Relevant bibliographies by topics / Elemental tetrad

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Elemental tetrad'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Elemental tetrad"

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Schrier, Karen. "Designing Games for Moral Learning and Knowledge Building." Games and Culture 14, no. 4 (2017): 306–43. http://dx.doi.org/10.1177/1555412017711514.

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How can we better learn about and teach moral thinking and skills? How can we solve moral problems? One possible way is to create and use moral learning games, or games that enable players to work on moral scenarios, make moral choices, and gain relevant skills. One possible subcategory of these games is moral knowledge games, or games that aim to solve real-world moral problems and create new knowledge about morality. This article systematically analyzes relevant literature and related games and media to uncover a preliminary set of design principles for creating moral learning games and moral knowledge games. Frameworks such as the Elemental Tetrad, Mechanics, Dynamics, and Aesthetics (MDA), and Ethics Practice and Implementation Categorization Framework (EPIC) were used to analyze individual games and media. Ten different categories of principles emerged, along with 95 possible subprinciples. Implications, next steps, and limitations of this analysis were also discussed.
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Grey, Simon, David Grey, Neil Gordon, and Jon Purdy. "Using Formal Game Design Methods to Embed Learning Outcomes into Game Mechanics and Avoid Emergent Behaviour." International Journal of Game-Based Learning 7, no. 3 (2017): 63–73. http://dx.doi.org/10.4018/ijgbl.2017070106.

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This paper offers an approach to designing game-based learning experiences inspired by the Mechanics-Dynamics-Aesthetics (MDA) model (Hunicke et al., 2004) and the elemental tetrad model (Schell, 2008) for game design. A case for game based learning as an active and social learning experience is presented including arguments from both teachers and game designers concerning the value of games as learning tools. The MDA model is introduced with a classic game- based example and a non-game based observation of human behaviour demonstrating a negative effect of extrinsic motivators (Pink, 2011) and the need to closely align or embed learning outcomes into game mechanics in order to deliver an effective learning experience. The MDA model will then be applied to create a game based learning experience with the goal of teaching some of the aspects of using source code control to groups of Computer Science students. First, clear aims in terms of learning outcomes for the game are set out. Following the learning outcomes, the iterative design process is explained with careful consideration and reflection on the impact of specific design decisions on the potential learning experience. The reasons those decisions have been made and where there may be conflict between mechanics contributing to learning and mechanics for reasons of gameplay are also discussed. The paper will conclude with an evaluation of results from a trial of computer science students and staff, and the perceived effectiveness of the game at delivering specific learning outcomes, and the approach for game design will be assessed.
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Khatsymovsky, V. M. "Spectrum of area in the Faddeev formulation of gravity." Modern Physics Letters A 31, no. 19 (2016): 1650114. http://dx.doi.org/10.1142/s0217732316501145.

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Faddeev formulation of general relativity (GR) is considered where the metric is composed of ten vector fields or a ten-dimensional tetrad. Upon partial use of the field equations, this theory results in the usual general relativity (GR). Earlier, we have proposed first-order representation of the minisuperspace model for the Faddeev formulation where the tetrad fields are piecewise constant on the polytopes like four-simplices or, say, cuboids into which [Formula: see text] can be decomposed, an analogue of the Cartan–Weyl connection-type form of the Hilbert–Einstein action in the usual continuum GR. In the Hamiltonian formalism, the tetrad bilinears are canonically conjugate to the orthogonal connection matrices. We evaluate the spectrum of the elementary areas, functions of the tetrad bilinears. The spectrum is discrete and proportional to the Faddeev analog [Formula: see text] of the Barbero–Immirzi parameter [Formula: see text]. The possibility of the tetrad and metric discontinuities in the Faddeev gravity allows to consider any surface as consisting of a set of virtually independent elementary areas and its spectrum being the sum of the elementary spectra. Requiring consistency of the black hole entropy calculations known in the literature we are able to estimate [Formula: see text].
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Goudar, Manu V., and Gerrit E. Elsinga. "Tracer particle dispersion around elementary flow patterns." Journal of Fluid Mechanics 843 (March 28, 2018): 872–97. http://dx.doi.org/10.1017/jfm.2018.146.

