bluuebunny/crossref_metadata_2025_split huggingface dataset:
Residents as destination advocates: the role of attraction familiarity on destination image
Authors: Kesgin Muhammet , Murthy Rajendran S. , Pohland Linden W. 
Published: March 2019

PurposeEmphasizing the role of residents as destination advocates, the purpose of this paper is to investigate the influence of residents’ familiarity with, and, favorability of attractions on destination image.Design/methodology/approachA mixed methods research strategy was employed using 15 individual in-depth interviews and a survey questionnaire with a sample ofn=364. The study utilizes an attraction familiarity index to classify respondents into four groups based on high, average, and low familiarity and examines the characteristics of each in the relationship between informational familiarity, experiential familiarity, and favorability and destination image.FindingsThe study reveals resident perceptions of attractions within the tourism product assembly framework and illustrates the positive relationship between the residents’ level of familiarity with, and favorability of visitor attractions and destination image. Further, the findings also demonstrate the significant role of demographic characteristics such as gender and length of residency in the area. The study findings suggest that temporary residents can function as destination advocates.Research limitations/implicationsEmployees and students from a prominent northeastern university were sampled, representing local residents and temporary residents respectively. While appropriate and fairly representative of the target market for the research questions in this investigation, more work is required to replicate this study utilizing representative samples across different locations.Practical implicationsEvidence from the study indicates the importance of marketing to residents as they serve as destination advocates. In particular, the residents’ familiarity with and favorability of attractions is critical to positive destination image. The research offers insights into the identification of potential segments of residents that require special attention.Originality/valueLimited existing research investigates the role of residents as destination advocates, especially in the context of destinations that lack a primary tourism attraction but have a well-balanced mix of attractions.
Talent management under a big data induced revolution
Authors: Zhang Kaidi , Jia Xiao , Chen Jin 
Published: March 2019

PurposeThe emerging natures of big data – volume, velocity, variety, value and veracity – exert higher stress on employees and demand greater creativity from them, causing extreme difficulties in the talent management of organizations in the big data era. The purpose of this paper is to explore the effect of challenge stressors on creativity and the boundary conditions of the relationship.Design/methodology/approachMultisource data were collected including 593 followers and their 98 supervisors from organizations that are confronting a big data induced management revolution. Hierarchical regression analysis and bootstrapping analysis were used to test the mediation and moderation mechanism.FindingsThe results showed that job burnout mediated the negative relationship between challenge stressors and creativity and that this indirect effect was attenuated by an employee’s core self-evaluation (CSE) and servant leadership. In contrast, whether work engagement mediated the relationship between challenge stressors and creativity was contingent on the level of an employee’s CSE and servant leadership. Specifically, the mediating effect was significant only when an employee’s CSE or servant leadership was high.Originality/valueThe results contribute to our understanding of the relationship between challenge stressor and creativity in the big data era. Specifically, relying on the job demands–resources model, this study empirically opens the “black box” between challenge stressors and creativity by exploring two opposing intermediate mechanisms. In addition, this study reveals boundary conditions by investigating dispositional and contextual factors that can accentuate the positive effect while attenuating the negative effect of challenge stressors on employee creativity.
Antecedents and consequences of managerial decision-making styles in the Arabian Gulf
Authors: Siddique C. Muhammad , Siddique Hinna Fatima 
Published: March 2019

Purpose
This paper aims to examine managerial decision-making approaches, their antecedents and consequences in the Arabian Gulf context. Using recent survey data, the study offers a critical assessment of prevailing myths about decision-making styles in the Arabian Gulf.

Design/methodology/approach
Survey data were collected from a sample of 432 managers working in public and private sector companies in the United Arab Emirates (UAE). A combination of statistical techniques including confirmatory factor analysis (CFA) and hierarchical regression analysis was used to test research hypotheses.

Findings
The findings of this study question the myth that UAE or Gulf managers mostly pursue consultative and participative styles of management. Most UAE managers continue to practice an autocratic and a pseudo-consultative style of decision-making, undermining the value of employee input in the decision-making process. The data revealed a strong negative relationship between autocratic management style and a range of personal and organizational outcomes such as job satisfaction, organizational commitment, organizational citizenship behavior, performance and innovative human resource management practices pertaining to work-family life balance and diversity programs. Most employees perceived autocratic management style as a major source of job stress, absenteeism and turnover. Socio-demographic characteristics of managers and their work organizations, considered as antecedents of decision-making styles, played a limited role in shaping decision-making approaches or their consequences. Globalization and associated socio-cultural changes that UAE and other Gulf region countries have experienced over the past two decades seem to have only a marginal impact on decision-making styles.

Research limitations/implications
Use of perceptual survey data places some constraints on the generalizability of our findings. Future research may address this issue with multiple data sources including an in-depth case study.

