bluuebunny/crossref_metadata_2025 huggingface dataset:
Data matters: how earth and environmental scientists determine data relevance and reusability
Authors: Murillo Angela P.
Published: August 2019

Purpose

The purpose of this study is to examine the information needs of earth and environmental scientists regarding how they determine data reusability and relevance. Additionally, this study provides strategies for the development of data collections and recommendations for data management and curation for information professionals working alongside researchers.

Design/methodology/approach

This study uses a multi-phase mixed-method approach. The test environment is the DataONE data repository. Phase 1 includes a qualitative and quantitative content analysis of deposited data. Phase 2 consists of a quasi-experiment think-aloud study. This paper reports mainly on Phase 2.

Findings

This study identifies earth and environmental scientists’ information needs to determine data reusability. The findings include a need for information regarding research methods, instruments and data descriptions when determining data reusability, as well as a restructuring of data abstracts. Additional findings include reorganizing of the data record layout and data citation information.

Research limitations/implications

While this study was limited to earth and environmental science data, the findings provide feedback for scientists in other disciplines, as earth and environmental science is a highly interdisciplinary scientific domain that pulls from many disciplines, including biology, ecology and geology, and additionally there has been a significant increase in interdisciplinary research in many scientific fields.

Practical implications

The practical implications include concrete feedback to data librarians, data curators and repository managers, as well as other information professionals as to the information needs of scientists reusing data. The suggestions could be implemented to improve consultative practices when working alongside scientists regarding data deposition and data creation. These suggestions could improve policies for data repositories through direct feedback from scientists. These suggestions could be implemented to improve how data repositories are created and what should be considered mandatory information and secondary information to improve the reusability of data.

Social implications

By examining the information needs of earth and environmental scientists reusing data, this study provides feedback that could change current practices in data deposition, which ultimately could improve the potentiality of data reuse.

Originality/value

While there has been research conducted on data sharing and reuse, this study provides more detailed granularity regarding what information is needed to determine reusability. This study sets itself apart by not focusing on social motivators and demotivators, but by focusing on information provided in a data record.
How reading in single- and multiple-column types influence our cognitive load: an EEG study
Authors: Al-Samarraie Hosam , Eldenfria Atef , Zaqout Fahed , Price Melissa Lee
Published: August 2019

Purpose

The impact of different screen-based typography styles on individuals’ cognitive processing of information has not been given much consideration in the literature, though such differences would imply different learning outcomes. This study aims to enrich the current understanding of the impact of reading in single- and multiple-column types on students’ cognitive processing.

Design/methodology/approach

An electroencephalogram (EEG) was used to record and analyze the brain signals of 27 students while reading from single- and multiple- column layouts.

Findings

The results showed a significant difference in students’ cognitive load when reading text from different types of columns. All students exerted less processing efforts when text was presented in two-column format, thus experiencing less cognitive load.

Originality/value

Using EEG, this study examined the neural consequences of reading in single- and multiple-column types on cognitive load during reading. The findings can be used to enrich the current instructional design practices on how different typographical formats facilitate learners’ cognitive performance.
Weapon equipment management cost prediction based on forgetting factor recursive GM (1,1) model
Authors: Liu Subing , Chunwu Yin , Dazhi Cao
Published: August 2019

Purpose

The purpose of this paper is to provide a new recursive GM (1,1) model based on forgetting factor and apply it to the modern weapon and equipment system.

Design/methodology/approach

In order to distinguish the contribution of new and old data to the grey prediction model with new information, the authors add forgetting factor to the objective function. The purpose of the above is to realize the dynamic weighting of new and old modeling data, and to gradually forget the old information. Second, the recursive estimation algorithm of grey prediction model parameters is given, and the new information is added in real time to improve the prediction accuracy of the model.

Findings

It is shown that the recursive GM (1,1) model based on forgetting factor can achieve both high effectiveness and high efficiency.

Originality/value

The paper succeeds in proposing a recursive GM (1,1) model based on forgetting factor, which has high accuracy. The model is applied to the field of modern weapon and equipment system and the result the model is better than the GM(1,1) model. The experimental results show the effectiveness and the efficiency of the prosed method.
Application of different numerical models capable to simulate combustion of alternative fuels in internal combustion engine
Authors: Adamczyk Wojciech Piotr , Kruczek Grzegorz , Bialecki Ryszard , Przybyła Grzegorz
Published: August 2019

Purpose

The internal combustion engine operated on gaseous fuels shows great potential in terms of integration of the renewable and traditional sources for an effective solution for clean energy production challenge. Different fuel mixtures that can be used to power the engine are characterized by various combustion properties, which can affect its overall efficiency. The purpose of this paper is to provide reasonable answer, how the operation condition can change due to different fuel, without enormous cost of prototyping processes using physical models a digital model can be seen as promising technique.

