bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exploring nest structures of acorn dwelling ants with X-ray microtomography and surface-based three-dimensional visibility graph analysis
Authors: Varoudis Tasos , Swenson Abigail G. , Kirkton Scott D. , Waters James S. 
Published: July 2018

The physical spaces within which organisms live affect their biology and in many cases can be considered part of their extended phenotype. The nests of social insect societies have a fundamental impact on their ability to function as complex superorganisms. Ants in many species excavate elaborate subterranean nests, but others inhabit relatively small pre-formed cavities within rock crevices and hollow seeds.Temnothoraxants, which often nest within acorns, have become a model system for studying collective decision making. While these ants have demonstrated remarkable degrees of rationality and consistent precision with regard to their nest choices, never before has the fine scale internal architecture and spatial organization of their nests been investigated. We used X-ray microtomography to record high-resolution three-dimensional (3D) scans ofTemnothoraxcolonies within their acorns. These data were then quantified using image segmentation and surface-based 3D visibility graph analysis, a new computational methodology for analysing spatial structures. The visibility graph analysis method integrates knowledge from the field of architecture with the empirical study of animal-built structures, thus providing the first methodological cross-disciplinary synergy of these two research areas. We found a surprisingly high surface area and degree of spatial heterogeneity within the acorn nests. Specific regions, such as those associated with the locations of queens and brood, were significantly more conducive to connectivity than others. From an architect's point of view, spatial analysis research has never focused on all-surface 3D movement, as we describe within ant nests. Therefore, we believe our approach will provide new methods for understanding both human design and the comparative biology of habitat spaces.This article is part of the theme issue ‘Interdisciplinary approaches for uncovering the impacts of architecture on collective behaviour'.
The architecture ofnetwork collective intelligence: correlations between social network structure, spatial layout and prestige outcomes in an office
Authors: Kabo Felichism 
Published: July 2018

A social network represents interactions and knowledge that transcend the intelligence of any of its individual members. In this study, I examine the correlations between thisnetwork collective intelligence, spatial layout, and prestige or status outcomes at the individual and team levels in an organization. I propose that spatially influenced social cognition shapes which individuals become members of prestigious teams in organizations, and the prestige perception of teams by others in the organization. Prestige is a pathway to social rank, influence and upward mobility for individuals in organizations. For groups, perceived prestige of work teams is related to how team members identify with the group and with their collaborative behaviours. Prestige enhances a team's survivability and its access to resources. At the individual level, I ran two-stage Heckman sample selection models to examine the correlation between social network position and the number of prestigious projects a person is a member of, contingent on the association between physical space and social ties and networks. At the team level, I used linear regressions to examine the relationship among network structure, spatial proximity and the perceived prestige or innovativeness of a project team. In line with my hypotheses, for individuals there is a significant correlation between physical space and social networks, and contingent on that, between social network positions and the number of prestigious projects that a person is a member of. Also in accordance with my hypotheses, for teams there is a significant correlation between network structure and spatial proximity, and perceived prestige. While cross-sectional, the study findings illustrate the importance of considering the spatial domain in examinations of how network collective intelligence is related to organizational outcomes at the individual and team levels.This article is part of the theme issue ‘Interdisciplinary approaches for uncovering the impacts of architecture on collective behaviour’.
Architecture, space and information in constructions built by humans and social insects: a conceptual review
Authors: Ireland Tim , Garnier Simon 
Published: July 2018

The similarities between the structures built by social insects and by humans have led to a convergence of interests between biologists and architects. This new, de facto interdisciplinary community of scholars needs a common terminology and theoretical framework in which to ground its work. In this conceptually oriented review paper, we review the terms ‘information’, ‘space’ and ‘architecture’ to provide definitions that span biology and architecture. A framework is proposed on which interdisciplinary exchange may be better served, with the view that this will aid better cross-fertilization between disciplines, working in the areas of collective behaviour and analysis of the structures and edifices constructed by non-humans; and to facilitate how this area of study may better contribute to the field of architecture. We then use these definitions to discuss the informational content of constructions built by organisms and the influence these have on behaviour, and vice versa. We review how spatial constraints inform and influence interaction between an organism and its environment, and examine the reciprocity of space and information on construction and the behaviour of humans and social insects.This article is part of the theme issue ‘Interdisciplinary approaches for uncovering the impacts of architecture on collective behaviour’.
Comparative Genomic Analysis of Bacillus thuringiensis Reveals Molecular Adaptations to Copper Tolerance
Authors: Yik Low Yi , Lie Chin Grace Joy Wei , Joseph Collin Glen , Rodrigues Kenneth Francis 
Published: July 2018

