bluuebunny/crossref_metadata_2025_split huggingface dataset:
Friction and wear modeling of rotary disc in spherical pump
Authors: Guan Dong , Jing Li , Gong Junjie , Yang Zhengwei , Shen Hui 
Published: November 2018

PurposeRotary disc is a key component in the compact spherical pump, connecting shaft and piston, bearing hydraulic force conformally and constituting dynamic working chambers alternatively. Motion of rotary disc comprises two components. One is rotating around its own axis and the other is sliding on a cone surface. Therefore, it is necessary to investigate the friction and wear mechanism between rotary disc and cylinder under a complicated operation condition.Design/methodology/approachStructural properties of rotary disc are analyzed first. Frictional moment of rotary disc is modeled based on its structural characteristics and working mechanism, and the constraints of the structural parameters are considered. Besides, the concept of dimensionless contact area is proposed. Comparison is performed between the proposed concept and the frictional moment to determine an optimized beginning angle for spherical pump with a given displacement. The wear model of rotary disc is also established based on its kinematic property, a velocity coefficient is proposed and its common values are presented.FindingsEffects of structural parameters, i.e. beginning angle and ending angle on the frictional moment, are obtained quantitatively. The frictional moment increases with beginning and ending angle with different rates. While the dimensionless contact area decreases with beginning angle. The larger the piston angle, the larger the velocity coefficient will be. The rotary disc wears severely with a larger beginning angle and smaller ending angle, while it has the smallest wear rate under a smaller beginning angle and a larger ending angle.Originality/valueThe originality lies in modeling the complex contact force of rotary disc based on its specific structure. These conclusions can be used to optimize the structural parameters of rotary disc.
Illuminating the principles of social exchange theory with Hawthorne studies
Authors: Zoller Yaron J. , Muldoon Jeff 
Published: November 2018

Purpose
The purpose of this paper is to suggest Homans’ social exchange theory (SET), a management theory, as an explanation for some of the findings of some of the Hawthorne experiments (1924-1933), which demonstrated how social situations play an important role in task performance and productivity and how social exchanges can facilitate it. The authors also use SET to investigate Elton Mayo’s inquiry as to what caused spontaneous cooperation in Hawthorne.

Design/methodology/approach
The authors used a combination of published work by Homans, Roethlisberger and Dickson, Mayo and others, as well as oral histories conducted by Greenwood and Bolton in 1982-1984, to argue that some of the Hawthorne studies illustrate the principles of SET. Homans’ SET brought together concepts from multiple disciplines and offered a framework to explain social behaviors.

Findings
The relay assembly room and the bank wiring tests of Hawthorne studies can illustrate SET as developed by Homans. With the development of SET, Homans not only provided explanations for the creation of strong feelings of affiliation and trust through interactions and mutual dependence between group members but also provided evidence to Mayo’s concept of spontaneous collaboration.

Research limitations/implications
The limitations of the paper are that the studies themselves can lend themselves to multiple perspectives due to design flaws. Therefore, our argument is only one interpretation – even if it is something that the researchers would have supported.

Originality/value
The paper augments the ongoing discussion about the Hawthorne studies in the literature and in the development of management theories such as SET. The authors provide support that it is through the attempts to explain the Hawthorne studies and the post-Second World War controversies over the studies that Homans developed social exchange. Building on previous work, the methods show perspectives beyond the motivations and sentiments of Homans by demonstrating observable behaviors from the Hawthorne studies.
Are multiple brand endorsements economically effective?
Authors: Agnihotri Arpita , Bhattacharya Saurabh , Prasad V.K. Satya 
Published: November 2018

Purpose
The purpose of this study is to examine the impact of multiple brand celebrity endorsement strategies on firms’ performance and different attributes associated with celebrities on firms’ performance. In this regard, the present study specifically explores the role of celebrity reputation and experience, as well as social media as a promotion platform in influencing the economic effectiveness of multiple brand endorsement strategies, i.e. proportion of brands endorsed in a firms’ brand portfolio.

