bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical analysis of electrically conductive fillers of composites for aircraft lightning strike protection
Authors: Lesiuk Igor , Katunin Andrzej 
Published: July 2020

Purpose
This paper aims to present a numerical analysis and comparison of two types of conductive fillers of polymeric composites subjected to lightning strikes.

Design/methodology/approach
Two types of conductive fillers were considered in the developed numerical models of electrically conductive composites: carbon nanotubes and polyaniline. For these fillers, the representative volume elements were developed to consider distribution of the particles that ensures percolation and homogenization of the materials within the Eshelby-based semi-analytical mean-field homogenization approach. The performed numerical analyses allowed determination of effective volume fractions of conducting particles, resistivity and conductivity tensors, and finally the current density for the simulated materials subjected to lightning strike.

Findings
The obtained results allowed for comparison of electrical conductivity of two simulated materials. It was observed that besides fair results obtained in the previous studies for intrinsically conducting polymers as fillers of composites dedicated for lightning strike protection, the composites filled with carbon nanotubes reveal much better conductivity.

Practical implications
The presented simulation results can be considered as initial information for further experimental tests on electrical conductivity of such materials.

Originality/value
The originality of the paper lies in the proposed design and simulation procedures of conductive composites as well as the comparison of selected composites dedicated for lightning strike protection as the most intensively developed materials for this purpose.
Robust output feedback control of fixed-wing aircraft
Authors: Raza Abid , Malik Fahad Mumtaz , Khan Rameez , Mazhar Naveed , Ullah Hameed 
Published: July 2020

PurposeThis paper aims to devise a robust controller for the non-linear aircraft model using output feedback control topology in the presence of uncertain aerodynamic parameters.Design/methodology/approachFeedback linearization-based state feedback (SFB) controller is considered along with a robust outer loop control which is designed using Lyapunov’s second method. A high-gain observer (HGO) in accordance with the separation principle is used to implement the output feedback (OFB) control scheme. The robustness of the controller and observer is assessed by introducing uncertain aerodynamics coefficients in the dynamic model. The proposed scheme is validated using MATLAB/SIMULINK.FindingsThe efficacy of the proposed scheme is authenticated with the simulation results which show that HGO-based OFB control achieves the SFB control performance for a small value of the high-gain parameter in the presence of uncertain aerodynamic parameters.Originality/valueA HGO for the non-linear model of aircraft with uncertain parameters is a novel contribution which could be further used for the unmanned aerial vehicles autopilot, flight trajectory tracking and path following.
Assessing the credibility of Web information by university students: findings from a case study in Iran
Authors: Keshavarz Hamid 
Published: July 2020

Purpose
The purpose of this paper is to explore how university students assess the credibility of diverse information available on the Web.

Design/methodology/approach
This paper used applied study and was conducted using the survey-descriptive method. Using a randomized stratified sampling method and the Cochran sampling formula, a sample including 380 student participants was selected from Shahid Beheshti University, Tehran, Iran. Data were gathered by administrating a validated questionnaire including eight components of ethics, writing style, website appearance, website identity, professional information, accuracy, usability and interaction. Data were analyzed by software SPSS 20.0 and LISREL 8.7.

Findings
Confirmatory factor analysis using structural equation modeling indicated that the overall framework is reliable according to the goodness of fit indices for the measurement and structural models showing a high quality on measuring the variable in the context studied. Findings also showed that the components usability, interaction, accuracy, website appearance, writing style, professional information, ethics and website identity had the standard relevance.

Practical implications
Users paid more attention to semantic- and expertise-related features compared to characteristics of the source and its authority. Such preference should be taken into account by providers when producing information and students when evaluating information.

