bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rare morph Lake Malawi mbuna cichlids benefit from reduced aggression from con- and hetero-specifics
Authors: Tyers Alexandra M. , Cooke Gavan M. , Turner George F. 
Published: April 2021

AbstractBalancing selection is important for the maintenance of polymorphism as it can prevent either fixation of one morph through directional selection or genetic drift, or speciation by disruptive selection. Polychromatism can be maintained if the fitness of alternative morphs depends on the relative frequency in a population. In aggressive species, negative frequency-dependent antagonism can prevent an increase in the frequency of rare morphs as they would only benefit from increased fitness while they are rare. Heterospecific aggression is common in nature and has the potential to contribute to rare morph advantage. Here we carry out field observations and laboratory aggression experiments with mbuna cichlids from Lake Malawi, to investigate the role of con- and heterospecific aggression in the maintenance of polychromatism and identify benefits to rare mores which are likely to result from reduced aggression. Within species we found that males and females bias aggression towards their own morph, adding to the evidence that inherent own-morph aggression biases can contribute to balancing selection. Over-representation of rare morph territory owners may be influenced by two factors; higher tolerance of different morph individuals as neighbours, and ability of rare morphs to spend more time feeding. Reduced aggression to rare morph individuals by heterospecifics may also contribute to rare morph advantage.
Field microenvironments regulate crop diel transcript and metabolite rhythms
Authors: Dantas Luíza Lane Barros , Dourado Maíra Marins , de Lima Natalia Oliveira , Cavaçana Natale , Nishiyama Milton Yutaka , Souza Glaucia Mendes , Carneiro Monalisa Sampaio , Caldana Camila , Hotta Carlos Takeshi 
Published: April 2021

SummaryMost research in plant chronobiology was done in laboratory conditions. However, they usually fail to mimic natural conditions and their slight fluctuations, highlighting or obfuscating rhythmicity. High-density crops, such as sugarcane (Saccharumhybrid), generate field microenvironments with specific light and temperature due to mutual shading.We measured the metabolic and transcriptional rhythms in the leaves of 4-month-old (4 mo) and 9 mo sugarcane grown in the field. Most of the assayed rhythms in 9 mo sugarcane peaked >1 h later than in 4 mo sugarcane, including rhythms of the circadian clock gene,LATE ELONGATED HYPOCOTYL(LHY).We hypothesized that older sugarcane perceives dawn later than younger sugarcane due to self-shading. As a test, we measuredLHYrhythms in plants on the east and the west side of a field. We also tested if a wooden wall built between lines of sugarcane changed their rhythms. TheLHYpeak was delayed in the plants in the west of the field or beyond the wall; both shaded at dawn.We conclude that plants in the same field may have different phases due to field microenvironments, impacting important agronomical traits, such as flowering time, stalk weight and number.
Stopping a Continuous Movement: A Novel Approach to Investigating Motor Control
Authors: Schultz Kelsey E. , Denning Dominique , Hufnagel Vanessa , Swann Nicole 
Published: April 2021

ABSTRACTFlexible, adaptive behavior is critically dependent on inhibitory control. For example, if you suddenly notice you are about to step on a tack and would prefer not to, the ability to halt your ongoing movement is critical. To address limitations in existing approaches for studying your ability to rapidly terminate your movement (“stopping”), we developed a novel stop task. This task requires termination of ongoing motor programs, provides a direct measure of SSRT, and allows for comparison of the same behavior (stopping) in conditions that elicit either prepared or reactive inhibitory control. Here, we present and evaluate our novel Continuous Movement Stop Task (CMST). We examined several versions of the task in a total of 49 participants. Our data reveal that the CMST is effectively able to dissociate stopping behavior between the planned and unplanned conditions. Additionally, within the subset of participants for which we measured speed, we found that participants initiated stopping (with respect to the stop signal) significantly earlier on planned stop compared to unplanned stop trials. Finally, participants took longer to arrive at full motor arrest (i.e. SSRT) following stop initiation on planned than on unplanned stop trials. This novel task design will enable a more precise quantification of stopping behavior and, in conjunction with neuroscientific methods, could provide more rigorous characterization of brain networks underlying stopping.
Local food sales and point of sale priming: evidence from a supermarket field experiment
Authors: Brečić Ružica , Sinčić Ćorić Dubravka , Lučić Andrea , Gorton Matthew , Filipović Jelena 
Published: April 2021

Purpose
An intention-behavior gap often occurs for socially responsible consumption, where despite positive consumer attitudes, sales remain disappointing. This paper aims to test the ability of in-store priming to increase sales of local foods vis-à-vis imported, cheaper equivalents.

