bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling and optimization for fly ash reinforced bronze-based composite materials using multi objective Taguchi technique and regression analysis
Authors: Kus Hüsamettin , Basar Gokhan , Kahraman Funda 
Published: August 2018

Purpose
This paper aims to investigate the effect of fly ash reinforcement ratio (Rr) and sintering temperature (T) on the transverse rupture strength (TRS), hardness and density of fly ash reinforced bronze-based composite materials by using multi-objective Taguchi technique, analysis of variance (ANOVA) and regression analysis.

Design/methodology/approach
The bronze-based composite materials containing 5, 10 and 15 Wt.% fly ashes were prepared by using spark plasma sintering carried out under a pressure of 35 MPa, at 750, 800 and 850 °C for 3 min. Sintering temperature and fly ash reinforcement ratio were considered as input parameters; the TRS, hardness and density were considered as output parameters. Experiments were designed according to Taguchi L9 orthogonal array. Multi signal-to-noise ratio (MSNR) was computed to define the optimal process parameters. ANOVA was conducted to detect the importance of the input parameters for the process performance. Moreover, the linear model was developed for predicting the performance parameters by using regression analysis.

Findings
Fly ash can be a good alternative as reinforcement to reduce the cost for composite materials. Optimal process parameters had obtained 850°C sintering temperature and 5 per cent reinforcement ratio by using multi-objective Taguchi technique. The per cent contributions of the control factors on the performance parameters had obtained sintering temperature (95.78 per cent) and fly ash reinforcement ratio (3.00 per cent) with ANOVA. The obtained results indicate that the sintering temperature was found to be the dominant factor among controllable factors. However, the reinforcement ratio showed an insignificant effect.

Originality/value
It has been indicated that multi-objective Taguchi technique and regression analysis are effective and powerful tools in modeling and simultaneous optimization of quality characteristics for composite materials.
A proposed framework for accelerated innovation in data-driven environments
Authors: Zhan Yuanzhu , Tan Kim Hua , Perrons Robert K. 
Published: August 2018

Purpose
In today’s rapidly changing business environment, the case for accelerated innovation processes has become increasingly compelling at both a theoretical and practical level. Thus, the purpose of this paper is to propose a conceptual framework for accelerated innovation in a data-driven market environment.

Design/methodology/approach
This research is based on a two-step approach. First, a set of propositions concerning the best approaches to accelerated innovation are put forward. Then it offers qualitative evidence from five case studies involving world-leading firms, and explains how innovation can be accelerated in different kinds of data-driven environments.

Findings
The key sets of factors for accelerated innovation are: collateral structure; customer involvement; and ecosystem of innovation. The proposed framework enables firms to find ways to innovate – specifically, to make product innovation faster and less costly.

Research limitations/implications
The findings from this research focus on high-tech industries in China. Using several specific innovation projects to represent accelerated innovation could raise the problem of the reliability and validity of the research findings. Additional research will probably be required to adapt the proposed framework to accommodate the cultural nuances of other countries and business environments.

Practical implications
The study is intended as a framework for managers to apply their resources to conduct product innovation in a fast and effective way. It developed six propositions about how, specifically, data analytics and ICTs can contribute to accelerated innovation.

Originality/value
The research shows that firms could harvest external knowledge and import ideas across organisational boundaries. An accelerated innovation framework is characterised by a multidimensional process involving intelligence efforts, relentless data collection and flexible working relationships with team members.
Duality of self-promotion on social networking sites
Authors: Islam A.K.M. Najmul , Mäntymäki Matti , Benbasat Izak 
Published: August 2018

PurposeSelf-promotion on social networking sites (SNSs) is a controversial issue as it has been attributed to various positive and negative consequences. To better understand the reasons for the mixed consequences and the nature of self-promotion on SNSs, the purpose of this paper is to theorize and empirically investigate the duality of SNS self-promotion and its underlying socio-psychological mechanisms.Design/methodology/approachBy drawing on the motivational affordance lens and self-determination theory, this study develops a theoretical account of the duality of self-promotion on SNSs. The author places subjective vitality and SNS addiction as the positive and negative consequences of self-promotion. The model was tested using partial least squares technique with data collected from 289 Finnish Facebook users using a survey.FindingsThe results show that self-promotion contributes to both subjective vitality and to SNS addiction. Importantly, exhibitionism attenuates the effect of self-promotion on subjective vitality and amplifies the effect of self-promotion on SNS addiction. The feature-level analysis shows that status updates, adding photos, commenting in others’ posts and profile completeness are the main determinants of self-promotion. Status updates, adding photos and check-ins, in turn, have high exhibitionistic appeal.Originality/valueTo date, the empirical attempts to investigate the duality of SNS use have been rare. In particular, prior research is largely silent in explaining what tilt the outcomes of self-promotion either toward positive or negative direction. The paper fills this theoretical and empirical gap and thus contributes to literature on dualities of SNS use.
How do entrepreneurship rates vary across different races?
Authors: Sabbaghi Omid 
Published: August 2018

Purpose
The purpose of this paper is to examine the time-series dynamics of entrepreneurship rates for different race classifications based on household characteristics over the 1996 through 2013 period.