Originality/value
The framework underlying this research had the required quality incorporating a set of most important criteria for exploring Web information evaluation behavior by the students, which is also useful for future related studies.
Changing the course of IfATE: healthier higher and degree apprenticeships for regulated healthcare professionals
Authors: Lillis Finbar , Varetto Angelo 
Published: July 2020

PurposeThe purpose of this paper is to show how and why government discoursal constraints have obstructed the development of viable degree apprenticeships for regulated healthcare professionals working in England and suggests some ways these constraints can now be managed and overcome.Design/methodology/approachThe study uses an analysis of published literature, reviews of government and health professional body policies and regulations and semi-structured interviews recorded with those leading on the development of degree apprenticeships in healthcare-regulated professions.FindingsOnce created, a bureaucracy tends to look for ways to control discourse, to sustain itself and to extend its reach. In doing so, fault lines may be exposed which undermine the position of that bureaucracy, but it will continue to control discourses to maintain power over those it requires to act. There is no pedagogical need for End Point Assessment (EPA) to measure the competence of regulated healthcare professionals. The paper produces evidence to show how meeting health professional registration requirements is a sufficient metric for measuring successful degree apprenticeship outcomes.Research limitations/implicationsThis paper examined current practices relating to the registered nurse and nursing associate degree apprenticeships only. The validity of EPA for measuring occupational competence should be further investigated.Practical implicationsThe NHS and other public service organisations should use these findings to re-examine and challenge the requirements for EPA in degree apprenticeships for all regulated professions.Originality/valueUnderstanding how “centering” bureaucracies control discourse in their interests can help those in their orbit find ways to challenge and alter the course of policy.
Research Productivity Index (RPI): a new metric for measuring universities’ research productivity
Authors: Halaweh Mohanad 
Published: July 2020

Purpose
This paper aims to propose a new metric, called the Research Productivity Index (RPI), which can be used to measure universities’ research productivity and benchmark them accordingly at both national and global levels.

Design/methodology/approach
The paper used a partial-factor productivity measurement as the basis to develop RPI, which considers the ratio of total weighted publications (outputs) to the used input (affiliated researchers). To demonstrate the applicability of the RPI, data were collected from Scopus to assess the research productivity of a university in the UAE, as an example. The methodological steps (algorithm) were demonstrated using mathematical and query functions to extract the required data from the Scopus data set and then compute the RPI value.

Findings
A new effective and objective metric was developed for measuring universities’ research productivity.

Practical Implications
This paper suggests that Scopus could use RPI as a metric for measuring the research productivity of each university. RPI can be used by university administrators and government decision-makers to evaluate and rank/benchmark institutions’ research productivity. They can consequently make more effective decisions with regard to the efficient allocation of research budgets and funding.

Originality/value
This paper distinguishes between measuring research impact and research productivity. It proposes RPI for measuring the latter, whereas most existing metrics measure the former. RPI is an objective measurement, as it is calculated based on a constant period of time, three years, and takes into consideration the university size (i.e. affiliated researchers) in addition to the quality and quantity (total) of research outcomes.
Students’ knowledge and expectations about sustainable food systems in higher education
Authors: Migliorini Paola , Wezel Alexander , Veromann Eve , Strassner Carola , Średnicka-Tober Dominika , Kahl Johannes , Bügel Susanne , Briz Teresa , Kazimierczak Renata , Brives Hélène , Ploeger Angelika , Gilles Ute , Lüder Vanessa , Schleicher-Deis Olesa , Rastorgueva Natalia , Tuccillo Fabio , Talgre Liina , Kaart Tanel , Ismael Diana , Rembiałkowska Ewa 
Published: July 2020

Purpose
To clarify needs and requests of the young generation to the contemporary and future education on food systems, this paper aims to examine the following issues: students’ background knowledge, students’ behaviour as consumers and food citizenship, most interesting topics of SFS for students and students’ preferences and expectations in developing different skills, topics and preferences in teaching/learning methods.

Design/methodology/approach
This study was performed as an online-survey amongst eight European Universities in seven European Union (EU) countries to which 1,122 students responded. Data was analysed with descriptive and multivariate statistical analyses.

Findings
Taste and Health are the most important values and motives that influence students’ food buying and consumption decisions, but significant differences were found amongst students from different universities and countries. The most important topics for students for future teaching courses are “organic food”, “fair trade”, “organic agriculture” and most important skills to learn are “ability to make a judgement and justify decisions” and the “ability to create and innovate”. Excursions and field trips as teaching methods was given the highest ranks.

Research limitations/implications
Different study programmes and cultural backgrounds of the participating students in the different universities could be a limiting factor for the interpretation of some results.