Design/methodology/approach

Presented work discusses the application, and extensive description of two commercial codes Ansys Fluent and Forte for modeling stationary engine fueled by compressed natural gas (CNG) and biogas. To check the model accuracy, all carried out numerical results were compared against experimental data collected at in-house test rig of single cylinder four stroke engine. The impacts of tested gaseous fuel on the engine working conditions and emission levels were investigated.

Findings

Carried out simulations showed good agreement with experimental data for investigated cases. Application on numerical models give possibility to visualize flame front propagation and pollutant formation for tested fuels. The biogas fuel has shown the impaired early flame phase, which led to longer combustion, lower efficiency, power output, repeatability and in some cases higher HC and carbon monoxide (CO) emissions as a result of combustion during the exhaust stroke. Looking at the CO formation it was observed that it instantly accrue with flame front propagation as a result of methane oxidation, while for NOx formation revers effect was seen.

Originality/value

The application of new approach for modeling combustion process in stationary engines fueled by CNG and alternative biogas fuel has been discussed. The cons and pros of the Forte code in terms of its application for engine prototaping process has been discussed.
New business models in supply chains: a bibliometric study
Authors: Delafenestre Régis
Published: August 2019

Purpose

The purpose of this paper is to find and classify the most relevant works in the literature on the latest technologies applied in global supply chains. To help future researchers find the most relevant the authors according to the authors’ research interest quickly and to provide insights into the most promising areas.

Design/methodology/approach

The authors provide a bibliometric analysis of 292 documents referenced in the Scopus® database clustering by relatedness of works and keywords.

Findings

The authors present insights and deduce new perspectives in the potential search for new business models. The authors show that in specific fields, some works and authors have a much greater influence than others.

Research limitations/implications

Some documents published on the web or in paper form may be missing. The analyses largely depend on the choice of keywords. Another selection might have shown different results.

Practical implications

This paper provides the basis for new research in applications of the latest technologies in supply chains and corresponding new business models.

Originality/value

This work is a first effort to help researchers make sense of the mass of published scientific results on new technologies and their impact on new supply chain business models.
Transformational leadership, customer citizenship behavior, employee intrinsic motivation, and employee creativity
Authors: Minh-Duc Le , Huu-Lam Nguyen
Published: August 2019

Purpose

The purpose of this paper is to investigate the simultaneous relationships among transformational leadership (TFL), customer citizenship behavior (CCB), employee intrinsic motivation (IM) and employee creativity (EC).

Design/methodology/approach

This study was conducted in companies (hotels and tour operators) from the hospitality sector in Vietnam. The respondents were selected based on convenience sampling. A cross-sectional survey design and questionnaire method was used for data collection.

Findings

The results of the empirical analysis suggest that: employee IM is significantly associated with EC, both TFL and CCB are positively related to employee IM and EC and employee IM positively mediates the effects of both TFL and CCB on EC.

Practical implications

The results may help managers focus on TFL behavior, CCB and employee IM to achieve higher EC.

Originality/value

This investigation is expected to be new and valuable. Research on relationships of CCB, employee IM and EC is of significant importance but has not been examined to date. It is hoped that this study addresses this important gap in the marketing literature.
Tackling service quality in the telecommunication B2B market
Authors: Tas Aysegul , Ergin Elif Akagün , Kurtulmuşoğlu Feride Bahar , Sahin Omer Faruk
Published: August 2019

Purpose

This study will attempt to focus on how vendors serve operators, as operator service quality starts with vendor’s technology infrastructure and service quality. The purpose of this study is to exhibit the most important vendor service quality items and dimensions for the operators in the telecommunications industry.

Design/methodology/approach

A total of 268 employees from various age groups, cities, job levels and departments participated in the survey.

Findings

Expected service quality results indicated that operators need high service quality. When telecommunication needs of subscribers are taken into account, it is normal for operators to expect high service quality from vendors. Results also reveal that being dependable and providing continuous support are critical for the telecommunications industry. Perceived service quality results demonstrate that customer expectations failed to be satisfied. In this study conducted in the telecommunications market, the expectations of operator employees regarding vendors is shaped under two dimensions. These dimensions are employee and service center features and provider timeliness and accuracy. When Topsis method was used to determine the most important vendor characteristics, timeliness and trust were identified as the top two criteria.

Originality/value

To the best of the authors’ knowledge, this study is the first to put forth the most important vendor service quality items and dimensions for the operators in the telecommunications industry.
Antecedents of SMEs’ satisfaction and loyalty towards Islamic microfinance
Authors: Rokhman Wahibur , Abduh Muhamad
Published: August 2019

Purpose

The purpose of this paper is to examine factors influencing the level of satisfaction of Islamic microfinance customers and their loyalty toward their patronized institution in Central Java, Indonesia.

Design/methodology/approach

The target population is all customers of Islamic microfinance institutions in Central Java, Indonesia. A sample of 300 respondents is selected for this study using purposive sampling and only 246 data are used in the analysis. The data are then analyzed using structural equation model with cost of loan, risk of loan, loan repayment, family welfare and Shariah issues as exogenous variables and satisfaction and loyalty as endogenous variables tested in the model.

