Готові списки джерел за темами / Ascent sequences

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Добірка наукової літератури з теми "Ascent sequences"

Автор: Grafiati

Опубліковано: 10 березня 2023

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Статті в журналах з теми "Ascent sequences"

Mansour, Toufik, and Mark Shattuck. "Ascent sequences and Fibonacci numbers." Filomat 29, no. 4 (2015): 703–12. http://dx.doi.org/10.2298/fil1504703m.

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An ascent sequence is one consisting of non-negative integers in which the size of each letter is restricted by the number of ascents preceding it in the sequence. Ascent sequences have recently been shown to be related to (2+2)-free posets and a variety of other combinatorial structures. Let Fn denote the Fibonacci sequence given by the recurrence Fn = Fn-1 + Fn-2 if n ? 2, with F0 = 0 and F1 = 1. In this paper, we draw connections between ascent sequences and the Fibonacci numbers by showing that several pattern-avoidance classes of ascent sequences are enumerated by either Fn+1 or F2n-1. We make use of both algebraic and combinatorial methods to establish our results. In one of the apparently more difficult cases, we make use of the kernel method to solve a functional equation and thus determine the distribution of some statistics on the avoidance class in question. In two other cases, we adapt the scanning-elements algorithm, a technique which has been used in the enumeration of certain classes of pattern-avoiding permutations, to the comparable problem concerning pattern-avoiding ascent sequences.

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Callan, David, Toufik Mansour, and Mark Shattuck. "Restricted ascent sequences and Catalan numbers." Applicable Analysis and Discrete Mathematics 8, no. 2 (2014): 288–303. http://dx.doi.org/10.2298/aadm140626007c.

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In this paper, we identify all members of the (4,4)-Wilf equivalence class for ascent sequences corresponding to the Catalan number Cn = 1 / n+1 (2n/n). This extends recent work concerning avoidance of a single pattern and provides apparently new combinatorial interpretations for Cn. In several cases, the subset of the class consisting of those members having exactly m ascents is given by the Narayana number Nn;m+1 = 1 / n (n/m+1)(n/m). We conclude by considering a further refinement in the case of avoiding 021.

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Ying, Changtian, and Jiong Yu. "An operator on ascent sequences." Wuhan University Journal of Natural Sciences 19, no. 4 (August 2014): 289–94. http://dx.doi.org/10.1007/s11859-014-1015-3.

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Kitaev, Sergey, and Jeffrey B. Remmel. "A note on $p$-ascent sequences." Journal of Combinatorics 8, no. 3 (2017): 487–506. http://dx.doi.org/10.4310/joc.2017.v8.n3.a5.

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Mansour, Toufik, and Mark Shattuck. "Some enumerative results related to ascent sequences." Discrete Mathematics 315-316 (February 2014): 29–41. http://dx.doi.org/10.1016/j.disc.2013.10.006.

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Yan, Sherry H. F. "Ascent sequences and 3-nonnesting set partitions." European Journal of Combinatorics 39 (July 2014): 80–94. http://dx.doi.org/10.1016/j.ejc.2013.12.007.

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Lin, Zhicong, and Shishuo Fu. "On 12̲0-avoiding inversion and ascent sequences." European Journal of Combinatorics 93 (March 2021): 103282. http://dx.doi.org/10.1016/j.ejc.2020.103282.

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Bényi, Beáta, Anders Claesson, and Mark Dukes. "Weak ascent sequences and related combinatorial structures." European Journal of Combinatorics 108 (February 2023): 103633. http://dx.doi.org/10.1016/j.ejc.2022.103633.

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Yan, Sherry H. F. "Bijections for inversion sequences, ascent sequences and 3-nonnesting set partitions." Applied Mathematics and Computation 325 (May 2018): 24–30. http://dx.doi.org/10.1016/j.amc.2017.12.021.

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Todorčević, Stevo, and Víctor Torres Pérez. "Rado's Conjecture and Ascent Paths of Square Sequences." Mathematical Logic Quarterly 60, no. 1-2 (February 2014): 84–90. http://dx.doi.org/10.1002/malq.201300006.

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Дисертації з теми "Ascent sequences"

Cerbai, Giulio. "Sorting permutations with pattern-avoiding machines." Doctoral thesis, 2021. http://hdl.handle.net/2158/1235854.

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In this work of thesis we introduce and study a new family of sorting devices, which we call pattern-avoiding machines. They consist of two stacks in series, equipped with a greedy procedure. On both stacks we impose a static constraint in terms of pattern containment: reading the content from top to bottom, the first stack is not allowed to contain occurrences of a given pattern, whereas the second one is not allowed to contain occurrences of 21. By analyzing the behavior of pattern-avoding machines, we aim to gain a better understanding of the problem of sorting permutations with two consecutive stacks, which is currently one of the most challenging open problems in combinatorics.

