bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sexual signals of fish species mimic the spatial statistics of their habitat: evidence for processing bias in animal signal evolution
Authors: Hulse Samuel. V. , Renoult Julien P. , Mendelson Tamra C. 
Published: July 2019

AbstractThe diversity of animal visual displays has intrigued scientists for centuries. Sexual selection theory has explained some of this diversity, yet most of this effort has focused on simple aspects of signal design, such as color. The evolution of complex patterns that characterize many sexual displays remains largely unexplained. The field of empirical aesthetics, a subdiscipline of cognitive psychology, has shown that humans are attracted to visual images that match the spatial statistics of natural scenes. We investigated whether applying this result to animals could help explain the diversification of complex sexual signaling patterns. We used Fourier analysis to compare the spatial statistics of body patterning in ten species of darters (Etheostoma spp.), a group of freshwater fishes with striking male visual displays, with those of their respective habitats. We found a significant correlation between the spatial statistics of darter patterns and those of their habitats for males, but not for females. Our results suggest that visual characteristics of natural environments can influence the evolution of complex patterns in sexual signals.
Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model
Authors: Han Zhoupeng , Mo Rong , Yang Haicheng , Hao Li 
Published: July 2019

PurposeThree-dimensional computer-aided design (CAD) assembly model has become important resource for design reuse in enterprises, which implicates plenty of design intent, assembly intent, design experience knowledge and functional structures. To acquire quickly CAD assembly models associated with specific functions by using product function requirement information in the product conceptual design phase for model reuse, this paper aims to find an approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model before functional semantic-based assembly retrieval.Design/methodology/approachAn approach for structure-function correlations analysis and functional semantic annotation of CAD assembly model is proposed. First, the product knowledge model is constructed based on ontology including design knowledge and function knowledge. Then, CAD assembly model is represented by part attributed adjacency graph and partitioned into multiple functional regions. Assembly region and flow-activity region are defined for structure-function correlations analysis of CAD assembly model. Meanwhile, the extraction process of assembly region and flow-activity region is given in detail. Furthermore, structure-function correlations analysis and functional semantic annotation are achieved by considering comprehensively assembly structure and assembled part shape structure in CAD assembly model. After that, a structure-function relation model is established based on polychromatic sets for expressing explicitly and formally relationships between functional structures, assembled parts and functional semantics.FindingsThe correlation between structure and function is analyzed effectively, and functional semantics corresponding to structures in CAD assembly model are labeled. Additionally, the relationships between functional structures, assembled parts and functional semantics can be described explicitly and formally.Practical implicationsThe approach can be used to help designers accomplish functional semantic annotation of CAD assembly models in model repository, which provides support for functional semantic-based CAD assembly retrieval in the product conceptual design phase. These assembly models can be reused for product structure design and assembly process design.Originality/valueThe paper proposes a novel approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model. Functional structures in assembly model are extracted and analyzed from the point of view of assembly structure and function part structure. Furthermore, the correlation relation between structures, assembled parts and functional semantics is expressed explicitly and formally based on polychromatic sets.
Position-based impedance force controller with sensorless force estimation
Authors: Yuan Jianjun , Qian Yingjie , Gao Liming , Yuan Zhaohan , Wan Weiwei 
Published: July 2019

Purpose
This paper aims to purpose an improved sensorless position-based force controller in gravitational direction for applications including polishing, milling and deburring.

Design/methodology/approach
The first issue is the external force/torque estimation at end-effector. By using motor’s current information and Moore-Penrose generalized inverse matrix, it can be derived from the external torques of every joints for nonsingular cases. The second issue is the force control strategy which is based on position-based impedance control model. Two novel improvements were made to achieve a better performance. One is combination of impedance control and explicit force control. The other one is the real-time prediction of the surface’s shape allowing the controller adaptive to arbitrary surfaces.

Findings
The result of validation experiments indicates that the estimation of external force and prediction of surface’s shape are credible, and the position-based constant contact force controller in gravitational direction is functional. The accuracy of force tracking is adequate for targeted applications such as polishing, deburring and milling.

