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Journal articles on the topic 'The four spaces model'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Chan, Tak-Wai, Chih-Wei Hue, Chih-Yueh Chou, and Ovid J. L. Tzeng. "Four spaces of network learning models." Computers & Education 37, no. 2 (2001): 141–61. http://dx.doi.org/10.1016/s0360-1315(01)00044-6.

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Jochumsen, Henrik, Casper Hvenegaard Rasmussen, and Dorte Skot‐Hansen. "The four spaces – a new model for the public library." New Library World 113, no. 11/12 (2012): 586–97. http://dx.doi.org/10.1108/03074801211282948.

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Bouncken, Ricarda B., Yixin Qiu, and Thomas Clauss. "Coworking-Space Business Models: Micro-Ecosystems and Platforms — Insights from China." International Journal of Innovation and Technology Management 17, no. 06 (2020): 2050044. http://dx.doi.org/10.1142/s0219877020500443.

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The sharing economy gives rise to numerous new business models. A prominent novel one relates to coworking-spaces, where independent individuals and teams share spaces and amenities and engage in social interaction and information exchange. Yet the business models of such spaces are not well known. Our qualitative study identifies four types of business models design of coworking-spaces in China, where coworking-spaces have sharply increased in number and importance. We find four types of coworking-space business model configurations: efficiency-centered business model, user-centered business

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ABE, MITSUKO. "MODULI SPACES IN THE FOUR-DIMENSIONAL TOPOLOGICAL HALF-FLAT GRAVITY." Modern Physics Letters A 10, no. 32 (1995): 2401–12. http://dx.doi.org/10.1142/s0217732395002556.

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We classify the moduli spaces of the four-dimensional topological half-flat gravity models by using the canonical bundle. For a K3-surface or T4, they describe an equivalent class of a trio of the Einstein-Kähler forms (the hyperkähler forms). We calculate the dimensions of these moduli spaces by using the Atiyah-Singer Index theorem. We mention the partition function and the possibility of the observables in the Witten-type topological half-flat gravity model case.

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Popov, Alexander D., and Martin Wolf. "Topological B-Model on Weighted Projective Spaces and Self-Dual Models in Four Dimensions." Journal of High Energy Physics 2004, no. 09 (2004): 007. http://dx.doi.org/10.1088/1126-6708/2004/09/007.

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Pestka, Grzegorz, and Jacek Karwowski. "Dirac-Coulomb Hamiltonian in N-Electron Model Spaces." Collection of Czechoslovak Chemical Communications 68, no. 2 (2003): 275–94. http://dx.doi.org/10.1135/cccc20030275.

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Relations between matrices representing non-relativistic and relativistic N-electron Hamiltonians in N-electron model spaces are analyzed. The model spaces are defined as the antisymmetric parts of products of the N-th Kronecker power of either a two-dimensional (the non-relativistic case) or four-dimensional (the relativistic case) spinor space and of an orbital (or configurational) space. The explicit relation between the matrices corresponding to the relativistic and non-relativistic cases is derived and its practical implications are briefly discussed.

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van der Voordt, Theo, Iris Bakker, and Jan de Boon. "Color preferences for four different types of spaces." Facilities 35, no. 3/4 (2017): 155–69. http://dx.doi.org/10.1108/f-06-2015-0043.

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Purpose Studies on color preferences for different types of spaces are scarce and show ambiguous results. This paper aims to present data about preferred colors for two work environments: the office and a meeting room, and two residential spaces: the living room and the bedroom. The authors also explore whether people with different personal characteristics of gender, age, education and type of person have different color preferences. Design/methodology/approach The data were collected by means of a questionnaire that was distributed among 1,077 Dutch people. Findings The color white was most

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Guetat, Sana Bent Aboulkacem, and Salem Ben Dhaou Dakhli. "The Four Spaces Model: A Framework for Services Governance in Urbanized Information Systems." Procedia Computer Science 100 (2016): 1208–19. http://dx.doi.org/10.1016/j.procs.2016.09.146.

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TAPIA, VICTOR. "INTEGRABLE CONFORMAL FIELD THEORY IN FOUR DIMENSIONS AND FOURTH-RANK GEOMETRY." International Journal of Modern Physics D 02, no. 04 (1993): 413–29. http://dx.doi.org/10.1142/s0218271893000295.

