bluuebunny/crossref_metadata_2025_split huggingface dataset:
Delta- and theta-band cortical tracking and phase-amplitude coupling to sung speech by infants
Authors: Attaheri Adam , Choisdealbha Áine Ní , Di Liberto Giovanni M. , Rocha Sinead , Brusini Perrine , Mead Natasha , Olawole-Scott Helen , Boutris Panagiotis , Gibbon Samuel , Williams Isabel , Grey Christina , Flanagan Sheila , Goswami Usha 
Published: October 2020

AbstractThe amplitude envelope of speech carries crucial low-frequency acoustic information that assists linguistic decoding at multiple time scales. Neurophysiological signals are known to track the amplitude envelope of adult-directed speech (ADS), particularly in the theta-band. Acoustic analysis of infant-directed speech (IDS) has revealed significantly greater modulation energy than ADS in an amplitude-modulation (AM) band centered on ∼2 Hz. Accordingly, cortical tracking of IDS by delta-band neural signals may be key to language acquisition. Speech also contains acoustic information within its higher-frequency bands (beta, gamma). Adult EEG and MEG studies reveal an oscillatory hierarchy, whereby low-frequency (delta, theta) neural phase dynamics temporally organize the amplitude of high-frequency signals (phase amplitude coupling, PAC). Whilst consensus is growing around the role of PAC in the matured adult brain, its role in thedevelopmentof speech processing is unexplored.Here, we examined the presence and maturation of low-frequency (<12 Hz) cortical speech tracking in infants by recording EEG longitudinally from 60 participants when aged 4-, 7- and 11-months as they listened to nursery rhymes. After establishing stimulus-related neural signals in delta and theta, cortical tracking at each age was assessed in the delta, theta and alpha [control] bands using a multivariate temporal response function (mTRF) method. Delta-beta, delta-gamma, theta-beta and theta-gamma phase-amplitude coupling (PAC) was also assessed. Significant delta and theta but not alpha tracking was found. Significant PAC was present at all ages, with both delta and theta -driven coupling observed.Graphical abstractHighlightsLongitudinal EEG study in which 4, 7- & 11-month infants listened to nursery rhymesWe demonstrate cortical speech tracking via delta & theta neural signals (mTRF)Periodogram (PSD) analysis revealed stimulus related delta & theta PSD peaksDelta and theta driven phase amplitude coupling (PAC) was found at all agesGamma frequency amplitudes displayed stronger PAC to low frequency phases than beta
Cryo-EM reveals structural breaks in a patient-derived amyloid fibril from systemic AL amyloidosis
Authors: Radamaker Lynn , Baur Julian , Huhn Stefanie , Haupt Christian , Hegenbart Ute , Schönland Stefan , Bansal Akanksha , Schmidt Matthias , Fändrich Marcus 
Published: October 2020

AbstractSystemic AL amyloidosis is a debilitating and potentially fatal disease that arises from the misfolding and fibrillation of immunoglobulin light chains (LCs). The disease is patient-specific with essentially each patient possessing a unique LC sequence. In this study, we present the first ex vivo fibril structures of a λ3 LC. The fibrils were extracted from the explanted heart of a patient (FOR005) and consist of 115 residues, mainly from the LC variable domain. The fibril structures imply that a 180° rotation around the disulfide bond and a major unfolding step are necessary for fibrils to form. The two fibril structures show highly similar fibril protein folds, differing in only a 12-residue segment. Remarkably, the two structures do not represent separate fibril morphologies, as they can co-exist at different z-axial positions within the same fibril. Our data imply the presence of structural breaks at the interface of the two structural forms.
Characterisation of the Semliki Forest Virus-host cell interactome reveals the viral capsid protein as an inhibitor of nonsense-mediated mRNA decay
Authors: Contu Lara , Balistreri Giuseppe , Domanski Michal , Uldry Anne-Christine , Mühlemann Oliver 
Published: October 2020

AbstractThe positive-sense, single-stranded RNA alphaviruses pose a potential epidemic threat. Understanding the complex interactions between the viral and the host cell proteins is crucial for elucidating the mechanisms underlying successful virus replication strategies and for developing specific antiviral interventions. Here we present the first comprehensive protein-protein interaction map between the proteins of Semliki Forest Virus (SFV), a mosquito-borne member of the alphaviruses, and host cell proteins. Among the many identified cellular interactors of SFV proteins, the enrichment of factors involved in translation and nonsense-mediated mRNA decay (NMD) was striking, reflecting the virus’ hijacking of the translation machinery and indicating viral countermeasures for escaping NMD by inhibiting NMD at later time points during the infectious cycle. In addition to observing a general inhibition of NMD about 4 hours post infection, we also demonstrate that transient expression of the SFV capsid protein is sufficient to inhibit NMD in cells, suggesting that the massive production of capsid protein during the SFV reproduction cycle is responsible for NMD inhibition.
Assessing university students' perception of academic quality using machine learning
Authors: Guillén Perales Alberto , Liébana-Cabanillas Francisco , Sánchez-Fernández Juan , Herrera Luis Javier 
Published: October 2020

