Geo-feature modeling uncertainties in discrete global grids: a case study of downtown Calgary, Canada

GEOMATICA ◽  
2020 ◽  
pp. 1-21
Author(s):  
Mingke Li ◽  
Emmanuel Stefanakis
Keyword(s):  
Urban Environments ◽  
Feature Modeling ◽  
Research Directions ◽  
Grid Systems ◽  
Topological Relationships ◽  
Modeling Uncertainties ◽  
Multiple Resolutions ◽  
Grid Orientation ◽  
Open Geospatial Consortium

The Open Geospatial Consortium has officially adopted discrete global grid systems (DGGS) as a new option for Earth reference standards. Many state-of-the-art DGGS implementations have been developed, revealing the potential for DGGS applications. Before the wide application of DGGS in solving real-world problems, however, the potential uncertainties of modeling on DGGS should be investigated and documented. This study focused on the uncertainties of geo-feature modeling on DGGS, quantitatively measured the point position displacement and line and polygon features’ geometry distortion, and evaluated the validity of topological relationships. Specifically, traffic cameras (points), main streets (lines), and land-cover classes (polygons) of downtown Calgary (AB, Canada) were modeled in various DGGS configurations at multiple resolutions. Results showed that the point displacement and polygon distortion generally reduced when being modeled at a higher resolution. The tessellations with the monotonical convergence characteristic are recommended if cell indices are expected to represent levels of model precision. Line features’ fidelity was affected by grid tessellations, resolution levels, grid orientation relative to the Earth, and the rotated line directions. The degree of the line distortion was not straightforward to forecast. Maintaining the topological validity between spatial objects with various granularities was challenging and needed further algorithm development for DGGS implementations. The study outcomes can serve as useful guidelines in the selection among grid types, refinement ratios, and resolution levels when applying DGGS implementations to urban environments. This paper also pinpoints several research directions that can benefit the quantization and analysis of vector features on DGGS.

scholarly journals A Capabilities-Led Approach to Assessing Technological Solutions for a Rural Community

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1398
Author(s):  
Xinfang Wang ◽  
Rosie Day ◽  
Dan Murrant ◽  
Antonio Diego Marín ◽  
David Castrejón Botello ◽  
...  
Keyword(s):  
Rural Community ◽  
Rural Areas ◽  
Assessment Method ◽  
Unintended Consequences ◽  
Energy Services ◽  
Grid Systems ◽  
Technological Interventions ◽  
Solution Design ◽  
Improve Access

To improve access to affordable, reliable and sustainable energy in rural areas of the global south, off-grid systems using renewable generation and energy storage are often proposed. However, solution design is often technology-driven, with insufficient consideration of social and cultural contexts. This leads to a risk of unintended consequences and inappropriate systems that do not meet local needs. To address this problem, this paper describes the application of a capabilities-led approach to understanding a community’s multi-dimensional energy poverty and assessing their needs as they see them, in order to better design suitable technological interventions. Data were collected in Tlamacazapa, Mexico, through site visits and focus groups with men and women. These revealed the ways in which constrained energy services undermined essential capabilities, including relating to health, safety, relationships and earning a living, and highlighted the specific ways in which improved energy services, such as lighting, cooking and mechanical power could improve capabilities in the specific context of Tlamacazapa. Based on these findings, we propose some potential technological interventions to address these needs. The case study offers an illustration of an assessment method that could be deployed in a variety of contexts to inform the design of appropriate technological interventions.

scholarly journals Animal, Body, Data: Starling Murmurations and the Dynamic of Becoming In-formation

2021 ◽  
pp. 1357034X2199284
Author(s):  
Mickey Vallee
Keyword(s):  
Data Modelling ◽  
Animal Body ◽  
Topological Relationships ◽  
Animal Populations ◽  
Animal Data ◽  
Natural Scientists ◽  
The Relationship ◽  
Affective Relations

The aim of this article is to demonstrate that data modelling is becoming a crucial, if not dominant, vector for our understanding of animal populations and is consequential for how we study the affective relations between individual bodies and the communities to which they belong. It takes up the relationship between animal, body and data, following the datafication of starling murmurations, to explore the topological relationships between nature, culture and science. The case study thus embodies a data journey, invoking the tactics claimed by social or natural scientists, who generated recent discoveries in starling murmurations, including their topological expansions and contractions. The article concludes with thoughts and suggestions for further research on animal/data entanglement, and threads the concept of databodiment throughout, as a necessary dynamic for the formation and maintenance of communities.

