bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge management and intellectual capital in knowledge-based organisations: a review and theoretical perspectives
Authors: Garcia-Perez Alexeis , Ghio Alessandro , Occhipinti Zeila , Verona Roberto 
Published: July 2020

PurposeThis paper provides a conceptual discussion of the bidirectional relationship between knowledge management (KM) and intellectual capital (IC) in a specific subset of knowledge-based organisations, i.e. professional sport organisations. Through the review and conceptual discussion of two relevant research themes, i.e. KM strategies for IC value creation and IC codification, this paper aims to highlight research gaps useful to future research.Design/methodology/approachThe authors apply a systematic literature review method to analyse 66 management and accounting studies on KM and IC in sport organisations. Internal and external validity tests support the methodology adopted.FindingsThe authors provide a conceptual model to explain how KM strategies about IC investments can be optimal, i.e. they create value for all the stakeholders but also suboptimal, i.e. they create value only for a group of stakeholders. Next, they provide evidence of the opportunistic use of the codification associated with IC investments that impair financial reporting information transparency and mislead managers and investors.Practical implicationsThe results are informative for managers, regulators and policymakers to mitigate the inefficiencies regarding KM and IC codification and decisions.Originality/valueThis study contributes to the understanding of the bidirectional relationship between KM and IC in knowledge-based organisations by focussing on professional sport organisations in which KM and IC have played an important role for a long time. It also includes future avenues for advances in managing, measuring and reporting IC.
Transient creep analytical modeling for shear endplate assemblies in fire
Authors: Al Haddad Hadi O. , Hantouche Elie G. 
Published: July 2020

PurposeThe purpose of this study is to develop an analytical model that is capable of predicting the behavior of shear endplate beam-column assemblies when exposed to fire, taking into account the thermal creep effect.Design/methodology/approachAn analytical model is developed and validated against finite element (FE) models previously validated against experimental tests in the literature. Major material and geometrical parameters are incorporated in the analysis to investigate their influence on the overall response of the shear endplate assembly in fire events.FindingsThe analytical model can predict the induced axial forces and deflections of the assembly. The results show that when creep effect is considered explicitly in the analysis, the beam undergoes excessive deformation. This deformation needs to be taken into account in the design. The results show the significance of thermal creep effect on the behavior of the shear endplate assembly as exposed to various fire scenarios.Research limitations/implicationsHowever, the user-defined constants of the creep equations cannot be applied to other connection types. These constants are limited to shear endplate connections having the material and geometrical parameters specified in this study.Originality/valueThe importance of the analytical model is that it provides a time-effective, simple and comprehensive technique that can be used as an alternative to the experimental tests and numerical methods. Also, it can be used to develop a design procedure that accounts for the transient thermal creep behavior of steel connections in real fire.
Who will land and stay? Page-specific antecedents of news engagement on social media
Authors: Iqbal Khan Shahid , Bilal Ahmad Raza , Ahmad Bilal 
Published: July 2020

PurposeThe purpose of this study is to investigate the impact of page-specific factors such as page language, posting frequency and community size on online engagement in the context of social media pages of news channels in Pakistan.Design/methodology/approachFor this research, official Facebook pages of news channels in Pakistan were defined as the target population. Secondary data were obtained from the Facebook pages of 28 news channels in Pakistan. For the selected period between August and September 2019, a total of 420 cases were obtained and manually entered in SPSS 21 for analysis. Tweedie estimation was run to check the proposed hypotheses.FindingsResults show that English pages are more engaging than Urdu. Additionally, posting frequency and community size have a negative relationship with online engagement.Practical implicationsThe findings of the study suggest that administrators of social media pages of news channels should target English news readers more than Urdu news readers. Additionally, they should manage a low posting frequency so that readers may not get irritated. Administrators should not sponsor their pages to expand community size on a single page. Instead, they may opt to build a separate page for each news category with smaller community size.Originality/valueWhile previous studies have discussed the post-specific factors of engagement, this study has checked the impact of page-specific factors such as page language, posting frequency and community size on online engagement.
Dynamic co-movements and directional spillovers among energy futures
Authors: Demiralay Sercan , Hourvouliades Nikolaos , Fassas Athanasios 
Published: July 2020