PurposeThe aim of this research is to assess the influence of the underlying service quality variable, usually related to university students' perception of the educational experience. Another aspect analysed in this work is the development of a procedure to determine which variables are more significant to assess students' satisfaction.Design/methodology/approachIn order to achieve both goals, a twofold methodology was approached. In the first phase of research, an assessment of the service quality was performed with data gathered from 580 students in a process involving the adaptation of the SERVQUAL scale through a multi-objective optimization methodology. In the second phase of research, results obtained from students were compared with those obtained from the teaching staff at the university.FindingsResults from the analysis revealed the most significant service quality dimensions from the students' viewpoint according to the scores that they provided. Comparison of the results with the teaching staff showed noticeable differences when assessing academic quality.Originality/valueSignificant conclusions can be drawn from the theoretical review of the empirical evidences obtained through this study helping with the practical design and implementation of quality strategies in higher education especially in regard to university education.
A bibliometric investigation of service failure literature and a research agenda
Authors: Fouroudi Pantea , Kitchen Philip J. , Marvi Reza , Akarsu Tugra Nazli , Uddin Helal 
Published: October 2020

Purpose
This paper aims to study the citations made in service failure literature and assesses the knowledge construction of this region of exploration to date.

Design/methodology/approach
The bibliometric investigation assesses 416 service failure articles in business associated research. Multidimensional scaling is used to uncover the scope of the scholarly impacts that have helped understand the nature of the service failure literature. The establishment of knowledge in the service failure literature is revealed by analysing co-citation data to identify significant topical impacts.

Findings
The theoretical model combines five areas with significant propositions for the future improvement of service failure as an area of investigation. The most important research themes in service failure literature are service failure, service failure communication, recovery process, recovery offer and intention.

Research limitations/implications
Potential research concentrating on the service failure literature could use search terms improved from the literature review, or use a comparable approach whereby a board of well-informed scholars approved the key words used.

Practical implications
This paper is beneficial for any reader who is interested in understanding the components of the perception of justice and recovery and how it improves repurchase intention.

Originality/value
The study seeks to influence resource and recovery-based concepts and utilises the five supporting knowledge groups to suggest a plan for future research that fills existing gaps and offers the possibility of expanding and enhancing the service failure literature.
LPG consumption and economic growth, 1975-2016: evidence from Cameroon
Authors: Tamba Jean Gaston 
Published: October 2020

PurposeThis paper aims to examine the causal relationship between liquefied petroleum gas consumption and economic growth in Cameroon over the period from 1975 to 2016.Design/methodology/approachThe methodology of this study is based on the unit root, cointegration and causality tests. Cointegration is performed with both Johansen and autoregressive distributed lag bounds approach, while causality is done with the Granger test based on the error correction model (ECM) and Toda-Yamamoto procedure.FindingsThe cointegration methods confirm the existence of a level relationship, whereas the causal tests of the ECM reveal the existence of a short-run unidirectional causal relationship ranging from liquefied petroleum gas (LPG) consumption to economic growth and a bidirectional causal relationship between long-term and high-causality variables. With the Toda-Yamamoto procedure, unidirectional causality is found to run from economic growth to liquefied petroleum gas consumption.Research limitations/implicationsThese findings imply that an increase in liquefied petroleum gas consumption leads to an increase in economic growth. As a result, supporting energy efficiency policies that aim to reduce liquefied petroleum gas consumption is not an option for Cameroon. Given that LPG consumption shares are still low in Cameroon, the government ought, thus, to increase LPG subsidization, vulgarize and favor policies aimed at encouraging LPG consumption to increase LPG deposits nationwide. This would help increase LPG consumption and consequently could increase economic growth in Cameroon.Originality/valueLPG is a fossil fuel and is the less GHG emitter and it is considered as a modern source of energy for cooking in Cameroon households. It scarcity calls on energy policymakers to question the influence LPG consumption could have on economic growth in the short- and long-run. Thus, this paper could contribute to solving the issue of deforestation in Cameroon, especially in the Sahel zone; through the substitution of firewood consumption by LPG consumption in households.
Panel data comparative analysis on the influence of population age structure on the size of government expenditure in Africa and Asia
Authors: Azolibe Chukwuebuka Bernard 
Published: October 2020