Design/methodology/approach
Study is based on instrumental variable regression analysis approach and is conducted in one of the emerging markets, i.e. India.

Findings
The findings indicate that firms’ market valuations increase as its proportion of brands endorsed by celebrities increases. Furthermore, popularity reputation of celebrity also influences market valuation, and relationship is positively moderated by celebrity’s experience.

Originality/value
Extant studies have considered one endorsement news of a firm at a time. However, how total proportion of firms’ brand endorsed by celebrities impacts its performance has not been investigated. Furthermore, impact of celebrity traits has been examined only in consumer behavior studies and has been rarely investigated in context of firms’ economic performance.
Relative importance of country of service delivery, country of person and country of brand in hybrid service evaluation: a conjoint analysis approach
Authors: Aruan Daniel Tumpal Hamonangan , Crouch Roberta , Quester Pascale 
Published: November 2018

Purpose
This paper aims to examine the relative importance of country of brand (COB), country of service delivery (COSD) and country of person (COP) in consumer evaluation of hybrid services.

Design/methodology/approach
Using data (N = 1,071) from Australia, Indonesia and Singapore, a conjoint analysis experimental design explored empirically the importance of country of origin (COO) effects in three service contexts: search, experience and credence.

Findings
The analysis reveals that the relative importance of COP was the highest for credence services, while COB was the strongest for experience services.

Practical implications
For firms operating offshore, companies must understand that the COO construct is multi-dimensional for services, as it is for tangible products and not limited only to COB as traditionally thought. At least two other distinct dimensions – COSD and COP – can play significant roles as predictors of service quality expectations. Companies must consider the implications of service type, according to the search-experience-credence continuum to inform staffing decisions and managing customer expectations.

Originality/value
This research contributes to the literature by extending the understanding of country image effects in the context of hybrid service provisions, particularly in the view of customer expectations of services with multiple country-of-origins. Although there have been several studies examining the effects of COO on services evaluation, no empirical study has examined the effects of multiple COOs simultaneously from the perspective of location where the service is delivered (COSD) and individuals who deliver the service (COP), in addition to the effect of COB origin.
Research partnerships – embracing user involvement: practical considerations and reflections
Authors: O’Sullivan Roger 
Published: November 2018

Purpose
Academic researchers are increasingly required, and rightly so, to demonstrate the impact of their work beyond the gates of the university. This has led to an increasing focus, especially in response to funded calls, on developing research partnerships that cross disciplines, sectors and borders to help address our grand societal challenges. The purpose of this paper is to set out learning from the work of the organisation the Centre for Ageing Research and Development in Ireland (CARDI) and reflections on how to bring forward effective research partnerships involving users.

Design/methodology/approach
This paper is based on reflections and learning from the organisation CARDI which delivered a highly successful programme of interdisciplinary, cross-sectoral and cross-country research partnerships in both rural and urban areas between 2007 and 2015, across the island of Ireland.

Findings
Research partnerships that wish to involve users require time, commitment, support, understanding and a willingness to change and be challenged. This paper highlights that there are methodological, philosophical, moral, economic and of course, practical aspects to be considered.

Research limitations/implications
This reflective paper is based on a case study from the island of Ireland during the period 2007–2015 working in the area of ageing and older people.

Practical implications
The author emphasises that for research partnerships involving users to be successful, they need to not only consider the most effective research methods but also focus on the overarching purpose of the work and adopt an ethos and practice that maximises each partner’s knowledge and expertise to their full potential.

Social implications
This reflective paper focused on the characteristics associated with partnership success, i.e. communication style, values, philosophy and practice and argues that establishing effective and inclusive partnerships requires time, the appropriate framework and reviewing the process on an ongoing basis.

