1,354,203 research outputs found
Effect of boundaries on disorientation during teleportation in virtual environments
No full textPrevious work (Cherep, Lim, Kelly, Acharya, et al., 2020; Cherep, Kelly, Miller, Lim, et al., under revision; Kelly et al., 2020) has shown that boundaries (walls or a fence) were helpful for reducing disorientation when teleporting (changing position or orientation usually without accompanying rotational or translational self-motion cues). This finding is consistent with animal and human neuroscience research identifying neurons and/or brain regions that respond to boundaries (Hartley, et al., 2000; Lever et al., 2009). In animal research, neurons that respond to navigational boundaries (a wall or a drop-off) do not respond to texture boundaries, which suggests that boundaries which impede navigation have special status. Therefore, the ability for navigational boundaries and texture boundaries to facilitate triangle completion performance will be investigated using two different locomotion interfaces (partially concordant teleporting and discordant teleporting). Partially concordant teleporting involves using a controller to change position within the virtual environment (VE) but using the body to change orientation. Discordant teleporting involves using a controller to change position and orientation without movement of the user’s body.
Five virtual environments (VEs) will be explored:
1) Open field without landmarks VE*
2) Square fence without landmarks VE*
3) Carpet VE
4) Drop-off VE
5) Classroom VE*
*Used previously in Cherep, Lim, Kelly, Acharya, et al. (2020); Cherep, Kelly, Miller, Lim, et al. (under revision
Comedia, felicidad y trabajo: Hacia una dialéctica del sinsentido
No full textAnálisis de películas recientes (Una paloma se posó sobre una rama a reflexionar sobre la existencia, de Roy Andersson y Un cuento proletario de invierno, de Julian Radlmaier) que desde el punto de vista de su contenido comparten una inquietud por la justicia y la felicidad. Desde el punto de vista formal, juegan con la fragmentariedad del relato trascendiendo los límites del género.Fil: García Cherep, Paula. Universidad Nacional del Litoral. Instituto de Humanidades y Ciencias Sociales del Litoral. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Humanidades y Ciencias Sociales del Litoral; Argentin
Testing of Code-Based Pseudorandom Number Generators for Post-Quantum Application
No full textThis article presents the results of studies of design pseudorandom sequence generators using code-based cryptosystems. The resistance of this generators type is based on the complexity of solving the syndrome decoding problem, which allows to provide resistance to classic cryptanalysis and cryptanalysis using quantum computing. The article describes the principles of constructing a classic Fisher-Stern generator and proposes a new approach to design a code-based generator that can be applied in the post-quantum period. Heuristic testing of the presented generators was also conducted in terms of a period length, a sequence generation speed, and a resistance of the generators, which revealed the Fisher-Stern generator deficiency. It is a difference between a theoretical and a practical period of the generated sequences, which is eliminated in the proposed generator by adding two components: a linear feedback shift register and an adder
SYMBOLS OF THE FAIRY TALE "CHEREP-TEREM" (FROM THE "HISTORY OF SYMBOLS OF SLAVIC MYTHOLOGY")
No full textThis report is part of a research work in the field of symbolism of Slavic mythology. Developments on this topic were repeatedly presented by the author at various conferences of past years [Zaporozhets 2020 a), b), c), d), e)]. Today we will continue the study of the symbols of the figurative mythological structure based on the fairy tale "Cherep-terem" from the book by Yu G. Kruglov [Kruglov 1992], who published in his collection the best examples of Russian fairy tale folklore in the arrangements of A. N. Afanasyev, I. A. Khudyakov, D. N. Sadovnikov, N. Ye. Onchukov, D. K. Zelenin and other famous authors. In our report, we will briefly consider the symbolism of the characters in the fairy tale and note the pattern in the development of its plot
The Poetics of G.A. Zotov’s Works "Pechat Luni" , "Cherep Subboti": Modification of an Anti-Utopian Novel.
