Relevant bibliographies by topics / Geodelic languages

Academic literature on the topic 'Geodelic languages'

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Published: 26 July 2024

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Journal articles on the topic "Geodelic languages"

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HERMILLER, SUSAN, DEREK F. HOLT, and SARAH REES. "STAR-FREE GEODESIC LANGUAGES FOR GROUPS." International Journal of Algebra and Computation 17, no. 02 (March 2007): 329–45. http://dx.doi.org/10.1142/s0218196707003603.

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In this article we show that every group with a finite presentation satisfying one or both of the small cancellation conditions C′(1/6) and C′(1/4) - T(4) has the property that the set of all geodesics (over the same generating set) is a star-free regular language. Star-free regularity of the geodesic set is shown to be dependent on the generating set chosen, even for free groups. We also show that the class of groups whose geodesic sets are star-free with respect to some generating set is closed under taking graph (and hence free and direct) products, and includes all virtually abelian groups.
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JOHNSGARD, KARIN. "TWO AUTOMATIC SPANNING TREES IN SMALL CANCELLATION GROUP PRESENTATIONS." International Journal of Algebra and Computation 06, no. 04 (August 1996): 429–40. http://dx.doi.org/10.1142/s0218196796000258.

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Gersten and Short showed that group presentations satisfying certain minimal small cancellation conditions are automatic. The automatic structure they described does not have unique group element representatives. It is easy, however, to modify their language to produce an automatic spanning tree of geodesics: that is, an automatic structure of geodesics which is both prefix-closed and has unique representatives. When combined with a construction showing that all geodesic representatives of a group element are encoded in a tiling of a particular geometric form, this shows that in fact the language of lexicographically least geodesics is also automatic (it is clearly a spanning tree).
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Shevshenko, G. G. "Using search methods for leveling and assessing the accuracy of elementary geodetic constructions." Geodesy and Cartography 952, no. 10 (November 20, 2019): 10–20. http://dx.doi.org/10.22389/0016-7126-2019-952-10-10-20.

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The author provides information about the search methods of adjustment and assessment of the elementary geodetic constructions accuracy on the example of a geodesic triangle under various initial conditions. An algorithm for combining Powell and DSC search methods used to solve the problem posed in the article is given. To equalize the geodesic constructions under consideration by the search method, a program for finding the minimum of the objective function is made, it implements the algorithm described in the article. This program works in the Microsoft Excel format as a macro recorded in the VBA language. Examples of equalization calculations are given. Accuracy assessment of the adjustment results by the search method of the geodesic triangle under different initial conditions is performed. The obtained adjustment results and accuracy estimates are compared with the calculations performed in the NW program by Professor Kougiya V. A. confirmed the correctness of the search method application.
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LOEFFLER, JOSEPH, JOHN MEIER, and JAMES WORTHINGTON. "GRAPH PRODUCTS AND CANNON PAIRS." International Journal of Algebra and Computation 12, no. 06 (December 2002): 747–54. http://dx.doi.org/10.1142/s021819670200122x.

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A pair (G, A) consisting of a group G and a finite generating set A is a Cannon pair if the language of all geodesics in the associated Cayley graph is regular. We prove that the Cannon pair property is preserved by graph products and indicate applications of this result to the geodesic and spherical growth series of graph products.
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Shea, Kristina, and Jonathan Cagan. "Innovative dome design: Applying geodesic patterns with shape annealing." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 11, no. 5 (November 1997): 379–94. http://dx.doi.org/10.1017/s0890060400003310.

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AbstractShape annealing, a computational design method applied to structural design, has been extended to the design of traditional and innovative three-dimensional domes that incorporate the design goals of efficiency, economy, utility, and elegance. In contrast to deterministic structural optimization methods, shape annealing, a stochastic method, uses lateral exploration to generate multiple designs of similar quality that form a structural language of solutions. Structural languages can serve to enhance designer creativity by presenting multiple, spatially innovative, yet functional design solutions while also providing insight into the interaction between structural form and the trade-offs involved in multi-objective design. The style of the structures within a language is a product of the shape grammar that defines the allowable structural forms and the optimization model that provides a functional measure of the generated forms to determine the desirable designs. This paper presents an application of geodesic dome patterns that have been embodied in a shape grammar to define a structural language of domes. Within this language of domes, different dome styles are generated by changing the optimization model for dome design to include the design goals of maximum enclosure space, minimum surface area, minimum number of distinct cross-sectional areas, and visual uniformity. The strengths of the method that will be shown are 1) the generation of both conventional domes similar to shape optimization results and spatially innovative domes, 2) the generation of design alternatives within a defined design style, and 3) the generation of different design styles by modifying the language semantics provided by the optimization model.
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Chrobak, Marzena. "Komunikacja językowa w osiemnastowiecznych francuskich wyprawach naukowych do Laponii, Peru i Afryki Południowej." Między Oryginałem a Przekładem 27, no. 4(54) (December 21, 2021): 33–49. http://dx.doi.org/10.12797/moap.27.2021.54.02.

