bluuebunny/crossref_metadata_2025 huggingface dataset:
Stability of spectral estimates in resting-state magnetoencephalography: recommendations for minimal data duration with neuroanatomical specificity
Authors: Wiesman Alex I. , Castanheira Jason Da Silva , Baillet Sylvain
Published: September 2021

The principle of resting-state paradigms is appealing and practical for collecting data from impaired patients and special populations, especially if data collection times can be minimized. To achieve this goal, researchers need to ensure estimated signal features of interest are robust. In electro- and magnetoencephalography (EEG, MEG) we are not aware of studies of the minimal length of recording required to yield a robust one-session snapshot of the frequency-spectrum derivatives that are typically used to characterize the complex dynamics of the brain’s resting-state. We aimed to fill this knowledge gap by studying the stability of common spectral measures of resting-state MEG source time series obtained from large samples of single-session recordings from shared data repositories featuring different recording conditions and instrument technologies (OMEGA: N = 107; Cam-CAN: N = 50). We discovered that the rhythmic and arrhythmic spectral properties of intrinsic brain activity can be robustly estimated in most cortical regions when derived from relatively short recordings of 30-s to 120-s of resting-state data, regardless of instrument technology and resting-state paradigm. Using an adapted leave-one-out approach and Bayesian analysis, we also provide evidence that the stability of spectral features over time is unaffected by age, sex, handedness, and general cognitive function. In summary, short MEG sessions are sufficient to yield robust estimates of frequency-defined brain activity during resting-state. This study may help guide future empirical designs in the field, particularly when recording times need to be minimized, such as with patient or special populations.
“IL1B loss is associated with increased AR activity in castration-resistant prostate cancer”
Authors: Awadallah Wisam N. , Nanda Jagpreet S. , Kohrt Sarah E. , Grabowska Magdalena M.
Published: September 2021

Castration-resistant prostate cancer represents a continuum of phenotypes, including tumors with high levels of androgen receptor (AR) expression and activity and those which do not express AR and rely on alternative pathways for survival. The process by which AR-positive prostate cancer cells and tumors lose AR expression and acquire neuroendocrine features is referred to as neuroendocrine differentiation. Numerous therapies and exposures have been demonstrated to induce neuroendocrine differentiation in vitro, including the pro-inflammatory cytokine, interleukin 1 beta (IL-1β), encoded by the gene IL1B. The purpose of our studies was to determine the relationship between the expression and activity of AR in relationship to IL-1β and IL1B in prostate cancer. We performed analysis of de-identified human clinical data and generated prostate cancer cell lines with overexpression or knockout of IL1B. In primary prostate cancer, higher expression of IL1B predicts longer time to biochemical recurrence. In metastatic castration-resistant prostate cancer, IL1B expression is decreased and inversely correlates with AR and AR-target gene expression and AR activity, while positively correlating with the neuroendocrine prostate cancer (NEPC) score and neuroendocrine marker gene expression. In vitro, we report that AR-positive castration-resistant prostate cancer cells (C4-2B, 22Rv1) secrete IL-1β, and knockout of IL1B in these cells results in increased AR activity, in the presence and absence of dihydrotestosterone (DHT). Importantly, knockout of IL1B prevented AR attrition during androgen-deprivation. Taken together, our studies demonstrate that loss of IL1B in AR-positive castration-resistant prostate cancer cells can increase and maintain AR activity in the absence of androgens, suggesting another potential mechanism of high AR activity in castration-resistant prostate cancer.
Quantifying charge state heterogeneity for proteins with multiple ionizable residues
Authors: Fossat Martin J. , Posey Ammon E. , Pappu Rohit V.
Published: September 2021

Ionizable residues can release and take up protons and this has an influence on protein structure and function. The extent of protonation is linked to the overall pH of the solution and the local environments of ionizable residues. Binding or unbinding of a single proton generates a distinct charge microstate defined by a specific pattern of charges. Accordingly, the overall partition function is a sum over all charge microstates and Boltzmann weights of all conformations associated with each of the charge microstates. This ensemble-of-ensembles description recast as aq-canonical ensemble allows us to analyze and interpret potentiometric titrations that provide information regarding net charge as a function of pH. In theq-canonical ensemble, charge microstates are grouped into mesostates where each mesostate is a collection of microstates of the same net charge. Here, we show that leveraging the structure of theq-canonical ensemble allows us to decouple contributions of net proton binding and release from proton arrangement and conformational considerations. Through application of theq-canonical formalism to analyze potentiometric measurements of net charge in proteins with repetitive patterns of Lys and Glu residues, we are able to determine the underlying mesostate pKavalues and, more importantly, we estimate relative mesostate populations as a function of pH. This is a strength of using theq-canonical approach and cannot be obtained using purely site-specific analyses. Overall, our work shows how measurements of charge equilibria, decoupled from measurements of conformational equilibria, and analyzed using the framework of theq-canonical ensemble, provide protein-specific quantitative descriptions of pH-dependent populations of mesostates. This method is of direct relevance for measuring and understanding how different charge states contribute to conformational, binding, and phase equilibria of proteins.