No full textDiāna Djačenko G. Zotova „Mēneša zīmoga” un „Sestdienas galvaskausa” poētika: antiutopijas žanra modifikācija: maģistra darbs. – Rīga, 2016. – 54 lpp. Darbs ir veltīts G. A. Zotova romānu „Mēness zīmogs”un „Sestdienas galvaskauss” poētikas un žanru specifikas izpētei. Nospraustā mērķa sasniegšanai darba autore izpētījusi pastāvošus literatūrzinātniskos darbus, kas veltīti romāna kā žanra problemātikai, mūsdienu literatūras pētīšanas problēmām, romāna-antiutopijas specifikai un veidiem. Praktiskajā daļā secīgi, saskaņā ar noteiktajiem uzdevumiem, tiek atklāti G. A. Zotova darbu kā alternatīvās vēstures romānu paveidu poētikas īpatnības. Pamatojoties uz veikto pētījumu, secināts, ka G. A. Zotova romāni „Mēness zīmogs” un „Sestdienas galvaskauss” ir daudzplānu no žanra skatupunkta, apvienojot sevī divus pamata žanrus: alternatīvās vēstures romāns un detektīvs. Tāpat darbā atrastas alternatīvās vēstures romāna pazīmes, kas salīdzinātas ar antiutopijas pazīmēm. Pētījums var ieinteresēt filologus, kas nodarbojas ar līdzīgu problemātiku, kā arī visus lasītājus, kurus interesē šis jautājums. ATSLĒGVĀRDI G. A. Zotovs, antiutopija, alternatīvā vēsture, mūsdienu literatūraDyachenko Diana The Poetics of G.A. Zotov’s Works "Pechat Luni" , "Cherep Subboti": Modification of an Anti-Utopian Novel: мaster paper. - Riga, 2016. - 54 pages. This work is dedicated to research about poetics and novel genre specification in G.A. Zotov's "Pechat Luni" and "Cherep Subboti". To achive this task, the author of this work has studied the already existing work of other literature specialists, that were also about problems in novel genre, particular qualities of studying modern literature, specifics and the different kinds of dystopia novels. In the practical part, by order in which the tasks are set, I highlight the specialties in Zotov's work poetics as differences in alternative history novel. Based on this research it is found that Zotov novels: "Pechat Luni" and "Cherep Subboti" are considered multi-faced from genre point of view, combining two main genres: alternative history novel and crime. Also this study shows the signs of the alternative history novel and are compared to the signs of the dystopia. This study should be interesting to philologists, that work in a similar field, and anyone else who is interested in this topic. KEY WORDS G.A. Zotoc, antiutopia, alternative history, modern literatur
Spatial cognitive implications of teleporting through virtual environments
No full textCherep, L.A., Lim, A.F., Kelly, J.W., Acharya, D., Velasco, A., Bustamante, E., Ostrander, A., & Gilbert, S.B. (2020). Spatial cognitive implications of teleporting through virtual environments. Journal of Experimental Psychology: Applied, 26(3), 480-492
Code-based Pseudorandom Generator for the Post-Quantum Period
No full textThis paper focuses on research of a provably secure code-based pseudorandom sequence generators whose cryptanalysis problem equals to syndrome decoding (belonging to the NP-complex class). It was found that generated sequences of such well-known Fischer-Stern code-based generator don't have a maximum period, the actual period is much lower than expected. In our work, we have created a new generator scheme. It retains all advantages of the Fisher-Stern algorithm and provides pseudorandom sequences which are formed with maximum period. Also comparative analysis of proposed generator and popular generators was conducted
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Boundaries reduce disorientation in virtual reality
No full textVirtual reality users are susceptible to disorientation, particularly when using locomotion interfaces that lack self-motion cues. Environmental cues, such as boundaries defined by walls or a fence, provide information to help the user remain oriented. This experiment evaluated whether the type of boundary impacts its usefulness for staying oriented. Participants wore a head-mounted display and performed a triangle completion task in virtual reality by traveling two outbound path segments before attempting to point to the path origin. The task was completed with two teleporting interfaces differing in the availability of rotational self-motion cues, and within five virtual environments differing in the availability and type of boundaries. Pointing errors were highest in an open field without environmental cues, and lowest in a classroom with walls and landmarks. Environments with a single square boundary defined by a fence, drop-off, or floor texture discontinuity led to errors in between the open field and the classroom. Performance with the floor texture discontinuity was similar to that with navigational barriers (i.e., fence and drop-off), indicating that an effective barrier need not be a navigational impediment. These results inform spatial cognitive theory about boundary-based navigation and inform application by specifying the types of environmental and self-motion cues that designers of virtual environments should include to reduce disorientation in virtual reality.This article is published as Kelly JW, Doty TA, Cherep LA and Gilbert SB (2022) Boundaries Reduce Disorientation in Virtual Reality. Front. Virtual Real. 3:882526. DOI: 10.3389/frvir.2022.882526. Copyright 2022 Kelly, Doty, Cherep and Gilbert. Attribution 4.0 International (CC BY 4.0). Posted with permission
Teleporting through virtual environments: Effects of path scale and environmental scale on spatial updating
No full textKelly, J.W., Lim, A.F., Cherep, L.A., Ostrander, A., & Gilbert, S.B. (2020). Teleporting through virtual environments: Effects of path scale and environment scale on spatial updating. IEEE: Transactions on Visualization and Computer Graphics, 26(5), 1841-1850
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