bluuebunny/crossref_metadata_2025_split huggingface dataset:
Geographical origin determines responses to salinity of Mediterranean caddisflies
Authors: Carter Mauricio J. , Flores Matías , Ramos-Jiliberto Rodrigo 
Published: July 2019

AbstractMany freshwater ecosystems worldwide, and particularly Mediterranean ones, show increasing levels of salinity. This changes in water conditions could affect abundance and distribution of inhabiting species as well as the provision of ecosystem services. In this study we conduct laboratory experiments using the macroinvertebrate Smicridea annulicornis as a model organism. Our factorial experiments were designed to evaluate the effects of geographical origin on organisms and salinity levels on survival and behavioral responses of caddisflies. The experimental organisms were captured from rivers belonging to three hydrological basins along a 450 Km latitudinal gradient in the Mediterranean region of Chile. Animals were exposed to three conductivity levels, from 180 to 1400 μS/cm, close to the historical averages of the source rivers. We measured the behavioral responses to experimental stimulii and the survival time. Our results showed that geography origin shaped the behavioral and survival responses to salinity. In particular, survival and activity decreased more strongly with increasing salinity in organisms coming from more dilute waters. This suggests local adaptation to be determinant for salinity responses in this species of benthic invertebrate. In the current scenario of fast temporal and spatial changes in water levels and salt concentration, the conservation of geographic intra-specific variation of aquatic species is crucial for lowering the risk of salinity-driven biodiversity loss.
The TIR-domain containing effectors BtpA and BtpB fromBrucella abortusblock energy metabolism
Authors: Coronas-Serna Julia María , Louche Arthur , Rodríguez-Escudero María , Roussin Morgane , Imbert Paul R.C. , Rodríguez-Escudero Isabel , Molina María , Gorvel Jean-Pierre , Cid Víctor J. , Salcedo Suzana P. 
Published: July 2019

ABSTRACTBrucellaspecies are facultative intracellular Gram-negative bacteria relevant to animal and human health. Their ability to establish an intracellular niche and subvert host cell pathways to their advantage depends on the delivery of bacterial effector proteins through a type IV secretion system.BrucellaToll/Interleukin-1 Receptor (TIR)-domain-containing proteins BtpA (also known as TcpB) and BtpB are among such effectors. Although divergent in primary sequence, they interfere with Toll-like receptor (TLR) signaling to inhibit the innate immune responses. However, the molecular mechanisms implicated still remain unclear. To gain insight into the functions of BtpA and BtpB, we expressed them in the budding yeastSaccharomyces cerevisiaeas a eukaryotic cell model. We found that both effectors were cytotoxic and that their respective TIR domains were necessary and sufficient for yeast growth inhibition. Growth arrest was concomitant with actin depolymerization, endocytic block and a general decrease in kinase activity in the cell, suggesting a failure in energetic metabolism. Indeed, levels of ATP and NAD+were low in yeast cells expressing BtpA and BtpB TIR domains, consistent with the recently described enzymatic activity of some TIR domains as NAD+hydrolases. In human epithelial cells, both BtpA and BtpB expression reduced intracellular total NAD levels. In infected cells, both BtpA and BtpB contributed to reduction of total NAD, indicating that their NAD+hydrolase functions are active intracellularly during infection. Overall, combining the yeast model together with mammalian cells and infection studies our results show that BtpA and BtpB modulate energy metabolism in host cells through NAD+hydrolysis, assigning a novel role for these TIR domain-containing effectors inBrucellapathogenesis.
Reporting animal research: Explanation and Elaboration for the ARRIVE guidelines 2019
Authors: Percie du Sert Nathalie , Ahluwalia Amrita , Alam Sabina , Avey Marc T. , Baker Monya , Browne William J. , Clark Alejandra , Cuthill Innes C. , Dirnagl Ulrich , Emerson Michael , Garner Paul , Holgate Stephen T. , Howells David W. , Hurst Viki , Karp Natasha A. , Lidster Katie , MacCallum Catriona J. , Macleod Malcolm , Pearl Esther J , Petersen Ole , Rawle Frances , Reynolds Penny , Rooney Kieron , Sena Emily S. , Silberberg Shai D. , Steckler Thomas , Würbel Hanno 
Published: July 2019

