The Past in the Present
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Weakening Processes in the Optimality Framework K.G.Vijayakrishnan1 0
1 Weakening Processes in the Optimality Framework K.G.Vijayakrishnan1 0. Introduction Processes of weakening may be subsumed under two heads namely, the loss of marked feature specifications such as voicing, aspiration, place specification or even the loss of an entire segment, and lenition, exemplifying processes such as voicing, spirantization and sonorization. This paper is an attempt at an analysis of both types of consonantal weakening in the framework of Optimality Theory (henceforth OT). In section 1 we take up the phenomenon of weakening as the loss of feature specification and propose an analysis in terms of prosodic alignment and featural markedness. Section 2 examines lenition in Tamil and proposes a universal constraint ‘Harmonic Sonorancy’ which explains the process as an assimilatory tendency to increase the sonority of consonants in the neighbourhood of sonorants. 1. Weakening as loss of marked feature specification The loss of marked feature specification is the converse of licensing of marked feature specification in prosodically strong positions. Extending the approach to licensing in Smolensky (1995) and Zoll (1998), we show that the distribution of marked feature specification can be accounted for in terms of alignment to prosodic categories. The loss of marked feature specification is widely attested in the following prosodically weak positions. (1) Loss of Marked Feature Specification in Prosodically Weak Positions a) syllable coda well-known examples coda devoicing in German, Dutch, Polish, Catalan lesser known example coda deaspiration in standard colloquial Bangla Standard colloquial Bangla i. lab ~ labher ‘profit ~ genetive’ ii. ghOr‘house’ iii. ciæhi ‘letter’ b) onset of non-head syllables well-known example lack of aspiration of voiceless stops in English lesser known examples lack of aspiration in non-initial stops in the Adilabad dialect of Gondi (Subrahmanian 1968), the Hooghli dialect of Bangla (Ghosh 1995); in both cases aspiration is distinctive in voiceless and voiced stops. -
Species Tree Likelihood Computation Given SNP Data Using Ancestral Configurations
Species Tree Likelihood Computation Given SNP Data Using Ancestral Configurations DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Hang Fan, M.S. Graduate Program in Statistics The Ohio State University 2013 Dissertation Committee: Professor Laura Kubatko, Advisor Professor Bryan Carstens Professor Radu Herbei 1 Copyright by Hang Fan 2013 2 Abstract Inferring species trees given genetic data has been a challenge in the field of phylogenetics because of the high intensity during computation. In the coalescent framework, this dissertation proposes an innovative method of estimating the likelihood of a species tree directly from Single Nucleotide Polymorphism (SNP) data with a certain nucleotide substitution model. This method uses the idea of Ancestral Configurations (Wu, 2011) to avoid the computation burden brought by the enumeration of coalescent histories. Importance sampling is used to in Monte Carlo integration to approximate the expectations in the computation, where the accuracy of the approximation is tested in different tree models. The SNP data is processed beforehand which vastly boosts the efficiency of the method. Gene tree sampling given the species tree under the coalescent model is employed to make the computation feasible for large trees. Further, the branch lengths on the species tree are optimized according to the computed species tree likelihood, which provides the likelihood of the species tree topology given the SNP data. For inference, this likelihood computation method is implemented in the stepwise addition algorithm to infer the maximum likelihood species tree in the tree space given the SNP data, and simulations are conduced to test the performance. -
EVOLUTIONARY INFERENCE: Some Basics of Phylogenetic Analyses