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We consider the conformal properties of geometries described by higher-rank line elements. A crucial role is played by the conformal Killing equation (CKE). We introduce the concept of null-flat spaces in which the line element can be written as dsr=r!dζ1 … dζr. We then show that, for null-flat spaces, the critical dimension, for which the CKE has infinitely many solutions, is equal to the rank of the metric. Therefore, in order to construct an integrable conformal field theory in four dimensions we need to rely on fourth-rank geometry. We consider the simple model ℒ = ¼ Gμνλρ ∂μ ϕ ∂ν ϕ ∂λ ϕ ∂

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CASTRO, CARLOS. "THE CLIFFORD SPACE GEOMETRY OF CONFORMAL GRAVITY AND U(4) × U(4) YANG–MILLS UNIFICATION." International Journal of Modern Physics A 25, no. 01 (2010): 123–43. http://dx.doi.org/10.1142/s0217751x1004752x.

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It is shown how a conformal gravity and U (4) × U (4) Yang–Mills grand unification model in four dimensions can be attained from a Clifford gauge field theory in C-spaces (Clifford spaces) based on the (complex) Clifford Cl (4, C) algebra underlying a complexified four-dimensional space–time (eight real dimensions). Upon taking a real slice, and after symmetry breaking, it leads to ordinary gravity and the Standard Model in four real dimensions. A brief conclusion about the noncommutative star-product deformations of this Grand Unified Theory of gravity with the other forces of Nature is prese

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Nino-Ruiz, Elias D., Juan C. Calabria-Sarmiento, Luis G. Guzman-Reyes, and Alvin Henao. "A Four Dimensional Variational Data Assimilation Framework for Wind Energy Potential Estimation." Atmosphere 11, no. 2 (2020): 167. http://dx.doi.org/10.3390/atmos11020167.

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In this paper, we propose a Four-Dimensional Variational (4D-Var) data assimilation framework for wind energy potential estimation. The framework is defined as follows: we choose a numerical model which can provide forecasts of wind speeds then, an ensemble of model realizations is employed to build control spaces at observation steps via a modified Cholesky decomposition. These control spaces are utilized to estimate initial analysis increments and to avoid the intrinsic use of adjoint models in the 4D-Var context. The initial analysis increments are mapped back onto the model domain from whi

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Wanas, M. I. "Cosmological Models in AP-Spaces." Symposium - International Astronomical Union 168 (1996): 575–76. http://dx.doi.org/10.1017/s0074180900110745.

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To solve some of the problems of standard cosmology, the Absolute Parallelism (AP) space is used to construct alternative field theories other than GR. Four different field theories are being reviewed. The consequences of their cosmological applications are being compared with those of GR. The results are promising and show that more investigations, concerning this space, are needed, especially generalization of the singularity theorems.

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Moradi, Shima, and Firoozeh Dokhani. "Using the Quadruple Helix Model for evaluation of health science researches." Library Hi Tech 38, no. 4 (2020): 723–39. http://dx.doi.org/10.1108/lht-08-2019-0156.

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PurposeAltmetrics is a complementary method in scientometrics for evaluating the performance of individuals, organizations, institutions and countries in social media. Due to the large volume of data related to the interactions in science, technology and innovation, there is no choice but to develop and implement accurate models for analysis and decision making. The Quadruple Helix Model examines the scientific outcomes in four spaces of innovation, knowledge, consensus and government with a distinctive attention to the “innovation space”. In other words, it aims to find the connection between

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Suzuki, Jun. "Information Geometrical Characterization of Quantum Statistical Models in Quantum Estimation Theory." Entropy 21, no. 7 (2019): 703. http://dx.doi.org/10.3390/e21070703.

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In this paper, we classify quantum statistical models based on their information geometric properties and the estimation error bound, known as the Holevo bound, into four different classes: classical, quasi-classical, D-invariant, and asymptotically classical models. We then characterize each model by several equivalent conditions and discuss their properties. This result enables us to explore the relationships among these four models as well as reveals the geometrical understanding of quantum statistical models. In particular, we show that each class of model can be identified by comparing qu

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Kameyama, Hirotaka, Ikuru Otomo, Masahiko Onosato, and Fumiki Tanaka. "Using a Four-Dimensional Mesh Model to Represent a Tool Motion Trajectory in Five-Axis Machining." International Journal of Automation Technology 8, no. 3 (2014): 437–44. http://dx.doi.org/10.20965/ijat.2014.p0437.

