bluuebunny/crossref_metadata_2025 huggingface dataset:
Cold-induced Suspension and Resetting of Ca2+ and Transcriptional Rhythms in the Suprachiasmatic Nucleus Neurons
Authors: Enoki Ryosuke , Kon Naohiro , Shimizu Kimiko , Kobayashi Kenta , Yamaguchi Yoshifumi , Tomomi Nemoto
Published: September 2022

Mammalian circadian rhythms are coordinated by the master clock located in the hypothalamic suprachiasmatic nucleus (SCN). Under severe environmental conditions, such as during the harsh winter season for food, certain mammalian species reduce their basal metabolism and thermogenesis, thereby undergoing torpor, a controlled state of hypothermia, which naturally returns to the normothermic state. A long-lasting debate focused on whether the SCN with a temperature-compensated clock remains functional during hypothermia. However, so far, no direct and quantitative evidence has been reported of temperature sensitivity in living SCN neurons.

In this study, we performed dual-color fluorescence imaging of clock gene transcriptions and intracellular Ca2+ in mouse SCN neurons, using slices at various temperatures. We demonstrated that the Bmal1 transcription and Ca2+ circadian rhythms persisted at 22°C–28°C, although the two rhythms underwent temporal dissociation at 22 °C. Notably, Ca2+, Bmal1, and Per2 rhythms were suspended at 15°C, coupled with a significant Ca2+ increase, and all rhythms were reset by rewarming to 35°C. Upon rewarming, the Ca2+ rhythm showed stable oscillations immediately, whereas the Bmal1 and Per2 rhythms took several days to reach stable oscillations and recover their phase relationship with the Ca2+ rhythm.

Taken together, we concluded that SCN neurons remain functional under moderate hypothermic conditions at approximately 22°C–28°C but stop ticking time in deep hypothermia at 15°C and that the rhythms reset after deep hypothermia. These data also indicate that the stable Ca2+ oscillation precedes clock gene transcriptional rhythms in the SCN neurons.
Higher-order dialectic variation and syntactic convergence in the complex warble song of budgerigars
Authors: Madabhushi Abhinava Jagan , Wewhare Nakul , Binwal Priya , Krishnan Anand
Published: September 2022

Dialectic signatures in animal acoustic signals are key in identification and association with group members. Complex vocal sequences may also convey information about behavioral state, and may thus vary according to social environment. Many bird species learn and modify their complex acoustic signals throughout their lives. However, the structure and function of vocal sequences in perennial vocal learners remains understudied. Here, we examined vocal sequence variation in the warble song of budgerigars, and how these change upon contact between social groups. Budgerigars are perennial vocal learners which exhibit fission-fusion flock dynamics in the wild. We found that two captive colonies of budgerigars exhibited colony-specific differences in the syntactic structure of their vocal sequences. Individuals from the two colonies differed in the propensity to repeat certain note types, forming repetitive motifs which served as higher-order signatures of colony identity. When the two groups were brought into contact, their vocal sequences converged within months of contact, and these colony-specific repetitive patterns disappeared, with males from both erstwhile colonies now producing similar sequences with similar syntactic structure. Our data suggests that budgerigars can encode substantial information in the higher-order temporal arrangement of notes/vocal units, which is modified throughout life by social learning as groups of birds continually associate and dissociate. Our study sheds light on the importance of examining signal structure at multiple levels of organisation, and the potential for psittaciform birds as model systems to examine the influence of learning and social environment on acoustic signals.
Brain transcriptome of gobies inhabiting natural CO2 seeps reveal acclimation strategies to long-term acidification
Authors: Suresh Sneha , Mirasole Alice , Ravasi Timothy , Vizzini Salvatrice , Schunter Celia
Published: September 2022

Ocean acidification (OA) is known to affect the physiology, survival, behaviour, and fitness of various fish species with repercussions at the population, community, and ecosystem levels. Some fish species, however, seem to acclimate rapidly to OA conditions and even thrive in acidified environments. The molecular mechanisms that enable species to successfully inhabit high CO2environments has not been fully elucidated especially in wild fish populations. Here, we used the natural CO2seep in Vulcano Island, Italy to study the effects of elevated CO2exposure on the brain transcriptome of the anemone goby, a species with high population density in the CO2seep and investigate their potential for acclimation. When compared to fish from environments with ambient CO2, gobies living in the CO2seep showed differences in expression of transcripts involved in ion transport and pH homeostasis, cellular stress, immune response, circadian rhythm, and metabolism. We also found evidence of potential adaptive mechanisms to restore the functioning of GABAergic pathways, whose activity can be affected by exposure to elevated CO2levels. Our findings indicate that gobies living in the CO2seep may be capable of mitigating CO2induced oxidative stress and maintaining physiological pH while meeting the consequent increased energetic costs. The conspicuous difference in expression of core circadian rhythm transcripts could provide an adaptive advantage by increasing flexibility of physiological processes in elevated CO2conditions thereby facilitating acclimation. Our results show potential molecular processes of acclimation to elevated CO2in gobies enabling them to thrive in the acidified waters of Vulcano Island.
B cell receptor induced IL-10 production from neonatal CD19+CD43- cells depends on STAT5 mediated IL-6 secretion
Authors: Sakai Jiro , Yang Jiyeon , Chou Chao-Kai , Wu Wells W. , Akkoyunlu Mustafa
Published: September 2022