Findings

The findings have shown that there is a significant effect of cost of loan, risk of loan and loan repayment upon the customers’ satisfaction and from the customers’ satisfaction toward the customers’ loyalty. The Shariah issues and family welfare were statistically insignificant to predict the customers’ satisfaction, which imply a big homework of Islamic finance academics and practitioners in Indonesia to educate people about Islamic finance and to show the real positive impact of Islamic finance models toward poverty.

Originality/value

Central Java is the province with a large number of SME and microfinance institutions, both conventional and Islamic, in Indonesia. This study provides a good insight for researchers seeking updated information about microfinance in Indonesia.
Labour economy: do unions really influence sourcing decisions?
Authors: Boccalatte Kaylee
Published: August 2019

Purpose

This article aims to uncover the influence employment relations, and more specifically union avoidance has on the decision to outsource road transport. Employment Relations literature often attributes outsourcing decision to decollectivist strategies, minimising the influence unions have in their workplaces or to labour cost reduction objectives. These explanations, however, fail to explain why some firms do not outsource when their sourcing structure incurs greater union involvement or industrial relation.

Design/methodology/approach

The author examines two case studies. Company A and Company B, while operating in a similar environment, selling similar products and offering a similar home delivery service have adopted different governance structures for their outbound transport function; Company A has integrated while Company B has outsourced. Was union avoidance or transaction cost reductions central to their respective decisions?

Findings

Company A did not integrate in an effort to circumvent union intervention or reduce costs. Company A’s integration, on the contrary, increased the firm’s dealings with unions, as well as regulatory compliance and transaction costs. Company B’s decision to outsource yielded similar results. While not experiencing an increase in union intervention, the firm failed to reduce the density of unionised labour and by maintaining ownership of delivery vehicles, saw a rise in costs.

Originality/value

Union avoidance is not an explanatory factor in the sourcing decision, nor is it possible to explain through transaction cost economics. Explication for outcomes lies in value enhancement. Companies are willing to incur higher employment relations and transport costs if the result is higher value capture.
Microstructural evolution and microhardness response of H11 hot forging dies
Authors: Joshy Sam , K.R. Jayadevan , A. Ramesh , D. Mahipal
Published: August 2019

Purpose

The prime task of research in hot forging industry is to improve the service life of forging dies. The in-service microstructural changes that may occur in a die during hot forging is expected to significantly affect the service life. The purpose of this work is to analyse the microstructural evolution of double tempered hot forging dies in a real industrial environment, and the correlation of microstructural and microhardness evolution to the in-service wear and plastic deformation.

Design/methodology/approach

Specific hot forging tests were carried out on double tempered AISI H11 chromium tool steel for 100, 500 and 1,000 forging strokes. Macro analysis was conducted on die cross section to analyse the wear and plastic deformation at different stages of forging cycles. Microhardness and microstructural analyses were performed on the die surface after these forging tests.

Findings

The macro analysis on the transverse section of dies shows that wear is predominant during initial forging strokes, whereas plastic deformation is observed in later stages. Microstructural analyses demonstrate that during first 500 forging cycles, carbide population decreases at 63 per cent higher rate as compared to corresponding drop during 501 to 1,000 forging cycles. Additionally, the carbide size increases at all stages of forging cycle. Further, microstructural images from dies after 1,000 forging strokes show clustering and spherodisation of carbides by which the “blocky”-shaped carbides in pre-forging samples had spherodised to form “elongated spherical” structures.

Practical implications

The findings of this work can be used in hot forging industries to predict amount of wear and plastic deformation at different stages of service. From the results of this work, the service life of double tempered H11 hot forging dies used in forging without lubrication is within 501 to 1,000 forgings.

Originality/value

Most of the literatures are focussed on the cyclic softening of material at constant temperature. This work analyses the microstructural evolution of double tempered hot forging dies in a real industrial environment and correlates the microstructural and microhardness evolution to the in-service wear and plastic deformation.
Dirty work: cultural iconography and working‐class pride in industrial apprenticeships
Authors: Pleasant Emma
Published: August 2019

In the seemingly routine and the everyday, lie layers of cultural and social symbolism. So it is with dirt. This article examines the social and cultural roles of dirt within socialization practices in working‐class industrial and ex‐industrial communities. Drawn from oral history accounts with 46 former and current engineering apprentices, the discussion demonstrates dirt as a concept and a practicality, and how the idea of ‘getting dirty’ provided a cultural imagery used to renegotiate moral boundaries that devalue working class, masculine experiences and identities. Building on from the work of Skeggs (1997, 2004, 2011), it demonstrates the lived experience of value within the industrial workplace past and present. Through dirt, the role of cultural artefacts and iconography within working‐class experience and workplace training is explored. Additionally, the role of a cultural icon like dirt in the intergenerational dialogues of workplace communities is given new attention. In doing so the article argues that while after decades of underinvestment in apprenticeships as a model for training in the UK, a recent resurgence in interest can go some way in overcoming the long‐term effects of the loss of large‐scale industrial work. However, the cultures of work attached to the apprenticeships of the past are, within deindustrialization, much more complicated to develop or recreate.
Matrix methods for stochastic dynamic programming in ecology and evolutionary biology
Authors: Reimer Jody R. , Mangel Marc , Derocher Andrew E. , Lewis Mark A.
Published: August 2019