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In the field of machining processes, three-Dimensional (3D) models are commonly used to simulate the motions of cutting tools and workpieces. However, it is difficult for 3D models to represent spatio-temporal changes in their shapes continuously and to a high degree of accuracy. The objective of this study is to represent the 5-axis cutting process of workpiece transformation explicitly using a spatio-temporal model, the “four-Dimensional (4D) mesh model.” Every 4D mesh model is defined with bounding tetrahedral cells, and can continuously represent spatio-temporal changes of shape, position

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MANEL, SOUIDI, and BESTANDJI SIHAM. "Tafilelt, the Neo Traditional Model of Ksour in Algeria: Assessment of the Multifunctionality of Urban Spaces." Journal of Contemporary Urban Affairs 3, no. 2 (2019): 99–107. http://dx.doi.org/10.25034/ijcua.2018.4706.

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The new ksar of Tafilelt situated in Ghardaia in southern Algeria has attracted a lot of interest in scientific work, being a « neo traditional » urban model that reproduces the principles of composition and spatial organization of the ksour in the pentapolis of Ghardaia. This ksar embodies the adaptation between tradition and modernity: it refers to the local setting of the ksourien space production, contribute to the valorization of these ancient centers that date back to the XIth century. In parallel to the work of thesis undertaken on « the neo traditional models of reference in Algeria fo

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Jekabsons, G., and J. Lavendels. "A COMPARISON OF HEURISTIC METHODS FOR POLYNOMIAL REGRESSION MODEL INDUCTION." Mathematical Modelling and Analysis 13, no. 1 (2008): 17–27. http://dx.doi.org/10.3846/1392-6292.2008.13.17-27.

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We compare four different heuristic methods for polynomial regression model induction. The methods are very different in their approaches. Our main concern in this study is in the differences of candidate model spaces the methods deal with (completely predefined versus non‐predefined), as well as search strategies used. We investigate the advantages and disadvantages of the approaches represented by the methods in terms of predictive error, complexity of the induced models and required computational resources. For empirical comparisons, we use twelve test problems.

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ALAGHMAND, Sepideh, Farhang MOZAFFAR, Seyyed Bagher HOSSEINI, and Bahram Saleh SEDGHPOUR. "Investigating Factors Affecting Students' Self-Actualization At University Spaces." Revista Romaneasca pentru Educatie Multidimensionala 10, no. 1.SP (2018): 1. http://dx.doi.org/10.18662/rrem/32.

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Self-actualization is a high level of human requirement and as an existing need, which is the tendency of an individual to grow and realize available potentials. In the present crossover study, we aimed to identify the factors affecting self-actualization of students at spaces of universities.The method which used in this research was a qualitative research method, including documentary and Delphi method in two rounds. The results showed four factors affecting students' self-actualization at university spaces: 1. 1- Understanding one’s own nature: Understanding one’s own nature and finding con

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Wegner, Franz. "Four-loop-order β-function of nonlinear σ-models in symmetric spaces". Nuclear Physics B 316, № 3 (1989): 663–78. http://dx.doi.org/10.1016/0550-3213(89)90063-1.

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Бойков, Алексей, and Aleksey Boykov. "About Building of Models for Objects in Space of Four and More Dimensions in Educational Process." Geometry & Graphics 6, no. 4 (2019): 54–71. http://dx.doi.org/10.12737/article_5c21f96dce5de8.36096061.

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In this paper the visibility concept in the context of modeling of multidimensional spaces’ objects is clarified. It is concluded that such model’s visibility should be defined as unambiguity and completeness of information presented in this model and consistent with the student’s experience in the area of modeling a space of higher dimension (3D) by elements of spaces of lower dimension (2D). Such possibilities are presented by the generalized complex drawing. Examples for objects 4D-modeling using two 3D or three 2D flat projections are presented, some properties of the 4D generalized drawin

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KÖSE DOĞAN, Rabia. "A PROJECT MODEL IN INTERIOR ARCHITECTURE: FROM PATTERNS TO SPACES." Global Journal of Arts Education 7, no. 2 (2017): 40–46. http://dx.doi.org/10.18844/gjae.v7i2.965.

