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Littérature scientifique sur le sujet « Time-space interaction »

Auteur : Grafiati

Publié le 29 mars 2025

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Articles de revues sur le sujet "Time-space interaction"

Chukova, S., et V. E. Gauzelman. « Size Distortions : Space-Time Interaction ». Perception 26, n^o 1_suppl (août 1997) : 114. http://dx.doi.org/10.1068/v970102.

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We used a modified method of constant stimuli to measure spatial interval discrimination thresholds. Horizontal intervals were indicated by a pair of dark vertical lines on a bright background. In each experimental session, thresholds were measured for seven reference stimuli, presented in random order. Reference stimulus separations varied from 9.52 to 16.66 min−1 in increments of 1.95 min−1. The interstimulus interval (ISI) was varied (50, 200, 500, and 1000 ms) between experimental sessions. Stimulus duration was constant at 500 ms. For all ISI durations, the point of subjective equality (PSE) for small spatial separation references was less than physical equality, the PSE for larger separations was greater, and the PSE was close to physical equality for reference stimuli in the centre of the range. This result is consistent with the modular model [V D Glezer, 1995 Vision and Mind (Mahwah, NJ: Lawrence Erlbaum)]. However, the magnitude of the PSE shifts was affected by the ISI duration: at 50 and 1000 ms, the small spatial intervals were more underestimated and the large ones were more overestimated than at 200 or 500 ms. The discriminability thresholds based on the slopes of the psychometric functions varied inversely with the ISI duration, but at the ISI of 1000 ms increased again. These findings demonstrate that in the sequential mode of presentation the temporal separation can be as important as the spatial separation distribution in determining the PSE. This suggests that these size distortions result more from memory processing than from spatial processing.

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Ciobanu, Gabriel. « Interaction in Time and Space ». Electronic Notes in Theoretical Computer Science 203, n^o 3 (mai 2008) : 5–18. http://dx.doi.org/10.1016/j.entcs.2008.04.083.

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Mead, Pamela, et Chris Pacione. « Time and space ». Interactions 3, n^o 2 (mars 1996) : 68–77. http://dx.doi.org/10.1145/227181.227188.

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TAKIZAWA, KENJI, et TAYFUN E. TEZDUYAR. « SPACE–TIME FLUID–STRUCTURE INTERACTION METHODS ». Mathematical Models and Methods in Applied Sciences 22, supp02 (25 juillet 2012) : 1230001. http://dx.doi.org/10.1142/s0218202512300013.

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Since its introduction in 1991 for computation of flow problems with moving boundaries and interfaces, the Deforming-Spatial-Domain/Stabilized Space–Time (DSD/SST) formulation has been applied to a diverse set of challenging problems. The classes of problems computed include free-surface and two-fluid flows, fluid–object, fluid–particle and fluid–structure interaction (FSI), and flows with mechanical components in fast, linear or rotational relative motion. The DSD/SST formulation, as a core technology, is being used for some of the most challenging FSI problems, including parachute modeling and arterial FSI. Versions of the DSD/SST formulation introduced in recent years serve as lower-cost alternatives. More recent variational multiscale (VMS) version, which is called DSD/SST-VMST (and also ST-VMS), has brought better computational accuracy and serves as a reliable turbulence model. Special space–time FSI techniques introduced for specific classes of problems, such as parachute modeling and arterial FSI, have increased the scope and accuracy of the FSI modeling in those classes of computations. This paper provides an overview of the core space–time FSI technique, its recent versions, and the special space–time FSI techniques. The paper includes test computations with the DSD/SST-VMST technique.

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Strydom, Tanya, Michael D. Catchen, Francis Banville, Dominique Caron, Gabriel Dansereau, Philippe Desjardins-Proulx, Norma R. Forero-Muñoz et al. « A roadmap towards predicting species interaction networks (across space and time) ». Philosophical Transactions of the Royal Society B : Biological Sciences 376, n^o 1837 (20 septembre 2021) : 20210063. http://dx.doi.org/10.1098/rstb.2021.0063.

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Networks of species interactions underpin numerous ecosystem processes, but comprehensively sampling these interactions is difficult. Interactions intrinsically vary across space and time, and given the number of species that compose ecological communities, it can be tough to distinguish between a true negative (where two species never interact) from a false negative (where two species have not been observed interacting even though they actually do). Assessing the likelihood of interactions between species is an imperative for several fields of ecology. This means that to predict interactions between species—and to describe the structure, variation, and change of the ecological networks they form—we need to rely on modelling tools. Here, we provide a proof-of-concept, where we show how a simple neural network model makes accurate predictions about species interactions given limited data. We then assess the challenges and opportunities associated with improving interaction predictions, and provide a conceptual roadmap forward towards predictive models of ecological networks that is explicitly spatial and temporal. We conclude with a brief primer on the relevant methods and tools needed to start building these models, which we hope will guide this research programme forward. This article is part of the theme issue ‘Infectious disease macroecology: parasite diversity and dynamics across the globe’.