Organisms are constantly making tradeoffs. These tradeoffs may be behavioural (e.g. whether to focus on foraging or predator avoidance) or physiological (e.g. whether to allocate energy to reproduction or growth). Similarly, wildlife and fishery managers must make tradeoffs while striving for conservation or economic goals (e.g. costs vs. rewards). Stochastic dynamic programming (SDP) provides a powerful and flexible framework within which to explore these tradeoffs. A rich body of mathematical results on SDP exist but have received little attention in ecology and evolution.

Using directed graphs – an intuitive visual model representation – we reformulated SDP models into matrix form. We synthesized relevant existing theoretical results which we then applied to two canonical SDP models in ecology and evolution. We applied these matrix methods to a simple illustrative patch choice example and an existing SDP model of parasitoid wasp behaviour.

The proposed analytical matrix methods provide the same results as standard numerical methods as well as additional insights into the nature and quantity of other, nearly optimal, strategies, which we may also expect to observe in nature. The mathematical results highlighted in this work also explain qualitative aspects of model convergence. An added benefit of the proposed matrix notation is the resulting ease of implementation of Markov chain analysis (an exact solution for the realized states of an individual) rather than Monte Carlo simulations (the standard, approximate method). It also provides an independent validation method for other numerical methods, even in applications focused on short‐term, non‐stationary dynamics.

These methods are useful for obtaining, interpreting, and further analysing model convergence to the optimal time‐independent (i.e. stationary) decisions predicted by an SDP model. SDP is a powerful tool both for theoretical and applied ecology, and an understanding of the mathematical structure underlying SDP models can increase our ability to apply and interpret these models.
Do junior academic bioethicists have an obligation to be activists?
Authors: Moorlock Greg
Published: August 2019

Activism and bioethics have enjoyed a somewhat strained relationship. In this paper, I consider activism specifically from the perspective of junior academics. I will argue that although there may be a prima facie duty for bioethicists to be activists, countervailing considerations for junior academics may mean that they, in particular, should refrain from undertaking activist activities. I will argue this on the basis of two key claims. First, I argue that activism may come at a potential cost to the academics who undertake it, and that these costs are potentially of greatest detriment to junior academics undertaking activism. Second, I argue that junior academics are likely to be less effective activists than established academics. Moreover, undertaking activism as a junior academic may prevent one from becoming an effective activist later. Finally, I will discuss the implications of this argument for activist commitments later in one’s career.
Risk‐adapted stereotactic body radiation therapy for central and ultra‐central early‐stage inoperable non‐small cell lung cancer
Authors: Meng Mao‐Bin , Wang Huan‐Huan , Zaorsky Nicholas G. , Sun Bing‐Shen , Zhu Lei , Song Yong‐Chun , Li Feng‐Tong , Dong Yang , Wang Jing‐Sheng , Chen Hua‐Ming , Yu Xu‐Yao , Yuan Zhi‐Yong
Published: August 2019

To determine the therapeutic efficacy and safety of risk‐adapted stereotactic body radiation therapy (SBRT) schedules for patients with early‐stage central and ultra‐central inoperable non‐small cell lung cancer. From 2006 to 2015, 80 inoperable T1‐2N0M0 NSCLC patients were treated with two median dose levels: 60 Gy in six fractions (range, 48‐60 Gy in 4‐8 fractions) prescribed to the 74% isodose line (range, 58%‐79%) for central lesions (ie within 2 cm of, but not abutting, the proximal bronchial tree; n = 43), and 56 Gy in seven fractions (range, 48‐60 Gy in 5‐10 fractions) prescribed to the 74% isodose line (range, 60%‐80%) for ultra‐central lesions (ie abutting the proximal bronchial tree; n = 37) on consecutive days. Primary endpoint was overall survival (OS); secondary endpoints included progression‐free survival (PFS), tumor local control rate (LC), and toxicity. Median OS and PFS were 64.47 and 32.10 months (respectively) for ultra‐central patients, and not reached for central patients. Median time to local failure, regional failure, and any distant failures for central versus ultra‐central lesions were: 27.37 versus 26.07 months, 20.90 versus 12.53 months, and 20.85 versus 15.53 months, respectively, all P < .05. Multivariate analyses showed that tumor categorization (ultra‐central) and planning target volume ≥52.76 mL were poor prognostic factors of OS, PFS, and LC, respectively (all P < .05). There was one grade 5 toxicity; all other toxicities were grade 1‐2. Our results showed that ultra‐central tumors have a poor OS, PFS, and LC compared with central patients because of the use of risk‐adapted SBRT schedules that allow for equal and favorable toxicity profiles.
In vitro comparison of resonance frequency analysis devices to evaluate implant stability of narrow diameter implants at varying drilling speeds in dense artificial bone blocks
Authors: Romanos Georgios E. , Bastardi Daniel J. , Kakar Apoorv , Moore Rachel , Delgado‐Ruiz Rafael A. , Javed Fawad
Published: August 2019

Background

There are no studies that have assessed the implant stability quotient (ISQ) values of narrow diameter implants placed in artificial dense bone blocks at varying drilling speeds (DSs).