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Dating back to 3000 BC, Alaaddin Hill is located right in the heart of Konya province, which used to be the capital of Selcuk Civilization. More than 60 years wedding halls built on Alaaddin Hill is hardly ever used due to the reason that cars are unable to reach this area because there is an ongoing landscaping for almost four years. This building has become a problem for the city, also getting older every year. In this aspect, this building is revised as Museum of Selcuk Civilizations and projects are prepared to re-function it within the scope of course name Interior Architecture Project-7

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Manolakos, George, Pantelis Manousselis, and George Zoupanos. "Gauge Theories: From Kaluza–Klein to noncommutative gravity theories." Symmetry 11, no. 7 (2019): 856. http://dx.doi.org/10.3390/sym11070856.

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First, the Coset Space Dimensional Reduction scheme and the best particle physics model so far resulting from it are reviewed. Then, a higher-dimensional theory in which the extra dimensions are fuzzy coset spaces is described and a dimensional reduction to four-dimensional theory is performed. Afterwards, another scheme including fuzzy extra dimensions is presented, but this time the starting theory is four-dimensional while the fuzzy extra dimensions are generated dynamically. The resulting theory and its particle content is discussed. Besides the particle physics models discussed above, gra

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SHTYKOV, N. N. "THE FINITE VACUUM ENERGY FOR SPINOR, SCALAR AND VECTOR FIELDS." International Journal of Modern Physics A 10, no. 16 (1995): 2333–47. http://dx.doi.org/10.1142/s0217751x95001133.

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We compute the one-loop potential (the Casimir energy) for scalar fields with coupling ξR and massive spinor and vector fields on the spaces Rm+1×Y with Y=SN, CP2. We find that in most of the models a divergent part of the Casimir energy on even-dimensional spaces is canceled by means of the appropriate values of ξ, msp, mv. As a physical model we consider spinor electrodynamics on four-dimensional product manifolds and show that the Casimir energy is finite on R1×S3, R3×S1 and R2×S2 for msp=0, msp=0 and [Formula: see text] respectively.

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Abe, Mitsuko. "The Partition Function in the Four-Dimensional Schwarz-Type Topological Half-Flat Two-Form Gravity." Modern Physics Letters A 12, no. 06 (1997): 381–92. http://dx.doi.org/10.1142/s021773239700039x.

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We derive the partition functions of the Schwarz-type four-dimensional topological half-flat two-form gravity model on K3-surface or T4 up to on-shell one-loop corrections. In this model the bosonic moduli spaces describe an equivalent class of a trio of the Einstein–Kähler forms (the hyper-Kähler forms). The integrand of the partition function is represented by the product of some [Formula: see text]-torsions. [Formula: see text]-torsion is the extension of R-torsion for the de Rham complex to that for the [Formula: see text]-complex of a complex analytic manifold.

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Salvatore, Paolo. "Non-Formality of Planar Configuration Spaces in Characteristic 2." International Mathematics Research Notices 2020, no. 10 (2018): 3100–3129. http://dx.doi.org/10.1093/imrn/rny091.

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Abstract We prove that the ordered configuration space of four points or more in the plane has a nonformal singular cochain algebra in characteristic 2. This is proved by constructing an explicit nontrivial obstruction class in the Hochschild cohomology of the cohomology ring of the configuration space, by means of the Barratt–Eccles–Smith simplicial model. We also show that if the number of points does not exceed its dimension then a Euclidean configuration space is intrinsically formal over any ring.

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Song, Peihao, Gunwoo Kim, Audrey Mayer, Ruizhen He, and Guohang Tian. "Assessing the Ecosystem Services of Various Types of Urban Green Spaces Based on i-Tree Eco." Sustainability 12, no. 4 (2020): 1630. http://dx.doi.org/10.3390/su12041630.

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Urban green spaces play a crucial role in maintaining urban ecosystem sustainability by providing numerous ecosystem services. How to quantify and evaluate the ecological benefits and services of urban green spaces remains a hot topic currently, while the evaluation is barely applied or implemented in urban design and planning. In this study, super-high-resolution aerial images were used to acquire the spatial distribution of urban green spaces; a modified pre-stratified random sampling method was applied to obtain the vegetation information of the four types of urban green spaces in Luohe, a

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Bouchner, Karel, and Alina Mashko. "MODEL CAR TRANSPORT SYSTEM - MODERN ITS EDUCATION TOOL." Acta Polytechnica CTU Proceedings 12 (December 15, 2017): 5. http://dx.doi.org/10.14311/app.2017.12.0005.