Originality/value
The issue of user involvement in research partnerships requires much more consideration. Researchers, government, funders, businesses and service providers are increasingly recognising the benefits of “user” involvement to help design programmes and services that are most effective. Nowhere is this more important than in planning and delivering services, policy and programmes for our ageing population.
EHMP-DLP: multi-projector DLP with energy homogenization for large-size 3D printing
Authors: Wu Lifang , Zhao Lidong , Jian Meng , Mao Yuxin , Yu Miao , Guo Xiaohua 
Published: November 2018

Purpose
In some three-dimensional (3D) printing application scenarios, e.g., model manufacture, it is necessary to print large-sized objects. However, it is impossible to implement large-size 3D printing using a single projector in digital light processing (DLP)-based mask projection 3D printing because of the limitations of the digital micromirror device chips.

Design/methodology/approach
A multi-projector DLP with energy homogenization (EHMP-DLP) scheme is proposed for large-size 3D printing. First, a large-area printing plane is established by tiling multiple projectors. Second, the projector set’s tiling pattern is obtained automatically, and the maximum printable plane is determined. Third, the energy is homogenized across the entire printable plane by adjusting gray levels of the images input into the projectors. Finally, slices are automatically segmented based on the tiling pattern of the projector set, and the gray levels of these slices are reassigned based on the images of the corresponding projectors.

Findings
Large-area high-intensity projection for mask projection 3D printing can be performed by tiling multiple DLP projectors. The tiled projector output energies can be homogenized by adjusting the images of the projectors. Uniform ultraviolet energy is important for high-quality printing.

Practical implications
A prototype device is constructed using two projectors. The printable area becomes 140 × 210 mm from the original 140 × 110 mm.

Originality/value
The proposed EHMP-DLP scheme enables 3D printing of large-size objects with linearly increasing printing times and high printing precision. A device was established using two projectors to practice the scheme and can easily be extended to larger sizes by using more projectors.
The risk associated with strategic decisions: is it a marketing issue?
Authors: Settembre-Blundo Davide , Fernández del Hoyo Alfonso Pedro , García-Muiña Fernando Enrique 
Published: November 2018

Purpose
The purpose of this paper is to analyze the strategic management of risks in companies from a marketing management perspective and to provide some guidance for management practice.

Design/methodology/approach
This paper presents the authors’ viewpoint, and it conceptualizes a new approach to risk management.

Findings
The conceptual discussion has opened up a possible new way for enterprises, especially SMEs, to start taking a strategic approach to risk.

Originality/value
This paper would like to contribute to the current debate on the role of marketing function in managerial practice beyond the classic four Ps.
Exploring and consolidating the brand personality elements of the political leader
Authors: Jain Varsha , Chawla Meetu , Ganesh B.E. , Pich Christopher 
Published: November 2018

Purpose
This study aims to examine brand personality and its application to political branding. This study focuses on the brand personality of a political leader from the BJP Party brand (Bharatiya Janta Party). The development of a strong political brand personality is crucial for success at the polls. Little research has been dedicated to this phenomenon particularly beyond Western political and post-election contexts.

Design/methodology/approach
The scope and development of the study required a qualitative approach. The theoretical frameworks of the study acted as the deductive base of the study. The insights of the respondents were the inductive base of the study. Semi-structured interviews were conducted with external stakeholders [voters]. In addition, semi-structured interviews were also adopted to capture the branding activities used by internal stakeholders [BJP].

Findings
The brand personality dimensions such as sincerity; agreeableness, competence, energy, openness, conscientiousness and emotional stability were clearly associated with a political leader. Negative qualities such as dictatorial attitudes and arrogance affected the political leader’s brand personality. Religious partisanship was another strong negative trait affecting the brand personality of the political leader.