Originality/value
These results provide a basis for improvement of higher education in the EU towards sustainable food systems based on experiential learning/teaching methods.
Accruals quality and leverage adjustments
Authors: Dufour Dominique , Luu Philippe , Teller Pierre 
Published: July 2020

PurposeThis paper analyses the role of accounting information quality on leverage adjustments. More specifically, the authors investigate whether a better accounting information leads to a higher speed of adjustment to the target financial leverage.Design/methodology/approachThe authors use a two-step method. They first estimate the target financial structure and then the influence of accruals quality on the speed of adjustment to this target. The study sample consists of French listed companies in the CAC All-Tradable index. The sample contains 210 companies and 1,713 observations.FindingsAccounting literature showed the positive influence of accounting quality on financial management. The study findings are in line with these results. The authors give evidence of that a better quality of accruals is associated with a greater speed of adjustment.Research limitations/implicationsA common limitation in this field is the use of proxies. This makes results harder to generalize. For this reason, the authors implemented several models to improve the robustness of their results.Practical implicationsThe authors give evidence that firms have an incentive to disclose a good-quality accounting information. A weak accounting quality prevents firms from adjusting their leverage to their financial target and therefore reduce their value.Social implicationsThis work shows the need for accounting standardization bodies to strive to produce accounting standards allowing the production of high-quality accounting information. In a teaching dimension, these results highlight the importance in corporate finance of acquiring expertise in quality accounting information analysis.Originality/valueThis work is original because the authors study the influence of accounting quality on speed of adjustments of firms operating in the same legal environment and using the same accounting standards, when previous work compared different accounting frameworks. The French context is characterized by the weakness of market mechanisms and the important role of banks. These characteristics are known to reduce the role of accounting information in financing process. This result is interesting because the authors demonstrate that firms operating in this context still have an incentive in producing high accounting quality information.
How does knowledge heterogeneity affect transactive memory system in innovation? Evidence from a field study
Authors: Zhang Ruilin , Wang Jun , Hao Jin-Xing 
Published: July 2020

PurposeThe dispute over the benefit of diversity on the transactive memory system (TMS) has attracted the attention with the development of global collaboration. This paper aims to discover how knowledge heterogeneity (KH), categorized as explicit and tacit KH, affects TMS and to test the mediation effect of innovation climate (IC).Design/methodology/approachData from a 6-month field study of 207 research and development (R&D) members and 7 expertize observers were analyzed by partial least squares structure equation model. Robustness check and Barron and Kenny mediation test were used to evaluate the model and confirm the mediation effect.FindingsTacit KH of R&D team negatively influences the development of TMS. Furthermore, IC partially mediates tacit KHs’ negative influence on the development of TMS.Research limitations/implicationsThese results distinguish the different influence of explicit and tacit KH on TMS and explore the mediating role of IC that has been confirmed affecting the development of TMS.Practical implicationsThese results could motivate practitioners to address more attention to tacit KH, IC and the development of TMS in the R&D team members composition.Originality/valueThis study contributes not only to elucidate the different influence of explicit and tacit KH on TMS but also to the appropriate members composition of R&D team by considering the relationships among KH, IC, TMS and innovation performance.
International rivalry and global business leadership: an historical perspective
Authors: Casson Mark 
Published: July 2020

PurposeThis paper aims to introduce economic history as a new stream of international business (IB) research. It offers a long-term perspective on how the IB has evolved over time, focussing on the interplay between multinational enterprise and the nation state.Design/methodology/approachThe paper uses existing scholarly literature on international economic history to develop eight key propositions regarding the interface between the politics and economics of foreign direct investment (FDI).FindingsThere is a rivalry between nation states and competition between firms. These two forms of conflict interact. Nations use their leading firms as instruments of international policy while leading firms rely on political and financial support from home nations. Using historical evidence and cross-country comparisons, the paper explains has the scale and scope in IB activity have changed dramatically over time.Research limitations/implicationsThere is scope for more detailed historical studies on national policies towards inward and outward FDI.Practical implicationsIt is important to see the recent international economic policies of China in a long-run historical perspective and to appreciate the similarities between its policies and those of other countries in the past.Social implicationsMany of the potential economic gains generated by FDI may be lost through an excessive commitment of resources to the pursuit of military power as a foundation for international political power.Originality/valueThis paper challenges IB researchers to widen their horizons.
How do mid-senior multinational officers perceive shared leadership for military teams? A qualitative study
Authors: Cakiroglu Sultan Serkan , Caetano António , Costa Patrícia 
Published: July 2020