Newborns are unable to reach the adult-level humoral immune response partly due to the potent immunoregulatory role of IL-10. Increased IL-10 production by neonatal B cells has been attributed to the larger population of IL-10-producting CD43+B-1 cells in neonates. Here, we show that neonatal CD43-non-B-1 cells also produce substantial amounts of IL-10 following B cell antigen receptor (BCR) activation. In neonatal CD43-non-B-1 cells, BCR engagement activated STAT5 under the control of phosphorylated forms of signaling molecules Syk, Btk, PKC, FAK and Rac1. STAT5 activation led to IL-6 production, which in turn was responsible for IL-10 production in an autocrine/paracrine fashion through the activation of STAT3. In addition to the increased IL-6 production in response to BCR stimulation, elevated expression of IL-6Rα expression in neonatal B cells rendered them highly susceptible to IL-6 mediated STAT3 phosphorylation and IL-10 production. Finally, IL-10 secreted from neonatal CD43-non-B-1 cells was sufficient to inhibit TNF-α secretion by macrophages. Our results unveil a distinct mechanism of IL-6-dependent IL-10 production in BCR-stimulated neonatal CD19+CD43-B cells.
Inositol pyrophosphate profiling reveals regulatory roles of IP6K2-dependent enhanced IP7 metabolism in enteric nervous system
Authors: Ito Masatoshi , Fujii Natsuko , Kohara Saori , Hori Shuho , Tanaka Masayuki , Wittwer Christopher , Kikuchi Kenta , Iijima Takatoshi , Kakimoto Yu , Hirabayashi Kenichi , Kurotaki Daisuke , Jessen Henning J. , Saiardi Adolfo , Nagata Eiichiro
Published: September 2022

Inositol pyrophosphates (PP-IPs) regulate diverse physiological processes; to better understand their functional roles, assessing their tissue-specific distribution is important. Here, we profiled PP-IP levels in mammalian organs using a novel HILIC-MS/MS protocol and discovered that the gastrointestinal tract (GIT) contained the highest levels of IP7 and its precursor IP6. Although their absolute levels in the GIT is diet-dependent, elevated IP7 metabolism still exists under dietary regimes devoid of exogenous IP7. Of the major GIT cells, enteric neurons selectively express the IP7-synthesizing enzyme IP6K2. IP6K2-knockout mice exhibited significantly impaired IP7 metabolism in the various organs including the proximal GIT. Additionally, HILIC-MS/MS analysis displayed that genetic ablation of IP6K2 significantly impaired IP7 metabolism in the gut and duodenal muscularis externa containing myenteric plexus. Whole transcriptome analysis of duodenal muscularis externa further suggested that IP6K2 inhibition induced the gene sets associated with mature neurons such as inhibitory, GABAergic and dopaminergic neurons, concomitantly with suppression of those for neural progenitor/stem cells and glial cells. In addition, IP6K2 inhibition explicitly affected transcript levels of certain genes modulating neuronal differentiation and functioning, implying critical roles of IP6K2-IP7 axis in developmental and functional regulation of enteric nervous system. These results collectively reveal an unexpected role of mammalian IP7—a highly active IP6K2-IP7 pathway is conducive to enteric nervous system.
Deep Learning Architectures For the Prediction of YY1-Mediated Chromatin Loops
Authors: Fazeel Ahtisham , Asim Muhammad Nabeel , Trygg Johan , Dengel Andreas , Ahmed Sheraz
Published: September 2022

YY1-mediated chromatin loops play substantial roles in basic biological processes like gene regulation, cell differentiation, and DNA replication. YY1-mediated chromatin loop prediction is important to understand diverse types of biological processes which may lead to the development of new therapeutics for neurological disorders and cancers. Existing deep learning predictors are capable to predict YY1-mediated chromatin loops in two different cell lines however, they showed limited performance for the prediction of YY1-mediated loops in the same cell lines and suffer significant performance deterioration in cross cell line setting. To provide computational predictors capable of performing large-scale analyses of YY1-mediated loop prediction across multiple cell lines, this paper presents two novel deep learning predictors. The two proposed predictors make use of Word2vec, one hot encoding for sequence representation and long short-term memory, and a convolution neural network along with a gradient flow strategy similar to DenseNet architectures. Both of the predictors are evaluated on two different benchmark datasets of two cell lines HCT116 and K562. Overall the proposed predictors outperform existing DEEPYY1 predictor with an average maximum margin of 4.65%, 7.45% in terms of AUROC, and accuracy, across both of the datases over the independent test sets and 5.1%, 3.2% over 5-fold validation. In terms of cross-cell evaluation, the proposed predictors boast maximum performance enhancements of up to 9.5% and 27.1% in terms of AUROC over HCT116 and K562 datasets.
In-Depth Characterization of Apoptosis N-terminome Reveals a Link Between Caspase-3 Cleavage and Post-Translational N-terminal Acetylation
Authors: Hanna Rawad , Rozenberg Andrey , Saied Layla , Ben-Yosef Daniel , Lavy Tali , Kleifeld Oded
Published: September 2022

