Relevant bibliographies by topics / Spatial formation

Contents

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

Academic literature on the topic 'Spatial formation'

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

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Journal articles on the topic "Spatial formation"

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Last, Nana. "Flow’s Socio-spatial Formation." Thresholds 40 (January 2012): 39–46. http://dx.doi.org/10.1162/thld_a_00130.

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Jiang, Luo-Luo, Wen-Xu Wang, and Bing-Hong Wang. "Pattern formation in spatial games." Physics Procedia 3, no. 5 (August 2010): 1933–39. http://dx.doi.org/10.1016/j.phpro.2010.07.038.

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Nagel, Kai, Martin Shubik, Maya Paczuski, and Per Bak. "Spatial competition and price formation." Physica A: Statistical Mechanics and its Applications 287, no. 3-4 (December 2000): 546–62. http://dx.doi.org/10.1016/s0378-4371(00)00392-7.

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Eggers, J., T. Grava, M. A. Herrada, and G. Pitton. "Spatial structure of shock formation." Journal of Fluid Mechanics 820 (May 5, 2017): 208–31. http://dx.doi.org/10.1017/jfm.2017.205.

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The formation of a singularity in a compressible gas, as described by the Euler equation, is characterized by the steepening and eventual overturning of a wave. Using self-similar variables in two space dimensions and a power series expansion based on powers of $|t_{0}-t|^{1/2}$, $t_{0}$ being the singularity time, we show that the spatial structure of this process, which starts at a point, is equivalent to the formation of a caustic, i.e. to a cusp catastrophe. The lines along which the profile has infinite slope correspond to the caustic lines, from which we construct the position of the shock. By solving the similarity equation, we obtain a complete local description of wave steepening and of the spreading of the shock from a point. The shock spreads in the transversal direction as $|t_{0}-t|^{1/2}$ and in the direction of propagation as $|t_{0}-t|^{3/2}$, as also found in a one-dimensional model problem.
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Leonova, E. I., M. V. Baranov, and O. V. Galzitskaya. "Formation of RNA spatial structures." Molecular Biology 46, no. 1 (February 2012): 34–46. http://dx.doi.org/10.1134/s0026893312010104.

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Puu, T. "Pattern formation in spatial economics." Chaos, Solitons & Fractals 3, no. 1 (January 1993): 99–129. http://dx.doi.org/10.1016/0960-0779(93)90043-z.

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Cortes-Poza, Yuriria, Pablo Padilla-Longoria, and Elena Alvarez-Buylla. "Spatial dynamics of floral organ formation." Journal of Theoretical Biology 454 (October 2018): 30–40. http://dx.doi.org/10.1016/j.jtbi.2018.05.032.

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FUJIMOTO, Koichi, Shuji ISHIHARA, and Kunihiko KANEKO. "Network Evolution of Spatial Pattern Formation." Seibutsu Butsuri 50, no. 1 (2010): 018–22. http://dx.doi.org/10.2142/biophys.50.018.

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Tainaka, K., S. Fukazawa, H. Nishimori, M. Yokosawa, and S. Mineshige. "Spatial Pattern Formation of Interstellar Medium." International Astronomical Union Colloquium 134 (1993): 117–20. http://dx.doi.org/10.1017/s0252921100014007.

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AbstractPopulation dynamics of multi-phased interstellar medium (ISM) is investigated by using the lattice model in position-fixed reaction. Interactions between three distinct phases of gas, cold clouds, warm gas, and hot gas give rise to cyclic phase changes in ISM. Such local phase changes are propagated in space, and stochastic steady-state spatial pattern is finally achieved. We obtain the following two characteristic patterns: (1)When the sweeping rate of a warm gas into a cold component is relatively high, cold clouds associated with warm gas form small-scale clumps and are dispersively distributed, whereas hot gas covers large fraction of space.(2)When the sweeping rate is relatively low, in contrast, warm gas and cold clouds are diffusively and equally distributed, while hot gas component is substantially localized.
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Müller, Stefan C., and John Ross. "Spatial Structure Formation in Precipitation Reactions." Journal of Physical Chemistry A 107, no. 39 (October 2003): 7997–8008. http://dx.doi.org/10.1021/jp030364o.

