bluuebunny/crossref_metadata_2025_split huggingface dataset:
New correlations for wavy plate-fin heat exchangers: different working fluids
Authors: Khoshvaght Aliabadi Morteza , Hormozi Faramarz , Hosseini Rad Elham 
Published: May 2014

Purpose– The main purpose of this paper is the generation of the heat transfer and pressure drop correlations by considering three working fluids, namely air, water, and ethylene glycol, for the wavy plate-fin heat exchangers (PFHEs).Design/methodology/approach– In order to present the general correlations, various models with different geometrical parameters should be tested. Because of the problems, such as difficult, long time, and costly fabrication of the wavy fins in experimental tests, computational fluid dynamics (CFD) calculations can be a useful method for the generation of the heat transfer and pressure drop correlations with eliminating the experimental problems. Hence, the effective design parameters of the wavy plate-fin, including fin pitch, fin height, wave length, fin thickness, wave amplitude, and fin length, and also their levels were recognized from the literature. The Taguchi method was applied to formulate the CFD simulation work.Findings– The simulation results were compared and validated with an available experimental data. The mean deviations of the Colburn factor,j, and Fanning friction factor,f, values between the simulation results and the experimental data were 3.74 and 9.07 percent, respectively. The presented air correlations and experimental data were in a good agreement, so that approximately 95 percent of the experimental data were correlated within ±12 percent. The j factor values varied for the different working fluids, while the f factor values did not sensibly change.Practical implications– The presented correlations can be used to estimate the thermal-hydraulic characteristics and to design of the compact PFHE with the wavy channels.Originality/value– This manuscript presents the new correlations for the compact PFHEs with the way channels by considering all the geometrical parameters and the working fluids with the different Prandtl numbers, 0.7, 7, and 150.
Flow over a heated block in a vertical channel
Authors: Zaman Shuja Shahzada , Yilbas Bekir 
Published: May 2014

Purpose
– The heat transfer rates from the body to the working fluid can be improved through altering geometric configurations of the body and its arrangement in the flow system. One of the arrangements for this purpose is to locate the body at the channel inlet while the convection current opposes it. Since the flow field in the channel inlet influences the heat transfer rates, changing the aspect ratio and inclination of the body is expected to modify the flow field while enhancing the heat transfer rates. Consequently, investigation into the influence of the aspect ratios and tilting angles of the body on the heat transfer rates in the channel flow becomes essential. The paper aims to discuss these issues.

Design/methodology/approach
– Numerical simulation of flow in a channel with the presence of solid block is carried out. The block aspect ratio is changed while keeping the area of the block constant for all aspect ratios. The tilting angle is also incorporated analysis to examine its effect on the Nusselt number.

Findings
– The throttling effect of the block at channel inlet accelerates the flow between the channel wall and the block faces. This, in turn modifies the thermal boundary layer around the block. In this case, heat transfer rates increase considerably at the block faces where the flow acceleration suppresses the thermal boundary layer thickness. This is more pronounced for large block tilting angles. The Nusselt number attains low values for the block face opposing to the flow at the channel inlet and the back face of the block. This is attributed to the mixing of the thermal current emanating from the side faces of the block in the region close to the back surface. In this case, thermal boundary layer thickens and the heat transfer rates from the block reduce significantly. The Nusselt number improves with reducing the block aspect ratio, which is particularly true along the side faces of the block. In addition, the influence of the block tilting angle on the Nusselt number is considerable for the low block aspect ratios.

Research limitations/implications
– The model study is validated with the previous studies for the drag coefficient. The study covers all the aspects of the flow situations and discusses the resulting fluid field and the heat transfer rates from the block.

Practical implications
– It is an interesting work for cooling applications. The block aspect ratio and its tilting angle in the channel influence considerably the flow field and the Nusselt number variation around the block faces.

Social implications
– The cooling technology may be improved through implementing the findings of the current work.

Originality/value
– It is an original work and it has never been submitted to other journals.
Depression affecting work performance: gender differentials across occupations
Authors: Arocena Pablo , Nuñez Imanol 
Published: May 2014

Purpose
– The purpose of this paper is to study the incidence of depression affecting work (DAW) performance and estimates gender differences across occupations.

Design/methodology/approach
– Using Labor Force Survey data from the UK in 2007, the authors first decompose the differential on the aggregate incidence rate of DAW between men and women into two components: the gender effect and the occupational effect. Then, the authors identify the stressors of DAW by means of a logit regression analysis.

Findings
– The empirical results show that gender is not a significant explanatory variable of DAW. Further, when differences are analyzed for each gender separately, results show that the effect of occupations is stronger within females than within males.