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The motion of tracer particles is kinematically simulated around three elementary flow patterns; a Burgers vortex, a shear-layer structure with coincident vortices and a node-saddle topology. These patterns are representative for their broader class of coherent structures in turbulence. Therefore, examining the dispersion in these elementary structures can improve the general understanding of turbulent dispersion at short time scales. The shear-layer structure and the node-saddle topology exhibit similar pair dispersion statistics compared to the actual turbulent flow for times up to $3{-}10\unicode[STIX]{x1D70F}_{\unicode[STIX]{x1D702}}$, where, $\unicode[STIX]{x1D70F}_{\unicode[STIX]{x1D702}}$ is the Kolmogorov time scale. However, oscillations are observed for the pair dispersion in the Burgers vortex. Furthermore, all three structures exhibit Batchelor’s scaling. Richardson’s scaling was observed for initial particle pair separations $r_{0}\leqslant 4\unicode[STIX]{x1D702}$ for the shear-layer topology and the node-saddle topology and was related to the formation of the particle sheets. Moreover, the material line orientation statistics for the shear-layer and node-saddle topology are similar to the actual turbulent flow statistics, up to at least $4\unicode[STIX]{x1D70F}_{\unicode[STIX]{x1D702}}$. However, only the shear-layer structure can explain the non-perpendicular preferential alignment between the material lines and the direction of the most compressive strain, as observed in actual turbulence. This behaviour is due to shear-layer vorticity, which rotates the particle sheet generated by straining motions and causes the particles to spread in the direction of compressive strain also. The material line statistics in the Burgers vortex clearly differ, due to the presence of two compressive principal straining directions as opposed to two stretching directions in the shear-layer structure and the node-saddle topology. The tetrad dispersion statistics for the shear-layer structure qualitatively capture the behaviour of the shape parameters as observed in actual turbulence. In particular, it shows the initial development towards planar shapes followed by a return to more volumetric tetrads at approximately $10\unicode[STIX]{x1D70F}_{\unicode[STIX]{x1D702}}$, which is associated with the particles approaching the vortices inside the shear layer. However, a large deviation is observed in such behaviour in the node-saddle topology and the Burgers vortex. It is concluded that the results for the Burgers vortex deviated the most from actual turbulence and the node-saddle topology dispersion exhibits some similarities, but does not capture the geometrical features associated with material lines and tetrad dispersion. Finally, the dispersion around the shear-layer structure shows many quantitative (until 2–$4\unicode[STIX]{x1D70F}_{\unicode[STIX]{x1D702}}$) and qualitative (until $20\unicode[STIX]{x1D70F}_{\unicode[STIX]{x1D702}}$) similarities to the actual turbulence.
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Zhao, Tong, Qifeng Xing, Kuifeng Song, et al. "Enhancing catalytic activity towards Heck-reaction by using 4,5,9,10-tetra(arylimino)pyrenylidenyldipalladium tetrachlorides." RSC Advances 5, no. 19 (2015): 14228–34. http://dx.doi.org/10.1039/c4ra16193a.

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A series of binuclear 4,5,9,10-tetra(arylimino)pyrenylidenyldipalladium(ii) tetrachloride complexes (Pd1–Pd4) was synthesized and characterized by FT-IR and NMR spectroscopy as well as elemental analysis.
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Chavan, Snehal A., Avinash G. Ulhe, and Baliram N. Berad. "Synthesis and characterization of N-glucosylated dithiadiazepine derivatives through carbon-sulfur bond formation." Heterocyclic Communications 21, no. 5 (2015): 269–72. http://dx.doi.org/10.1515/hc-2015-0093.

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AbstractNew 4,7-bis(arylamino)-2-tetra-O-acetyl-β-d-glucopyranosylimino-1,3,5,6-dithiadiazepines were synthesized via reaction of N-tetra-O-acetyl-β-d-glucopyranosyl isocyanodichloride with 1,6-diaryl-2,5-dithio-bis-ureas without using any catalyst. Thus, the synthesis of 7-membered heterocycles containing two sulfur and two nitrogen atoms through carbon-sulfur bond formation was explored. The chemical structures of these new compounds were elucidated by IR, 1H NMR, 13C NMR, mass spectral, and elemental analyses.
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Çalık, Ali Emre, Baybars Köksoy, Efe Baturhan Orman, Mahmut Durmuş, Ali Rıza Özkaya, and Mustafa Bulut. "4-Carboxymethyl-8-methyl-7-oxycoumarin substituted zinc, cobalt and indium phthalocyanines: electrochemical and photochemical properties." Journal of Porphyrins and Phthalocyanines 17, no. 10 (2013): 1046–54. http://dx.doi.org/10.1142/s108842461350096x.