Design/methodology/approach
Using microdata from the Kauffman Foundation, this study investigates the roles of unemployment, homeownership, income, immigration, education, age, gender and marital status in relation to entrepreneurship rates for different race classifications through ridge regression analysis.

Findings
Results suggest that the time-series variation in entrepreneurship rates for different race classifications are variable-dependent, moreover, the economic and statistical significance of the candidate explanatory variables are sensitive to the time period under analysis. Unemployment, homeownership, education, age and marital status are significant variables for whites while unemployment, income, immigration and gender variables are significant for blacks. For the case of Native Americans and Asians, the candidate explanatory variables do not explain the time-series variation in entrepreneurship rates for the sample periods in this study.

Social implications
This study exhibits implications for public policy in helping to promote entrepreneurship at the individual level and help stimulate entrepreneurial activity as a mechanism for promoting economic growth.

Originality/value
The findings suggest the importance of examining entrepreneurship rates across time based on race classifications. This study highlights the importance of conducting ridge regression analysis for different sub-periods in time when assessing entrepreneurship rates.
Reflecting the voice of the student
Authors: Borrelli Steve , Chao Zoe , Su Chao 
Published: August 2018

Purpose
The purpose of this paper, conducted at Penn State University, is to inform a redesign of the library facility integrating a Collaboration Commons projected to cost over $20m.

Design/methodology/approach
A mixed-methods design comprised of observation, focus groups, conversations with students, interviews with Knowledge Commons personnel and a UX Café was employed. Researchers investigated the students’ need for workspaces and soft-seating.

Findings
Findings suggested that students generally come to the libraries with a goal of being productive and they value the productivity generated by spacious and well-designed workspaces over the comfort of soft-seating. Students desire an increase in the availability of workspaces.

Originality/value
These findings informed facility enhancement recommendations, and have been integrated into the program statement made available to design firms bidding on the renovation project.
Supporting the next generation of Texas A&M University scholars
Authors: Moberly Heather K. , Lee Dong Joon , Kessler Michael David , Carrigan Esther Elizabeth 
Published: August 2018

PurposeThe speed of information transfer, discovery, and evaluation is accelerating the timeline for young researchers to establish their scholarly identity. A clear scholarly identity is an essential element in developing and maintaining a scholar’s reputation. The paper aims to discuss this issue.Design/methodology/approachTexas A&M University is developing workflows and programmatic support for graduate students as they navigate a labyrinth of tools, such as ORCID iD, to establish and manage their identity and reputation.FindingsThis paper discusses the evolution of a collaboration between the Texas A&M University Libraries (A&M UL) and the Office of Research and Graduate Studies in the College of Veterinary Medicine & Biomedical Sciences to educate graduate-level students about scholarly identity and reputation.Originality/valueThe collaboration between the Texas A&M UL and the Texas A&M College of Veterinary Medicine & Biomedical Sciences Office of Research and Graduate Studies evolved into an intentional practice to assist emerging researchers as they navigate the labyrinth of standards and research information systems to establish their scholarly identity.
The influence of exploration and exploitation on born globals’ speed of internationalization
Authors: Lin Song , Si Steven 
Published: August 2018

PurposeThe purpose of this paper is to investigate exploration and exploitation as antecedents to speed of internationalization in born global firms.Design/methodology/approachBy using 150 born global firms in China, the authors demonstrate that the influence of exploration and exploitation on born globals’ speed of internationalization. The statistical method in this study is hierarchical regression model.FindingsThe results revealed that exploration has a negative effect on the internationalization of born global firms, whereas exploration does not. The interaction between exploration and exploitation has positive influence on born globals’ speed of internationalization.Practical implicationsThe study helps entrepreneurs and managers to better understand how to achieve international entrepreneurship success and internationalization success.Originality/valueThis study makes a theoretical development of internationalization speed, a core aspect of international entrepreneurship theory. First, this study contributes to theories on born globals’ speed of internationalization, which the authors redefined in the current study by using two approaches to measure the speed of internationalization of born global firms. Second, the study used exploration and exploitation as the two designated factors that are supposed to affect the speed of internationalization of born globals which contributes to the theoretical literature of international opportunity.
Evaluation of a peer support specialist led group
Authors: Taylor Amber , Dorer Gemma , Gleeson Kate 
Published: August 2018

