scholarly journals A Novel Approach for U-Value Estimation of Buildings’ Multi-layer Walls Using Infrared Thermography and Artificial Intelligence

2021 ◽  
pp. 35-43
Author(s):  
Arijit Sen ◽  
Amin Al-Habaibeh
Keyword(s):  
Infrared Thermography ◽  
Field Work ◽  
High Accuracy ◽  
The Novel ◽  
Novel Approach ◽  
Wide Range ◽  
Value Estimation ◽  
U Value ◽  
Artificial Neural Network Ann

AbstractEstimating the U-value of walls of buildings is a key process to evaluate the overall thermal performance. Low U-value in buildings is desired in order to keep heat within the envelop and consume less energy in heating. Addressing the limitations in the currently used U-value estimation techniques, this paper proposes a novel approach for estimating the U-value of the envelop of buildings using infrared thermography and Artificial Neural Network (ANN) with the application of a point heat source. The novel system is calibrated by training the ANN in a lab environment using a wide range of samples with multi-layers to be able to estimate the in situ U-value of walls in real buildings during field work with relatively high accuracy.

scholarly journals Propagation Analysis of the Coronavirus Pandemic on the Light of the Percolation Theory

2021 ◽  
Author(s):  
Moez Guettari ◽  
Ahmed El Aferni
Keyword(s):  
Electrical Conductivity ◽  
Percolation Theory ◽  
Scaling Laws ◽  
High Accuracy ◽  
The Novel ◽  
Infected People ◽  
Boltzman Equation ◽  
Novel Approach ◽  
Propagation Analysis ◽  
Speed Of Propagation

Efforts to combat the Covid-19 pandemic have not been limited to the processes of vaccine production, but they first began to analyze the dynamics of the epidemic’s spread so that they could adopt barrier measures to bypass the spread. To do this, the works of modeling, predicting and analyzing the spread of the virus continue to increase day after day. In this context, the aim of this chapter is to analyze the propagation of the Coronavirus pandemic by using the percolation theory. In fact, an analogy was established between the electrical conductivity of reverse micelles under temperature variation and the spread of the Coronavirus pandemic. So, the percolation theory was used to describe the cumulate infected people versus time by using a modified Sigmoid Boltzman equation (MSBE) and several quantities are introduced such as: the pandemic percolation time, the maximum infected people, the time constant and the characteristic contamination frequency deduced from Arrhenius equation. Scaling laws and critical exponents are introduced to describe the spread nature near the percolation time. The speed of propagation is also proposed and expressed. The novel approach based on the percolation theory was used to study the Coronavirus (Covid-19) spread in five countries: France, Italy, Germany, China and Tunisia, during 6 months of the pandemic spread (the first wave). So, an explicit expression connecting the number of people infected versus time is proposed to analyze the pandemic percolation. The reported MSBE fit results for the studied countries showed high accuracy.

Model and Infrastructure for Communications in Context-Aware Services

2011 ◽  
pp. 472-486
Author(s):  
Cristina Rodriguez-Sanchez ◽  
Susana Borromeo ◽  
Juan Hernandez-Tamames
Keyword(s):  
Mobile Communications ◽  
Local Environment ◽  
Local Context ◽  
Context Aware ◽  
The Novel ◽  
Novel Approach ◽  
Complex Process ◽  
Wide Range ◽  
Ambient Intelligent ◽  
New Type

The appearance of concepts such as “Ambient Intelligent”, “Ubiquitous Computing” and “Context-Awareness” is causing the development of a new type of services called “Context-Aware Services” that in turn may affect users of mobile communications. This technology revolution is a a complex process because of the heterogeneity of contents, devices, objects, technologies, resources and users that can coexist at the same local environment. The novel approach of our work is the development of a ”Local Infrastructure” in order to provide intelligent, transparent and adaptable services to the user as well as to solve the problem of local context control. Two contributions will be presented: conceptual model for developing a local infrastructure and an architecture design to control the service offered by the local infrastructure. This infrastructure proposed consists of an intelligent device network to link the personal portable device with the contextual services. The device design is modular, flexible, scalable, adaptable and reconfigurable remotely in order to tolerate new demanding services whenever are needed. Finally, the result suggests that we will be able to develop a wide range of new and useful applications, not conceived at origin.