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In this study, the novel tetra-substituted Zn ( II )(3), Co ( II )(4) and In ( III )acetate (5) phthalocyanines were synthesized by cyclotetramerization reactions of 7-(2,3-dicyanophenoxy)-8-methylcoumarin-4-acetic acid (2) with corresponding metal salts. All the new compounds have been characterized by MALDI-TOF mass, FT-IR and UV-vis spectra, and elemental analysis as well. The electrochemical, in situ spectroelectrochemical and photochemical properties of tetra-substituted Zn ( II ), Co ( II ) and In ( III )acetate phthalocyanines were also investigated.
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KNECHT, S., K. DÜRR, G. SCHMID, L. R. SUBRAMANIAN, and M. HANACK. "Synthesis and properties of soluble phthalocyaninatomanganese(III) complexes." Journal of Porphyrins and Phthalocyanines 03, no. 04 (1999): 292–98. http://dx.doi.org/10.1002/(sici)1099-1409(199904)3:4<292::aid-jpp133>3.0.co;2-e.

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(Acetato)-1,8,15,22-tetra-n-heptylphthalocyaninatomanganese(III) ( C 7 H 15)4 PcMn -( OAc ) (+structural isomers) (1) and the octa-n-heptyl-substituted (acetato)phthalocyaninatomanganese(III) complexes 1,4,8,11,15,18,22,25-( C 7 H 15)8 PcMn ( OAc ) (2) and 2,3,9,10,16,17,23,24-( C 7 H 15)8 PcMn ( OAc ) (3) have been synthesized and characterized by IR and UV-vis spectroscopy and elemental analysis. Electrochemical investigations of complexes 1 and 2 (CV, SEC) show similar electrochemical behaviour as the literature known compound (chloro)-2,9,16,23-tetra-tert-butylphthalocyaninatomanganese(III) (t- bu )4 PcMnCl (+structural isomers) (4).
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Mont, Wolf-Walther du, Tevfik Severengiz, Hans Joachim Breunig, and Ditmar Müller. "Ein Molekül mit Bismut-Tellur-Bindung: p-Tolyltelluro-di-n-propylbismutan / A Molecule with the Bismut-Tellurium Bond: p-Tolyltellurodi-n-propylbismutane." Zeitschrift für Naturforschung B 40, no. 6 (1985): 848–49. http://dx.doi.org/10.1515/znb-1985-0627.

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Abstract Tetra-n-propyldibismutane reacts with equimolar amounts of di-p-tolylditelluride to yield p-tolyl-telluro-di-n-propylbismutane in high yield. This tellurobismutane is the first molecule with a Bi-Te bond. It has been characterised by elemental analysis and by NMR and mass spectra.
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Velásquez-Silva, Betty Astrid, Alver Castillo-Aguirre, Zuly Jenny Rivera-Monroy, and Mauricio Maldonado. "Aminomethylated Calix[4]resorcinarenes as Modifying Agents for Glycidyl Methacrylate (GMA) Rigid Copolymers Surface." Polymers 11, no. 7 (2019): 1147. http://dx.doi.org/10.3390/polym11071147.

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Functionalization of tetrapropylcalix[4]resorcinarene, tetrapentylcalix[4]resorcinarene, tetranonylcalix[4]resorcinarene, and tetra-(4-hydroxyphenyl)calix[4]resorcinarene by means of aminomethylation reactions with the amino acids β-alanine and l-proline in the presence of aqueous formaldehyde was carried out. When β-alanine was used, the reaction products were tetrabenzoxazines. The reaction with tetra-(4-hydroxyphenyl)calix[4]resorcinarene did not proceed under the experimental conditions; therefore, l-proline was used, and the corresponding tetra-Mannich base was regio- and diasteroselectively formed. The products were characterized via FT-IR, 1H NMR, 13C NMR, and elemental analysis. With these aminomethylated-calix[4]resorcinarenes, the chemical surface modification of the copolymers poly(GMA–co–EDMA) and poly(BMA–co–EDMA–co–MMA) in a basic medium was studied. The results were quite satisfactory, obtaining the corresponding copolymers functionalized by nucleophilic substitution reaction and ring-opening between the carboxyl group of the upper rim of aliphatic calix[4]resorcinarenes and the hydroxyl group of the lower rim in the aromatic calix[4]resorcinarene and the epoxy group of the glycidyl methacrylate residue of each copolymer. The modified copolymers were characterized via FT-IR, scanning electron microscopy imaging, and elemental analysis. Finally, the modified copolymer surfaces exhibited interaction with peptides, showing their potential application in chromatographic separation techniques such as high-performance liquid chromatography.
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Dissertations / Theses on the topic "Elemental tetrad"