A novel expert opinion-based approach to compute estimations of flood damage to property in dense urban environments. Barcelona case study

2021 ◽  
Vol 598 ◽  
pp. 126244
Author(s):  
Eduardo Martínez-Gomariz ◽  
Edwar Forero-Ortiz ◽  
Beniamino Russo ◽  
Luca Locatelli ◽  
Maria Guerrero-Hidalga ◽  
...  
Keyword(s):  
Expert Opinion ◽  
Flood Damage ◽  
Urban Environments

scholarly journals Applying the PECSL: using case studies to demonstrate the Pedagogy of Experience Complexity for Smart Learning

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Pen Lister
Keyword(s):  
Real World ◽  
Mobile Apps ◽  
Urban Environments ◽  
Learning Activities ◽  
Learning Activity ◽  
Opportunities To Learn ◽  
Practical Application ◽  
Design And Development ◽  
Smart Learning

AbstractThis paper discusses the uses and applications of the Pedagogy of Experience Complexity for Smart Learning (PECSL), a four-tier model of considerations for the design and development of smart learning activities. Using existing mobile apps and relevant activities as illustrative examples, the PECSL is applied to indicate concepts and mechanisms by which useful pedagogical considerations can work alongside user-centred design principles for the design and development of smart learning in urban hyper-localities. Practical application of the model is discussed using real world examples of activities as a basis to demonstrate the potential for manifold opportunities to learn, and plan for experience complexity in a smart learning activity. Case study approaches reflect on aspects of the PECSL in how it might be a useful and pragmatic guide to some of the issues faced when designing digital citizen learning activities in complex urban environments.

scholarly journals Leveraging Machine-Learning for D2D Communications in 5G/Beyond 5G Networks

Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 169
Author(s):  
Sherief Hashima ◽  
Basem M. ElHalawany ◽  
Kohei Hatano ◽  
Kaishun Wu ◽  
Ehab Mahmoud Mohamed
Keyword(s):  
Machine Learning ◽  
Network Architecture ◽  
D2d Communication ◽  
Neighbor Discovery ◽  
Research Directions ◽  
Fifth Generation ◽  
Research Activities ◽  
Comprehensive Survey ◽  
Network Overhead

Device-to-device (D2D) communication is a promising paradigm for the fifth generation (5G) and beyond 5G (B5G) networks. Although D2D communication provides several benefits, including limited interference, energy efficiency, reduced delay, and network overhead, it faces a lot of technical challenges such as network architecture, and neighbor discovery, etc. The complexity of configuring D2D links and managing their interference, especially when using millimeter-wave (mmWave), inspire researchers to leverage different machine-learning (ML) techniques to address these problems towards boosting the performance of D2D networks. In this paper, a comprehensive survey about recent research activities on D2D networks will be explored with putting more emphasis on utilizing mmWave and ML methods. After exploring existing D2D research directions accompanied with their existing conventional solutions, we will show how different ML techniques can be applied to enhance the D2D networks performance over using conventional ways. Then, still open research directions in ML applications on D2D networks will be investigated including their essential needs. A case study of applying multi-armed bandit (MAB) as an efficient online ML tool to enhance the performance of neighbor discovery and selection (NDS) in mmWave D2D networks will be presented. This case study will put emphasis on the high potency of using ML solutions over using the conventional non-ML based methods for highly improving the average throughput performance of mmWave NDS.

scholarly journals Perceived Culture of Networked Knowledge Hubs

2019 ◽  
Vol 1 (1) ◽  
pp. 2327-2336
Author(s):  
Pauliina Mattila ◽  
Floris van der Marel ◽  
Maria Mikkonen
Keyword(s):  
Future Development ◽  
Single Case ◽  
Global Network ◽  
Educational Setting ◽  
Single Case Study ◽  
Research Directions ◽  
Construction Of Knowledge ◽  
The Creation ◽  
Practical Implications

AbstractWhile the construction of knowledge hubs has gained recent traction, little is known on how networked actors perceive their collective culture. Authors looked at the topic through a single case study, the Design Factory Global Network, a network of 24 autonomous yet connected hubs for passion-based co- creation in an educational setting. Data was collected via questionnaires, asking 1) to describe their Design Factory in three distinct, words, 2) explicate these with exemplary stories, and 3) express future development wishes. 98 stories and future wishes were shared by representatives from 15 Design Factories. Excerpts reflecting cultural levels (attitudes, norms, manifestations) were identified and made sense of by looking at which level of stakeholder relationship (internal, host, network, wider environment) they targeted. 78 attitudes, 114 norms and 95 manifestations were mentioned, mostly targeting the internal community and the host levels. Authors draw some practical implications for each of the identified level or relationship, contributing to the knowledge of the creation and development of such innovation hubs. In addition, further research directions are proposed.

A case study of noise pollution levels during the restrictions period due to COVID-19.