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Interlingual Communication during French Scientific Expeditions to Lappland, Peru and South Africa in the 18th Century In this paper, I try to outline the image of the interlingual communication during scientific expeditions by detecting and analysing remarks about such instances in the narratives by the expeditions’ commanders. I analyse a narrative of Maupertuis on his geodesic mission to Lappland (1734- 1735), two narratives of La Condamine on his geodesic mission to Peru (1735-1743), and two narratives of Le Vaillant on his travels across South Africa (1781-1784). During his short stay in Lappland, Maupertuis was assisted by a Swedish astronomer and by a Laponian, both speaking French and Finnish. La Condamine and Le Vaillant learned local languages (Spanish, Quechua; Hottentot, Namaqua) in order to eliminate the intermediation of an interpreter. In linguistically fragmented areas, they worked with random natural interpreters. French scientists also made use of the native inhabitants’ familiarity with European languages: official languages of the colonies (Spanish in Peru, Dutch in South Africa) and French, the language of social, cultural and scientific discourse in the 18th century, which they acquired for pleasure.
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HERMILLER, SUSAN, DEREK F. HOLT, and SARAH REES. "GROUPS WHOSE GEODESICS ARE LOCALLY TESTABLE." International Journal of Algebra and Computation 18, no. 05 (August 2008): 911–23. http://dx.doi.org/10.1142/s0218196708004676.

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A regular set of words is (k-)locally testable if membership of a word in the set is determined by the nature of its subwords of some bounded length k. In this article we study groups for which the set of all geodesic words with respect to some generating set is (k-)locally testable, and we call such groups (k-)locally testable. We show that a group is 1-locally testable if and only if it is free abelian. We show that the class of (k-)locally testable groups is closed under taking finite direct products. We show also that a locally testable group has finitely many conjugacy classes of torsion elements. Our work involved computer investigations of specific groups, for which purpose we implemented an algorithm in GAP to compute a finite state automaton with language equal to the set of all geodesics of a group (assuming that this language is regular), starting from a shortlex automatic structure. We provide a brief description of that algorithm.
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Hermiller, Susan, and Zoran Šunić. "No positive cone in a free product is regular." International Journal of Algebra and Computation 27, no. 08 (December 2017): 1113–20. http://dx.doi.org/10.1142/s0218196717500527.

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We show that there exists no left order on the free product of two nontrivial, finitely generated, left-orderable groups such that the corresponding positive cone is represented by a regular language. Since there are orders on free groups of rank at least two with positive cone languages that are context-free (in fact, 1-counter languages), our result provides a bound on the language complexity of positive cones in free products that is the best possible within the Chomsky hierarchy. It also provides a strengthening of a result by Cristóbal Rivas which states that the positive cone in a free product of nontrivial, finitely generated, left-orderable groups cannot be finitely generated as a semigroup. As another illustration of our method, we show that the language of all geodesics (with respect to the natural generating set) that represent positive elements in a graph product of groups defined by a graph of diameter at least 3 cannot be regular.
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Elder, Murray. "Regular geodesic languages and the falsification by fellow traveler property." Algebraic & Geometric Topology 5, no. 1 (March 10, 2005): 129–34. http://dx.doi.org/10.2140/agt.2005.5.129.

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Nasreddine, Kamal, and Abdesslam Benzinou. "Shape geodesics for robust sign language recognition." IET Image Processing 13, no. 5 (April 18, 2019): 825–32. http://dx.doi.org/10.1049/iet-ipr.2018.5282.

