bluuebunny/crossref_metadata_2025_split huggingface dataset:
Beginning farmers' entry and exit: evidence from county level data
Authors: Hartarska Valentina , Nadolnyak Denis , Sehrawat Nisha 
Published: January 2022

PurposeThis paper identifies factors that affect entry and exit of beginning, young and women farmers and ranchers.Design/methodology/approachThe empirical framework is fixed effects regression analysis that uses county level data to evaluate how barriers to entry, access to and use of credit, local economic environment, and climate affect entry and exit of Beginning Farmers and Ranchers (BFRs). The dataset is assembled from several sources matching the Census of Agriculture years for the period of 1997–2017.FindingsResults show that new farmers are more likely to enter in counties with more and smaller farms and with lower farm productivity, indicating that BFRs have the potential to improve the overall productivity in such counties if able to grow and succeed. The results also indicate that the high capital intensity nature of farming is an effective barrier to entry. BFRs are more likely to do better in counties where agriculture is more important to the economy and with more off-farm work opportunities. The net entry is positively associated with higher input/output price index and the use of insurance but is unaffected by government payments and farm and off-farm income. The authors observe substitutability between farming and alternative self-employment for more entrepreneurial young people. Net entry increases with availability of non-real-estate loans but decreases with real estate credit. Thus, for BFRs to acquire the assets needed to reach optimal scale, access to credit remains essential.Originality/valueThe authors are not aware of other work that estimates how barriers to entry and other economic factors including access to credit affect entry and exit of BFRs of various ages and young and women farmers using the Census of Agriculture data up to 2017.
The relationship between needs, motivations and information sharing behaviors on social media: focus on the self-connection and social connection
Authors: Kim Miyea , Jun Mina , Han Jeongsoo 
Published: January 2022

PurposeThe purpose of this study is to investigate the factors that influence the information sharing behavior of individuals on social media. Furthermore, the study analyzes the effect that individuals’ self-connection to social media has on information sharing through self-efficacy and the effect of social-connection on information sharing through empathy.Design/methodology/approachA survey questionnaire was developed and distributed to social media users from general participants in the Republic of Korea. A total of 824 valid responses were obtained. Hypotheses were tested using structural equation modeling and applying SmartPLS 3.0.FindingsThe result indicated that individuals are motivated to share information through self-connection and social connection. Furthermore, the mediation analysis revealed that the effect of self-connection on information sharing in social media is mediated by self-efficacy. Also, social connection will increase information sharing not only directly but also indirectly through its positive effect on empathy.Originality/valueThe authors focused on the basic needs of humans and tried to reveal the relationship between human needs and motivational beliefs, which are self-efficacy and empathy, and information sharing behavior on social media. Through the individual's fundamental needs that social media can satisfy, individuals will gain positive psychological benefits through using social media. This study considered what psychological benefits social media can provide.
The role of expert judgments in wine quality assessment: the mismatch between chemical, sensorial and extrinsic cues
Authors: Parga-Dans Eva , Alonso González Pablo , Otero-Enríquez Raimundo 
Published: January 2022

Purpose The complexity in determining the quality of a credence good like wine increases due to the lack of mandatory ingredient labeling. This has generated a significant information asymmetry in the wine market, leading consumers to delegate their purchase decisions to expert rankings and wine guides. This paper explores whether expert assessments reduce the information asymmetry caused by the absence of ingredient labeling in the wine market.Design/methodology/approach By employing analysis of variance (ANOVA) in a sample of 304 wines included in the Wine Guide of the Spanish Consumers Organization (OCU), this paper assesses the extent to which expert assessments based on sensory evaluations converge with the objective cues provided by laboratory analysis in wine quality evaluations.Findings Results reveal a mismatch between expert assessments and laboratory analyses. Chemical aspects such as SO2 levels or volatile acidity, sensorial factors such as intensity and persistence, and extrinsic variables such as the region of origin or wine type play an important role in the quality ranking of wines.Originality/value These findings call for the inclusion of objective intrinsic cues in expert sensory assessments to provide consumers reliable information about wines and to resolve the apparent dissonances in wine quality assessments.
Moderating role of Shariah committee quality on relationship between board of directors effectiveness and the performance of Malaysian Takaful
Authors: Eldaia Monther , Hanefah Mustafa , Marzuki Ainulashikin 
Published: January 2022

Purpose
The purpose of this study is to examine the effect of Board of Directors Effectiveness (BODE) on the performance of Malaysian Takaful companies licensed by the Central Bank of Malaysia. In addition, the study investigates the moderating effect of Shariah Committee Quality (SCQ) on the relationship between BODE and companies’ performance.