2021 ◽  
Vol 263 (6) ◽  
pp. 206-214
Author(s):  
David Montes-González ◽  
Juan Miguel Barrigón-Morillas ◽  
Ana Cristina Bejarano-Quintas ◽  
Manuel Parejo-Pizarro ◽  
Guillermo Rey-Gozalo ◽  
...  
Keyword(s):  
Noise Pollution ◽  
Urban Environments ◽  
Control Measures ◽  
Acoustic Measurements ◽  
Pollution Levels ◽  
The World ◽  
The Impact ◽  
The City

The pandemic of coronavirus disease (COVID-19) led to the need for drastic control measures around the world to reduce the impact on the health of the population. The confinement of people in their homes resulted in a significant reduction in human activity at every level (economic, social, industrial, etc.), which was reflected in a decrease in environmental pollution levels. Studying the evolution of parameters, such as the level of environmental noise caused by vehicle traffic in urban environments, makes it possible to assess the impact of this type of measure. This paper presents a case study of the acoustic situation in Cáceres (Spain) during the restriction period by means of long-term acoustic measurements at various points of the city.

scholarly journals Aporte Teórico-Metodologico para o Estudo da Pluviosidade em Ambientes Urbanos Vulneráveis: Estudo de Caso do Clima Urbano de Duque de Caxias/RJ (Theoretical and Methodological Rain for the Study of Vulnerable in Urban Environments: a Case Study of ...)

2011 ◽  
Vol 4 (3) ◽  
pp. 476
Author(s):  
Antonio Carlos Da Silva Oscar Júnior ◽  
Ana Maria De Paiva Macedo Brandão
Keyword(s):  
Research Agenda ◽  
Rio De Janeiro ◽  
Urban Climate ◽  
Urban Environments ◽  
Modern World ◽  
Weather And Climate ◽  
New Space ◽  
New Research

Hodiernamente as ciências do tempo e do clima assumem protagonismo no meio cientifico devido às questões e polêmicas atuais acerca das mudanças climáticas. Tendo em vista esse novo espaço, esse trabalho tem como objetivo trazer uma contribuição teórico-metodologica para aqueles que desejam se debruçar sobre essas novas questões que afligem o mundo moderno. Para aprofundar as discussões deste artigo, abordaremos o caso de Duque de Caxias, localizado na Baixada Fluminense do Rio de Janeiro, usando a também como caso exemplo para explicar como as dinâmicas socioeconômicas, deixando suas marcas no território intensificam os riscos naturais e aprofundam as vulnerabilidades sociais. No aflorar dessa nova agenda de pesquisas é papel dos Geógrafos aprofundarem suas análises em prol de um ordenamento territorial, e gestão do espaço condizente com as novas necessidades da sociedade. Palavras-Chave: Clima Urbano, Mudanças Climáticas, Planejamento Urbano.  Theoretical and Methodological Rain for the Study of Vulnerable in Urban Environments: a Case Study of Urban Climate Duque de Caxias-RJ  ABSTRACT Today the sciences of weather and climate took center stage in the middle due to scientific issues and controversies about the current climate. In light of this new space, this work aims to bring a theoretical and methodological contributions for those Who wish to dwell on these new issues that plague the modern world. For further discussion of this article, we discuss the case of Duque de Caxias, located in the Baixada Fluminense in Rio de Janeiro, also using as a case example to explain how socio-economic dynamics, leaving it’s mark in the territory of natural hazards intensify and deepen the vulnerabilities social. Flourishin this new research agenda is the role of geographers deepen their analysis in favor of a use and land management consistent with the changing needs of society.  Keywords: Urban Climate, Climate Change, Runoff, Urban Management

scholarly journals Understanding Human Scale and the Importance of its Relationship with Enclosure

2021 ◽  
Author(s):  
◽  
Austin H. Mackesy-Buckley
Keyword(s):  
Urban Design ◽  
Middle Ages ◽  
Urban Environments ◽  
Design Practice ◽  
Human Scale ◽  
Design Case Study ◽  
Sphere Of Influence ◽  
Scale Design ◽  
The Relationship

<p>The main objective of the research is to better understand the concept of human scale and the role that it has to play in the design of our urban environments. The need for a clearer, less ambiguous understanding of human scale is identified as a result of its poor definition and numerous manifestations across a multitude of literature. Human scale is an important part of design that flourished particularly in the middle ages, but has largely been neglected in the industrial and technological ages. Its remergence comes with the return of consideration for the comfort of people. Yet we cannot successfully apply a concept we do not wholly understand. Human scale is therefore redefined as a collective concept that embodies the multitude of existing definitions and treats them as aspects of a larger theory. As a broader but more comprehensive definition it better facilitates the identification and exploration of relationships with what are currently treated as separate urban design objectives, such as enclosure, in an endeavour to better understand the influence of human scale. The design case study proposes a design that tests the relationship between enclosure and human scale. A large site is chosen to display how human scale operates at urban, as well as architectural and detailed levels. Through aspiring to achieve a thorough human scale design, without any exclusive emphasis on enclosure, the process and the outcome still reveal that the theoretical relationship identified in the research (that aspects of human scale foster the formation of enclosure) is unavoidable in design practice. Enclosure simply results as a consequence of thorough human scale design. The research suggests that many urban design objectives may fall under human scale's sphere of influence meaning it is not a singular concept, but an ethic of design that has many desireable consequences. While the idealistic nature of the design may be unrealistic to achieve at present, it highlights the incompatibilities with contemporary approaches and succeeds in generating discussion.</p>

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