A Multidimensional Methodology with Support for Spatio-Temporal Multigranularity in the Conceptual and Logical Phases

Author(s):  
Concepción M. Gascueña ◽  
Rafael Guadalupe

The Multidimensional Databases (MDB) are used in the Decision Support Systems (DSS) and in Geographic Information Systems (GIS); the latter locates spatial data on the Earth’s surface and studies its evolution through time. This work presents part of a methodology to design MDB, where it considers the Conceptual and Logical phases, and with related support for multiple spatio-temporal granularities. This will allow us to have multiple representations of the same spatial data, interacting with other, spatial and thematic data. In the Conceptual phase, the conceptual multidimensional model—FactEntity (FE)—is used. In the Logical phase, the rules of transformations are defined, from the FE model, to the Relational and Object Relational logical models, maintaining multidimensional semantics, and under the perspective of multiple spatial, temporal, and thematic granularities. The FE model shows constructors and hierarchical structures to deal with the multidimensional semantics on the one hand, carrying out a study on how to structure “a fact and its associated dimensions.” Thus making up the Basic factEnty, and in addition, showing rules to generate all the possible Virtual factEntities. On the other hand, with the spatial semantics, highlighting the Semantic and Geometric spatial granularities.

2021 ◽  
Vol 24 (1) ◽  
pp. 37-46
Author(s):  
João Carlos Coimbra ◽  
Tiago Menezes Freire

A robust biostratigraphic zonation based on microfossils supports the stratigraphic framework and correlation of the interior basins of the Lower Cretaceous of NE Brazil. This zonation has also allowed correlations with coeval sections in the Brazilian marginal basins and in the Gabon and Congo basins (central-west Africa). These records, consisting mainly of non-marine sediments, were a great challenge with regard to the correlation with the International Chronostratigraphic Chart. Therefore, local stages were used, the most recent being the Alagoas local Brazilian Stage, with which the Post-rift Sequence I of the Araripe Basin is related. Regarding lithostratigraphy, this sequence includes the Rio da Batateira (Barbalha for some authors) and Santana formations, the last one with the famous Crato, Ipubi, and Romualdo members, from the base to the top. Although currently there is a consensus on the age of the Alagoas local Brazilian Stage in the Araripe Basin, recently a new age for at least part of the Post-rift Sequence I was proposed. This new proposal, based on isotopic analysis of Re-Os, arose as a panacea to correlate the Rio da Batateira Formation and the Crato and Ipubi members with the international stages. Surprisingly, their authors, although on the one hand, they seem to underestimate biostratigraphic results, on the other they seek to support their proposal from microfossils studied by previous authors, but they do so in an inappropriate way, leading readers to misinterpret their results. Therefore, this paper presents a critical review on the age of the Alagoas local Brazilian Stage in the Araripe Basin and nearby basins, refuting a Barremian age for part of the Post-rift Sequence I. Keywords: Alagoas local Brazilian Stage, biostratigraphy, ostracods, palynomorphs, radiometric ages.


2019 ◽  
Vol 3 (1) ◽  
pp. 243-256
Author(s):  
Peter M. Robinson

AbstractWe discuss developments and future prospects for statistical modeling and inference for spatial data that have long memory. While a number of contributons have been made, the literature is relatively small and scattered, compared to the literatures on long memory time series on the one hand, and spatial data with short memory on the other. Thus, over several topics, our discussions frequently begin by surveying relevant work in these areas that might be extended in a long memory spatial setting.


2014 ◽  
Vol 16 (1) ◽  
pp. 264-286 ◽  
Author(s):  
Dirk Hartmann ◽  
Peter Hasel

AbstractFloor field methods are one of the most popular medium-scale navigation concepts in microscopic pedestrian simulators. Recently introduced dynamic floor field methods have significantly increased the realism of such simulations, i.e. agreement of spatio-temporal patterns of pedestrian densities in simulations with real world observations. These methods update floor fields continuously taking other pedestrians into account. This implies that computational times are mainly determined by the calculation of floor fields. In this work, we propose a new computational approach for the construction of dynamic floor fields. The approach is based on the one hand on adaptive grid concepts and on the other hand on a directed calculation of floor fields, i.e. the calculation is restricted to the domain of interest. Combining both techniques the computational complexity can be reduced by a factor of 10 as demonstrated by several realistic scenarios. Thus on-line simulations, a requirement of many applications, are possible for moderate realistic scenarios.