PurposeAfrica and Asia are the two most populous continents in the world and are projected to increase further in the near future and this puts the governments under great stress in terms of increased public expenditure and dealing with a low revenue generation. Thus, the purpose of this study is to assess the influence of population age structure on the size of government expenditure in Africa and Asia covering the period 1990–2018.Design/methodology/approachThe study employed panel fully modified ordinary least squares (FMOLS) estimation in estimating the relevant relationship between the variables in the model.FindingsThe key findings revealed that the major population age structures that influence the size of government expenditure in Africa are population aged 0–14 years and population aged 15–64 years, while that of Asia are population aged 15–64 years and population aged 65 years and above. The findings provided strong support for the Population Reference Bureau report (2019) that countries in Africa are home to some of the world's youngest population, that is, those aged 15 years or below, while Asia is home to some of the world's oldest population, that is, those aged 65 years and above.Research limitations/implicationsWhile generalized method of moments (GMM) estimation is beneficial in the presence of endogeneity, it is only designed for situations with a small time period (T) and a large number of cross sections (N). Hence, the estimation technique was limited only to FMOLS as the number of the cross sections or countries which is ten for Africa and ten for Asia is lower than the time period which is 29 years (1990–2018).Originality/valueEmpirical literature investigating the influence of population age structure on the size of government expenditure has focussed mainly on one aspect of the population age structure and government expenditure, which is the influence of ageing population on government expenditure on health. Hence, this study focussed on assessing the influence of population age structure on the size of government expenditure. The study is unique as it compared the two most populous continents in the world, which are Africa and Asia to determine which of the population age structures have the most significant influence on the size of government expenditure.
State of the art on geopolymer concrete
Authors: Ralli Zoi G. , Pantazopoulou Stavroula J. 
Published: October 2020

PurposeImportant differentiating attributes in the procedures used, the characteristic mineral composition of the binders, and the implications these have on the final long term stability and physico-mechanical performance of the concretes produced are identified and discussed, with the intent to improve transparency and clarity in the field of geopolymer concrete technologies.Design/methodology/approachThis state-of-the-art review covers the area of geopolymer concrete, a class of sustainable construction materials that use a variety of alternative powders in lieu of cement for composing concrete, most being a combination of industrial by-products and natural resources rich in specific required minerals. It explores extensively the available essential materials for geopolymer concrete and provides a deeper understanding of its underlying chemical mechanisms.FindingsThis is a state-of-the-art review introducing the essential characteristics of alternative powders used in geopolymer binders and the effectiveness these have on material performance.Practical implicationsWith the increase of need for alternative cementitious materials, identifying and understanding the critical material components and the effect they may have on the performance of the resulting mixes in fresh as well as hardened state become a critical requirement to for short- and long-term quality control (e.g. flash setting, efflorescence, etc.).Originality/valueThe topic explored is significant in the field of sustainable concrete technologies where there are several parallel but distinct material technologies being developed, such as geopolymer concrete and alkali-activated concrete. Behavioral aspects and results are not directly transferable between the two fields of cementitious materials development, and these differences are explored and detailed in the present study.
Mobilizing resources in product development by organizational interfaces across firms, units and functions
Authors: Sundquist Viktoria , Melander Lisa 
Published: October 2020

Purpose
This paper aims to investigate how various organizational interfaces between firms, units and functions, and the interplay between them, are developed and mobilized in product development processes.

Design/methodology/approach
The theoretical framework is based on the industrial network approach, including interactive resource development and the concept of organizational interfaces. A single case study is conducted at a world-leading industrial tool manufacturer, illustrating how resources are combined over time, crossing boundaries of firms, units and functions in the development of a hand-held digitalized tool for quality assurance in the production of cars. Data have been collected through semi-structured interviews, with additional data in the form of project reports, internal documents and practices for external collaboration.

Findings
In addition to inter-organizational interfaces, the study identifies a typology of scouting, embarking and integration interfaces at unit level (geographically spread units of one multinational corporation) and interpretation and reciprocal interfaces at function level. The conclusions show that these interfaces affect the outcome of three aspects of the product development process: product characteristics and functionality features, system integration and organizational network extent. Existing interfaces serve as a platform for developing interaction further and provide the interfaces with new content, thus moving between different types of interfaces. Product development processes also involve new interfaces where there was no previous interaction between the parties.

Research limitations/implications
This research has implications for the interplay between interfaces in cases involving multiple external and internal actors in resource combining efforts.

Practical implications
External interactions between firms influence and impact internal activities and resources. Managers need to be aware of the complex interdependencies between external and internal interfaces and resources. Managing organizational interfaces is about both exploiting established interfaces and developing new ones. Consequently, existing interfaces may be activated differently to align with new interaction purposes, which, in turn, requires efforts to combine resources according to the new conditions.