STATEMENT OF SIGNIFICANCE

The net charge of a protein in solution is governed by the overall pH as well as context and conformational contexts. Measurements of net charge are accessible via techniques such as potentiometry that quantify the buffering capacity of a protein solution. Here, we use the formal structure of theq-canonical ensemble to identify charge states that are compatible with a measured net charge profile as a function of pH. Our approach highlights how measurements of charge, decoupled from measurements of conformation, can be used to identify the ensembles of charge states that contribute to the overall population for given solution conditions. The methods introduced will be useful for measuring charge states and interpreting these measurements in different contexts.
Characterisation of a nucleo-adhesome
Authors: Byron Adam , Griffith Billie G. C. , Herrero Ana , Loftus Alexander E. P. , Koeleman Emma S. , Dawson John C. , Kogerman Linda , McGivern Niamh , Culley Jayne , Grimes Graeme R. , Serrels Bryan , von Kriegsheim Alex , Brunton Valerie G. , Frame Margaret C.
Published: September 2021

In addition to central functions in cell adhesion signalling, integrin-associated proteins have wider roles at sites distal to adhesion receptors. In experimentally defined adhesomes, we noticed that there is clear enrichment of proteins that localise to the nucleus, and conversely, we now report that nuclear proteomes contain a class of adhesome components that localise to the nucleus. We here defined a nucleo-adhesome, providing experimental evidence for a remarkable scale of nuclear localisation of adhesion proteins, establishing a framework for interrogating nuclear adhesion protein functions. In adding to nuclear FAK’s known roles in regulating transcription, we now show that nuclear FAK regulates expression of many adhesion-related proteins that localise to the nucleus and that nuclear FAK binds to the adhesome component and nuclear protein Hic-5. FAK and Hic-C work together in the nucleus, co-regulating a subset of genes transcriptionally. We describe the first nucleo-adhesome using a squamous cancer cell model, and demonstrate the new principle that there are nuclear adhesion protein subcomplexes that cooperate to control transcription.
Molecular determinants of the modulation of the VSD-PD coupling mechanism of the KV7.1 channel by the KCNE1 ancillary subunits
Authors: Kongmeneck Audrey Deyawe , Kasimova Marina A. , Tarek Mounir
Published: September 2021

The IKS current is diffused through the plasma membranes of cardiomyocytes during the last phase of the cardiac action potential. This repolarization current is conducted by a tetrameric protein complex derived from the co-expression of four voltage-gated potassium channel KV7.1 α-subunits and KCNE1 ancillary subunits from KCNQ1 and KCNE1 genes, respectively. We studied here the conformational space of KV7.1 in presence and absence of KCNE1, by building transmembrane models of their known Resting, Intermediate, and Activated states. We conducted Molecular Dynamics simulations of these models in lipid bilayers including the phosphatidyl-inositol-4,5-bisphosphate (PIP2) lipids. The comparative analysis of MD trajectories obtained for the KV7.1 and IKS models reveals how KCNE1 shifts the coupling mechanism between the activation state of the Voltage Sensor Domain of the channel and the conformation (open or closed) of its Pore Domain.
The Correlation Between Cell and Nucleus Size is Explained by an Eukaryotic Cell Growth Model
Authors: Wu Yufei , Janmey Paul , Sun Sean X.
Published: September 2021

In eukaryotes, the cell volume is observed to be strongly correlated with the nuclear volume. The slope of this correlation depends on the cell type, growth condition, and the physical environment of the cell. We develop a computational model of cell growth and proteome increase, incorporating the kinetics of amino acid import, protein/ribosome synthesis and degradation, and active transport of proteins between the cytoplasm and the nucleoplasm. We also include a simple model of ribosome biogenesis and assembly. Results show that the cell volume is tightly correlated with the nuclear volume, and the cytoplasm-nucleoplasm transport rates strongly influences the cell growth rate as well as the cytoplasm/nucleoplasm ratio. Ribosome assembly and the ratio of ribosomal proteins to mature ribosomes also influence the cell volume and the cell growth rate. We find that in order to regulate the cell growth rate and the cytoplasm/nucleoplasm ratio, the cell must optimally control groups of kinetic parameters together, which could explain the quantitative roles of canonical growth pathways. Finally, using an extension of our model and single cell RNAseq data, it is possible to construct a detailed proteome distribution, provided that a quantitative cell division mechanism is known.