AbstractImproving the reproducibility of biomedical research is a major challenge. Transparent and accurate reporting are vital to this process; it allows readers to assess the reliability of the findings, and repeat or build upon the work of other researchers. The NC3Rs developed the ARRIVE guidelines in 2010 to help authors and journals identify the minimum information necessary to report in publications describingin vivoexperiments.Despite widespread endorsement by the scientific community, the impact of the ARRIVE guidelines on the transparency of reporting in animal research publications has been limited. We have revised the ARRIVE guidelines to update them and facilitate their use in practice. The revised guidelines are published alongside this paper. This Explanation and Elaboration document was developed as part of the revision. It provides further information about each of the 21 items in ARRIVE 2019, including the rationale and supporting evidence for their inclusion in the guidelines, elaboration of details to report, and examples of good reporting from the published literature.
Numerical investigation on operation characteristic of ramjet projectile
Authors: Zhuo Chang-Fei , Wang Ming-Xiao , Yao Wen-Jin , Xu Wen-ke 
Published: July 2019

Purpose
The purpose of this paper is to study the operation performance of the high-speed ramjet kinetic energy projectile using solid fuel ramjet as power plant that is a new short-range and small caliber projectile.

Design/methodology/approach
The numerical investigation on combustion characteristic of polyethylene in high-speed ramjet kinetic energy projectile is carried out in this paper. The flow characteristics’ differences are analyzed when ramjet works or do not work, and both the combustion characteristics and propulsive performance are analyzed when ramjet works.

Findings
The results show that with the increase of the abscissa x, the flame front is close to solid fuel surface at first and then keeps away from solid fuel surface. With the increase of the abscissa x, the temperature of solid fuel surface and regression rate of solid fuel continues to increase before re-attachment point and then decreases, which a maximum locate at the re-attachment point. Both the average temperature and the regression rate on the surface of the solid fuel tend to rise as the increase of inflow Mach number. As the inflow of Mach number increases, the mass flow rate of gaseous fuel increases.

Practical implications
The research results can provide useful database for the subsequent research on high-speed ramjet kinetic energy projectile.

Originality/value
This paper studies the operation characteristics of the ramjet projectile, especially the effect of the change of the flight velocity on the performance of high-speed ramjet projectile.
Calculations of eddy currents in electrical steel sheets taking into account their magnetic hysteresis
Authors: Szular Zbigniew , Mazgaj Witold 
Published: July 2019

Purpose
The purpose of this paper is to present the method which relatively easily allows to approximate the hysteresis loop of the dynamo or transformer steel sheets. The paper also looks into the formulation of an equation allowing determination of distribution of the flux density and eddy currents in cross-section of these sheets.

Design/methodology/approach
An exponential function was applied in the presented method relating to the approximation of the hysteresis loop. When the field strength changes its value, then, the flux density are the sum or difference of a function, describing the lower or upper hysteresis curve and some “ransient” component. On the basis of Maxwell’s equations and Amper’s law, one non-linear differential equation was formulated which allows to calculate the flux density and eddy currents in a cross-section of a transformer sheet.

Findings
The method which relatively easily allows approximation of the hysteresis loop of ferromagnetic material is presented in the paper. The paper presents the derivation of one non-linear differential equation, allowing calculation of the flux density and eddy currents in the cross-section of the transformer sheets, taking into account the hysteresis phenomenon.

Practical implications
The paper presents the method that can be used in modeling of the hysteresis loops of dynamo or transformer sheets, and the final non-linear differential equation can be applied in calculations of the magnetic field and eddy currents in cross-section of the transformer sheets.

Originality/value
The paper refers to important issues of modeling and calculations of the magnetic and eddy current field distribution in transformer steel sheets.
Multilevel safety culture affecting organization safety performance: a system dynamic approach
Authors: Qayoom Abdul , H.W. Hadikusumo Bonaventura 
Published: July 2019

Purpose
Previous research studies have testified that safety culture positively affects safety performance. However, the progression by which safety culture affects safety performance has not yet been examined. Also, how safety culture affects the overall safety performance at different levels of the organization is yet to be explored. In order to address this issue, the purpose of this paper is to study the effect of multilevel safety culture upon safety performance over time.

Design/methodology/approach
A conceptual causal-loop diagram is constructed using the group model building approach to establish the relationship between safety culture components (e.g. psychological, behavioral and situational) and the factors associated with safety performance (e.g. risk level, safety behavior, unsafe conditions, unsafe acts and incident rate). Considering the dynamic nature and intricacy of the safety management system, the system dynamics approach has been employed to develop the model.

Findings
The results indicate that the safety culture at the tactical level (middle management) and operational level is much more effective than strategic level (top management) in ameliorating the safety performance of the organization.

Research limitations/implications
The scope of this study is limited to the effect of multilevel safety culture on safety performance. The focus is on the dynamics of personal, behavioral and situational factors of top management, middle management and workers to reinforce the safety performance of the organization. Future research can be protracted to build other models of safety.

Practical implications
First and foremost, the findings summarized in this paper can be implemented by organizations to achieve the total safety culture to upgrade safety performance.

