Miracle-dz/UniFAR-FTUs huggingface dataset:
The Transient Response of Fluid Lines

Related Content Customize your page view by dragging and repositioning the boxes below. Related Journal Articles Filter by Topic > A Transient Response Approximation for Noncircular Fluid Transmission Lines J. Fluids Eng (June, 1976) Transient Response of Fluid Viscoelastic Lines J. Fluids Eng (September, 1982) Application of Linearized Friction Impedance Models to Complex Fluid Systems J. Fluids Eng (June, 1973) [+] View More Related Proceedings Articles Filter by Topic > Thermal Performance Prediction for High Power Processors at High Altitude IMECE2005 (2005) Measurement of Electrical Properties of Sickle Cells From Electrical Impedance of Cell Suspension IMECE2017 (2017) Electrical Impedance Matching of PZT NanoGenerators IDETC/CIE2017 (2017) [+] View More Related eBook Content Plate Exchangers Heat Exchanger Engineering Techniques> Chapter 8 Extended Surfaces Thermal Management of Microelectronic Equipment> Chapter 8 Experimental Heat Transfer to Other Fluids at Sections PDF Email Share Get Citation Get Alerts Some tools below are only available to our subscribers or users with an online account. SEARCH ADVANCED SEARCH Search Journal of Fluids Engineering
EVALUATION OF THREE NA/LT IN-BIN DRYING STRATEGIES IN FOUR CORN BELT LOCATIONS

The performance of the variable heat (VH), continuous natural air (CNA), and continuous constant heat (CH) fan and burner control strategies were evaluated using simulation for four locations (Indianapolis, Ind.; Des Moines, Iowa; Lansing, Mich.; and Minneapolis, Minn.), three airflow rates (0.83, 1.1, and 1.7 m3 min-1 t-1), and two harvest dates (25% and 75% of the harvest period). The ideal airflow rate for each location/harvest date combination was determined based on the criterion of limiting the dry matter loss (DML) to 0.5% or less, and minimizing the total drying cost. An airflow rate of 1.1 m3 min-1 t-1 was identified as optimum for the VH and the CH in-bin drying control strategies in all locations. In a comparison based on total drying cost, final moisture content (MC) range, average final MC, and drying ending date, the VH strategy outperformed the other two strategies (CNA and CH) for all location and harvest date combinations. A sensitivity analysis showed that the VH strategy costs were sufficiently stable to make it the least-cost option for the entire range of propane, electricity, and grain prices explored.
Walleye Pollock Gadus chalcogrammus, a Species with Continuous Range from the Norwegian Sea to Korea, Japan, and California: New Records from the Siberian Arctic

The first records of walleye pollock Gadus chalcogrammus Pallas, 1814 in the seas of the Siberian Arctic (the Laptev Sea, the Kara Sea, the southeastern Barents Sea), are documented. Information about the external morphology (morphometric and meristic characters), photos of sagittal otoliths and fish, and data on the sequences of the CO1 mtDNA gene are presented. The results of a comparative analysis indicate that walleye pollock caught in the Siberian Arctic do not differ in principle from North Pacific and North Atlantic individuals. Previous conclusions about the conspecificity of the walleye and Norwegian pollock Theragra finnmarchica are confirmed. New captures of walleye pollock in the Siberian Arctic allow us to formulate a hypothesis about its continuous species’ range from the coasts of Norway in the North Atlantic to the coasts of Korea, Japan, and California in the North Pacific. The few records of walleye pollock in the North Atlantic originate from the North Pacific due to the transport of early pelagic juveniles to the Arctic by currents through the Bering Strait and further active westward migrations of individuals which have switched to the bentho-pelagic mode of life.
The early stage of pregnancy modulates toll-like receptor signaling in the ovine liver

ABSTRACT Toll-like receptors (TLRs) participate in maternal immune regulation at multiple maternal-fetal interfaces. The liver is crucial for innate and adaptive immunity during pregnancy. The objective of this study was to measure the expression of genes and proteins related to TLR signaling. In this study, livers were obtained from ewes on day 16 of the estrous cycle, and on days 13, 16 and 25 of gestation, and RT-qPCR, western blot and immunohistochemistry were employed to measure the expression of genes and proteins related to TLR signaling, including TLR2, TLR3, TLR4, TLR5, TLR7, TLR9, myeloid differentiation primary-response protein 88 (MyD88), tumor necrosis factor receptor associated factor 6 (TRAF6) and interleukin-1-receptor-associated kinase 1 (IRAK1). Our data showed that the expression levels of TLR2, TLR3, TLR5, TLR9 and TRAF6 were increased, but those of TLR4 and TLR7 were decreased in the liver during early pregnancy. In addition, the expression levels of MyD88 and IRAK1 were the highest on days 13 and 16 of pregnancy, respectively, and the MyD88 protein was located in endothelial cells of proper hepatic arteries and portal veins and in hepatocytes. In conclusion, early pregnancy modulates TLR signaling in the maternal liver in sheep, which may participate in maternal immune regulation.
A New Approach for Compressor Endwall Contouring