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Portnov, Yu A. « Gravitational interaction in seven-dimensional space-time ». Gravitation and Cosmology 17, n^o 2 (avril 2011) : 152–60. http://dx.doi.org/10.1134/s0202289311020186.

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Metaxas, Dimitrios. « Instanton interaction in de Sitter space–time ». International Journal of Modern Physics A 33, n^o 33 (30 novembre 2018) : 1850200. http://dx.doi.org/10.1142/s0217751x18502007.

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Because of the presence of a cosmological horizon, the dilute instanton gas approximation used for the derivation of the Coleman–De Luccia tunneling rate in de Sitter space–time receives additional contributions due to the finite instanton separation. Here, I calculate the first corrections to the vacuum decay rate that arise from this effect and depend on the parameters of the theory and the cosmological constant of the background space–time.

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Arfaei, H., et D. Kamani. « Mixed branes interaction in compact space-time ». Nuclear Physics B 561, n^o 1-2 (novembre 1999) : 57–76. http://dx.doi.org/10.1016/s0550-3213(99)00534-9.

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Takizawa, Kenji, et Tayfun E. Tezduyar. « Multiscale space–time fluid–structure interaction techniques ». Computational Mechanics 48, n^o 3 (5 février 2011) : 247–67. http://dx.doi.org/10.1007/s00466-011-0571-z.

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Miller, Harvey J. « Necessary Space—Time Conditions for Human Interaction ». Environment and Planning B : Planning and Design 32, n^o 3 (juin 2005) : 381–401. http://dx.doi.org/10.1068/b31154.

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Key scientific and application questions concern the relationships between individual-level activities and their effects on broader human phenomena, such as transportation systems and cities. Continuing advances in geographic information science, location-aware technologies, and geosimulation methods offer great potential for observational and simulation studies of human activities at high levels of spatiotemporal resolution. The author contributes by developing rigorous statements of the necessary space–time conditions for human interaction by extending a measurement theory for time geography. The extended measurement theory identifies necessary conditions both for physical and for virtual interaction. The theory suggests elegant and tractable solutions that can be derived from data available from location-aware technologies or geosimulation methods. These conditions and their solutions could be used to infer the possibilities for human interaction from detailed space–time trajectories and prisms generated from observation or simulation studies.

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Thèses sur le sujet "Time-space interaction"

Redig, Frank, Sylvie Roelly et Wioletta Ruszel. « Short-time Gibbsianness for infinite-dimensional diffusions with space-time interaction ». Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2011/4951/.

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We consider a class of infinite-dimensional diffusions where the interaction between the components is both spatial and temporal. We start the system from a Gibbs measure with finiterange uniformly bounded interaction. Under suitable conditions on the drift, we prove that there exists t0 > 0 such that the distribution at time t = t0 is a Gibbs measure with absolutely summable interaction. The main tool is a cluster expansion of both the initial interaction and certain time-reversed Girsanov factors coming from the dynamics.

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Roelly, Sylvie, et Wioletta M. Ruszel. « Propagation of Gibbsianness for infinite-dimensional diffusions with space-time interaction ». Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2013/6901/.

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We consider infinite-dimensional diffusions where the interaction between the coordinates has a finite extent both in space and time. In particular, it is not supposed to be smooth or Markov. The initial state of the system is Gibbs, given by a strong summable interaction. If the strongness of this initial interaction is lower than a suitable level, and if the dynamical interaction is bounded from above in a right way, we prove that the law of the diffusion at any time t is a Gibbs measure with absolutely summable interaction. The main tool is a cluster expansion in space uniformly in time of the Girsanov factor coming from the dynamics and exponential ergodicity of the free dynamics to an equilibrium product measure.

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Nagai, Toshiki. « Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems ». Thesis, University of Colorado at Boulder, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its applications to the fluid-structure interaction (FSI) analysis. The Heaviside-enriched XFEM is a promising method to discretize partial differential equations with discontinuities in space. However, significant approximation errors are introduced by time stepping schemes when the interface geometry changes in time. The proposed space-time XFEM applies the finite element discretization and the Heaviside enrichment in both space and time with elements forming a space-time slab. A simple space-time scheme is introduced to integrate the weak form of the governing equations. This scheme considers spatial intersection configuration at multiple temporal integration points. Standard spatial integration techniques can be applied for each spatial configuration. Nitsche's method and the face-oriented ghost-penalty method are extended to the proposed space-time XFEM formulation. The stability, accuracy and flexibility of the space-time XFEM for various interface conditions including moving interfaces are demonstrated with structural and fluid problems. Moreover, the space-time XFEM enables analyzing complex FSI problems using moving interfaces, such as FSI with contact. Two FSI methods using moving interfaces (full-Eulerian FSI and Lagrangian-immersed FSI) are studied. The Lagrangian-immersed FSI method is a mixed formulation of Lagrangian and Eulerian descriptions. As solid and fluid meshes are independently defined, the FSI is computed between non-matching interfaces based on Nitsche's method and projection techniques adopted from computational contact mechanics. The stabilized Lagrange multiplier method is used for contact. Numerical examples of FSI and FSI-contact problems provide insight into the characteristics of the combination of the space-time XFEM and the Lagrangian-immersed FSI method. The proposed combination is a promising method which has the versatility for various multi-physics simulations and the applicability such as optimization.