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The model car transport system is a laboratory intended for a practical development in the area of the motor traffic. It is also an important education tool for students’ hands-on training, enabling students to test the results of their own studies. The main part of the model car transportation network is a model in a ratio 1:87 (HO), based on component units of FALLER Car system, e.g. cars, traffic lights, carriage way, parking spaces, stop sections, branch-off junctions, sensors and control sections. The model enables to simulate real traffic situations. It includes a motor traffic in a city

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RUSSO, JORGE G. "COSMOLOGICAL STRING MODELS FROM MILNE SPACES AND SL(2, ℤ) ORBIFOLD". Modern Physics Letters A 19, № 06 (2004): 421–32. http://dx.doi.org/10.1142/s0217732304013209.

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The (n + 1)-dimensional Milne universe with extra free directions is used to construct simple FRW cosmological string models in four dimensions, describing expansion in the presence of matter with p= κρ, κ = (4 - n)/3n. We then consider the n = 2 case and make SL(2, ℤ) orbifold identifications. The model is surprisingly related to the null orbifold with an extra reflection generator. The study of the string spectrum involves the theory of harmonic functions in the fundamental domain of SL(2, ℤ). In particular, from this theory one can deduce a bound for the energy gap and the fact that there a

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Koppelaar, Rembrandt, Antonino Marvuglia, Lisanne Havinga, Jelena Brajković, and Benedetto Rugani. "Is Agent-Based Simulation a Valid Tool for Studying the Impact of Nature-Based Solutions on Local Economy? A Case Study of Four European Cities." Sustainability 13, no. 13 (2021): 7466. http://dx.doi.org/10.3390/su13137466.

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Implementing nature-based solutions (NBSs) in cities, such as urban forests, can have multiple effects on the quality of life of inhabitants, acting on the mitigation of climate change, and in some cases also enhancing citizens’ social life and the transformation of customer patterns in commercial activities. Assessing this latter effect is the aim of this paper. An agent-based model (ABM) was used to assess change in commercial activities by small and midsize companies in retail due to the development of parks. The paper focuses on the potential capacity of NBS green spaces to boost retail co

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SASAKURA, NAOKI. "THE FLUCTUATION SPECTRA AROUND A GAUSSIAN CLASSICAL SOLUTION OF A TENSOR MODEL AND THE GENERAL RELATIVITY." International Journal of Modern Physics A 23, no. 05 (2008): 693–718. http://dx.doi.org/10.1142/s0217751x08038536.

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Tensor models can be interpreted as theory of dynamical fuzzy spaces. In this paper, I study numerically the fluctuation spectra around a Gaussian classical solution of a tensor model, which represents a fuzzy flat space in arbitrary dimensions. It is found that the momentum distribution of the low-lying low-momentum spectra is in agreement with that of the metric tensor modulo the general coordinate transformation in the general relativity at least in the dimensions studied numerically, i.e. one to four dimensions. This result suggests that the effective field theory around the solution is de

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Urenev, Valery, Tanya Rumilets, and Nadiia Antonenko. "PRACTICAL STEPS FOR RENOVATING THE ARCHITECTURAL AND PLANNING ORGANIZATION OF PUBLIC LIBRARY BUILDINGS." Current problems of architecture and urban planning, no. 59 (March 1, 2021): 327–47. http://dx.doi.org/10.32347/2077-3455.2021.59.327-347.

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The article considers the current process of implementing the concept of four spaces in the Ukrainian libraries, which was developed by experts from the Center for Cultural Policy Studies of the Royal School of Library and Information Sciences at the University of Copenhagen (2006) in terms of architectural and planning reorganization of public libraries. The main results of the project-experimental work, which included the development of project documentation for the pilot project of the renovation of the public library in Odesa and a comparison of the stages of work with the information pres

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LAAMARA, RACHID AHL, ADIL BELHAJ, LUIS J. BOYA, and ANTONIO SEGUI. "ON LOCAL F-THEORY GEOMETRIES AND INTERSECTING D7-BRANES." International Journal of Geometric Methods in Modern Physics 06, no. 07 (2009): 1207–20. http://dx.doi.org/10.1142/s0219887809004181.

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We discuss local F-theory geometries and their gauge theory dualities in terms of intersecting D7-branes wrapped four-cycles in Type IIB superstring. The manifolds are built as elliptic K3 surface fibrations over intersecting F0 = CP1 × CP1 base geometry according to ADE Dynkin Diagrams. The base is obtained by blowing up the extended ADE hyper-Kähler singularities of eight-dimensional manifolds considered as sigma model target spaces with eight supercharges. The resulting gauge theory of such local F-theory models are given in terms of Type IIB D7-branes wrapped intersecting F0. The four-dime

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Gou, P., L. Guerrero, and A. Romero. "The effect of panel selection and training on external preference mapping using a low number of samples / Efecto de la selección y entrenamiento de los catadores sobre la cartografía externa de preferencias, utilizando un número reducido de muestras." Food Science and Technology International 4, no. 2 (1998): 85–90. http://dx.doi.org/10.1177/108201329800400202.