EVOLUTIONARY INFERENCE: Some basics of phylogenetic analyses. Ana Rojas Mendoza CNIO-Madrid-Spain. Alfonso Valencia’s lab. Aims of this talk: • 1.To introduce relevant concepts of evolution to practice phylogenetic inference from molecular data. • 2.To introduce some of the most useful methods and computer programmes to practice phylogenetic inference. • • 3.To show some examples I’ve worked in. SOME BASICS 11--ConceptsConcepts ofof MolecularMolecular EvolutionEvolution • Homology vs Analogy. • Homology vs similarity. • Ortologous vs Paralogous genes. • Species tree vs genes tree. • Molecular clock. • Allele mutation vs allele substitution. • Rates of allele substitution. • Neutral theory of evolution. SOME BASICS Owen’s definition of homology Richard Owen, 1843 • Homologue: the same organ under every variety of form and function (true or essential correspondence). •Analogy: superficial or misleading similarity. SOME BASICS 1.Concepts1.Concepts ofof MolecularMolecular EvolutionEvolution • Homology vs Analogy. • Homology vs similarity. • Ortologous vs Paralogous genes. • Species tree vs genes tree. • Molecular clock. • Allele mutation vs allele substitution. • Rates of allele substitution. • Neutral theory of evolution. SOME BASICS Similarity ≠ Homology • Similarity: mathematical concept . Homology: biological concept Common Ancestry!!! SOME BASICS 1.Concepts1.Concepts ofof MolecularMolecular EvolutionEvolution • Homology vs Analogy. • Homology vs similarity. • Ortologous vs Paralogous genes. • Species tree vs genes tree. • Molecular clock. -
The Probability of Monophyly of a Sample of Gene Lineages on a Species Tree
PAPER The probability of monophyly of a sample of gene COLLOQUIUM lineages on a species tree Rohan S. Mehtaa,1, David Bryantb, and Noah A. Rosenberga aDepartment of Biology, Stanford University, Stanford, CA 94305; and bDepartment of Mathematics and Statistics, University of Otago, Dunedin 9054, New Zealand Edited by John C. Avise, University of California, Irvine, CA, and approved April 18, 2016 (received for review February 5, 2016) Monophyletic groups—groups that consist of all of the descendants loci that are reciprocally monophyletic is informative about the of a most recent common ancestor—arise naturally as a conse- time since species divergence and can assist in representing the quence of descent processes that result in meaningful distinctions level of differentiation between groups (4, 18). between organisms. Aspects of monophyly are therefore central to Many empirical investigations of genealogical phenomena have fields that examine and use genealogical descent. In particular, stud- made use of conceptual and statistical properties of monophyly ies in conservation genetics, phylogeography, population genetics, (19). Comparisons of observed monophyly levels to model pre- species delimitation, and systematics can all make use of mathemat- dictions have been used to provide information about species di- ical predictions under evolutionary models about features of mono- vergence times (20, 21). Model-based monophyly computations phyly. One important calculation, the probability that a set of gene have been used alongside DNA sequence differences between and lineages is monophyletic under a two-species neutral coalescent within proposed clades to argue for the existence of the clades model, has been used in many studies. Here, we extend this calcu- (22), and tests involving reciprocal monophyly have been used to lation for a species tree model that contains arbitrarily many species. -
Detecting Pre-Modern Lexical Influence from South India in Maritime Southeast Asia
Archipel Études interdisciplinaires sur le monde insulindien 89 | 2015 Varia Detecting pre-modern lexical influence from South India in Maritime Southeast Asia Détecter l’influence du lexique pré‑moderne de l’Inde du Sud en Asie du Sud-Est maritime. Tom Hoogervorst Electronic version URL: http://journals.openedition.org/archipel/490 DOI: 10.4000/archipel.490 ISSN: 2104-3655 Publisher Association Archipel Printed version Date of publication: 15 April 2015 Number of pages: 63-93 ISBN: 978-2-910513-72-6 ISSN: 0044-8613 Electronic reference Tom Hoogervorst, “Detecting pre-modern lexical influence from South India in Maritime Southeast Asia”, Archipel [Online], 89 | 2015, Online since 15 June 2017, connection on 05 March 2021. URL: http://journals.openedition.org/archipel/490 ; DOI: https://doi.org/10.4000/archipel.490 Association Archipel EMPRUNTS ET RÉINTERPRÉTATIONS TOM HOOGERVORST1 Detecting pre-modern lexical influence from South India in Maritime Southeast Asia2 Introduction In the mid-19th century, the famous Malacca-born language instructor Abdullah bin Abdul Kadir documented the following account in his autobiography Hikayat Abdullah (Munšī 1849): “[…] my father sent me to a teacher to learn Tamil, an Indian language, because it had been the custom from the time of our forefathers in Malacca for all the children of good and well-to-do families to learn it. It was useful for doing computations and accounts, and for purposes of conversation because at that time Malacca was crowded with Indian merchants. Many were the men who had become rich by trading in Malacca, so much so that the names of Tamil traders had become famous. -