The N-termini of proteins contain information about their biochemical properties and functions. These N-termini can be processed by proteases and can undergo other co- or post-translational modifications. We have developed LATE (LysN Amino Terminal Enrichment), a method that uses selective chemical derivatization of α-amines to isolate the N-terminal peptides, in order to improve N-terminome identification in conjunction with other enrichment strategies. We applied LATE alongside another N-terminomic method to study caspase-3 mediated proteolysis bothin vitroand during apoptosis in cells. This has enabled us to identify many unreported caspase-3 cleavages, some of which cannot be identified by other methods. Moreover, we have found direct evidence that neo-N-termini generated by caspase-3 cleavage can be further modified by Nt-acetylation. Some of these neo-Nt-acetylation events occur in the early phase of the apoptotic process and may have a role in translation inhibition. This has provided a comprehensive overview of the caspase-3 degradome and has uncovered previously unrecognized crosstalk between post-translational Nt-acetylation and caspase proteolytic pathways.
Insights from CRISPR/Cas9-mediated gene editing of centromeric histone H3 (CENH3) in carrot (Daucus carotasubsp.sativus)
Authors: Dunemann Frank , Krüger Antje , Maier Kerstin , Struckmeyer Sabine
Published: September 2022

The generation of haploids is one of the most powerful means to accelerate the plant breeding process. In most crop species, an efficient haploid technology is not yet available or only applicable to a limited set of genotypes. Recent results published forArabidopsis thalianaand major cereal crops like maize and wheat about successful haploid induction by CRISPR/Cas9-mediated editing of the centromeric histone H3 gene (CENH3) suggest that this novel method for the production of haploid plants might also be applicable to vegetable species like carrot. Here, we report and summarize the different experimental and genetic approaches that have been focused in the past few years on CRISPR/Cas9-based editing of the carrot CENH3 gene. We also describe the discovery of a second CENH3 locus in the carrot genome, which complicates the attempts to generate and to analyse putative haploid inducer genotypes. We show that three different CRISPR/Cas9 target constructs, used alone or in combinations, could successfully target carrot CENH3. Promising mutants such as in-frame indel or in-frame deletion mutants have been found, but their successful usage as putative haploid inducer is uncertain yet. Next generation sequencing of amplicons spanning CRISPR target sites and transcript-based amplicon sequencing seemed to be appropriate methods to select promising mutants, to estimate mutation frequencies, and to allow a first prediction which gene was concerned. Another aim of this study was the simultaneous knockout and complementation of the endogenous carrot CENH3 gene by an alien CENH3 gene. Co-transformation of a CRISPR/Cas9-based carrot CENH3 knockout construct together with a CENH3 gene cloned from ginseng (Panax ginseng) was performed by usingRhizobium rhizogenes. It was shown, that ginseng CENH3 protein is accumulated inside the kinetochore region of carrot chromosomes, indicating thatPgCENH3might be a suited candidate for this approach. However, presently it is unclear, if this gene is fully functioning during the meiotic cell divisions and able to complement lethal gametes. Challenges and future prospects to develop a CENH3-based HI system for carrot are discussed.
Deciphering the genetic structure of the Quebec founder population using genealogies
Authors: Gagnon Laurence , Moreau Claudia , Laprise Catherine , Vézina Hélène , Girard Simon L.
Published: September 2022

Using genealogy to study the demographic history of a population makes it possible to overcome the models and assumptions often used in population genetics. The Quebec founder population is one of the few populations in the World having access to the complete genealogy of the last 400 years. The goal of this paper is to follow the evolution of the Quebec population structure generation per generation from the beginning of European colonization until the present day. To do so, we calculated the kinship coefficients of all ancestors’ pairs in the ascending genealogy of 665 individuals from eight regional and ethnocultural groups per 25-year period. We show that the Quebec population structure appeared in the St. Lawrence valley as early as 1750. At that time, the ancestors of two groups, the Sagueneans and the Acadians from the Gaspé Peninsula, experienced a marked increase in kinship and inbreeding levels which have shaped the contemporary population structure. Interestingly, this structure arose before the colonization of the Saguenay region and at the very beginning of the Gaspé Peninsula settlement. The resulting regional founder effects in these two groups, but also in the other regional groups, led to differences in the present-day identity-by-descent sharing and are directly linked to the number of most recent common ancestors and their genetic contribution to the studied subjects.
Revealing the structure of somatic cell membranes by in situ cryo-electron tomography
Authors: Liu Chao , Zhou Yiting , Zou Tianyi , Zhao Guanfang , Zhang Jinrui , Wang Huili , Wang Hongda
Published: September 2022

