bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of the grinding process on the tribological behavior of gear analogy test parts
Authors: Brecher Christian , Löpenhaus Christoph , Greschert René 
Published: December 2018

Purpose
Boundary layers, which develop during manufacturing and operation, can protect tooth flanks from metal-to-metal contacts. The characteristics of boundary layers and the running behavior of gears are determined by the preconditioning processes (manufacturing and run-in). This paper aims to analyze the influence of the grinding process parameters and the grinding oil on the characteristics of boundary layers.

Design/methodology/approach
Sets of test parts and test gear sets with different grinding process variants and different metalworking fluids were manufactured to investigate the mechanisms of action of thermomechanical and chemical surface preconditioning during grinding. The test parts were analyzed with regard to their boundary layer by metallography and chemistry and regarding their running behavior on test rigs lubricated with transmission oil.

Findings
In the tests, reproducible differences in gear strength regarding low-cycle fatigue and micropitting were determined for the test parts ground with different thermomechanical energy inputs and with different metalworking fluids. As the test results could not be sufficiently explained on the basis of conventionally tolerated component properties such as roughness, hardness and residual stresses, a model was discussed which combines the mechanisms of action of the formation of the manufacturing-induced boundary layer with the running behavior of the parts.

Originality/value
By combining both measurement and test results, possible correlations between manufacturing and operation are investigated to establish a more sustainable and economical design of gears.
Influence of different flow regimes on the performance characteristics of a four-pad hydrostatic squeeze film damper loaded between pads
Authors: Nemchi Amina , Bouzidane Ahmed , Benariba Aboubakeur , Aboshighiba Hicham 
Published: December 2018

Purpose
The purpose of this paper is to study the influence of different flow regimes on the dynamic characteristics of four-pad hydrostatic squeeze film dampers (SFDs) loaded between pads.

Design/methodology/approach
A numerical model based on Constantinescu’s turbulent lubrication theory using the finite difference method has been developed and presented to study the effect of eccentricity ratio on the performance characteristics of four-pad hydrostatic SFDs under different flow regimes.

Findings
It was found that the influence of turbulent flow on the dimensionless damping of four-pad hydrostatic SFDs appears to be essentially controlled by the eccentricity ratio. It was also found that the laminar flow presents higher values of load capacity compared to bearings operating under turbulent flow conditions.

Originality/value
In fact, the results obtained show that the journal bearing performances are significantly influenced by the turbulent flow regime. The study is expected to be useful to bearing designers.
Effect of boronizing on the structural, mechanical and tribological properties of CoCrW dental alloy produced by selective laser melting
Authors: Uzun Yakup , Kovacı Halim , Yetim Ali Fatih , Çelik Ayhan 
Published: December 2018

PurposeThis paper aims to investigate the effects of boriding on the structural, mechanical and tribological properties of CoCrW dental alloy manufactured by the method of selective laser melting.Design/methodology/approachIn this study, CoCrW alloy samples that are used in dentistry were manufactured by the method of laser melting, and boriding treatment was made on the samples at 900°C and 1,000°C for 1, 4 and 8 h. The structural, mechanical and tribological effects of boriding on the samples were analyzed using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, microhardness and an abrasion test device.FindingsAccording to the results, the best outcomes in terms of abrasion strength and hardness were obtained in the sample that was subjected to boriding at 1,000°C for 4 h.Originality/valueThis study produced CoCrW alloys, which are fundamental biomaterials that are used in dentistry, by a different production method called selective laser melting and improved their surface characteristics by boriding.
Family protocol: how it shapes succession in family firms
Authors: Matias Cláudia , Franco Mário 
Published: December 2018

Purpose
This study aims to understand the role that family protocol can have in the succession planning process of family businesses.

Design/methodology/approach
For this purpose, the authors decided on a qualitative approach and performed an exploratory case study in Portugal: one firm with a family protocol. As data collection techniques, interviewing, direct observation and documentary analysis were used.

Findings
Based on the empirical evidence, it is concluded that a family protocol can help succession planning and favour the continuity and survival of the family business.

Practical implications
This study shows the relevance of a family protocol for the succession process that seems to be at the basis of family firms’ continuity, survival and minimising their failure.

Originality/value
Although family firms are many in number and central in the dynamics of the world economy, the family protocol has not been approached as a determinant of a successful succession process. This holds particularly for the realm of family firms.
Analysis of drivers’ characteristic driving operations based on combined features
Authors: Wang Min , Li Shuguang , Zhu Lei , Yao Jin 
Published: December 2018

Purpose
Analysis of characteristic driving operations can help develop supports for drivers with different driving skills. However, the existing knowledge on analysis of driving skills only focuses on single driving operation and cannot reflect the differences on proficiency of coordination of driving operations. Thus, the purpose of this paper is to analyze driving skills from driving coordinating operations. There are two main contributions: the first involves a method for feature extraction based on AdaBoost, which selects features critical for coordinating operations of experienced drivers and inexperienced drivers, and the second involves a generating method for candidate features, called the combined features method, through which two or more different driving operations at the same location are combined into a candidate combined feature. A series of experiments based on driving simulator and specific course with several different curves were carried out, and the result indicated the feasibility of analyzing driving behavior through AdaBoost and the combined features method.