Practical implications
The findings of this research should be of special interest to both domestic and multinational companies in seeking alignment of their management approaches with the emerging competitive business environment in UAE and other Gulf countries. Theoretically, the paper documents the value of the continuum theory of managerial behavior in UAE and the Arabian Gulf context.

Originality/value
The study represents a first major effort to develop and test a comprehensive conceptual model of antecedents and consequences of managerial decision-making styles in UAE, which may be extended to other countries in the Arabian Gulf region. The value-added contribution of the study may be seen in its critical analysis of prevailing beliefs and assumptions about management practices in the Arabian Gulf.
Stepping off the drunkard’s path to walk the “wild side”
Authors: Brunker Nicole 
Published: March 2019

Purpose
Working creatively as a researcher should be a core foundation in doctoral studies, though it may be an isolating, even risky, endeavour. The purpose of this paper is to share the author’s journey through the “darkness” of innovation in research methodology.

Design/methodology/approach
At the heart of this research journey was Portraiture (Lawrence-Lightfoot, 1983), which emerged early in the post-modern evolution of qualitative research. While exploring Portraiture, the author found researchers used this methodology in varying ways: application, appropriation and interpretation. In stumbling through Portraiture, the author discovered patchwork as their bricoleur’s toolbag. Patchwork provided a torch that gave light to the darkness of the research process enabling interpretation of Portraiture for alignment of method and research problematic[1].

Findings
Looking back at the research journey, the author recognises the steps into post-qualitative research and the need for methodological innovators to share their journeys for inspiration, to develop understanding and open the way to greater creativity and innovation during the research process.

Originality/value
This paper provides an original view to Portraiture along with the addition of patchwork as a way of engaging with methodology as well as data.
An overview of use of nanoadditives in enhancing the properties of pavement construction binder bitumen
Authors: P. Deepa , Laad Meena , Sangita Sangita , Singh Rina 
Published: March 2019

Purpose
The purpose of this paper is to study the recent work carried out in enhancing the properties of bitumen using nano-additives. Bitumen is a by-product obtained from the refining process of crude oil, therefore making it a diminishing product. It has been used by mankind since ages for various applications like sealants, binders, waterproof coatings and pavement construction material. It is a black viscous substance with adhesive nature.

Design/methodology/approach
Bitumen is used as a binding material because of its ability to become liquid when heated and become solid when cooled and thus used largely in construction of roads because of its unique properties. Low softening point of bitumen leads to melting of bitumen during summer and causes rutting of roads, whereas during winter it leads to cracking as bitumen acts brittle in nature during low temperature. Increasing global demand of bitumen has created gap between demand and supply which is increasing with the passage of time. Further modern life has created very high traffic volume and heavy load which makes it essential to improve performance of bitumen.

Findings
Research studies have reported that the thermal properties of bitumen are enhanced by using thermoplastic polymers such as styrene-butadiene-styrene, polyethylene and ethylene-vinyl acetate, rubber and bio waste etc.

Originality/value
This paper reviews various types of materials which have been used to improve the properties of bitumen and explores the possibility to synthesise bitumen composite materials with nanoadditives with improved structural, mechanical and thermal properties.
A gray wolf optimized FPD plus (1+PI) multistage controller for AGC of multisource non-linear power system
Authors: Sahu Prakash Chandra , Prusty Ramesh Chandra , Panda Sidhartha 
Published: March 2019

Purpose
The paper has proposed to implement gray wolf optimization (GWO)-based filter-type proportional derivative with (FPD) plus (1+ proportional integral) multistage controller in a three-area integrated source-type interlinked power network for achieving automatic generation control.

Design/methodology/approach
For analysis, a three area interconnected power system of which each area comprises three different generating units where thermal and hydro system as common. Micro sources like wind generator, diesel generator and gas unit are integrated with area1, area2 and area3 respectively. For realization of system nonlinearity some physical constraints like generation rate constraint, governor dead band and boiler dynamics are effected in the system.

Findings
The supremacy of multistage controller structure over simple proportional integral (PI), proportional integral, derivative (PID) and GWO technique over genetic algorithm, differential evolution techniques has been demonstrated. A comparison is made on performances of different controllers and sensitivity analysis on settling times, overshoots and undershoots of different dynamic responses of system as well as integral based error criteria subsequent a step load perturbation (SLP). Finally, sensitive analysis has been analyzed by varying size of SLP and network parameters in range ±50 per cent from its nominal value.