PurposeThis paper aims to examine dynamic equicorrelations (DECO) and directional volatility spillover effects among four energy futures markets, namely, West Texas Intermediate crude oil, heating oil, natural gas and reformulated blendstock for oxygenate blending gasoline, by using a multivariate fractionally integrated asymmetric power ARCH–DECO–generalized autoregressive conditional heteroskedasticity (GARCH) model and the spillover index technique.Design/methodology/approachThe empirical analysis uses the dynamic equicorrelation model of Engle and Kelly (2012) to examine time-varying correlations at equilibrium. The authors further analyze dynamic volatility transmission among energy futures by using Diebold and Yilmaz (2012) dynamic spillover index based on generalized value-at-risk framework.FindingsThe empirical results provide evidence of heightened equicorrelations at times of financial turmoil. More specifically, the dynamic spillover analysis shows that volatility is transmitted predominantly from crude oil to the other markets and risk transfer among four markets exhibits asymmetries. Spillovers are found to be highly responsive to dramatic events such as the 9/11 terror attack, 2008–2009 global financial crisis and 2014–2016 oil glut.Practical implicationsThe results of this study have important practical implications for investors, portfolio managers and energy policymakers as the presence of time-varying co-movements and spillovers suggests the need for dynamic trading strategies. There are also implications regarding risk management practices, as there is evidence of increased volatility transmission at times of financial turmoil and uncertainty. Finally, the results provide insights to policymakers in a better understanding of the spillover dynamics.Originality/valueThis paper investigates the DECOs and spillover effects among crude oil, natural gas, heating oil and gasoline futures markets. To the best of the knowledge, this is one of a few studies that examine co-movements and risk transfer in energy futures in a comprehensive framework.
Organizational learning and value creation in local governance: the mediating role of crowdsourcing
Authors: Lenart-Gansiniec Regina , Sułkowski Łukasz 
Published: July 2020

Purpose
Different studies have analyzed the relationship between organizational learning and value creation. However, the question of how crowdsourcing affects the relationships between organizational learning and value creation remains unexplored. This paper aims to explore the mediating role of crowdsourcing in the relationship between organizational learning and value creation in local governance.

Design/methodology/approach
The hypotheses were tested based on data collected from 205 local governance units in Poland using crowdsourcing. Data collection was carried out by using a set of standardized questionnaires. Correlation analyses were used to specify the strength of the relationships between the variables. To test the hypotheses, multiple regression analysis was used.

Findings
The results have shown that in the local governance organizational learning is related to crowdsourcing, while organizational learning is not related to value creation. Crowdsourcing does not play a mediating role in explaining the relationship between organizational learning and value creation.

Research limitations/implications
A research model was developed based on the relevant literature in the field of organizational learning, value creation and crowdsourcing. This study urges researchers to explore the relationship between organizational learning and value creation in other public organizations using crowdsourcing.

Originality/value
This is the first study on the intermediate role of crowdsourcing in the relationship between organizational learning and value creation in local governance. The proposed model enriches the existing literature and allows better understanding of how crowdsourcing acts as an intermediary in the organizational learning-value creation relationship.
Examining the relationships between innovation, quality, productivity, and customer satisfaction in pure service companies
Authors: Rew Dongjun , Jung Joo , Lovett Steve 
Published: July 2020

