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Relevant bibliographies by topics / Kn��k

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Academic literature on the topic 'Kn��k'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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Journal articles on the topic "Kn��k"

1

Carocca, Angel, Rubén Hidalgo, and Rubí Rodríguez. "Orbifolds with signature (0;k,kn−1,kn,kn)." Pacific Journal of Mathematics 263, no. 1 (May 14, 2013): 53–85. http://dx.doi.org/10.2140/pjm.2013.263.53.

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Chen, Bor-Liang, and Kuo-Ching Huang. "On the linear k-arboricity of Kn and Kn,n." Discrete Mathematics 254, no. 1-3 (June 2002): 51–61. http://dx.doi.org/10.1016/s0012-365x(01)00365-x.

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Борисенко, Владимир В., and Vladimir V. Borisenko. "$k$-распавшиеся и $k$-однородные латинские квадраты и их трансверсали." Matematicheskie Voprosy Kriptografii [Mathematical Aspects of Cryptography] 11, no. 3 (September 2020): 5–19. http://dx.doi.org/10.4213/mvk328.

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Рассматриваются $k$-распавшиеся латинские квадраты, т. е. латинские квадраты порядка $kn$, построенные на множестве чисел $\{ {0, \ldots ,kn - 1} \}$, которые при приведении по модулю $n$ дают $( {kn \times kn} )$-матрицу, состоящую из ${k^2}$ латинских квадратов порядка $n$. Если эти ${k^2}$ латинских квадратов одинаковы, то исходный квадрат называется $k$-однородным. Найдены точное число $k$-однородных латинских квадратов и нижняя оценка для числа $k$-распавшихся латинских квадратов. Изучены некоторые свойства трансверсалей $k$-однородных латинских квадратов.

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DIAO, YUANAN, and CLAUS ERNST. "HAMILTONIAN CYCLES AND ROPE LENGTHS OF CONWAY ALGEBRAIC KNOTS." Journal of Knot Theory and Its Ramifications 15, no. 01 (January 2006): 121–42. http://dx.doi.org/10.1142/s0218216506004348.

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For a knot or link K, let L(K) denote the rope length of K and let Cr (K) denote the crossing number of K. An important problem in geometric knot theory concerns the bound on L(K) in terms of Cr (K). It is well-known that there exist positive constants c1, c2 such that for any knot or link K, c1 · ( Cr (K))3/4 ≤ L(K) ≤ c2 · ( Cr (K))3/2. It is also known that for any real number p such that 3/4 ≤ p ≤ 1, there exists a family of knots {Kn} with the property that Cr (Kn) → ∞ ( as n → ∞) such that L(Kn) = O( Cr (Kn)p). However, it is still an open question whether there exists a family of knots {Kn} with the property that Cr (Kn) → ∞ ( as n → ∞) such that L(Kn) = O( Cr (Kn)p) for some 1 < p ≤ 3/2. In this paper, we show that there are many families of prime alternating Conway algebraic knots {Kn} with the property that Cr (Kn) → ∞ ( as n → ∞) such that L(Kn) can grow no faster than linearly with respect to Cr (Kn).

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Chen, Shao-Fei, and Bo-Chao Liu. "K* production in the KN → Kπp reaction." Chinese Physics C 44, no. 3 (March 2020): 034107. http://dx.doi.org/10.1088/1674-1137/44/3/034107.

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Diao, Y., C. Ernst, and M. Thistlethwaite. "The Linear Growth in the Lengths of a Family of Thick Knots." Journal of Knot Theory and Its Ramifications 12, no. 05 (August 2003): 709–15. http://dx.doi.org/10.1142/s0218216503002615.

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For any given knot K, a thick realization K0 of K is a knot of unit thickness which is of the same knot type as K. In this paper, we show that there exists a family of prime knots {Kn} with the property that Cr (Kn)→∞( as n→∞) such that the arc-length of any thick realization of Kn will grow at least linearly with respect to Cr (Kn).