Author summary

We develop computational model of cell proteome increase and cell growth to compute the cell volume to nuclear volume ratio. The model incorporates essential kinetics of protein and ribosome synthesis/degradation, and their transport across the nuclear envelope. The model also incorporates ribosome biogenesis and assembly. The model identifies the most important parameters in determining the cell growth rate and the nucleoplasm/cytoplasm ratio, and provides a computational starting point to construct the cell proteome based on the RNAseq data.
Intra- and intertumoral heterogeneity of liver metastases in a patient with uveal melanoma revealed by single-cell RNA sequencing
Authors: Lin Weitao , Beasley Aaron B. , Ardakani Nima Mesbah , Denisenko Elena , Calapre Leslie , Jones Matthew , Wood Benjamin A. , Warburton Lydia , Forrest Alistair R. R. , Gray Elin S.
Published: September 2021

Tumor heterogeneity is a major obstacle to the success of cancer treatment. An accurate understanding and recognition of tumor heterogeneity is critical in the clinical management of cancer patients. Here, we utilized single-cell RNA sequencing (scRNA-seq) to uncover the intra- and intertumoral heterogeneity of liver metastases from a patient with metastatic uveal melanoma. The two metastases analyzed were largely infiltrated by noncancerous cells with significant variability in the proportion of different cell types. Analysis of copy-number variations (CNVs) showed gain of 8q and loss of 6q in both tumors, but loss of Chromosome 3 was only detected in one of the tumors. Single-nucleotide polymorphism (SNP) array revealed a uniparental isodisomy 3 in the tumor with two copies of Chromosome 3, indicating a regain of Chromosome 3 during the development of the metastatic disease. In addition, both tumors harbored subclones with additional CNVs. Pathway enrichment analysis of differentially expressed genes revealed that cancer cells in the metastasis with isodisomy 3 showed up-regulation in epithelial–mesenchymal transition and myogenesis related genes. In contrast, up-regulation in interferon signaling was observed in the metastasis with monosomy 3 and increased T-cell infiltrate. This study highlights the complexity and heterogeneity of different metastases within an individual case of uveal melanoma.
Crystal structure of a MarR family protein from the psychrophilic bacterium Paenisporosarcina sp. TG-14 in complex with a lipid-like molecule
Authors: Hwang Jisub , Park Sun-Ha , Lee Chang Woo , Do Hackwon , Shin Seung Chul , Kim Han-Woo , Lee Sung Gu , Park Hyun Ho , Kwon Sunghark , Lee Jun Hyuck
Published: September 2021

MarR family proteins regulate the transcription of multiple antibiotic-resistance genes and are widely found in bacteria and archaea. Recently, a new MarR family gene was identified by genome analysis of the psychrophilic bacterium Paenisporosarcina sp. TG-14, which was isolated from sediment-laden basal ice in Antarctica. In this study, the crystal structure of the MarR protein from Paenisporosarcina sp. TG-14 (PaMarR) was determined at 1.6 Å resolution. In the crystal structure, a novel lipid-type compound (palmitic acid) was found in a deep cavity, which was assumed to be an effector-binding site. Comparative structural analysis of homologous MarR family proteins from a mesophile and a hyperthermophile showed that the DNA-binding domain of PaMarR exhibited relatively high mobility, with a disordered region between the β1 and β2 strands. In addition, structural comparison with other homologous complex structures suggests that this structure constitutes a conformer transformed by palmitic acid. Biochemical analysis also demonstrated that PaMarR binds to cognate DNA, where PaMarR is known to recognize two putative binding sites depending on its molar concentration, indicating that PaMarR binds to its cognate DNA in a stoichiometric manner. The present study provides structural information on the cold-adaptive MarR protein with an aliphatic compound as its putative effector, extending the scope of MarR family protein research.
Corrosion mechanism and fatigue behavior of 2A70-T6 aluminum alloy under alternating corrosion and fatigue
Authors: Fu Lei , Li Hui , Lin Li , Wang Qingyuan , Fan Qi , Huang Xinjie , Li XiuLan , Lai Sheng , Chen Lifei
Published: September 2021

Purpose

Most supersonic aircraft were manufactured using 2A70 aluminum alloy. The purpose of this paper is to study the corrosion mechanism and fatigue behavior of an aircraft in a semi-industrial atmospheric corrosive environment, alternating effects of corrosion and fatigue were used to simulate the aircraft’s ground parking corrosion and air flight fatigue.

Design/methodology/approach

For this purpose, the aluminum alloy samples were subjected to pre-corrosion and alternating corrosion-fatigue experiments. The failure mechanisms of corrosion and corrosion fatigue were analyzed using microscopic characterization methods of electrochemical testing, X-ray diffraction and scanning electron microscopy. Miner’s linear cumulative damage rule was used to predict the fatigue life of aluminum alloy and to obtain its safe fatigue life.

Findings

The results showed that the corrosion damage caused by the corrosive environment was gradually connected by pitting pits to form denudation pits along grain boundaries. The deep excavation of chloride ions and the presence of intergranular copper-rich phases result in severe intergranular corrosion morphology. During cyclic loading, alternating hardening and softening occurred. The stress concentration caused by surface pitting pits and denudation pits initiated fatigue cracks at intergranular corrosion products. At the same time, the initiation of multiple fatigue crack sources was caused by the corrosion environment and the morphology of the transient fracture zone was also changed, but the crack propagation rate was not basically affected. The polarization curve and impedance analysis results showed that the corrosion rate increases first, decreases and then increases. Fatigue failure behavior was directly related to micro characteristics such as corrosion pits and microcracks.