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Книги з теми "Ascent sequences"

Thompson, William R., and Leila Zakhirova. The Leadership Long Cycle Framework. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190699680.003.0002.

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In this chapter, we lay out the leadership long cycle theory as our framework for assessing systemic leadership and then modify it. This revised framework is then applied to the political–economic evolution of the past one thousand years to identify the factors underlying the rise and fall of a sequence of system leaders and to examine the fairly strong evidence for the linkage of energy transitions and technological leadership. We find that it is difficult to imagine the ascent of the last three system leaders (the Netherlands, Britain, and the United States) in a situation with significantly different energy foundations. In other words, had there been no peat, coal, or petroleum/electricity, respectively, these episodes of systemic leadership would have been far less likely to have occurred.

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Thompson, William R., and Leila Zakhirova. Racing to the Top. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190699680.001.0001.

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Over the past two millennia, one state has tended to lead as the foremost producer of energy and new technology. While it has not been fully recognized, these leads have become increasingly reliant on energy transitions that make new technological innovations relatively inexpensive. Since the edge of the incumbent system leader (the United States) appears to be eroding, the question is what might come next. As carbon-based fuels become scarcer and/or more damaging, new sources of energy will be needed. Renewable energy will be one of those sources, but it remains unclear whether a renewable regime can be constructed to replace the carbon regime and how long such a transition might take. In the absence of a new energy foundation, there is less reason to anticipate a change in systemic leadership in this century. One might also anticipate less likelihood of a successful response to global warming in the absence of global leadership. But these expectations assume that the energy–technology nexus is fundamental to the ascent of a new system leader. Rather than assume such a proposition, it is better to demonstrate its historical evolution since the fall of Rome by examining a sequence of state efforts to overcome the constraints of an agrarian political economy operating within the context of a solar energy regime. The story stretches from first-millennium China through the Italian city-states and Portugal to the Netherlands, Britain, and the United States. Once the historical foundation is laid, we then evaluate current U.S. and Chinese efforts to reform their energy foundations as part of a bid for future systemic leadership.

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Частини книг з теми "Ascent sequences"

B. Keith, Stanley, Jan C. Rasmussen, and Volker Spieth. "Generation of Mud Volcanic Systems Sourced in Dehydrated Serpentospheric Mantle: A ‘Deep-to-Seep’ Model for the Zechstein Salines-Kupferschiefer Cu-Ag Deposits." In Soil Science - Emerging Technologies, Global Perspectives and Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105689.

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Mud volcanism can provide a mechanism for hot hydrothermal muds and brines to ascend from dehydrated, serpentinized peridotite at the mantle-crust contact (Moho). Such mud volcanism may have occurred on a regional scale across northern Europe when high to low density brines erupted as metalliferous, hot, hydrothermal, hydrocarbon-rich mud slurries. These mud-brines were delivered to the Permo-Triassic unconformity in a shallow Zechstein sea during the Pangea breakup through a series of deep-seated conduits that connected the serpentosphere to the Zechstein unconformity. A three-stage, hot, hydrothermal, mud volcanic model can explain the Kupferschiefer-Zechstein-Rote Fäule sequence of polymetallic, hydrocarbon, and saline mineralization as a consequence of a three-stage, dehydration sequence of deep serpentospheric uppermost mantle. Dehydration products of mantle-heated serpentinite were produced in three sequential stages: (1) lizardite to antigorite, (2) antigorite to chlorite-harzburgite, and (3) chlorite-harzburgite to garnet peridotite. The dehydration of serpentine correlates to three stages of Zechstein-Kupferschiefer mineralization: (1) Weissliegend-Kupferschiefer Cu-Ag-carbonaceous shale and silica sand deposits, to (2) Zechstein saline deposits, to (3) Rote Fäule hematite-Au-REE-U cross-cutting metallization.

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Holliday, Christopher. "DreamWorks Animation, Metalepsis and Diegetic Deconstruction." In The Computer-Animated Film, 187–204. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474427883.003.0010.

