Miracle-dz/UniFAR-FTUs huggingface dataset:
Wall-modeled large-eddy simulation of a trailing-edge serration–finlet configuration

This paper proposes a novel trailing-edge treatment to reduce airfoil self-noise: a serration–finlet configuration. According to the current literature, while serrations are good at reducing low-frequency noise, finlets are able to significantly reduce noise at high frequencies. Therefore, it is possible that their combination can reduce noise at all frequencies. Wall-modeled large-eddy simulations are performed to compare a serration–finlet configuration to a clean airfoil, an airfoil with serrations only, and an airfoil with finlets only. It is shown that the serration–finlet configuration reduces the far-field overall sound pressure level by 20.2 dB and has an improved aerodynamic performance. The detailed flow physics of noise reduction with the serration–finlet configuration is also investigated. It is found that the serration–finlet configuration remarkably reduces far-field noise by improving the hydrodynamic field at source locations. In particular, near-wall velocity and turbulence kinetic energy are reduced. Large coherent eddies are also broken into smaller turbulent structures. The interactions between serrations and finlets are proven to be beneficial from both aerodynamic and aeroacoustic perspectives. Overall, the current research provides a low-noise solution for wind turbines and the future’s ultra-quiet aircraft.
Conducting Channel Formation in Poly(3-hexylthiophene) Field Effect Transistors: Bulk to Interface

The most critical step in fabricating solution-processed organic field effect transistors (OFETs) is the solidification process of the polymer solution at the polymer/gate dielectric interface, where the charge transport properties of the resultant thin film are determined by the structural organization of the polymer molecules. In this paper, the conducting channel formation process in poly(3-hexylthiophene) (P3HT) FETs is described via in situ sheet conductance measurements using four-contact geometry field effect devices. In the in situ measurements, the onset of the drain current was achieved by percolation between P3HT chains resulting from the increase in P3HT concentration in solution during solvent evaporation. The P3HT channel sheet conductance and P3HT/Au contact resistance extracted from the gated four-contact measurements varied during channel formation. After percolation, the four-contact mobility increased up to a peak value of 0.17 cm2/(V s) after which it continuously decreased. This decre.
The Influence of Facial Dominance on Perceptions of Risk-Taking Preferences

Abstract Higher perceived dominance leads to greater perceived risk-taking willingness. This, both for people differing in facial dominance (Study 1) and people whose dominance was digitally manipulated (Study 2). Yet, the effect of facial dominance varied to some degree across domains. Gender differences also emerged and these fitted stereotypes. Women were judged as less likely to take financial or recreational risks but more likely (Study 1) or as likely as men (Study 2) to take social risks. The assumption that perceived optimism and/or perceived competence mediate the effect of facial dominance on perceived risk-preferences was not supported. Overall, this research exemplifies the importance of considering the way cues such as dominance may have a differential effect in specific contexts. Our findings also challange the idea that assessment of risk-taking tendencies based on facial dominance serves the goal of determining male quality.
Effects of corona-virus outbreak on micro and small scale enterprise operation in southwest Ethiopia

Goal: This examination is expected to survey the effect of COVID-19 for micro and small scale enterprise activity in southwest Ethiopia. Design/methodology/approach: The current study used the graphic exploration plan which includes 346 micro and small-scale enterprises. Enterprise proprietors, government authorities, and specialists were invited to answer self-administered questionnaires and information was also acquired from archive audit of different reports and exploration results zeroing. Result: The analysis reveals that the outbreak of the pandemic had a negative impact on production, employment, profit, seals level, operation costs and cost of raw material by 59%, 35%, 78%, 72%, 49%, 10%, 10%, 31% and 59% respectively. The virus also has a 10% 9% and 8% impact on local government tax revenue collected from the urban, services, and construction sectors, respectively. The virus has no impact on the manufacturing industry but has a positive effect on the trading sector; finally, the outbreak had a significant impact on the enterprises supply chain with a rate of 48%. Limitations of the investigation: The examination have the accompanying constraints first; the consequences of this investigation are not summed up to different segments other than Micro and small scale enterprise. Second the investigation utilized qualitative data that can’t fill the advantage of quantitative data. Thus, there must be further examination on the effect of COVID 19 in various benefit arranged and non- benefit arranged associations and even in the micro and small scale enterprise by joining other comports of operation that have not been contacted in the investigation. Practical implication: The result of this study has some important implications for micro and small scale enterprise owners and the government. In this way, the examination gives insight to micro and small scale enterprise to take activities like moving their activity to related business and creation of right now requested defensive materials. Moreover, the investigation gives insight to the government and different partners on how COVID 19 affects both the micro and small scale enterprise as well the public tax. Originality/ value: This study is the first of its kind up to authors’ knowledge, and the data was collected from the most authentic sources.
Online Classrooms During COVID-19 Pandemic: A Survey of Industrial Engineering Instructors in Indonesia