PurposeThe purpose of this study is to explore the military team members’ (mid-senior multinational officers’) perceptions of shared leadership and analyze the facilitation of shared leadership in military teams.Design/methodology/approachThe sample size was 20 interviewees that participants must hold leadership positions at the mid-senior management level and from NATO member countries. To analyze the data, the authors used Gioia’s thematic analysis methodology (Gioiaet al., 2013) and manual coding rather than computer usage for the analysis, due to the small data pool and their proficiency in literature.FindingsComplexity and the new information era force military organizations toward the change and that with shared leadership they can even change the organization’s culture. The final framework highlights five main dimensions that emerged from mid-multinational military officers’ experience: driving forces of change, triggers to shared leadership, specific cases shared leadership, operational team environment and operational team characteristics. Results of the study supported that driving forces of change comprised the primary factor affecting shared leadership in military project teams.Practical implicationsThe Headquarter environment (strategic and operational planning) and planning were critical factors for the successful implementation and development of shared leadership in military project teams. Thus, military organizations could easily implement the shared leadership approach in the military research teams and planning teams.Originality/valueThe authors present a framework of leadership change context for military teams, which depicts how shared leadership could be implemented differently in military teams.
Study the elastic properties and the anisotropy of rocks using different machine learning methods
Authors: Nguyen‐Sy Tuan , To Quy‐Dong , Vu Minh‐Ngoc , Nguyen The‐Duong , Nguyen Thoi‐Trung 
Published: July 2020

ABSTRACTThis paper aims to demonstrate that the elastic stiffnesses and the anisotropic parameters of rocks can be accurately predicted from geophysical features such as the porosity, the density, the compression stress, the pore pressure and the burial depth using relevant machine learning methods. It also suggests that the extreme gradient boosting method is the best method for this purpose. It is more accurate, extremely faster to train and more robust than the artificial neural networks and the support vector machine methods. Very high R‐squared scores was obtained for the predicted elastic stiffnesses of a relevant dataset that is available in the literature. This dataset contains different types of rocks, and the values of the features are in large ranges. An optimal set of parameters was obtained by considering an appropriate sensitivity analysis. The optimized model is very easy to implement in Python for practical applications.
Evaluating an emergency department‐based mental health liaison nurse service: A multi‐site translational research project
Authors: Wand Timothy , Collett Gemma , Cutten Alexa , Stack Amanda , Dinh Michael , Bein Kendal , Green Timothy , Berendsen Russell Saartje , Edwards James , White Kathryn 
Published: July 2020

AbstractObjectiveWe aimed to translate and evaluate a model of mental health liaison nursing (MHLN) care that was embedded within EDs.MethodsThe 12 month mixed‐methods translational research study incorporated descriptive data on ED presentations, waiting times for MHLN intervention, time spent in ED and discharge arrangements across three EDs in New South Wales. The study involved an inner‐city ED (where the model was first established) and two rural sites. Surveys were conducted on a subset of ED patients (n = 58), and emergency and psychiatry staff (n = 52).ResultsTriage category 3 presentations accounted for 49% of the MHLN team workload. Response times and ED length of stay varied between city and rural sites, with rural sites demonstrating prompt response times and reduced ED length of stay. The model was strongly endorsed by patients and staff, with 95% of staff and 85% of patients across the three sites recommending the model be implemented in other emergency settings. The need for adequate resources to maintain designated levels of staffing and sustain this model of care was highlighted.ConclusionFindings from the present study indicate that a model of ED‐based MHLN care developed in a metropolitan setting was successfully translated to two rural sites. However, the model needs to adhere to certain key principles, and be adequately resourced in order to be sustainable and improve outcomes for ED patients and access to community care.
Caring soils for sustainable land uses
Authors: Ramos Juan‐Luis , Lansac Rocio 
Published: July 2020

SummaryThe aim of the article is to develop and explore the idea that soil health is an essential element in combating climate change and promoting food security. An important aspect of this is that soil, rather than simply serving to support plants and as a niche for animals and microbes, also functions as a natural reactor that, through a series of chemical and biological reactions, purifies water, replenish aquifers and maintains equilibria in surface waters. This topic is particularly timely given the recent announcement of the Mission program for Health of Soils by the European Commission. Within this realm, the article intends to catalyze and promote the debate around what defines sustainable agriculture in order to help shape its future.