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Dissertations / Theses on the topic "Spatial formation"

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Cruywagen, Gerhard C. "Tissue interaction and spatial pattern formation." Thesis, University of Oxford, 1992. http://ora.ox.ac.uk/objects/uuid:f242b785-9b46-4c21-a789-477b025ce4b3.

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The development of spatial structure and form on vertebrate skin is a complex and poorly understood phenomenon. We consider here a new mechanochemical tissue interaction model for generating vertebrate skin patterns. Tissue interaction, which plays a crucial role in vertebrate skin morphogenesis, is modelled by reacting and diffusing signal morphogens. The model consists of seven coupled partial differential equations, one each for dermal and epidermal cell densities, four for the signal morphogen concentrations and one for describing epithelial mechanics. Because of its complexity, we reduce the full model to a small strain quasi-steady-state model, by making several simplifying assumptions. A steady state analysis demonstrates that our reduced system possesses stable time-independent steady state solutions on one-dimensional spatial domains. A linear analysis combined with a multiple time-scale perturbation procedure and numerical simulations are used to examine the range of patterns that the model can exhibit on both one- and two-dimensions domains. Spatial patterns, such as rolls, squares, rhombi and hexagons, which are remarkably similar to those observed on vertebrate skin, are obtained. Although much of the work on pattern formation is concerned with synchronous spatial patterning, many structures on vertebrate skin are laid down in a sequential fashion. Our tissue interaction model can account for such sequential pattern formation. A linear analysis and a regular perturbation analysis is used to examine propagating epithelial contraction waves coupled to dermal cell invasion waves. The results compare favourably with those obtained from numerical simulations of the model. Furthermore, sequential pattern formation on one-dimensional domains is analysed; first by an asymptotic technique, and then by a new method involving the envelopes of the spatio-temporal propagating solutions. Both methods provide analytical estimates for the speeds of the wave of propagating pattern which are in close agreement with those obtained numerically. Finally, by numerical simulations, we show that our tissue interaction model can account for two-dimensional sequential pattern formation. In particular, we show that complex two-dimensional patterns can be determined by simple quasi-one-dimensional patterns.
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COLOMBO, EDUARDO HENRIQUE FILIZZOLA. "SPATIAL PATTERN FORMATION IN POPULATION DYNAMICS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24777@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
BOLSA NOTA 10
Motivado pela riqueza de fenômenos produzidos pelos seres vivos, este trabalho busca estudar a formação de padrões espaciais de populações biológicas. De um ponto de vista mesoscópico, definimos os processos básicos que podem ocorrer na dinâmica, construindo uma equação diferencial parcial para a evolução da distribuição da população. Essa equação incorpora duas generalizações de um modelo pre-existente para a dinâmica de um espécie, que leva em conta interações de longo alcance (não locais). A primeira generalização consiste em considerar que a difusão é não linear, isto é, é afetada pela densidade local de tal modo que o coeficiente de difusão segue uma lei de potência. Por outro lado, visto a alta complexidade envolvida na natureza dos parâmetros do modelo, introduzimos como segunda generalização parâmetros que flutuam no tempo. Idealizamos estas flutuações como um ruído descorrelacionado temporalmente e que obedece uma distribuição gaussiana (ruído branco). Para estudar o modelo resultante, utilizamos uma abordagem analítica e numérica. As ferramentas analíticas se baseiam na linearização da equação de evolução e portanto são aproximadas. Todavia, complementadas com resultados numéricos, conseguimos extrair conclusões relevantes. A não localidade das interações induz a formação de padrões. O alcance dessas interações é o que determina o modo dominante presente nos padrões. Assim, para valores dos parâmetros acima de um limiar crítico, emergem padrões. Analiticamente, mostramos que, mesmo abaixo desse limiar, as flutuações nos parâmetros podem induzir a aparição de ordem espacial. Os efeitos da difusão não-linear são captados superficialmente pela análise linear. Numericamente, mostraremos que sua presença modifica a forma dos padrões. Observamos, especialmente, a existência de uma transição quando alternamos entre o caso em que a difusão é facilitada por altas densidades e o caso oposto. Para o primeiro caso, verificamos que os padrões se tornam fragmentados, ou seja, a população é agora composta de sub-grupos desconectados.
Motivated by the richness of phenomena produced by living beings, this work aims to study the formation of spatial patterns in biological populations. From the mesoscopic point of view, we define the basic processes that may occur in the dynamics, building a partial differential equation for the evolution of the population distribution. This equation incorporates two generalizations of a pre-existing model for the dynamics of one species, which takes into account long-range (nonlocal) interactions. The first generalization is to consider that diffusion is nonlinear, i.e., it is affected by the local density such that the diffusion coeficient follows a power law. On the other hand, because of the high complexity involved in the nature of model parameters, we introduced as a second generalization time-fluctuating parameters. We idealize these fluctuations as Gaussian temporally uncorrelated (white) noises. To study the resulting model, we use an analytical and numerical approach. Analytical tools are based on the linearization of the evolution equation and are therefore approximate. However, as evidenced by numerical results, we draw important conclusions. The nonlocal feature of the interaction is the main mechanism which induces pattern formation. We show that the extent of these interactions is what characterizes the dominant mode. Thus, for parameter values above a critical threshold patterns emerge. Analytically, we also show that even below this threshold, fluctuations in the parameters can induce the appearance of spatial order. The effects of nonlinear diffusion are only superficially captured by the linear analysis. Numerically, we show that their presence modifies the patterns shape. We mainly observed the existence of a qualitative difference between the cases when diffusion is facilitated or not by high densities. In the first case, we note that the patterns become fragmented, that is, population becomes composed of disconnected clusters.
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Tse, Dawn Po-Ling. "Spatial period-multiplying bifurcations in pattern formation." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616060.

