bluuebunny/crossref_metadata_2025_split huggingface dataset:
Outcomes With Overlapping Surgery at a Large Academic Medical Center
Authors: Ponce Brent A. , Wills Bradley W. , Hudson Parke W. , Huntley Samuel R. , Starnes Austin C. , Watson Shawna L. , Rue Loring W. , Perez Jorge L. , McGwin Gerald 
Published: February 2018

Objective:
The aim of the study was to evaluate the efficiency and safety of overlapping surgery (OS) at a training institution by comparing it with nonoverlapping surgery (NO) with respect to operative time, mortality, readmissions, and complications.

Background:
OS is the practice of an attending physician providing supervision to 2 surgeries that are scheduled at overlapping times. Recent media and government attention have raised concerns about this practice and the need for informed patient consent.

Methods:
A population-based, retrospective, cohort study was conducted using data on operative procedures from January 1, 2014 to December 31, 2015 at a large tertiary academic center. Patients who had undergone surgery by attending surgeons who performed ≥10% of their cases overlapping were selected. Thirty-day mortality, readmission within 30 days, and 7 patient safety indicators (PSIs) were recorded.

Results:
A total of 26,260 cases met our criteria for analysis for surgical time and 15,106 cases for outcomes. OS patients had an average case length of 2.18 hours compared with 1.64 hours among NO patients (P < 0.0001), a decreased risk of mortality [relative risk (RR) 0.42, 95% confidence interval (CI), 0.34–0.52, P < 0.0001), a decreased risk of readmission (RR 0.92, 95% CI, 0.86–0.98, P = 0.0148), and a decreased risk of experiencing any PSI (RR 0.67, 95% CI, 0.55–0.83, P = 0.0002).

Conclusions:
The present study confirms prior reports and addresses gaps in the literature regarding OS, such as the effect of resident involvement and the individual effect of OS in 13 different surgical specialties. The findings highlight the need for additional investigation and suggest that the practice of OS does not expose patients to increased risk of negative outcomes.
The effect of product line endpoint prices on vertical extensions
Authors: Pontes Nicolas Gonçalves 
Published: February 2018

PurposeLiterature in brand extensions has relied greatly on categorization theory and on prototypical models of categorization to explain the affect transfer from a parent brand to its extensions. Drawing on the range theory exemplar models of categorization, this paper aims to show the effects of parent brand endpoint prices on consumer judgments of vertical line extensions.Design/methodology/approachThree experiments have been conducted. Experiment 1 tests the hypothesis that consumers rely on the parent brand price range when making judgments of an upscale extension. Experiment 2 tests the hypothesis that the effect of price range on extension evaluation is mediated by perceived risks for upscale extensions but not downscale extensions. The final experiment shows a boundary condition to the product line range effect on upscale extensions.FindingsThis research shows that upscale extensions are judged more favorably in the context of a wide versus a narrow product line even when the highest endpoints in both product lines are equally close to the extension and that this effect is mediated by perceived consistency and perceived risk. The range effect disappears, however, when consumers have a broad focus in which attention shifts to category endpoint prices, making parent brand prices less diagnostic of upscale extension judgments.Practical implicationsManagers may display a wider range of products and/or reduce prices of low-end models to expand product line price width. In consequence, low-end products become more competitive in terms of price and at the same time improve favorability ratings of the new upscale product.Originality/valueVertical line extensions and product line pricing are important topics to both academics and practitioners. Nonetheless, this is the first research to demonstrate how product line price width can influence consumer perceptions of vertical line extensions.
Antecedents and outcomes of brand love: utilitarian and symbolic brand qualities
Authors: Bairrada Cristela Maia , Coelho Filipe , Coelho Arnaldo 
Published: February 2018

Purpose
Brand love is associated with consumer behaviours that are key for organisational performance. However, research on the antecedents of brand love is sparse. The current research draws on the information processing model as well as on the experiential approaches to consumer behaviour to develop a model comprising a novel set of antecedents.

Design/methodology/approach
To test the research hypotheses, we resort to two samples, which implied the collection of usable 1,018 questionnaires. For hypotheses testing, we resort to structural equation modelling.

Findings
Both functional constructs as well as more symbolic/emotional ones are positively associated with brand love. In addition, constructs with a more functional nature tend to have an indirect effect on brand love, whereas constructs with a higher level of abstraction tend to mediate the effects of more specific brand qualities. Finally, brand love is related with important outcomes, including loyalty, word of mouth and willingness to pay a premium price.

Research/limitations implications
This research has a cross-sectional nature. Moreover, we rely on a single informant, but the procedural remedies as well as the statistical tests we conducted suggest that common method variance is not a concern.