Against the background of the high development status of modern axial compressors, a further performance enhancement is linked with the extension of the design space in the development process and the concentration on the essential loss mechanisms in the compressor. The performance of a compressor cascade is considerably influenced by secondary flow effects in the near endwall region, since up to 50 percent (for low aspect ratio) of the losses in the bladed channel of a turbomachinery are linked to the endwalls. In this context the application of non-axisymmetric profiled endwalls provides a potential for compressor improvement. The paper presents the detailed experimental and numerical investigation of controlling the endwall cross flow in a compressor cascade. The general approach is based on a boundary layer fence arrangement, whose application on the compressor endwall works as a non-axisymmetric endwall contour. This non-axisymmetric endwall modification constrains the interaction of the endwall cross flow with the suction side boundary layer, thus the onset of the corner separation is delayed and a significant loss reduction of 8 percent is achieved. The experiments were carried out in a linear compressor cascade at the high-speed cascade wind tunnel of the DLR in Berlin at peak efficiency (design point) and off-design of the cascade at Mach number M = 0.67. Furthermore, high fidelity 3D-RANS flow simulations were performed in order to analyze the complex blade and endwall boundary layer interaction. The combined consideration of experimental and numerical flow pattern allows a detailed interpretation and description of the resulting flow phenomena.Copyright © 2011 by ASME
Approaches to understanding, analysing and developing situation awareness

The term ‘situation awareness’ (SA) is still increasing in popularity in both ergonomics and other disciplines. A task-oriented systems perspective of SA is proposed from which conclusions flow concerning the task of ‘achieving and maintaining SA’. This paper also examines the status of the concept by illustrating its distributed and temporal complexities in the context of nuclear control room teams tackling a simulated plant disturbance and how a process tracing methodology can be used to identify these aspects of SA. Finally, some counterintuitive methods to cognitive engineering and interface design are described that can improve aspects of SA, depending upon what criteria of task performance are important, by encouraging a person to adopt a more cognitive-based interaction strategy.
Australians’ Experience of the COVID-19 Pandemic: Advantages and Challenges of Scaling Up Qualitative Research Using Large-Scale Rapid Analysis and Building Research Capacity Across Rural Australia

Australia responded to the emergence of the COVID-19 global pandemic in 2020 by initiating a border and bio-security zone lockdown and policies emphasising social distancing and hand hygiene. To understand the public response to this, Southern Queensland Rural Health commenced a two-phase research project exploring attitudes and practices towards the COVID-19 pandemic in Australia. An initial online survey foreshadowed 90 qualitative interviews with respondents to explore what the pandemic meant for everyday life. This paper details use of a qualitative approach by a national collaborative of investigators from 9 rural university departments in Australia who came together to research the qualitative phase of the project. Our methodological approach aligned with extant literature describing the management of large-scale interviewing and coding in the context of unfolding and dynamic contexts. The ‘RITA’ model (Rapid Identification of Themes from Audio recordings) entails a five-step process designed to progress from identifying research foci, through deductive and iterative coding to identify key concepts. We used a combination of coding templates, organisation and tagging of field notes and real-time sharing through a secure cloud drive to create a data set for immersive analysis and generation of ideas. Use of this method has added to the collective knowledge about successful rapid research investigations, recognising the inherent tension between speed and rigour. This is not a binary but a dialectic; trustworthiness is integral to qualitative research. However, use of fresh approaches is accommodated by new technologies and can preserve adequate rigour while enabling collaboration, research capacity building and increasing the pace of data collection and analysis. This project has presented methodological challenges and highlights some strengths of such an approach. It is hoped that reporting our approach and experiences is useful for the broader health and research community considering large-scale qualitative research.
Automatic Arabic Translation of English Educational Content Online using Neural Machine Translation: the Case of Khan Academy

Massive Open Online Courses (MOOCs) offer valuable and high quality learningopportunities and educational content in several disciplines to many students, to a large extentregardless of their background, location, and personal circumstances. However, language representsa major barrier for them, keeping non-native English speakers from benefiting from these onlineeducational resources, since online content most available is in English. Given there are over 300schools in Qatar covering all topics in Arabic, in order to make online educational resources moreavailable to students in them, we designed and implemented an automatic machine translationsolution based on deep learning techniques. It aims to make high-quality Arabic translations ofsubtitles available in English. We focused on the case of Khan Academy which provides apersonalized learning experience that is mainly focused on videos. These videos have subtitles thatare generally generated by volunteers for different languages. Our system covers several subjectsranging from Physics and Mathematics to Programming and Arts and Humanities, with a focus onhigh school level students. Our system was trained using a high-quality parallel corpus from theeducation domain developed by the Qatar Computing Research Institute (QCRI). Furthermore, thesystem underwent intrinsic evaluation by comparing its output to a high-quality referencetranslation, as well as extrinsic evaluation in a pilot study, where we aimed at testing the quality ofthe system’s output in schools to evaluate its contribution to student understanding.
RETRACTED ARTICLE: Effect of relative humidity and wind on the human sneezing to prevent virus transmission: A numerical approach