The cell membrane, which separates the cell from the environment, plays a key role in signal transduction, energy conversion and substance transport. Although previous membrane models have successfully interpreted some functions of the cell membrane, no consensus has been reached for the lack of direct and in situ evidence. Here, we characterized the high-resolution 3D structure of 293T cell membranes in situ for the first time by cryo-electron tomography. Due to the excellent thickness of our cryo-samples, we could clearly observe membrane proteins with an average molecular weight of 100 kD. By analysing tomograms, we found that the total thickness of a 293T plasma membrane is approximately 20 nm and that there is a 4-nm lipid bilayer structure within the membrane. We observed that membrane proteins and protein complexes with a similar height (7-11 nm) are densely embedded in the ectoplasmic side of 293T plasma membranes, whereas membrane proteins aggregate to form islands with heights reaching dozens of nanometres on the cytoplasmic side. Additionally, we measured the average sizes of membrane proteins on the cytoplasmic side of 293T plasma membranes and found them to be approximately 7 nm in length and 4 nm in width. Moreover, if more precise structural information is obtained in future studies, we will identify the molecular interactions and detailed structures of membrane protein clusters that can be easily distinguished on a 293T cell membrane. Our work represents the first in situ structural characterization of a native somatic cell membrane with cryo-electron tomography and advances cell membrane structural studies from the model prediction stage to the real structure observation stage.
Functional analysis of V2 protein of Beet curly top Iran virus
Authors: Bahari Atiyeh , Garriga Araceli Castillo , Safaie Naser , Bejarano Eduardo Rodriguez , Luna Ana Isabel Perez , Shams-Bakhsh Masoud
Published: September 2022

The geminivirus beet curly top Iran virus (BCTIV) is one of the main causal agents of the beet curly top disease in Iran and the newly established Becurtovirus genus type species. Although the biological features of known becurtoviruses are similar to those of curtoviruses, they only share a limited sequence identity, and no information is available on the function of their viral genes. In this work, we demonstrate that BCTIV V2, as the curtoviral V2, is also a strong local silencing suppressor in Nicotiana benthamiana and can delay the systemic silencing spreading, although it cannot block the cell-to-cell movement of the silencing signal to adjacent cells. BCTIV V2 shows the same subcellular localization as curtoviral V2, being detected in the nucleus and perinuclear region, and its ectopic expression from a PVX-derived vector also causes the induction of necrotic lesions in N. benthamiana like the ones produced during the HR, both at local and systemic levels. The results from the infection of N. benthamiana with a V2 BCTIV mutant showed that V2 is required for systemic infection but not for viral replication in a local infection. Considering all these results, we can conclude that BCTIV V2 is a functional homologue of curtoviral V2 and plays a crucial role in viral pathogenicity and systemic movement.
Body condition score and triglyceride concentrations and their associations with other markers of energy homeostasis in healthy, non-obese dogs
Authors: Gomez-Fernandez-Blanco Carlos , Peeters Dominique , Farnir Frédéric , Höglund Katja , Gouni Vassiliki , Wiberg Maria , Willesen Jakob Lundgren , Hanås Sofia , McEntee Kathleen , Tiret Laurent , Häggström Jens , Lohi Hannes , Chetboul Valérie , Fredholm Merete , Seppälä Eija , Lequarré Anne-Sophie , German Alexander James , Merveille Anne-Christine
Published: September 2022

Serum triglyceride concentrations increase in dogs in overweight condition, which is typically assessed by body condition score (BCS). However, their associations with other markers of energy homeostasis are poorly characterized. The present study aimed to evaluate the associations between both BCS and triglyceride levels and other markers of lipid and glucose metabolism in healthy dogs in overweight condition. 534 overweight, but otherwise healthy, client-owned dogs were included. Serum concentrations of cholesterol, free fatty acids, triglycerides, insulin, glucose and fructosamine were measured. Dogs were assigned to lean (BCS: 3-5) or overweight (BCS: 6-7) categories, and linear models were used to assess the differences between BCS categories and the associations between triglycerides and the other variables, correcting for the effect of breed. Globally, “overweight” dogs had greater serum cholesterol (95% CI: 5.3-6.2 mmol/L or 205-237 mg/dL versus 5.1-5.4 mmol/L or 198-210 mg/dl, P = .003), insulin (95% CI: 17.5-22.1 μU/ml versus 16.7-18.0 μU/ml, P = .036) and were older (95% CI: 4.0-5.3 versus 3.4-3.7 years, P = .002) than lean dogs. Triglyceride concentrations were positively associated with fructosamine (r2 = 0.31, P = .001), cholesterol (r2 = 0.25, P < .001), insulin (r2 = 0.14, P = .003) and glucose (r2 = 0.10, P = .002), and negatively associated with free fatty acids (r2 = 0.11, P < .001). There was no association between triglyceride levels and age. In conclusion, both BCS and triglyceride concentrations were associated with other markers of glucose and lipid metabolism in overweight, but otherwise healthy dogs. Triglyceride concentrations were associated with an increase in insulin and fructosamine that might reflect an early-phase impairment in glucose tolerance which, surprisingly, was concurrent with lower basal free fatty acids.
Global assessment of the COVID-19 impact on IFRS 9 loan loss provisions
Authors: Engelmann Bernd , Lam Nguyen Thi Thanh
Published: September 2022