An Assessment of Tamil Phonology Acquisition in Second Language Learning Context
44 International Journal of Assessment and Evaluation in Education Vol 5/Dec 2015 ISSN 2232-1926 An Assessment of Tamil Phonology Acquisition in Second Language Learning Context Kaaminy Kanapathy Universiti Pendidikan Sultan Idris, Tanjong Malim, Perak email: [email protected] Abstract Second language acquisition, or sequential language acquisition, is learning a second language after a first language is already established (Krashen, 1981). The field of second language, L2 acquisition research always has been associated to understand the underpinnings of second language grammars and the factors that influence the development of those grammars. While this is a wide ranging area of interest, this paper emphasis on the common patterns of grammars of Tamil as second language in particular to phonological acquisition. It is unknown whether it could be easier for a learner of a non-quantity language to Tamil quantity if this feature would instead delay or disturb the acquisition. Therefore, the current research assess the acquisition of Tamil phonology Tamil by the Malay learners. A clear asymmetric pattern of acquisition between both the tests emerged that the subjects were able to acquire the non-identical Tamil phonology from Malay by sound than the form or structure. This is because, majority of the subjects were found that they are able to identify by sound the correct form or structure of the two vowels /ai/ and /ao/ though these vowels are not available or identical in L1. In contrast to this, majority of the subjects were not able to give a correct response to these vowels in the oral test. -
Outer and Inner Indo-Aryan, and Northern India As an Ancient Linguistic Area
Acta Orientalia 2016: 77, 71–132. Copyright © 2016 Printed in India – all rights reserved ACTA ORIENTALIA ISSN 0001-6483 Outer and Inner Indo-Aryan, and northern India as an ancient linguistic area Claus Peter Zoller University of Oslo Abstract The article presents a new approach to the old controversy concerning the veracity of a distinction between Outer and Inner Languages in Indo-Aryan. A number of arguments and data are presented which substantiate the reality of this distinction. This new approach combines this issue with a new interpretation of the history of Indo- Iranian and with the linguistic prehistory of northern India. Data are presented to show that prehistorical northern India was dominated by Munda/Austro-Asiatic languages. Keywords: Indo-Aryan, Indo-Iranian, Nuristani, Munda/Austro- Asiatic history and prehistory. Introduction This article gives a summary of the most important arguments contained in my forthcoming book on Outer and Inner languages before and after the arrival of Indo-Aryan in South Asia. The 72 Claus Peter Zoller traditional version of the hypothesis of Outer and Inner Indo-Aryan purports the idea that the Indo-Aryan Language immigration1 was not a singular event. Yet, even though it is known that the actual historical movements and processes in connection with this immigration were remarkably complex, the concerns of the hypothesis are not to reconstruct the details of these events but merely to show that the original non-singular immigrations have left revealing linguistic traces in the modern Indo-Aryan languages. Actually, this task is challenging enough, as the long-lasting controversy shows.2 Previous and present proponents of the hypothesis have tried to fix the difference between Outer and Inner Languages in terms of language geography (one graphical attempt as an example is shown below p. -
The Shape of Phylogenetic Trees (Review Paper)