Originality/value

In this research, alternating effects of corrosion and fatigue were used to simulate the aircraft’s ground parking corrosion and air flight fatigue. To study the corrosion mechanism and fatigue behavior of an aircraft in a semi-industrial atmospheric corrosive environment, the Miner’s linear cumulative damage rule was used to predict the fatigue life of aluminum alloy and to obtain its safe fatigue life.
Information seeking for coping with cancer: a systematic review
Authors: Petersen Emil , Jensen Jesper Gabs , Frandsen Tove Faber
Published: September 2021

Purpose

Information seeking can be used to make sense of a situation or solve a problem. Information seeking can be considered a coping strategy when facing illness, crisis or other life-changing events. Cancer is a globally occurring, life-threatening disease, and this review aims to provide an overview of the existing literature on the active information seeking behaviour of cancer patients specifically focussing on how active information seeking serves as a coping strategy.

Design/methodology/approach

This study adheres to current guidelines for conducting systematic reviews and consequently, thorough literature searches were conducted in four databases: Medline, Embase, CINAHL and Scopus which resulted in 7,179 publications. Following a careful screening process, this systematic review identifies 14 studies on the use of information seeking to cope with cancer.

Findings

The included studies consist of both qualitative and quantitative approaches to analysing the use of information seeking to cope with cancer. The included studies have focussed primarily on demographic factors, the impact of affect, information needs, sources and coping strategies.

Research limitations/implications

A number of research gaps within library and information science are identified. Bringing research in this field into information science could allow for a greater understanding of information literacy, the use of existing information and the process of information searching when using information seeking to cope with serious illness.

Originality/value

This systematic review focusses on how information seeking serves as a coping strategy for cancer patients and provides an overview of the recent literature.
Automation in Colombia: assessing skills needed for the future of work
Authors: Jones Michael , Idrovo-Carlier Sandra , Rodriguez Alfredo J.
Published: September 2021

Purpose

The purpose of this paper is to identify workforce skills that protect an occupation from elimination due to automation technology.

Design/methodology/approach

The authors apply a Gaussian process (GP) classifier, based on the level of non-automatable work activities in an occupation, to USA and Colombian occupational datasets.

Findings

The authors find that communication, interpersonal relationship management and decision-making skills are most important in occupations that are resistant to automation.

Research limitations/implications

The results are based on work activities data from the Occupational Information Network (O*NET) database developed for the USA labor market. This dataset does not capture significant differences in work activities, where they exist, for the same occupation between the two countries. The findings are also limited to Colombia. Readers should be careful to extrapolate the findings outside of this geography.

Originality/value

The authors discover that automation is likely to be a global phenomenon that can only be slightly mitigated by cultural and political factors.
Moderated mediation between work–life conflict and employee turnover intentions: the role of job dissatisfaction and workplace social support
Authors: Shakoor Arsalan , Haider Sajid , Akhtar Muhammad Hanif , Asadullah Muhammad Ali
Published: September 2021

Purpose

The purpose of this study was to examine a moderated mediation model of job dissatisfaction and workplace social support in the relationship between work–life conflict and turnover intentions.

Design/methodology/approach

Data were collected in a cross-sectional survey of 220 police investigation officers. Partial least squares structural equation modeling was applied for data analysis.

Findings

Empirical findings of study indicate that work–life conflict enhances employee turnover intentions by creating job dissatisfaction. However, workplace social support buffers this effect and reduces turnover intentions by weakening the effect of work–life conflict on job dissatisfaction.

Research limitations/implications

This study contributes to personnel management and organizational psychology literature by explaining how workplace social support can affect the mediating process of job dissatisfaction through which the relationship between work–life conflict and turnover intentions is determined. The limitations are related to external validity, single source data and cross-sectional nature of data.

Practical implications

Organizational leaders and practitioners can take insights from the findings of this study that if workplace social support prevails at a level greater than work–life conflict, it will nullify or suppress the effect of work–life conflict on turnover intentions by reducing job dissatisfaction.

Originality/value

The originality value of this study is that it has addressed the scarcity of testing boundary conditions of the indirect effect of work–life conflict on turnover intentions through job dissatisfaction.
Pro softball fan segments: a two-step cluster analysis
Authors: Mumcu Ceyda , Lough Nancy
Published: September 2021

Purpose

Niche sports such as women's professional sport leagues face many challenges to developing and expanding their fan base. Understanding sport fans, segmenting consumer bases and targeting them effectively can assist in both developing the fan base and competing for investments like sponsorships and media rights. The purpose of this study was to explore consumer segments of the National Pro Fastpitch (NPF), a niche softball league, by identifying demographic and psychographic characteristics of the segments and developing a persona for each segment.

