Miracle-dz/UniFAR-FTUs huggingface dataset:
Investigation of liquefied natural gas (LNG) dispersion using computational fluid dynamics

Liquefied Natural Gas (LNG) is currently playing an important role in the global energy markets. This is evidenced by the growing demand and increased construction of LNG facilities across Europe and United States. One of the challenging problems within the LNG industry is to protect the general public from hazards which could result from accidental spill. A spill of LNG creates a flammable gas cloud which disperses through the atmosphere constituting fire and explosion hazards. The most commonly performed hazard analysis involves verifying compliance with regulations such as NFPA 95A. One method that is currently being used to establish compliance is dispersion modelling using Computational Fluid Dynamics (CFD). However, real terrain dispersion simulation presents unique difficulty due to issues related to complex turbulent phenomena development, particularly in the presence of obstacles such as buildings in the path of the dispersing cloud The present study aims to demonstrate the potential of Large-Eddy Simulation (LES) for CFD simulation of LNG dispersion. For this purpose, ANSYS CFX is used to simulate LNG dispersion based on the Coyote Series Experiment. Turbulence in the flow field was prescribed via Smagnorinsky sub-grid scale model originally developed for atmospheric turbulence. Under the Smagorinsky model, effect of adopting different closure models for Smagorinsky coefficent has been investigated. This include a constant value coefficient, the Wall damping closure (LES-WALE) and the scale-invariance closure (dynamic model). Computational results are reported and compared with experimental data. Also, results were compared with those obtained from Reynolds-Averaged Navier-Stokes (RANS) simulations conducted as part of this study. Results of the simulations demonstrate that LES performs better than RANS in reproducing experimentally observed concentration trends. Of all three LES closure models of smagorinsky coefficient investigated in this study, the constant value approach with a Smagnorinsky constant of 0.1 produced results which compare more favourably with experiment. The poor performance of the LES-WALE and LES dynamic models is thought to have resulted from the models being over-dissipative and under-dissipative respectively in the near-ground region.
Genetic Indices Relationship to Hyperglycemia-associated Biomarkers: Consistency with miRNA Expression in Egyptian Children with T1DM

Objective: Micro RNAs (miRNAs) are gaining acceptance as novel biomarkers for the autoimmune disorders. However, miRNA profiles have not been investigated in individuals at risk of or diagnosed with type 1 diabetes mellitus (T1DM). To study the expression pattern of miRNAs in plasma obtained from patients with T1DM and compare with matched healthy controls. Methods: Equal numbers of patients with T1DM (90) and healthy-matched control children (90) were assessed for the expression profile of plasma miRNAs including miRNA-101-5p, miRNA-146-5p, miRNA-21-5p, miRNA-375, miRNA-126, and Let7a-5p using reverse transcriptase polymerase chain reaction methodology and quantitative real-time testing. Results: Analysis showed that miRNA-101, miRNA-21 and miRNA-375 were highly expressed, whereas, miRNA-146-5p, miRNA-126, and miRNA-Let7a-5p showed significantly low levels of expression in T1DM patients compared to controls (p<0.05). In addition, miRNA-101 and miRNA-146 correlated with age at diagnosis of T1DM and disease duration, respectively. Furthermore, multivariate analysis showed that miRNA-126 and Let7a-5p had a significant negative correlation with mean hemoglobin A1c (HbA1c) values. Conclusion: Dysregulation of the six miRNAs analyzed suggested a possible role as biomarkers in T1DM. miRNA-101 was correlated with age at diagnosis while miRNA-146 correlated with disease duration. Two further miRNAs correlated with the existing biomarker, HbA1c.
Particle-induced bit errors in high performance fiber optic data links for satellite data management

Experimental test methods and analysis tools are demonstrated to assess particle-induced bit errors on fiber optic link receivers for satellites. Susceptibility to direct ionization from low LET particles is quantified by analyzing proton and helium ion data as a function of particle LET. Existing single event analysis approaches are shown to apply, with appropriate modifications, to the regime of temporally (rather than spatially) distributed bits, even though the sensitivity to single events exceeds conventional memory technologies by orders of magnitude. The cross-section LET dependence follows a Weibull distribution at data rates from 200 to 1000 Mbps and at various incident optical power levels. The LET threshold for errors is shown, through both experiment and modeling, to be 0 in all cases! The error cross-section exhibits a strong inverse dependence on received optical power in the LET range where most orbital single events would occur, thus indicating that errors can be minimized by operating links with higher incident optical power. Also, an analytic model is described which incorporates the appropriate physical characteristics of the link as well as the optical and receiver electrical characteristics. Results indicate appropriate steps to assure suitable link performance even in severe particle orbits. >
The Contribution of Socio-Demographic Factors to Walking Behavior Considering Destination Types; Case Study: Temuco, Chile