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7

Mogbademu, Adesanmi. "A convergence theorem of multi-step iterative scheme for nonlinear maps." Publications de l'Institut Math?matique (Belgrade) 98, no. 112 (2015): 281–85. http://dx.doi.org/10.2298/pim1512281m.

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Let K be a nonempty closed convex subset of a real Banach space X,T:K ? K a nearly uniformly L-Lipschitzian (with sequence {rn}) asymptotically generalized ?-hemicontractive mapping (with sequence kn ? [1,?), lim n?? kn = 1) such that F(T) = {p?K:Tp=p}. Let {?n}n?0, {?kn}n?0 be real sequences in [0,1] satisfying the conditions: (i) ?n?0 ?n = 1 (ii) limn?? ?n, ?kn = 0, k = 1, 2,..., p?1. For arbitrary x0 ? K, let {xn}n?0 be a multi-step sequence iteratively defined by xn+1=(1??n)xn + ?nTny1n, n?0, ykn = (1 ? ?kn )xn + ?kn Tnyk+1n, k = 1,2,..., p?2 (0.1), yp?1n=(1? ?p?1n)xn + ?p?1n Tnxn, n ? 0, p ? 2. Then, {xn}n?0 converges strongly to p ? F(T). The result proved in this note significantly improve the results of Kim et al. [2].

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Zhong, Ting, Quanwu Mu, and Luming Shen. "Metrical property for GCFϵ expansion with the parameter function ϵ(k) = c(k + 1)." International Journal of Number Theory 11, no. 07 (October 21, 2015): 2065–72. http://dx.doi.org/10.1142/s179304211550089x.

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This paper is concerned with the metric properties of the generalized continued fractions (GCFϵ) with the parameter function ϵ(kn), where kn is the nth partial quotient of the GCFϵ expansion. When -1 < ϵ(kn) ≤ 1, Zhong [Metrical properties for a class of continued fractions with increasing digits, J. Number Theory128 (2008) 1506–1515] obtained the following metrical properties: [Formula: see text] which are entirely unrelated to the choice of ϵ(kn) ∈ (-1, 1]. Here we deal with the case of ϵ(k) = c(k + 1) with constant c ∈ (0, ∞). It is proved that: [Formula: see text] which change with the real c ∈ (0, ∞). Note that [Formula: see text] as c → 0, it indicates that when c → 0, the GCFϵ has the same metrical property as the case of -1 < ϵ(kn) ≤ 1.

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Charoenpanitseri, Wongsakorn. "On(k,kn-k2-2k-1)-Choosability ofn-Vertex Graphs." International Journal of Mathematics and Mathematical Sciences 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/690517.

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A(k,t)-list assignmentLof a graphGis a mapping which assigns a set of sizekto each vertexvofGand|⋃v∈V(G)‍L(v)|=t. A graphGis(k,t)-choosable ifGhas a proper coloringfsuch thatf(v)∈L(v)for each(k,t)-list assignmentL. In 2011, Charoenpanitseri et al. gave a characterization of(k,t)-choosability ofn-vertex graphs whent≥kn-k2-2k+1and left open problems whent≤kn-k2-2k. Recently, Ruksasakchai and Nakprasit obtain the results whent=kn-k2-2k. In this paper, we extend the results to caset=kn-k2-2k-1.

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Ferris, Daniel P., and Claire T. Farley. "Interaction of leg stiffness and surface stiffness during human hopping." Journal of Applied Physiology 82, no. 1 (January 1, 1997): 15–22. http://dx.doi.org/10.1152/jappl.1997.82.1.15.