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Celik, Haris. « Identication and Prediction of Discrete-Time Bilinear State-Space Models : Interaction Matrices and Superstates ». Thesis, KTH, Reglerteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105141.

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In this master thesis, an extension of the interaction matrix formulation to the discrete-time bilinear state-space model is derived. Several identication techniques are presented from this formulation to identify the bilinear state-space matrices using a superstate vector, derived from a single set of su-ciently rich input-output measurements. The initial state can be non-zero and unknown. Unlike other approaches, no specialized inputs are required, such as sinusoidal or white inputs, or duration-varying unit pulses involving multiple experiments. For that reason, the bilinear state-space identication problem is di-cult to solve, since it can be seen as a linear time-varying system with input-dependent system matrix or state-dependent input-influence matrix. The resultant input-output map from this state-space formulation can be used for output prediction. A relationship between the coe-cients of this input-output map and the bilinear state-space model matrices is obtained via two interaction matrices, corresponding to the linear and bilinear portions of the model, respectively. Numerical examples are provided to illustrate these bilinear state-space model identication techniques and the input-output model identication method. It is concluded that the proposed identication algorithms can correctly identify the original bilinear state-space model, and the identied input-output map correctly predict its system output response, despite the fact that the interaction matrices are only implicitly assumed to exist.

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DAL, MOLIN Anna. « Interaction between mechanism of attention selection in space and time : Behavioural and electrophysiological evidence ». Doctoral thesis, Università degli Studi di Verona, 2009. http://hdl.handle.net/11562/337444.

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I meccanismi attentivi consentono di selezionare dall'ambiente circostante le informazioni utili allosvolgimento di un determinato compito. Negli ultimi trenta anni, i processi coinvolti nella selezionedi informazioni di natura spaziale sono stati ampiamente investigati, mentre rimangono ancora dachiarire i meccanismi coinvolti negli aspetti di selezione temporale. I tre esperimenti riportatiall'interno di questa tesi sono volti ad indagare alcuni degli aspetti legati alla capacità di selezionaregli eventi nel tempo ed in che modo gli aspetti temporali e quelli spaziali interagiscono tra loro.Nel primo esperimento è stato impiegato un compito di Giudizio di Ordine Temporale (TOJ) perinvestigare la relazione esistente tra disturbi di selezione nello spazio e nel tempo in pazienti coneminegligenza spaziale unilaterale. Una forte compromissione dei meccanismi di selezione neltempo è stata rilevata per le coppie di stimoli presentate in porzioni dello spazio in cui il deficitspaziale è più marcato, suggerendo l'esistenza una relazione tra gli aspetti spaziali e quelli temporalinella modulazione del deficit.Nel secondo e nel terzo esperimento è stato investigato l'orientamento dell'attenzione nel tempoutilizzando stimoli che, grazie ad un movimento con velocità regolare o irregolare, rendonopossibile il generarsi di aspettative temporali e di verificare cosa avviene quando tali aspettativevengono disattese. La regolarità del movimento si è rivelato essere un indice importante nelgenerare aspettative temporali che a loro volta influenzano profondamente la performancediminuendo sensibilmente la velocità di risposta del soggetto. Inoltre, la registrazione dei potenzialievocati ha evidenziato come aspettative spaziali e temporali interagiscano influenzando l'analisidello stimolo fin dalle prime fasi di elaborazione.
The study of mechanisms involved in spatial attention is one of the most investigated field inmodern neuroscience, but in the last years a growing interest has been devoted to unveil themechanisms concerning also the temporal aspects of attention. In this thesis three experiment arereported that tried to cast more light on the temporal aspects of attention and on the relationshipbetween spatial and temporal attentional mechanisms.In the first experiment the relationship between spatial and temporal deficit in selective visualattention has been investigated in a group of neglect patients using a temporal order judgement task(TOJ). The main finding is a stronger impairment in temporal selection for spatial position in whichthe attention selection is more impaired, suggesting an interaction between the two aspects in themodulation of the deficit.The second and the third experiment investigated temporal expectations generated by a regularrhythm. In particular, the impact of exogenous and endogenous temporal expectation has beencompared in a discrimination task, revealing the pervasive effect of regularity of movement andspeed in orienting attention in time. Moreover, it has been confirmed the combined effect of spatialand temporal expectations in modulation of electrophysiological response.These results suggest the existence of an interaction between spatial and temporal mechanisms ofattention.

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Kaulicke, Peter. « Space and Time in the Formative Period : Some Final Reflections ». Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/113584.

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These final reflections stress the relevance of this substantial collection of papers presented in both volumes of the Boletín. Monumental architecture is particularly important with early beginnings, long construction sequences, and, as such, testimony of local histories, identities and memories. It transmits cosmological and cosmogonic ideas as ceremonial centers and organizes the landscape, and thus can be defined as central places in an economic, political and social sense. As such, it is of major relevance to the establishment of interaction spheres.
Las reflexiones finales enfatizan la relevancia de esta colección sustancial de contribuciones. De particular importancia es la arquitectura monumental, que se inicia de manera muy temprana y se presenta en forma de secuencias. Esta arquitectura, por lo tanto, define historias locales, transmite identidad, memoria, así como ideas cosmológicas y cosmogónicas en su calidad de centro ceremonial, organiza el paisaje y se establece como lugar central en un sentido económico, social y político. Como tal desempeña un papel sustancial en las esferas de interacción.