Objectives: The purpose of this descriptive study was to understand the instructional methods, quality, and challenges in online instruction as industrial engineering instructors in Indonesia transitioned from face-to-face to fully online instruction during the COVID-19 pandemic. Methods: Instructors were invited to complete a survey that requested perceptions on methods, perceived quality, and challenges regarding course delivery and assessment in their online classrooms. Results: Despite the fact that more than half of the participants (59%) had some training, the majority (63%) reported that they had no experience in conducting online classrooms. Furthermore, more than 50% of the participants described the quality of the course delivery and assessment as the same or inferior to traditional classrooms. Most participants reported having an issue with measuring student involvement or gaining class interaction. Regarding the course assessment, the vast majority of the participants reported concerns about integrity issues associated with assignments and exams. Implications for Practice and Conclusion: Since instructors reported intention to continue online instruction post-pandemic, industrial engineering programs can begin strengthening the online learning infrastructure and providing some training to the instructors to minimize the discrepancies between face-to-face and online instruction.
Biomimetic Transamination – a Metal-Free Alternative to the Reductive Amination. Application for Generalized Preparation of Fluorine-Containing Amines and Amino Acids

The biomimetic transamination of fluorinated carbonyl compounds, represent the most methodologically concise and general- ized approach to the family of fluorine-containing amines and amino acids. Such amino compounds are of critical importance in the me- dicinal, bioorganic, biochemistry research and pharmaceutical industry. This review summarizes all of the synthetically and methodol- ogically important achievements in the field published to date. The review consists of two major parts summarizing the literature methods on biomimetic transamination of fluorine-free carbonyl compounds and the authors' own results on the application of this bio-inspired approach to fluorinated derivatives. Discussion on each particular method includes synthetic opportunities, limitations, practicality and efficiency of the synthetic procedures.
Knowledge and practice of Nurses’ about post operated pain management at neurosurgery department in Tertiary Care Hospital, Lahore

To evaluate knowledge, and practice knowledge, and practice about post operated pain management at Punjab institute of neurosciences Lahore. Descriptive cross-sectional design having convenient random sampling of 100 nurses. An adopted questionnaire from previous study was used to collect data. Descriptive statistics used to analyze percentage, Frequency, and standard deviation for all variables. The Likert scale was used for questions measurement. Majority nurses had high knowledge. (Level of knowledge was divided into high (80-100%), moderate and Low (79-70%) and below mark (70%). While had moderate practice. (Good Practice was (80-100%), Moderate practice was (70–79%) while low level of practice was below (70%). 100% of participants were female, and majority were registered nurses having diploma in nursing (69%) with less than five years’ experience. Current study revealed that nurses had high level of knowledge about post operated pain management at neurosurgery whereas level of practice was moderate. Hospital administration should prominence on conduction, observe, and appraised skills requirements, and extension of professional advancements. These innovative skills will improve quality in neurosurgery pain management.
Assessment of Recent Changes in Dust over South Asia Using RegCM4 Regional Climate Model

Pre-monsoon dust aerosols over Indian regions are closely linked to the monsoon dynamics and Indian summer monsoon rainfall. Past observational studies have shown a decline in dust loading over the Indian landmass potentially caused by changing rainfall patterns over the desert regions. Such changes are expected to have far reaching impact on regional energy balance and monsoon rainfall. Using a regional climate-chemistry model, RegCM4.5 with an updated land module, we have simulated the long-term (2001-2015) changes in dust over the arid and semi-arid dust source regions of the North-Western part of the sub-continent. It is found that the area-averaged dust aerosol optical depth (AOD) over the arid and semi-arid desert regions has declined by 17% since the start of this millennium. The rainfall over these regions exhibits a positive trend of 0.1 mm day-1year-1 and a net increase of > 50%. The wet deposition is found to be dominant and ~5 fold larger in magnitude over dry deposition and exhibits total changes of ~ 79 % and 48% in the trends in atmospheric dust. As a response, significant change in the surface (11%), top of the atmosphere radiative forcing (7%), and widespread atmospheric cooling are observed in short wave domain of radiation spectrum, over the Northern part of the Indian landmass. Such quantification and long term change studies are necessary for understanding the regional climate change and the water cycle.
Building Energy Performance Certificate—A Relevant Indicator of Actual Energy Consumption and Savings?