Design/methodology/approach

Data were collected from 3,463 NPF consumers with the assistance of NPF league officials using their social media outlets. A two-step cluster analysis was performed employing both categorical and continuous variables to inform the segmentation, which was followed with chi-squared statistics and two MANOVAs to compare the segments' demographic characteristics, points of attachment (POAs) levels and attendance and viewership of NPF games.

Findings

Three distinct consumer segments with unique demographic, POA and softball participation characteristics were identified. Differences among these segments' consumption of NPF games validated the existence of three distinct consumer segments.

Originality/value

This research is the first to examine consumer behavior in women's softball, and it expands the sport marketing literature through the identification of consumer segments of a niche sport league with a novel cluster analysis. Blending theory and practice by incorporating both demographic and psychographic variables into market segmentation, the research uniquely serves this niche sport and thereby informs improved marketing practice.
ADHD symptoms and entrepreneurial intention among Vietnamese college students: an empirical study
Authors: Duong Cong Doanh , Le Thi Loan
Published: September 2021

Purpose

This study aims to develop a conceptual framework that integrated insights from Shapero and Sokol (1982)’s model of entrepreneurial event, Bandura (1977)’s social learning theory and clinical psychology to empirically test and discover the underlying mechanism of how attention deficit hyperactive disorder (ADHD) symptoms can influence student entrepreneurial intention.

Design/methodology/approach

The study uses structural equation modeling with a sample of 2,218 students from 14 universities in Vietnam.

Findings

The research reveals that although ADHD symptoms are not found to have the direct role in shaping student perceived feasibility entrepreneurial intention, these psychiatric symptoms have more influences and significances in the growth of entrepreneurial self-efficacy and perceived desirability. Also, entrepreneurial self-efficacy and perceived desirability are found to be full mediators in ADHD symptoms and entrepreneurial intention linkage. Besides, both perceived desirability and perceived feasibility partially mediate the entrepreneurial self-efficacy effect on entrepreneurial intention.

Practical implications

The findings provide policymakers and universities with important insights into how to nurture intention to become entrepreneurs among college students, especially those individuals.

Originality/value

The present study offers a new insight about the linkage between ADHD symptoms and entrepreneurial intention. Also, the model of entrepreneurial event and the social learning theory are shown to be unifying theoretical construct of the relationship between psychiatric symptoms and entrepreneurial intention among Vietnamese students.
“Seriously, Australia, why are you so stingy with Wi-Fi?”: customer satisfaction with Wi-Fi speed in Australian hotels and lessons for public Wi-Fi provision
Authors: Grechyn Viktor , McShane Ian
Published: September 2021

Purpose

This paper aims to analyse whether the speed of Wi-Fi in hotels influences customer satisfaction with hotels and the implications of this for the provision of Wi-Fi by commercial and governmental bodies seeking to boost tourism.

Design/methodology/approach

Regression analysis on data from Australian hotels (191 entries) and 111 responses to a national survey of local government authorities on public Wi-Fi (PWF) provision were combined with a literature review and content analysis of online reviews by hotel customers.

Findings

If Wi-Fi quality rises by 1%, customer satisfaction with the hotel increases by 0.376/100 units. In the areas where hotel Wi-Fi is of better quality, PWF provided by the local government is also of better quality; the reverse statement is also true.

Practical implications

Tourists value continuous access to Wi-Fi, whether provided by commercial or public bodies. It is imperative for hotels and local governments seeking to boost tourist activity to invest in quality Wi-Fi networks. However, to assist this, national policies should address spatial disparities in broadband infrastructure revealed in the study.

Originality/value

This study looks beyond a conventional distinction between the private and public provision of Wi-Fi to examine the shared interests of industry and government in this essential component of tourist infrastructure. The study is unique in the English-speaking literature for its focus on the link between the quality of Wi-Fi provision and customer satisfaction, with original results and discussion providing a rationale for investing in quality Wi-Fi networks.
Tourism and COVID-19: changes in travel patterns and tourists' behavior in Iran
Authors: Mirzaei Roozbeh , Sadin Maryam , Pedram Motahareh
Published: September 2021

Purpose

This paper aims to investigate the changes in travel patterns and tourist behavior due to the COVID-19 outbreak. This study realizes these changes and reports them to help restore tourism.

Design/methodology/approach

This applied study used library sources and a survey conducted through an online questionnaire. The questionnaire incorporated data from previous studies and the most recent online databases. Items were exploratory factors analyzed using the principal component method and varimax rotation. The interpretation of the data collected was consistent with the attributes the questionnaire was designed to measure.

Findings

The research findings show that health and safety have come to the forefront of travelers' needs. The hygiene and disinfection of tourism facilities have changed from hygiene factors to motivator factors. The extended length of trips is perceived as a risk to their health; hence travelers prefer to take shorter trips. They also rather get help from professionals to book their trips.