We, the Editor and Publisher of Aerosol Science and Technology, have retracted the following article: M. H. H. Ishak, Farzad Ismail, Wei Shyang Chang & Mohd Sharizal Abdul Aziz, Effect of relative humidity and wind on the human sneezing to prevent virus transmission: A numerical approach, Aerosol Science and Technology, 2021, DOI: 10.1080/02786826.2021. 1990848 The article is being retracted due to a high level of overlap and similarity with the following manuscript: Yu Feng, Thierry Marchal, Ted Sperry, Hang Yi, Influence of wind and relative humidity on the social distancing effectiveness to prevent COVID-19 airborne transmission: A numerical study, Journal of Aerosol Science, Volume 147, 2020, 105585, DOI: 10.1016/j.jaerosci. 2020.105585. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.
Methodology to Assess Sustainable Mobility in LATAM Cities

As the first step toward implementing strategies to improve mobility in urban centers, governmental authorities must assess their present situation in order to identify the most effective actions that should be included in their short and long-term plans. However, there is not a well-established methodology to carry out such an assessment. The already existing ones are subjective, incomplete, costly, and hard to implement, especially for the case of Latin American (LATAM) countries. This paper proposes a comprehensive methodology to carry out this assessment. It uses recent advances in information technologies and includes the use of web map services, telematics data, and low-cost vehicle emission tests. As an example of application, a mobility assessment was carried out for Saltillo, a medium-sized city in northeastern Mexico, which is considered a typical city in LATAM countries. Results indicate that this methodology can be replicated at a low incremental cost and that it leads towards the identification of the most sustainable (economic, environmental, and social) actions that should be implemented in these cities considering their local circumstances.
Shape-Coding and Length-Coding as a Measure to Reduce the Probability of Selection Errors During the Control of Industrial Equipment

OCCUPATIONAL APPLICATIONS Shape-coding and length-coding of control levers may have limited benefits for the prevention of selection errors during operation of roof-bolting machines and other industrial equipment. Any benefits of arbitrary shape-coding or length-coding for reducing selection errors are likely to be restricted to situations in which the arrangement of controls in relation to the participant is subsequently altered in some way, such as the operator moving from one machine to another with a different control layout. If shape-coding is employed, measures should be taken to ensure that the relationship between shape and function remains consistent across similar equipment and that the relationship between shape and function cannot be altered in error during maintenance. TECHNICAL ABSTRACT Rationale: Underground coal mining is one of the most hazardous industrial environments, and roof-bolting machine operators are the most at-risk occupation in underground coal mining. Many examples of industrial equipment, including bolting machines used in underground coal mines, are operated via a bank of levers that control different machine functions and movements. Errors in the use of these controls are a cause of serious injuries. Purpose: A recent design guideline for underground bolting equipment has specified the use of arbitrary shape-coding for principal equipment functions with the aim of reducing injuries caused by operators inadvertently operating the wrong lever (a selection error). Three experiments were conducted to provide further insight to the use of control-coding. Methods: Sixty-four individuals participated in three experiments. Each participant operated a physical simulation of a single-boom roof-bolter machine via five levers in either shape-coded, length-coded, or identical handle conditions. In two experiments, the location of the controls was changed half-way through the experiment. Selection error rate data were collected. Results: When operators are not under time pressure, their attention is not divided, and they are able to view the controls they are manipulating, any benefits of arbitrary shape-coding or length-coding for reducing selection errors are likely to be restricted to situations in which the arrangement of controls in relation to the participant is subsequently altered. Conclusions: If shape-coding is employed, measures should be taken to ensure that the relationship between shape and function remains consistent and that maintenance errors, such as reversing handle shapes, are prevented.
The dot on the i : reflections of a postgraduate student and repository manager on the ETD process at the University of Pretoria