A building energy performance gap can be illustrated as the difference between the theoretical (methodologically defined) and the actual energy consumption. In EU countries, Energy Performance Certificates are issued when buildings are constructed, sold, or leased. This information is the first step in order to evaluate the energy performance of the building stock. In Serbia, when issuing an energy certificate, the adopted national methodology recognizes only energy consumption for heating. The main purpose of this paper is to evaluate the energy gap and estimate the relevance of an Energy Performance Certificate to meet the national energy efficiency or carbon target. An Energy Performance Certificate determines the theoretical residential and commercial building energy efficiency or its “design intent”. This research stresses the necessity of measuring and achieving reductions in actual energy consumption through system regulation and consumers’ self-awareness in buildings. The research compares the performance of the building stock (135) that is connected to the District Heating System (DHS), with its own integrated heat meter, to Individual Gas Boiler (IGB) systems (18), in the city of Novi Sad, Serbia, built after 2014. For the purpose of comparing energy consumption, 16 buildings were selected that are very similar in terms of design, operation, and location. The data used are derived from metered consumption data, official evidence of city service companies, and Energy Performance Certificates of the considered buildings. We have determined that IGB systems have a much wider specific annual performance gap (11.19–101 kWh/m2a) than the buildings in the DHS (3.16–18.58 kWh/m2a).
A Case Study on Students’ Application of Chemical Concepts and Use of Arguments in Teaching on the Sustainability-Oriented Chemistry Issue of Pesticides Use Under Inclusion of Different Scientific Worldviews

The aim of this case study was to explore students’ application of chemical concepts and their use of arguments in an educational research framework to incorporate and reconstruct indigenous science in chemistry education. This framework fosters education for sustainable development (ESD) in chemistry learning by integrating intercultural and multi-perspective scientific worldviews borrowed from indigenous and Western modern science. A socio-scientific issues-based, sustainability-oriented pedagogical approach was employed in a chemistry teaching intervention. Worksheet tasks, videos and an article were used in an inquiry-based teaching module in secondary (N=40) and tertiary (N=73) Indonesian chemistry education classes. Student responses to the worksheet questions were analyzed using qualitative content analysis. The results indicate that university students showed a better understanding of the chemical concepts compared to upper secondary school students. In terms of argumentation, both groups of students were able to broaden their spectrum of arguments, especially in the area of ethical arguments.
University Students' Attitudes Towards Gender Roles Predicting Their Value Orientation

An individual's gender determines his position in the society he lives in. According to the social role theory, the differences between the behaviours of women and men can be explained by gender stereotypes and social roles. Value and attitudes go hand in hand. It is noteworthy that the individual has gained or possessed in the situation that causes these attitudes to occur. Therefore, in this research, the goal is to examine to what degree the attitudes of university students towards gender roles predict their value orientation. The participants are comprised 252 undergraduate students in a state university in Turkey and a private university in the Turkish Republic of Northern Cyprus during the academic year 2020-2021. Using the required sampling process, which is one of the non-random sampling techniques, the test sample was calculated. The data of the study were collected in the Social "Gender Roles Attitude" Scale and the "Portrait Value Scale". In the data analysis of the research, in variables that do not show a normal distribution, t-test was used and the relationship of variables with each other was analysed using Pearson's Product-Moment Correlation. Later, based on this relationship, multiple regression analysis was conducted to examine whether the variables predicted each other and if yes, to what extent they do so. The attitudes towards gender roles subscales and meaning orientations were shown to have a statistically positive meaningful association. It was found that the relation between the traditional gender roles sub-dimension of attitude to gender roles and meaning orientations was positively significant. The explanatory perception of the deserving preference of university students towards "traditional gender role" is very strong. Within the framework of the study findings, the related literature was addressed and necessary recommendations were made.
Web-Crawling Architecture in Accounting and Finance Research

ABSTRACT We examine the practice of web-crawling architecture through two logics: combinational logic (CL) and sequential logic (SL) and adopt a test ground on the relationship between price informativeness and corporate social responsibility (CSR) news releases among publicly listed former unicorns. Our results show that the CL approach is more optimal than the SL approach regarding time consumption, storage efficiency and data accuracy, which suggest that CSR media exposures have substantial influence on price informativeness. Both positive (optimistic) and negative (pessimistic)-toned CSR information increases price informativeness. We find that the Diction wordlist displays higher classification accuracy when analyzing CSR news release.
TNDP: Tensor-Based Network Distance Prediction With Confidence Intervals