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Julien, Keith Anthony. "Strong spatial resonance in convection." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386110.

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Irvine, Michael Alastair. "Pattern formation and persistence in spatial plant ecology." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/67166/.

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The main aim of the thesis is to explore the interaction between pattern and process in vegetation ecology using a variety of mathematical and statistical methods. Of particular interest is what information about the dynamics of the underlying system can be gained through a single spatial snapshot, such as an aerial photograph or satellite image. The hypotheses are related to seagrass ecology, whose growth is primarily clonal and broadly exists as a monoculture and thus makes it an ideal candidate to study these interactions. The thesis broadly concerns two forms of spatial pattern and the underlying dynamics that give rise to them. The first concerns regular pattern formation, where the pattern has a characteristic length scale. Examples are abundant in natural systems, such as mussel beds, semi-arid ecosystems as well as seagrass. The developments concerned with regular pattern formation include methods of detection in a large spatial dataset, a novel stochastic model of vegetation that produces regular pattern with plausible mechanisms, the development of a new methodology to fit regular spatial pattern data to the model and the impact as well as evolutionary mechanisms of regular patterning in the presence of disease. The second form of spatial pattern exhibited in a wide variety of sessile species is scale-free or fractal patterning. Certain scaling heuristics, such as the boundary dimension of a vegetation cluster or the power-law exponent of the patch-size distribution have been used to infer properties of the dynamics. We explore these heuristics using a variety of plausible models of vegetation growth and find the circumstances under which there is a clear relationship between the spatial heuristics and the dynamics. These are then supplemented by viewing vegetation growth as an aggregation process. A novel model of vegetation aggregation with death is produced to find the origin of the ubiquitous power-law patch-size distribution found in nature. Finally the impact of scaling on the spread of disease is explored.
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Kose, Semra. "Spatial Formation Of The Interface Between University And City." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612586/index.pdf.

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Universities have a significant role in society as they are generators of economic activity, as land developers, as neighbors and as property owners. Therefore it is a focal point in the community. Every university lives within a surrounding community. They have been creating their own relations with the neighborhoods. The space that the university confronts with the city is shaped according to the needs of the people from the university and the inhabitants of the area. Between the university and the city, every university creates their own interface in accordance with the location and the inhabitants of the area. While planning the city or the university the interface zone did not take into account. It has been behaved as a part of the city although it has been a neighbor with university. While designing the university there has been no attempt to design this zone or making decisions including this zone. Therefore this space creates its own character in time. As it is locating between the city and the university it has been carrying both the character of the university and the city. The main aim of this study is to examine the spatial formation of the interface of university and city in respect to the planning decisions and spatial features of the area by investigating the two different types of universities in their own contexts in Ankara
Ankara University and METU. In this context, the spatial character of interface area is defined by examining this space as a transitional area, boundary and threshold. Then universities and their historical developments are examined in urban space and the relations between these two domains are investigated through the selected universities in Europe and USA. Finally, the situation of the university in Turkey is handled and searched the formation of the interface areas around the campuses of the two selected universities in Ankara.
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Ali, Adnan. "Stochastic pattern formation in growth models with spatial competition." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/54323/.