Design/methodology/approach
AdaBoost was used to extract features and the combined features method was used to combine two or more different driving operations at the same location.

Findings
A series of experiments based on driving simulator and specific course with several different curves were carried out, and the result indicated the feasibility of analyzing driving behavior through AdaBoost and the combined features method.

Originality/value
There are two main contributions: the first involves a method for feature extraction based on AdaBoost, which selects features critical for coordinating operations of experienced drivers and inexperienced drivers, and the second involves a generating method for candidate features, called the combined features method, through which two or more different driving operations at the same location are combined into a candidate combined feature.
Theory of action for resourcing professional growth
Authors: O’Hara Susan , Bookmyer Joanne , Martin Robin , Newton Renee 
Published: December 2018

PurposeOrganizational characteristics and systemic structures that prioritize and resource teacher professional growth and collaboration are central to the role of districts in developing the ongoing professional growth of teachers. Yet, a key challenge facing districts is a lack of existing systemic structures to support professional growth to foster large-scale instructional improvement. The purpose of this paper is to explore how an organizational resourcing model might be used to build districts’ collective capacity to implement the cornerstones of a professional growth system.Design/methodology/approachAn explanatory case study, in the context of a partnership between a university-based intermediary and three California school districts, is used to illustrate how districts applied a theory of resourcing as a sustainable capacity-building approach.FindingsThe findings of this paper demonstrate that, to varying degrees, participating districts were able to enact elements of professional growth systems through a recursive interaction of schema shifts, resource use, and intentional actions, supporting a practice-based theory of organizational resourcing. While university intermediaries can both mediate and enable the success of locally designed professional growth systems through a supported resourcing model, the key to sustaining change efforts are cross-role organizational schema shifts and actions taken to operationalize underutilized existing, latent resources.Research limitations/implicationsCase studies do have limitations including not being able to make generalizations from the findings and conclusions.Originality/valueThe corpus of research on educational reform and organizational learning in educational research situates the school as the organizational unit of change. This study contributes to the research by elevating districts as the lever of organizational change for resourcing teacher professional growth systems.
Critical success factors of environmental management accounting practices: findings from Malaysian manufacturing industry
Authors: Mohd Fuzi Nursyazwani , Habidin Nurul Fadly , Janudin Sharul Effendy , Ong Sharon Yong Yee 
Published: December 2018

Purpose
The purpose of this paper is to identify the critical success factors of environmental management accounting practices in Malaysian manufacturing industry.

Design/methodology/approach
A pilot study was carried out on a sample of 60 manufacturing companies from Malaysian manufacturing industry. A survey instrument including 25 measurement items was designed to identify the level of environmental management accounting practices implementation in the Malaysian manufacturing industry. Descriptive statistical analysis and reliability analysis were used to analyze the data with SPSS software.

Findings
Findings indicate that environmental safety is one of the critical success factors that play the key role in ensuring the safety awareness at workplace. Companies in the manufacturing industries need to obtain critical success factors of environmental management accounting practices implementation to enhance performance, particularly for Malaysian manufacturing industry.

Research limitations/implications
The limitation of this study has been the difficult to find the literature on environmental management accounting practices in the Malaysian manufacturing industry. Another limitation is this study only conducted to 60 manufacturing companies from Malaysian manufacturing industry.

Practical implications
For practical implications, the development of instruments in this study may be valuable tools to evaluate Environmental Management Accounting Practices (EMAP) in Malaysian manufacturing industry. This study also provides important guidelines for Malaysian manufacturing industry to implement EMAP. This research finding would provide new insights for the critical success factors of EMAP to improve performance in Malaysian manufacturing industry.