This paper shares the personal reflections of a postgraduate student and a repository manager on the life cycle of an electronic thesis and dissertation at the University of Pretoria in South Africa. The postgraduate student will reflect on her involvement with UPeTD, the University of Pretoria’s electronic theses and dissertations (ETD) repository – at first to obtain electronic information during her studies, but later in becoming a knowledge creator for other students as well. The life cycle of the dissertation and the thesis for the postgraduate student will be discussed as well as the other benefits as a professional, of having her research available in electronic format in the repository. The repository manager will discuss the life cycle of the thesis and dissertation at this institution from a manager’s perspective for the past decade. This process involves the Postgraduate officers of the nine faculties and although students may self-archive their ETDs, the manager mainly focuses on mediated submission by two library staff members. The availability of a thesis or a dissertation in a repository is only the dot on the i – it entails an intricate work process for the postgraduate student and repository manager, but they both reap the benefits in the end. The manager will also touch on the future developments for the UPeTD repository and reflect on the envisioned changes to the workflow processes.
Quality of Caregiver–child Interactions in Early Child Care Centers in Bangladesh: Measurement and Training

ABSTRACT The current study assessed (1) the importance of six caregiver interactions skills (sensitive responsiveness, respect for autonomy, structuring and limit setting, verbal communication, developmental stimulation, and fostering positive peer interactions) as rated by several stakeholders, (2) the quality of caregiver interactive skills, and (3) the effectiveness of a training program in early child care centers (children 0- to 6-year-olds) in Bangladesh. Using a quasi-experimental study design, 20 caregivers were allocated to the experimental condition (receiving a training) and 20 caregivers to the control condition (no training). Research Findings: Results showed that the importance of the six caregiver interactive skills was acknowledged by parents, managers/factory owners, and caregivers. Caregivers scored on average in the inadequate range for five out of the six CIP skills (except structuring and limit setting). Using a newly developed training program, quality of caregiver interactive skills improved. Finally, caregivers’ overall training satisfaction as rated at posttest was high. The relatively low scores on caregiver interactive skills underscore that it is important to assess and monitor pedagogical quality in child care. Practice or Policy: Our findings indicate that the quality of caregiver–child interactions in the Bangladesh child care context can be strengthened by training.
Internalized Stigma in Persons With Mental Illness in Qatar: A Cross-Sectional Study

Stigma impacts persons with mental illness (PWMI), their families and network of friends, the public and health care professionals. Stigma is a major barrier for PWMI to seeking treatment, which contributes to the burden of disease, disability, and mortality. Research on stigma is relatively scant in the Middle East region and particularly in Qatar. To address stigma effectively in each culture, it is essential to study its nature in the context where the PWMI experience stigma. The purpose of this study was to assess the prevalence of internalized stigma in PWMI in Qatar. A cross-sectional study of PWMI receiving outpatient mental health services in Qatar was done. We interviewed 417 PWMI using a modified 18-item version of the short form of the Internalized Stigma of Mental Illness (ISMI) Scale. Descriptive and regression models were used to analyze the data. The Cronbach alpha for the modified 18-items ISMI was 0.87. Participants' average score on this scale was 2.07 ± 0.38 with 41 (9.8%) of them scoring more than 2.5 which is considered “high” stigma score. In multivariate logistic regression, high stigma (modified ISMI score >2.5) was significantly higher among PWMI with no formal education and among those who reported lower levels of social support. The reported levels of internalized stigma in this vulnerable population of Qatar fall at the lower spectrum reported worldwide. An anti-stigma education program designed for the context of Qatar emphasizing on education and support for PWMI may be conducive to creating an all-inclusive society.
Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges

This work investigates the strongest optical emissions associated with long laboratory sparks (at the wavelengths of 337 and 777 nm) with the aim to understand similar emissions in lightning. The processes of the long‐spark formation are studied by using optical measurements, current signatures, and short‐time exposure images. Blue optical emissions (337 nm) are associated with streamer development and negative leader stepping, and the optical pulses have good correlation with current pulses. Red optical emissions (777 nm) are mainly associated with stable leader propagation, when this irradiance is predominant over the blue one. The results indicate that formations of stems from positive leaders also produce emissions at 777 nm. This work aims to support satellite‐based measurements that perform optical measurements in the same wavelength ranges.
Towards personalisation of the driver environment: Investigating responses to instrument cluster design

Recent trends in the automotive and the Information Technology (IT) industries lead to growing consumer expectations for aesthetic and personalised design of products. The merging of these trends is more likely to lead to considerable changes in the driver environment. Two experiments were conducted in which we examined people's aesthetic response to the design of Instrument Clusters (ICs): the first used images of existing clusters, and the second used a set of conceptual ICs that were designed to enable the experimental control of the ICs' form and colour. The results indicate strong correlations between preferences, symbolism and attractiveness. There was no apparent trade-off between attractiveness and readability, although attractiveness was given more weight than readability in determining people's preferences. Typicality and novelty of the design were negatively correlated, and both contributed to explaining variance in aesthetic evaluations. Finally, diversity in design preferences suggests the benefits of personalised driving environment.