Originality/value
The value of this paper lies in three aspects which are sensorless external force estimation, the combination of impedance control and explicit force control and the independence of surface shape information achieved by real-time surface prediction.
Corrosion behavior of the joints of carbon fiber reinforced polymers with DP590 steel and Al6022 alloy
Authors: Zhang Chi , Zheng Dajiang , Song Guang-Ling , Guo Yang , Liu Ming , Kia Hamid 
Published: July 2019

Purpose
This study aims to propose a simple experimental method to distinguish the galvanic corrosion, crevice corrosion and self-corrosion in metal/carbon fiber reinforced polymer (CFRP) joints.

Design/methodology/approach
The corrosion behaviors of four different galvanic couples, whose anodes were Zn-coated DP590 steel and Al 6022, and cathodes were two kinds of CFRP, were investigated in immersion and GMW14872 cyclic conditions.

Findings
The results showed that the galvanic corrosion caused by direct contact between CFRP and metals was more serious than that caused by the jointing bolts. The corrosion damage caused by crevice corrosion was severer than that caused by galvanic corrosion. Self-corrosion was also significant, particularly under the cyclic salt spray condition.

Practical implications
Cyclic salt spray test may more reliably simulate the galvanic corrosion of a joint in industrial service environments, and real corrosion damage may be underestimated by a galvanic current measurement.

Originality/value
A deeper understanding of different corrosion mechanisms involved in CFRP/metal joints under different service conditions in industry has been given.
Low-power electrical impedance tomography spectroscopy
Authors: Padilha Leitzke Juliana , Zangl Hubert 
Published: July 2019

Purpose
This paper aims to present an approach based on electrical impedance tomography spectroscopy (EITS) for the determination of water and ice fraction in low-power applications such as autarkic wireless sensors, which require a low computational complexity reconstruction approach and a low number of electrodes. This paper also investigates how the electrode design can affect the reconstruction results in tomography.

Design/methodology/approach
EITS is performed by using a non-iterative method called optimal first order approximation. In addition to that, a planar electrode geometry is used instead of the traditional circular electrode geometry. Such a structure allows the system to identify materials placed on the region above the sensor, which do not need to be confined in a pipe. For the optimization, the mean squared error (MSE) between the reference images and the obtained reconstructed images was calculated.

Findings
The authors demonstrate that even with a low number of four electrodes and a low complexity reconstruction algorithm, a reasonable reconstruction of water and ice fractions is possible. Furthermore, it is shown that an optimal distribution of the sensor electrodes can help to reduce the MSE without any costs in terms of computational complexity or power consumption.

Originality/value
This paper shows through simulations that the reconstruction of ice and water mixtures is possible and that the electrode design is a topic of great importance, as they can significantly affect the reconstruction results.
A nonstandard finite difference technique for singular Lane-Emden type equations
Authors: Chapwanya Michael , Dozva Robert , Muchatibaya Gift 
Published: July 2019

PurposeThis paper aims to design new finite difference schemes for the Lane–Emden type equations. In particular, the authors show that the schemes are stable with respect to the properties of the equation. The authors prove the uniqueness of the schemes and provide numerical simulations to support the findings.Design/methodology/approachThe Lane–Emden equation is a well-known highly nonlinear ordinary differential equation in mathematical physics. Exact solutions are known for a few parameter ranges and it is important that any approximation captures the properties of the equation it represent. For this reason, designing schemes requires a careful consideration of these properties. The authors apply the well-known nonstandard finite difference methods.FindingsSeveral interesting results are provided in this work. The authors list these as follows. Two new schemes are designed. Mathematical proofs are provided to show the existence and uniqueness of the solution of the discrete schemes. The authors show that the proposed method can be extended to singularly perturbed equations.Originality/valueThe value of this work can be measured as follows. It is the first time such schemes have been designed for the kind of equations.
A review of entrepreneurship education research in the special issues of Education + Training journal
Authors: Aamir Suhaib , Atsan Nuray Fatma , Erdem Ayfer Ferda 
Published: July 2019

Purpose
The purpose of this paper is to discuss the course of entrepreneurship education (EE) research within the framework of entrepreneurship. The study is based on the results of previous research published in the annual double special issues of Education + Training (E+T) journal. In this context, it examines the role of EE at different levels of education; EE interactions and approaches; the effects of the variety of variables on EE; and the grouping of these variables into clusters.