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Alvim, Vinicius de Lima. "Explorando a indução de reflexões no design de Witcher 2: Assassin of Kings." Universidade Federal de Juiz de Fora (UFJF), 2014. https://repositorio.ufjf.br/jspui/handle/ufjf/4054.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-12T17:35:33Z No. of bitstreams: 1 viniciusdelimaalvim.pdf: 927927 bytes, checksum: 31972cd6d80a0897e5592467b0e4d65a (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-18T13:12:56Z (GMT) No. of bitstreams: 1 viniciusdelimaalvim.pdf: 927927 bytes, checksum: 31972cd6d80a0897e5592467b0e4d65a (MD5)<br>Made available in DSpace on 2017-04-18T13:12:56Z (GMT). No. of bitstreams: 1 viniciusdelimaalvim.pdf: 927927 bytes, checksum: 31972cd6d80a0897e5592467b0e4d65a (MD5) Previous issue date: 2014-05-20<br>A dissertação explora o design do segundo jogo da série Witcher de jogos eletrônicos, visando focar e evidenciar aspectos do design que levam a determinadas correntes de pensamento e reflexão entre seus jogadores. Para tanto, buscamos compreender perspectivas fundamentais do design de jogos - explorar como seus designers criam e pensam os jogos eletrônicos, assim como evidenciar os termos e nomenclaturas utilizados dentro da área para determinadas práticas e correntes de pensamento. Utilizamo-nos então das publicações teóricas de game designers e outros pensadores que voltaram suas reflexões sobre esta mídia - entre eles Katie Salen, Eric Zimmerman e Jesse Schell. Após apresentar estes conceitos ao leitor, analisamos Witcher 2: Assassin of Kings sob a ótica destas perspectivas, evidenciando elementos fundamentais de seu design e observando especialmente aquelas características que acreditamos serem importante para a indução de determinados tipos de reflexão. Por fim, exploramos os fóruns oficiais da CD Projekt em busca de indícios que poderiam nos mostrar como certas escolhas feitas pelos designers na criação desta série de jogos impactaram a experiência de seus jogadores.<br>This dissertation explores the design of the second title in the Witcher series of videogames, aiming to focus and reveal aspects of the game's design that lead to certain trends of thoughts and reflections among its players. With that goal in mind, we strive to understand fundamental perspectives of game design - explore how the designers of videogames create and think about them. Also, we introduce our reader to the terms and jargons used in this field of knowledge to describe certain practices and trends of thought. To do this, we use the theoretical works of game designers and other researchers who dedicated their minds to this media - among them Katie Salen, Eric Zimmerman e Jesse Schell. After describing these concepts to our reader, we analyze The Witcher 2: Assassin of Kings under the gaze of such perspectives, pointing out fundamental elements on its design and emphasizing those traits that we believe are important for the induction of specific thought patterns. In the end, we explore the official foruns of CD Projekt, looking for evidence that could show us how certain choices made by the designers of this videogame series influenced the experience of its players.
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KATO, Takenori, Iwao KAWABE, and Wenfang JIAO. "Reexamination of kimuraite : the occurrence of lanthanite in the cleavages of kimuraite." Dept. of Earth and Planetary Sciences, Nagoya University, 2013. http://hdl.handle.net/2237/20542.

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Chakraborty, Uttam [Verfasser]. "Multiple Bonds between Group 7 Transition Metals and Heavier Tetrel Elements (Ge–Pb) / Uttam Chakraborty." München : Verlag Dr. Hut, 2013. http://d-nb.info/1045125946/34.

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Mayer, Kerstin [Verfasser]. "Molecular Tetrel and Pentel Element Anions – Productive Source for Intermetalloid Clusters and Materials / Kerstin Mayer." München : Verlag Dr. Hut, 2019. http://d-nb.info/1198543019/34.

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Miura, Noriko, Yoshihiro Asahara, and Iwao Kawabe. "Rare earth element and Sr isotopic study of the Middle Permian limestone-dolostone sequence in Kuzuu area, central Japan: Seawater tetrad sffect and Sr isotopic signatures of seamount-type carbonate rocks." Dept. of Earth and Planetary Sciences, Nagoya University, 2004. http://hdl.handle.net/2237/7643.

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Mol, Adam Artur [Verfasser], Beatrix [Akademischer Betreuer] Süß, and M. Cristina [Akademischer Betreuer] Cardoso. "TetR-binding aptamer as a versatile regulatory element / Adam Artur Mol ; Beatrix Süß, M. Cristina Cardoso." Darmstadt : Universitäts- und Landesbibliothek, 2020. http://d-nb.info/122309491X/34.

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Mol, Adam Artur Verfasser], Beatrix [Akademischer Betreuer] [Süß, and Cristina [Akademischer Betreuer] Cardoso. "TetR-binding aptamer as a versatile regulatory element / Adam Artur Mol ; Beatrix Süß, M. Cristina Cardoso." Darmstadt : Universitäts- und Landesbibliothek, 2020. http://nbn-resolving.de/urn:nbn:de:tuda-tuprints-118455.