Purpose

The aim of the present in vitro experiment was to compare the performance of OSSTELL and Penguin devices to evaluate implant stability at DSs of 800 and 2000 rpm.

Materials and Methods

A total of 360 osteotomies were created in dense artificial bone blocks at DSs of 800 and 2000 rpm. Dental implants from three manufacturers (group‐1: NobelActive implants, Nobel Biocare, Yorba Linda, California; group‐2: Zimmer, Eztetic‐Zimmer implants, Zimmer Biomet Dental, Palm Beach Gardens, Florida; and group‐3: Astra Tech implant system, Dentsply Sirona, York, Pennsylvania) were randomly placed in these osteotomies using an insertion torque of 15 Ncm (60 implants/group). Implant stability in all bone blocks immediately following implant placement was evaluated using the OSSTELL and Penguin devices. ISQ values were presented as means ± SD. Statistical significance was set at P < .05.

Results

There was no significant difference in the ISQ values obtained from the OSSTELL and Penguin devices for implants in groups 1, 2, and 3. There was no significant difference when ISQ values obtained from the OSSTELL device were compared with the Penguin device for narrow diameter dental implants placed in dense bone blocks with osteotomies performed at 800 and 2000 rpm. ISQ values showed statistically significant higher values for OSSTELL compared to Penguin device.

Conclusion

The OSSTELL and Penguin devices are reliable for the assessment of implant stability in dense artificial bone. Implant design and site‐DS does not seem to have a significant impact of implant stability in artificial dense bone blocks.
Prospective randomized comparison of tongue base resection techniques: Robotic vs coblation
Authors: Babademez Mehmet Ali , Gul Fatih , Sancak Mecit , Kale Hayati
Published: August 2019

Objective

The objective of this study was to determine the effectiveness and morbidities of two different tongue base surgical approaches in patients with obstructive sleep apnoea (OSA).

Design and Setting

We carried out a prospective analysis in order to understand in detail the relative impact on apnoeas of the two different tongue base procedures. Seventy cases in 85 patients with OSA were divided into two operating groups and randomized. Altogether, 37 transoral robotic surgeries (TORS) and 33 coblations were performed. The patency of retrolingual passage was investigated by Muller's manoeuvere, polysomnography. Apnoea‐hypopnea index (AHI) was the primary outcome measure with the Epworth Sleepiness Score (ESS). The final follow‐up visit was at 6 months.

Results

The AHI index improved from 29.7 ± 9 to 10.7 ± 3.9 (P < .005) following TORS and from 27.2 ± 6.4 to 10.3 ± 4 in the coblation group. Selecting a threshold of a 50% reduction in AHI and AHI less than 20 events/h, the overall success rate was 75.6% in TORS compared with 78.7% in coblation (P = .785). Similar results were seen in AHI reduction rates (36%, 37.8%, respectively). ESS showed a significant improvement 6 months following surgery in both groups.

Conclusion

Transoral robotic surgery technique showed higher complication rates than coblation. TORS and coblation of the tongue base represent a promising treatment option with a similar AHI improvement. However, coblation promises lower complication rates unlike TORS.
Supportive breeders of Atlantic salmon Salmo salar have reduced fitness in nature
Authors: Jonsson Bror , Jonsson Nina , Jonsson Marius
Published: August 2019

Wild Atlantic salmon (Salmo salar) are in decline over the entire distribution area, and populations are enhanced by supportive breeding. Parental fish are sampled in rivers, crossed and the offspring reared in hatcheries until smolting when released, ready for ocean migration. Naturally reproducing salmon entering the River Imsa from the ocean were monitored from 1976 through 2013, and since 1982, supportive breeders spawning in the river were also monitored. The supportive breeders were first‐generation salmon, reared for 1—2 years in a hatchery before being released at the mouth of the river so they could migrate to sea (i.e., sea‐ranching). Wild and sea‐ranched salmon live in the ocean for 1—2 years before they return to the river for spawning. In years when only wild adults were present, mean number of smolts produced per 100 m2 river area and female breeder was 0.47. When there were 5% wild females, the mean production was only 0.088 (19%). The gradual decrease in offspring production with decreasing proportion of wild females (r2 = .41) indicates that the reduced offspring production was caused by inferior spawning behavior of hatchery females or reduced survival of their offspring in nature. Previous experimental evidence suggests that wild males fertilize the eggs of wild but also hatchery females. It is discussed how epigenetic effects caused by hatchery environments influence the developing juveniles, lead to phenotypic changes that may reduce their fitness in nature even after free ranging for a year or more in the ocean before they return and spawn.
Familiarity breeds growth: The impact of factional ties on local cadres’ economic performance in China
Authors: Wong Stan Hok‐Wui , Zeng Yu
Published: August 2019