Purpose

This article aims to analyze the impact of COVID-19 measures by governments and central banks on International Financial Reporting Standards (IFRS) 9 loan loss provisions (LLPs). Changes in the total amount of LLPs, distribution of outstanding loan balance among IFRS 9 stages and credit risk parameters used for calculation are investigated for each world region where banks report under IFRS.

Design/methodology/approach

Data for a global selection of 105 banks reporting under IFRS were collected from 2019 to 2020 annual reports, financial statements, and Pillar III reports. These data provide the basis to empirically analyze the impact of COVID-19 on LLPs.

Findings

In most world regions Stage 2 balances increase while Stage 3 balances remain comparatively stable. The credit risk parameters used for computing LLPs remained stable in 2020. However, in China, the impact of COVID-19 on banks was not detected. Mean Stage 1 balances for Chinese banks increased slightly during the pandemic. Aside from the COVID-19 impact, we find that LLPs, credit risk parameters, and loss absorption capacities are significantly lower for banks in Canada, Oceania and Western Europe compared to those in the rest of the world.

Originality/value

There exists previous research examining the COVID-19 impact on financial stability, implementation of emergency rules and country-wide analyses to anticipate default rates depending on recovery scenarios. However, this is the first global study on the immediate impact of COVID-19 on LLPs. It reveals the significant differences between world regions and provides implications about their resilience against future credit shocks.
Managing systemic risk in emergency management, organizational resilience and climate change adaptation
Authors: Pescaroli Gianluca , Guida Kristen , Reynolds Jeremy , Pulwarty Roger S. , Linkov Igor , Alexander David E.
Published: September 2022

Purpose

This paper applies the theory of cascading, interconnected and compound risk to the practice of preparing for, managing, and responding to threats and hazards. Our goal is to propose a consistent approach for managing major risk in urban systems by bringing together emergency management, organisational resilience, and climate change adaptation.

Design/methodology/approach

We develop a theory-building process using an example from the work of the Greater London Authority in the United Kingdom. First, we explore how emergency management approaches systemic risk, including examples from of exercises, contingency plans and responses to complex incidents. Secondly, we analyse how systemic risk is integrated into strategies and practices of climate change adaptation. Thirdly, we consider organisational resilience as a cross cutting element between the approaches.

Findings

London has long been a champion of resilience strategies for dealing with systemic risk. However, this paper highlights a potential for integrating better the understanding of common points of failure in society and organisations, especially where they relate to interconnected domains and where they are driven by climate change.

Originality/value

The paper suggests shifting toward the concept of operational continuity to address systemic risk and gaps between Emergency Management, Organizational Resilience and Climate Change Adaptation.
Role of smart technology use behaviour in enhancing tourist revisit intention: the theory of planned behaviour perspective
Authors: Zheng Kundan , Kumar Jeetesh , Kunasekaran Puvaneswaran , Valeri Marco
Published: September 2022

Purpose

This study examines the influencing factors of smart technology use behaviour (STUB), influencing tourist satisfaction and enhancing revisit intention for the Chinese tourism destination. Further, the moderating role of place attachment on the relationship between STUB, tourist satisfaction and revisit intention has been examined.

Design/methodology/approach

The study employs quantitative methodology by incorporating the planned behaviour theory to develop the hypotheses. Using an online survey link, 409 responses were collected from the tourists employing a non-probability convenience random sampling technique.

Findings

The partial least squire-structural equation modelling (PLS-SEM) results show that social influence significantly affects STUB, tourist satisfaction and revisit intention. Also, the anticipated positive behaviour has positive and significantly affects STUB and revisit intention. Finally, the findings show that tourist satisfaction significantly affects revisit intention in the tourist destinations in China.

Research limitations/implications

A quantitative research design was applied, employing a random sampling technique, and surveys were conducted with tourists only in current research. However, future research can incorporate a wide range of methodology by collecting data from other tourism stakeholders to have an in-depth evaluation of repeat visitation behaviour. Future research can enhance the current conceptual framework by including other relevant variables like negative anticipated emotions at other locations, as the current study was conducted in the Chinese context.

Originality/value

This research adds value to the tourism destination to formulate tourist satisfaction and revisit intention. Implications are provided for a more nuanced understanding and effective planning in tourism destinations while considering smart technology use.
The impact of board characteristics on the extent of earnings management: conditional evidence from quantile regressions
Authors: Usman Muhammad , Nwachukwu Jacinta , Ezeani Ernest
Published: September 2022

Purpose

This paper aims to examine the impact of board characteristics on earnings management (EM) among UK non-financial firms.