scholarly journals “Candidatus Finniella” (Rickettsiales, Alphaproteobacteria), Novel Endosymbionts of Viridiraptorid Amoeboflagellates (Cercozoa, Rhizaria)

2015 ◽  
Vol 82 (2) ◽  
pp. 659-670 ◽  
Author(s):  
Sebastian Hess ◽  
Andreas Suthaus ◽  
Michael Melkonian
Keyword(s):  
Rrna Gene ◽  
The Novel ◽  
Single Nucleotide ◽  
Content Type ◽  
Obligate Intracellular ◽  
Wide Range ◽  
Candidate Species ◽  
Novel Bacteria ◽  
Obligate Intracellular Bacteria

ABSTRACTTheRickettsiales(Alphaproteobacteria) are obligate intracellular bacteria that colonize a wide range of eukaryotic hosts, including diverse metazoa and protists. Here, we characterize rickettsial endosymbionts discovered in the cytoplasm of the algivorous amoeboflagellatesViridiraptor invadensandOrciraptor agilis(Viridiraptoridae, Cercozoa, Rhizaria), supplying evidence of free-living, phagotrophic members of the Cercozoa serving as hosts forRickettsiales. According to 16S rRNA gene phylogenies, the bacteria represent two closely related but distinct genotypes within a deep-branching rickettsial clade, which contains the genera “CandidatusOdyssella,” “CandidatusParacaedibacter,” and “CandidatusCaptivus.” Using the full-cycle rRNA approach, we detected the novel bacteria in four of nine viridiraptorid strains tested. Furthermore, two specific oligonucleotide probes with a single-nucleotide-difference discriminated both bacterial genotypes by fluorescencein situhybridization (FISH). We establish the candidate species “CandidatusFinniella inopinata” (found inViridiraptor invadens) and “CandidatusFinniella lucida” (found inOrciraptor agilis) for the novel bacteria and propose a new, provisional family ofRickettsiales, “CandidatusParacaedibacteraceae.”

Application of Artificial Neural Network Based Gas Path Diagnostics on Gas Pipeline Compressors

2020 ◽  
Author(s):  
Suleiman M. Suleiman ◽  
Yi-Guang Li
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Field Measurements ◽  
Discharge Temperature ◽  
Novel Approach ◽  
Wide Range ◽  
Artificial Neural ◽  
Artificial Neural Network Ann ◽  
Compressor Map ◽  
Map Data

Abstract This paper presents the development of an artificial neural network (ANN) Gas Path Diagnostics (GPD) technique applied to pipeline compression system for fault detection and quantification. The work detailed the various degradation mechanisms and the effect of such degradations on the performance of natural gas compressors. The data used in demonstrating the ANN diagnostics is so derived using an advanced thermodynamic performance simulation model of integrated pipeline and compressor systems, which has embedded empirical compressor map data and pipeline resistance model. Implantation of faults within the model is in such a way to account for faults degradations caused by fouling, erosion and corrosion, of various degrees of severities, to obtain wide range of corresponding simulated “true” measurements. In order to account for uncertainties normally encountered in field measurements, Gaussian noise distribution was combined with simulated true measurements, which depends on the instrument’s tolerances. Furthermore, since judicious measurements selection are crucial in ensuring flawless GPD predictions, a sensitivity and correlation analysis of the available measurements revealed that discharge temperature, rotational speed and torque are the most effective measurements for the diagnostics with acceptable degrees of accuracies. The measurements observability technique is a novel approach in pipeline compressor diagnostics. Analytical case studies of the developed method show that, a selected ANN architecture can detect and quantify faults related to degradation in efficiency and flow capacities in the presence of instrument error, varied operational and environmental conditions.

scholarly journals Comparison of Infrared Thermography and Heat Flux Method for Dynamic Thermal Transmittance Determination

Buildings ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 132 ◽  
Author(s):  
Mergim Gaši ◽  
Bojan Milovanović ◽  
Sanjin Gumbarević
Keyword(s):  
Heat Flux ◽  
Infrared Thermography ◽  
Dynamic Method ◽  
Flux Method ◽  
Microsoft Excel ◽  
Experimental Procedure ◽  
Thermal Transmittance ◽  
U Value ◽  
Stationary Heat Transfer