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Mitzinger, Stefan Martin Jürgen [Verfasser], and Stefanie [Akademischer Betreuer] Dehnen. "Synthesis and Derivatisation of Hetero-Atomic Zintl Anions and Multi-Metallic Clusters of the Tetrel and Pentel Elements / Stefan Martin Jürgen Mitzinger ; Betreuer: Stefanie Dehnen." Marburg : Philipps-Universität Marburg, 2018. http://d-nb.info/1156461707/34.

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Idrogo, Guevara Ana María. "Análisis de los elementos de la dirección de arte en la película la teta asustada dirigida por Claudia Llosa." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2018. http://tesis.usat.edu.pe/handle/usat/1436.

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La presente investigación estudia los elementos: escenografía, decorado, utilería, vestuario y maquillaje planteados en la dirección artística de la película e identifica cuál es el aporte en su narrativa. Este informe tiene como finalidad destacar la importancia de la dirección de arte, no solo en el ámbito estético, sino en su esfuerzo por despertar emociones y sentimientos en el espectador a través de la imagen.<br>Tesis
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MADDALA, PRANAY RAJ REDDY. "Investigation of Polymer packaging films behavior subjected to tension and tearing." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-15002.

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The course of polymer film functioning has been a crucial concern in the advent of packaging technology. The thesis project aims towards obtaining an understanding of mechanical properties for a class of these materials, namely LDPE and PET. A constitutive understanding of this behavior in the case of LDPE is acquired through incorporating a plastic stress strain relationship in an iterative approach with focus put on the sensitivity of a few parameters by following a simple linear curve-fit technique in a way that the global as well as the local response are predictable. FE-models also developed in this way are validated with experimental data. An inverse analysis testing validity or usefulness of DIC technique in identifying a material model is done and some discussions are drawn towards this area. A relative numerical study with respect to experimentally obtained global response for tearing of these polymers is done through use of a similar material model developed from tensile tests and the challenges faced in this area have been addressed.
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Book chapters on the topic "Elemental tetrad"

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Fässler, Thomas F. "Relationships Between Soluble Zintl Anions, Ligand-Stabilized Cage Compounds, and Intermetalloid Clusters of Tetrel (Si–Pb) and Pentel (P–Bi) Elements." In Zintl Ions. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/430_2010_33.

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Grey, Simon, David Grey, Neil Andrew Gordon, and Jon Purdy. "Using Formal Game Design Methods to Embed Learning Outcomes into Game Mechanics and Avoid Emergent Behaviour." In Learning and Performance Assessment. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0420-8.ch011.

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This paper offers an approach to designing game-based learning experiences inspired by the Mechanics-Dynamics-Aesthetics (MDA) model (Hunicke et al., 2004) and the elemental tetrad model (Schell, 2008) for game design. A case for game based learning as an active and social learning experience is presented including arguments from both teachers and game designers concerning the value of games as learning tools. The MDA model is introduced with a classic game- based example and a non-game based observation of human behaviour demonstrating a negative effect of extrinsic motivators (Pink, 2011) and the need to closely align or embed learning outcomes into game mechanics in order to deliver an effective learning experience. The MDA model will then be applied to create a game based learning experience with the goal of teaching some of the aspects of using source code control to groups of Computer Science students. First, clear aims in terms of learning outcomes for the game are set out. Following the learning outcomes, the iterative design process is explained with careful consideration and reflection on the impact of specific design decisions on the potential learning experience. The reasons those decisions have been made and where there may be conflict between mechanics contributing to learning and mechanics for reasons of gameplay are also discussed. The paper will conclude with an evaluation of results from a trial of computer science students and staff, and the perceived effectiveness of the game at delivering specific learning outcomes, and the approach for game design will be assessed.
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Hota, Bala, Kyle J. Popovich, and Robert A. Weinstein. "Staphylococci." In Oxford Textbook of Medicine. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780199204854.003.070604_update_006.

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Staphylococci are Gram-positive cocci that form clusters, but can occur singly, in pairs, chains, or tetrads. They are classically distinguished from other Gram-positive cocci by presence of catalase, an enzyme that degrades hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). S. aureus is distinguished from other coagulase-negative staphylococci, which are generally less virulent, by the presence of coagulase, an enzyme that coagulates plasma. Many toxins and regulatory elements enhance virulence in staphylococci....
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"Computer Program for Stresses in Solids “TETRAF”." In Finite Element Programs in Structural Engineering and Continuum Mechanics. Elsevier, 1996. http://dx.doi.org/10.1016/b978-1-898563-28-0.50045-1.