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Aigal, Sahaja [Verfasser], et Winfried [Akademischer Betreuer] Römer. « Elucidation of the host cell membrane associated interaction partners of Pseudomonas aeruginosa and its lectins (in space and time) ». Freiburg : Universität, 2018. http://d-nb.info/1202438172/34.

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Jamison, John S. « Time and Space Resolved Spin-Heat Transport in the Magnetic Insulator Yttrium Iron Garnet ». The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586740671277489.

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Birch, John F. « Providence and Space-Time : Rethinking God's Relation to the World Through the Eyes of John Polkinghorne ». University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1607005827363861.

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Rodrigues, Jussara Martins. « Da ausência de preservação do patrimônio histórico das praças centrais de Itumbiara (GO) ». Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8768.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2018-08-08T11:18:57Z No. of bitstreams: 2 Dissertação - Jussara Martins Rodrigues - 2018.pdf: 4351171 bytes, checksum: 13ca12fc41ae1f296d8165fe9722e735 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-08-08T12:44:39Z (GMT) No. of bitstreams: 2 Dissertação - Jussara Martins Rodrigues - 2018.pdf: 4351171 bytes, checksum: 13ca12fc41ae1f296d8165fe9722e735 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Made available in DSpace on 2018-08-08T12:44:39Z (GMT). No. of bitstreams: 2 Dissertação - Jussara Martins Rodrigues - 2018.pdf: 4351171 bytes, checksum: 13ca12fc41ae1f296d8165fe9722e735 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-03-29
Commercial expansion has now become a form of predatory occupation for the human being, in which urban reality was restructure into a new spatial problem. This analysis based on the evaluation of the bilateral situation: empty / occupied in the cities that was focus on the latent modernization of the interior of Goiás. Therefore, when assessing the definition of occupation of these spaces and the contrast of this with the definition of urban center, allows the understanding of the value given to the occupation in the cities of Goiás and what this occupation represents for the population and his culture. This analysis seeks to understand the logic of the occupations of the central squares of the city of Itumbiara (GO) and, in this context, seeks the understanding of social relations in small cities in counterpoint with the urban centers establishing the perception of place and seeking reading according to the referential distanced from embedded paradigms of space / place in search of a wider perception of the interaction between the human being and the environment in which he is inserted.
A expansão comercial tem se revelado na atualidade uma forma de ocupação predatória para o ser humano, na qual a realidade urbana se reestrutura em uma nova problemática espacial. Desta feita, esta análise se pauta pela avaliação da conjuntura bilateral: vazio/ocupado nas cidades voltadas para a latente modernização do interior de Goiás. Isso pois que ao avaliar a definição de ocupação destes espaços e a contraposição desta com a definição de centro urbano, permite a compreensão do valor dado a ocupação nas cidades do interior de Goiás e o que esta ocupação representa para a população e sua cultura. Tal análise busca compreender a lógica das ocupações das praças centrais da cidade de Itumbiara (GO) e, neste contexto, busca a compreensão das relações sociais nas pequenas cidades em contraponto com os centros urbanos estabelecendo a percepção de lugar e buscando a leitura segundo o referencial distanciado de paradigmas engessados do espaço/ lugar em busca de uma percepção mais ampla da interação entre o ser humano e o meio no qual ele está inserido.

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Livres sur le sujet "Time-space interaction"

Massey, Doreen Barbara. Space, place and gender. Cambridge : Polity Press, 1994.

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Vadali, Srinivas R. Near minimum-time maneuvers of the Advanced Space Structures Technology Research Experiment (ASTREX) test article : theory and experiments. Hampton, Va : Langley Research Center, 1994.

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Qvortrup, Lars. Virtual space : Spatiality in virtual inhabited 3D worlds. London : Springer, 2002.

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Massey, Doreen B. Space, place, and gender. Minneapolis : University of Minnesota Press, 1994.

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Pennsylvania State University. Center for Studies in Landscape History, dir. Gendered landscapes : An interdisciplinary exploration of past place and space. University Park, PA : Center for Studies in Landscape History, Pennsylvania State University, 2000.

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Barker, Timothy Scott. Time and the digital : Connecting technology, aesthetics, and a process philosophy of time. Hanover, N.H : Dartmouth College Press, 2012.

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Lars, Qvortrup, dir. Virtual space : Spatiality in virtual inhabited 3D worlds. London : Springer, 2002.

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John, Urry, dir. Economies of signs and space. London : Sage, 1994.

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Thomas, R. W. Space-time interactions in multiregion disease modelling. Manchester : Spatial Policy Analysis, School of Geography, University of Manchester, 2001.