Originality/value
– Most of previous studies focus on occupational causes of depression. By contrast, this paper investigates the effect of depression on work performance.
Non-response bias assessment in logistics survey research: use fewer tests?
Authors: A. Clottey Toyin , J. Grawe Scott 
Published: May 2014

Purpose
– The purpose of this paper is to consider the concepts of individual and complete statistical power used for multiple testing and shows their relevance for determining the number of statistical tests to perform when assessing non-response bias.

Design/methodology/approach
– A statistical power analysis of 55 survey-based research papers published in three prestigious logistics journals (International Journal of Physical Distribution and Logistics Management, Journal of Business Logistics, Transportation Journal) over the last decade was conducted.

Findings
– Results show that some of the low complete power levels encountered could have been avoided if fewer tests had been used in the assessment of non-response bias.

Originality/value
– The research offers important recommendations to scholars engaged in survey research as they assess the effects of non-respondents on research findings. By following the recommended strategies for testing non-response bias, researchers can improve the statistical power of their findings.
Accessibility as an integral factor in e-government web site evaluation
Authors: Kamoun Faouzi , Basel Almourad Mohamed 
Published: May 2014

Purpose– The purpose of this paper is to examine the extent to which accessibility is taken into account in the assessment and ranking of e-government web sites through the lens of a specific study related to Dubai e-government.Design/methodology/approach– The paper considers a case study related to Dubai e-government and it evaluates the accessibility of each of the 21 Dubai e-government web sites, based on the Web Content Accessibility Guidelines (WCAG) 2.0 and using an automated accessibility testing tool. A bivariate correlation analysis is performed to assess the correlation between web site ranking and accessibility score.Findings– The research reveals that contrary to common intuition and some earlier studies, there is a weak correlation between e-government web site ranking score and web site accessibility.Research limitations/implications– The paper uses an accessibility metric that is a proxy indicator of web accessibility and is not a real assessment of accessibility as experienced by a person with disability.Practical implications– When re-examined through the lens of Rawls's moral theory, this research suggests that accessibility should be given a higher priority in the general evaluation and ranking of e-government web sites.Social implications– The paper promotes universal accessibility to e-government information and services.Originality/value– The paper uses ethical arguments to highlight the need to comprehensively consider accessibility as a major criterion in the assessment and ranking of e-government web sites.
Teekay Shipping Corporation case analysis
Authors: Poulakidas Angela 
Published: May 2014

Purpose
– The competitive pressures of the past several years and the ongoing financial meltdown has driven most tanker owners and operators to rethink their business strategy. In addition, new green technologies are providing opportunities to reduce the environmental impact of the shipping industry. Given the parameters of the situation, this paper analyzes the case of Teekay Shipping, one of the market leaders. In particular, this paper addresses Teekay's specific advantages and their sustainability under rapidly changing competitive conditions.

Design/methodology/approach
– This paper utilizes a series of analytical methods to provide an exploratory understanding of Teekay's strategic positions. Teekay's business model will be analyzed in the context of social, technological, economic, environmental and political trends and SWOT analysis is also explored.

Findings
– The gaps in Teekay's business model in relation to growth opportunities and inconsistencies in its strategic efforts are revealed along with recommendations and conclusions. This paper contributes to a greater understanding of the complex and changing factors that shape the shipping industry, and should therefore lead to more effective nautical management.

Originality/value
– With the use of the discussed strategic management tools in this paper, which have proven successful in other industries, it can be expected to enhance Teekay's management of its business, proving another success for the cross-fertilization of ideas.
Organisational and leadership competencies for successful service integration
Authors: Aitken Kim , von Treuer Kathryn 
Published: May 2014

Purpose– The purpose of this paper is to describe a two-part study that has explored the organisational and leadership competencies required for successful service integration within a health consortia in Australia. Preliminary organisational and leadership competency frameworks were developed to serve as reference points as the consortia it expanded to cater for increased service demand in the midst of significant health reform.Design/methodology/approach– The study design is outlined, which involved literature reviews and semi-structured interviews with key stakeholders to ascertain the key determinants of successful service integration at both organisational and leadership levels.Findings– The literature reviews revealed little existing research specifically focused on the organisational and leadership competencies that underpin successful service integration. The themes from the literature reviews and semi-structured interviews informed the preliminary organisational and leadership competency frameworks. Both frameworks are outlined in the paper. Key determinants of successful service integration – at both an organisational and individual leadership level – are also presented.Research limitations/implications– This is a one-organisation case study and the competency frameworks presented are preliminary. However, the study findings provide a foundation for further research focusing on the longer-term success of service integration.Originality/value– Service integration in health is a new and emerging area, and there is little extant research exploring the organisational and leadership competencies underpinning its success. The competency frameworks presented in the paper may be of interest to other consortia and organisations engaged in service integration and other forms of merger and collaboration.
Wisdom and narcissism as predictors of transformational leadership
Authors: E. Greaves Claire , Zacher Hannes , McKenna Bernard , Rooney David 
Published: May 2014