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Ferris, Daniel P., and Claire T. Farley. Interaction of leg stiffness and surface stiffness during human hopping. J. Appl. Physiol. 82(1): 15–22, 1997.—When mammals run, the overall musculoskeletal system behaves as a single linear “leg spring.” We used force platform and kinematic measurements to determine whether leg spring stiffness ( k leg) is adjusted to accommodate changes in surface stiffness ( k surf) when humans hop in place, a good experimental model for examining adjustments to k leg in bouncing gaits. We found that k leg was greatly increased to accommodate surfaces of lower stiffnesses. The series combination of k leg and k surf[total stiffness ( k tot)] was independent of k surf at a given hopping frequency. For example, when humans hopped at a frequency of 2 Hz, they tripled their k leg on the least stiff surface ( k surf = 26.1 kN/m; k leg = 53.3 kN/m) compared with the most stiff surface ( k surf = 35,000 kN/m; k leg = 17.8 kN/m). Values for k tot were not significantly different on the least stiff surface (16.7 kN/m) and the most stiff surface (17.8 kN/m). Because of the k leg adjustment, many aspects of the hopping mechanics (e.g., ground-contact time and center of mass vertical displacement) remained remarkably similar despite a >1,000-fold change in k surf. This study provides insight into how k leg adjustments can allow similar locomotion mechanics on the variety of terrains encountered by runners in the natural world.

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Dissertations / Theses on the topic "Kn��k"

1

Pan, Yunlan. "Investigation of a dynamic k-d Search Skip List requiring [Theta](kn) space." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0008/MQ30013.pdf.

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Waroquet, Anne. "Couches-minces dans le système K-Nb-O : croissance épitaxiale et nanostructuration par PLD de phases pérovskite, TTB et lamellaires." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S143/document.

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L'objectif de ce travail était l'élaboration par ablation laser pulsé (PLD) et la caractérisation de couches minces d'oxydes dans le système K-Nb-O, et plus précisément d'une phase de structure bronze de tungstène quadratique (TTB) sous forme de nanorods, potentiellement intéressante dans le contexte de la recherche de nouveaux piézoélectriques sans plomb. Malgré une forte compétition de croissance entre les différentes phases, l'étude approfondie des conditions de dépôt a montré la possibilité d'obtenir les phases KNb3O8, K4Nb6O17, K6Nb10,88O30 (TTB) et KNbO3, en films minces après une phase d’optimisation essentielle. Nous avons déterminé l'influence des conditions de dépôt sur la formation et la nanostructuration de ces composés en couches minces. En particulier, il a été démontré que la température et la composition de la cible PLD avaient une forte influence sur la croissance de la phase de structure TTB. Une étude plus approfondie de ces phases a révélé que toutes avaient une morphologie spécifique liée à leur structure anisotrope, que nous avons pu contrôler par la croissance épitaxiale sur les substrats SrTiO3 orienté (100) et (110). L'existence d'une activité piézoélectrique dans des couches minces de la phase TTB, mise en évidence par PFM, lui confère un intérêt certain. Cette phase TTB a également été obtenue dans le système Na-K-Nb-O, très connu pour ses propriétés piézoélectriques et ferroélectriques, ouvrant la voie sur de nouvelles recherches
The purpose of this work was the elaboration by pulsed laser deposition (PLD) and the characterization of thin films of oxides in the K-Nb-O system, and more precisely that of a tetragonal tungsten bronze phase (TTB) as nanorods, of potential interest as a new lead free piezoelectric. In spite of a strong growth competition between the different phases, the detailed study of the deposition conditions showed that it is possible to obtain KNb3O8, K4Nb6O17, K6Nb10,88O30 (TTB ) and KNbO3 in thin films form after an important optimization step. We have determined the influence of these deposition conditions on the formation and the nanostructuration of these compounds as thin films. In particular, it was shown that the temperature and the PLD target’s composition has a strong influence on the growth of the TTB structure. A further study of these phases revealed that all have a specific morphology related to their anisotropic structure, that we have controlled by the epitaxial growth on the (100) and (110) SrTiO3 substrates. The existence of a piezoelectric activity in the TTB thin films, evidenced by PFM, gives a great interest to this phase. This TTB phase was also obtained in the Na-K-Nb-O system, well known for its piezoelectric and ferroelectric properties, opening the way to new research

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Kelly, Caleb, and n/a. "Cracked and Broken Media in 20th and 21st Century Music and Sound." University of Canberra. Creative Communication, 2007. http://erl.canberra.edu.au./public/adt-AUC20070601.135617.