REVIEW PAPER: THE SHAPE OF PHYLOGENETIC TREESPACE KATHERINE ST. JOHN Abstract: Trees are a canonical structure for representing evolutionary histories. Many popular criteria used to infer optimal trees are computationally hard, and the number of possible tree shapes grows super-exponentially in the number of taxa. The underlying structure of the spaces of trees yields rich insights that can improve the search for optimal trees, both in accuracy and running time, and the analysis and visualization of results. We review the past work on analyzing and comparing trees by their shape as well as recent work that incorporates trees with weighted branch lengths. Keywords: tree metrics, treespace, maximum parsimony, maximum likelihood. Tree structures have long been used to represent the evolutionary histories of sets of species. For example, the tips of the trees represent extant species and the internal nodes represent speciation events. Despite its simplicity, the tree model captures much of the complexity of the underlying phenomena. However, the sheer number of possibilities forces many simply presented operations on trees to be computationally hard. For example, the maximum parsimony criteria (Farris, 1970; Fitch, 1971) that seeks the tree with the minimal number of changes across the edges is compu- tationally hard to compute exactly (Foulds and Graham, 1982). The addition of weights on the branches, to denote quantities such as amount of evolutionary change, the time, or the confidence on the existence of the branch, adds complexity to the model (Felsenstein, 1973, 1978). A pop- ular corresponding optimality criteria for weighted trees, the maximum likelihood criteria, is also computationally hard (Roch, 2006). -
Autochthonous Aryans? the Evidence from Old Indian and Iranian Texts
Michael Witzel Harvard University Autochthonous Aryans? The Evidence from Old Indian and Iranian Texts. INTRODUCTION §1. Terminology § 2. Texts § 3. Dates §4. Indo-Aryans in the RV §5. Irano-Aryans in the Avesta §6. The Indo-Iranians §7. An ''Aryan'' Race? §8. Immigration §9. Remembrance of immigration §10. Linguistic and cultural acculturation THE AUTOCHTHONOUS ARYAN THEORY § 11. The ''Aryan Invasion'' and the "Out of India" theories LANGUAGE §12. Vedic, Iranian and Indo-European §13. Absence of Indian influences in Indo-Iranian §14. Date of Indo-Aryan innovations §15. Absence of retroflexes in Iranian §16. Absence of 'Indian' words in Iranian §17. Indo-European words in Indo-Iranian; Indo-European archaisms vs. Indian innovations §18. Absence of Indian influence in Mitanni Indo-Aryan Summary: Linguistics CHRONOLOGY §19. Lack of agreement of the autochthonous theory with the historical evidence: dating of kings and teachers ARCHAEOLOGY __________________________________________ Electronic Journal of Vedic Studies 7-3 (EJVS) 2001(1-115) Autochthonous Aryans? 2 §20. Archaeology and texts §21. RV and the Indus civilization: horses and chariots §22. Absence of towns in the RV §23. Absence of wheat and rice in the RV §24. RV class society and the Indus civilization §25. The Sarasvatī and dating of the RV and the Bråhmaas §26. Harappan fire rituals? §27. Cultural continuity: pottery and the Indus script VEDIC TEXTS AND SCIENCE §28. The ''astronomical code of the RV'' §29. Astronomy: the equinoxes in ŚB §30. Astronomy: Jyotia Vedåga and the -
Article an Critical Analysis of Speech Recognition of Tamil and Malay Language Through Artificial Neural Network
Turkish Journal of Computer and Mathematics Education Vol.12 No.9 (2021),1305-1317 Research Article An Critical Analysis of Speech Recognition of Tamil and Malay Language Through Artificial Neural Network Dr.Kingston Pal Thamburaj1, Dr.Kartheges Ponniah2, Dr.Ilankumaran Sivanathan3,Dr.Muniiswaran Kumar4 1Senior Lecturer, Tamil Program Coordinator, Sultan Idris Education University, Malaysia 2Senior Lecturer, Tamil Program Coordinator, Sultan Idris Education University, Malaysia 3Senior Lecturer, Tamil Program Coordinator, Sultan Idris Education University, Malaysia 4Senior Lecturer, Tamil Program Coordinator, Sultan Idris Education University, Malaysia Article History: Received: 10 January 2021; Revised: 12 February 2021; Accepted: 27 March 2021; Published online: 20 April 2021 Abstract:Human and Computer interaction has been a part of our day-to-day life. Speech is one of the essential and comfortable ways of interacting through devices as well as a human being. The device, particularly smartphones have multiple sensors in camera and microphone, etc. speech recognition is the process of converting the acoustic signal to a smartphone as a set of words. The efficient performance of the speech recognition system highly enhances the interaction between humans and machines by making the latter more receptive to user needs. The recognized words can be applied for many applications such as Commands & Control, Data entry, and Document preparation. This research paper highlights speech recognition through ANN (Artificial Neural Network). Also, a hybrid model is proposed for audio-visual speech recognition of the Tamil and Malay language through SOM (Self-organizing map0 and MLP (Multilayer Perceptron). The Effectiveness of the different models of NN (Neural Network) utilized in speech recognition will be examined. -