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Bastie, Colette, and Florence Rouleux-Bonnin. "DNA Elements Tetris: A Strategy for Gene Correction." In Modern Tools for Genetic Engineering. InTech, 2016. http://dx.doi.org/10.5772/62382.

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Popovich, Kyle J., Robert A. Weinstein, and Bala Hota. "Staphylococci." In Oxford Textbook of Medicine, edited by Christopher P. Conlon. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0108.

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This chapter looks at staphylococci, which are Gram-positive cocci that form clusters, but can occur singly, in pairs, chains, or tetrads. They are classically distinguished from other Gram-positive cocci by presence of catalase, an enzyme that degrades hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). S. aureus is distinguished from other coagulase-negative staphylococci, which are generally less virulent, by the presence of coagulase, an enzyme that coagulates plasma. Many toxins and regulatory elements enhance virulence in staphylococci. Staphylococci are skin commensals. About 20% of adults are persistently colonized by S. aureus, 60% are intermittently colonized, and 20% are never colonized. High-risk groups for S. aureus colonization include infants, insulin-dependent diabetics, intravenous drug users, HIV-infected patients, and renal dialysis patients. Methicillin-resistant Staphylococcus aureus (MRSA) was once predominantly seen in hospitals. However, over the past twenty years the epidemiology of MRSA has significantly changed, with MRSA infections now being observed in community settings.
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Miller, Monica. "Video Games and Indirect Learning." In Advances in Game-Based Learning. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7069-2.ch005.

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As a result of rapid technological advancement, educators are turning to alternative pedagogy to instill valuable knowledge and transferable skills to their pupils. Esports and video games are being examined as a potential avenue. This research, backed by empirical data, explains how the content of particular games can indirectly teach players real-world skills and advanced academic concepts. Five different soft skills (responsibility, communication, teamwork, problem solving, leadership) and two core academic areas (mathematics, language arts) are examined using in-game elements of the following 12 video games/video game franchises as evidence to support claims of video games being a source of indirect education: Neopets; League of Legends; The Elder Scrolls V: Skyrim; Overwatch; Legend of Zelda: Breath of the Wild; Tetris; Portal; Fortnite; Assassin's Creed; World of Warcraft; No Man's Sky; and Spyro.
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Conference papers on the topic "Elemental tetrad"

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Garat, Alcides. "LOCAL GROUPS OF INTERNAL TRANSFORMATIONS ISOMORPHIC TO LOCAL GROUPS OF SPACETIME TETRAD TRANSFORMATIONS." In Eighteenth Lomonosov Conference on Elementary Particle Physics. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789811202339_0091.

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Carter, G., and B. J. Gavin. "THE INTERACTION OF BLOOD ELEMENTS WITH ENDOCARDIAL ENDOTHELIUM DAMAGED BY LACTIC ACID." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643548.

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It has already been demonstrated that ischaemic metabolites, which could diffuse frcm a myocardial infarct in vivo, can cause substantial damage to the endocardial endotheliun and this could predispose to mural thrombosis.To investigate the role of ischaemic metabolites in the pathogenesis of mural thrombosis, lactic acid (pH6.4) was passed through a two-way concentric catheter ligated into the left ventricle of isolated beating rat hearts that were perfused with oxygenated Krebs-Henseleit buffer (KHB) through an aortic cannula. After periods of 1, 2, and 4 hours, the lactic acid was followed for 10 minutes by 10 mis of whole blood from hepa-rinized donor rats. Ventricles were then flushed with KHB, fixed in 2.5% glutaraldehyde and post-fixed in 1% osmium tetrox-ide in cacodylate buffer.Scanning and transmission electron microscopy showed that platelets adhered to exposed basal lamina, microfibrils and collagen but not to intact or damaged endothelial cells. However densely aggregated thrombi only farmed on regions of exposed connective tissue and never on basal lamina. Fibrin, leukocytes and red blood cells were associated with these platelet thrombi. Thus lactic acid and other ischaemic metabolites which could possibly diffuse in vivo from an infarct can contribute to endocardial damage which predisposes to mural thrombosis.
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3

Max, Antonin, Lubos Rehounek, and Tomas Keckstein. "Finite Element Analysis of a CNC Milling Machine Frame." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65613.

