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Abstract: Fullerene graphs are cubic, 3-connected, planar graphs with exactly 12 pentagonal faces, while all other faces are hexagons. Fullerene graphs are mathematical models of fullerene molecules, i.e., molecules comprised only by carbon atoms different than graphites and diamonds. We give a survey on fullerene graphs from our perspective, which could be also considered as an introduction to this topic. Different types of fullerene graphs are considered, their symmetries, and construction methods. We give an overview of some graph invariants that can possibly correlate with the fullerene molecule stability, such as: the bipartite edge frustration, the independence number, the saturation number, the number of perfect matchings, etc.
Keywords: fullerene, cubic graph, planar graph, topological indices
Published in RUP: 03.01.2022; Views: 836; Downloads: 17
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Keywords: old age, suicide rates, Italy, macro-areas, sex differences, poverty indices, treshold for seniority
Published in RUP: 02.12.2020; Views: 1381; Downloads: 40
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Abstract: The paper presents ToBI, a transcription method for prosodic annotation. ToBI is an acronym for Tones and Breaks Indices which first denoted an intonation system developed in the 1990s for annotating intonation and prosody in the database of spoken Mainstream American English. The MAE_ToBI transcription originally consists of six parts - the audio recording of the utterance, the fundamental frequency contour and four parallel tiers for the transcription of tone sequence, ortographic transcription, indication of break indices between words and for additional observations. The core of the transcription, i. e. of the phonological analyses of the intonation pattern, is represented by the tone tier where tonal variation is transcribed by using labels for high tone and low tone where a tone can appear as a pitch accent, phrase accentand boundary tone. Due to its simplicity and flexibility, the system soon began to be used for the prosodic annotation of other variants of English and many other languages, as well as in different non-linguistic fields, leading to the creation of many new ToBI systems adapted to individual languages and dialects. The author is the first to use this method for Slovene, more precisely, for the intonational transcription and analysis of the corpus of spontaneous speech of Slovene Istria, in order to investigate if the ToBi system is useful for the annotation of Slovene and its regional variants.
Keywords: discours spontané, intonacija, intonation, Istrie slovene, korpusno jezikoslovje, linguistique de corpus, méthode de transcription ToBI, slovene, slovenska Istra, slovenščina, spontani govor, ToBI, Tones and Breaks Indices, transkripcijska metoda ToBI
Published in RUP: 30.12.2015; Views: 3456; Downloads: 65
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