Design/methodology/approach
Laboratory and field experiments in three countries (Croatia, Slovenia and Serbia), working with an international grocery retailer, assess the ability of textual and pictorial-based point of sale (PoS) materials to increase the purchase of local foods. Field sales data, for the purchase of local apples and cherries and their imported equivalents, are complemented by an analysis of loyalty card transactions.

Findings
Field data indicate that both pictorial and textual PoS materials, significantly increase the likelihood of purchasing local foods, against cheaper imported equivalents. Pictorial PoS materials appear more effective than textual equivalents. Laboratory study data indicate that PoS materials increase the salience of goal consistent mechanisms in decision-making at the expense of mechanisms to achieve non-primed goals.

Research limitations/implications
The field experiment lasted for only two weeks and focused on seasonal produce.

Practical implications
PoS materials offer a low cost intervention for modifying consumer behavior in stores.

Originality/value
The paper develops a theory regarding how priming works and its application in a supermarket setting. This is investigated and validated in the context of local foods. The study offers encouragement for the usefulness of other in-store primes, such as relating to diet, to improve socially desirable outcomes without economic incentives or coercion and in a cost-effective manner.
Is export-led growth hypothesis still valid for sub-Saharan African countries? New evidence from panel data analysis
Authors: Odhiambo Nicholas M. 
Published: April 2021

PurposeThis study examines the causal relationship between exports and economic growth in sub-Saharan African (SSA) countries during the period 1980 to 2017. The study also examines whether the causality between these two macroeconomic variables depends on the countries' stage of development as proxied by their per capita income.Design/methodology/approachThe study uses a panel cointegration test and panel Granger-causality model to examine the link between exports and growth. The study also incorporates external debt as an intermittent variable in a bivariate setting between exports and economic growth, thereby creating a dynamic multivariate panel Granger-causality model.FindingsAlthough the study found the existence of a long-run relationship between exports and economic growth, the study failed to find any export-led growth response in both low-income and middle-income countries. Instead, the study found evidence of a bidirectional causality and a neutrality response in middle-income and low-income countries, respectively. The study, therefore, concludes that the benefits of an export-led growth hypothesis may have been oversold, and that the strategy may not be desirable to some low-income developing countries.Practical implicationsThese findings have important policy implications as they indicate that the causality between exports and economic growth in SSA countries varies with the countries' stage of development. Consistent with the contemporary literature, the study cautions low-income SSA countries against over-relying on an export-led growth strategy to achieve a sustained growth path as no causality between exports and economic growth has been found to exist in those countries. Instead, such countries should consider pursuing new growth strategies by building the domestic demand side of their economies alongside their export promotion strategies in order to expand the real sector of their economies. For middle-income countries, the study recommends that both export promotion strategies and pro-growth policies should be intensified as economic growth and exports have been found to reinforce each other in those countries.Originality/valueUnlike the previous studies, the current study disaggregated the full sample of SSA countries into two subsets – one comprising of low-income countries and the other consisting of middle-income countries. In addition, the study uses a multivariate Granger-causality model in order to address the emission-of-variable bias. To our knowledge, this may be the first study of its kind in recent years to examine in detail the causal relationship between exports and economic growth in SSA countries using an ECM-based multivariate panel Granger-causality model.
Different tube bundles effect on the shell-and-tube heat exchanger performance
Authors: Abbasian Arani Ali Akbar , Uosofvand Hamed 
Published: April 2021

Purpose
This paper aims to present a numerical investigation on laboratory-scale segmental baffles shell-and-tube heat exchanger (STHX) having various tube bundles and baffle configuration.

Design/methodology/approach
To discover the higher performance the thermohydraulic behavior of shell-side fluid flow with circular, elliptical and twisted oval tube bundles with segmental and inclined segmental baffled is compared. Shell side turbulent flow and heat transfer are simulated by a finite volume discretization approach using SolidWorks Flow Simulation. To achieve greater configuration performance of this device, the following two approaches is considered: using the inclined baffle with 200 angles of inclination and applying the different tube bundle.

Findings
Different parameters as heat transfer rate, pressure drop (Δp), heat transfer coefficient (h) and heat transfer coefficient to pressure drop ratio (h/Δp) are presented and discussed. Besides, for considering the effect of pressure penalty and heat transfer improvement instantaneously, the efficiency evaluation coefficient (EEC) in the fluid flow and heat transfer based on the power required to provide the real heat transfer augmentation are used.