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Dissertations / Theses on the topic "Geodelic languages"

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Milan, Vrtunski. "Model geosenzorske mreže za monitoring terena i objekata u realnom vremenu." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107637&source=NDLTD&language=en.

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Praćenje promena, odnosno, monitoring terena i objekata je zadatak odizuzetnog značaja, jer omogućava, u prvom redu, pravovremenoreagovanje i time smanjenje materijalne štete i ljudskih žrtava.Primena modernih tehnologija u oblasti senzora i komunikacijaobezbeđuje monitoring terena i objekata u realnom vremenu. Prostornodistribuirani senzori – geosenzorska mreža, prikupljaju podatke, kojise na računarima skladište i analiziraju. Disertacija se bavimodelom geosenzorske mreže, kao opštim rešenjem za monitoringterena i objekata, koje predstavlja polaznu osnovu od koje se može doćido sistema koji zadovoljava postavljene zahteve.
Observing of changes, that is, monitoring of terrain and objects, is verysignificant task, since it enables timely response and thus decreasing ofmaterial damage and human casualties. Usage of modern sensor andcommunication technologies provides real-time monitoring of terrain andobjects. Spatialy distributed sensors, i.e. geosensor network, gather the datawhich are then stored and analyzed. In this disertation a model of geosensornetwork is proposed as a generalized solution for monitoring of terrain andobjects which can represent a basis in creating a system that can be alteredto meet the requirements in certain cases.
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Marija, Savanović. "PRILOG RAZVOJU METODOLOGIJA IZRADE OPTIMALNIH PROJEKATA LOKALNIH GEODETSKIH MREŽA METROA." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104714&source=NDLTD&language=en.

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U doktorskoj disertaciji je prikazan postupak optimizacije podzemne mrežeza potrebe izgradnje beogradskog metroa. U postupku optimizacije korišćenje metod prethodne ocene tačnosti. Na osnovu građevinskih standardaizvršen je proračun zahtevane tačnosti proboja tunela, kao osnovnogkriterijuma tačnosti za razvijanje podzemne tunelske mreže. U postupkuoptimizacije analizirani su različiti planovi opažanja, kao i dobijeni rezultatiprethodne analize za svaki plan pojedinačno. Na osnovu zadatog kriterijumamaksimalne poprečene greške proboja tunela usvojen je konačan planopažanja.
The docotoral thesis presents an optimization method of the undergroundnetwork for the construction of the Belgrade metro. In the process ofoptimization, method of preanalysis has been used. Based on theconstruction standards, the calculation of the required breakthroughaccuracy, as the fundamental criteria of accuracy for the development of theunderground tunnel network, has been made. In the process of optimizationdifferent plans of observations have been analyzed, as well as the resultsobtained from the preanalysis for each plan individually. Based on therequired criteria of maximal transverse error of the tunnel breakthrough, thefinal plan of observations has been adopted.
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Books on the topic "Geodelic languages"

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Mann, Peter. Constrained Hamiltonian Dynamics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198822370.003.0021.

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This chapter focuses on autonomous geometrical mechanics, using the language of symplectic geometry. It discusses manifolds (including Kähler manifolds, Riemannian manifolds and Poisson manifolds), tangent bundles, cotangent bundles, vector fields, the Poincaré–Cartan 1-form and Darboux’s theorem. It covers symplectic transforms, the Marsden–Weinstein symplectic quotient, presymplectic and symplectic 2-forms, almost symplectic structures, symplectic leaves and foliation. It also discusses contact structures, musical isomorphisms and Arnold’s theorem, as well as integral invariants, Nambu structures, the Nambu bracket and the Lagrange bracket. It describes Poisson bi-vector fields, Poisson structures, the Lie–Poisson bracket and the Lie–Poisson reduction, as well as Lie algebra, the Lie bracket and Lie algebra homomorphisms. Other topics include Casimir functions, momentum maps, the Euler–Poincaré equation, fibre derivatives and the geodesic equation. The chapter concludes by looking at deformation quantisation of the Poisson algebra, using the Moyal bracket and C*-algebras to develop a quantum physics.
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E Han ce hui ci hui =: [Russko-kitaikii slovar po geodezii, aerofotosemke i kartografii]. Xin hua shu dian zong dian ke ji fa xing suo fa xing, 1990.