Originality/value
Previous research contains a typology of organizational interfaces between customers and suppliers. The study expands on this research by identifying internal interfaces between units and functions.
Identifying territory-linked family business groups: a methodological proposal
Authors: Garmendia-Lazcano Aitor , Iturrioz-Landart Cristina , Aragon-Amonarriz Cristina 
Published: October 2020

PurposeThe purpose of this paper is to design a methodology to identify territory-linked family business groups (TLFBGs) in order to overcome the methodological challenges and ease studies about family business groups' (FBGs) impact on territories.Design/methodology/approachThe paper applied an algorithm to a data set of firms located in Gipuzkoa that were registered in the SABI database in 2018.FindingsThe paper defined a new construct, TLFBGs, and proposed a methodology that automatized the identification of TLFBGs by a seven-stage algorithm that was intended to be applicable to any firm-level economic and financial data set, including all registered firms and not only listed firms.Practical implicationsTLFBGs unveil the real relevance that family businesses have in the territorial development, encouraging the political support to family business. Additionally, the methodology provided allows understanding growth processes of family business.Originality/valueThe paper defines a new construct, TLFBGs, that highlights both the underexplored links existing between family and territory and between family and business groups, providing the process and criteria to capture it. The paper opens up large-scale empirical research on the social (and economic) influence of TLFBGs in territorial development.
Person-centred care in Northern Ireland: learning from the experiences of adult social care users
Authors: Chapman Alexandra 
Published: October 2020

PurposeThe move towards a “person-centred” or “personalised” system of adult social care has been at the heart of policy debates in Great Britain. However, policy developments in Northern Ireland are more limited than in other parts of the UK, and less attention has been paid to reforming adult social care. The purpose of this paper is to examine the views and experiences of adult social care users who receive care at home, to explore if and how a person-centred approach might work for older adults in Northern Ireland.Design/methodology/approachUsing a qualitative approach, semi-structured interviews were carried out with 12 people aged over 70 years who receive social care provision at home.FindingsThe empirical findings show that social care users experienced limited involvement in their care planning process, reflecting a predominantly service-led approach. The importance of care worker continuity and consistency was crucial for all participants, particularly for maintaining discreet routines and promoting personal dignity. However many experienced different care workers which presented challenges caused by the inconsistency of carers.Research limitations/implicationsThe majority of participants in the study were women, despite attempts to achieve greater gender diversity. It was also difficult to recruit a range of ethnic groups for the study. It would be important for future studies to include these groups and to ensure their voices are represented in further work in this area. Nonetheless, the findings offer valuable insight into the views of adult social care users and can form a useful basis for future studies.Originality/valueThe findings provide a more nuanced understanding of what people want and expect in social care to generate future policy debates and discussions in planning long-term adult social care provision in Northern Ireland. It also provides important and timely contribution to this area, where there is currently limited research and information available.
Finding the nexus between green supply chain practices and sustainable business advantage: an emerging market perspective
Authors: Amoako George Kofi , Bonsu Gifty Agyeiwah , Caesar Livingstone Divine , Osei-Tete Freeman 
Published: October 2020

PurposeThe purpose of this conceptual paper is to explore the connection between green supply chain practices (GSCPs) and sustained business advantage from an emerging market perspective. Research on the phenomenon is limited in developing countries where green supply chain (GSC) concepts are now increasingly gaining ground. The study also attempts a general literature review to examine the mediating role of effective environmental benchmarking and leadership factors on the relationship. It further provides insight on the moderating effect of constructs such as people involvement and customer preferences.Design/methodology/approachSeparate searches were conducted in key academic databases such as Emerald Online Journals, Taylor and Francis Online Journals, JSTOR Online Journals and Elsevier Online Journals. Also, version 7 of the Publish or Perish software was used to search for paper focused on GSCPs and sustainability. In total, 19 articles met the predefined criteria and were used.FindingsThe results from the synthesis of the reviewed literature shows that despite the fact that leadership factors mediates the positive relationship between GSCPs and sustained business advantage, research on supply chain (SC) leadership as a construct is limited and requires further empirical research.Research limitations/implicationsSome limitations must be considered and could provide guidance for future study; this study did not collect data to test the proposed model. Moreover the study hypotheses proposed need to be tested to validate the model proposed.Practical implicationsThis research by promoting an understanding of how GSCPs impacts the activities of buying and supply organizations in emerging markets. Findings on the leadership factors and people involvement constructs will assist SC operators in emerging markets to tap the tremendous potential inherent in participatory SC approaches to remain competitive and acquire sustained business advantage.Originality/valueThe study offers opportunity for empirical testing of the mediating (effective environmental benchmarking and leadership factors) and moderating (people involvement and customer preferences) variables in an emerging market context as this could provide fresh insights on the complexity of the relationships.