Some attribute China's rapid economic growth to a cadre promotion system that rewards economic performance. Others argue that political promotion in China hinges on factionalism. Extant empirical studies often assume that performance can be measured independently from the effect of factionalism. We test the validity of this assumption by examining whether local cadres’ economic performance would change as a result of losing vertical ties to a higher authority. We find an immediate increase in the growth rates of local GDP and government revenue. However, the performance change is mediated by the type of succeeding leaders, as it occurs only under locally promoted leaders who have existing ties with the local cadres. We further examine various channels through which a leader's insider status may affect local economic performance and find that newly appointed outsider leaders would cut fiscal transfers to the local level, which may explain the drop in their short‐term performance.
Oviposition preferences in Grapholita molesta: the relative importance of visual and olfactory cues
Authors: Yang Xiaofan , Fan Fan , An Lina , Li Mengyao , Wei Guoshu
Published: August 2019

The oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), is a major pest of fruit trees worldwide. Females oviposit on the young leaves of peach [Prunus persica (L.) Batsch (Rosaceae)] shoots at twilight, when light intensity changes markedly. Previous researches have shown that the oviposition response of this moth is guided particularly by visual and olfactory cues from host plants. However, the relative importance of visual and olfactory cues in their oviposition preference is largely unknown. As a crepuscular moth, how do choices change as light intensity drops rapidly from day to night? In the present study, through two‐choice behavioural experiments, the oviposition responses of G. molesta to visual and olfactory cues (alone or in combination) from peach shoots were tested at four light intensities ranging from daylight to starlight. Grapholita molesta showed similar oviposition responses to plant cues under 1 000, 100, 1 and 0.01 mW m−2 illumination. Olfactory cues from peach shoots attracted significantly more oviposition than the negative control, whereas visual cues alone did not. Furthermore, olfactory cues were more attractive than visual cues, and no significant interaction was observed between the responses to the two cues. Our findings indicate that G. molesta females mainly rely on olfactory cues to recognize oviposition sites, regardless of differences in light intensity. These results do not provide evidence for attraction to visual cues, but the possibility that the brightness of leaves might be used to guide oviposition is discussed.
Wittgensteinian content‐externalism
Authors: Sorgiovanni Ben
Published: August 2019

Content‐externalism is the view that a subject's relations to a context can play a role in individuating the content of her mental states. According to social content‐externalists, relations to a socio‐linguistic context can play a fundamental individuating role. Åsa Wikforss has suggested that “social externalismdependson the assumption that individuals have an incomplete grasp of their own concepts”. In this paper, I show that this isn't so. I develop and defend an argument for social content‐externalism which does not depend on this assumption. The argument is animated by strands of thought in the later work of Wittgenstein. In addition to demonstrating that social externalists are not necessarily committed to thinking that a subject can have thoughts involving concepts which she incompletely understands, this argument is important insofar as it (a) supports a form of content‐externalism with extended scope, (b) avoids the controversy surrounding the claim that subjects can think with concepts which they incompletely understand, and (c) situates Wittgenstein's later work with respect to contemporary debates about content‐externalism.
Are they ideological renegades? Fathers' experiences on taking parental leave and gender dynamics in Korea: A qualitative study
Authors: Byun Seo‐Young , Won Sook‐Yeon
Published: August 2019

Despite their fear of repercussions on career advancement and gender identity, Korean fathers taking parental leave have continually increased. Why do Korean fathers take parental leave in spite of the risk of being stigmatized as less masculine and less ideal workers? Are they willing to be ‘ideological renegades' to be new involved fathers? In‐depth interviews with fathers who took parental leave provide interesting answers. Overall, taking parental leave does not make fathers become ideological renegades since it is mainly utilized in a manner that accommodates the work devotion schema, deviating from the formal policy objectives. This deviant utilization is encouraged and even valued by organizations. This may be part of a psychological contract between organizations and employees, ensuring that employees are dedicated to their career even during parental leave. Furthermore, beyond the legal eligibility of uptake, informal but powerful ‘organizational eligibility' such as high performance or their contribution to the organization, makes not only the likelihood but also the aftermath of taking up different across fathers. As a result, a hierarchy among fathers with class connotations emerges. This hierarchy among fathers, combined with the traditional gender hierarchy, may reinforce the masculine fabric of ideal workers as the norm.
Poling tuning: A plausible solution for minimizing microphony and secondary pyroelectric coefficient in ferroelectrics
Authors: Kiran Raj , Kumar Anuruddh , Kumar Rajeev , Vaish Rahul
Published: August 2019