The knowledge of network distances, in the form of delay or latency, for example, is beneficial to a number of distributed applications. Notice that it is difficult and expensive to implement global network measurements to obtain network distance, a feasible idea is to predict unknown distances by introducing network coordinates with limited network measurements. The existing solutions always represent the unknown network distances in a rather unique number. However, research and applications indicate that the real network distances are hard to be accurately figured out and changes subtly in an interval over time with the dynamic network environments. Accordingly, this article proposes a tensor-based network distance prediction (TNDP) approach to represent network distance with confidence intervals, by exploiting the random distance tensor and distributed matrix factorization. With a small set of network measurements among the nodes selected randomly, a distance matrix tensor has been established and factorized into the product of two location matrixes with the adaptive SGD-based learning solution. By introducing the important training determinants, including weight matrix, regularization coefficient, and minibatch gradient descent with the exponential decay rates, the unknown distances among nodes can be accurately inferred in the forms of confidence intervals, with quick convergence and less overfitting. Extensive experimental simulations on a wide variety of available data sets demonstrate that TNDP is superior to other approaches in terms of accuracy for network distance prediction.
Investigating the effects of background noise and music on cognitive test performance in introverts and extraverts: A cross-cultural study

Previous research found that introverts performed worse than extraverts on cognitive tasks in the presence of noise or music in a Western sample but not in an Asian sample. This is a cross-cultural part replication of these studies using a Western (British; N = 45) and Asian (Singaporean; N = 45) sample. Participants engaged in three cognitive tests in the presence of pop songs, background noise, and in silence. It was predicted that for British participants, introverts would perform worse than extraverts on all three tasks in the presence of background sounds, and performance would be worse in the presence of background sounds than in silence, but not for the Singaporean participants. The results did not show any performance differences between the background sound conditions for any of the tests across the two samples, nor any performance differences between extraverts and introverts across the background sound conditions, with three exceptions: extraversion for the British was a significant predictor of performance on the Raven’s test in the silence condition, extraversion was a significant predictor of performance for both groups on the mental arithmetic task in the silence condition, and extraversion was a significant predictor of performance for Singaporeans on the mental arithmetic task in the music condition.
Spatio-temporal analysis of temperature projections based on representative concentration pathways for Satluj River Basin, India

Abstract A spatio-temporal analysis of representative concentration pathways (RCPs)-based projections of surface air temperatures under different combinations of global circulation models (GCMs) and RCPs for Satluj River Basin has been presented. The projections of temperature anomalies have been obtained for several meteorological stations in the basin using 16 different combinations of emission scenarios and global climate models (GCMs). For each combination, the projections of temperature anomalies have been analysed for two future time periods centred at 2030 and 2050. The results of the analysis conducted herein clearly indicate that the temperature will rise for all the future time scales with the maximum increase being projected under RCP8.5 compared to the baseline 1986–2005. However, there is large inter-model variability in the projections of temperature anomalies under different RCPs. Under RCP 8.5, the average temperature in Satluj basin is projected to rise by around 4°C by mid of the twenty-first century. The projections of temperature anomalies analysed herein could be potentially used for the evaluation of hydrological impacts of climate change in Satluj River Basin—a key basin in the Himalayan region from the view point of global warming.
The Impact of Offshore Wind Farms on Sea State Demonstrated by Airborne LiDAR Measurements

The increasing number of wind farms installed in the North Sea has an impact on the downstream wind speed. This has been hypothesized as well for sea state properties. Wave effects can be expected in particular in fetch-limited conditions with offshore wind directions. With systematic flights deploying an airborne laser scanner, these impacts are shown directly for the first time. The flights were conducted perpendicular to the main wind direction upstream and downstream of the cluster of the offshore wind parks Amrumbank West, Nordsee Ost, and Meerwind Sud/Ost. The flight legs covered the area potentially influenced by the wind parks and the undisturbed area next to the wind parks. The analysis of the spectral energy distribution shows a re-distribution of the wave energy in the downstream area with enhanced energy at smaller wavelengths. The effect is still clearly visible at a distance of 55 km. As the sea surface constitutes the link between the atmosphere and the ocean, it is very likely that wind parks modify the properties of the water column as well.
Fathers’ and mothers’ enjoyment of childcare: the role of multitasking

Using data from the latest edition of the Italian Time Use Survey (ITUS, 2013–2014), we analyse 31,309 childcare episodes to investigate the relationship betweenmultitasking (i.e., the combination of childcare with housework tasks) and parents’enjoyment of the time they spent on childcare, with a gender perspective. To this end,we rely on information from the episode enjoyment scores the respondents used toevaluate the degree of (un)pleasantness associated with the different activities theyrecorded in a daily diary. These episode enjoyment scores are a novelty in the ITUS,and provide a unique measure of the respondents’ momentary assessments of theirsubjective well-being. Our results highlight the existence of a negative relationshipbetween multitasking and parental well-being when spending time on childcare forboth mothers and fathers, regardless of the nature of the childcare activity theywere performing (i.e., routine or recreational childcare). Our findings add to priorresearch by shedding new light on the role of multitasking as a relevant contextualcharacteristic of care that affects the well-being of fathers, as well as of mothers.