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From the mid 20th century into the 21st, artists and musicians manipulated, cracked and broke audio media technologies to produce novel, unique and indeterminate sounds and performances. Artists such as John Cage, Nam June Paik, Milian Kn��k, Christian Marclay, Yasunao Tone, Oval and Otomo Yoshihide pulled apart the technologies of music playback, both the playback devices � phonographs and CD players � and the recorded media � vinyl records and Compact Discs. Based in the sound expansion of the 20th century musical avant garde, this practice connects the interdisciplinary Fluxus movement with late 20th century sound art and experimental electronic music. Cracked and broken media techniques play a significant role in 20th century music and sound, and continue to be productive into the 21st. The primary contribution of this thesis is to provide a novel and detailed historical account of these practices. In addition it considers theoretical approaches to this work. After considering approaches through critiques of recording media, and concepts of noise, this thesis proposes novel theorisations focusing on materiality and the everyday. Ultimately it proposes that these practices can be read as precursors to contemporary new media, as music and sound art cracked open the fixed structures of �old media� technologies for their own creative purposes.

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Dometrius, Christopher. "Relationship between symmetric and skew-symmetric bilinear forms on V=kn and involutions of SL(n, k) and SO(n, k, beta)." 2003. http://www.lib.ncsu.edu/theses/available/etd-07152003-144821/unrestricted/etd.pdf.

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Books on the topic "Kn��k"

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Sukharev, Iuriĭ Nikolaevich. Materialy k istorii russkogo nauchnogo zarubezhʹi︠a︡ v 2 kn. Moskva: Redakt︠s︡ii︠a︡ alʹmanakha "Rossiĭskiĭ arkhiv", 2002.

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Ot Elʹt︠s︡ina k . . .?: Khronika taĭnoĭ borʹby v 2 kn. Moskva: OLMA-PRESS, 1999.

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3

Pozamantir, Raisa Dmitrievna. Kaliĭngrad-Korolev: K kosmicheskim vysotam -- iz glubiny vekov, Kn. 1. 2nd ed. Moskva: Russkai︠a︡ istorii︠a︡, 2003.

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Rodstvennye svi︠a︡zi semeĭstva Razumovskikh, Kn. 1: Rod i potomstvo K. G. Razumovskogo. Rodoslovnai︠a︡ rospisʹ. Moskva: IRIS", 2007.

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5

Rahmat, Bastian, ed. Penyalahgunaan keadaan (misbruik van omstandigheden) sebagai alasan (baru) untuk pembatalan perjanjian: Berbagai perkembangan hukum di Belanda dan Indonesia : dilengkapi dengan Peraturan Mahkamah Agung no. 1 tahun 2008 tentang prosedur mediasi di pengadilan : tambahan khusus analisis Setiawan, S.H. tentang undue influence (bovagarrest H-HR, 11 Januari 1957, NJ. 1959 no. 37), analisis Prof. Kusumah Atmadja tentang standar kontrak dan klausula pengecualian pertanggungjawaban dalam Putusan Mahkamah Agung, tanggal 26 Januari 1987, no. 3416 K/PDT/1985, analisis David M.I. Tobing, S.H., M. Kn. tentang perlindungan hukum nasabah, terkait structured product perbankan. 2nd ed. Yogyakarta: Liberty, 2010.

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S, Koroleva N. Korolev SP Father. In the 3-book. Kn. 3. To the 100 anniversary of the birth / Korolev S.P. Otets. V 3-kh kn. Kn. 3. K 100-letiyu so dnya rozhdeniya. Nauka-M, 2007.

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Otrazhenii︠a︡ muzykalʹnogo teatra v 2 kn.: Sbornik stateĭ i materialov k i︠u︡bilei︠u︡ L. G. Danʹko. Sankt Peterburg: Kanon, 2001.