The improvement of walking contributes to maintain the minimum rate of physical activity and therefore the residents’ public health. This is while the amount of walking in daily transport of inhabitants has significantly decreased during the last decades in Temuco, Chile. In addition, the impact of socio-demographic as well as social factors on the improvement of walking behavior has been paid less attention in previous studies. This study aims to examine the contribution of socio-demographic factors and the active family environment to walking behavior as well as walking level based on three types of destinations in Temuco. The results of “Encuesta Origin Destino” (EOD) in Temuco were used to examine the objectives. It was found that a high percentage of people who walk in Temuco belong to low-income families. Moreover, most of the people who walk, do not have a driver’s license nor private cars in their household. Certain socio-demographic factors such as age, gender, driver’s license, private cars, and access to TV were found to have associations with overall walking behavior as well as walking level depending on three different destination types. Furthermore, the correlation was found between walking behavior and active family environment. These findings were discussed and their implications were addressed as well.
Impact of Penicillin Allergy Label on Length of Stay and Mortality in Hospitalized Patients through a Clinical Administrative National Dataset

Background: Penicillin allergy is a common problem in the management of infectious diseases. The aim of this study was to determine the impact of penicillin allergy on length of hospital stay (LOHS) among hospitalized adult patients and on in-hospital mortality at a national level. Methods: A retrospective cohort study of adult patients discharged from the Spanish Hospital System between 2006 and 2015 was conducted using the Minimum Basic Data Set (MBDS). We compared LOHS and in-hospital mortality of adult patients whose records contained penicillin allergy code V14.0 (International Classification of Diseases, Ninth Revision, Clinical Modification) as a secondary diagnosis, with a random sample without such a code. Results: We identified 981,291 admissions with code V14.0, which corresponded to 2.63% of all hospitalizations. Adults patients with a penicillin allergy label were significantly older than patients without such a label, with a median of 70 years (interquartile range [IQR]: 51–80) versus 63 years (IQR: 40–77). The proportion of women and the prevalence of infectious diseases were higher in the group with a penicillin allergy label (61.40% vs. 53.84%; 34.04% vs. 30.01%; respectively). We found a higher median Elixhauser-Van Walraven score in hospitalized patients with an allergy label. The median LOHS for hospitalizations with a penicillin allergy label (5 [IQR: 2–9]) was significantly longer than that in those without such a label (4 [IQR: 2–9]). Multivariate analysis showed an increase in LOHS due to the penicillin allergy label (odds ratio [OR] [95% confidence interval [CI]: 1.061 [1.057–1.065]) and a decrease in mortality in penicillin allergy records (OR [95% CI]: 0.834 [0.825–0.844]). Conclusion: In our study, the prevalence of a penicillin allergy label in hospitalized patients, using the MBDS, is low. Hospitalizations with an allergy label was associated with a longer LOHS. However, penicillin-allergic patients did not show higher mortality rates. Inaccurate reporting of penicillin allergies may have an impact on healthcare resources.
Emotional and behavioural responses to auditory interfaces in commercial vehicles

In this paper, we argue that emotional reactions may guide the design of in-vehicle auditory displays since emotion has strong consequences for behaviour and information processing. A simulator study with 30 participants was conducted in which auditory icons were contrasted to abstract earcon sounds in more or less imminent collision scenarios and 3D sounds were tested against monophonic sounds in lane change scenarios. Self-report and physiological measures of emotional response as well as behavioural measures (e.g., brake response time) were used. It was found that auditory icons gave up to 600 ms faster brake response times than abstract sounds in imminent collision scenarios and that 3D sound gave a stronger emotional response in lane change scenarios. Moreover, the results indicate that emotion can predict behaviour, e.g., sounds rated as being more activating and negative also gave quicker response times.
Connection between Anthropogenic Water Diversion and Hydrodynamic Condition in Plain River Network