ABSTRACTBacillus thuringiensis is a type of Gram positive and rod shaped bacterium that is found in a wide range of habitats. Despite the intensive studies conducted on this bacterium, most of the information available are related to its pathogenic characteristics, with only a limited number of publications mentioning its ability to survive in extreme environments. Recently, a B. thuringiensis MCMY1 strain was successfully isolated from a copper contaminated site in Mamut Copper Mine, Sabah. This study aimed to conduct a comparative genomic analysis by using the genome sequence of MCMY1 strain published in GenBank (PRJNA374601) as a target genome for comparison with other available B. thuringiensis genomes at the GenBank. Whole genome alignment, Fragment all-against-all comparison analysis, phylogenetic reconstruction and specific copper genes comparison were applied to all forty-five B. thuringiensis genomes to reveal the molecular adaptation to copper tolerance. The comparative results indicated that B. thuringiensis MCMY1 strain is closely related to strain Bt407 and strain IS5056. This strain harbors almost all available copper genes annotated from the forty-five B. thuringiensis genomes, except for the gene for Magnesium and cobalt efflux protein (CorC) which plays an indirect role in reducing the oxidative stress that caused by copper and other metal ions. Furthermore, the findings also showed that the Copper resistance gene family, CopABCDZ and its repressor (CsoR) are conserved in almost all sequenced genomes but the presence of the genes for Cytoplasmic copper homeostasis protein (CutC) and CorC across the sample genomes are highly inconsonant. The variation of these genes across the B. thuringiensis genomes suggests that each strain may have adapted to their specific ecological niche. However, further investigations will be need to support this preliminary hypothesis.
The malaria-protective human glycophorin structural variant DUP4 shows somatic mosaicism and association with hemoglobin levels
Authors: Algady Walid , Louzada Sandra , Carpenter Danielle , Brajer Paulina , Färnert Anna , Rooth Ingegerd , Yang Fengtang , Shaw Marie-Anne , Hollox Edward J 
Published: July 2018

AbstractGlycophorin A and glycophorin B are red blood cell surface proteins that are both receptors for the parasitePlasmodium falciparum, which is the principal cause of malaria in sub-Saharan Africa. DUP4 is a complex structural genomic variant that carries extra copies of a glycophorin A - glycophorin B fusion gene, and has a dramatic effect on malaria risk by reducing the risk of severe malaria by up to 40%. Using fiber-FISH and Illumina sequencing, we validate the structural arrangement of the glycophorin locus in the DUP4 variant, and reveal somatic variation in copy number of the glycophorin A-glycophorin B fusion gene. By developing a simple, specific, PCR-based assay for DUP4 we show the DUP4 variant reaches a frequency of 13% in a village in south-eastern Tanzania. We genotype a substantial proportion of that village and demonstrate an association of DUP4 genotype with hemoglobin levels, a phenotype related to malaria, using a family-based association test. Taken together, we show that DUP4 is a complex structural variant that may be susceptible to somatic variation, and show that it is associated with a malarial-related phenotype in a non-hospitalized population.Significance statementPrevious work has identified a human complex genomic structural variant called DUP4, which includes two novel glycophorin A-glycophorin B fusion genes, is associated with a profound protection against severe malaria. In this study, we present data showing the molecular basis of this complex variant. We also show evidence of somatic variation in the copy number of the fusion genes. We develop a simple robust assay for this variant and demonstrate that DUP4 is at an appreciable population frequency in Tanzania and that it is associated with higher hemoglobin levels in a malaria-endemic village. We suggest that DUP4 is therefore protective against malarial anemia.
Same music, different emotions: assessing emotions and EEG correlates of music perception in children with ASD and typically developing peers
Authors: Portnova Galina , Maslennikova Alexandra , Varlamov Anton 
Published: July 2018

Purpose
The purpose of this paper is to assess emotional response to music and its EEG correlates in children with autism spectrum disorders (ASD).

Design/methodology/approach
Six musical fragments eliciting emotional states of calmness/serenity, sadness and anxiety/fear were presented to children with ASD (n=21, aged 5–9) and typically developing (TD) peers (n=21), while 19-channel EEG was recorded. Emotion self-reports were assessed using visual analogous scales.

Findings
Children with ASD assessed most music fragments similarly to their TD peers, with likelihood of EEG oscillatory patterns closely corresponding to emotion self-reports. Somewhat contrary to the expectations, a major difference was observed for one fragment only, which was identified as sad by TD children and adult neurotypical raters, but found “angry and frightening” by children with ASD, with EEG oscillatory response confirming greater cortical activation, particularly for the right hemisphere.

Research limitations/implications
The data suggest that children with ASD may have emotional reactions to music either similar or highly aberrant compared to TD peers, rather than having general difficulties in assessing emotions. The data should be confirmed by further studies, ideally involving high functioning adult autists.

Practical implications
The findings may increase the understanding of autists’ difficulties in perceiving prosodic nuances and reading emotional cues. The results can be taken into consideration when developing music-based interventions.