This paper proposes an alternative experimental procedure that uses infrared thermography (IRT) for measuring the surface temperature of building elements, through which it is possible to approximate the thermal transmittance or the U-value. The literature review showed that all authors used similar procedures that require semi-stationary heat transfer conditions, which, in most cases, could not be achieved. The dynamic and the average methods that are given in ISO 9869 were also used with the IRT and the heat flux method (HFM). The dynamic method (DYNM) shows a higher level of accuracy compared to the average method (AVGM). Since the algorithm of the DYNM is more complicated than that of the AVGM, Microsoft Excel VBA was used to implement the algorithm of the DYNM. Using the procedure given in this paper, the U-value could be approximated within 0–30% of the design U-value. The use of IRT, in combination with the DYNM, could be used in-situ since the DYNM does not require stable boundary conditions. Furthermore, the procedure given in this paper could be used for relatively fast and inexpensive U-value approximation without the use of expensive equipment (e.g., heat flux sensors).

scholarly journals The new equation for calculation the density of sea water from measurements of the speed of sound

2017 ◽  
pp. 12-18
Author(s):  
A. N. Grekov ◽  
◽  
N.A. Grekov ◽  
E.N. Sychov ◽  
◽  
...  
Keyword(s):  
Equation Of State ◽  
Sound Velocity ◽  
Speed Of Sound ◽  
Sea Water ◽  
High Accuracy ◽  
Wide Range ◽  
New Equation

In this work the new kind of the equation of state expressing the density of sea water through independent and in situ measurable parameters: temperature, pressure and sound velocity, is justified theoretically and implemented in practice. The novelty of the approach is that the use of sound velocity as one of the arguments makes it possible measuring of the density of sea water without measurements of salinity. The developed equation reproduces the density of sea water with a high accuracy in a wide range of parameters.

scholarly journals Advancing national climate change risk assessment to deliver national adaptation plans

2018 ◽  
Vol 376 (2121) ◽  
pp. 20170295 ◽  
Author(s):  
R. F. Warren ◽  
R. L. Wilby ◽  
K. Brown ◽  
P. Watkiss ◽  
Richard A. Betts ◽  
...  
Keyword(s):  
Climate Change ◽  
Risk Assessment ◽  
The Novel ◽  
Climate Change Risk ◽  
Novel Approach ◽  
Statutory Duty ◽  
Wide Range ◽  
Impact Indicators ◽  
The Uk ◽  
Adaptation Action

A wide range of climate vulnerability and risk assessments have been implemented using different approaches at different scales, some with a broad multi-sectoral scope and others focused on single risks or sectors. This paper describes the novel approach to vulnerability and risk assessment which was designed and put into practice in the United Kingdom's Second Climate Change Risk Assessment (CCRA2) so as to build upon its earlier assessment (CCRA1). First, we summarize and critique the CCRA1 approach, and second describe the steps taken in the CCRA2 approach in detail, providing examples of how each was applied in practice. Novel elements of the approach include assessment of both present day and future vulnerability, a focus on the urgency of adaptation action, and a structure focused around systems of receptors rather than conventional sectors. Both stakeholders and reviewers generally regarded the approach as successful in providing advice on current risks and future opportunities to the UK from climate change, and the fulfilment of statutory duty. The need for a well-supported and open suite of impact indicators going forward is highlighted. This article is part of the theme issue ‘Advances in risk assessment for climate change adaptation policy'.