Design/methodology/approach
The study uses literature review to categorize 59 papers into clusters based on the associations of different variables to EE which have been extracted from the annual double special issues of E+T journal. These special issues were published during the period of 2011–2018. All the reviewed papers were empirical in nature.

Findings
The study has identified 47 variables from 59 empirical papers, which have been grouped into 6 clusters around EE. Based on different levels of studies such as primary, secondary and tertiary levels, the examined papers discuss a variety of variables with reference to their positive, negative, significant or non-significant relationships to EE.

Originality/value
The paper demonstrates the progress of the knowledge produced with regard to EE research in recent years. It is among the very few studies to focus on the discrete collection of special issue papers.
Identifying the influencing factors on the quality of China’s forestry exports
Authors: Cheng Baodong , Liu Sitong , Xiong Lichun , Wang Fengting , Qin Guangyuan , Yue Danmeng , Zhang Huaxing , Yu Chang 
Published: July 2019

Purpose
China is not only the biggest importing country of the raw materials of forest products, but also the biggest exporting country of intermediate and final forest products. The paper aims to discuss these issues.

Design/methodology/approach
The authors use the Khandelwal (2010) method and trade data from 2000 to 2014 of bilateral forest products between China and ten main developed countries to evaluate the quality of China’s forestry imports and exports. Subsequently, the influencing factors of product quality are analyzed.

Findings
The results show that the current export quality of plywood and fiberboard is decreasing, and the export quality of particleboard and paper products is on the rise. A further study finds that several factors have the positive effects on the quality of forestry exports, including gross domestic product of the importing country, forestry export value of the importing country as well as the number of forestry higher education graduates of the exporting country. Moreover, the study also finds that the status of an Asia-Pacific Economic Cooperation member has a negative effect on the quality of forestry exports, while the distance cost has a negative influence on fiberboard, paper and paperboard.

Practical implications
The study suggests that China needs to strengthen the research and development investment on forest products, and improve the quality of forest products to promote the trade development of forestry exports.

Originality/value
The existing literature has not shown much research regarding the quality of China’s forestry exports through econometric analysis. Therefore, the research results provide new perspective about the influencing factors on China’s forestry trade activities.
Drivers and outcomes of consumer engagement
Authors: Glavee-Geo Richard , Shaikh Aijaz A. , Karjaluoto Heikki , Hinson Robert Ebo 
Published: July 2019

Purpose
The purpose of this paper is to examine the drivers of consumer engagement and its consequences via the experiences of mobile money services’ users in Ghana and to discuss its implications for the society, financial service innovation, delivery and operations.

Design/methodology/approach
A pre-tested survey instrument was used with a sample of 595 mobile money services users in Ghana. SmartPLS application was used to analyze the data and report findings.

Findings
The study shows that perceived risk, consumer empowerment, subjective norm, performance expectancy and effort expectancy influence the affect component of consumer engagement and explain around half of its variance. The effect of perceived risk on consumer engagement was counterintuitive. Perceived risk was significant and positive for cognitive processing, whereas the effect was significant but negative for affect. The authors found support for the positive effect of cognitive processing on advocacy intention but no support for its effect on continuous usage. By contrast, affect strongly influenced both advocacy intention and continuous usage of mobile money services.

Practical implications
The authors highlight the implications of mobile money services to business and marketing/service managers, policy makers, non-banking entities (such as telecoms and financial technology firms) and to the society in general. The authors provide important insights into how service providers can manage consumer engagement process and formulate marketing strategies to target and promote this simple, but innovative service to consumers. Moreover, the authors discuss the societal implications of the study in Ghana, a developing country. The authors recommend several options for future studies in order to stimulate the research agenda on mobile financial services in general.

Originality/value
The present study shows that although mobile money was initially introduced to help consumers who hitherto have no access to formal banking services, this form of banking has become increasingly popular among various consumer segments as its usage and adoption has increased multifold largely in emerging and developing countries. The main contribution of this study is the development and testing of the “mobile money customer engagement model.” Moreover, this study shows the key factors that influence the engagement process and the effects of these factors as analyzed within the context of a developing country.
Service quality in a post-crisis context: emotional effects and behaviours
Authors: Arguello Manuel Idrovo , Monferrer Tirado Diego , Estrada Guillén Marta 
Published: July 2019

Purpose
The purpose of this paper is to analyse the influence of service quality dimensions as determinants of the emotional and relational behaviours experienced by the client in bank branches in the post-crisis context experienced by Spanish financial institutions.

