohesion Chains as similar tools for semantic text properties research
D. Tatar,M. Lupea,E. Kapetanios
Computer Science , 2014,
Abstract: In this study it is proven that the Hrebs used in Denotation analysis of texts and Cohesion Chains (de?ned as a fusion between Lexical Chains and Coreference Chains) represent similar linguistic tools. This result gives us the possibility to extend to Cohesion Chains (CCs) some important indicators as, for example the Kernel of CCs, the topicality of a CC, text concentration, CC-di?useness and mean di?useness of the text. Let us mention that nowhere in the Lexical Chains or Coreference Chains literature these kinds of indicators are introduced and used since now. Similarly, some applications of CCs in the study of a text (as for example segmentation or summarization of a text) could be realized starting from hrebs. As an illustration of the similarity between Hrebs and CCs a detailed analyze of the poem "Lacul" by Mihai Eminescu is given.
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