Research limitations/implications

This research was conducted only in Iran, where travel restrictions were periodically put on and removed. If this study could be conducted in countries with no domestic travel restrictions, other valuable findings such as changes in consumer spending and preferences toward travelling and safety could be found.

Practical implications

This paper provides information on the latest changes to travel patterns and tourists' behavior which can be implied by DMOs (Destination Marketing Organization), governments and private tour operators to understand and consider travelers emerging needs.

Originality/value

This paper enables better planning and organization for the future and restart of tourism post-COVID-19.
Accounting education in a Latin American country during COVID-19: proximity at a distance
Authors: Macias Hugo A. , Patiño-Jacinto Ruth Alejandra , Castro Maria-Fanny
Published: August 2021

Purpose

This paper aims to contribute to the emerging literature on accounting education in the COVID-19 context. It proposes expanding the literature in its methodological, geographical and conceptual components.

Design/methodology/approach

This paper is a qualitative study that used a survey as the method. A total of 122 instructors answered the survey from 22 accounting programmes offered in 11 Colombian cities. The dialogic education model of Paulo Freire is the framework for analysis.

Findings

The accounting instructors’ response was to move from face-to-face classrooms to online classrooms, using widely known platforms. The instructors quickly learned to use tools that enabled new dialogue mechanisms with the students. The result was, paradoxically, closer communication at a distance.

Research limitations/implications

The COVID-19 lockdown accelerated the changes in teaching, learning, contextualisation, use of “new” technologies and, above all, practising Freirian dialogue. There is a need to research longer periods and use more data collection and analysis tools.

Practical implications

Evidence of how to teach accounting en masse from online classrooms in a developing country could accelerate the expansion of virtual accounting programmes.

Social implications

The new context allows increasing the number of students because it does not require travel to large cities.

Originality/value

This paper makes three contributions to the literature on accounting education in the COVID-19 context as follows: it describes the phenomenon in Colombia, a context little studied in the international accounting literature; transcends autoethnographic studies, as it is based on a qualitative survey of national scope and analyses the phenomenon based on Paulo Freire’s complete model, which includes context, educational process design and action process.
Total Quality Management in higher education: a literature review on barriers, customers and accreditation
Authors: Jasti Naga Vamsi Krishna , Venkateswaran V. , Kota Srinivas
Published: September 2021

Purpose

The purpose of this paper is to analyze the evolution of Total Quality Management (TQM) in terms of barriers, customers and accreditation in higher education (HE) over the last three decades (1991–2020) using literature review to establish the current state.

Design/methodology/approach

A total of 137 articles across 55 journals were consolidated for this review specifically focused on TQM (barriers, customers and accreditation) in HE. The investigations were carried out to identify the chronological growth of articles, research streams and methodologies. The articles were classified based on four research approaches and three research streams which have been reviewed in detail.

Findings

Considering the rapid growth in the HE sector and the concerns over reduction in quality of education especially in developing countries, the importance of TQM in HE is immense. The findings include identification of the barriers to successful TQM implementation, the need for alignment of TQM objectives of higher educational institutions (HEIs) and identified target customer(s) with the selected model/framework and the impact of accreditation/certification in the attainment of TQM.

Originality/value

This study which tries to bring a perspective to the main trends in TQM application to HE with respect to barriers, customers and accreditation over the last three decades is expected to add to the body of knowledge in this area and help future researchers to focus on the relevant areas identified in this paper.
Harnessing social media to understand tourist mobility: the role of information technology and big data
Authors: Chen Jinyan , Becken Susanne , Stantic Bela
Published: August 2021

Purpose

This paper aims to examine key parameters of scholarly context and geographic focus and provide an assessment of theoretical underpinnings of studies in the field of social media and visitor mobility. This review also summarised the characteristics of social media data, including how data are collected from different social media platforms and their advantages and limitations. The stocktake of research in this field was completed by examining technologies and applied methods that supported different research questions.

Design/methodology/approach

This literature review applied a mix of methods to conduct a literature review. This review analysed 82 journal articles on using social media to track visitors’ movements between 2014 and November 2020. The literature compared the different social media, discussed current applied theories, available technologies, analysed the current trend and provided advice for future directions.

Findings

This review provides a state-of-the-art assessment of the research to date on tourist mobility analysed using social media data. The diversity of scales (with a dominant focus on the city-scale), platforms and methods highlight that this field is emerging, but it also reflects the complexity of the tourism phenomenon. This review identified a lack of theory in this field, and it points to ongoing challenges in ensuring appropriate use of data (e.g. differentiating travellers from residents) and the ethics surrounding them.