Originality/value
This paper presents the holistic view of multilevel safety culture in an organization’s hierarchy. It shows how multilevel level safety culture in an organization interacts with the safety management system to enhance the safety performance of the organization.
Boom or bust? Embedding entrepreneurship in education in Australia
Authors: Maritz Alex , Nguyen Quan , Bliemel Martin 
Published: July 2019

Purpose
The purpose of this paper is to evaluate the status of entrepreneurship education (EE) in Australia, replicating and expanding a similar study in 2015. The aim is to review neoteric global best practice EE initiatives, enabling the examination and embedding of EE offerings and initiatives at all 40 higher education institutions (HEIs) in Australia.

Design/methodology/approach
The authors introduce a review of prominent and recent global EE scholarship, enabling an iterative and emergent inquiry perspective aligned to inductive and nascent multi-method empirical research associated with theoretical underpinnings of symbolic and substantive management theory.

Findings
This paper highlights the sparse and inconsistent distribution of EE programs and initiatives across all 40 Australian HEIs, particularly against the backdrop of rapidly expanding start-up and entrepreneurship ecosystems. Furthermore, outcomes provide best practice EE initiatives, which included staff mobility and transferability of skills. HEIs in Australia are experiencing a moderate EE boom, albeit marginally down on global EE transformation initiatives.

Research limitations/implications
Limitation of the data is subject to availability and accuracy of online documents and material resources, although implications have been mitigated using multi-method research design.

Practical implications
The findings provide critical grounding for researchers, practitioners and HEIs wishing to enhance EE within ever-expanding entrepreneurship ecosystems.

Originality/value
This study is the first multi-methods inquiry into the status of EE in Australia, consisting of quantitative, qualitative and algorithmic methods.
Gender disparities and positioning in collaborative hospitality and tourism research
Authors: Koseoglu Mehmet Ali , King Brian , Rahimi Roya 
Published: July 2019

Purpose
This paper aims to explore gender disparities in the production of tourism knowledge with particular reference to academic journals.

Design/methodology/approach
Authorship and co-authorship analyses were conducted of data extracted from articles and research notes published between 1965 and 2016 in 25 hospitality and tourism journals.

Findings
Gender imbalances are evident in the production of knowledge, though the disparities appear to be decreasing. While heterophilic research collaborations (those between men and women) show some evidence of higher productivity, homophilic collaborations (between males) have greater impact. The findings highlight gender imbalances in international collaborations, in SSCI listed journals, in first authoring and by country. There is evidence of higher collaborative levels among male authors and the differences have increased over time. The positioning of men and women within tourism scholarly networks shows no marked differences.

Practical implications
This data-driven analysis provides decision makers and policymakers with evidence to support well-targeted programs that advance female contributions in hospitality and tourism research collaborations. For example, senior academics and University administrators might offer support for female researchers to become more actively involved in hospitality and tourism research groups and projects. Universities or schools might also seek to encourage collaborations between male and female researchers in their performance indicators.

Originality/value
This study is one of the first to examine gender disparities and positioning in collaborative hospitality and tourism research.
Talent pool exclusion: the hotel employee perspective
Authors: Kichuk Aliaksei , Brown Lorraine , Ladkin Adele 
Published: July 2019

PurposeThe purpose of this paper is to explore the experiences of employees excluded from a talent pool and to identify what career development is provided for them.Design/methodology/approachA qualitative approach was adopted, and narrative inquiry was selected as the optimum route to obtaining detailed and rich accounts of the experiences of employees excluded from a talent pool. Fifteen in-depth interviews were conducted with eight employees and seven managers in a small hotel chain in the south of England.FindingsThe study shows that employees who are excluded from a talent pool feel frustration, mistrust in the organisation, have low expectations of career development and show an intention to leave the organisation.Research limitations/implicationsThe study was conducted in a chain of hotels where talent management (TM) strategies are one of the key priorities in the organisation. The results may be different in hotels where TM strategies are less formal and talent pool segmentation is not clearly identified.Practical implicationsHotel managers should consider employees who are excluded from a talent pool and build effective TM strategies and provide career development to minimise adverse reactions and improve commitment and motivation.Originality/valueThis research contributes to understanding talent pool exclusion and its consequences for the hotel sector. Narrative interviewing is used in this context for the first time.
Cultural essentialism and tailored hotel service for Chinese: the moderating role of satisfaction
Authors: Fong Lawrence Hoc Nang , He Hongwei , Chao Melody Manchi , Leandro Galli , King David 
Published: July 2019

Purpose
The purpose of this study is to understand Chinese consumers’ responses to ethnically tailored hotel services from the theoretical perspective of cultural essentialism.

Design/methodology/approach
Data collection was conducted through an online survey with Chinese respondents. Hierarchical moderated regression was performed to analyze the data.

