scholarly journals RHEA v1.0: Enabling fully coupled simulations with hydro-geomechanical heterogeneity

2021 ◽  
Author(s):  
José M. Bastías Espejo ◽  
Andy Wilkins ◽  
Gabriel Rau ◽  
Philipp Blum
Keyword(s):  
Open Source ◽  
Spatial Scales ◽  
Heterogeneous Systems ◽  
Two Dimensions ◽  
Rock Fracturing ◽  
Geomechanical Properties ◽  
Tightly Coupled ◽  
Fully Coupled ◽  
Complex Geology ◽  
Different Levels

Abstract. Realistic modelling of tightly coupled hydro-geomechanical processes is relevant for the assessment of many hydrological and geotechnical applications. Such processes occur in geologic formations and are influenced by natural heterogeneity. Current numerical libraries offer capabilities and physics couplings that have proven to be valuable in many geotechnical fields like gas storage, rock fracturing and Earth resources extraction. However, implementation and verification of full heterogeneity of subsurface properties using high resolution field data in coupled simulations has not been done before. We develop, verify and document RHEA (Real HEterogeneity App), an open-source, fully coupled, finite-element application capable of including element-resolution hydro-geomechanical properties in coupled simulations. We propose a simple, yet powerful workflow to allow the incorporation of fully distributed hydro-geomechanical properties. We then verify the code with analytical solutions in one and two dimensions, and propose a benchmark semi-analytical problem to verify heterogeneous systems with sharp gradients. Finally, we demonstrate RHEA's capabilities with a comprehensive example including realistic properties. With this we demonstrate that RHEA is a verified open-source application able to include complex geology to perform scalable, fully coupled, hydro-geomechanical simulations. Our work is a valuable tool to assess challenging real world hydro-geomechanical systems that may include different levels of complexity like heterogeneous geology with several time and spatial scales and sharp gradients produced by contrasting subsurface properties.

RHEA: A verified simulator for hydro-geomechanical heterogeneity

2021 ◽  
Author(s):  
Jose Bastias ◽  
Gabriel Rau ◽  
Andy Wilkins ◽  
Philipp Blum
Keyword(s):  
Open Source ◽  
Spatial Scales ◽  
Heterogeneous Systems ◽  
Two Dimensions ◽  
Rock Fracturing ◽  
Geomechanical Properties ◽  
Tightly Coupled ◽  
Geological Formations ◽  
Fully Coupled ◽  
Complex Geology

<p>Realistic modelling of tightly coupled hydro-geomechanical processes is relevant for the assessment of many hydrological and geotechnical applications. Such processes occur in geological formations and are influenced by natural heterogeneities. Current numerical libraries offer capabilities and physics coupling, that have proven to be valuable in simulating various applications in geotechnical fields such as underground gas storage, rock fracturing, land subsidence and Earth resources extraction. However, implementation and verification of full heterogeneity of subsurface properties using high resolution field data in coupled simulations has not been done yet. Hence, we develop, verify and document RHEA (Real HEterogeneity App), an open-source fully coupled finite element application capable of including node-resolution hydro-geomechanical properties in coupled simulations. We propose a simple, yet powerful workflow to allow the integration of fully distributed hydro-geomechanical properties. We then verify the code with analytical solutions in one and two dimensions and propose a benchmark semi-analytical problem to verify heterogeneous systems with sharp gradients. Finally, we exemplify RHEA's capabilities with a comprehensive example integrating realistic properties. With this we demonstrate that RHEA is a verified open-source application able to integrate complex geology to perform scalable fully coupled hydro-geomechanical simulations. Our work is a valuable tool to assess real world hydro-geomechanical challenging systems that may include different levels of complexity like heterogeneous geology with several time and spatial scales and sharp gradients produced by contrasting subsurface properties.</p>

scholarly journals RHEA v1.0: Enabling fully coupled simulations with hydro-geomechanical heterogeneity