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Istochniki sredstv k sushchestvovanii︠u︡ naselenii︠a︡ Respubliki Tatarstan: Statisticheskiĭ sbornik po itogam Vserossiĭskoĭ perepisi naselenii︠a︡ 20, T. 5 Kn. 1: Spravochnye materialy. Kazanʹ: Goskomstat Respubliki Tatarstan, 2005.

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9

Rodriguez, Michael. Wоrm Farming еѕѕеntіаl Bооk Guіdе: Evеrуthіng You Nееd Tо Knоw аbоut Wоrm Fаrmіng Includes ѕоіl Nutrіtіоn, lіghtеnіng, еԛuірmеntѕ аnd Water Rеԛuіrеmеnt. Independently Published, 2020.

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Book chapters on the topic "Kn��k"

1

Apostolico, A. "On-line String Searching." In Pattern Matching Algorithms. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195113679.003.0006.

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In the previous two chapters, we have examined various serial and parallel methods to perform exact string searching in a number of operations proportional to the total length of the input. Even though such a performance is optimal, our treatment of exact searches cannot be considered exhausted yet: in many applications, searches for different, a-priorily unknown patterns are performed on a same text or group of texts. It seems natural to ask whether these cases can be handled better than by plain reiteration of the procedures studied so far. As an analogy, consider the classical problem of searching for a given item in a table with n entries. In general, n comparisons are both necessary and sufficient for this task. If we wanted to perform k such searches, however, it is no longer clear that we need kn comparisons. Our table can be sorted once and for all at a cost of O(n log n) comparisons, after which binary search can be used. For sufficiently large k, this approach outperforms that of the k independent searches. In this chapter, we shall see that the philosophy subtending binary search can be fruitfully applied to string searching. Specifically, the text can be pre-processed once and for all in such a way that any query concerning whether or not a pattern occurs in the text can be answered in time proportional to the length of the pattern. It will also be possible to locate all the occurrences of the pattern in the text at an additional cost proportional to the total number of such occurrences. We call this type of search on-line, to refer to the fact that as soon as we finish reading the pattern we can decide whether or not it occurs in our text. As it turns out, the auxiliary structures used to achieve this goal are well suited to a host of other applications. There are several, essentially equivalent digital structures supporting efficient on-line string searching. Here, we base our discussion on a variant known as suffix tree. It is instructive to discuss first a simplified version of suffix trees, which we call expanded suffix tree.