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The field of stochastic growth encompasses various different processes which are ubiquitously seen across the physical world. In many systems, stochasticity appears quite naturally, where inherent randomness provides the right setting for the tone of motion and interaction, whose symphony leads to the surprising emergence of interesting patterns and structure. Although on the microscopic scale one can be overwhelmed by the randomness arising from the fluctuating interactions between components, on the macroscopic scale, however, one is mesmerized by the emergence of mathematical beauty and symmetry, leading to complex structures with fractal architecture. Competition between components adds an extra degree of complexity and leads to the possibility of critical behaviour and phase transitions. It is an important aspect of many systems, and in order to provide a full explanation of many natural phenomena, we have to understand the role it plays on modifying behaviour. The combination of stochastic growth and competition leads to the emergence of interesting complex patterns. They occur in various systems and in many forms, and thus we treat competition in growth models driven by different laws for the stochastic noise. As a consequence our results are widely applicable and we encourage the reader to find good use for them in their respective field. In this thesis we study stochastic systems containing interacting particles whose motion and interplay lead to directed growth structures on a particular geometry. We show how the effect of the overall geometry in many growth processes can be captured elegantly in terms of a time dependent metric. A natural example we treat is isoradial growth in two dimensions, with domain boundaries of competing microbial species as an example of a system with a homogeneously changing metric. In general, we view domain boundaries as space-time trajectories of particles moving on a dynamic surface and map those into more easily tractable systems with constant metric. This leads to establishing a generic relation between locally interacting, scale invariant stochastic space-time trajectories under constant and time dependent metric. Indeed “the book of nature is written in the language of mathematics” (Galileo Galilei) and we provide a mathematical framework for various systems with various interactions and our results are backed with numerical confirmation.
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Madzvamuse, Anotida. "A numerical approach to the study of spatial pattern formation." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343437.

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Moss, Jennifer Leigh. "The spatial and temporal distribution of pipe and pockmark formation." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54111/.

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This research concentrates on two study areas.  A family of blowout pipes from North Namibia imaged in 3D seismic data; and a group of large buried pockmarks and a field of small seabed pockmarks from the Western Nile Deep Sea Fan (NDSF) imaged in ultra high resolution 2D data.  The general themes of this research are pipe and pockmark morphology and formation process, their spatial and temporal distribution and the magnitude and frequency of fluid flux through the conduit. A family of blowout pipes from Namibia exhibit a variety of seismic characteristics, with the largest pipes containing a blowout crater and evidence of possible stacked palaeo-pockmarks. Pipe formation is shown to be intermittent and persistent throughout the Neogene. The spatial position of pipes adheres to both basinal and local controls. A group of large buried pockmarks on the NDSF are interpreted to have formed between 15,000 yrs BP and 125,000 yrs BP, the majority of which are believed to have formed at the same time c. 60,000-80,000 yrs BP.  These buried pockmarks show evidence for highly focused, episodic fluid flow following burial of the pockmark.  The longevity of post formation fluid migration is estimated to be ~50,000-100,000 yrs. A field of > 13,800 small seabed pockmarks (Nile Deep Sea Fan) are interpreted to have formed within the last 1,000 yrs.  Spatial statistics identified an exclusion zone or drainage cell surrounding each pockmark which is not penetrated by the formation of any other pockmark.  A conceptual model for a drainage cell is proposed whereby pockmark formation dissipates, a radius/area of fluid and overpressure, thereby preventing the formation of another pockmark within that cell.
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Sasaki, Yuya. "Dynamics of Spatial Pattern Formation: Cases of Spikes and Droplets." DigitalCommons@USU, 2007. https://digitalcommons.usu.edu/etd/7131.