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Chapter Nine applies a framework drawn from Gérard Genette’s (1983) notion of “metalepsis” (recently recovered within contemporary animation studies) to explain the behaviour of computer-animated film characters who freely ascend from the fictional world into the surrounding promotional spaces. Although animation has a long tradition of deconstruction and self-reflexive practices, this chapter offers new space to consider how the seamless worlds of computer-animated films can equally be conceptualised according to a deconstructive comedy of metalepsis. This chapter argues that computer-animated film characters are able to abruptly intrude into company logos, corporate signatures, credits sequences and even features of film form. It maps such repeating comic devices onto wider historical developments in studio signification, digitally-assisted logo design and the promotional strategies of contemporary Hollywood cinema. This chapter also affords the specific opportunity to focus on the cycle of feature-length computer-animated films produced by the Dreamworks Animation studio, which exhibit an unprecedented and widely-operational mingling of promotional space with the animated activity of its digital characters.

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Тези доповідей конференцій з теми "Ascent sequences"

Jae Hee Park, Hae Chul Choi, and Seong Dae Kim. "Bayesian face detection in an image sequence using face probability gradient ascent." In rnational Conference on Image Processing. IEEE, 2005. http://dx.doi.org/10.1109/icip.2005.1530063.

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Weber, Jan, and Markus König. "Strategies for Rule-Based Generated Assembly Sequences in Large-Scale Plant Construction." In ASCE International Conference on Computing in Civil Engineering 2021. Reston, VA: American Society of Civil Engineers, 2022. http://dx.doi.org/10.1061/9780784483893.081.

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Tanasković, Marija. "REGGIO EMILIA APPROACH – THE POSSIBILITY OF INTEGRATION IN PRESCHOOL MUSIC EDUCATION." In SCIENCE AND TEACHING IN EDUCATIONAL CONTEXT. FACULTY OF EDUCATION IN UŽICE, UNIVERSITY OF KRAGUJEVAC, 2020. http://dx.doi.org/10.46793/stec20.407t.

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The essence of the educational process is precisely in providing favorable conditions, as well as encouraging and supporting the optimal development of children. It should contain a certain sequence of operations and contents to accelerate and enhance development, but at the same time to be flexible, adaptable and open to children’s needs, interests and opportunities. Preschool education is the first, the most important step in forming a relationship to the general culture of an environment, to music and art in general. Accordingly, an important goal in planning any music program for children is to recognize their interests and attitudes toward different musical activities. One of the goals of Basis of the Program – Years of Ascent, for children to develop dispositions for lifelong learning such as openness, curiosity, resilience, reflexivity, perseverance, self-confidence and a positive personal and social identity, is similar to the goal of Reggio Emilia’s approach in which children are viewed as active authors of their own development, i.e. that they will learn everything they need to learn, at the moment they are ready for it. Learning is focused on children – on their competencies, not on their shortcomings. The approach is based on the idea that each child has “a hundred languages” to express the characteristics of the world around him/her. Children are developing and are encouraged to symbolically represent ideas and feelings through any of their hundred languages (expressive, communicative and cognitive), words, movements, drawings, painting, creativity, sculpture, play, collage, drama, music, etc. Approach Reggio Emilia emphasizes the importance of the process of researching and using art in the social environment. Children acquire knowledge and abilities to express their thoughts and ideas through creation. Therefore, the paper discusses the possibility of integration of contents and activities from the Reggio Emilia approach in preschool music education, with aim to improve it.

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Liu, Boyang, Raphael Haftka, and Mehmet Akgun. "Permutation genetic algorithm for stacking sequence optimization." In 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-1830.

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Muder, Sean, Erian Armanios, and R. Haynes. "Optimal Stacking Sequences for Thermally Induced Twist Deformation." In 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
20th AIAA/ASME/AHS Adaptive Structures Conference
14th AIAA. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-1947.

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Peeters, Daniël, and Mostafa Abdalla. "Stacking sequence constraints in non-conventional composite laminate optimisation." In 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-1969.

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Todoroki, Akira, and Yuichiro Terada. "Stacking Sequence Optimizations Using Fractal Branch and Bound Method." In 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-1298.

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Li, Nan, Burcin Becerik-Gerber, Bhaskar Krishnamachari, and Lucio Soibelman. "An Environment-Aware Sequence-Based Localization Algorithm for Supporting Building Emergency Response Operations." In ASCE International Workshop on Computing in Civil Engineering. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784413029.069.

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Mattrand, Cécile, Jean-Marc Bourinet, Maurice Lemaire, Pierre Bernard, and Michel Fogli. "Modeling and simulation of stochastic fatigue load sequences derived from in-flight load data." In 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-2034.

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Lee, Yujin, Martin Fischer, and Jung In Kim. "Evaluation of Reshuffling Efforts to Comply with Installation Sequences of Prefabricated Interior Wall Panels from Bunks Delivered On Site." In ASCE International Conference on Computing in Civil Engineering 2019. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482421.080.

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