scholarly journals Weighted Information Models for the Quantitative Prediction and Evaluation of the Geothermal Anomaly Area in the Plateau: A Case Study of the Sichuan–Tibet Railway

2021 ◽  
Vol 13 (9) ◽  
pp. 1606
Author(s):  
Wenbo Zhao ◽  
Qing Dong ◽  
Zhe Chen ◽  
Tao Feng ◽  
Dong Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Information Model ◽  
Quantitative Prediction ◽  
Impact Factors ◽  
Temperature Anomalies ◽  
Information Models ◽  
Entropy Information ◽  
Geological Formation ◽  
High Prediction ◽  
Map Data

The prediction of geothermal high-temperature anomalies along the plateau railway will be helpful in the construction of the project and its later management. Taking the Sichuan–Tibet railway as the study area and based on Landsat8 thermal infrared images, map data, and measured data regarding the cause and distribution of geothermal high-temperature anomalies, through correlation analysis, we selected six impact factors including the LST, combined entropy of geological formation, fault density, buffer distance to rivers, magnetic anomaly, and earthquake peak acceleration as the input maps of the model. The index-overlay information model, the weights of the entropy information model, and the weights of the evidence information model were established to quantitatively predict the geothermal anomaly in the study area, and the prediction maps were divided into four classes. The results show that the weights of the evidence information model achieved a high prediction accuracy; the success index and the ratio of the high anomaly area reached 0.0053% and 0.872, respectively, and the spatial distribution of the geothermal points is basically consistent with the prediction results. This research can act as a reference for the design and construction of the Sichuan–Tibet railway.

scholarly journals Development of an Information Model for the Personality’s Social Portrait Formation Using OSINT Technology

2021 ◽  
Vol 71 (1) ◽  
Author(s):  
Mykhailo Mozhaiev ◽  
Pavlo Buslov
Keyword(s):  
Decision Making ◽  
Social Environment ◽  
Semantic Network ◽  
Information Model ◽  
Decision Making Process ◽  
Source Information ◽  
Information Models ◽  
Behavioural Patterns ◽  
The Social ◽  
Group Members

The results of the development of an information model for the personality’s social portrait formation are presented. The modelling has been carried out using OSINT technology that is the technology of legal obtaining and using open source information. In the result of the analysis, it has been found out that the social portrait is a heterogeneous semantic network consisting of personalized data. It has been defined that people organize formal and official communities of various orientations and the number of such communities associated with a particular person is practically unlimited. When formalizing the decision-making process, the concept of a group social portrait (GSP) has been introduced, which takes into account the community’s social tendencies united by certain common properties, group members' interpersonal interactions and their behavioural patterns. The obtained information models of personal and group social portraits let to take into account all the main properties of the objects under study, their tonality and significance, as well as to conduct an analysis of the implicit dependencies determination. The next step is to move on to considering the diversity of the digital social environment elements.

Developing building information models (BIM) for building handover, operation and maintenance

2019 ◽  
Vol 17 (3) ◽  
pp. 301-316 ◽  
Author(s):  
Marjan Sadeghi ◽  
Jonathan Weston Elliott ◽  
Nick Porro ◽  
Kelly Strong
Keyword(s):  
Information Exchange ◽  
Model Development ◽  
Information Model ◽  
Content Type ◽  
Operation And Maintenance ◽  
Information Models ◽  
Building Information ◽  
Essential Input ◽  
Construction Operation

PurposeThis paper aims to represent the results of a case study to establish a building information model (BIM)-enabled workflow to capture and retrieve facility information to deliver integrated handover deliverables.Design/methodology/approachThe Building Handover Information Model (BHIM) framework proposed herein is contextualized given the Construction Operation Information Exchange (COBie) and the level of development schema. The process uses Autodesk Revit as the primary BIM-authoring tool and Dynamo as an add-in for extending Revit’s parametric functionality, BHIM validation, information retrieval and documentation in generating operation and maintenance (O&M) deliverables in the end-user requested format.FindingsGiven the criticality of semantics for model elements in the BHIM and for appropriate interoperability in BIM collaboration, each discipline should establish model development and exchange protocols that define the elements, geometrical and non-geometrical information requirements and acceptable software applications early in the design phase. In this case study, five information categories (location, specifications, warranty, maintenance instructions and Construction Specifications Institute MasterFormat division) were identified as critical for model elements in the BHIM for handover purposes.Originality/valueDesign- and construction-purposed BIM is a standard platform in collaborative architecture, engineering and construction practice, and the models are available for many recently constructed facilities. However, interoperability issues drastically restrict implementation of these models in building information handover and O&M. This study provides essential input regarding BIM exchange protocols and collaborative BIM libraries for handover purposes in collaborative BIM development.