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Hollenstein, Tom. State Space Grids : Depicting Dynamics Across Development. Boston, MA : Springer US, 2013.

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Chapitres de livres sur le sujet "Time-space interaction"

Shekhar, Shashi, et Hui Xiong. « Interaction, Space-Time ». Dans Encyclopedia of GIS, 586. Boston, MA : Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-35973-1_643.

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Shekhar, Shashi, et Hui Xiong. « Space-Time Interaction ». Dans Encyclopedia of GIS, 1072. Boston, MA : Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-35973-1_1234.

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Sohnius, Martin F. « Supersymmetry in Two Space-Time Dimensions ». Dans The Fundamental Interaction, 145–63. Boston, MA : Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-9522-9_8.

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Curry, Leslie. « Trade as Spatial Interaction, and Central Places ». Dans Transformations Through Space and Time, 27–58. Dordrecht : Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4430-5_3.

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Lam, Kevin, et Robert Spence. « Image Browsing : a Space-Time Trade-off ». Dans Human-Computer Interaction INTERACT ’97, 611–12. Boston, MA : Springer US, 1997. http://dx.doi.org/10.1007/978-0-387-35175-9_105.

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Lombardo, Silvana, et Sylvie Occelli. « Telematics, Location and Interaction Flows : The Telemaco Model ». Dans Innovative Behaviour in Space and Time, 144–71. Berlin, Heidelberg : Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60720-2_8.

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Takizawa, Kenji, et Tayfun E. Tezduyar. « New Directions in Space–Time Computational Methods ». Dans Advances in Computational Fluid-Structure Interaction and Flow Simulation, 159–78. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40827-9_13.

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Šufliarsky, Adam, Günter Walllner et Simone Kriglstein. « Through Space and Time : Spatio-Temporal Visualization of MOBA Matches ». Dans Human-Computer Interaction – INTERACT 2023, 167–89. Cham : Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-42283-6_9.

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Tanaka, Fumihiko. « Polymer-surfactant interaction in thermoreversible gels ». Dans Molecular Interactions and Time-Space Organization in Macromolecular Systems, 81–89. Berlin, Heidelberg : Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-60226-9_9.

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Ganguli, G., H. Romero et J. Fedder. « Interaction between global MHD and kinetic processes in the magnetotail ». Dans Solar System Plasmas in Space and Time, 135–48. Washington, D. C. : American Geophysical Union, 1994. http://dx.doi.org/10.1029/gm084p0135.

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Actes de conférences sur le sujet "Time-space interaction"

Marrou, Jean Paul, Jaime Cascante-Vindas, Paula Rodrigo-Martínez, Martina Delgado-Pinar, Antonio Díez, Salvador Gil et Miguel V. Andrés. « Multiplexed, space distributed chemo/biosensors by means of time resolved, in-fiber acousto-optic interaction ». Dans Optical Sensing and Precision Metrology, sous la direction de Jacob Scheuer, 50. SPIE, 2025. https://doi.org/10.1117/12.3041831.

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Stephenson, James, et Charles Tinney. « Extracting Blade Vortex Interactions using Continuous Wavelet Transforms ». Dans Vertical Flight Society 70th Annual Forum & Technology Display, 1–20. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9416.

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An extraction method is proposed to investigate blade vortex interaction noise emitted during helicopter transient maneuvering flight. The extraction method allows for the investigation of blade vortex interactions, independent of other sound sources. It is based on filtering the spectral representation of experimentally acquired full-scale helicopter acoustic data. The data is first transformed into time-frequency space through the wavelet transformation, with blade vortex interactions identified and filtered by their high amplitude, high frequency impulsive content. The filtered wavelet coefficients are then inverse transformed to create a pressure signature solely related to blade vortex interactions. Analysis on a synthetic data set is conducted, and it is shown that blade vortex interactions can be accurately extracted so long as the blade vortex interaction peak energy signal is greater or equal to the energy in the main rotor harmonic. A brief analysis shows that the extraction method performs admirably throughout a fast advancing side roll maneuver. Using this method, it was shown that peak blade vortex interaction noise levels are linked directly to the roll rate of the vehicle, and are directed towards the retreating side during the transient portion of the maneuver.

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Anisimova, Oksana. « Features of interpersonal interaction of higher school teachers ». Dans PERSONALITY IN SPACE AND TIME. SmolGU, 2021. http://dx.doi.org/10.35785/978-5-88018-430-9-2021-10-8-14.

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В данной статье рассматривается содержание понятия «межличностное взаимодействие педагогов высшей школы». Выявлены показатели межличностных отношений педагогов высшей школы, с учетом которых у субъектов процесса эмоциональное благополучие и профессиональная деятельность зависят от психологического настроя и положительного микроклимата, создаваемого в коллективе

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Mackay, Wendy. « Session details : Interaction with time and space ». Dans UIST08 : The 21st Annual ACM Symposium on User Interface Software and Technology. New York, NY, USA : ACM, 2008. http://dx.doi.org/10.1145/3260867.