Increasing universality of tank wagons designed to transport petrochemical cargoes

2020 ◽  
Vol 17 (4) ◽  
pp. 477-489
Author(s):  
A. N. Fomin ◽  
◽  
M. N. Suvernev ◽  
N. A. Bitiutskii ◽  
A. V. Pesliak ◽  
...  
Keyword(s):  
Practical Importance ◽  
Throughput Capacity ◽  
Rolling Stock ◽  
The Novel ◽  
Structural Elements ◽  
Regulatory Requirements ◽  
Safety Requirements ◽  
Reference Guide ◽  
Wide Range

Objective: Characterise the methods for optimisation of tank wagon fl eet. Determine the advantages obtained by the proprietor from wagon modernization. Establish the opportunity for increasing universality of rolling stock on the example of modernisation of tank wagons designed to transport petrochemical cargoes. Methods: Parameters of tank wagons for petrochemical cargo transportation in operation were compared to those of a modernised wagon. Structural elements of a wagon that require modernisation to be consistent with current regulatory requirements were identifi ed. Results of calculations and tests were analysed, and wagon certifi cation was carried out. Results: Ways of modernisation of tank wagons are shown. Primary wagon structural elements that require modernisation are described. Strength, fatigue strength and stability calculations were carried out. Safety valve throughput capacity is calculated, and requirements for this index during transportation of petrochemical cargoes. Optimum design for a drain device is established. A series of engineering prototype verifi cation tests in situ was run, including durability tests which confi rmed the possibility of safe operation of a modernised wagon throughout its service life. The wagon was certifi ed for compliance with railway rolling stock safety requirements. Practical importance: The studies conducted confi rm possibility of modernisation of petroleum and oil tank wagons for transportation of a wide range of cargoes. This would allow create a project for tank wagon modernisation. The novel wagon type is included in the Cargo Wagon Design Reference Guide. Proprietor can implement modernisation of wagons in accordance with the developed modernisation project

scholarly journals Novel Protocol for Acute In Situ Ecotoxicity Test Using Native Crustaceans Applied to Groundwater Ecosystems

Water ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1132
Author(s):  
Andrea Castaño-Sánchez ◽  
Florian Malard ◽  
Gabriela Kalčíková ◽  
Ana Sofia P. S. Reboleira
Keyword(s):  
Native Species ◽  
Synthetic Medium ◽  
The Novel ◽  
Ecotoxicity Test ◽  
Laboratory Conditions ◽  
Wide Range ◽  
Groundwater Ecosystems ◽  
Reference Toxicant ◽  
Testing Field

Current standardized laboratory test protocols use model species that have limitations to accurately assess native species responses to stressors. We developed and tested a novel acute in situ protocol for testing field-collected organisms. We used Asellus aquaticus and NaCl as a reference toxicant to test for the effects of location (laboratory vs. in situ), medium (synthetic vs. field water), substrate (presence vs. absence), and protocol replicability. We further tested the protocol using groundwater-adapted isopods: Proasellus assaforensis for the effect of location, P. cavaticus of medium and P.lusitanicus of substrate. Our results showed that A.aquaticus’ lethality obtained with the novel acute in situ protocol did not significantly differ from those from laboratory testing. However, laboratory tested P.assaforensis showed a higher sensitivity, suggesting that its acclimation to laboratory conditions might have pernicious effects. A. aquaticus and P. cavaticus showed a higher mortality using synthetic medium in situ and under laboratory conditions, which overestimated the stressor’s effect. Besides, substrate use had no significant effect. The novel acute in situ protocol allows the use of native species under realistic scenarios. It is particularly well adapted for assessing the risk of groundwater ecosystems but it can be applied to a wide range of ecosystems.

Culture, desire and consumer culture in America in the new age of social media

2016 ◽  
Vol 19 (4) ◽  
pp. 416-425 ◽  
Author(s):  
Thomas Joseph Maschio
Keyword(s):  
Significant Finding ◽  
The Novel ◽  
Content Type ◽  
Product Categories ◽  
Ethnographic Interviews ◽  
Novel Approach ◽  
Wide Range ◽  
The Creation ◽  
Culture Creation ◽  
Consumer Desire

Purpose The purpose of this paper is to consider the role that consumer desire plays in the creation of new culture forms. Design/methodology/approach This paper is an opinion piece based on the author’s reflections on hundreds of in-depth ethnographic interviews, each generally of three to four hours length, carried out over the past 20 years, concerning a range of product categories and services, on behalf of a wide range of business clients. Findings The most significant finding is that a desire for new forms of sociality is driving the creation of new forms of commercial culture and of communication in culture. Originality/value This paper takes the novel approach of considering consumer desire as an engine of culture creation and of culture change.

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