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External preference mapping (PREFMAP) relates the preference data of a group of consumers to a multi-dimensional representation of the stimuli. This representation can be obtained from descriptive sensory data generated by a panel. Four vegetable oil samples were analysed. Three different stimulus spaces were obtained from generalized Procrustes analysis (GPA) of descrip tive sensory data generated by three panels (12 assessors): a non-selected panel, a selected panel and the latter after training. The preference data of each consumer was regressed against the product co-ordinates obtained fro

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Grujic, Marija, and Jasna Kavran. "Daylight utilisation potentials of highly glazed individual office spaces in Belgrade climate condition." Thermal Science 22, Suppl. 4 (2018): 1105–16. http://dx.doi.org/10.2298/tsci170531224g.

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Office buildings have high standards for lighting requirements, which greatly contribute to high lighting energy consumption. Daylight utilization is one of the means to reduce it. The goal of this paper is to evaluate daylight utilization potentials in Belgrade climate in order to generate initial design guideline for highly glazed small, individual office spaces. Daylight availability and its lighting energy implications are analyzed using computer simulation tool DIVA for Rhino. Selected individual office space is modelled as a narrow rectangular space, sidelit and highly glazed. Parametric

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Piasecki, Michał, Elżbieta Radziszewska-Zielina, Piotr Czerski, et al. "Implementation of the Indoor Environmental Quality (IEQ) Model for the Assessment of a Retrofitted Historical Masonry Building." Energies 13, no. 22 (2020): 6051. http://dx.doi.org/10.3390/en13226051.

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Achieving a satisfactory level for indoor environments of historical buildings is an ongoing problem that needs to be solved due to a large demand for deep retrofits in the whole of Europe. The implementation of the indoor environmental quality index (IEQ) to predict an occupant’s satisfaction in thermo-modernized historical buildings is a new concept which is a response to existing needs. In this article, a relevant study is provided with the intention to evaluate the indoor environmental performance of retrofitting effects in historical buildings dating back to the years 1873–1878. Consideri

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Reinke, Amanda J. "Applied Anthropology in Juridical Grey Spaces." Anthropology in Action 26, no. 2 (2019): 1–8. http://dx.doi.org/10.3167/aia.2019.260201.

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Informal justice refers to those legal practices that are traditionally outside the purview of formal law and legal systems. Since the advent of widespread social critique in the United States during the 1960s and 1970s, informal justice models have become increasingly popular and implemented in communities and within the legal system itself. The existence of informal justice mechanisms alongside and within formal justice systems in the US raises a number of questions for applied anthropologists interested in legal anthropology. In this article, I leverage four years of ethnographic fieldwork

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Zhou, Yonghua, Zhenlin Zhang, and Deng Liu. "Analysis of train movement dynamics under various temporal–spatial constraints in fixed-block railway network using extended cellular automaton model." Modern Physics Letters B 28, no. 08 (2014): 1450060. http://dx.doi.org/10.1142/s0217984914500602.

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In the fixed-block railway traffic, the trains adjust their speeds in view of their preceding allowable spaces caused by their respective front adjacent trains or specified by scheduling commands. The railway lines have the line-type speed limits within some block sections and the point-type ones at the terminals of block sections. Those speed limits originate from line conditions, scheduling commands and indications of signal equipment. This paper attempts to in detail reveal the train movement mechanism synthetically considering those temporal–spatial constraints. The proposed train movement

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LEE, SUNGGEUN, and SOONKEON NAM. "KÄHLER MODULI INFLATION AND WMAP7." International Journal of Modern Physics A 26, no. 06 (2011): 1073–96. http://dx.doi.org/10.1142/s0217751x1105155x.