Design/methodology/approach

Using a sample of the UK Financial Times Stock Exchange 350 firms from 2010 till 2019, the authors investigated the relationship between board characteristics (board size, board gender diversity, board tenure, board independence, chief executive office-duality and board meetings) and EM by using the quantile regression technique.

Findings

This study found a non-linear association between board characteristics and discretionary accrual. The empirical evidence showed that board mechanisms reduce the extent of earnings manipulation among UK firms with higher discretionary accruals (DACC) than firms with low and medium DACC levels.

Research limitations/implications

The results will benefit UK firms by helping them to rethink their board composition. It will also help policymakers understand how the corporate board can help ensure the quality of financial reports.

Originality/value

This study used the quantile regression approach, which helps to clarify the mixed findings of prior studies that used conventional regression techniques.
Mitigating property quality uncertainty and property fit uncertainty in online peer-to-peer accommodation platforms: an uncertainty reduction theory perspective
Authors: Yan Ruihe , Gong Xiang
Published: September 2022

Purpose

Building upon uncertainty reduction theory, this work aims to explore how four uncertainty reduction factors (i.e. online property review, online textual description, online visual description and online instant messenger) mitigate property quality uncertainty and property fit uncertainty, which further influence Airbnb use intention.

Design/methodology/approach

This work tests the proposed research model using a structural equation modeling approach with 335 Airbnb users.

Findings

The findings reveal that the online property review, online textual description, online visual description and online instant messenger can efficiently mitigate property quality uncertainty and property fit uncertainty, which ultimately influence Airbnb use intention.

Research limitations/implications

This study provides useful insights on mitigating property uncertainty in the peer-to-peer (P2P) accommodation platforms. Researchers are encouraged to investigate the boundary conditions that influence the effectiveness of uncertainty reduction strategies in alleviating property uncertainty.

Practical implications

P2P accommodation service providers are suggested to take actionable uncertainty reduction strategies to mitigate property uncertainty in online P2P accommodation platforms.

Originality/value

First, this study advances research on P2P accommodation by identifying two key types of property uncertainty, namely, property quality uncertainty and property fit uncertainty. Second, this study extends research on P2P accommodation by proposing contextualized passive, active and interactive uncertainty reduction strategies in mitigating property uncertainty. Third, this study extends uncertainty reduction theory to the P2P accommodation context. Fourth, this study enriches uncertainty reduction theory by verifying the mediating effects of property quality uncertainty and property fit uncertainty.
Dyslexia-friendly design features for tangible user interfaces: a systematic literature review
Authors: Abdul Aziz Nurul Izzah , Husni Husniza , Hashim Nor Laily
Published: September 2022

Purpose

The aim of this paper is to explore, analyse and summarise the potential tangible user interface (TUI) design features for dyslexics learning to read and spell.

Design/methodology/approach

This study adopts a systematic literature review method through a manual search of published papers from 2011. This systematic literature review consists of three main phases starting with planning the review, conducting the review and studying the selection and reporting the results.

Findings

As the result, 10 papers were found that are considered most applicable as they met the review criteria. Based on the 10 papers, 11 design features are found in the current TUIs design features implemented in the tangible system dedicated for dyslexia and reading. The 11 design features are viewed to be fundamental and useful for the groundwork towards designing and developing a comprehensive TUIs design specifically and exclusively meant for dyslexic children learning to read and spell.

Originality/value

A critical reading of past literature relating to the TUIs concept reveals that this concept still appears to be under-explored even though it was introduced two decades ago. This systematic literature review highlights directions for future research, involving the dyslexic children early in the design process towards the evaluation of the prototype and finally examining the outcome of TUIs on children's learning.
E-grocery logistics: exploring the gap between research and practice
Authors: Seghezzi Arianna , Mangiaracina Riccardo , Tumino Angela
Published: September 2022

Purpose

This paper investigates the logistics management in the e-grocery sector. It contrasts the key issues faced by practitioners and the topics addressed in the academic literature, to identify potential misalignments between research and practice and propose avenues for future efforts.

Design/methodology/approach

This work adopts a twofold methodological approach. From an academic perspective, a systematic literature review (SLR) is performed to define the topics addressed so far by scholars when analysing e-grocery logistics. From a managerial perspective, a Delphi study is accomplished to identify the most significant issues faced by logistics practitioners in the e-grocery context and the associated significance.

Findings

The study develops a conceptual framework, identifying and mapping the 9 main logistics challenges for e-grocery along 4 clusters, in the light of a logistics-related revision of the SCOR model: distribution network design (area to be served, infrastructures), order fulfilment process (picking, order storage, consolidation, delivery), logistics-related choices from other domains (product range, stock-out management) and automation. These elements are discussed along three dimensions: criticalities, basic and advanced/automation-based solutions. Finally, the main gaps are identified – in terms of both under-investigated topics (order storage and stock-out management) and investigated topics needing further research (picking and automation) – and research questions and hypotheses are outlined.