Originality/value
The findings show that music may be perceived by children with ASD in a unique way, which may be difficult to predict by neurotypical raters.
Examining workplace bullying-outcomes relationships among Indian managers
Authors: Rai Arpana , Agarwal Upasna A. 
Published: July 2018

PurposeThe purpose of this paper is to examine the relationship between workplace bullying and employee outcomes (intention to quit (ITQ), job satisfaction and work engagement) with psychological contract violation (PCV) as mediator and workplace friendship as moderator.Design/methodology/approachData were collected from 835 full-time Indian managerial employees working in different Indian organizations.FindingsResults revealed that PCV mediated bullying-outcomes (ITQ, job satisfaction and work engagement) relationship and effects of workplace bullying on proposed outcomes were weaker in the presence of high workplace friendship.Research limitations/implicationsA cross-sectional design and use of self-reported questionnaire data are a limitation of this study. As the study did not cover all sectors, the results of this study should be interpreted with caution.Originality/valueTo the best of the authors’ knowledge, this study is rare attempts to examine the mediating role of PCV and the moderating role of workplace friendship in bullying-outcomes relationships. This study also contributes in terms of its context and sample.
Break-out strategies of Chinese immigrant entrepreneurs in Australia
Authors: Wang Yurong , Warn James 
Published: July 2018

PurposeThe purpose of this paper is to examine how Chinese immigrant businesses in Australia were able to shift from low return start-up businesses and move to more competitive business models targeting mainstream clientele. The research aims to identify the factors enabling a break-out strategy for these entrepreneurs and whether a horizontal or vertical break-out was achieved.Design/methodology/approachA qualitative research method with in-depth interviews is employed. Interviews were conducted with 55 Chinese immigrant business owners in Sydney and Canberra.FindingsThe analysis found that a break-out strategy depended on a range of business activities, including innovation, marketing, networking and personnel strategies. Importantly, the current research found that these resources have varying degrees of importance in the different stages of the transition to the new business model. Accumulating sufficient financial capital was a fundamental enabler for a break-out strategy, followed by the capacity to learn and benefit from the experience of social networks.Research limitations/implicationsThe current research highlights the importance of financial capital and capacity to benefit from social networks as fundamental factors in enabling a break-out strategy. The benefit of the qualitative approach in obtaining rich data needs to be offset by potential limitations on generalisability. Future research could incorporate comparison between different size businesses as well as analysing factors underpinning a failure to successfully implement a break-out.Practical implicationsThe findings indicate that business support groups and policymakers could review access to financial capital for entrepreneurs seeking break-outs, consider improving opportunities for developing capacity to utilise heterogeneous social networks, and consider pathways for improving skills acquisition amongst immigrant entrepreneurs.Originality/valueThis paper contributes to the research literature on break-out strategies used by immigrant entrepreneurs by analysing, in detail, the transition steps undertaken by ethnic Chinese entrepreneurs in the shift to more competitive business models.
Linking infidelity stress, anxiety and depression: evidence from Pakistan married couples and divorced individuals
Authors: Azhar Aneesa , Abbas Jaffar , Wenhong Zhang , Akhtar Tanvir , Aqeel Muhammad 
Published: July 2018

Purpose
The purpose of this paper is to examine the moderating role of marital status between infidelity and development of stress, anxiety and depression. Additionally, to investigate the relationship among infidelity, stress, anxiety and depression among married couples and divorced individual.

Design/methodology/approach
A purposive sampling technique was used based on cross-sectional design. In total, 200 participants (married couples, n=100; divorced individuals, n=100) were incorporated from different NGO’s and welfare organizations of Rawalpindi, and Islamabad, Pakistan. Age ranged from 20 to 60 years. Two scales were used to measure the infidelity, stress, anxiety and depression in married couples and divorced couples.

Findings
The result revealed that emotional infidelity was positively significant correlated with stress (r=0.39, p=0.001), anxiety (r=0.40, p=0.001) and depression (r=0.35, p=0.001) for married couples. The result also displayed that sexual infidelity was positively significant correlated with stress (r=0.39, p=0.001), anxiety (r=0.39, p=0.001) and depression (r=0.34, p=0.001) for married couples. The result further elaborated that emotional infidelity and sexual infidelities were positively non-significant correlated with stress, anxiety and depression for divorced individuals. The analysis results revealed that marital status was moderator between infidelity and development of stress, anxiety and depression.

Research limitations/implications
This paper consisted of sample from three basic cities of Pakistan; thus, this paper finding may not be applied on whole population. Consequently, explanatory, exploratory and descriptive studies would be useful to enlighten the infidelity’s mechanism in prolongation of psychological distress across married couples and divorced individual in detail. Local tools to measure gender-related issues would be helpful in prospect while it combine cultural aspects as well.