The Indo-Europeanization of the World from a Central Asian Homeland: New Approaches, Paradigms and Insights from Our Research Publications on Ancient India
Journal of Social Science Studies ISSN 2329-9150 2016, Vol. 3, No. 1 The Indo-Europeanization of the World from a Central Asian Homeland: New Approaches, Paradigms and Insights from Our Research Publications on Ancient India Sujay Rao Mandavilli (Corresponding author) Independent Scholar, India E-mail: [email protected] Received: August 3, 2015 Accepted: September 8, 2015 Published: September 10, 2015 doi:10.5296/jsss.v3i1.8278 URL: http://dx.doi.org/10.5296/jsss.v3i1.8278 Abstract In this paper, we bring together the concepts put forth in our previous papers and throw new light on how the Indo-Europeanization of the world may have happened from the conventional Central Asian homeland and explain the same using maps and diagrams. We also propose the ‘Ten modes of linguistic transformations associated with Human migrations.’ With this, the significance of the proposed term ‘Base Indo-European’ in lieu of the old term ‘Proto Indo-European’ will become abundantly clear to most readers. The approaches presented in this paper are somewhat superior to existing approaches, and as such are expected to replace them in the longer run. Detailed maps and notes demonstrating and explaining how linguistic transformations might have taken place in South Asia are available in this paper as understood from our previous research papers, and scholars from other parts of the world are invited to develop similar paradigms with regard to their home countries as far as the available data or evidence will allow them. This will help piece together a gigantic jig-saw puzzle, and lead to a revolution of sorts in the field, leading to a ripple-effect that will strongly impact several other related fields of study as well. -
Genetic Relationship Among Languages: an Overview Ghayeth Ersheidat1* and Hafsa Tahir2 1Department of Translation, Faculty of Arts, Yarmouk University, Irbid, Jordon
INTERNATIONAL JOURNAL OF LANGUAGE EDUCATION AND APPLIED LINGUISTICS (IJLEAL) ISSN: 2289-7208 e-ISSN: 2289-9294 VOL. 10, ISSUE 1, 17 – 27 DOI: https://doi.org/10.15282/ijleal.v10.3320 ORIGINAL ARTICLE Genetic Relationship among Languages: An Overview Ghayeth Ersheidat1* and Hafsa Tahir2 1Department of Translation, Faculty of Arts, Yarmouk University, Irbid, Jordon. 2Department of Biology, Faculty of Scence and Technology, Virtual University of Pakistan, Lahore, Pakistan. ARTICLE HISTORY ABSTRACT – This paper reviews the basic concepts of historical linguistics and the comparative Revised: 4 March 2020 techniques used by various linguists who studied Indo-European and American languages to Accepted: 9 March 2020 determine a shared ancestry among languages. This paper also evaluates the major concepts of historical linguistics and the well-grounded theories and classifications that have guided and KEYWORDS shaped the modern linguistic classification practices. For over one and a half century, historical Historical comparative-method linguists have been deducing the origins of different languages. Genetic classifications have been Historical linguistics proposed for languages from all parts of the world and thus far, 142 language-families have been Indo-European languages identified. Although all of these classification schemes are controversial in terms of their validity Language family and reliability but with the progress in the field of bioinformatics, the problems in linguistic Linguistic-tree Proto-language reconstruction have been greatly resolved. Therefore, the historical classification schemes that have been proposed earlier are being radically revised as further progress is made. It is suggested that, to develop further understanding of the typical pattern of language diversification and genetic classification of languages, more recent studies based on sophisticated bioinformatics and statistical techniques for linguistic data analysis should be reviewed.