This study proposes the idea of reducing the microphony effect and secondary pyroelectric coefficient in pyroelectric detectors by tuning the poling orientation. Mathematically, it has been shown that piezoelectric strain coefficients get altered by changing the poling direction. Eventually, for a couple of materials it has been demonstrated that microphony and secondary pyroelectric coefficient can be diminished by poling them at a given orientation. The poling angle nullifying secondary pyroelectric coefficient was found to be 58.2°, 47.1°, and 78.9° for (PZN‐0.08PT), (PMN‐PT), and (BCT‐0.48BZT) respectively while no such value existed for (PZT‐5A).
Poor maternal anthropometric status before conception is associated with a deleterious infant growth during the first year of life: a longitudinal preconceptional cohort
Authors: Agbota Gino , Fievet Nadine , Heude Barbara , Accrombessi Manfred , Ahouayito Urbain , Yovo Emmanuel , Dossa Djamirou , Dramane Latifou , Gartner Agnès , Ezinmègnon Sem , Yugueros Marcos Javier , Vachot Laurence , Tissières Pierre , Massougbodji Achille , Martin‐Prével Yves , Cot Michel , Briand Valérie
Published: August 2019

Background

According to the Developmental Origins of Health and Diseases concept, exposures in the preconception period may be critical. For the first time, we evaluated the effect of preconception poor anthropometric status on infant's growth in sub‐Saharan Africa.

Methods

A mother‐child cohort was followed prospectively from preconception to 1 year old in Benin. Maternal anthropometric status was assessed by prepregnancy body mass index (BMI), approximated by BMI at the first antenatal visit before 7 weeks' gestation, and gestational weight gain (GWG). BMI was categorized as underweight, normal, overweight, and obesity according to World Health Organization standards. GWG was categorized as low (<7 kg), mild (7‐12 kg), and high (>12 kg). In infant, stunting and wasting were defined as length‐for‐age and weight‐for‐length z scores less than −2 SD, respectively. We evaluated the association between BMI/GWG and infant's weight and length at birth and during the first year of life, as well as with stunting and wasting at 12 months using mixed linear and logistic regression models.

Results

In multivariate, preconceptional underweight was associated with a lower infant's weight at birth and during the first year (−164 g; 95% CI, −307 to −22; and −342 g; 95% CI, −624 to −61, respectively) and with a higher risk of stunting at 12 months (adjusted odds ratio [aOR] = 3.98; 95% CI, 1.01‐15.85). Furthermore, preconceptional obesity and a high GWG were associated with a higher weight and length at birth and during the first year.

Conclusion

Underweight and obesity before conception as well as GWG were associated with infant's growth. These results argue for preventive interventions starting as early as the preconception period to support child long‐term health.
Solvent‐deficient method lowers grain‐boundary resistivity of doped ceria
Authors: Maruyama Hiraku , Zeljković Saša , Nino Juan C.
Published: August 2019

Nanoparticles of gadolinium‐doped cerium oxide (GDC) were synthesized using solvent‐deficient method and their sinterability and electrical properties were investigated using the powder and cold sintering process. The GDC powder was uniaxially pressed into cylindrically‐shaped pellets with a mixture of nitric acid and hydrogen peroxide at 200°C to encourage particle arrangement during forming process. These bulk samples were annealed using two different temperature profiles: at 800°C for 5 hours and at 1300°C for 1 minute—800°C for 5 hours. The samples produced using HNO3/H2O2 mixture showed higher relative density than ones without it. Ionic conductivity of the sample sintered through the two‐step profile was obtained from electrochemical impedance spectroscopy. Although the grain conductivity for the samples (8.0 × 10−3 S cm−1 at 500°C, and 3.3 × 10−2 S cm−1 at 700°C) is on par with a conventionally sintered sample, the measured total conductivity (3.9 × 10−3 S cm−1 at 500°C, and 2.5 × 10−2 S cm−1 at 700°C) is about 10 times higher than the conventionally sintered one and is comparable to the values seen in the previous studies for GDC which employed higher sintering temperature, pointing to the effectively lower grain‐boundary impedance. This result could be attributed to no significant phase segregation along grain boundaries due to the low‐temperature processing.
Global biogeographical regions of freshwater fish species
Authors: Leroy Boris , Dias Murilo S. , Giraud Emilien , Hugueny Bernard , Jézéquel Céline , Leprieur Fabien , Oberdorff Thierry , Tedesco Pablo A.
Published: August 2019

Aim

To define the major biogeographical regions and transition zones for freshwater fish species.

Taxon

Strictly freshwater species of actinopterygian fish (i.e. excluding marine and amphidromous fish families).

Methods

We based our bioregionalization on a global database of freshwater fish species occurrences in drainage basins, which, after filtering, includes 11,295 species in 2,581 basins. On the basis of this dataset, we generated a bipartite (basin‐species) network upon which we applied a hierarchical clustering algorithm (the Map Equation) to detect regions. We tested the robustness of regions with a sensitivity analysis. We identified transition zones between major regions with the participation coefficient, indicating the degree to which a basin has species from multiple regions.