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A computer numerically controlled (CNC) milling center is a machine tool for the production of parts with planar, cylindrical and shaped surfaces. The milling center analyzed here includes an open frame — a structure resembling the shape of the letter C. The main cutting motion is performed by a tool clamped in the spindle. Secondary motion can be linear, rotary or a combination of these. Linear movements in three axes are performed by the tool by means of linear motion components (i.e. motion screws and linear guide rails). Rotary motion is performed only when the workpiece is clamped to the rotary table which is mounted on the mounting plate. The basic demands placed on the structure of a milling center include high static and dynamic stiffness during machining processes. This article is primarily aimed at evaluating the response of the frame of the CNC milling machine to the excitation caused by the fluctuation of cutting forces due to step changes in the number of engaged cutting edges. To ensure optimum machining conditions it is important to set suitable cutting conditions for a frame structure with sufficient stiffness. Unsuitable cutting conditions and low stiffness of the machine frame may lead to dimensional inaccuracies of the workpiece, to decreased quality of the machined surfaces or even to the destruction of the tool cutting edges. The aims of the study include the determination of the static deformation, modal analysis to assess the dynamic properties of the frame, and harmonic response analysis, taking into consideration the amplitudes of the loading forces specified in accordance with the recommended operating conditions of the individual tools. Finite element method (FEM) analyses of the frame were performed using MSC.Marc software. Due to the high structural complexity of the computer aided design (CAD) model, the computational model for the FEM analysis had to be simplified. Only the major structural parts and the connecting parts were meshed in detail, combining both structured and unstructured mesh. Geometrically complicated cast parts with large changes of thickness were meshed with linear tetrahedral elements (tetra4) with full integration. Rotationally symmetrical parts, plates and linear guide rails components were meshed with linear brick elements (hex8) with full integration. The overall number of elements was approximately 1,400,000. Tools, including the clamping head and the spindle, are represented by approximate meshes of brick elements. However, a detailed FEM model of the spindle and the tool would be needed for the analysis of the self-excited oscillations during machining, which is the subject of a large number of scientific publications. Increased attention was paid to the incorporation and set-up of the springs between corresponding pairs of nodes of the meshed linear motion components. As a computational model for modal and harmonic response analyses needs to be strictly linear, only linear elastic material properties and linear springs were defined in the analyses presented here.
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4

Shai, Offer, Itay Tehori, Avner Bronfeld, Michael Slavutin, and Uri Ben-Hanan. "Adjustable Tensegrity Robot Based on Assur Graph Principle." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11301.

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The paper introduces a tensegrity robot consisting of cables and actuators. Although this robot has zero degrees of freedom, it is both mobile, and capable of sustaining massive external loads. This outcome is achieved by constantly maintaining the configuration of the robot at a singular position. The underlying theoretical foundation of this work is originated from the concept of Assur Trusses (also known as Assur Groups), which are long known in the field of kinematics. During the last three years, the latter concept has been reformulated by mathematicians from rigidity theory community, and new theorems and algorithms have been developed. Since the topology of the robot is an Assur Truss, the work reported in the paper relies on Assur Trusses theorems that have been developed this year resulting in an efficient algorithm to constantly keep the robot at the singular position. In order to get an efficient characterization of the desired configurations, known techniques from projective geometry were employed. The main idea of the control system of the device, that was also mathematically proved, is that changing the length of only one element, causes the robot to be at the singular position. Therefore, the system measures the force in only one cable, and its length is modified accordingly by the control system. The topology of the device is an Assur Truss — a 3D triad, but the principles introduced in the paper are applicable to any robot whose topology is an Assur Truss, such as: tetrad, pentad, double triad and so forth. The paper includes several photos of the device and the output data of the control system indicating its promising application.
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5

Balakrishnan, Anandh, and Mrinal C. Saha. "Effect of Ultrasound and Strain Rate on Tensile Behavior of Neat Thermoplastic Polyurethane Thin Films." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39197.

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Thermoplastic Polyurethane (TPU) thin films have many applications in engineering and biomedical fields. Examples include moisture sensors, load cells, optical element and biocompatible stens. The TPU is a block copolymer naturally phase segregates into thermodynamically incompatible hard- and soft-segments. The size of the segments and their spatial distribution can significantly affect the microstructure and mechanical properties of the TPU. In this paper, we propose to investigate the effect of ultrasound energy on mechanical properties of TPU thin films fabricated via a solution route utilizing Tetra Hydro Furan (THF) as a solvent. The times of sonication was fixed at 60 minutes whilst all films were fabricated at average thickness of 20+/-5 um. The primary objective of the study was to understand the influence of ultrasound and strain rates on the material microstructure and the resulting mechanical properties. Mechanical tests have been conducted at two different displacement rates, namely 5 and 10 mm/min. Our preliminary results indicate that ultrasound improves the strength of the neat TPU films. We also see that strain hardening is displacement or strain rate dependent. We attribute these results to changes in the hard (H) and soft (S) domain structure. To further understand these microstructural variations, we propose to conduct Differential Scanning Calorimetry (DSC). The data has been interpreted in conjunction with our mechanical test data.
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6

Rasel, Abu, Evan Kimbro, Ram Mohan, and Ajit D. Kelar. "Computational and Experimental Investigation of the Low Velocity Impact Behavior of Nano Engineered E-Glass Fiber Reinforced Composite Laminates." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86923.