The increase in the rate of water renewal driven by hydrodynamics contributes to improving the water quality of the plain river network. Taking the lakeside river network in Wuxi as an example, through numerical simulation, polynomial fitting, correlation analysis, and principal component analysis, the hydrodynamic responses of urban lake-connected river networks to water diversion and hydrodynamic grouping were researched. Based on numerical model and influence weight analysis, we explored the improvement of hydrodynamic conditions of plain river network with strong human intervention and high algal water diversion. The results showed that: (1) The relationship between water diversion impact on river network flow velocity and water diversion flux was not as simple a linear relationship. It could be reflected by polynomial. The water transfer interval in dry season with high hydrodynamic efficiency (HE) was lower than 10 m3/s and higher than 30 m3/s, and the HE increased significantly when the water transfer flow was higher than 20 m3/s in the wet season. (2) According to the main hydrodynamic driving factors, the channels in the river network could be divided into three types: water conservancy projects, river and lake water level difference, and river channel characteristic. The correlations of rivers’ flow velocity in each group were very high. (3) The influence weights of water conservancy projects, river and lake water level difference, and river channel characteristic on the whole river network dynamics were 65, 21, and 12.4%, respectively, and the other factors contributed 1.6% of the weight.
Thermoplastic Mandrel for Manufacturing Composite Components with Complex Structure

This study was to solve the mandrel demolding problem after curing the composite component with complex structure. In this paper, a reusable thermoplastic mandrel with heating softening characteristics was developed by resin transfer molding (RTM). The glass transition temperature (Tg), surface roughness, and reusability of the mandrel, as well as the shape, surface roughness, thickness uniformity, and internal quality of the formed structure, were tested. The result showed that the Tg of the mandrel was between 80 and 90 °C and the surface roughness was less than Ra 0.5 μm. Additionally, the mandrel can be recycled and can still maintain a good shape after 20 times of deformation. By using this method, the demolding process can be realized by heating and softening the mandrel. The profile error of the formed structure was within 0.5 mm, the surface roughness was less than Ra 0.5 μm, the thickness error was within 0.2 mm, and the average porosity of the upper and lower halves of composite parts was 0.72% and 0.61%. All those data showed that the formed part was in good shape and of good quality. The thermoplastic mandrel can solve the demolding problem of composite materials with complex shapes.
The developmental activities of skilled youth CONCACAF soccer players and the contribution of their development system

Small/er soccer nations rely strongly on developing youth athletes into experts in adulthood due to financial, logistical, and coach education constraints. One factor that contributes to this expertise is activities engaged in during childhood. Researchers have described these activities by focusing on larger, well-developed countries that often have larger participation rates and higher competition levels than their smaller counterparts. Therefore, to provide more specific information to support talent development in smaller soccer nations, a survey of the youth development system of a small soccer nation was conducted, alongside recording the developmental activities of skilled and less-skilled soccer players within this system. Key stakeholders (e.g., technical director) completed a youth development system survey. Skilled soccer players (n = 12) who were representing their country at U17 level and less-skilled players (n = 13) that had never played for their country completed a Participation History Questionnaire. Skilled players engaged in significantly higher amounts of individual practice in both childhood and early adolescence compared to less-skilled players. Survey data indicated that the greater amounts of individual practice for the skilled players stemmed from a lack of finances, playing facilities, and a formal coach education program. Results from this study may inform future practices and processes in the youth development systems of small/er soccer nations and their national associations.
Measuring Uncertainty: Supplementary Material

This document contains supplementary material for the paper entitled “Measuring Uncertainty”and has two parts. The …rst part provides the results of robustness exercises based on (i) alternative weights used to aggregate individual uncertainty series; (ii) alternative estimates of individual uncertainty; (iii) alternative conditioning information using recursive out-of-sample
New window functions generated by means of time convolution-spectral leakage error

The new window class, generated by the time convolution of well-known classic windows, is presented. By multiple auto-convolution of windows it is possible to obtain both flat-top and high sidelobe attenuation, making new windows very suitable for harmonic amplitude evaluation in the nonsynchronous sampling case (i.e. when noninteger number of cycles lies in the interval of analysis). The expressions describing an error caused by spectral leakage are derived. The new window class is tested on the periodic signal with known harmonic contents. The results obtained confirm the applicability of new windows in the analysis of the periodic signal waveforms.
Large-Area Conformable Sensor for Proximity, Light Touch, and Pressure-Based Gesture Recognition

In this paper, we present a capacitance-based sensor array for physical human-robot interaction (pHRI) applications that can measure the proximity, near-zero-force (NZF) contacts, and pressure between a robot and human body. The top segment including the electrodes is made of soft, stretchable materials, while the bottom segment consists of electrodes patterned from a thin copper film. The resulting device is soft and conformable to smooth curved surfaces of robot links while ensuring high signal integrity. It can be fabricated in different sizes from fingertips to torso because the fabrication process employs conventional, scalable methods. Using this sensor, we investigate the problem of recognizing gentle contact gestures often seen in affectionate physical interactions. The output of this multi-modal sensor is a 2D array compatible with machine learning algorithms used for pressure and image-based recognition problems. We utilize the spatio-temporal information of the 2D capacitance data by applying two existing deep neural network architectures. The highest accuracy achieved is over 99% in 7-class recognition of contact gestures involving proximity, NZF contacts, and medium pressure.
Logistics Service Quality in Online Shopping: A Bibliometric Analysis