Originality/value

This paper provides a threefold contribution, revolving around the developed framework. First, it investigates the state of the art about e-grocery logistics, classifying the addressed themes. Second, it explores the main issues e-grocery introduces for logistics practitioners. Third, it contrasts the two outcomes, identifying the misalignment between research and practice, and accordingly, proposing research directions.
A secure IoT and edge computing based EV selection model in V2G systems using ant colony optimization algorithm
Authors: Anjinappa Gopinath , Bangalore Prabhakar Divakar
Published: September 2022

Purpose

The fluctuations that occurred between the power requirements have shown a higher range of voltage regulations and frequency. The fluctuations are caused because of substantial changes in the energy dissipation. The operational efficiency has been reduced when the power grid is enabled with the help of electric vehicles (EVs) that were created by the power resources. The model showed an active load matching for regulating the power and there occurred a harmonic motion in energy. The main purpose of the proposed research is to handle the energy sources for stabilization which has increased the reliability and improved the power efficiency. This study or paper aims to elaborate the security and privacy challenges present in the vehicle 2 grid (V2G) network and their impact with grid resilience.

Design/methodology/approach

The smart framework is proposed which works based on Internet of Things and edge computations that managed to perform an effective V2G operation. Thus, an optimum model for scheduling the charge is designed on each EV to maximize the number of users and selecting the best EV using the proposed ant colony optimization (ACO). At the first, the constructive phase of ACO where the ants in the colony generate the feasible solutions. The constructive phase with local search generates an ACO algorithm that uses the heterogeneous colony of ants and finds effectively the best-known solutions widely to overcome the problem.

Findings

The results obtained by the existing in-circuit serial programming-plug-in electric vehicles model in terms of power usage ranged from 0.94 to 0.96 kWh which was lower when compared to the proposed ACO that showed power usage of 0.995 to 0.939 kWh, respectively, with time. The results showed that the energy aware routed with ACO provided feasible routing solutions for the source node that provided the sensor network at its lifetime and security at the time of authentication.

Originality/value

The proposed ACO is aware of energy routing protocol that has been analyzed and compared with the energy utilization with respect to the sensor area network which uses power resources effectively.
Information misbehaviour: modelling the motivations for the creation, acceptance and dissemination of misinformation
Authors: Wilson Thomas D. , Maceviciute Elena
Published: September 2022

Purpose

Misinformation is a significant phenomenon in today's world: the purpose of this paper is to explore the motivations behind the creation and use of misinformation.

Design/methodology/approach

A literature review was undertaken, covering the English and Russian language sources. Content analysis was used to identify the different kinds of motivation relating to the stages of creating and communicating misinformation. The authors applied Schutz's analysis of motivational types.

Findings

The main types of motivation for creating and facilitating misinformation were identified as “in-order-to motivations”, i.e. seeking to bring about some desired state, whereas the motivations for using and, to a significant extent, sharing misinformation were “because” motivations, i.e. rooted in the individual's personal history.

Originality/value

The general model of the motivations underlying misinformation is original as is the application of Schutz's typification of motivations to the different stages in the creation, dissemination and use of misinformation.
Psychological traits and investment decisions: the mediation mechanism of financial management behavior – evidence from the Tanzanian stock market
Authors: Kasoga Pendo Shukrani , Tegambwage Amani Gration
Published: September 2022

Purpose

The purpose of the paper is to examine the financial management behavior (FMB) mediation mechanism in self-control, optimism, deliberative thinking and investment decisions in the Tanzanian stock market.

Design/methodology/approach

A sample of 268 individual investors in the Tanzanian stock market was obtained through questionnaires. The data were analyzed using structural equation modeling.

Findings

The findings show that self-control, optimism and deliberative thinking are significantly and positively related to FMB and investment decisions. The findings also confirmed the mediating role of FMB in the influence of self-control, optimism and deliberative thinking on investment decisions among Tanzanian individual investors. These findings imply that people with good self-control, optimistic and deliberative thinking are more likely to save money, have better FMB and prefer to make investment decisions.

Research limitations/implications

The study deals with individual investors. Future research could examine the effects of psychological traits on investment decisions by adding or modifying the items of particular constructs and studying institutional investors.

Practical implications

Individual investors can use the information to study and evaluate their financial behavior and stock investment decisions. This research can be used by security firms to better understand investor behavior, forecast future market trends and advice investors. Individual investors require psychological features to manage their behavior in various aspects, ranging from affective behavior to cognition, which are relevant for investing decisions.