PurposeThe purpose of this paper is to evaluate a Peer Support Specialist (PSS) and NHS practitioner co-produced “Enabling Recovery” group that supports service-users’ recovery whilst providing pathways for appropriate transition from mental health teams.Design/methodology/approachThe sample included 23 service-users (f=10,m=13) with a range of mental health conditions. The evaluation set out to assess how the attendees experienced the group and the impact of the group on subsequent contact with services. The design involved a content analysis of focus groups and group evaluation forms; an assessment of direct and indirect contacts made in the three months prior, and following, the group; and a record of the number of discharges and referrals made following the group.FindingsGroup content and social contact were rated as most helpful and cognitive demands and paperwork as least helpful. Number of direct and indirect contacts significantly reduced, four attendees were discharged due to improved mental health and 17 began accessing third-sector/community organisations.Research limitations/implicationsFuture evaluations could seek feedback from service-users who disengaged from the group and indirect contacts could be broadened to include service initiated contacts.Practical implicationsFindings suggest that PSS and NHS Practitioner co-produced group interventions are effective in reducing service demand and increasing service-user satisfaction.Originality/valueThis paper adds a novel contribution to the PSS literature offering support to the utility of co-produced PSS interventions in an NHS setting.
Evaluation of surface roughness during turning of Al-SiC and Al-SiC-Gr composites
Authors: Suresh P. , Poongodi T. 
Published: August 2018

Purpose
In the current scenario, new materials are gaining popularity due to higher specific properties of strength and stiffness, increase in wear resistance, dimensional stability at higher temperature, etc. Subsequently, the need for precise machining has also been increased enormously. The purpose of this paper is to study the surface roughness during the turning of Al-10%SiC and Al-5%SiC-5%Gr composites under different cutting conditions.

Design/methodology/approach
Artificial neural network (ANN) has been effectively employed in solving problems with effortless computation in the areas such as fault diagnosis, process identification, property estimation, data smoothing and error filtering, product design and development, optimisation and estimation of activity coefficients. Response surface method is also used to analyse the problems involving a number of input parameters and their corresponding relationship between one or more measured dependent responses. Using Design Expert.8 evaluation software package, a simpler and more efficient statistical RSM model has been designed. RSM models are created by using 27 experimental data measurements obtained from different turning conditions of aluminium alloy composites.

Findings
In this work, the surface roughness during turning of Al-10%SiC and Al-5%SiC-5%Gr composites under different cutting conditions has been studied. The surface roughness value is proportional with the increase in feed rate and depth of cut while inversely proportional with the cutting speed. In all turning conditions, Al-10%SiC composite has lower surface roughness values than Al-5%SiC-5%Gr hybrid composite. An ANN and response surface models have been developed to predict the surface roughness of machined surface. The experimental results concur well with predicted models.

Originality/value
In the present trend, new materials are gaining popularity due to higher specific properties of strength and stiffness, increase in wear resistance, dimensional stability at higher temperature, etc. Subsequently, the need for precise machining has also been increased enormously. In this work, the surface roughness during turning of Al-10%SiC and Al-5%SiC-5%Gr composites under different cutting conditions has been studied.
Developing students’ understandings of citizenship and advocacy through action civics
Authors: Blevins Brooke , LeCompte Karon Nicol , Bauml Michelle 
Published: August 2018

Purpose
In the wake of the 2016 US presidential election and the political turmoil that has ensued since, the need to prepare youth as active, well-informed citizens is self-evident. Middle and high school students have the potential to shape public and political opinion and encourage others to engage in collective, grassroots civic efforts to enact positive change in their communities through social media and face-to-face communication (CIRCLE Staff, 2018). Action civics has emerged as a promising civic education practice for preparing young people for active and informed civic participation. By providing students with the opportunity to “engage in a cycle of research, action, and reflection about problems they care about personally while learning about deeper principles of effective civic and especially political action” (Levinson, 2012, p. 224). The paper aims to discuss these issues.

Design/methodology/approach
This interpretive qualitative case study utilized Westheimer and Kahne’s (2004) citizen typology to examine 30 fifth through ninth graders’ conceptions of citizenship, civic action and advocacy as a result of their participation in an action civics inquiry project that took place during summer civics camps.