PurposeThis study investigates the relationships between innovation, quality, productivity and customer satisfaction in pure service companies. Previous studies have shown a negative relationship between quality and productivity in services. However, we argue the two can be positively related when innovation is present.Design/methodology/approachThis paper develops and tests hypotheses using secondary data from COMPUSTAT, KLD STAT and the American Customer Satisfaction Index (ACSI). We test these hypotheses using ordinary least squares regression and conduct additional testing using path analysis.FindingsThe findings show that quality and productivity are positively related when innovation is present in pure service companies. The findings also reveal find that innovation is antecedent to both service quality and productivity which in turn positively affect customer satisfaction.Practical implicationsBoth companies and customers can increase their outcomes including higher levels of service quality, productivity and customer satisfaction. Managers should therefore design innovative systems that enable customers to participate in service production. Other innovative systems may help to increase capacity utilization by smoothing high and low demand times, thus increasing both service quality and productivity.Originality/valueThis study contributes to service research by identifying innovation as the key to simultaneously increasing service quality and productivity. The authors find empirical support for a model in which service quality and productivity have a complementary relationship leading to customer satisfaction with innovation as an antecedent, and we do so using a sample of pure service firms.
What determines parasite species richness across host species?
Authors: Dallas Tad , Holian Lauren A. , Foster Grant 
Published: July 2020

AbstractIn FocusDáttilo, W., Barrozo‐Chávez, N., Lira‐Noriega, A., Guevara, R., Villalobos, F., Santiago‐Alarcon, D., Neves, F. S., Izzo, T., & Ribeiro, S. P. (2020). Species‐level drivers of mammalian ectoparasite faunas. Journal of Animal Ecology. https://doi.org/10.1111/1365-2656.13216. The question of what drives the number of parasite species able to infect a given host species is still a largely open question, despite decades of research. Dáttilo and colleagues examine the potential drivers of ectoparasite species across a large set of host species to explore the taxonomic and trait drivers of host‐parasite interactions. Here, we contextualize their findings, explore what is known about parasite species richness, and identify some potential next steps towards answers.
Integrated proteomic and metabolomic analyses revealed molecular adjustments in Populus × canescens colonized with the ectomycorrhizal fungus Paxillus involutus, which limited plant host growth
Authors: Szuba Agnieszka , Marczak Łukasz , Ratajczak Izabela , Kasprowicz‐Maluśki Anna , Mucha Joanna 
Published: July 2020

SummaryEctomycorrhizae (ECMs) are a highly context‐dependent interactions that are not always beneficial for the plant host, sometimes leading to a decrease in plant growth. However, the molecular status of these plants remains unknown. We studied Populus × canescens microcuttings characterized by impaired growth in response to colonization by a Paxillus involutus strain via integrative proteomics–metabolomics analyses. The analysed strain was characterized by low compatibility and formed only mantles, not a Hartig net, in the majority of root tips. The increased abundance of photosynthetic proteins and foliar carbohydrates co‐occurred with signals of intensified resource exchange via the stems of colonized plants. In the roots, intensified C metabolism resulted in the biosynthesis of secondary C compounds unavailable to the fungal partner but also C skeletons necessary to increase insufficient N uptake from the hyphae. The stress response was also detected in colonized plants but was similar to that reported previously during mutualistic ECM interactions. In colonized poplar plants, mechanisms to prevent imbalanced C/N trade‐offs were activated. Root metabolism strongly depended on features of the whole plant, especially the foliar C/N budget. However, despite ECM‐triggered growth impairment and the foliar nutrient status, the fungal partner was recognized to be a symbiotic partner.
Technologies of time: women’s practices of trying to conceive with ovulation biosensing
Authors: Wilkinson Joann 
Published: July 2020

AbstractOvulation biosensors are devices worn on or used with the body, which can help women detect ovulation. The manufacturers of such devices claim that if women know when they ovulate, couples can arrange heterosexual intercourse during this time, and thus increase their chances of conceiving. Within the contemporary UK context, in which becoming pregnant is presented in the popular media, and in medical discourses, as more difficult for women in their thirties and forties, manufacturers’ claims are attractive for those trying to conceive. Yet few sociological studies have examined women’s practices of ovulation biosensing. Drawing on women’s accounts of tracking ovulation, this paper explores how such practices fit into their trajectories of trying to conceive. It examines why ovulation biosensing seemingly becomes helpful, relevant or important during this time. Ovulation biosensors, it argues, alter the landscape of trying to become pregnant by introducing new stages and materialities which seemingly place women closer to conception. Women engage in ovulation biosensing, not only to help them become pregnant, but also as a way to manage the complexities of fertility and the uncertainties of becoming pregnant in contemporary society.
‘Virtual experience’ as an intervention before a positron emission tomography/CT scan may ease patients’ anxiety and improve image quality
Authors: Sun Yuyun , Sun Yifei , Qin Yue , Zhang Yingjian , Yuan Huiyu , Yang Zhongyi 
Published: July 2020