Originality/value

Few studies have examined the influence of self-control, optimism and deliberative thinking on the investment decisions of individual investors. The unique empirical analysis developed in this paper is that it examines the mediation mechanisms of FMB with respect to self-control, optimism and deliberative thinking and investment decisions among individual investors in the Tanzanian stock market.
“I did not realize that my teacher had taken away part of my identity”: bilingual preservice teachers’ virtual libraries project
Authors: Espinoza Katherine , Kohler Karen
Published: September 2022

Purpose

The purpose of this study is to investigate how participating in a multicultural education course impacted bilingual preservice teachers' (BPSTs) conceptions of identity and how they were able to use their experiential knowledge to create a virtual library based on a variety of topics related to multicultural education.

Design/methodology/approach

This qualitative case study examines the experiences of three BPST candidates within a multicultural education course during the fall 2020 semester. The authors focused on three preservice teachers’ written reflections, interviews and work samples based on a virtual library project.

Findings

The authors describe the critical role BPST preparation programs have in developing coursework that provides opportunities for building a positive self-identity that values life experiences. Such opportunities foster BPSTs’ ability to create lessons that are reflective of identity and diversity inclusive of culture, language, immigration and LGBTQ+.

Originality/value

For some time now, researchers have examined how teacher education programs should include opportunities to interrogate preservice teachers' own experiences in K-12. However, few researchers have directly documented how to connect these experiences to preservice teacher coursework and create classroom resources based on these critical reflections.
It is not equitable if it is not culturally sustaining: teaching and learning in 1:1 laptop schools
Authors: Jackson Iesha , Gonzales Miguel M. , Mensah Adjoa
Published: September 2022

Purpose

The purpose of this study was to examine technological pedagogical content knowledge (TPACK) in 1:1 laptop classrooms. We evaluate how, if at all, teachers in these environments engage culturally sustaining pedagogy (CSP) with technology to meet the needs of culturally and linguistically diverse learners.

Design/methodology/approach

Data for this multiple case study were collected across three middle schools with a 1:1 laptop initiative. Thirteen teachers participated in individual interviews and 77 teachers completed an online survey. Transcribed interviews and the open-ended survey question were analyzed using an inductive, iterative process of coding according to hallmarks of TPACK and CSP.

Findings

This study reveals that while technology could be a powerful tool in fostering an equitable classroom environment, fully implementing equitable approaches in 1:1 laptop schools would require educators to develop knowledge and skills to integrate TPACK and CSP in their classroom.

Originality/value

Our study indicates that obstacles to providing equitable education for CLD learners in 1:1 classrooms are not issues of technology access but issues of disparities perpetuated by missed opportunities to fully engage CSP as a means of challenging the status quo. Tackling this in 1:1 environments would require educators to develop knowledge and skills to engage culturally sustaining TPACK in their classroom.
How to recover from difficult condition? The relationship between leader-employee congruence in creativity goal and innovative performance
Authors: Yuan Yue , Wang Ping , Tian SongYuan
Published: September 2022

Purpose

Drawing upon the literature on person-leader supplementary fit literature, this study aims to positions dissatisfaction with organizational performance as a difficult condition that moderates the relationship between leader-employee congruence/incongruence in creativity goal and employee innovative performance.

Design/methodology/approach

In this paper data were collected from 226 leader-employee dyads from several information technology companies in China. Polynomial regression combined with the response surface methodology was used to test the hypotheses.

Findings

Three conclusions were drawn. First, employee innovative performance was maximized when leaders and employees were congruence in creativity goal. Second, in the case of congruence, employee had higher innovative performance when a leader's and an employee's creativity goal matched at high levels. Third, dissatisfaction with organizational performance moderated the effect of leader – employee congruence in creativity goal on employee innovative performance.

Originality/value

This study enhanced theoretical developments by considering the importance of leaders' congruence with employees in creativity goal for the first time. Additionally, the research results provided better practical guidance for how to help employees recover from difficult condition and continue to participate in innovation.
Research into influencing factors in user experiences of university mobile libraries based on mobile learning mode
Authors: Jiang Tan , Luo Guang , Wang Zikai , Yu Wenhui
Published: September 2022

Purpose

The purpose of this study is to analyse and discuss the influencing factors of user experience in university mobile libraries and the improvement path of user experience in the context of mobile learning.

Design/methodology/approach

The study adopted the grounded theory research method, and the sample included 28 students from five universities, with mobile libraries as the research objects and semi-structured interview as data acquisition method. A step-by-step coding analysis of the original interview materials was conducted, which comprehensively identified the main concerns and problems encountered by users of the university mobile library apps especially in the mobile learning behaviour mode, and then a theoretical model of the influencing factors of the app user experience of the university mobile library was constructed.

Findings

A theoretical model of influencing factors was constructed, which determined that system quality, interaction quality, content quality, interface quality and function quality were the key elements of mobile library user experiences. Furthermore, based on the research results and user feedback obtained in the research process, the content and key points relating to the user experience can be elaborated in detail. In addition, this study was able to determine users' perspectives and their behavioural characteristics when engaging in mobile learning.

Originality/value

This study establishes a theoretical model of the factors influencing of the user experience of university mobile libraries based on mobile learning, which could provide a valuable reference for the design of other programs and strategies to promote user learning experiences of mobile library app in colleges and universities.