Originality/value
The study has an actionable framework for political brand personality in the post-election context. It offers negative qualities to be avoided in the development of the political brand personality of the leader. It offers insights about the political brand personality of the leader in terms of young digitally savvy voters.
Realizing your strategy’s potential: a seven-step model for its effective execution
Authors: Galpin Timothy J. 
Published: November 2018

Purpose
A seven-step Strategy Execution Model provides a tested guide to agile implementation.

Design/methodology/approach
Pragmatic actions, key deliverables and a case example for each of the seven steps in the model are presented.

Findings
Firms that focus more on strategic planning than implementation are often plagued with execution issues. Whereas, organizations that are able to execute their strategies as a well managed, integrated process have a much better chance of realizing the full potential of their plans.

Practical implications
Supporting the experience of numerous management teams, research indicates that poor execution often squanders the value companies anticipate from innovative, advantageous strategic initiatives. To minimize the likelihood of mismanagement, companies need a repeatable process that provides an integrated and actionable approach to effective strategy execution.

Originality/value
Senior executives and middle managers need a structured, coordinated system for managing strategy implementation. The author’s seven-step method has been tested in practice and refined. It emphasizes communication and agile adaptability.
Effect of cytomegalovirus infection and leukocyte immunoglobulin like receptor B1 polymorphisms on receptor expression in peripheral blood mononuclear cells
Authors: Cadena‐Mota Sandra , Monsiváis‐Urenda Adriana , Salgado‐Bustamante Mariana , Monjarás‐Ávila César , Bernal‐Silva Sofía , Aranda‐Romo Saray , Noyola Daniel E. 
Published: November 2018

ABSTRACTLeukocyte immunoglobulin like receptor B1 (LILRB1) plays a significant role in a number of infectious, autoimmune, cardiovascular, and oncologic disorders. LILRB1 expression varies between individuals and may be associated with polymorphisms on the regulatory region of the LILRB1 gene, as well as to previous cytomegalovirus infection. In this study, the contribution of these two factors to LILRB1 expression in peripheral blood mononuclear cells of healthy young adults was analyzed. LILRB1 expression in NK cells, T cells, B cells and monocytes was significantly stronger in individuals who had had cytomegalovirus infection than in those who had not (P < 0.001, P < 0.001, P < 0.01, and P < 0.001, respectively). Overall, no differences in LILRB1 expression were observed between individuals with and without GAA haplotypes of the LILRB1 regulatory region. However, when analyzed according to cytomegalovirus infection status, significant differences in LILRB1+ NK cells were observed. A higher proportion of LILRB1+ cells was found in GAA+ than in GAA− individuals who had not been infected (P < 0.01), whereas GAA− individuals had a larger proportion of LILRB1+ cells than GAA+ individuals who were cytomegalovirus positive (P < 0.01). In conclusion, cytomegalovirus infection has a major effect on LILRB1 expression in NK and other mononuclear cells and polymorphisms in the LILRB1 regulatory region appear to have a modulatory influence over this effect.
Advanced three‐dimensional seismic imaging of deep supercritical geothermal rocks in Southern Tuscany
Authors: Jusri Tomi , Bertani Ruggero , Buske Stefan 
Published: November 2018

ABSTRACTThe seismic K‐Horizon is the key to gaining understanding on the deep supercritical geothermal rocks in Southern Tuscany. The K‐Horizon is hosted in metamorphic rocks, which cause strong seismic wavefield scattering resulting in a poor signal‐to‐noise ratio. Our study aims to reveal high‐resolution seismic images of the K‐Horizon below a geothermal field in Southern Tuscany, using an advanced three‐dimensional seismic depth imaging approach. The key seismic pre‐processing steps in the time domain include muting a large amount of persistent noise based on the statistical analysis of the seismic amplitudes, and tomostatics technique to correct for static effects. We carried out seismic depth imaging using Kirchhoff Pre‐Stack Depth Migration and Fresnel Volume Migration techniques. Each migration technique was tested with constant and heterogeneous three‐dimensional velocity models. Due to the difficulties in determining emergent angles for this low signal‐to‐noise ratio data set, the migration results with the heterogeneous three‐dimensional velocity model show less coherent reflections compared to the migration results using the constant velocity model. Both velocity models however lead to relatively the same structure and depth of the K‐Horizon, indicating the similarity of the average velocities along the wave propagation paths in both velocity models. With both velocity models Fresnel Volume Migration yields the K‐Horizon with better reflection coherency and higher signal‐to‐noise ratio than standard Kirchhoff Pre‐Stack Depth Migration. Nevertheless, both migration techniques have been able to reveal the K‐Horizon with relatively high resolution and provide a reliable basis for geothermal rock characterization as well as steering of the first geothermal well penetrating the K‐Horizon.
Agency of internal transnationalism in social memory
Authors: Bekus Nelly 
Published: November 2018