Originality/value
Design and implementation of a robust FPD plus (1 + PI) controller for AGC of nonlinear power system. The gains of the proposed controller are optimized by the application of GWO algorithm. An investigation has been done on the dynamic performances of the suggested system by conducting a comparative analysis with conventional PID controller tuned by various optimization techniques to verify its supremacy. Establishment of the robustness and sensitiveness of the controller by varying the size and position of the SLP, varying the loading of the system randomly and varying the time constants of the system.
Choices of sampling method bias functional components estimation and ability to discriminate assembly mechanisms
Authors: Lee Roger H. , Guénard Benoit 
Published: March 2019

Abstract

The understanding and prediction of species distributions have been advanced by the development of community assembly theories and functional trait‐based approaches. Coupled with null models, trait dispersion patterns are commonly used to gauge the relative importance of niche versus neutral‐based processes on shaping local communities. However, asymmetrical trait dispersion patterns of identical communities may artificially arise as a result of sampling methods choice. This non‐random filtering on traits is overlooked, and it may bias the estimation of functional components as well as the detection of underlying assembly mechanisms—especially for species‐rich arthropod communities.

We sampled subtropical ground‐dwelling ant communities using a paired treatment design comprising pitfall traps and Winkler extractors (Winklers), two commonly used sampling techniques for terrestrial arthropods, in 17 shrublands and 33 secondary forest 400 m2 plots in Hong Kong to determine the effect of sampling filters on functional composition (community means of six morphological traits) and functional diversity (range and variance of individual traits; size and filling properties of multidimensional trait space) using a null model approach for each habitat.

We found, as hypothesized, that sampling filters from different methods affected the trait composition and diversity of ant communities asymmetrically. In shrublands and forests, the trait compositions of communities sampled by pitfall traps were dominated by larger sized, slender‐shaped and long‐legged ants as compared to those sampled by Winklers. The latter method also underestimated the diversity of individual traits related to body size as well as the size and filling properties of multidimensional trait space.

Our results highlight that the usage of particular sampling methods without prior knowledge on their potential filtering effects on traits can affect the detection of assembly processes, and interpretation of functional proxies, such as body size. Additional care should be taken when comparing trait components obtained from studies using different sampling methods, so as to distinguish the sampling artefacts from actual ecological phenomena. Hence, it is important to consider the potential biases that different sampling methods may introduce to functional trait‐based research.
Reduced Compsilura concinnata parasitism of New England saturniid larvae
Authors: Baranowski Alex K. , Conroy Catherine , Boettner George H. , Elkinton Joseph S. , Preisser Evan L. 
Published: March 2019

Abstract
In the northeastern U.S.A., the non‐native generalist parasitoid Compsilura concinnata, introduced in the early 20th Century to control forest pests, has been linked to the decline of giant silk moths (Lepidoptera: Saturniidae).
Field research conducted in New England in the late 1990s on two saturniid species, Hyalophora cecropia and Callosamia promethea, found that C. concinnata parasitized 81% and 68%, respectively, when larvae were reared outdoors and replaced weekly. These parasitism rates, extrapolated over the larval period, would prevent any larvae from reaching pupation.
In 2017 and 2018, this field experiment was repeated using these same two saturniid species for the same duration and at the same site, location and time of year. In 2017, C. concinnata parasitized only 19% of H. cecropia larvae and 1% of C. promethea larvae; in 2018, parasitism rates were 3% and 0%, respectively.
Marginal Analysis of Ordinal Clustered Longitudinal Data With Informative Cluster Size
Authors: Mitani Aya A. , Kaye Elizabeth K. , Nelson Kerrie P. 
Published: March 2019

Abstract
The issue of informative cluster size (ICS) often arises in the analysis of dental data. ICS describes a situation where the outcome of interest is related to cluster size. Much of the work on modeling marginal inference in longitudinal studies with potential ICS has focused on continuous outcomes. However, periodontal disease outcomes, including clinical attachment loss, are often assessed using ordinal scoring systems. In addition, participants may lose teeth over the course of the study due to advancing disease status. Here we develop longitudinal cluster-weighted generalized estimating equations (CWGEE) to model the association of ordinal clustered longitudinal outcomes with participant-level health-related covariates, including metabolic syndrome and smoking status, and potentially decreasing cluster size due to tooth-loss, by fitting a proportional odds logistic regression model. The within-teeth correlation coefficient over time is estimated using the two-stage quasi-least squares method. The motivation for our work stems from the Department of Veterans Affairs Dental Longitudinal Study in which participants regularly received general and oral health examinations. In an extensive simulation study, we compare results obtained from CWGEE with various working correlation structures to those obtained from conventional GEE which does not account for ICS. Our proposed method yields results with very low bias and excellent coverage probability in contrast to a conventional generalized estimating equations approach.
High Dimensional Mediation Analysis With Latent Variables
Authors: Derkach Andriy , Pfeiffer Ruth M. , Chen Ting-Huei , Sampson Joshua N. 
Published: March 2019