Design/methodology/approach
This study uses a sample of 11 Malaysian Takaful companies during the period of 2010-2017. While BDE and SCQ are measured using indices, performance is proxied using ROA and ROE. A panel fixed effect regression analysis is used to test the impact of the BDE on the financial performance of Malaysian Takaful companies and the moderator role of SCQ.

Findings
The main finding of this study shows a positive association between BDE and performance. More specifically, boards with a high presence of independent, Muslim and female directors positively contribute to the performance of Malaysian Takaful companies. Another interesting finding is related to the positive moderating effect of SCQ on the relationship between BDE and performance. This result indicates that a high level of SCQ combined with a high level of board effectiveness improve performance.

Practical implications
The finding is of great importance to stakeholders and policymakers to improve their board effectiveness and the quality of the Shariah committee to reduce agency costs and to improve the performance of Malaysian Takaful companies.

Originality/value
This study adds to the prior literature by investigating for the first time the relationship between BDE and performance and the interaction effect of SCQ on the performance of Malaysian Takaful companies.
Pulse density modulation control-based multi-load handling three leg inverter for cooking applications
Authors: Vishnuram Pradeep , Gunabalan Ramachandiran 
Published: January 2022

Purpose
Induction heating applications aided by power electronic control have become very attractive in the recent past. For cooking applications, power electronics circuits are very suitable to feed power to multi loads with an appropriate control technique. The purpose of this paper is to develop a three leg inverter to feed power to three loads simultaneously and independently.

Design/methodology/approach
Pulse density modulation control technique is used to control the output power independently with constant switching frequency.

Findings
Multi-load handling converter with independent power control is achieved with reduced number of switching devices (two switches/per load) with simple control strategy.

Originality/value
The proposed system is simulated in MATLAB/Simulink, and the thermal analysis is carried out in COMSOL multi-physics software. The hardware realisation is performed for a 1 kW prototype with 20 kHz switching frequency and 10 kHz pulse density modulation frequency. PIC16F877A microcontroller is used to validate the experimental results for various values of control signals (DPDM). The simulation and experimental results are in good agreement and validates the developed system.
Faculty perceptions of information literacy skills: an investigation at the Florence University Campus of Social Sciences
Authors: Giangrande Rosaria , Cassigoli Alessandra , Giusti Eleonora 
Published: January 2022

Purpose
The Florence University Social Science Library has for some time been engaged in courses for information literacy (IL), but so far, there has been a lack of collaboration with teachers. This study aims to investigate teachers’ perception of students’ IL skills.

Design/methodology/approach
The qualitative investigation was based on semi-structured interviews with 24 faculty members of the Florence University Social Sciences campus.

Findings
Knowledge of the IL frameworks is not widespread among the teachers of the campus, but following the discussion, most of the interviewees came to acknowledge its certain validity. The teachers tend to attribute an insufficient level of information skills to the bachelor’s degree students, a good level to master’s degree and a more positive level to the postgraduates. They express appreciation of the training activity of the library, but they, nevertheless, still tend to consider librarians, as their more traditional role would suggest, only as bibliographic research experts. No one seemed to believe librarians possess those training competencies they would need to get involved in teaching curricula. The recognition of the work that has been accomplished up to now represents foundations for an increasingly necessary partnership. There is an awareness, however, that a suitable strategy which requires determination and initiative will be difficult to implement.

Originality/value
This study represents one of the few contributions on the perception of IL skills by faculty members in Italian universities.
Heat transfer within linear Fresnel unit using parabolic reflector
Authors: Ebrahimpour Z. , Farshad Seyyed Ali , Sheikholeslami M. 
Published: January 2022

Purpose
This paper scrutinizes exergy loss and hydrothermal analysis of Linear Fresnel Reflector (LFR) unit by means of FLUENT. Several mirrors were used to guide the solar radiation inside the receiver, which has parabolic shape. Radiation model was used to simulate radiation mode.

Design/methodology/approach
Heat losses from receiver should be minimized to reach the optimized design. Outputs were summarized as contours of incident radiation, isotherm and streamline. Outputs were classified in terms of contours and plots to depict the influence of temperature of hot wall, wind velocity and configurations on performance of Linear Fresnel Reflector (LFR) based on thermal and exergy treatment. Four arrangements for LFR units are considered and all of them have same height.