AbstractThe article examines the limitations of methodological nationalism in the studies of social memory through a case study of memory of Stalinist repression in Belarus. It analyses how various social agencies – national and local activists, religious organisations, and international foundations – use the memory of repression for constructing post‐Soviet Belarusian identity by embedding their national representations in larger transnational frameworks. Drawing on the concept of ‘internal globalisation’, this article develops the idea of ‘internal transnationalism’ that suggests the importance of wider transnational configurations for the definition of nation. Internalized transnationalism does not make a national memory concept less nation‐centred, but it affects the choice of its cultural, political and civilizational framing. In contrast to methodological cosmopolitanism that implies rediscovering of the national as an internalized global, methodological transnationalism emphasizes the multiplicity of co‐existing transnational networks that can be invoked by social actors in their national mnemonic agenda. Using the case of the Kurapaty memorial site the article analyses how multiple framings of memory representations – the Belarusian national memory, liberal anti‐communist memory, contesting memories, such as Polish, Baltic and Jewish – compete and juxtapose in the space of social memory of political repression.
Route of hysterectomy: a retrospective, cohort study in English NHS Hospitals from 2011 to 2017
Authors: Madhvani K , Curnow T , Carpenter T 
Published: November 2018

ObjectiveTo assess variation in the route of hysterectomy over 7 years and to assess regional variation in practice.DesignRetrospective cohort study.SettingEnglish NHS Hospitals 2011–2017.Population230 876 patients having a hysterectomy for six diagnostic categories (endometrial cancer, endometriosis and pain, menstrual disorders, fibroids, benign adnexal masses, and ‘other’) identified from Hospital Episode Statistics.MethodsThe proportion of hysterectomies carried out by each route was calculated for each year overall and for each primary diagnosis by year. Comparisons between 2011 and 2017 were via chi‐square test. Rank correlation coefficients were calculated to assess trends over the study period. Analysis of regional variation in practice was restricted to 2017. A multivariable logistic regression was performed to obtain crude and adjusted odds of having a minimal access hysterectomy.Main outcome measuresThe proportion of abdominal, vaginal, laparoscopic, and failed laparoscopic procedures for each primary diagnosis by study year. Odds of a minimal access hysterectomy in 2017.ResultsThe proportion of hysterectomies performed laparoscopically increased from 20.2% in 2011 to 47.2% in 2017, as did the proportion of failed laparoscopic procedures; 1.7% in 2011 to 2.8% in 2017. The proportion of abdominal hysterectomies decreased from 70.4% in 2011 to 46.5% in 2017. There was a smaller decrease in vaginal procedures from 7.8% in 2011 to 3.5% in 2017. Regional variation in the route of hysterectomy was demonstrated in 2017, which persisted when adjusted for confounding factors.ConclusionsThe proportion of laparoscopic procedures has increased, and it was the commonest route of hysterectomy for this cohort in 2017. There were significant regional differences in route of hysterectomy in 2017.Tweetable abstractIncreasing laparoscopic hysterectomy and decreasing abdominal hysterectomy rates from 2011 to 2017 with regional variation in practice.