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This thesis studies the gradient system that forms spatial patterns such that the minimum distances of pairs among various points are maximized in the end. As this problem innately involves singularity issues, an extended system of the gradient system is proposed. Motivated by the spatial pattern suggested by a numerical example, this extended system is applied to a three-point problem and then to a two-point problem in a quotient space of R2 modulo a lattice.
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Books on the topic "Spatial formation"

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Korablev, G. A. Spatial-energy principles of the processes for complex structure formation. Leiden: VSP/Brill, 2005.

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Iranian cities: Formation and development. Syracuse, NY: Syracuse University Press, 2000.

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Kheirabadi, Masoud. Iranian cities: Formation and development. Austin: University of Texas Press, 1991.

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Thrift, N. J. Spatial formations. London: Sage, 1996.

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Walgraef, D. Spatio-temporal pattern formation: With examples from physics, chemistry, and materials science. New York: Springer, 1997.

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Walgraef, Daniel. Spatio-Temporal Pattern Formation. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1850-0.

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Krekotnev, Sergey. State policy in relation to cities and regions with mono-specialization: experience and priorities. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1098273.

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The monograph analyzes the policy in relation to cities and regions with monospecialization as one of the priority directions of state policy. The article considers the specifics of single-industry cities and regions as socio-political phenomena and objects of state regulation. The main principles, directions, mechanisms and tools for the implementation of state policy in relation to single-profile spatial formations are studied. Special attention is paid to the political and comparative analysis of foreign and domestic experience in the formation and implementation of this direction of state policy, as well as to identifying the degree of applicability of its main models in modern conditions. For specialists in the field of political science and related sciences, as well as anyone interested in this issue in its theoretical and applied dimensions.
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Damen, Mario, and Kim Overlaet, eds. Constructing and Representing Territory in Late Medieval and Early Modern Europe. NL Amsterdam: Amsterdam University Press, 2021. http://dx.doi.org/10.5117/9789463726139.

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In recent political and constitutional history, scholars seldom specify how and why they use the concept of territory. In research on state formation processes and nation building, for instance, the term mostly designates an enclosed geographical area ruled by a central government. Inspired by ideas from political geographers, this book explores the layered and constantly changing meanings of territory in late medieval and early modern Europe before cartography and state formation turned boundaries and territories into more fixed (but still changeable) geographical entities. Its central thesis is that analysing the notion of territory in a premodern setting involves analysing territorial practices: practices that relate people and power to space(s). The book not only examines the construction and spatial structure of premodern territories but also explores their perception and representation through the use of a broad range of sources: from administrative texts to maps, from stained glass windows to chronicles.
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Packevich, Alla. Model of the settlement system of the future. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/997136.

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The textbook is devoted to the issues of understanding the laws in the evolution of human consciousness and the formation of a pyramid of human values. For this purpose, the study analyzes the periodization of spatial structures and attempts to reproduce the logic of the process of consciousness development. The place of man in the system of cosmic evolution, the understanding of the process of transition from passive and unconscious human participation in evolution to active and conscious are comprehended. Brief information about the principles of the formation of the structure of space and the organization of systems of populated places is presented. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for students of all forms of education of educational institutions of secondary vocational and higher education in the field of training "Architecture" , as well as for all those interested in the problems of territorial development.
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Walgraef, D. Spatio-Temporal Pattern Formation: With Examples from Physics, Chemistry, and Materials Science. New York, NY: Springer New York, 1997.

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Book chapters on the topic "Spatial formation"

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Puu, Tönu. "Spatial Pattern Formation." In Nonlinear Economic Dynamics, 8–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-662-00754-9_2.

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Puu, Tönu. "Spatial Pattern Formation." In Nonlinear Economic Dynamics, 10–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-97450-2_2.

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Puu, Tönu. "Spatial Pattern Formation." In Nonlinear Economic Dynamics, 8–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-97291-1_2.

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Puu, T. "Pattern Formation in Spatial Economics." In Economics of Space and Time, 161–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60877-3_9.

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Coullet, P., C. Elphick, and D. Repaux. "Spatial Disorder in Extended Systems." In The Physics of Structure Formation, 290–302. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-73001-6_23.

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Puu, Tönu. "Optimality Versus Stability: Pattern Formation in Spatial Economics." In Advances in Spatial Science, 155–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00627-2_5.

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Herben, Tomáš, and Toshihiko Hara. "Spatial Pattern Formation in Plant Communities." In Morphogenesis and Pattern Formation in Biological Systems, 223–35. Tokyo: Springer Japan, 2003. http://dx.doi.org/10.1007/978-4-431-65958-7_19.