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Slovarʹ geograficheskikh nazvaniĭ Rumynii: GKINP-13-210-87 : utverzhden Glavnym upravleniem geodezii i kartografii pri Sovete Ministrov SSSR : obi͡a︡zatelen dli͡a︡ vsekh gosudarstvennykh komitetov, ministerstv, vedomstv, predprii͡a︡tiĭ, uchrezhdeniĭ i organizat͡s︡iĭ SSSR. Moskva: T͡S︡NIIGAiK., 1988.

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Book chapters on the topic "Geodelic languages"

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Chazelle, Bernard, Herbert Edelsbrunner, Michelangelo Grigni, Leonidas Guibas, John Hershberger, Micha Sharir, and Jack Snoeyink. "Ray shooting in polygons using geodesic triangulations." In Automata, Languages and Programming, 661–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/3-540-54233-7_172.

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Stoll, M. "Regular geodesic languages for 2-step nilpotent groups." In Combinatorial and Geometric Group Theory, Edinburgh 1993, 294–99. Cambridge University Press, 1994. http://dx.doi.org/10.1017/cbo9780511566073.024.

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Rindler, Wolfgang. "Geodesics, curvature tensor and vacuum field equations." In Relativity, 203–27. Oxford University PressOxford, 2006. http://dx.doi.org/10.1093/oso/9780198567318.003.0010.

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Abstract Whereas historically SR could progress quite a long way (until 1908, to be exact) without recourse to tensors, no such elementary access to GR is possible. The very foundations of the theory, the field equations, require the language of tensors even for their enunciation.
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Carlip, Steven. "Derivatives and curvature." In General Relativity, 37–51. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198822158.003.0005.

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This chapter develops tensor calculus: integration on manifolds, Cartan calculus for differential forms, connections and covariant derivatives, and the Levi-Civita connection used in general relativity. It then introduces the Riemann curvature tensor in several different ways, including the most directly physical picture of the curvature as a measure of the convergence of neighboring geodesics. The chapter concludes with a discussion of Cartan’s beautiful formulation of the connection and curvature in the language of differential forms.
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Oreskes, Naomi. "From Fact to Theory." In The Rejection of Continental Drift. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195117325.003.0012.

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If continental drift was not rejected for lack of a mechanism, why was it rejected? Some say the time was not ripe. Historical evidence suggests the reverse. The retreat of the thermal contraction theory in the face of radioactive heat generation, the conflict between isostasy and land bridges, and the controversy that Wegener’s theory provoked all show that the time was ripe for a new theory. In 1921, Reginald Daly complained to Walter Lambert about the “bankruptcy in decent theories of mountain-building.” Chester Longwell opined in 1926 that the “displacement hypothesis, in its general form . . . promises a solution of certain troublesome enigmas.” A year later, William Bowie suggested in a letter to Charles Schuchert that it was time for “a long talk on some of the major problems of the earth’s structure and the processes which have caused surface change. The time is ripe for an attack on these larger phases of geology.” One possibility is that the fault lay with Wegener himself, that his deficiencies as a scientist discredited his theory. Wegener was in fact abundantly criticized for his lack of objectivity. In a review of The Origin of Continents, British geologist Philip Lake accused him of being “quite devoid of critical faculty.” No doubt Wegener sometimes expressed himself incautiously. But emphatic language characterized both sides of the drift debate, as well as later discussions of plate tectonics. The strength of the arguments was more an effect than a cause of what was at stake. Some have blamed Wegener’s training, disciplinary affiliations, or nationality for the rejection of his theory, but these arguments lack credibility. Wegener’s contributions to meteorology and geophysics were widely recognized; his death in 1930 prompted a full-page obituary in Nature, which recounted his pioneering contributions to meteorology and mourned his passing as “a great loss to geophysical science.” Being a disciplinary outsider can be an advantage — it probably was for Arthur Holmes when he first embarked on the radiometric time scale. To be sure, there were nation alistic tensions in international science in the early 1920s— German earth scientists complained bitterly over their exclusion from international geodetic and geophysical commissions— but by the late 1920s the theory of continental drift was associated as much with Joly and Holmes as it was with Wegener.
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Conference papers on the topic "Geodelic languages"

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Sugiyama, Masahide. "Spectral interpolation using distortion geodesic lines." In First International Conference on Spoken Language Processing (ICSLP 1990). ISCA: ISCA, 1990. http://dx.doi.org/10.21437/icslp.1990-143.