Originality/value

The findings guide researchers, especially those with no computer science background, on the different types of approaches, data sources and methods available for tracking tourist mobility by harnessing social media. Depending on the particular research interest, different tools for processing and visualization are available.
Research note: Inverse propagation in 1.5‐dimensional amplitude‐versus‐offset joint migration inversion
Authors: Sun Yimin , Verschuur Eric
Published: September 2021

The state‐of‐the‐art joint migration inversion faces the so‐called amplitude‐versus‐offset challenge, due to adopting over‐simplified one‐way propagation, reflection and transmission operators to avoid over‐parameterization in the inversion process. To overcome this challenge, we apply joint migration inversion to horizontally layered media (or 1.5‐dimensional media) and parameterize the solution space via density and velocity models. In this scenario, one‐way propagation, reflection and transmission operators required by the joint migration inversion process can be analytically and correctly derived from the subsurface models, so the amplitude‐versus‐offset challenge is successfully overcome. We introduce a new concept, which is named ‘inverse propagation’, into our 1.5‐dimensional amplitude‐versus‐offset joint migration inversion. It can correctly reconstruct subsurface wavefields by using a surface‐recorded receiver wavefield with all the influence of transmission, reflection and multiples accounted for. A synthetic example is used to demonstrate the correctness of the inverse propagation. This work is the foundation to further develop the 1.5‐dimensional amplitude‐versus‐offset joint migration inversion technology.
American eel personality and body length influence passage success in an experimental fishway
Authors: Mensinger Matthew A. , Brehm Allison M. , Mortelliti Alessio , Blomberg Erik J. , Zydlewski Joseph D.
Published: August 2021

Millions of dams impair watershed connectivity across the globe and have severely affected migratory fish populations. Fishways offer upstream passage opportunities, but artificial selection may be imposed by these structures. Using juvenile American eel Anguilla rostrata as a model species, we consider whether individual differences in behaviour (i.e. personality) and fish size can predict passage success.

We evaluated the expression of bold and exploratory behaviours using open field and emergence assays in the laboratory. Then we assessed the propensity for individuals to volitionally climb through an experimental fishway to understand if personality and fish size could predict climbing success.

We demonstrate personality in juvenile eels, and swimming speed in the open field was negatively associated with climbing propensity. Slower swimmers were up to 60% more likely to use the passage device suggesting that more exploratory eels incurred greater passage success. For successful climbers, climbing time was negatively associated with fish length.

Synthesis and applications. Our results suggest fish may segregate at barriers based on personality and size. Preventing a subset of individuals from accessing upstream habitat is likely to have negative consequences for fish populations and aquatic ecosystems. Selection may be alleviated by increasing passage opportunities, maximizing fishway attraction and avoiding inefficient passage solutions.
Breeding systems of the Japanese‐endemic carnivorous sundew species Drosera makinoi and Drosera toyoakensis (Droseraceae)
Authors: Tagawa Kazuki , Sahara Yurie , Watanabe Mikio
Published: August 2021

In response to unfavorable environmental conditions, some Drosera species in the northern hemisphere do not open their flowers but form bud‐like flowers. The bud‐like flowers exhibit pseudo‐cleistogamous behavior and produce similar numbers of seeds as open flowers. However, it is not clear how common this type of reproduction is in the genus Drosera. In this study, we examined the effects of flowering (opening flowers/forming bud‐like flowers) and pollinator visitation on seed production in Drosera makinoi and D. toyoakensis, two endemic species in Japan. D. makinoi and D. toyoakensis plants did not open 20%–40% chasmogamous flowers to form bud‐like flowers. The numbers of mature seeds produced by bud‐like flowers were significantly lower than those produced by open flowers (0%–2% of open flowers). In D. makinoi, the percentage of bud‐like flowers correlated negatively with the seed production per plant, suggesting that the production of bud‐like flowers decreased the lifetime reproductive success. In both D. makinoi and D. toyoakensis, pollinator‐excluded flowers produced similar numbers of seeds as control flowers. Our results suggest that pseudo‐cleistogamy does not occur in D. makinoi and D. toyoakensis, and they produce seeds without pollinator visits once flowers open.
Professional development in drama with learners with special educational needs and disabilities (SEND)
Authors: Peter Melanie
Published: August 2021

Educators usually recognise the value of drama‐in‐education, but hesitate to use it with unpredictable diverse groups that have limited communication and social understanding. This article evaluates a professional development initiative in an all‐age special school (3–19 years) in eastern England as a whole‐school improvement strategy to promote drama for enhancing children's communication through dialogic teaching. The project was the culmination of an action research cycle to refine an original constructivist five‐staged professional developmental model for teaching inclusive groups with children with special educational needs and disabilities. Following a staff training session, the researcher supported each teacher in class once a week for 6 weeks, using collegial mentoring strategies. The model enabled their starting point and priority next step to be accurately identified towards them gradually taking over leading drama sessions. A pedagogical framework for early drama – Prescribed Drama Structures – proved pivotal, enhanced by a flexible model for exploring story and understanding social narrative.
Motivation in special education: doing it differently or doing it better?
Authors: Martin Clare
Published: August 2021