AbstractIntroductionThe aim of our study was to investigate the effect of a ‘virtual experience’ on reducing people’s anxiety levels and improving image quality.MethodsThis study included 200 people who underwent 18F‐FDG PET/CT scan for the first time. Healthy people (n = 100) and patients (n = 100) were randomly divided into a control group and an intervention group. In the intervention group, we used a ‘virtual experience’ as an intervention before the scan. We used the Spielberger State‐Trait Anxiety Inventory (STAI) and satisfaction questionnaires for evaluation. Additionally, the image quality was analysed.ResultsIn the control group, more patients presented anxiety than healthy people (26(52%) versus 15(30%)) (P = 0.041). However, when the ‘virtual experience’ was provided, the number of cases of anxiety in the patient group decreased to 19(38%). Furthermore, patients in the intervention group had lower STAI‐related scores than those in the control group (STAI‐S: 37.08 ± 9.42 versus 43.34 ± 10.49, P = 0.109; STAI‐T: 36.24 ± 9.55 versus 40.72 ± 9.00, P = 0.019). With respect to image quality, people who had higher STAI‐related scores were more likely to have unqualified images.ConclusionA ‘virtual experience’ provided by an audio‐visual installation can ease patients’ anxiety and improve image quality.
Evaluation of the R package ‘resistancega’: A promising approach towards the accurate optimization of landscape resistance surfaces
Authors: Winiarski Kristopher Jonathan , Peterman William E. , McGarigal Kevin 
Published: July 2020

AbstractUnderstanding how landscape features affect gene flow has implications for numerous fields including molecular and evolutionary ecology. Despite this, modelling landscape resistance surfaces has remained a significant challenge. The R package resistancega was developed to provide a framework for optimizing landscape resistance surfaces. In this study, we assessed ResistanceGA's ability to recover the true resistance surface under a variety of scenarios, including when the underlying surface: (a) had different levels of spatial autocorrelation and (b) was transformed into a resistance surface using different functional transformations. These scenarios were evaluated with regard to varying sample size and varying levels of variance in the measure of genetic distance. We also assessed the ability of ResistanceGA to identify the true resistance surface among alternative correlated surfaces. In univariate simulations, correlation between the true and optimized resistance surfaces remained high with increased variance in genetic distance, but only when sample size was moderate to high (≥50). Model selection error was also driven by sample size with low type I error when simulations had moderate to high sample sizes, even with moderate to high variance in genetic distance and correlated alternative surfaces. ResistanceGA also performed well in multivariate simulationsbut had more difficulty identifying the true data generating surfaces when genetic data were simulated using an agent‐based approach (especially with individual‐based genetic data). Overall, our simulations highlight the ability of ResistanceGA to accurately optimize resistance surfaces but also underscore challenges in optimizing landscape resistance surfaces, especially with highly stochastic individual‐based data.
Increasing methylation of sperm rDNA and other repetitive elements in the aging male mammalian germline
Authors: Potabattula Ramya , Zacchini Federica , Ptak Grazyna Ewa , Dittrich Marcus , Müller Tobias , El Hajj Nady , Hahn Thomas , Drummer Charis , Behr Rüdiger , Lucas‐Hahn Andrea , Niemann Heiner , Schorsch Martin , Haaf Thomas 
Published: July 2020