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Ma, Huifang, Qing He, and Zhongzhi Shi. "Geodesic distance based multi-document summarization." In 2008 International Conference on Natural Language Processing and Knowledge Engineering (NLP-KE). IEEE, 2008. http://dx.doi.org/10.1109/nlpke.2008.4906785.

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Jha, Rishi, and Kai Mihata. "On Geodesic Distances and Contextual Embedding Compression for Text Classification." In Proceedings of the Fifteenth Workshop on Graph-Based Methods for Natural Language Processing (TextGraphs-15). Stroudsburg, PA, USA: Association for Computational Linguistics, 2021. http://dx.doi.org/10.18653/v1/11.textgraphs-1.15.

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Jha, Rishi, and Kai Mihata. "On Geodesic Distances and Contextual Embedding Compression for Text Classification." In Proceedings of the Fifteenth Workshop on Graph-Based Methods for Natural Language Processing (TextGraphs-15). Stroudsburg, PA, USA: Association for Computational Linguistics, 2021. http://dx.doi.org/10.18653/v1/2021.textgraphs-1.15.

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Fakhfakh, Sana, and Yousra Ben Jemaa. "A green isolated word sign language recognition system based on geodesic metric space." In 2023 International Conference on Cyberworlds (CW). IEEE, 2023. http://dx.doi.org/10.1109/cw58918.2023.00049.

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Diamanti, Olga, and Petros Maragos. "Geodesic active regions for segmentation and tracking of human gestures in sign language videos." In 2008 15th IEEE International Conference on Image Processing. IEEE, 2008. http://dx.doi.org/10.1109/icip.2008.4711950.

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Zablotskii, Vladimir. "TEACHING THE C ++ PROGRAMMING LANGUAGE AT MOSCOW STATE UNIVERSITY OF GEODESY AND CARTOGRAPHY THROUGH THE GEODESIC PROBLEMS AND PROGRAMS." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/21/s07.082.

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Wang, Wei, and Delun Wang. "Curvature Theory of the Envelop Curve / Surface for a Line in Planar Motion and a Plane in Spatial Motion." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28125.

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The curvature theories for the envelop curve of a line in planar motion and the envelop ruled surface of a plane in spatial motion are extensively researched in the differential geometry language. A line-envelop curve in planar motion is firstly derived by means of the adjoint approach. The higher order curvature theory of the envelop curve reveals a unified form in the infinitesimal and finitely separated positions for a line in planar motion. And then, a plane in spatial motion traces the envelop surface, which is a developable surface and whose invariants are concisely derived. The geodesic curvature of the spherical image curve for the generator’s unit vector is readily derived and compared with that of the unit normal vector of the envelop surface. As a result, the curvature theory for a plane-envelop surface in spatial motion are shown in terms of that of the spherical motion, corresponding to the generator’s unit vector and unit normal vector of the envelop surface. Meanwhile, the instantaneous cubic (cone) of stationary curvature and the direction “Burmester’s line” of the generator of the developable envelop surface are revealed. Therefore, a solid theoretical basis is provided for the synthesis of mechanisms and the machining of surface.
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Reports on the topic "Geodelic languages"

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Chamberlain, C. A., and K. Lochhead. Data modeling as applied to surveying and mapping data. Natural Resources Canada/CMSS/Information Management, 1988. http://dx.doi.org/10.4095/331263.

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The Geodetic Survey Division of the Canada Centre for Surveying is replacing the National Geodetic Data Base (NGDB) with the National Geodetic Information System (NGIS). For the NGIS to be successful, it was recognized that a sound, well engineered data mode was essential. The methodology chosen to design the data mode! was Nijssen's Information Analysis Methodology (NIAM), a binary modeling technique that is supported by a Computer Aided Software Engineering (CASE) tool, PC-IAST. An NGIS prototype has also been developed using Digital Equipment of Canada's Relational Database (Rdb) management system and COGNOS Corporations POWERHOUSE 4th generation language. This paper addresses the need for, and the advantages of using a strong engineering approach to data modeling and describes the use of the NIAM methodology in NGIS development. The paper identifies the relationship between the data mode!, data structures, the design and development of a database and the use of automated tools for systems development. In conclusion, critical success factors for the continuation of the N.G.I.S. developments are identified and the benefits that will accrue are enumerated.
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