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"A.C. Petty, G.L. Daniels and P. Tippett, Vox Sang, 66, 216-224 (1994). 11. K.E. Coyne, S.E. Hall, E.S. Thompson, M.A. Arce, T. Kinoshita, T. Fujita, D.J. Anstee, W. Rosse and D.M. Lublin, J. Immun. 149. 2906-2913 (1992). 12. A.C. Petty, G.L. Daniels, D.J. Anstee and P. Tippett, Vox Sang., 65, 309-315 (1993). 13. M.J. Telen, N. Rao, E.S. Thompson and D.M. Lublin, (abs) Transfusion, 32, suppl 47S (1992). 14. G. Daniels, Vox Sang., 56, 205-211 (1989). 15. M.J. Telen, in Blood Groups:Ch/Rq. Kn/McC/Yk, Cromer. J.M. Moulds and B. Laird-Fryer, eds. American Association of Blood Banks, Bethesda MD, (1992) pp. 45-63. 16. D.M. Lublin, E.S. Thompson, A.M. Green, C. Levene and M.J. Telen, J. Clin. Invest., 87, 1945-1952 (1991). 17. D.M. Lublin, G. Mallinson, M.E. Reid, J. Poole, E.S. Thompson, B.R. Ferdman, M.J. Telen, D.J. Anstee and M.J.A. Tanner, (abs) Transfusion, 32, suppl 47S (1992). 18. P.D. Issitt, Transf. Med. Rev., 3, 1-12 (1989). 19. C. Lomas, W. Grassman, D. Ford, J. Watt, A. Gooch, J. Jones, M. Beolet, D. Stern, M. Wallace and P. Tippett, Transfusion in press. 20. P. Agre and J-P. Cartron, Blood, 78, 551-563 (1991). 21. J-P. Cartron and P. Agre, Seminars Haemat., 30, 193-208 (1993). 22. D.J. Anstee and M.J.A. Tanner, in Baillieres’s Clinical Haematology. M.J.A. Tanner and D.J. Anstee, eds. Bailliere Tindall, London (1993) pp. 401-422. 23. N.D. Avent, K. Ridgwell, W.J. Mawby, M.J.A. Tanner, D.J. Anstee and B. Kumpel, Biochem. J., 256 1043-1046 (1988). 24. C. Bloy, D. Blanchard, W. Dahr, K. Beyreuther, C. Salmon and J-P. Cartron, Blood, 72, 661-666 (1988). 25. A.M. Saboori, B.L. Smith and P. Agre, Proc. Natl. Acad. Sci. USA, 85, 4042-4045 (1988). 26. N.D. Avent, K. Ridgwell, M.J.A. Tanner and D.J. Anstee, Biochem. J., 271.821-825 (1990). 27. B. Cherif-Zahar, C. Bloy, C. Le Van Kim, D. Blanchard, P. Bailly, P. Hermand, C. Salmon, J-P. Cartron, Y. Colin, Proc. Natl. Acad. Sci. USA, 87, 6243-6247 (1990). 28. I. Mouro, Y. Colin, B. Cherif-Zahar, J-P. Cartron and C. Le Van Kim, Nature Genet., 5, 62-65 (1993). 29. K. Ridgwell, N.K. Spurr, B. Laguda, C. MacGeoch, N.D. Avent and M.J.A. Tanner, Biochem. J., 287, 223-228 (1992). 30. G. Mallinson, D.J. Anstee, N.D. Avent, K. Ridgwell, M.J.A. Tanner, G.L. Daniels, P. Tippett and A.E.G. von dem Borne, Transfusion, 30, 222-225 (1990)." In Transfusion Immunology and Medicine, 199. CRC Press, 1995. http://dx.doi.org/10.1201/9781482273441-17.

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Conference papers on the topic "Kn��k"

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Hidayah, Nur, and Tri Atmojo Kusmayadi. "k-Metric Dimension of Generalized Fan Graph and Cm ∗2 Kn Graph." In SEMANTIK Conference of Mathematics Education (SEMANTIK 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/assehr.k.200827.113.

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Doté, A., T. Hyodo, and W. Weise. "VARIATIONAL CALCULATION OF K-pp WITH CHIRAL SU(3)-BASED $\bar KN$ INTERACTION." In Proceedings of the Sendai International Symposium. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814277860_0044.

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Wu, X., and J. Rokne. "An O(KN lg N) algorithm for optimum K-level quantization on histograms of N points." In the seventeenth annual ACM conference. New York, New York, USA: ACM Press, 1989. http://dx.doi.org/10.1145/75427.75472.

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Jiang, Pei-Xue, Rui-Na Xu, and Chen-Ru Zhao. "Flow Characteristics and Convection Heat Transfer in Microporous Media." In ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASMEDC, 2008. http://dx.doi.org/10.1115/mnht2008-52049.

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The flow characteristics of water and air in micro porous tubes with average diameters of 200 μm ∼ 10 μm were studied experimentally and numerically. The results showed that compressibility significantly influence the air flow in porous media with the particle diameters of 200 μm ∼ 10 μm, which increases the friction factor in porous media. Rarefaction effects occur in air flows in the microporous media with particle diameters less than 90 μm. New correlations for K and F were proposed with consideration of Kn. The numerically predicted friction factors for the slip-flow regime in the micro-porous media with 90 μm ∼ 10 μm diameter particles were less than the known correlation and close to the experimental data. The internal convection heat transfer coefficients between particles and fluid in the micro porous media were determined experimentally and numerically. The experimental data for the micro porous media with particle diameters of 20 and 10 μm are much lower than the previously published results. A new correlation for Nusslet number was proposed with consideration of the influence of Kn. Numerical calculation with consideration of slip-flow and temperature jump in micro porous media can properly simulate internal convection heat transfer.