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Rokushima, Katsu, Jiro Yamakita et Shizuo Mori. « Lightwave Interaction In Space-Time Periodic Anisotropic Media ». Dans 14th Congress of the International Commission for Optics, sous la direction de Henri H. Arsenault. SPIE, 1987. http://dx.doi.org/10.1117/12.967162.

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Khimin, D., J. Roth et T. Wick. « Space-time fluid-structure interaction : formulation and dG(0) time discretization ». Dans 8th European Congress on Computational Methods in Applied Sciences and Engineering. CIMNE, 2022. http://dx.doi.org/10.23967/eccomas.2022.257.

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Chu, Yuchen, et Zeshi Yang. « Real-time Diverse Motion In-betweening with Space-time Control ». Dans MIG '24 : The 17th ACM SIGGRAPH Conference on Motion, Interaction, and Games, 1–8. New York, NY, USA : ACM, 2024. http://dx.doi.org/10.1145/3677388.3696327.

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Masud, Arif. « A space-time finite element formulation for fluid-structure interaction ». Dans 6th Symposium on Multidisciplinary Analysis and Optimization. Reston, Virigina : American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-4049.

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Winck, Ryder C., Sean M. Sketch, Elliot W. Hawkes, David L. Christensen, Hao Jiang, Mark R. Cutkosky et Allison M. Okamura. « Time-delayed teleoperation for interaction with moving objects in space ». Dans 2014 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2014. http://dx.doi.org/10.1109/icra.2014.6907736.

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Jorge, Ana María, Sergio Serra et Teresa Chambel. « Interactive Visualizations of Video Tours in Space and Time ». Dans Proceedings of the 28th International BCS Human Computer Interaction Conference (HCI 2014). BCS Learning & Development, 2014. http://dx.doi.org/10.14236/ewic/hci2014.53.

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Rapports d'organisations sur le sujet "Time-space interaction"

Maydykovskiy, Igor, et Petra Užpelkis. The Concept of space-time quanta in future technologies. Intellectual Archive, décembre 2020. http://dx.doi.org/10.32370/iaj.2464.

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The article discusses the possibility of using the technological advantages that appear in connection with the discovery of the physical essence of Time and new interpretation of the structure of space in the form of space-time quanta. One of the problems that can be successfully solved on the basis of the new physical model is the problem of establishing the true nature of gravity. The solution to this problem is directly related to the implementation of the idea of unsupported motion based on the interaction in a certain way of the created asymmetric interference structure of longitudinal waves with the natural structure of spatial frequencies.

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Yaremchuk, Olesya. TRAVEL ANTHROPOLOGY IN JOURNALISM : HISTORY AND PRACTICAL METHODS. Ivan Franko National University of Lviv, février 2021. http://dx.doi.org/10.30970/vjo.2021.49.11069.

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Our study’s main object is travel anthropology, the branch of science that studies the history and nature of man, socio-cultural space, social relations, and structures by gathering information during short and long journeys. The publication aims to research the theoretical foundations and genesis of travel anthropology, outline its fundamental principles, and highlight interaction with related sciences. The article’s defining objectives are the analysis of the synthesis of fundamental research approaches in travel anthropology and their implementation in journalism. When we analyze what methods are used by modern authors, also called «cultural observers», we can return to the localization strategy, namely the centering of the culture around a particular place, village, or another spatial object. It is about the participants-observers and how the workplace is limited in space and time and the broader concept of fieldwork. Some disciplinary practices are confused with today’s complex, interactive cultural conjunctures, leading us to think of a laboratory of controlled observations. Indeed, disciplinary approaches have changed since Malinowski’s time. Based on the experience of fieldwork of Svitlana Aleksievich, Katarzyna Kwiatkowska-Moskalewicz, or Malgorzata Reimer, we can conclude that in modern journalism, where the tools of travel anthropology are used, the practical methods of complexity, reflexivity, principles of openness, and semiotics are decisive. Their authors implement both for stable localization and for a prevailing transition.

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Volkmer, Ingrid. Social media and COVID-19 : A global study of digital crisis interaction among Gen Z and millennials. University of Melbourne, novembre 2021. http://dx.doi.org/10.46580/124367.

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The COVID-19 pandemic is revealing that global big tech platforms and social media are core sites for continuous engagement with crisis content for young citizens. This study included twenty-four countries from all continents at the time of the heightened COVID-19 crisis, and our survey targeted 18-40 year olds, Millennials and Gen Zs – overall n = 23,483 respondents. Outcomes show that for young citizens across continents, crisis communication is not just about press briefings. Instead, crisis communication is continuous interaction and engagement across their multiple source environments. Young citizens navigate social media, national media, search sites and messaging apps, they engage with peer communities, science and health experts and – across all countries – substantially with the social media content of the World Health Organization (WHO). Overall, they create their own individual crisis narrative based on the sources they use and the insights they select. This report outlines these new crisis communication dimensions within a transnational social media space and offers numerous suggestions for incorporating social media in crisis response strategies.