Abstract
We propose a model for high dimensional mediation analysis that includes latent variables. We describe our model in the context of an epidemiologic study for incident breast cancer with one exposure and a large number of biomarkers (i.e., potential mediators). We assume that the exposure directly influences a group of latent, or unmeasured, factors which are associated with both the outcome and a subset of the biomarkers. The biomarkers associated with the latent factors linking the exposure to the outcome are considered “mediators.” We derive the likelihood for this model and develop an expectation-maximization algorithm to maximize an L1-penalized version of this likelihood to limit the number of factors and associated biomarkers. We show that the resulting estimates are consistent and that the estimates of the nonzero parameters have an asymptotically normal distribution. In simulations, procedures based on this new model can have significantly higher power for detecting the mediating biomarkers compared with the simpler approaches. We apply our method to a study that evaluates the relationship between body mass index, 481 metabolic measurements, and estrogen-receptor positive breast cancer.
Comparison between pars plana and anterior endoscopic cyclophotocoagulation for the treatment of glaucoma
Authors: Feinstein Max A. , Lee Jun H. , Amoozgar Behzad , Liu Kelsey , Stewart Jay M. , Lazcano‐Gomez Gabriel , Porco Travis , Han Ying 
Published: March 2019

AbstractImportanceThis is the first study to compare the efficacy and safety of endocyclophotocoagulation (ECP) via pars plana (ECP‐plus) with ECP via limbus (anterior ECP) for treating glaucoma.BackgroundThere is no direct comparison of treatment outcomes between ECP‐plus and anterior ECP.DesignRetrospective study.ParticipantsFifty‐four consecutive patients.MethodsFifty‐eight eyes from 54 consecutive patients underwent anterior ECP (33 eyes) or ECP‐plus (25 eyes) with 2‐year follow‐up. Linear mixed model was used to analyse the surgical outcomes.Main Outcome MeasuresIntraocular Pressure (IOP) was the primary outcome. Secondary outcomes were best‐corrected visual acuity, number of glaucoma medications, complications and success rate.ResultsCompared to anterior ECP, patients in the ECP‐plus group had lower IOP (estimate of effect size [EES] = −3.7 mmHg, P = 0.023) and used fewer number of glaucoma medications (EES = −1.11, P = 0.003), after adjusting for degrees of treatment, preoperative IOP, and presence of combined ECP and phacoemulsification procedure. Patients with ECP‐plus achieved a higher success rate at 2 years postoperatively (80% vs 33.3%, P < 0.001). The decrease in IOP between the preoperative and last follow‐up visit was greater in the ECP‐plus group compared to the anterior ECP group (14.3 mmHg (52%) vs 5.2 mmHg (24%), P = 0.001). There was no significant difference in complication rates between the two groups (28% vs 33%, P = 0.561).Conclusions and RelevanceAnterior ECP and ECP‐plus have a similar safety profile, and ECP‐plus may offer superior IOP control for the management of glaucoma.
Anterior atrophic mandible restoration using cancellous bone block allograft
Authors: Chaushu Liat , Chaushu Gavriel , Kolerman Roni , Vered Marilena , Naishlos Sarit , Nissan Joseph 
Published: March 2019

AbstractBackgroundBone block grafting may be required to restore the alveolar process prior to implant placement in Kennedy Class IV partial edentulism of the anterior mandible.PurposeEvaluate the application of allograft cancellous bone blocks for the augmentation of the anterior atrophic mandible.Materials and MethodsFourteen consecutive patients underwent augmentation with cancellous bone block allografts in the anterior mandible. A bony deficiency of at least 3 mm horizontally and up to 3 mm vertically according to computerized tomography para‐axial reconstruction served as inclusion criteria. Following 6 months, 26 implants were placed and a cylindrical sample core was collected. All specimens were prepared for histological and histomorphometrical examination. The rehabilitation scheme was two dental implants, placed in the lateral incisor area, supporting a 4‐unit implant‐supported prosthesis.ResultsTwenty‐four blocks were placed in 14 patients. Mean follow‐up was 26 ± 17 months. Mean bone gain was 5 ± 0.5 mm horizontally, and 2 ± 0.5 mm vertically. Twenty‐six implants were used. Marginal bone loss at last follow up did not extend beyond the first thread. Block and implant survival rates were 91.6% and 100%, respectively. All patients but one received a fixed implant‐supported prosthesis. Histomorphometrically, the mean fraction of the newly formed bone was 42%, that of the residual cancellous block‐allograft 17%, and of the marrow and connective tissue 41%.ConclusionsThe potential of cancellous bone block allografts for reconstruction of Kennedy Class IV partial edentulism in the anterior mandible seems promising but still has to be evaluated scientifically in long‐term observations.