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Inflationary potentials are investigated for specific models in type IIB string theory via flux compactification. As concrete models, we investigate several cases where the internal spaces are weighted projective spaces. The models we consider have two, three, or four Kähler moduli. The Kähler moduli play a role of inflaton fields and we consider the cases where only one of the moduli behaves as the inflaton field. For the cases with more than two moduli, we choose the diagonal basis for the expression of the Calabi–Yau volume, which can be written down as a function of four-cycle. With the co

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Thambinathan, Vivetha, and Elizabeth Anne Kinsella. "Decolonizing Methodologies in Qualitative Research: Creating Spaces for Transformative Praxis." International Journal of Qualitative Methods 20 (January 1, 2021): 160940692110147. http://dx.doi.org/10.1177/16094069211014766.

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Though there is no standard model or practice for what decolonizing research methodology looks like, there are ongoing scholarly conversations about theoretical foundations, principal components, and practical applications. However, as qualitative researchers, we think it is important to provide tangible ways to incorporate decolonial learning into our research methodology and overall practice. In this paper, we draw on theories of decolonization and exemplars from the literature to propose four practices that can be used by qualitative researchers: (1) exercising critical reflexivity, (2) rec

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Aquilué, Inés, Angélica Caicedo, Joan Moreno, Miquel Estrada, and Laia Pagès. "A Methodology for Assessing the Impact of Living Labs on Urban Design: The Case of the Furnish Project." Sustainability 13, no. 8 (2021): 4562. http://dx.doi.org/10.3390/su13084562.

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This paper presents a framework to support the assessment of urban design projects through Urban Living Labs (ULLs). The framework is based on the Tactical Urbanism (TU) practices and involves the use of Mobile Urban Elements (MUE) in uncertain and potentially confusing conditions (e.g., the COVID-19 context). The methodology includes the application of the Four-Phase Model (problem and ideation; development; implementation, testing and assessment; final proposal) and a quantitative and qualitative assessment. The proposed assessment criteria were developed through an evaluation according to t

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Matsuura, Joa˜o Paulo J., Kazuo Nishimoto, Michael M. Bernitsas, and Luis O. Garza-Rios. "Comparative Assessment of Hydrodynamic Models in Slow-Motion Mooring Dynamics." Journal of Offshore Mechanics and Arctic Engineering 122, no. 2 (1999): 109–17. http://dx.doi.org/10.1115/1.533732.

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The slow-motion dynamics of a turret mooring system is analyzed and compared for four of the most commonly used ship hydrodynamic maneuvering models. Each of those utilizes a different approach to model and then to calculate or measure the hydrodynamic forces and moment acting on the vessel. The four hydrodynamic maneuvering models are studied first by a physics-based analysis of each model and then by numerically comparing their prediction of equilibria, nonlinear stability analysis, bifurcation sequences, and morphogeneses of turret mooring systems. Catastrophe sets are constructed in two-di

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Wang, Chunxiang, Hengrun Zhang, Ming Yang, Xudong Wang, Lei Ye, and Chunzhao Guo. "Automatic Parking Based on a Bird's Eye View Vision System." Advances in Mechanical Engineering 6 (January 1, 2014): 847406. http://dx.doi.org/10.1155/2014/847406.

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This paper aims at realizing an automatic parking method through a bird's eye view vision system. With this method, vehicles can make robust and real-time detection and recognition of parking spaces. During parking process, the omnidirectional information of the environment can be obtained by using four on-board fisheye cameras around the vehicle, which are the main part of the bird's eye view vision system. In order to achieve this purpose, a polynomial fisheye distortion model is firstly used for camera calibration. An image mosaicking method based on the Levenberg-Marquardt algorithm is use

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M Bernardes, Christina, Patricia C Valery, Brian Arley, Gregory Pratt, Linda Medlin, and Judith A. Meiklejohn. "Empowering Voice through the Creation of a Safe Space: An Experience of Aboriginal Women in Regional Queensland." International Journal of Environmental Research and Public Health 17, no. 5 (2020): 1476. http://dx.doi.org/10.3390/ijerph17051476.

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Background: Sharing stories creates a space for respectful conversation and contributes to both knowledge and a sense of fellowship. This paper reflects on the experience of the research team in supporting a group of Aboriginal women to create safe spaces and to share their stories of healing, social and emotional wellbeing. Methods: Secondary data of a study exploring community perceptions about cancer were analysed using the holistic model of Indigenous Wellbeing developed by the Rumbalara Aboriginal Cooperative (2008). Qualitative data were collected during yarning sessions with a group of

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Boutselis, George I., Ethan N. Evans, Marcus A. Pereira, and Evangelos A. Theodorou. "Leveraging Stochasticity for Open Loop and Model Predictive Control of Spatio-Temporal Systems." Entropy 23, no. 8 (2021): 941. http://dx.doi.org/10.3390/e23080941.