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Tainaka, K., S. Fukazawa, H. Nishimori, M. Yokosawa, and S. Mineshige. "Spatial Pattern Formation of Interstellar Medium." In Nonlinear Phenomena in Stellar Variability, 117–20. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1062-4_12.

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Gomes, M. Gabriela M., Isabel S. Labouriau, and Eliana M. Pinho. "Spatial Hidden Symmetries in Pattern Formation." In Pattern Formation in Continuous and Coupled Systems, 83–99. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1558-5_7.

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Müller, S. C. "Spatial Ordering Processes in Chemical Reactions." In Thermodynamics and Pattern Formation in Biology, edited by Ingolf Lamprecht and A. I. Zotin, 127–48. Berlin, Boston: De Gruyter, 1988. http://dx.doi.org/10.1515/9783110848403-009.

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Conference papers on the topic "Spatial formation"

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Liu, Weifeng, and Long Han. "Stereo vision for spacecraft formation flying relative navigation." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.772924.

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Zheng, Yibo, Lei Zhang, Liping Jia, Qiang Liu, and Junjian Kang. "Spatial Pattern Formation in Biological System." In 2009 2nd International Conference on Biomedical Engineering and Informatics. IEEE, 2009. http://dx.doi.org/10.1109/bmei.2009.5305542.

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Shi, Chao, Michihiro Shimada, Takayuki Kanda, Hiroshi Ishiguro, and Norihiro Hagita. "Spatial Formation Model for Initiating Conversation." In Robotics: Science and Systems 2011. Robotics: Science and Systems Foundation, 2011. http://dx.doi.org/10.15607/rss.2011.vii.039.

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Qiu, Wenxun, Xiaochun Gong, and Guodong Xu. "Real-time performance validation of spread spectrum aloha for satellite formation flying." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.772974.

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Zhang, Changfang, Hongwen Yang, Weidong Hu, and Wenxian Yu. "Ship formation recognition based on information fusion of spaceborne IMINT and ELINT." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.775016.

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DelRe, Eugenio, and Aharon J. Agranat. "Dielectric nonlinearity in photorefractive spatial soliton formation." In Nonlinear Guided Waves and Their Applications. Washington, D.C.: OSA, 2002. http://dx.doi.org/10.1364/nlgw.2002.nltud39.

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Shevchenko, A., V. Zamyatin, and I. Bondarenko. "Impulse Formation by Spatial-Time Phase Encoding." In 2006 3rd International Conference on Ultrawideband and Ultrashort Impulse Signals. IEEE, 2006. http://dx.doi.org/10.1109/uwbus.2006.307213.

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Gergova, Evdokia. "FORMATION OF SPATIAL THINKING IN GEOGRAPHY TRAINING." In 7th International Scientific Conference GEOBALCANICA 2021. Geobalcanica Society, 2021. http://dx.doi.org/10.18509/gbp210603g.

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Li, Hui, Qinyu Zhang, and Naitong Zhang. "Neural networks filter for hybrid navigation of formation flying spacecraft in deep space." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.773339.

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Du, Yong-jun, Yong-jun Jin, and Han Li. "Research on cooperative detection of UAV formation system based on multi-agent technology." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.775076.

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Reports on the topic "Spatial formation"

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Agresar, Grenmarie, and Michael A. Savageau. Final Report, December, 1999. Sloan - US Department of Energy joint postdoctoral fellowship in computational molecular biology [Canonical nonlinear methods for modeling and analyzing gene circuits and spatial variations during pattern formation in embryonic development]. Office of Scientific and Technical Information (OSTI), December 1999. http://dx.doi.org/10.2172/811376.

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Andricevic, R. Transport of sorbing solutes in randomly heterogeneous formations: Spatial moments, macrodispersion, and parameter uncertainty. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10105844.

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Vas, Dragos, Steven Peckham, Carl Schmitt, Martin Stuefer, Ross Burgener, and Telayna Wong. Ice fog monitoring near Fairbanks, AK. Engineer Research and Development Center (U.S.), March 2021. http://dx.doi.org/10.21079/11681/40019.