Purpose– Although leadership and organizational scholars have suggested that the virtue of wisdom may promote outstanding leadership behavior, this proposition has rarely been empirically tested. The purpose of this paper is to investigate the relationships between transformational leadership, narcissism, and five dimensions of wisdom as conceptualized by the well-established Berlin wisdom paradigm. General mental ability and emotional intelligence were considered relevant control variables.Design/methodology/approach– Interview, test, and questionnaire data were obtained from 77 employees of a high school and from two or three colleagues of each employee. Data were analyzed using hierarchical regression analyses.Findings– After controlling for general mental ability and emotional intelligence, narcissism and the wisdom dimension relativism of values and life priorities were negatively related to transformational leadership, and the wisdom dimension recognition and management of uncertainty was positively related to transformational leadership. The other three wisdom dimensions, rich factual knowledge about life, rich procedural knowledge about life, and lifespan contextualism, were not significantly related to transformational leadership.Research limitations/implications– Limitations to be addressed in future studies include the cross-sectional design and the relatively small and specialized sample.Practical implications– Tentative implications for leadership training and development are outlined.Originality/value– This multi-method and multi-source study represents the first empirical investigation that examines links between well-established wisdom and leadership constructs in the work context.
Multi‐taxa trait and functional responses to physical disturbance
Authors: Pedley Scott M. , Dolman Paul M. 
Published: May 2014

SummaryExamining assemblage trait responses to environmental stressors extends our understanding beyond patterns of taxonomic diversity and composition, with results potentially transferable among bioregions. But the degree to which trait responses may be generalized across taxonomic groups remains incompletely understood.We compared trait responses among carabids, spiders and plants to an experimentally manipulated gradient of physical disturbance, replicated in open habitats within a forested landscape. Recolonization of recently disturbed habitats is expected to favour species with traits that promote greater dispersal ability, independent of taxa. We specifically predicted that physical disturbance would increase the representation of carabids with smaller body size, wings or wing dimorphism, spiders able to disperse aerially, and plants with therophyte life‐history and wind‐dispersed seed.We sampled 197 arthropod species (14 738 individuals) and 164 species of plant. The strength of association between each trait and the disturbance intensity was quantified by correlating matrices of species by traits, species abundance by sites and sites by environment, with significance assessed by comparison with a null model.Responses of biological traits varied among taxa but could be consistently interpreted in terms of dispersal ability. Trait shifts for carabid and plant assemblages were as predicted and correspond to those observed in other disturbance regimes. Assemblages after disturbance comprised smaller and winged carabids, and smaller plants with wind‐dispersed seed, consistent with selection for species with better dispersal ability. In contrast, aerial dispersal did not appear important in spider recolonization, instead terrestrial dispersal ability was suggested by the increased abundance of larger‐bodied and cursorial species. However, larger spider body size was also associated with an active‐hunting strategy, also favoured in the post‐disturbance environment.Trait–function linkage differed among taxa and was sometimes diffuse, with covariance among biological traits and the mapping of individual traits to multiple ecological functions. In particular, body size responses reflected correlations with life history, susceptibility to perturbation and dispersal ability that were inconsistent between the two arthropod groups. Selection of traits for assessment should therefore be taxa specific. Generalizations of trait responses across taxa should only be conducted where functional or ecological significance of assembly‐level changes can be understood.
Politicising Praise: Panegyric and the Accession of Queen Anne
Authors: HONE JOSEPH 
Published: May 2014

AbstractThis essay argues for the importance of panegyric verse as a propagandist force in the early eighteenth century. Anne Stuart's accession in 1702 marked a major shift in the political landscape. Poets responded to the occasion by composing high‐flown panegyric celebrating the accession of a Stuart queen. Exploring the representational strategies employed by these poets, I argue that their panegyric was more than a straightforward vessel for royal praise. Rather, it was intended to shape the ways in which contemporaries understood the political import of the succession. Poets achieved this by manipulating Anne's image in politically advantageous ways.
Carving a Legacy: Public Sculpture of Queen Anne, c.1704‐1712
Authors: VAN HENSBERGEN CLAUDINE 
Published: May 2014

AbstractQuestions of Queen Anne's legacy have been much debated by historians of the period, who contest her role in securing the great achievements of her reign. This essay explores how contemporary public sculpture of the queen was used to create monuments to Anne's legacy, placing her at the centre of narratives that recorded the triumphs of the period. The essay focuses on two examples: Matthew Prior's involvement with plans for sculptural monuments to Anne in the early years of her reign, and Francis Bird's sculpture of the queen with radiating allegories at St Paul's Cathedral, unveiled in 1713.
‘The Rising Sun Gains Advantage’: The Iconography of George of Denmark as Royal Consort
Authors: TAYLOR DAVID A. H. B. 
Published: May 2014