Findings
The results show a positive relationship between cultural essentialism and consumer responses to hotel services that are tailored to their culture. Furthermore, the findings show that prior service satisfaction does not only positively influence the consumer responses, but also amplifies the link between cultural essentialism and the consumer responses.

Practical implications
Hoteliers are recommended to consider the cultural essentialism of Chinese consumers when adaptive services are introduced. Hotel services that are tailored to Chinese culture is a viable strategy if most Chinese customers are cultural essentialists.

Originality/value
This study adds knowledge to the hospitality scholarship by introducing cultural essentialism and demonstrating its role in influencing consumer preferences for familiarity as opposed to exotic hotel services. Furthermore, the moderating role of service satisfaction extends the consumer behavior literature.
Home prices and fundamentals: solving the mystery for the G-7 by accounting for nonlinearities
Authors: Miles William 
Published: July 2019

PurposeThe purpose of this study is to determine whether house prices and income share a stable, stationary relationship in the G-7 countries. This stable relationship has been clearly implied by theory but has been difficult to uncover empirically in previous studies.Design/methodology/approachThe analysis entails using nonlinear tests for a stationary relationship between home prices and per-capita income for the G-7 countries, whereas most previous papers on the topic have used linear methods.FindingsWhen the standard linear ADF test is used, no stationary relationship for home prices and income is found for any of the G-7 countries. When the more powerful (but still linear) Ng–Perron test is used, the USA, but no other G-7 country, exhibits a stable relationship between the two variables. When the nonlinear Enders–Granger test is used, stationarity between home prices and income is found for five of the remaining six G-7 states.Practical implicationsPrevious research has shown that as house prices have risen far above the income, especially over bubble periods, income has done a poor job in predicting home values. The findings show that income has a clear long-run stationary relationship with home values. This implies income could be helpful in providing home price forecasts.Originality/valueWhere previous studies have failed to find a long-run relationship between home prices and income while using linear methods, results in this paper show this theoretical asset–pricing relationship holds once the adjustment process is allowed to exhibit nonlinearity.
The effect of negative information on the volatility of real estate residential prices in Abuja, Nigeria
Authors: Alkali Musa , Sipan Ibrahim , Razali Muhammad Najib 
Published: July 2019

Purpose
The purpose of this paper is to determine the effect of negative information on the volatility of real estate residential prices in Abuja, Nigeria.

Design/methodology/approach
The empirical research covers a sample period of 17 years from the first quarter of 2000 to the fourth quarter of 2017. The leverage effect of Abuja’s real estate residential price volatility is determined. Exponential generalised autoregressive conditional heteroscedasticity is used to determine the ARCH shock, GARCH persistence and the leverage effect of the volatility of residential prices in Abuja.

Findings
The research found that the volatility of real estate prices varies from one category of residential property to another. The leverage effect was found only in the price of two and three bedroom flats in Abuja.

Originality/value
The findings provide useful information on the volatility of real estate prices for real estate investors. The study has policy implications for the regulation of measures that gradually checkmate the patterns of volatility in the Nigerian real estate market. It also controls negative information (such as a fall of crude oil prices, high costs of building materials, inconsistency of macro-economic policies and insecurity and political uncertainty) which mainly raises the level of uncertainty in the market and exposes investors to risk.
Agility and resource dependency in ramp-up process of humanitarian organizations
Authors: Lu Qing , Wu Jie , Goh Mark , De Souza Robert 
Published: July 2019

PurposeThe ramp-up in humanitarian logistics operations is a stage when the demand surges, often at the start of an emergency. In response, agility is a key strategy used by the humanitarian organizations (HOs). However, the HOs are constrained by their existing resources and have to respond in the ramp-up process under their resource dependency. The purpose of this paper is to develop a framework on agility-building strategies used by HOs for the ramp-up.Design/methodology/approachThis study applies both the dynamic capabilities perspective and resource dependence theory to humanitarian relief operations, and develops four testable propositions to explore the agility-building strategies of the HOs for the ramp-up process. A multiple-case study is conducted on six international HOs operating in Indonesia to verify them, in addition to an extensive literature search.FindingsThe case study shows that the human resource management, pre-positioning, standardization and supplier management of the HOs are all related to their resources and environment in the ramp-up process. The authors highlight the practical differences between the few super large, resource rich and centralized HOs with the second-tier HOs.Research limitations/implicationsGiven the small sample size and single country as the site of study, some findings may not be applicable to the other HOs or in other regions.Practical implicationsThe propositions could be applicable to other HOs operating under similar environments, and potentially to the commercial enterprises operating in a highly volatile environment with severe resource scarcity.Originality/valueThis study provides new insights into ramp-up operations and into how HOs build their agility and reduce their resource dependencies. Theoretically, the paper applies two established theories in the strategic management literature to a new field.