Findings
Greatest Nu and Ex can be obtained for case D due to the highest heat loss from hot wall. Share of radiative heat flux relative to total heat flux is about 94% for case D. In case D when Tr = 0.388, As hext rises from 5 to 20, Nutotal enhances about 11.42% when Tr = 0.388. By selecting case D instead of case A, Ex rises about 16.14% for lowest Tr. Nutotal and Ex of case D augment by 3.65 and 6.23 times with rise of Tr when hext = 5. To evaluate the thermal performance (ηth) of system, absorber pipe was inserted below the parabolic reflector and 12 mirrors were used above the ground. The outputs revealed that ηth decreases about 14.31% and 2.54% with augment of Tin and Q if other factors are minimum.

Originality value
This paper scrutinizes exergy loss and hydrothermal analysis of LFR unit by means of finite volume method. Several mirror used to guide the solar radiation inside the receiver, which has parabolic shape. DO model was used to simulate radiation mode. Heat losses from receiver should be minimized to reach the optimized design. Outputs were summarized as contours of incident radiation, isotherm and streamline.
Predicting the airborne microbial transmission via human breath particles using a gated recurrent units neural network
Authors: Tamaddon Jahromi Hamid Reza , Sazonov Igor , Jones Jason , Coccarelli Alberto , Rolland Samuel , Chakshu Neeraj Kavan , Thomas Hywel , Nithiarasu Perumal 
Published: January 2022

PurposeThe purpose of this paper is to devise a tool based on computational fluid dynamics (CFD) and machine learning (ML), for the assessment of potential airborne microbial transmission in enclosed spaces. A gated recurrent units neural network (GRU-NN) is presented to learn and predict the behaviour of droplets expelled through breaths via particle tracking data sets.Design/methodology/approachA computational methodology is used for investigating how infectious particles that originated in one location are transported by air and spread throughout a room. High-fidelity prediction of indoor airflow is obtained by means of an in-house parallel CFD solver, which uses a one equation Spalart–Allmaras turbulence model. Several flow scenarios are considered by varying different ventilation conditions and source locations. The CFD model is used for computing the trajectories of the particles emitted by human breath. The numerical results are used for the ML training.FindingsIn this work, it is shown that the developed ML model, based on the GRU-NN, can accurately predict the airborne particle movement across an indoor environment for different vent operation conditions and source locations. The numerical results in this paper prove that the presented methodology is able to provide accurate predictions of the time evolution of particle distribution at different locations of the enclosed space.Originality/valueThis study paves the way for the development of efficient and reliable tools for predicting virus airborne movement under different ventilation conditions and different human positions within an indoor environment, potentially leading to the new design. A parametric study is carried out to evaluate the impact of system settings on time variation particles emitted by human breath within the space considered.
Ecuadorian and Uruguayan teachers' perceptions and experiences of teaching online during COVID
Authors: Burgin Ximena D. , Coli Coli Sheila , Daniel Mayra C. 
Published: January 2022

PurposeThe COVID-19 pandemic is a unique event that forced K-12 schools to rethink the delivery of instruction to protect the well-being of school system stakeholders. Teachers, school administrators and parents had to adapt to and embrace new ways of teaching and learning by utilizing available technology. The purpose of this study is to examine the challenges encountered by in-service teachers when moving from face-to-face to online teaching.Design/methodology/approachThis study utilized a qualitative phenomenological research methodology to examine Ecuadorian and Uruguayan teachers' perceptions and experiences transitioning from face-to-face to online teaching during the COVID-19 pandemic. This comparative study used convenience sampling to include 12 K-12 teachers from Ecuador and Uruguay.FindingsThe results of this study produced two themes that evidenced the demands placed on educators. The first theme was job demands, relating to teachers' perceptions about workload, preparation time and curriculum issues. The second theme related to available support provided by the school administrators and technology issues faced by teachers and students. Even though the teachers demonstrated adaptability for educating students during the pandemic, the experiences from both countries should be considered by teacher training programs and in post-graduate professional development.Originality/valueThis article examined how COVID-19 affected teachers in Uruguay and Ecuador. Data analysis documented the challenges encountered by teachers transitioning to online learning during the pandemic. The findings inform a larger audience about the needs of teachers working online.
Comfortable pressure feeling and clothing pressure on abdomen
Authors: Mitsuno Tamaki , Yanagisawa Ayaka Kai 
Published: January 2022