Results

Our bioregionalization scheme showed two major supercontinental regions (Old World and New World, 50% species of the world and 99.96% endemics each). Nested within these two supercontinental regions lie six major regions (Nearctic, Neotropical, Palearctic, Ethiopian, Sino‐Oriental and Australian) with extremely high degrees of endemism (above 96% except for the Palearctic). Transition zones between regions were of limited extent compared to other groups of organisms. We identified numerous subregions with high diversity and endemism in tropical areas (e.g. Neotropical), and a few large subregions with low diversity and endemism at high latitudes (e.g. Palearctic).

Main conclusions

Our results suggest that regions of freshwater fish species were shaped by events of vicariance and geodispersal which were similar to other groups, but with freshwater‐specific processes of isolation that led to extremely high degrees of endemism (far exceeding endemism rates of other continental vertebrates), specific boundary locations and limited extents of transition zones. The identified bioregions and transition zones of freshwater fish species reflect the strong isolation of freshwater fish faunas for the past 10–20 million years. The extremely high endemism and diversity of freshwater fish fauna raises many questions about the biogeographical consequences of current introductions and extinctions.
Assessing Rensch’s rule in a newt: Roles of primary productivity and conspecific density in interpopulation variation of sexual size dimorphism
Authors: Peñalver‐Alcázar Miguel , Galán Pedro , Aragón Pedro
Published: August 2019

Aim

Major efforts have been devoted to understanding the geographic pattern of sexual size dimorphism (SSD). Rensch's rule posits that SSD increases with body size in male‐biased SSD species and decreases with body size in female‐biased SSD species. This pattern, and its inverse, have been mainly explored at the interspecific level, whereas research at the intraspecific level has been largely neglected. Here, we test whether the allometric pattern of SSD in an urodele amphibian conforms to Rensch's rule and evaluate the relative role of four potential mechanisms: sexual selection, fecundity selection, density‐dependent resource availability and differential plasticity.

Location

Iberian Peninsula.

Taxon

Lissotriton boscai (Amphibia: Caudata: Salamandridae).

Methods

We used original (field‐based) and published data on body size, courtship behaviour and fecundity parameters and a suite of climatic, ecological and genetic (mitochondrial and nuclear markers) predictors to assess these hypotheses.

Results

The results showed that SSD increased with increasing female mean body size, supporting the inverse Rensch's rule pattern. Primary productivity‐related variables and female density were among the most relevant ecological predictors of SSD after accounting for genetic structure and capture date.

Main conclusions

This study reveals that the interplay between the density‐dependent resource availability hypothesis and the differential plasticity hypothesis explains the inverse Rensch's rule. We discuss how combining biogeographical and experimental approaches can provide alternative interpretations to the classical sexual and fecundity selection hypotheses on the interpopulation variation in SSD.
A comparison of macroecological and stacked species distribution models to predict future global terrestrial vertebrate richness
Authors: Biber Matthias F. , Voskamp Alke , Niamir Aidin , Hickler Thomas , Hof Christian
Published: August 2019

Aim

Predicting future changes in species richness in response to climate change is one of the key challenges in biogeography and conservation ecology. Stacked species distribution models (S‐SDMs) are a commonly used tool to predict current and future species richness. Macroecological models (MEMs), regression models with species richness as response variable, are a less computationally intensive alternative to S‐SDMs. Here, we aim to compare the results of two model types (S‐SDMS and MEMs), for the first time for more than 14,000 species across multiple taxa globally, and to trace the uncertainty in future predictions back to the input data and modelling approach used.

Location

Global land, excluding Antarctica.

Taxon

Amphibians, birds and mammals.

Methods

We fitted S‐SDMs and MEMs using a consistent set of bioclimatic variables and model algorithms and conducted species richness predictions under current and future conditions. For the latter, we used four general circulation models (GCMs) under two representative concentration pathways (RCP2.6 and RCP6.0). Predicted species richness was compared between S‐SDMs and MEMs and for current conditions also to extent‐of‐occurrence (EOO) species richness patterns. For future predictions, we quantified the variance in predicted species richness patterns explained by the choice of model type, model algorithm and GCM using hierarchical cluster analysis and variance partitioning.

Results

Under current conditions, species richness predictions from MEMs and S‐SDMs were strongly correlated with EOO‐based species richness. However, both model types over‐predicted areas with low and under‐predicted areas with high species richness. Outputs from MEMs and S‐SDMs were also highly correlated among each other under current and future conditions. The variance between future predictions was mostly explained by model type.

Main conclusions

Both model types were able to reproduce EOO‐based patterns in global terrestrial vertebrate richness, but produce less collinear predictions of future species richness. Model type by far contributes to most of the variation in the different future species richness predictions, indicating that the two model types should not be used interchangeably. Nevertheless, both model types have their justification, as MEMs can also include species with a restricted range, whereas S‐SDMs are useful for looking at potential species‐specific responses.