Findings
Findings show that overall, students’ conceptions of citizenship remained relatively unchanged after participating in the summer civics camps; however, students did develop increased understanding of advocacy and were more readily able to identify the “root causes” of community issues.

Originality/value
Implications of this study add to a small but growing body of literature on the outcomes of action civics programs and may inform the design and implementation of these kinds of programs.
3D upper crustal density structure of the Deccan Syneclise, Central India
Authors: Prasad K.N.D. , Singh A.P. , Tiwari V.M. 
Published: August 2018

ABSTRACTA constrained 3D density model of the upper crust along a part of the Deccan Syneclise is carried out based on the complete Bouguer anomaly data. Spectral analysis of the complete Bouguer gravity anomaly map of the study region suggests two major sources: short wavelength anomalies (<100 km) caused primarily due to the density inhomogeneities at shallow crustal level and long wavelength anomalies (>100 km) produced due to the sources deeper than the upper crust. A residual map of the short wavelength anomalies is prepared from the complete Bouguer anomaly using Butterworth high‐pass filter (100 km cut‐off wavelength). Utilizing the constraints from deep resistivity sounding, magnetotellurics and deep seismic sounding studies, 2.5D density models have been generated along 39 profiles of this region. The mismatch between the calculated response of the a priori 2.5D model with the residual (short wavelength) gravity anomalies is minimized by introducing high‐density intrusive bodies (≥2.81 g/cm3) in the basement. With these 2.5D density models, the initial geometry of our 3D density model, which includes alluvium, Deccan trap, Mesozoic sediment and high‐density intrusive bodies in the basement up to a depth of 7 km (upper crust), is generated. In the final 3D model, Deccan trap extends from 200 m to nearly 1700 m below the 90–150 m thick Quaternary sediment. Further down, the sub‐trappean Mesozoic sediment is present at a depth range of 600–3000 m followed by the basement. The derived 3D density model also indicates six intrusive bodies of density 2.83 g/cm3 in the basement at an average depth of about 4–7 km that best fits the residual gravity anomaly of the study area.
The infrastructure of telecare: implications for nursing tasks and the nurse‐doctor relationship
Authors: Nickelsen Niels Christian Mossfeldt 
Published: August 2018

AbstractTelecare can offer a unique experience of trust in patient‐nurse relationships, embracing new standards for professional discretion among nurses, but also reflects an increasingly complicated relationship between nurses and doctors. The study uses ethnographic methodology in relation to a large 5 million euro project at four hospitals caring for 120 patients withCOPD. Twenty screen‐mediated conferences were observed and two workshops, centring on nurses’ photo elucidation of the practice of telecare, were conducted with a focus on shifting tasks, professional discretion, responsibility and boundaries between nurses and doctors. Analytically, the study draws on Star's notion of ‘infrastructure’ and Mol, Moser and Pols's ideas of care as ‘tinkering’. Infrastructure is understood as human and non‐human conduct that is embedded into wider organisational conventions, sites and structures. The analysis demonstrates and proposes that, in telecare, greater accountability, discretion and responsibility are imposed on the nurse, but that they also have less access to the means of clinical decision‐making, namely, doctors. The article explores how relational infrastructures ascribe the professions they constitute (nurses and doctors) functions of power and accountability and highlights the ethical problem of the nurse being given greater responsibility while simultaneously becoming more dependent on the doctor.
Lifestyle drift and the phenomenon of ‘citizen shift’ in contemporary UK health policy
Authors: Williams Oli , Fullagar Simone 
Published: August 2018

AbstractDespite political change over the past 25 years in Britain there has been an unprecedented national policy focus on the social determinants of health and population‐based approaches to prevent chronic disease. Yet, policy impacts have been modest, inequalities endure and behavioural approaches continue to shape strategies promoting healthy lifestyles. Critical public health scholarship has conceptualised this lack of progress as a problem of ‘lifestyle drift’ within policy whereby ‘upstream’ social contributors to health inequalities are reconfigured ‘downstream’ as a matter of individual behaviour change. While the lifestyle drift concept is now well established there has been little empirical investigation into the social processes through which it is realised as policies are (re)formulated and implementation is localised. Addressing this gap we present empirical findings from an ethnography conducted in a deprived English neighbourhood in order to explore: (i) the local context in the process of lifestyle drift and; (ii) the social relations that reproduce (in)equities in the design and delivery of lifestyle interventions. Analysis demonstrates how and why ‘precarious partnerships’ between local service providers were significant in the process of ‘citizen shift’ whereby government responsibility for addressing inequity was decollectivised.