Preliminary Results Related to the Design of Virtual Probes for Use in a Nano-Manipulation Test-Bed

2005 ◽  
Author(s):  
Anant Trivedi ◽  
J. Cecil
Keyword(s):  
Information Model ◽  
Enterprise Modeling ◽  
Nano Particles ◽  
Test Bed ◽  
Considerable Saving ◽  
Pull Out ◽  
Physical Experiments ◽  
Information Models ◽  
The Impact ◽  
Manipulation Process

This paper discusses the design of virtual probe tip models for use in a nano-manipulation research test-bed (NMRT). The proposed NMRT would help study the feasibility of a given manipulation technique in a virtual environment before physical experiments. For example, NMRT would be able to help users determine if a specific kind of probe tip can be used to pull out a nano-particle from a given substrate. A virtual probe tip model (for instance) would consider the given geometry and material of probe tip and simulate its behavior in a manipulation application in a physics based virtual reality environment. Such a virtual analysis and overall approach would result in considerable saving in time and financial resources with substantial application potential in medical and biotechnology fields where nanoparticle manipulation is useful. Expandability of the NMRT is made possible by designing an ‘information oriented’ or ‘information intensive’ model for a target set of nano-manipulation activities, which maps in detail various attributes related to a target nano-manipulation process [1]. In this approach, information models based on “engineering Enterprise Modeling Language” (eEML) are used. For example, consider an existing information model for interaction of a probe tip with a spherical particle; a user can use an existing information model, or modify it quickly to study the impact of two approaches (eg. manipulation strategy-A versus strategy-B, which may apply a different probe-tip for gripping). For a target nano-manipulation process (for example, the assembly of nano particles using an Atomic Force Microscope probe as a gripper), an information model can represent the core attributes influencing the target process; influencing criteria including constraints, information inputs, and physical inputs can be modeled explicitly and used to drive a target analysis or simulation activity.

scholarly journals Information modeling of processes of reflexive management of herd behavior at enterprises

2019 ◽  
Keyword(s):  
System Analysis ◽  
Information Model ◽  
Information Modeling ◽  
Practical Implementation ◽  
Herd Behavior ◽  
Conceptual Information ◽  
Scientific Methods ◽  
Modeling Methodology ◽  
Information Models ◽  
General Scientific

The relevance of the practical implementation of the concept of modeling processes of reflexive management of herd behavior at enterprises, which is reduced to the construction of a conceptual information model, is substantiated. The subject of this research is the toolkit of information modeling of the processes of reflexive management of herd behavior at enterprises. The goal of the article is information modeling of the processes of reflexive management of herd behavior at enterprises. Objective: the construction of an information model of the mechanisms of reflexive management of herd behavior in enterprises in the context of the interrelated functions performed by the system in question and the relationship between data, where, among others, information communications are reflected. General scientific methods are used: system analysis – to determine the features of the mechanism of reflexive management of herd behavior at enterprises, structural (functional) analysis – to identify the main functions of the modeling system of processes of reflexive management of herd behavior at enterprises, information modeling methodology SADT (IDEF0 notation) – to develop information models of a system for modeling the processes of reflexive management of herd behavior at enterprises. The results are obtained: an information IDEF0 model of a system for modeling the processes of reflexive management of herd behavior based on the SADT methodology is developed, which allows you to get a holistic picture of the corresponding processes at enterprises, the basic system concepts of which form the basis of the future information system. Conclusions: formalization, within the framework of the information model of the basic functions of the mechanism of modeling the processes of reflexive management of herd behavior at the enterprise, allows us to describe the basic information connections in a logical, convenient and consistent form, present implementation mechanisms, a set of mathematical models and approaches of the corresponding system.

scholarly journals Ab Initio Prediction of High-Temperature Magnetic Relaxation Rates in Single-Molecule Magnets

2021 ◽  
Author(s):  
Daniel Reta ◽  
Jon G. C. Kragskow ◽  
Nicholas Chilton
Keyword(s):  
High Temperature ◽  
Ab Initio ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Quantitative Prediction ◽  
Relaxation Dynamics ◽  
Efficient Design ◽  
Relaxation Rates ◽  
Design Strategies ◽  
Single Molecule Magnets