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Shi, Yu, and Rolf D. Reitz. "Assessment of Multi-Objective Genetic Algorithms With Different Niching Strategies and Regression Methods for Engine Optimization and Design." In ASME 2009 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ices2009-76015.

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In previous study [1] the Non-dominated Sorting Genetic Algorithm II (NSGA II) [2] performed better than other popular Multi-Objective Genetic Algorithms (MOGA) in engine optimization that sought optimal combinations of the piston bowl geometry, spray targeting, and swirl ratio. NSGA II is further studied in this paper using different niching strategies that are applied to the objective-space and design-space, which diversify the optimal objectives and design parameters accordingly. Convergence and diversity metrics are defined to assess the performance of NSGA II using different niching strategies. It was found that use of the design niching achieved more diversified results with respect to design parameters, as expected. Regression was then conducted on the design datasets that were obtained from the optimizations with two niching strategies. Four regression methods, including K-nearest neighbors (KN), Kriging (KR), Neural Networks (NN), and Radial Basis Functions (RBF), were compared. The results showed that the dataset obtained from optimization with objective niching provided a more fitted learning space for the regression methods. The KN, KR, outperformed the other two methods with respect to the prediction accuracy. Furthermore, a log transformation to the objective-space improved the prediction accuracy for the KN, KR, and NN methods but not the RBF method. The results indicate that it is appropriate to use a regression tool to partly replace the actual CFD evaluation tool in engine optimization designs using the genetic algorithm. This hybrid mode saves computational resources (processors) without losing optimal accuracy. A Design of Experiment (DoE) method (the Optimal Latin Hypercube method) was also used to generate a dataset for the regression processes. However, the predicted results were much less reliable than results that were learned using the dynamically increasing datasets from the NSGA II generations. Applying the dynamical learning strategy during the optimization processes allows computationally expensive CFD evaluations to be partly replaced by evaluations using the regression techniques. The present study demonstrates the feasibility of applying the hybrid mode to engine optimization problems, and the conclusions can also extend to other optimization studies (numerical or experimental) that feature time-consuming evaluations and have highly non-linear objective-spaces.

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Medziti, Mirhat, and Daia Zwicky. "Anchorages of stirrups under transverse tension in concrete - development of a design model." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0576.

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<p>According to Swiss code SIA 262 "Concrete structures", stirrups of reinforced concrete beams must "surround the tensile longitudinal reinforcement" and must "be anchored to mobilize the static height of internal forces". For existing concrete structures, Swiss code SIA 269/2 provides stirrup detailing requirements while limiting these directives for stirrup anchorage to the compression zone. In zones of negative bending, these requirements are often not satisfied for execution reasons. This question is addressed in a largely experimental Ra&D project. Anchorage tests were performed and analyzed, with a total of 144 tests on 9 concrete beams. These underwent a longitudinal tensile force up to 1’000 kN to simulate transverse cracking at stirrup anchorages in negative flexure zones. The study parameters are crack width (0, 0.4 and 0.9 mm), stirrup diameter (10 and 14 mm), bar ribbing (smooth and ribbed) and hook angle (90°, 135°, 180° and straight bars). A design model based on the "tension chord model" (TCM) developed at ETH Zurich is proposed. This simple and practical design model has proved ist effectiveness to consider bond effects. Reduction factors for bar diameter (k<sub>Ø</sub>), relative bar ribbing (k<sub>fR</sub>), hook effect (k<sub>θ</sub>) and crack width (k<sub>w</sub>) were taken into account for calibration. Results of analytical calculations are coherent with experimental tests.</p>

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Bhargava, Nikhil, and Brian C. Williams. "Faster Dynamic Controllability Checking in Temporal Networks with Integer Bounds." In Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. California: International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/765.