PurposeThe present study obtained the topography of perceptible (a perfect-fit feeling) clothing pressures from the chest to groin, when a stretching material provided hoop tension to the body surface of participants. Furthermore, the allowable pressure level was examined for the abdomen, which is pressed by underclothes on a daily basis.Design/methodology/approachParticipants were nine women aged 21.3 ± 1.2 years. Each participant's perception of pressure while wearing the experimental band was obtained in a questionnaire using a visual analog scale. Clothing pressure was measured employing a hydrostatic pressure-balancing method as participants adjusted the band length themselves to achieve two conditions: a perfect-fit and tight-fit on the abdomen.FindingsThe range of comfortable clothing pressure tightening provided by a 2.5 cm-wide elastic band on the abdomen was 0–5.6 hPa for under the bust, waist and groin, and 4.4–9.3 hPa for the chest, lower waist and hips. A nerve plexus of the autonomic nervous system and arteries are distributed over the body surface of the former body parts, which were thus sensitive to tightening around the abdomen.Originality/valueThe topography of perceptible clothing pressure was obtained when stretching material provided hoop tension to the body surface of the participant. The results of a participant questionnaire agreed with clothing pressure obtained using a hydrostatic pressure-balancing method that has a short-time constant and sensitive resolution. Furthermore, allowable pressure levels were proposed.
How to motivate students to do a course project in design of experiments course from a web-based virtual learning material?
Authors: Saikaew Charnnarong 
Published: January 2022

Purpose
The purpose of this study is to develop a practical method for training students how to conduct statistical analysis and do a course project in design of experiments (DOEs) course through the Web-based virtual catapult simulation.

Design/methodology/approach
A step-by-step sequential DOE process for investigating the effects of controllable factors on quality characteristic responses was presented as a guideline for conducting a DOE course project. Each team was assigned to create an innovative teaching material and work on the term report by following the recommended guidelines for designing experiments through the Web-based virtual catapult simulation. Hypothesis was defined to test whether doing a course project based on this approach would impact students’ learning outcome.

Findings
The Web-based virtual material was an alternative technique for interactive teaching that could improve students’ understanding and achievement in DOE course projects. There was a significant difference in student learning and understanding before and after doing on the course project through the Web-based virtual catapult simulation. The students had improved communication and teamwork skills after following the recommended procedure for practicing DOEs.

Practical implications
Most students could effectively conduct designing experiments, carry out designed experiments, analyze data and gain valuable teamwork experience. After learning the DOE approach based on the catapult simulation, they enjoyed working on their course projects deploying to the innovative toys and other real-life situations with real measurements.

Originality/value
The use of Web-based virtual material, including catapult simulation, was an alternative technique for interactive DOE teaching to improve the students’ understanding and achievement in DOE course projects.
Design of a robot for inspection and diagnostic operations of rail track facilities
Authors: Daniyan Ilesanmi , Mpofu Khumbulani , Nwankwo Samuel 
Published: January 2022

PurposeThe need to examine the integrity of infrastructure in the rail industry in order to improve its reliability and reduce the chances of breakdown due to defects has brought about development of an inspection and diagnostic robot.Design/methodology/approachIn this study, an inspection robot was designed for detecting crack, corrosion, missing clips and wear on rail track facilities. The robot is designed to use infrared and ultrasonic sensors for obstacles avoidance and crack detection, two 3D-profilometer for wear detection as well as cameras with high resolution to capture real time images and colour sensors for corrosion detection. The robot is also designed with cameras placed in front of it with colour sensors at each side to assist in the detection of corrosion in the rail track. The image processing capability of the robot will permit the analysis of the type and depth of the crack and corrosion captured in the track. The computer aided design and modeling of the robot was carried out using the Solidworks software version 2018 while the simulation of the proposed system was carried out in the MATLAB 2020b environment.FindingsThe results obtained present three frameworks for wear, corrosion and missing clips as well as crack detection. In addition, the design data for the development of the integrated robotic system is also presented in the work. The confusion matrix resulting from the simulation of the proposed system indicates significant sensitivity and accuracy of the system to the presence and detection of fault respectively. Hence, the work provides a design framework for detecting and analysing the presence of defects on the rail track.Practical implicationsThe development and the implementation of the designed robot will bring about a more proactive way to monitor rail track conditions and detect rail track defects so that effort can be geared towards its restoration before it becomes a major problem thus increasing the rail network capacity and availability.Originality/valueThe novelty of this work is based on the fact that the system is designed to work autonomously to avoid obstacles and check for cracks, missing clips, wear and corrosion in the rail tracks with a system of integrated and coordinated components.