<p>Organometallic molecules based on [Dy(Cp<sup>R</sup>)<sub>2</sub>]<sup>+</sup> cations have emerged as clear front-runners in the search for high-temperature single-molecule magnets. However, despite a growing family of structurally-similar molecules, these molecules show significant variations in their magnetic properties, demonstrating the importance of understanding magneto-structural relationships towards developing more efficient design strategies. Here we refine our <i>ab initio</i> spin dynamics methodology and show that it is capable of quantitative prediction of relative relaxation rates in the Orbach region. Applying it to all reported [Dy(Cp<sup>R</sup>)<sub>2</sub>]<sup>+</sup> cations allows us to tease out differences in their relaxation dynamics, highlighting that the main discriminant is the magnitude of the crystal field splitting. We subsequently employ the method to predict relaxation rates for a series of hypothetical organometallic sandwich compounds, revealing an upper limit to the effective barrier to magnetic relaxation of around 2200 K, which has been reached. However, we show that further improvements to single-molecule magnets can be made by moving vibrational modes off-resonance with electronic excitations.</p>

scholarly journals Information model of the construction process in space and time

2021 ◽  
Vol 258 ◽  
pp. 09008
Author(s):  
Vadim Kabanov
Keyword(s):  
Construction Projects ◽  
3D Model ◽  
Information Model ◽  
Quantitative Information ◽  
Construction Process ◽  
Space And Time ◽  
Information Models ◽  
Building Process ◽  
Software Product ◽  
Source Of Information

BIM 3D technologies are traditionally used in the design of construction projects. The prospect of turning BIM 3D into BIM 5D is associated with the need to build information models of the construction process that are able to accurately determine the coordinates of construction and installation work at any time. The purpose of this work is to build an information model in space and time. The paper substantiates the sources of initial quantitative information. A BIM 3D model of a object of construction is a source of information for determining the coordinates (position in space) of the construction process. To calculate the speed of construction, it is proposed to use information about construction resources using national codes. A mathematical apparatus is proposed that can integrate the construction speed value into coordinates using BIM 3D technologies. A flowchart for software product development is proposed. The information model of the building process in space is represented as a vector. The coordinates of the beginning of a vector can always be represented as: X = 0, Y = 0, Z = 0, and the coordinates of the end of this vector are: X, Y, Z. Moving along the vector is described depending on the speed of build.

scholarly journals Crustal Fault Zones (CFZ) as Geothermal Power Systems: A Preliminary 3D THM Model Constrained by a Multidisciplinary Approach

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-24
Author(s):  
Hugo Duwiquet ◽  
Laurent Guillou-Frottier ◽  
Laurent Arbaret ◽  
Mathieu Bellanger ◽  
Théophile Guillon ◽  
...  
Keyword(s):  
High Temperature ◽  
Numerical Model ◽  
Power Systems ◽  
Fault Zone ◽  
Field Data ◽  
Large Scale ◽  
Numerical Models ◽  
Massif Central ◽  
Temperature Anomalies ◽  
Stress Direction

The Pontgibaud crustal fault zone (CFZ) in the French Massif Central provides an opportunity to evaluate the high-temperature geothermal potential of these naturally permeable zones. Previous 2D modeling of heat and mass transfer in a fault zone highlighted that a subvertical CFZ concentrates the highest temperature anomalies at shallow depths. By comparing the results of these large-scale 2D numerical models with field data, the depth of the 150°C isotherm was estimated to be at a depth of 2.5 km. However, these results did not consider 3D effects and interactions between fluids, deformation, and temperature. Here, field measurements are used to control the 3D geometry of the geological structures. New 2D (thin-section) and 3D (X-ray microtomography) observations point to a well-defined spatial propagation of fractures and voids, exhibiting the same fracture architecture at different scales (2.5 μm to 2 mm). Moreover, new measurements on porosity and permeability confirm that the highly fractured and altered samples are characterized by large permeability values, one of them reaching 10-12 m2. Based on a thermoporoelastic hypothesis, a preliminary 3D THM numerical model is presented. A first parametric study highlights the role of permeability, stress direction, and intensity on fluid flow. In particular, three different convective patterns have been identified (finger-like, blob-like, and double-like convective patterns). The results suggest that vertical deformation zones oriented at 30 and 70° with respect to the maximum horizontal stress direction would correspond to the potential target for high-temperature anomalies. Finally, a large-scale 3D numerical model of the Pontgibaud CFZ, based on THM coupling and the comparison with field data (temperature, heat flux, and electrical resistivity), allows us to explore the spatial geometry of the 150°C isotherm. Although simplified hypotheses have been used, 3D field data have been reproduced.

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