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Stochastic spatio-temporal processes are prevalent across domains ranging from the modeling of plasma, turbulence in fluids to the wave function of quantum systems. This letter studies a measure-theoretic description of such systems by describing them as evolutionary processes on Hilbert spaces, and in doing so, derives a framework for spatio-temporal manipulation from fundamental thermodynamic principles. This approach yields a variational optimization framework for controlling stochastic fields. The resulting scheme is applicable to a wide class of spatio-temporal processes and can be used f

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Durand, Philippe. "Mathematical Tools to Understand the Field Theories of the Standard Model and Beyond." International Journal of Mathematics and Computers in Simulation 15 (July 28, 2021): 54–61. http://dx.doi.org/10.46300/9102.2021.15.10.

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Since Isaac Newton the understanding of the physical world is more and more complex. The Euclidean space of three dimensions , independent of time is replaced in Enstein’s vision by the Lorentzian space-time at first, then by four dimensions manifold to unify space and matter. String theorists add to space more dimensions to make their theory consistent. Complex topological invariants which characterize different kind of spaces are developed. Space is discretized at the quantum scale in the loop quantum gravity theory. A non-commutative and spectral geometry is defined from the theory of opera

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Széll, A., B. Steves, and B. Érdi. "Numerical escape criteria for a symmetric four-body model." Astronomy & Astrophysics 421, no. 2 (2004): 771–74. http://dx.doi.org/10.1051/0004-6361:20047025.

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Kim, Byeol, Yonghan Ahn, and Sanghyo Lee. "LDA-Based Model for Defect Management in Residential Buildings." Sustainability 11, no. 24 (2019): 7201. http://dx.doi.org/10.3390/su11247201.

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This study systematically analyzes various defect patterns that occur during the warranty period of residential buildings using the loss distribution approach (LDA). This paper examines 16,108 defects from 133 residential buildings where defect disputes occurred between 2008 and 2018 in South Korea. The analysis results showed that the defect losses were relatively high in reinforcement concrete (RC) work (3/5/10 years), waterproof work (5 years), and finish work (2 years). It is shown that RC work has a high frequency of defects, such as cracks in concrete in public spaces affected by externa

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Ydri, Badis, Rachid Ahmim та Adel Bouchareb. "Wilson RG of noncommutative Φ44". International Journal of Modern Physics A 30, № 33 (2015): 1550195. http://dx.doi.org/10.1142/s0217751x1550195x.

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We present a study of phi-four theory on noncommutative spaces using a combination of the Wilson renormalization group recursion formula and the solution to the zero dimensional vector/matrix models at large N. Three fixed points are identified. The matrix model [Formula: see text] fixed point which describes the disordered-to-nonuniform-ordered transition. The Wilson–Fisher fixed point at [Formula: see text] which describes the disordered-to-uniform-ordered transition, and a noncommutative Wilson–Fisher fixed point at a maximum value of [Formula: see text] which is associated with the transit

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BIEDENHARN, L. C., H. VAN DAM, G. MARMO, et al. "CLASSICAL MODELS FOR REGGE TRAJECTORIES." International Journal of Modern Physics A 02, no. 05 (1987): 1567–89. http://dx.doi.org/10.1142/s0217751x8700082x.

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Two classical models for particles with internal structure and which describe Regge trajectories are developed. The remarkable geometric and other properties of the two internal spaces are highlighted. It is shown that the conditions of positive time-like four-velocity and energy momentum for the classical system imply strong and physically reasonable conditions on the Regge mass-spin relationship.

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Beigi, Salman. "Separation of quantum, spatial quantum, and approximate quantum correlations." Quantum 5 (January 28, 2021): 389. http://dx.doi.org/10.22331/q-2021-01-28-389.

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Quantum nonlocal correlations are generated by implementation of local quantum measurements on spatially separated quantum subsystems. Depending on the underlying mathematical model, various notions of sets of quantum correlations can be defined. In this paper we prove separations of such sets of quantum correlations. In particular, we show that the set of bipartite quantum correlations with four binary measurements per party becomes strictly smaller once we restrict the local Hilbert spaces to be finite dimensional, i.e., Cq(4,4,2,2)≠Cqs(4,4,2,2). We also prove non-closure of the set of bipar

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