AbstractThis essay considers the iconography of George of Denmark (1653‐1708), the consort of Queen Anne. Of the few male monarchical consorts in the British Isles, George of Denmark has received the least attention from historians, and in turn his portraiture has been overlooked. Unlike Philip II or Henry Stuart, Lord Darnley (previous consorts of queens regnant in England and Scotland respectively), George was not made king, and his lack of political power appears to have been addressed in his portraiture, where he appropriated earlier male Stuart portrait types and assumed the martial visual language of the male monarch.
Transnational Civil Society Activism and International Security Politics: From Landmines to Global Zero
Authors: Krause Keith 
Published: May 2014

AbstractEffective civil society activism in the high politics realm of international peace and security has not received sustained scholarly attention, and, at least until recently, was considered a ‘hard case,’ compared to other issue areas. This article reviews recent civil society efforts and assesses, in a preliminary fashion, some of the preconditions and constraints on transnational civil society activism in a range of security issues, from antipersonnel landmines to antinuclear campaigns. It concludes that high levels of policy uncertainty, the possibility of issue reframing, significant resources, and strategic partnerships are all key ingredients for effective civil society engagement. Conversely, vague or diffuse goals, the absence of state engagement, and policy stovepipes, all stand as obstacles to transnational activism.
Computer‐based analysis of general movements reveals stereotypies predicting cerebral palsy
Authors: Philippi Heike , Karch Dominik , Kang Keun‐Sun , Wochner Katarzyna , Pietz Joachim , Dickhaus Hartmut , Hadders‐Algra Mijna 
Published: May 2014

AimTo evaluate a kinematic paradigm of automatic general movements analysis in comparison to clinical assessment in 3‐month‐old infants and its prediction for neurodevelopmental outcome.MethodPreterm infants at high risk (n=49; 26 males, 23 females) and term infants at low risk (n=18; eight males, 10 females) of developmental impairment were recruited from hospitals around Heidelberg, Germany. Kinematic analysis of general movements by magnet tracking and clinical video‐based assessment of general movements were performed at 3 months of age. Neurodevelopmental outcome was evaluated at 2 years. By comparing the general movements of small samples of children with and without cerebral palsy (CP), we developed a kinematic paradigm typical for infants at risk of developingCP. We tested the validity of this paradigm as a tool to predictCPand neurodevelopmental impairment.ResultsClinical assessment correctly identified almost all infants with neurodevelopmental impairment includingCP, but did not predict if the infant would be affected byCPor not. The kinematic analysis, in particular the stereotypy score of arm movements, was an excellent predictor ofCP, whereas stereotyped repetitive movements of the legs predicted any neurodevelopmental impairment.InterpretationThe automatic assessment of the stereotypy score by magnet tracking in 3‐month‐old spontaneously moving infants at high risk of developmental abnormalities allowed a valid detection of infants affected and unaffected byCP.
SMAD inhibition attenuates epithelial to mesenchymal transition by primary keratinocytes in vitro
Authors: O'Kane Donal , Jackson Megan V. , Kissenpfennig Adrien , Spence Shaun , Damkat‐Thomas Lindsay , Tolland Julia P. , Smyth Anita E. , Denton Christopher P. , Stuart Elborn J. , McAuley Daniel F. , O'Kane Cecilia M. 
Published: May 2014

AbstractEpithelial to mesenchymal transition (EMT) is a process whereby epithelial cells undergo transition to a mesenchymal phenotype and contribute directly to fibrotic disease. Recent studies support a role for EMT in cutaneous fibrotic diseases including scleroderma and hypertrophic scarring, although there is limited data on the cytokines and signalling mechanisms regulating cutaneous EMT. We investigated the ability of TGF‐β and TNF‐α, both overexpressed in cutaneous scleroderma and central mediators of EMT in other epithelial cell types, to induce EMT in primary keratinocytes and studied the signalling mechanisms regulating this process. TGF‐β induced EMT in normal human epidermal keratinocytes (NHEK cells), and this process was enhanced by TNF‐α. EMT was characterised by changes in morphology, proteome (down‐regulation of E‐cadherin and Zo‐1 and up‐regulation of vimentin and fibronectin), MMP secretion and COL1α1 mRNA expression. TGF‐β and TNF‐α in combination activated SMAD and p38 signalling in NHEK cells. P38 inhibition with SB203580 partially attenuated EMT, whereas SMAD inhibition using SB431542 significantly inhibited EMT and also reversed established EMT. These data highlight the retained plasticity of adult keratinocytes and support further studies of EMT in clinically relevant in vivo models of cutaneous fibrosis and investigation of SMAD inhibition as a potential therapeutic intervention.