Originality/value
This study makes a new contribution to environmental management accounting practices in Malaysian manufacturing industry. This study also provides important information for decision makers involved in environmental management accounting practices implementation and also provides useful reference for future researchers in this research area.
Application of common reflection angle migration for imaging deformation structures in an inner accretionary wedge, Nankai Trough, Japan
Authors: Shiraishi Kazuya , Robb Masako , Hosgood Karl , Yamada Yasuhiro 
Published: December 2018

ABSTRACTTo better image deformation structures within the inner accretionary wedge of the Nankai Trough, Japan, we apply common reflection angle migration to a legacy two‐dimensional seismic data set acquired with a 6 km streamer cable. In this region, many seismic surveys have been conducted to study the seismogenic zone related to plate subduction. However, the details of the accreted sediments beneath the Kumano forearc basin are still unclear due to the poor quality of seismic images caused by multiple reflections, highly attenuated signals, and possibly complex geological structures. Generating common image gathers in the subsurface local angle domain rather than the surface offset domain is more advantageous for imaging geological structures that involve complex wave paths and poor illumination. By applying this method, previously unseen structures are revealed in the thick accreted sediments. The newly imaged geometric features of reflectors, such as the folds in the shallow part of the section and the deep reflectors with stepwise discontinuities, imply deformation structures with multiple thrust faults. The reflections within the deep accreted sediments (approximately 5 km) are mainly mapped to far angles (30°–50°) in the common reflection angles, which correspond to the recorded offset distances greater than 4.5 km. This result indicates that the far offset/angle information is critical to image the deformation structures at depth. The new depth image from the common reflection angle migration provides seismic evidence of multiple thrust faults and their relationship with the megathrust fault that is essential for understanding the structure and evolution of the Nankai Trough seismogenic zone.
Developmental skills between kindergarten children with handwriting difficulties in Chinese and/or English
Authors: Tse Linda F. L. , Siu Andrew M. H. , Li‐Tsang Cecilia W. P. 
Published: December 2018

AimThis study aimed to examine the differences in developmental skills between children with and without handwriting difficulties in their last year of kindergarten education.MethodsStandardised tests on handwriting performance and developmental skills were administered to 20 typically developing children, 21 children with handwriting difficulties in Chinese and 23 children with handwriting difficulties in both Chinese and English. We used one‐way MANOVA, univariate ANOVA and post hoc comparisons, to compare the developmental skills between children with and without handwriting difficulties. Multiple regression analysis was used to identify the significant predictors of developmental skills for Chinese and English handwriting performance.ResultsHigher proportion of children faced handwriting difficulties in Chinese than in English. Their major problem in Chinese handwriting was on stroke formation, while the results did not indicate the key factor leading to English handwriting difficulties. The results also showed that children with handwriting difficulties had significantly poorer visual motor integration, some aspects of visual perception and fine motor skills than typically developing children. Reading skills were not a key factor contributing to handwriting performance. In addition, visual and fine motor integration and spatial relationship were the significant predictors of Chinese and English handwriting performance, which accounted for 39.7 and 43.6% of the variance respectively.ConclusionFirst, the results suggested that more resources should be devoted to coaching children to learn Chinese than English handwriting. Second, besides direct repetitive practice on handwriting, there is a need to incorporate learning activities to facilitate the development of visual motor skills, visual perception, and fine motor skills as a preparation for learning to write or in improving handwriting performance among kindergarten children.
Telehealth and autism: Are telehealth language assessments reliable and feasible for children with autism?
Authors: Sutherland Rebecca , Trembath David , Hodge Marie Antoinette , Rose Veronica , Roberts Jacqueline 
Published: December 2018

AbstractBackgroundAccess to timely and appropriate speech–language pathology (SLP) services is a significant challenge for many families. Telehealth has been used successfully to treat a range of communication disorders in children and adults. Research examining the use of telehealth for children with autism has focused largely on diagnosis, parent‐implemented interventions, and behavioural interventions involving interactions between clinicians and parents. There is, however, very limited research into the use of telehealth directly to assess or intervene with children with autism. This paper reports the outcomes of a study of telehealth language assessments with primary school‐aged children with autism.AimsTo evaluate the reliability and feasibility of telehealth language assessments for school‐aged children with autism.Methods & ProceduresThe language skills of 13 children with autism aged 9–12 who attended mainstream schools or support classes were assessed using the Clinical Evaluation of Language Fundamentals—4th Edition. An SLP delivered and scored four subtests of the assessment via telehealth from a remote location. A second SLP at the same location as the child co‐scored the online subtests to provide a measure of reliability and delivered the remaining subtests. The local SLP completed checklists in both conditions to provide observations regarding behaviour. Parent feedback was elicited via survey.Outcomes & ResultsThere was strong interrater reliability between the telehealth and face‐to‐face conditions (correlation coefficients ranged from r = 0.919 to 0.990 across the subtests and Core Language Score) and good agreement between clinicians on all measures. Analysis using the Wilcoxon Signed Rank test indicated no significant differences in children's behaviour between the telehealth and face‐to‐face conditions, although variation between individuals was observed. Parents provided generally positive feedback about the use of telehealth for the assessments.Conclusions & ImplicationsThe findings of this study provide preliminary support the use of telehealth assessments of school‐aged children with autism. Comparison of telehealth and face‐to‐face assessment scores showed high agreement and correlation, and while the children showed individual differences in their behaviour during the telehealth sessions, there was no clear difference between the conditions at the group level. The findings suggest that telehealth may present a reliable and feasible approach to the assessment of language for children with autism in some circumstances as a primary or adjunct service model, while acknowledging that individual differences among these children may be important to consider when planning both assessment and intervention via telehealth.
The 7α‐hydroxysteroid dehydratase Hsh2 is essential for anaerobic degradation of the steroid skeleton of 7α‐hydroxyl bile salts in the novel denitrifying bacterium Azoarcus sp. strain Aa7
Authors: Yücel Onur , Borgert Sebastian Roman , Poehlein Anja , Niermann Karin , Philipp Bodo 
Published: December 2018