2021 ◽  
Vol 14 (10) ◽  
pp. 6257-6272
Author(s):  
José M. Bastías Espejo​​​​​​​ ◽  
Andy Wilkins ◽  
Gabriel C. Rau ◽  
Philipp Blum
Keyword(s):  
Open Source ◽  
Heterogeneous Systems ◽  
Two Dimensions ◽  
Distributed Data ◽  
Rock Fracturing ◽  
Geomechanical Properties ◽  
Spatially Distributed ◽  
Tightly Coupled ◽  
Fully Coupled ◽  
Current Modelling

Abstract. Realistic modelling of tightly coupled hydro-geomechanical processes is relevant for the assessment of many hydrological and geotechnical applications. Such processes occur in geologic formations and are influenced by natural heterogeneity. Current numerical libraries offer capabilities and physics couplings that have proven to be valuable in many geotechnical fields like gas storage, rock fracturing and Earth resources extraction. However, implementation and verification of the full heterogeneity of subsurface properties using high-resolution field data in coupled simulations has not been done before. We develop, verify and document RHEA (Real HEterogeneity App), an open-source, fully coupled, finite-element application capable of including element-resolution hydro-geomechanical properties in coupled simulations. To extend current modelling capabilities of the Multiphysics Object-Oriented Simulation Environment (MOOSE), we added new code that handles spatially distributed data of all hydro-geomechanical properties. We further propose a simple yet powerful workflow to facilitate the incorporation of such data to MOOSE. We then verify RHEA with analytical solutions in one and two dimensions and propose a benchmark semi-analytical problem to verify heterogeneous systems with sharp gradients. Finally, we demonstrate RHEA's capabilities with a comprehensive example including realistic properties. With this we demonstrate that RHEA is a verified open-source application able to include complex geology to perform scalable, fully coupled, hydro-geomechanical simulations. Our work is a valuable tool to assess challenging real-world hydro-geomechanical systems that may include different levels of complexity like heterogeneous geology and sharp gradients produced by contrasting subsurface properties.

scholarly journals The Potential Of Simulating Energy Systems: The Multi Energy Systems Simulator Model

2021 ◽  
Author(s):  
Luigi Bottecchia ◽  
Pietro Lubello ◽  
Pietro Zambelli ◽  
Carlo Carcasci ◽  
Lukas Kranzl
Keyword(s):  
Open Source ◽  
Spatial Scales ◽  
Optimal Solution ◽  
Energy Systems ◽  
Energy Transition ◽  
Simulation Models ◽  
Energy System ◽  
System Modelling ◽  
Energy System Model ◽  
Urban Level

Energy system modelling is an essential practice to assist a set of heterogeneous stakeholders in the process of defining an effective and efficient energy transition. From the analysis of a set of open source energy system models, it has emerged that most models employ an approach directed at finding the optimal solution for a given set of constraints. On the contrary, a simulation model is a representation of a system that is used to reproduce and understand its behaviour under given conditions, without seeking an optimal solution. Given the lack of simulation models that are also fully open source, in this paper a new open source energy system model is presented. The developed tool, called Multi Energy Systems Simulator (MESS), is a modular, multi-node model that allows to investigate non optimal solutions by simulating the energy system. The model has been built having in mind urban level analyses. However, each node can represent larger regions allowing wider spatial scales to be be represented as well. MESS is capable of performing analysis on systems composed by multiple energy carriers (e.g. electricity, heat, fuels). In this work, the tool’s features will be presented by a comparison between MESS itself and an optimization model, in order to analyze and highlight the differences between the two approaches, the potentialities of a simulation tool and possible areas for further development.

scholarly journals PPMaP: Reproducible and Extensible Open-Source Software for Plant Phenological Phase Duration Prediction and Mapping