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Ice fog events, which occur during the Arctic winter, result in greatly decreased visibility and can lead to an increase of ice on roadways, aircraft, and airfields. The Fairbanks area is known for ice fog conditions, and previous studies have shown these events to be associated with moisture released from local power generation. Despite the identified originating mechanism of ice fog, there remains a need to quantify the environmental conditions controlling its origination, intensity, and spatial extent. This investigation focused on developing innovative methods of identifying and characterizing the environmental conditions that lead to ice fog formation near Fort Wainwright, Alaska. Preliminary data collected from December 2019 to March 2020 suggest that ice fog events occurred with temperatures below −34°C, up to 74% of the time ice fog emanated from the power generation facility, and at least 95% of ice particles during ice fog events were solid droxtals with diameters ranging from 7 to 50 μm. This report documents the need for frequent and detailed observations of the meteorological conditions in combination with photographic and ice particle observations. Datasets from these observations capture the environmental complexity and the impacts from energy generation in extremely cold weather conditions.
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Brophy, Kenny, and Alison Sheridan, eds. Neolithic Scotland: ScARF Panel Report. Society of Antiquaries of Scotland, June 2012. http://dx.doi.org/10.9750/scarf.06.2012.196.

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The main recommendations of the Panel report can be summarised as follows: The Overall Picture: more needs to be understood about the process of acculturation of indigenous communities; about the Atlantic, Breton strand of Neolithisation; about the ‘how and why’ of the spread of Grooved Ware use and its associated practices and traditions; and about reactions to Continental Beaker novelties which appeared from the 25th century. The Detailed Picture: Our understanding of developments in different parts of Scotland is very uneven, with Shetland and the north-west mainland being in particular need of targeted research. Also, here and elsewhere in Scotland, the chronology of developments needs to be clarified, especially as regards developments in the Hebrides. Lifeways and Lifestyles: Research needs to be directed towards filling the substantial gaps in our understanding of: i) subsistence strategies; ii) landscape use (including issues of population size and distribution); iii) environmental change and its consequences – and in particular issues of sea level rise, peat formation and woodland regeneration; and iv) the nature and organisation of the places where people lived; and to track changes over time in all of these. Material Culture and Use of Resources: In addition to fine-tuning our characterisation of material culture and resource use (and its changes over the course of the Neolithic), we need to apply a wider range of analytical approaches in order to discover more about manufacture and use.Some basic questions still need to be addressed (e.g. the chronology of felsite use in Shetland; what kind of pottery was in use, c 3000–2500, in areas where Grooved Ware was not used, etc.) and are outlined in the relevant section of the document. Our knowledge of organic artefacts is very limited, so research in waterlogged contexts is desirable. Identity, Society, Belief Systems: Basic questions about the organisation of society need to be addressed: are we dealing with communities that started out as egalitarian, but (in some regions) became socially differentiated? Can we identify acculturated indigenous people? How much mobility, and what kind of mobility, was there at different times during the Neolithic? And our chronology of certain monument types and key sites (including the Ring of Brodgar, despite its recent excavation) requires to be clarified, especially since we now know that certain types of monument (including Clava cairns) were not built during the Neolithic. The way in which certain types of site (e.g. large palisaded enclosures) were used remains to be clarified. Research and methodological issues: There is still much ignorance of the results of past and current research, so more effective means of dissemination are required. Basic inventory information (e.g. the Scottish Human Remains Database) needs to be compiled, and Canmore and museum database information needs to be updated and expanded – and, where not already available online, placed online, preferably with a Scottish Neolithic e-hub that directs the enquirer to all the available sources of information. The Historic Scotland on-line radiocarbon date inventory needs to be resurrected and kept up to date. Under-used resources, including the rich aerial photography archive in the NMRS, need to have their potential fully exploited. Multi-disciplinary, collaborative research (and the application of GIS modelling to spatial data in order to process the results) is vital if we are to escape from the current ‘silo’ approach and address key research questions from a range of perspectives; and awareness of relevant research outside Scotland is essential if we are to avoid reinventing the wheel. Our perspective needs to encompass multi-scale approaches, so that ScARF Neolithic Panel Report iv developments within Scotland can be understood at a local, regional and wider level. Most importantly, the right questions need to be framed, and the right research strategies need to be developed, in order to extract the maximum amount of information about the Scottish Neolithic.
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