SummaryBile salts are steroid compounds from the digestive tract of vertebrates and enter the environment via defecation. Many aerobic bile‐salt degrading bacteria are known but no bacteria that completely degrade bile salts under anoxic conditions have been isolated so far. In this study, the facultatively anaerobic Betaproteobacterium Azoarcus sp. strain Aa7 was isolated that grew with bile salts as sole carbon source under anoxic conditions with nitrate as electron acceptor. Phenotypic and genomic characterization revealed that strain Aa7 used the 2,3‐seco pathway for the degradation of bile salts as found in other denitrifying steroid‐degrading bacteria such as Sterolibacterium denitrificans. Under oxic conditions strain Aa7 used the 9,10‐seco pathway as found in, for example, Pseudomonas stutzeri Chol1. Metabolite analysis during anaerobic growth indicated a reductive dehydroxylation of 7α‐hydroxyl bile salts. Deletion of the gene hsh2
Aa7 encoding a 7‐hydroxysteroid dehydratase led to strongly impaired growth with cholate and chenodeoxycholate but not with deoxycholate lacking a hydroxyl group at C7. The hsh2
Aa7 deletion mutant degraded cholate and chenodeoxycholate to the corresponding C19‐androstadienediones only while no phenotype change was observed during aerobic degradation of cholate. These results showed that removal of the 7α‐hydroxyl group was essential for cleavage of the steroid skeleton under anoxic conditions.
The Economic Effects of Brexit: Evidence from the Stock Market
Authors: Breinlich Holger , Leromain Elsa , Novy Dennis , Sampson Thomas , Usman Ahmed 
Published: December 2018

AbstractWe study stock market reactions to the Brexit referendum on 23 June 2016 in order to assess investors’ expectations about the effects of leaving the European Union on the UK economy. Our results suggest that initial stock price movements were driven by fears of a cyclical downturn and by the sterling depreciation following the referendum. We also find tentative evidence that market reactions to two subsequent speeches by Theresa May (her Conservative party conference and Lancaster House speeches) were more closely correlated with potential changes to tariffs and non‐tariff barriers on UK–EU trade, indicating that investors may have updated their expectations in light of the possibility of a ‘hard Brexit’. We do not find a correlation between the share of EU immigrants in different industries and stock market returns.
Off EU Go? Brexit, the UK Labour Market and Immigration
Authors: Wadsworth Jonathan 
Published: December 2018

AbstractImmigration remains a highly antagonistic issue and its purported effects in the labour market are still contestable. Against this background, the UK looks set to undertake a large overhaul of its immigration policy following the decision to leave the EU. To try to inform the debate, this study summarises the key patterns and changes in the UK labour market regarding immigration in the run‐up to and the immediate aftermath of the Brexit vote. The paper then offers some ideas that could explain why immigration appears to have had little effect, either positive or negative, on the wage and employment outcomes of UK‐born residents. It next outlines the current state of the labour market and the role of EU immigrants in it as the UK edges toward Brexit. The paper then considers where change may be seen most strongly following Brexit and discusses the many possible immigration policy options open to the government after the UK leaves the EU.
Contracting Institutions, Agro‐food Trade and Product Quality
Authors: Fałkowski Jan , Curzi Daniele , Olper Alessandro 
Published: December 2018

AbstractThe agro‐food sector has experienced a profound transformation of contractual arrangements along the value chain, coinciding with important technological innovations and product quality upgrading. Our understanding of the impact that this transformation has had on trade flows in the agricultural sector is very limited. In particular, we have limited knowledge about the extent to which the patterns in agro‐food trade have been driven by the quality of contractual institutions. Using existing measures which capture the sensitivity of agro‐food products to contractual imperfections, we show that countries with better contract enforcement specialise in the production of food which requires higher level of relationship‐specific investments. We also find that countries with better contracting institutions and producing contract‐intensive goods specialise in exporting high quality foods. In addition, we show that the quality of contracting institutions might importantly affect the process of product quality upgrading.