2020 ◽  
Author(s):  
Henri E. Z. Tonnang ◽  
Ritter A. Guimapi ◽  
Bruce Anani ◽  
Dan Makumbi ◽  
Bester Mudereri ◽  
...  
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Field Experiments ◽  
Spatial Scales ◽  
Crop Protection ◽  
Region Of Interest ◽  
Plant Phenology ◽  
Phase Duration ◽  
Ecological Zones ◽  
Landscape Level

Understanding the detailed timing of crop phenology and their variability enhances grain yield and quality by providing precise scheduling of irrigation, fertilization, and crop protection mechanisms. Advances in information and communication technology (ICT) provide a unique opportunity to develop agriculture-related tools that enhance wall-to-wall upscaling of data outputs from point-location data to wide-area spatial scales. Because of the heterogeneity of the worldwide agro-ecological zones where crops are cultivated, it is unproductive to perform plant phenology research without providing means to upscale results to landscape-level while safeguarding field-scale relevance. This paper presents an advanced, reproducible, and open-source software for plant phenology prediction and mapping (PPMaP) that inputs data obtained from multi-location field experiments to derive models for any crop variety. This information can then be applied consecutively at a localized grid within a spatial framework to produce plant phenology predictions at the landscape level. This software supports the development of process-oriented and temperature-driven plant phenology models by intuitively and interactively leading the user through a step-by-step progression to the production of spatial maps for any region of interest. Maize (Zea mays L.) was used to demonstrate the robustness, versatility, and high computing efficiency of the resulting modeling outputs of the PPMaP. The framework is implemented in R, providing a flexible and easy‐to‐use GUI interface. Since this allows appropriate scaling to the larger spatial domain, the software can effectively be used to determine the spatially explicit length of growing period (LGP) of any variety.

scholarly journals A GIS-Based Cultural Heritage Study Framework on Continuous Scales: A Case Study on 19th Century Military Industrial Heritage

2015 ◽  
Vol XL-5/W7 ◽  
pp. 215-222 ◽  
Author(s):  
J. He ◽  
J. Liu ◽  
S. Xu ◽  
C. Wu ◽  
J. Zhang
Keyword(s):  
Systematic Approach ◽  
Spatial Scales ◽  
Heritage Conservation ◽  
Archaeological Sites ◽  
Historical Buildings ◽  
Gis Technology ◽  
Industrial Heritage ◽  
Natural Settings ◽  
Different Levels

This paper presents a framework of introducing GIS technology to record and analyse cultural heritages in continuous spatial scales. The research team is developing a systematic approach to support heritage conservation research and practice on historical buildings, courtyards, historical towns, and archaeological sites ad landscapes. These studies are conducted not only from the property or site scales, but also investigated from their contexts in setting as well as regional scales. From these continues scales, authenticity and integrity of a heritage can be interpreted from a broader spatial and temporal context, in which GIS would contribute through database, spatial analysis, and visualization. The case study is the construction of a information indexing framework of Dagu Dock industrial heritage to integrate physical buildings, courtyards, natural settings as well as their intangible characteristics which are affiliated to the physical heritage properties and presented through historical, social and culture semantics. The paper illustrates methodology and content of recording physical and social/cultural semantics of culture heritages on different scales as well as connection between different levels of database.

Creating Open-Source Interactive Articles for the Wider Publics

2015 ◽  
pp. 407-429
Author(s):  
Shalin Hai-Jew
Keyword(s):  
Open Access ◽  
Open Source ◽  
Value Added ◽  
Data Sets ◽  
Authoring Tools ◽  
Levels Of Abstraction ◽  
Digital Photographs ◽  
Multiple Audiences ◽  
Electronic Games ◽  
Different Levels

A core form of the international sharing of research and analysis is done through articles, both those presented in live conferences and those published in any number of journals. Interactive articles integrate various elements to the basic text: hyperlinks; immersive simulations; electronic games; data sets; knowledge collections; digital photographs; multimedia; integrated wikis and blogs; and other aspects. These value-added pieces that build exploration, experience, and interactivity, are enabled by current authoring tools and Web servers and open-source contents. Enriched articles often encourage return engagements, and their open-source publishing often leads to greater levels of citations and readership. These enable the design of a work for multiple audiences, with opt-in sections for different levels of readers, for example. Interaction enables opportunities for more reflection, recursiveness, and understanding a topic from multiple angles and different levels of abstraction. Interactive articles tend to appear in open-source (or at least open-access) publications online, which enables access by wider reading publics and machine-searchability and often wider citations.