This article discusses how one special school for pupils with moderate‐learning difficulties reflects themes in the literature on pupil motivation. It aims to highlight good practice and is based on reflections from prolonged working with the school as an advisory teacher, illustrated with teacher, pupil and parent comments from Y6 Education Health Care Plans and Y7 annual review documents (n = 23) and from OFSTED reports. It beings by exploring the origins and influences on pupil motivation, identifying the differences between intrinsic and extrinsic motivation and examining motivational traits and attributions within individuals. It then discusses the motivational influences of the social and learning contexts of the school: organisation, curriculum and pedagogy, and goals and rewards. Throughout, school‐specific observations are related to and discussed alongside themes in the literature. Motivation is commonly defined in quantitative terms that describe the intensity, direction and duration of behaviour and effort. It is the qualitative aspects of how motivation is aroused and maintained that are germane to this paper.
‘You have to find the right words to be honest’: nurturing relationships between teachers and parents of children with Special Educational Needs
Authors: Solvason Carla , Proctor Samuel
Published: August 2021

This article explores the views of a small group of teachers who specialise in supporting children with Special Educational Needs (SEN). Frequently literature exploring the relationship between parents and teachers of children with SEN uses language which is confrontational, even aggressive. This research, based within a specialist school in England, portrays the voices of the teachers themselves, presenting their perspective on creating relationships with, and supporting the parents of, children with SEN. Far from the language of antagonism portrayed in so many articles, the rich descriptions elicited through focus group discussion demonstrate relationships that are established upon sensitivity, understanding, kindness and care. Our data paint a picture of teachers who feel deeply for the emotional turmoil that many of their parents have suffered before reaching their door; and do all that is possible to hold them safely, while they acclimatise to the new ‘normality’ of their child accessing specialist provision.
Implementing the 2014 SEND reforms in England: perspectives from SENCOs
Authors: Tysoe Keith , Vincent Kerry , Boulton Helen
Published: August 2021

This article is based on research conducted within two years of the 2014 SEND (special educational needs and disability) reforms being in force and reports on the experiences of five SENCOs (special educational needs coordinators) on implementing the reforms in London schools. The research was conducted primarily to inform professional practice and improve delivery of the principles underpinning the reforms. The research deployed an adapted version of SWOT analysis as a tool for seeking the views of SENCOs on the perceived benefits and challenges of the SEND reforms. The findings demonstrate that SENCOs broadly support the principles of the reforms. However, SENCOs find some of the procedures in the 2015 SEND Code of Practice as proving problematic. There still remains a significant focus on managing administrative processes, rather than bringing about a fundamental change to school culture and educational provision. The article concludes by making several recommendations on ways to reduce bureaucracy for SENCOs and increase their focus on classroom practice.
Immigration and inequality: Analysis of Mainland Chinese spouses during the early stages of their time in Taiwan
Authors: Tsai Wehn‐Jyuan
Published: August 2021

In this study on Mainland Chinese women in Taiwan, I examined the effect of immigration‐related disruption on the assimilation of these women into the Taiwanese labour market during 2005–2015. Accordingly, I used a unique dataset obtained by linking three administrative registers to measure the assimilation process. In addition, I employed the nearest‐neighbour matching estimator to assess heterogeneous effects on each Mainland Chinese woman. The results indicated narrowing immigrant–native gaps in labour supply (full‐time employment rates) and real monthly insured wages for their first traceable job in favour of Mainland Chinese women. In general, I found that Mainland Chinese women assimilated into the Taiwanese workforce at levels comparable with those of Taiwanese women.
The Independence of Justice in the Cauldron of International Relations
Authors: Mégret Frédéric
Published: September 2021

This article analysesa series of judicial crises involving the investigation, arrest and prosecution of prominent foreign nationals. Such crises have in common that they imperil the independence of justice in novel, transnational ways. They are the product of cultural misunderstandings, including the incredulity of foreign authoritarian States that the judiciary of the forum State is indeed independent. They raise dilemmas for States in seeking to both respect the independence of their own courts and minimise the consequences to the national interest. The article explores some of the ways in which this tension has been mediated in practice, and the challenges raised. It concludes with some thoughts on the changing nature of the independence of the judiciary in an era of foreign governmental assertiveness.
Adieu to Attribution
Authors: Zhu Qinhao
Published: September 2021

Applying the illegality defence to corporate claims remains one of the most vexed issues at the interface of the law of obligations and company law. In Singularis Holdings Ltd v Daiwa Capital Markets Europe Ltd, the Supreme Court held this defence did not bar a company from suing its bank for negligently failing to stop the company's controlling director from misappropriating funds. While the result is defensible, the decision fails to resolve some important uncertainties: (1) the relationship between the defence and attribution of illegal acts to companies; (2) the role of contributory negligence; (3) the (un)importance of corporate personality; and (4) the future of the illegality defence. This note argues that, while not a panacea, taking a practical, rather than a metaphysical, view of companies is the first step in resolving these difficulties.