2014 ◽  
Vol 4 (1) ◽  
pp. 38-64
Author(s):  
Nikos Pelekis ◽  
Elias Frentzos ◽  
Nikos Giatrakos ◽  
Yannis Theodoridis

Composition of space and mobility in a unified data framework results into Moving Object Databases (MOD). MOD management systems support storage and query processing of non-static spatial objects and provide essential operations for higher level analysis of movement data. The goal of this paper is to present Hermes MOD engine that supports the aforementioned functionality through appropriate data types and methods in Object-Relational DBMS (ORDBMS) environments. In particular, Hermes exploits on the extensibility interface of ORDBMS that already have extensions for static spatial data types and methods that follow the Open Geospatial Consortium (OGC) standard, and extends the ORDBMS by supporting time-varying geometries that change their position and/or extent in space and time dimensions, either discretely or continuously. It further extends the data definition and manipulation language of the ORDBMS with spatio-temporal semantics and functionality.


2021 ◽  
Vol 91 (3) ◽  
pp. 75-94
Author(s):  
Andrzej Napiórkowski

What is the Ascension? Is it merely a narrative of a post-paschal community? In what spatio-temporal reality has it been fulfilled? How should we understand its placement in time: forty days after the Resurrection, and ten days prior to the Descent of the Holy Spirit? The Ascension should be analyzed integrally in connection with the mystery of death and the Resurrection. This paper presents an attempt at deepening New-Testament ecclesiogenesis while also moving away from the narrowed understanding that the Church emerged solely as a result of the words, deeds and person of Jesus Christ. On the one hand, it is a reference to the five stages of the Church's emergence as an event of the entire Holy Trinity in the still-unfinished history of salvation. On the other: it is a presentation of the typically ignored of the Ascension, which is usually reduced to the event of the Resurrection of the glorious Lord. Analysis of the Ascension – performed in the light of ecclesiogenesis – leads to uncovering the pneumatological and eschatological components, which are most interesting in reference to the multi-dimensional establishment of the Church and its mission.


Revista Labor ◽  
2018 ◽  
Vol 2 (18) ◽  
pp. 236
Author(s):  
Juliana de Almeida Pereira e Santos

Este artigo, excerto de um estudo maior de dissertação de Mestrado, propõe um paralelo entre os fundamentos epistemológicos e filosóficos que originam e sustentam a concepção de currículo integrado, como teoria pedagógica de base marxista, de um lado, e, de outro, os parâmetros organizacionais e pedagógicos que emergem da experiência de um curso Técnico em Enfermagem analisado, buscando apontamentos no que concerne a rupturas e a continuidades concernentes à educação omnilateral. Utilizou-se, para tanto, pesquisa de natureza básica, do tipo exploratória, com abordagem hipotético-dedutiva e enfoque qualitativo. No que tange ao procedimento, estudo de caso, a partir da técnica de história oral, na modalidade temática. As conclusões apontam que o caso analisado, embora não tenha atingido plenamente o desafio de educação integradora, dadas as disputas e os arranjos organizacionais em contrário, por apresentar ações e intenções integradoras, ainda que embrionárias e inconclusas, constituiu-se como proposta inabitual, em seu contexto espaçotemporal, o que evidencia seu mérito e relevância.AbstractThis article, an excerpt from a larger dissertation study, proposes a parallel between the epistemological and philosophical foundations that originate and sustain the conception of integrated curriculum, as pedagogical theory of Marxist base, on the one hand, and, on the other hand, the organizational and pedagogical parameters that emerge from the experience of a Technical Course in Nursing analyzed, looking for notes on the ruptures and continuities concerning omnilateral education. For this purpose, research of a basic nature, of the exploratory type, with hypothetical-deductive approach and qualitative approach was used. Regarding the procedure, a case study, based on the oral history technique, in the thematic modality. The conclusions pointed out that the case analyzed, although it did not fully reach the challenge of integrative education, given the disputes and the organizational arrangements to the contrary, for presenting actions and intentions integrating, although embryonic and inconclusive, was an unusual proposal, in its spatio-temporal context, which shows its merit and relevance.