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This paper presents computational and experimental investigation of the low velocity impact behavior of nano engineered E-glass fiber reinforced composite laminates. The Tetra Ethyl Orthosilicate (TEOS) chemically engineered glass nanofibers were manufactured using electrospinning technique and were investigated for their potential to improve the interlaminar properties. Plain weave fiberglass prepregs were used for manufacturing ten ply thick laminates. For production of the laminates with electrospinning interface layers the addition of the electrospinning sheets and an additional layer of resin film was used. The fabricated laminates were subjected to low velocity impacts of various energy levels to study the progressive damage and deformation mechanics of fiberglass laminates with and without electrospun nanofibers. The low velocity impact behavior was modeled using the transient dynamic finite element program LSDYNA. It was observed that the simulations results are in good agreement with the experimental results for lower impact energies. In addition, the simulated maximum impact force is smaller than the experimental value (soft response) at each drop height and at higher energy levels, the area under impact force vs time increases when electrospun nanofibers are used in the laminates. The study indicates that, the impact duration increases when electrospun nanofibers are used. Impact duration increases due to an additional damage accumulations in electrospun nanofibers layers. Both computational and experimental investigations clearly indicate that inserting interlaminar electrospun nanofiber layers improves the impact resistance of composites by absorbing additional impact energies.
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7

Sarabi, Soroush, and David B. Bogy. "Viscoelastic Effects on Lubricant Depletion and Recovery Under Heat-Assisted Magnetic Recording (HAMR) Conditions." In ASME 2016 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/isps2016-9578.

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Heat Assisted Magnetic Recording (HAMR) is a developing data-storage technology in which a laser delivery system is integrated to the conventional HDD air bearing slider that carries the read and write transducers. The laser beam heats a small spot of around 20nm size on the storage media up to few hundred degrees Celsius [1]. This heating causes several effects on the lubricant such as temperature gradient, thermocapillary shear stress, viscosity drop, and evaporation followed by its depletion. Conventionally [2–8], the disk lubricant is considered as a Newtonian viscous fluid that can be fully described by a viscosity parameter μ. However, in rapid heating and forcing conditions like HAMR, the time dependent nature of the lubricant becomes very important. Measurements [9] show that under some conditions the lubricant behaves like a Maxwell viscoelastic fluid that can be described by two parameters: viscosity μ and Maxwell relaxation time λ. Itoh et al. [10] show that the viscoelastic behavior becomes even more considerable in the case of sub-10nm material confinement. Both the Maxwell relaxation time and viscosity can be functions of temperature and lubricant thickness in case of ultra-thin film lubrication. Karis [9] measured Maxwell relaxation time as a function of temperature for a variety of lubricants, such as Z-dol and Z-tetraol. Fig. 1 shows the results of these measurements for both Z-dol and Z-tetraol. Maxwell relaxation time plays a vital role in determining the behavior of the material under thermal and mechanical loads. In order to have a proper understanding of the effect of Maxwell relaxation time, we non-dimensionalize this parameter by the timescale of the problem to introduce a non-dimensional Deborah number De = λU/L. So, De is a function of HAMR temperature T, disk speed U, laser spot size L, and lubricant type. For purely-viscous materials both the Maxwell relaxation time and De are zero and for purely-elastic materials, both are infinity. So in the case of viscoelasticity, if De ≪ 1 the viscosity mode is dominant, if De ≫ 1 the elasticity is dominant, and if De ≈ 1 the material behaves viscoelastically. Therefore, De is good measure for the viscoelastic behavior of the material. Some attempts have been made to fit the lubrication theory for viscoelastic materials using perturbation methods. However these methods require that the Deborah Number be small enough [11]. Fig. 2 shows the Deborah Number as a function of laser spot size for different lubricant temperatures. Accordingly, at the target of a HAMR laser spot size of L = 20nm, the Deborah number is very large and therefore, the material behaves less viscous and more elastic. Therefore, the traditional methods of lubrication theory cannot describe the lubricant’s behavior in this limit. Consequently, we developed anew direct Finite Element Method (FEM) approach to simulate the behavior of the linear viscoelastic Maxwell fluid lubricants under HAMR conditions.
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Reports on the topic "Elemental tetrad"

1

Klem, Michael Thomas. The Zintl Chemistry of the Heavy Tetrel Elements. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/806587.

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