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Collins, Clarence O., et Tyler J. Hesser. altWIZ : A System for Satellite Radar Altimeter Evaluation of Modeled Wave Heights. Engineer Research and Development Center (U.S.), février 2021. http://dx.doi.org/10.21079/11681/39699.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes the design and implementation of a wave model evaluation system, altWIZ, which uses wave height observations from operational satellite radar altimeters. The altWIZ system utilizes two recently released altimeter databases: Ribal and Young (2019) and European Space Agency Sea State Climate Change Initiative v.1.1 level 2 (Dodet et al. 2020). The system facilitates model evaluation against 1 Hz1 altimeter data or a product created by averaging altimeter data in space and time around model grid points. The system allows, for the first time, quantitative analysis of spatial model errors within the U.S. Army Corps of Engineers (USACE) Wave Information Study (WIS) 30+ year hindcast for coastal United States. The system is demonstrated on the WIS 2017 Atlantic hindcast, using a 1/2° basin scale grid and a 1/4° regional grid of the East Coast. Consistent spatial patterns of increased bias and root-mean-square-error are exposed. Seasonal strengthening and weakening of these spatial patterns are found, related to the seasonal variation of wave energy. Some model errors correspond to areas known for high currents, and thus wave-current interaction. In conjunction with the model comparison, additional functions for pairing altimeter measurements with buoy data and storm tracks have been built. Appendices give information on the code access (Appendix I), organization and files (Appendix II), example usage (Appendix III), and demonstrating options (Appendix IV).

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Mahmoudi, Farhad, Mahtab Mokarram, Sadegh Sabouhi, Sara Hashemi, Parastoo Saberi et Hadi Zamanian. Application of digital health for improving medication adherence in MS patients. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, octobre 2021. http://dx.doi.org/10.37766/inplasy2021.10.0058.

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Review question / Objective: The aim of this study is to evaluate the efficacy of digital health interventions in monitoring and improving medication adherence in Multiple Sclerosis patients. Condition being studied: Multiple sclerosis (MS) is the most prevalent chronic inflammatory disease of the central nervous system (CNS), which leads to focal lesions in the white matter, characterized by selective primary demyelination with partial preservation of axons and reactive astrocytic gliosis. The disease is thought to be due to a complex interaction between different genetic and environmental factors. The prevalence of MS is rising all over the world, due on one hand to earlier diagnosis and prolonged survival, and on the other to a true increase in incidence of the disease. The diagnosis of MS remains clinical despite recent advances in diagnostics and relies on demonstrating dissemination in space and time while excluding alternative diagnoses.

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Anwar, Nausheen H., Arabella Fraser, Joe Mulligan, Gulnaz Anjum et Mathews Wakhungu. Just and Resilient Infrastructures in Pakistan and Kenya. Institute of Development Studies, août 2024. http://dx.doi.org/10.19088/ids.2024.025.

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The relationship between infrastructure development and intensifying climate crisis is generating new cycles of 24-hour risks in the urban global South. These risks are particularly severe in low-income neighbourhoods and informal settlements. They create complex microgeographies of risk, unfolding across time, space, multiple scales, and intersectionality, compounding gendered vulnerabilities. Complex interactions between risks and infrastructure development are overlooked in research and policy action at the urban scale. Research from Karachi and Nairobi points to opportunities to build resilient infrastructures that strengthen and support community networks and inclusion.

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Babenko, Vitalina O., Roman M. Yatsenko, Pavel D. Migunov et Abdel-Badeeh M. Salem. MarkHub Cloud Online Editor as a modern web-based book creation tool. [б. в.], juillet 2020. http://dx.doi.org/10.31812/123456789/3858.

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The main criterion for the competitiveness of a teacher or expert in the field of science is a good ability to present their knowledge to students in an interactive form without spending a lot of time in preparation. The purpose of the study is to analyze modern editors to create educational information content in the modern educational space and to present a modern tool for creating web books based on the latest IT technologies. Modern editors of web material creation have been analyzed, statistics of situations on mastering of knowledge by listeners, using interactive methods of information submission have been investigated. Using the WYSIWYG concept and analyzing modern information tools for presenting graphic material, an effective tool for teaching interactive web material was presented. An adapted version of the MarkHub online editor based on cloud technologies is presented. Using MarkHub cloud-based online editor for the unified development of educational content can significantly increase the author’s productivity in the content creation process. At the same time, the effects of reducing the time spent on formatting the external presentation of the content, making synchronous changes to different versions of the content, tracking the versions of the content, organizing remote teamwork in the network environment are achieved.

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Morkun, Vladimir S., Natalia V. Morkun et Andrey V. Pikilnyak. Augmented reality as a tool for visualization of ultrasound propagation in heterogeneous media based on the k-space method. [б. в.], février 2020. http://dx.doi.org/10.31812/123456789/3757.

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For programming the AR tools, interactive objects and creating the markers, the method of fiber spaces (k-space) for modeling of ultrasonic wave propagation in an inhomogeneous medium using coarse grids, with maintaining the required accuracy was used. The algorithm and tools of augmented reality were introduced into the adaptive control system of the pulp gas phase in the iron ore flotation process using a control action on the basis of high-energy ultrasound dynamic effects generated by ultrasonic phased arrays. The tools of augmented reality based on k-space methods allow to facilitate wider adoption of ultrasound technology and visualize the ultra-sound propagation in heterogeneous media by providing a specific correspondence between the ultrasound data acquired in real- time and a sufficiently detailed augmented 3D scene. The tools of augmented reality allow seeing the field of ultrasound propagation, its characteristics, as well as the effect of the dynamic effects of ultrasound on the change in the gas phase during the flotation process.