Design/methodology/approach
Data taken from a total of 1,125 customers were analysed through structural equations modelling (EQS6.1) to test the relationships of the proposed model’s variables.

Findings
The results support the hypotheses stated, with the exception of the influence of a service quality dimension (servicescape) on emotions during the service. In fact, the dimensions of the service quality of an intangible nature (personnel, outcome and social) are determinants of the positive emotions and relational behaviours of clients around the service provided by the branches. For its part, servicescape quality, of a more tangible nature, exerts indirect influence on the other dimensions that compose the quality of service.

Practical implications
This paper provides senior bank executives established evidence on the degree of influence of the different dimensions in relation to the quality of service in the bank branch. Furthermore, it emphasises the importance of emotional factors during service as essential elements in strengthening customer–staff relationships under a non-transactional dynamic.

Originality/value
This paper has adopted an analytical holistic, theoretical and empirical perspective on the impact of the different dimensions of service quality (servicescape, personnel, outcome and social) as well as to the emotions experienced by banking customers during services and its lasting effect on customer engagement and customer advocacy.
When and how cognitive conflict benefits cross-functional project team innovation
Authors: Guo Haiyan , Zhang Lianying , Huo Xiaoyan , Xi Guannan 
Published: July 2019

Purpose
This research aims to comprehensively investigate when and how cognitive conflict benefits team innovation in cross-functional project teams (CFPTs), by exploring the moderating role of knowledge leadership and dual mediation mechanisms of elaboration of task-related information/knowledge and affective conflict.

Design/methodology/approach
All hypotheses have been empirically tested by using structural equation model to analyze the quantitative data from a questionnaire survey covering 73 CFPTs in China.

Findings
Results indicate that knowledge leadership positively moderates the relationship between cognitive conflict and CFPT innovation. This moderating effect is directly or indirectly revealed by the dual mediating roles of task-related information/knowledge elaboration and affective conflict, which are two processes manifesting whether cognitive conflict can or cannot be incorporated into team innovation.

Research limitations/implications
Despite the external validity of results limited by convenient sampling method, the findings offer implications for promoting CFPT innovation. This can be achieved by developing competent knowledge leadership into team sensegiver, dissent reconciler and facilitator to accentuate benefits of cognitive conflict in information/knowledge elaboration and attenuate the likelihood of escalating to affective conflict.

Originality/value
This study advances the understanding of why cognitive conflict has an equivocal effect on team innovation in the context of CFPT by originally revealing how leaders’ role in information/knowledge management acts as a contingency and suggesting the dual mediating mechanisms that reflect the contingent impact. Project-based teams or organizations, characterized by cognitive clashes, can enhance innovation performance by shaping the meaningfulness of information/knowledge activities triggered by cognitive conflict.
Talent without power
Authors: Mittal Shashank 
Published: July 2019

PurposeThis study aims to look at the interaction dynamics among engineering professionals from the lens of status hierarchies and derive on the role of intragroup conflicts prevalent in engineering teams. It develops and tests a comprehensive moderated-mediation model combining interpersonal status dynamics (of talent and conflicts prevalent within the team) with team external power dynamics (with other teams) and their resultant effect on team performance through the intragroup conflicts.Design/methodology/approachData at team level from 1,265 members belonging to 218 engineering teams were used for hypothesis testing.FindingsProcess and status conflicts fully explain the negative effect of having more talented members in teams on team performance. High talented teams have lower levels of process and status conflicts and higher levels of performance when they have high power.Research limitations/implicationsThis paper contributes to the literature on engineering teams, team status, power and conflicts.Practical implicationsThis paper advises manager on where to exactly look for problems in the internal working of talented teams and conditions that could negatively impact their performance.Originality/valueResearch on teams’ internal composition and team performance link remains inconclusive. The established pattern of thinking in both practice and research is that having more talented members in the engineering teams is attached to superior performance. Whereas it is often the case that even after having multiple talented members, teams are not able to perform well. With some exceptions, studies have not paid attention to the dynamics of having more talented members and its flip side on team performance.