AbstractIn somatic cells/tissues, methylation of ribosomal DNA (rDNA) increases with age and age‐related pathologies, which has a direct impact on the regulation of nucleolar activity and cellular metabolism. Here, we used bisulfite pyrosequencing and show that methylation of the rDNA transcription unit including upstream control element (UCE), core promoter, 18S rDNA, and 28S rDNA in human sperm also significantly increases with donor's age. This positive correlation between sperm rDNA methylation and biological age is evolutionarily conserved among mammals with widely different life spans such as humans, marmoset, bovine, and mouse. Similar to the tandemly repeated rDNA, methylation of human α‐satellite and interspersed LINE1 repeats, marmoset α‐satellite, bovine alpha‐ and testis satellite I, mouse minor and major satellite, and LINE1‐T repeats increases in the aging male germline, probably related to their sperm histone packaging. Deep bisulfite sequencing of single rDNA molecules in human sperm revealed that methylation does not only depend on donor's age, but also depend on the region and sequence context (A vs. G alleles). Both average rDNA methylation of all analyzed DNA molecules and the number of fully (>50%) methylated alleles, which are thought to be epigenetically silenced, increase with donor's age. All analyzed CpGs in the sperm rDNA transcription unit show comparable age‐related methylation changes. Unlike other epigenetic aging markers, the rDNA clock appears to operate in similar ways in germline and soma in different mammalian species. We propose that sperm rDNA methylation, directly or indirectly, influences nucleolar formation and developmental potential in the early embryo.
Efficacy of erector spinae plane block for analgesia in breast surgery: a systematic review and meta‐analysis
Authors: Leong R. W. , Tan E. S. J. , Wong S. N. , Tan K. H. , Liu C. W. 
Published: July 2020

SummaryThe erector spinae plane block is a new regional anaesthesia technique that provides truncal anaesthesia for breast surgery. This systematic review and meta‐analysis was undertaken to determine if the erector spinae plane block is effective at reducing pain scores and opioid consumption after breast surgery. This study also evaluated the outcomes of erector spinae plane blocks compared with other regional blocks. PubMed, Embase, Scopus, the Cochrane Central Register of Controlled Trials and ClinicalTrials.gov were searched. We included randomised controlled trials reporting the use of the erector spinae plane block in adult breast surgery. Risk of bias was assessed with the revised Cochrane risk‐of‐bias tool. The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) framework was used to assess trial quality. Thirteen randomised controlled trials (861 patients; 418 erector spinae plane block, 215 no blocks, 228 other blocks) were included. Erector spinae plane block reduced postoperative pain compared with no block: at 0‐2 hours (mean difference (95% CI) −1.63 (−2.97 to −0.29), 6 studies, 329 patients, high‐quality evidence, I2 = 98%, p = 0.02); at 6 hours (mean difference (95% CI) −0.90 (−1.49 to −0.30), 5 studies, 250 patients, high‐quality evidence, I2 = 91%, p = 0.003); at 12 hours (mean difference (95% CI) −0.46 (−0.67 to −0.25), 5 studies, 250 patients, high‐quality evidence, I2 = 58%, p < 0.0001); and at 24 hours (mean difference (95% CI) −0.50 (−0.70 to −0.30), 6 studies, 329 patients, high‐quality evidence, I2 = 76%, p < 0.00001). Compared with no block, erector spinae plane block also showed significantly lower postoperative oral morphine equivalent requirements (mean difference (95% CI) −21.55mg (−32.57 to −10.52), 7 studies, 429 patients, high‐quality evidence, I2 = 99%, p = 0.0001). Separate analysis of studies comparing erector spinae plane block with pectoralis nerve block and paravertebral block showed that its analgesic efficacy was inferior to pectoralis nerve block and similar to paravertebral block. The incidence of pneumothorax was 2.6% in the paravertebral block group; there were no reports of complications of the other blocks. This review has shown that the erector spinae plane block is more effective at reducing postoperative opioid consumption and pain scores up to 24 hours compared with general anaesthesia alone. However, it was inferior to the pectoralis nerve block and its efficacy was similar to paravertebral block. Further evidence, preferably from properly blinded trials, is required to confirm these findings.