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Yermiyahu, Uri, Thomas Kinraide et Uri Mingelgrin. Role of Binding to the Root Surface and Electrostatic Attraction in the Uptake of Heavy Metal by Plants. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7586482.bard.

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The principal accomplishment of the research supported by BARD was progress toward a comprehensive view of cell-surface electrical effects (both in cell walls [CWs] and at plasma membrane [PM] surfaces) upon ion uptake, intoxication, and amelioration. The research confirmed that electrostatic models (e.g., Gouy-Chapman-Stern [G-C-S]), with parameter values contributed by us, successfully predict ion behavior at cell surfaces. Specific research objectives 1. To characterize the sorption of selected heavy metals (Cu, Zn, Pb, Cd) to the root PM in the presence of other cations and organic ligands (citric and humic acids). 2. To compute the parameters of a G-C-S model for heavy-metal sorption to the root PM. 3. To characterize the accumulation of selected heavy metals in various plant parts. 4. To determine whether model-computed ion binding or ion activities at root PM surfaces predict heavy-metal accumulation in whole roots, root tips, or plant shoots. 5. To determine whether measured ion binding by protoplast-free roots (i.e., root CWs) predicts heavy-metal accumulation in whole roots, root tips, or plant shoots. 6. To correlate growth inhibition, and other toxic responses, with the measured and computed factors mentioned above. 7. To determine whether genotypic differences in heavy-metal accumulation and toxic responses correlate with genotypic differences in parameters of the G-C-S model. Of the original objectives, all except for objective 7 were met. Work performed to meet the other objectives, and necessitated on the basis of experimental findings, took the time that would have been required to meet objective 7. In addition, work with Pb was unsuccessful due to experimental complications and work on Cd is still in progress. On the other hand, the uptake and toxicity of the anion, selenate was characterized with respect to electrostatic effects and the influences of metal cations. In addition, the project included more theoretical work, supported by experimentation, than was originally planned. This included transmembrane ion fluxes considered in terms of PM-surface electrical potentials and the influence of CWs upon ion concentrations at PM surfaces. A important feature of the biogeochemistry of trace elements in the rhizosphere is the interaction between plant-root surfaces and the ions present in the soil solution. The ions, especially the cations, of the soil solution may be accumulated in the aqueous phases of cell surfaces external to the PMs, sometimes referred to as the "water free space" and the "Donnan free space". In addition, ions may bind to the CW components or to the PM surface with variable binding strength. Accumulation at the cell surface often leads to accumulation in other plant parts with implications for the safety and quality of foods. A G-C-S model for PMs and a Donnan-plus-binding model for CWs were used successfully to compute electrical potentials, ion binding, and ion concentration at root-cell surfaces. With these electrical potentials, corresponding values for ion activities may be computed that are at least proportional to actual values also. The computed cell-surface ion activities predict and explain ion uptake, intoxication, and amelioration of intoxication much more accurately than ion activities in the bulk-phase rooting medium.

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Tidd, Alexander N., Richard A. Ayers, Grant P. Course et Guy R. Pasco. Scottish Inshore Fisheries Integrated Data System (SIFIDS) : work package 6 final report development of a pilot relational data resource for the collation and interpretation of inshore fisheries data. Sous la direction de Mark James et Hannah Ladd-Jones. Marine Alliance for Science and Technology for Scotland (MASTS), 2019. http://dx.doi.org/10.15664/10023.23452.

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[Extract from Executive Summary] The competition for space from competing sectors in the coastal waters of Scotland has never been greater and thus there is a growing a need for interactive seascape planning tools that encompass all marine activities. Similarly, the need to gather data to inform decision makers, especially in the fishing industry, has become essential to provide advice on the economic impact on fishing fleets both in terms of alternative conservation measures (e.g. effort limitations, temporal and spatial closures) as well as the overlap with other activities, thereby allowing stakeholders to derive a preferred option. The SIFIDS project was conceived to allow the different relevant data sources to be identified and to allow these data to be collated in one place, rather than as isolated data sets with multiple data owners. The online interactive tool developed as part of the project (Work Package 6) brought together relevant data sets and developed data storage facilities and a user interface to allow various types of user to view and interrogate the data. Some of these data sets were obtained as static layers which could sit as background data e.g. substrate type, UK fishing limits; whilst other data came directly from electronic monitoring systems developed as part of the SIFIDS project. The main non-static data source was Work Package 2, which was collecting data from a sample of volunteer inshore fishing vessels (<12m). This included data on location; time; vessel speed; count, time and position of deployment of strings of creels (or as fleets and pots as they are also known respectively); and a count of how many creels were hauled on these strings. The interactive online tool allowed all the above data to be collated in a specially designed database and displayed in near real time on the web-based application.

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