Originality/value
Obtained results displayed that, at the equal mass flow rate, the twisted oval tubes with segmental baffle decrease the pressure drop 53.6% and 35.64% rather than that the circular and elliptical tubes bundle, respectively. By comparing the (h/Δp) ratio, it can result that the STHX with twisted oval tubes bundle (both segmental and inclined baffle) has better performance than other kinds of the tube bundles. Present results showed that the values of the EEC for all provided models are higher than 1, except for elliptical tube bundles with segmental baffles. The STHX with twisted oval tube bundles and segmental baffle gives the highest EEC value equal to 1.16 in the range of investigated mass flow.
Enforcement and accounting quality in the context of IFRS: is there a gap in the literature?
Authors: Silva Adriana , Jorge Susana , Rodrigues Lúcia Lima 
Published: April 2021

Purpose
Existing research has concluded that accounting quality is influenced not only by the quality of accounting standards, but also by enforcement systems. Therefore, enforcement is one of the key factors for ensuring International Financial Reporting Standards’ (IFRS) compliance and achieving accounting quality. However, one still does not know what has been studied about this relationship in scientific literature. Accordingly, the purpose of this paper is to identify, recap and evaluate the current state of research on the relationship between IFRS enforcement and accounting quality, to provide a critical overview of publications in this field and to identify future areas of interest.

Design/methodology/approach
Supported by a structured literature review, this paper fills in a research gap by conducting a scientometric analysis of papers on the relationship between IFRS enforcement and accounting quality construed in a broad sense. It reviews papers published between 2006 and 2019 selected from the Web of Science database, particularly analyzing main journals, authors, geographic areas of study, methods used, specific topics explored and future lines of research to be developed.

Findings
Main findings show a shortage of studies analyzing IFRS enforcement practices in individual countries and, in turn, the impact these practices may have on the accounting quality. This gap calls for further research to know the effectiveness of the IFRS-related enforcement mechanisms.

Originality/value
To the best of the authors’ knowledge, no previous scientometric studies focused on the enforcement of IFRS and accounting quality. This study fills this research gap and improves the understanding about what has been published on the topic, also proposing an agenda for future research that can help regulators to adjust policies for the implementation and enforcement of IFRS.
A calibration method of redundant actuated parallel mechanism for posture adjustment
Authors: Chu Wenmin , Huang Xiang , Li Shuanggao 
Published: April 2021

Purpose
With the improvement of modern aircraft requirements for safety, long life and economy, higher quality aircraft assembly is needed. However, due to the manufacturing and assembly errors of the posture adjustment mechanism (PAM) used in the digital assembly of aircraft large component (ALC), the posture alignment accuracy of ALC is difficult to be guaranteed, and the posture adjustment stress is easy to be generated. Aiming at these problems, this paper aims to propose a calibration method of redundant actuated parallel mechanism (RAPM) for posture adjustment.

Design/methodology/approach
First, the kinematics model of the PAM is established, and the influence of the coupling relationship between the axes of the numerical control locators (NCL) is analyzed. Second, the calibration method based on force closed-loop feedback is used to calibrate each branch chain (BC) of the PAM, and the solution of kinematic parameters is optimized by Random Sample Consensus (RANSAC). Third, the uncertainty of kinematic calibration is analyzed by Monte Carlo method. Finally, a simulated posture adjustment system was built to calibrate the kinematics parameters of PAM, and the posture adjustment experiment was carried out according to the calibration results.

Findings
The experiment results show that the proposed calibration method can significantly improve the posture adjustment accuracy and greatly reduce the posture adjustment stress.

Originality/value
In this paper, a calibration method based on force feedback is proposed to avoid the deformation of NCL and bracket caused by redundant driving during the calibration process, and RANSAC method is used to reduce the influence of large random error on the calibration accuracy.
Multichannel integration through innovation capability in manufacturing SMEs and its impact on performance
Authors: Kolbe Diana , Calderón Haydeé , Frasquet Marta 
Published: April 2021

Purpose
Using online channels is an opportunity for small and medium-sized enterprises (SMEs) in the manufacturing industry to reach new markets and reduce the dependency on distributors. The challenge remains that of integrating new online channels into existing networks effectively. This paper aims to identify to what extent multichannel integration is enhanced by the innovation capability of manufacturing SMEs and the subsequent influence on their performance.

Design/methodology/approach
Data were collected by means of a survey aimed at managers of small manufacturing firms in Mexico and were analysed through an advanced partial least squares (PLS) approach via SmartPLS.

Findings
Manufacturing SMEs with more advanced innovation capability achieve higher levels of multichannel integration. In turn, when multichannel integration is more advanced, manufacturing SMEs enjoy better results with respect to sales, fulfilling marketing objectives and improving relationships with customers.

Research limitations/implications
The model could be extended to accommodate other variables that may affect the effective integration of multiple channels.