Social implications
This study would be helpful in clinical settings to raise the awareness to effectively deal with their children.

Originality/value
The study recommended that those divorced individuals who had experienced either sexual infidelity or emotional infidelity were more likely to develop psychological problems as compared to married couples. This study would be helpful in clinical settings to raise the awareness to effectively deal with their children.
Managing emergent changes: ad hoc teams’ praxis and practices
Authors: Sjögren Peter , Fagerström Björn , Kurdve Martin , Callavik Magnus 
Published: July 2018

Purpose
The purpose of this paper is to explore how emergent changes are handled in research and development (R&D) projects. R&D projects’ business potential lies in their exploration of the unknown; conversely, this makes them uncertain endeavours, prone to emergent changes.

Design/methodology/approach
Uses a single-case-study design, based on a projects-as-practice perspective and a soft systems methodology (SSM) analysis, to map how ad hoc R&D teams handle emergent changes, specifically the solution identification and assessment phase and the implementation plan. An R&D project in the power industry, involving over 250 engineers, was analysed.

Findings
This paper shows how emergent changes are handled differently from initiated changes during the decision-making phase. The system analysis shows that the most critical factors for managing these changes are: collective reflection between project parties; and including experienced engineers in implementation-plan reviews.

Practical implications
The results are of relevance both to R&D managers aiming to improve team performance and to general project management. Informal notions of emergent changes can be formalised in the change request process. Weaknesses in the project team’s organisation are highlighted, and details of how of how to mitigate these are provided.

Originality/value
Combines engineering-design and project-management research on emergent changes, adding to the former regarding people–organisational and strategic issues. Furthers understanding of the projects-as-practice approach and emergent change (deviations) handling by ad hoc teams in a project environment. SSM has not previously been used to explore aspects of projects-as-practice, and this is a novel way of adding to the body of knowledge on project praxis and practise.
Women’s enactment of leadership in a heavily gender-marked Islamic context
Authors: Alhadhrami Abdelrahman , Goby Valerie Priscilla , Al-Ansaari Yahya 
Published: July 2018

PurposeDiverse cultural contexts with their distinct enactments of traditional gender inequity present unique constraints for female leaders. In Western contexts, the Christianity-inspired principle of equality of all humans remains a latent principle operative toward greater gender egalitarianism. This paper aims to examine female leaders within an Islamic context devoid of such espoused equality in which gender differences are enshrined in culture and law.Design/methodology/approachQuestionnaires based on the Competing Value Framework were developed and completed by 145 leaders and 365 employees from UAE companies. The salient findings of these responses were explored in six subsequent focus group discussions.FindingsThe study reveals no difference in how women perform leadership, except in terms of brokering skills in which women are perceived as superior to their male counterparts. Focus group discussion participants ascribed this difference to the Islamic benevolent sexism dynamic of according women greater respect, which facilitates their access to higher management.Originality/valueThis pioneering perspective of female leaders in a context of overt and sanctioned cultural and legal gender disparity contributes to scholarship on female leadership through a non-Western lens.
Institutional quality and trade in intermediate goods
Authors: Hyun Hea-Jung 
Published: July 2018

PurposeRecently published studies stress the importance of trade in intermediate goods. The literature on determinants of trade, however, have largely focused on the sources of comparative advantage in determining aggregate trade flows rather than trade in intermediate goods. The purpose of this paper is to examine the role of institutional quality and trade costs to explain the determinants of trade in intermediates.Design/methodology/approachThe simple model is based on the model of comparative advantage in the gravity framework used by Eaton and Kortum (2002) and Chor (2010) to relate trade flows of intermediate goods to institutional parameters, factor endowments and geography. The empirical tests use a data set containing 172 countries and 17 industries spanning ten years.FindingsThe results confirm the theoretical prediction that a country with higher institutional quality has a comparative advantage in institution-intensive goods and trade costs have a negative effect on trade. The author further finds that these effects are stronger in share of trade in intermediate goodsvis-à-visfinal goods.Originality/valueTo highlight the distinct nature of trade in intermediate goods, the author separates industry trade flows as intermediate input trade and final goods (consumption goods) trade to compare the importance of different sources of comparative advantage among different types of trade flows. Unlike Eaton and Kortum (2002) and Chor (2010) who used cross-sectional data for final goods trade, the ten-year industry-level panel data are used to compare the relative importance of institutions and geography as determinants in trade in intermediate goods compared to final goods trade and capture the macroeconomic time variant factors as well as industry–country pair characteristics. A significant caveat in gravity regression is that an empirical finding may often be driven by omitted variables. Inclusion of a set of country variables such as GDP, production costs and institutional level may still allow omitted variables to bias the estimation. To avoid this problem, the author includes a fixed effect of exporter and importer as well as industry and year, instead of a set of country characteristics.