Shaping the Future of Telecollaboration

2019 ◽  
pp. 151-172 ◽  
Author(s):  
Alberto Andujar
Keyword(s):  
Online Learning ◽  
Open Source ◽  
Learning Environments ◽  
Learning Process ◽  
Technological Development ◽  
Present Situation ◽  
Cultural Knowledge ◽  
Higher Institutions ◽  
Different Levels ◽  
The Web

This chapter analyzes the present situation of telecollaboration processes in synchronous online learning environments. The Web RTC protocol is presented as a new tool for online videoconferencing and telecollaboration that may potentially change the already in use applications for such purposes. In this vein, its characteristics such as P2P connectivity, open source protocol, no plugins installation, scalability, and accessibility guarantee that this technological development will help enhance the learning process at different levels. Higher institutions and practitioners will particularly benefit from the use of this technology as its use will increase cross-cultural knowledge as well as expand students' opportunities for out-of-class tuition.

Food Safety From Consumer Perspective

2018 ◽  
pp. 316-336
Author(s):  
Ivana Domazet ◽  
Nenad Djokić
Keyword(s):  
Food Safety ◽  
Literature Review ◽  
Consumer Research ◽  
Two Dimensions ◽  
Consumer Perception ◽  
Consumer Confidence ◽  
Consumer Perspective ◽  
Different Levels

Consumer perception is one of the aspects from which food safety can be considered. This view of food safety, named in the literature as subjective safety, does not necessarily correspond to objective food safety and is also considered as not being easily influenced by education of consumers. Having that in mind, the first goal of this chapter is to examine different approaches to food safety and the results of previous research dealing with consumer perspective of food safety. Besides giving broad literature review of the topic, the goal of this chapter is to implement Consumer confidence in food safety scale in Serbian consumer research. The validity, reliability, and one-dimensionality of this scale, which consists of optimism and pessimism (two dimensions of confidence), are tested and determinants of different rating on it are examined. The research from 2016 includes 300 participants in the main survey. Finally, starting from profiling consumers with different levels of general confidence in food safety, managerial recommendations are provided.

Lessons Learned from ISIS Recruitment in Turkey: A Paradigm Shift in Counterterrorism Is Needed

2021 ◽  
Author(s):  
Suleyman Ozeren ◽  
Suat Cubukcu ◽  
Mehmet F. Bastug
Keyword(s):  
Human Resources ◽  
Open Source ◽  
Paradigm Shift ◽  
Lessons Learned ◽  
Islamic State ◽  
Face To Face ◽  
Rehabilitation Programs ◽  
Transit Country ◽  
Different Levels

The Islamic State of Iraq and Syria (ISIS) has been unprecedentedly effective in recruiting foreign terrorist fighters (FTFs). While Turkey has been a transit country and a major hub for ISIS’s logistical and human resources, it also has become a prolific hotbed for its recruitment. Based on face-to-face interviews and open-source reports, this paper provides an in-depth assessment of ISIS’s recruitment structure and the challenges that Turkey faces in relation to ISIS’s activities and FTFs. We conclude with a set of recommendations and a roadmap for pursuing effective and sustainable policies against ISIS. Overall, Turkey should adopt a paradigm shift on counterterrorism, transform the security and intelligence apparatus, and develop rehabilitation programs that consider the specificity of individuals’ radicalization at different levels.

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