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Simple Temporal Networks with Uncertainty (STNUs) provide a useful formalism with which to reason about events and the temporal constraints that apply to them. STNUs are in particular notable because they facilitate reasoning over stochastic, or uncontrollable, actions and their corresponding durations. To evaluate the feasibility of a set of constraints associated with an STNU, one checks the network's \textit{dynamic controllability}, which determines whether an adaptive schedule can be constructed on-the-fly. Our work improves the runtime of checking the dynamic controllability of STNUs with integer bounds to O(min(mn, m sqrt(n) log N) + km + k^2n + kn log n). Our approach pre-processes the STNU using an existing O(n^3) dynamic controllability checking algorithm and provides tighter bounds on its runtime. This makes our work easily adaptable to other algorithms that rely on checking variants of dynamic controllability.

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Sharma, Vyas Mani, Debanjan Maity, Vikranth Racherla, and Surjya Kanta Pal. "Friction Sintering of Copper Powder Using a New Rapid, Cost Effective and Energy Efficient Process." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6684.

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Dendritic electrolytic copper powder was sintered using a newly developed friction sintering process. Green copper pellets of 14 mm height and 16 mm diameter were prepared at room temperature with 5-ton load and 60 seconds holding time. The pellets were sintered using a newly developed rapid, cost-effective, energy efficient, green friction sintering process that allows for easy and quick removal of sintered products. An aluminum plate of 14 mm thickness and 16.1 mm diameter through hole was used to hold green pellets during sintering. Frictional heat and pressure were applied on a top plate through a rotating 18 mm diameter, flat shoulder, WC tool. Sintering was performed at 12 kN axial load and 800 rpm tool rotational speed. Sintering temperatures were measured using K-type thermocouples. SEM (scanning electron microscope) images of fractured surfaces for sintered pellets show neck formation between copper particles. The neck formation is approximately uniform throughout the depth. This is in-line with hardness results along the thickness of the pellet. The process holds promise particularly for solid-state sintering of metal based powders.

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Lei, Shu-Ye. "Experimental Study of Water and Air Based Permeabilities of Washed and Screened Sands." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79667.

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The permeability of narrow screened washed sands of granularity 100–450 μm was measured experimentally using water and air to investigate the effect of slip on the gas based permeability. The experimental data show that the air based permeability of the unconsolidated particle media is not proportional to the square of the mean particle diameter and that slip significantly affects the air based permeability measurements for unconsolidated porous media. The velocity slip effect is significant even for Kn<10−3. Slip effects were not found in the water based permeability measurements with the same sand samples. All of the experimental data lay around the curve k/d=0.283φ2.67 within ± 4.1%. However, the water based permeability was not below all of the air based permeability as expected. The air based permeability eliminated slip effects was about 59 % lower than that water based one, much larger than possible measurement. The experimental results showed that the standard air viscosity value in the handbooks was not its actual, the actual air viscosity may be over twice of that in handbooks.

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Ebert-Uphoff, Imme, and Gregory S. Chirikjian. "Discretely Actuated Manipulator Workspace Generation by Closed-Form Convolution." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1162.

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Abstract We discuss the determination of workspaces of discretely actuated manipulators using convolution of real-valued functions on the Special Euclidean Group. Each workspace is described in terms of a density function that provides for any unit taskspace volume of the workspace the number of reachable frames therein. A manipulator consisting of n discrete actuators each with K states can reach Kn frames in space. Given this exponential growth, brute force representation of discrete manipulator workspaces is not feasible in the highly actuated case. However, if the manipulator is of macroscopically-serial architecture, the workspace can be generated by the following procedure: (1) partition the manipulator into segments; (2) approximate the workspace of each segment as a continuous density function on a compact subset of the Special Euclidean Group; (3) approximate the whole workspace as an n-fold convolution of these densities. We represent density functions as finite Hermite-Fourier Series and show for the planar case how the n-fold convolution can be performed in closed form requiring O(n) computation time. If all segments are identical the computation time reduces to O(logn).

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