Practical implications
Manufacturing SMEs can improve their results by integrating online channels with existing offline channels with a commitment to innovating in the market.

Originality/value
Analysing multichannel integration from the perspective of manufacturing firms, examining not only the positive consequences but also the underlying capabilities needed.
How does renqing influence purchase intentions in the Chinese business-to-business context?
Authors: Zhang Xun , Xu Biao , Wu Jun 
Published: April 2021

Purpose
This study aims to examine the relationship between renqing and purchase intentions and the mechanism of its impact in the Chinese business-to-business (B2B) context.

Design/methodology/approach
Renqing in China has played an important role in business relationships and has been receiving increased attention in both practice and theory. However, little is known about whether it can influence purchase intentions in a rational B2B condition. This research aims to examine the relationship between renqing and purchase intentions and the mechanism of its impact in the Chinese B2B context. Based on a survey of 1,010 industry buyers from 468 Chinese downstream buyer companies, the empirical findings indicate a positive relationship between renqing and purchase intentions and the mediating role of long-term orientation (LTO) for increasing purchase intentions. In addition, this study also finds that product involvement (PI) has a negative moderating effect on the relationship between renqing and purchase intentions, which means that renqing has a big positive effect on purchase intentions in low PI conditions. The results highlight several implications for B2B companies that sell products to Chinese enterprises.

Findings
The empirical findings indicate a positive relationship between renqing and purchase intentions and the mediating role of LTO for increasing purchase intentions. In addition, this study also finds that PI has a negative moderating effect on the relationship between renqing and purchase intentions, which means that renqing has a big positive effect on purchase intentions in low PI conditions.

Originality/value
First of all, by answering the research question, this study shows that renqing has a positive effect on purchase intentions in Chinese B2B context. Second, this study elucidates the influence mechanism of renqing on purchase intention and identifies the mediating effect of LTO and the moderating effect of PI.
When time pressure counters the zero price effect
Authors: Dinsmore John Bowman , Wright Scott A. , Plotkina Daria 
Published: April 2021

Purpose
The freemium pricing model is dominant in digital products such as mobile applications. While limited evaluation of a product such as when a consumer is under time pressure, has been found to increase consumer preference for the free version (“the zero price effect”), this paper aims to explore moderators that attenuate or reverse that effect.

Design/methodology/approach
Three experiments test the role of anchoring effects induced by time pressure in moderating the zero price effect.

Findings
The studies offer evidence that anchoring effects induced by time pressure can be directed to reduce preference for free versions of products. In addition, these effects are mediated by the perceived performance risk of a product and an upper boundary condition for monetary price level is found.

Research limitations/implications
This research demonstrates exceptions to time pressure’s role in intensifying the zero price effect. Future research could focus on additional moderators of the effect such as the need for certainty and examine time pressure’s effect on in-app purchases.

Practical implications
These findings can be directly applied by marketers of digital products using a freemium pricing model who wants to use time pressure to create urgency with customers without pushing them toward the free version of a product.

Originality/value
This paper finds exceptions to the zero price effect where consumers exhibit a stronger preference for the paid (vs free) version of a product when under time pressure.
The profitability of trading strategies from sharia-compliant and conventional banks in the GCC: a comparative study
Authors: AlMujamed Hesham I. 
Published: April 2021

PurposeThe purpose of this research was to examine the effectiveness of filter rules and investigate the weak form of the efficient market hypothesis (EMH) on sample shares of shariah-compliant vs. conventional banks listed on the Gulf Cooperation Council (GCC) stock market.Design/methodology/approachNine trading filter strategies with different statistical analyses were used as defined in the literature (Fifieldet al., 2005; Almujamedet al., 2018). Daily closing equity prices of a sample of twenty shariah-compliant banks and twenty conventional banks were recorded over the 18-year period ending 31 December 2017.FindingsShares of shariah-compliant banks in the GCC were not weak-form efficient since trading based on past information was predictable, profitable and outperformed the corresponding naïve buy-and-hold trading strategy. Shares of conventional GCC banks underperformedResearch limitations/implicationsThis paper’s findings should be useful for central banks and capital market authorities in GCC countries for evaluation when considering new regulations or process changes. Limitations include small sample numbers and need for more recent evaluations of accounting disclosure levels. A wider range of data, statistical analyses and other trading strategies is needed. Potential investors (Muslim and non-Muslim), shariah supervisory boards, and preparers of financial statements can benefit from this study.Practical implicationsThe results suggest that selection of trading strategy affects the success of the rule and that mid-sized filters are the best.Originality/valueThis is an innovative study comparing performance of shariah-compliant and conventional banks under different filter rules.