Abstract This paper outlines the main areas and latest developments of logistics service quality (LSQ) in the context of business to consumer (B2C) online shopping and proposes future research directions. More specifically, this paper has three objectives: What is the status of research of LSQ in B2C e-tailing? Which themes involving the field are the most popular among scholars? What are the possibilities for future research? This study examined a sample of 177 papers from the Scopus and ISI Web of Science databases to find research activity on LSQ in B2C online shopping between 2001 and early 2021 using bibliometric analysis. The methodology involves selecting, analyzing, and classifying 177 papers into authors, journals, time, focus areas, keywords, country, citation, co-citation, and thematic distribution analysis. Four major themes have emerged, LSQ for integrating traditional retail with omnichannel retail; LSQ and inventory management; LSQ and supply chain collaboration and LSQ transformation to E-LSQ. It gives researchers and scholars information to help them work on new developments of LSQ in B2C e-tailing and create strategies, models, and structures for increasing firm performance and customer satisfaction.
Underwater Tracking In Three Dimensions Using The Direct Linear Transformation And A Video-Based Motion Analysis System

Although kinematic measurements can be made underwater using traditional electro-mechanical transducers, the additional complexity introduced by an underwater environment can be prohibitive. Further, many activities which occur underwater defy quantification by traditional methods. Optical techniques are another avenue which can be considered. Various optical systems have been devised for quantifying motion, but none has addressed the underwater problem in a general fashion--as a class of problems to be solved. Close-range tracking in three dimensions has been performed in air using the Direct Linear Transformation. 1,2 However, this algorithm is not valid when the image-forming rays are bent by refraction at an air/water interface. Although a (non-linear) adaption of the Direct Linear Transformation could be developed, for most purposes the additional complex-ity of such an algorithm would be prohibitive for automated tracking. This paper describes a simple, physical solution to the refraction problem which has been used for several applications involving automated underwater tracking in three dimensions using a video-based motion analysis system.
Delineation of Banyumas Sub-Basins using Gravity Anomaly Based on Trend Surface Analysis Equation

A study using gravity methods in the Banyumas Basin, located in the southern part of Central Java, Indonesia had been conducted to generate a map for regional geological features in sub-volcanic basin related to petroleum system. This study used the first and second-order of Trend Surface Analysis (TSA) to separate gravity anomaly into regional and residual components. Matrix inversion is applied to obtain constants values for both the first and second-order of TSA. To interpret geological features related to oil and gas study, residual components are used for gravity anomaly. Residual anomaly is also compared for both first and second order of TSA with a regional geological map to validate the result. Residual anomaly from the second order of TSA showed a very comparable result to geological features, as shown in the regional geological map, compared to those of the first order of TSA. These results also showed a strong contrast of some important geological features such as the Gabon-Nusakambangan Formation outcrop, Karangbolong outcrop, and the eastern part of the south Serayu mountain arc. This study also displayed two potential subbasins i.e Citanduy and Majenang sub-Basin that might be a possible setting in which source rocks of the Banyumas Basin were deposited. From this study, it can be concluded that TSA showed a reliable result of separating gravity anomaly data set into regional and residual components.Keywords: Gravity anomaly, Banyumas Basin, petroleum system, trend surface analysis (TSA).
Road mapping recovery from the impacts of multiple crises: framing the role of domestic self-drive tourism in regional South Australia

ABSTRACT In regional South Australia, a combination of droughts, bushfires and the COVID-19 pandemic has presented dynamic challenges to tourism economies. As inbound international tourism remains unlikely to return to pre-COVID-19 levels for the foreseeable future, the importance of domestic tourism has become further pronounced, most notably in regions that have been affected by major declines in tourist flows. This exploratory qualitative study reports on regional South Australians’ participation in domestic tourism during the pandemic and the factors that have influenced how they travel. Our findings reveal that participants had predominantly engaged in self-drive tourism due to the feelings of safety it offered in contrast to other modes of transport, the opportunities it permitted in fostering reconnections and supporting wellbeing, and because of its ability to evoke positive feelings and emotions that were structured around adventure and discovery. Moreover, it was additionally observed that self-drive tourism offered practical opportunities to engage in altruistic pursuits to support crisis-affected regions across the state. Therefore, this paper offers timely insights into the behaviours of regional South Australians during the pandemic and how they utilised self-drive tourism to support both personal and community recovery from the impacts of multiple crises across the state.