2020 ◽  
Vol 23 (4) ◽  
pp. 8-15
Author(s):  
Nataliya V. Volodina ◽  
◽  
Nikolai A. Degtyarev ◽  

The story «Diary of a seminarian», by I. S. Nikitin, as the name implies, is written in the form of a diary: Nikitin imitates the real diary of a young seminarian. The article makes an assumption about the interaction of two discourses, artistic and documentary, in the text of the story. This interaction manifests itself in relation to the spatio-temporal organization of the world of the work. The narrator's time is subordinated to the documentary discourse, which basically does not coincide with the physical time, but is built in accordance with the psychological characteristics of the main character, the author of the diary. On the other hand, the completeness of the temporary whole of the story, the distribution of time in accordance with the aesthetic tasks solved in the work, signals the influence of artistic discourse. The deployment of an event series is also subordinated to the task of interaction between two types of chronotope. On the one hand, the «mosaic» of this series, the set of events included in the text as if not mandatory, create the illusion of authenticity of what is happening; on the other, all these various inclusions are somehow artistically justified and perform certain aesthetic functions. The unfolding of events «here and now», the abundance of dialogues, direct speech of the characters are characteristic features of the artistic chronotope of Nikitin's story. The optics of perception and the language of describing space in the story are constructed in accordance with the value system of the narrator, manifesting itself in the documentary style of the narrative. On the other hand, the detailed description of the spaces familiar to the narrator serves an artistic function: it creates an image of the Seminary. As a result of the analysis, the author comes to the conclusion that the features of the documentary diary chronotope are associated with the image of the narrator, and the artistic diary chronotope – with the image of the author.


Author(s):  
S. Schade

Most data sets and streams have a geospatial component. Some people even claim that about 80% of all data is related to location. In the era of Big Data this number might even be underestimated, as data sets interrelate and initially non-spatial data becomes indirectly geo-referenced. The optimal treatment of Big Data thus requires advanced methods and technologies for handling the geospatial aspects in data storage, processing, pattern recognition, prediction, visualisation and exploration. On the one hand, our work exploits earth and environmental sciences for existing interoperability standards, and the foundational data structures, algorithms and software that are required to meet these geospatial information handling tasks. On the other hand, we are concerned with the arising needs to combine human analysis capacities (intelligence augmentation) with machine power (artificial intelligence). This paper provides an overview of the emerging landscape and outlines our (Digital Earth) vision for addressing the upcoming issues. We particularly request the projection and re-use of the existing environmental, earth observation and remote sensing expertise in other sectors, i.e. to break the barriers of all of these silos by investigating integrated applications.


2019 ◽  
Vol 2 (1) ◽  
pp. 50
Author(s):  
Valentini Grigoriadou

Blockchain is a revolutionary technology which is expected to cut off proxies, reduce cost and increase speed and range. It offers transparency, safety and traceability and considerable high levels of trust. In contrast with traditional hierarchical structures and central data-bases where trust lies within institutions, blockchain’s trust is technology. It could possibly constitute the core of a new type of internet. The fact that it is developing rapidly in various fields simultaneously, will inevitably change the way of communication in the future. Although, since its onset, it was mainly used for financial exchange; it becomes evident that it is applicable in every form of exchange. Thus the new digital trust through encryption could have a determining role in redeveloping higher education. In such a context, students, instructors and teachers are in direct relationship with one another; as a result new forms of interaction are generated. The main objective is to examine on the one hand blockchain’s application in the educational sector, focusing on its potential to change educational mechanisms for the better and on the other hand its reception and the influence this technology could have on the socio-psychological reality of the involved subjects. Its application on the field of education will undoubtedly be beneficial but it is an imperative that we inspect any potential dangers as well. Since people have the need of an institution that they can trust, the creation of a world of decentralised trust is a challenge.


2018 ◽  
Vol 41 (1) ◽  
pp. 153-170
Author(s):  
Syamsul Anwar

This article deals with an uṣūlī concept known among the Hanafi legal theoretician under the name of dalālāt al-khāf (the denotation of an obscure text) and its relation to the mechanism of ijtihād with special reference to the case of euthanasia. The author examines the meaning of the obscure text (al-khāfiy) and discusses the mechanism followed by the uṣūlī in clarifying the ambiguity in it, taking euthanasia as an example. From this, the author concludes that the process of legal reasoning in founding out a legal rule for a case involves three poles which have dialectical relations to one another: the text, the reality, and the objective of law. The text with its symbolic characteristic and its relying upon generalization and abstraction in expressing an object enables the mujtahid to add a new meaning to it and this meaning is produced through an adequate understanding of the case and the spatio-temporal space in which it happens in the one hand and through considering the objective of law as meaning space on the other hand. The reality of the case shades  light in our understanding of the text, while the text in the same time gives us a clear orientation in coping with the reality.


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