Practical implications
The findings suggest that managers should emphasise both functional as well as emotional/symbolic aspects to strengthen the links between brands and consumers, which will be beneficial for both sides.

Originality/value
This study is the first to investigate the relationship between a number of symbolic and functional brand aspects and the development of brand love feelings.
Calculation and analysis of energy consumption of Chinese national rail transport
Authors: Liu Jiangwei 
Published: February 2018

Purpose
The rail transport sector in China represents one of the largest consumers of energy today, and the primary purpose of this paper is to examine the causes of changes in energy consumption of Chinese national rail transport (ECCNRT).

Design/methodology/approach
For this study, reasonable indicators as factors that affected conversion volume (CV) and unit energy consumption (UEC) based on statistical data from 1990 to 2010 were selected. CV and UEC models were established by regression analysis and tested using real data of 2011-2014. The CV model indicates it has an exponential relationship with GDP. Besides, there is a quantitative relationship between UEC and the quantity of locomotives. The ECCNRT calculation model was proposed and ECCNRT model data were compared with the real data. Impacts of different factors on ECCNRT were analyzed with economic principles.

Findings
The analysis conducted shows that the calculation model can reflect variation of ECCNRT precisely, and ECCNRT has a quantitative relation with GDP and quantities of locomotives. GDP accounts for changes of ECCNRT 20.02 per cent, while those for quantity of diesel locomotives and electric locomotives are 26.87 and 53.11 per cent, respectively. The number of electric locomotives is the main factor that influences variation of ECCNRT.

Originality/value
Through regression analysis, this study discovered the inner quantitative relationship between the conversion volume (important index of Chinese national rail transport production) and GDP. In addition, this study establishes the ECCNRT model according to the Chinese national rail transport data, which can be used to calculate the amount of ECCNRT and conduct quantitative analysis for different impacts of various factors on ECCNRT’s changes.
Client orientation of central power generation companies
Authors: Fedosova Alina , Volkova Irina 
Published: February 2018

Purpose
This paper aims to identify the effects of client orientation on the business models of central power generation companies.

Design/methodology/approach
Five major Russian wholesale electricity market players have been selected for the analysis conducted by applying the “business model canvas”. To identify the changes induced by client orientation, the progress of companies’ business models has been traced over six years, from 2009 to 2015.

Findings
Five major trends in business model changes because of client orientation have been identified: declaration of the movement toward client orientation and adoption of client service standards; emergence of business diversification in favour of engineering, construction, service, operation and maintenance of power-generating facilities; increase in vertical integration; increase in the diversity of communication channels with consumers; and increase in the diversity of customer relationships. The results have been compared with those obtained from international studies. The conclusions about international and local characters of the trends are presented.

Originality/value
The study contributes to the knowledge of the current and upcoming changes in the business of central power generation companies triggered by the advent of electricity prosumers. The results are valuable for both management decision makers and theorists.
Will ‘doing right’ lead to ‘doing well’? An examination of green behavior
Authors: Sukhu Anupama , Scharff Robert 
Published: February 2018

Purpose
The purpose of this research was to identify the drivers of customer loyalty in the context of green marketing. In particular, the extended theory of reasoned action model specified here added crucial constructs in consumer behavior, namely, consumers’ trust and beliefs about corporate social responsibility, to increase the predictability of the model. Additionally, the moderating role of level of education in predicting customer loyalty to hotels was also examined.

Design/methodology/approach
A mixed methodology was used for the study. A structural mixed methodology was used for the study. A structural model was developed to understand the theoretical relationships between identified constructs. Additionally, multiple regression analyses were used to identify the moderating role of level of education in predicting consumer loyalty. Data collected through an online survey from 446 hotel guests were used for the analyses.

Findings
The results indicated that in addition to attitude and subjective norms, consumers’ trust in hotels’ intentions to be green influence their loyalty to green hotel enterprises. Further investigation also showed significant moderating influence of levels of education in their choice to be loyal to green hotels.

Research limitations/implications
Even though the majority of the study’s sample has extensive travel experience, the data were collected from university employees, which might have limited the findings of this study.

Practical implications
Consumers need to trust ethical claims in adopting green practices to become loyal customers. Hence, it is imperative for marketers to convey that their business believe in proenvironmental activities. Additionally, marketers should not neglect their level of education because it influences their loyalty to green hotels. Green marketing should target not only an individual customer but also his/her ties to significant others, because subjective norms influence customer loyalty to green hotels.

Originality/value
This research developed a comprehensive model to understand customer loyalty to green hotels, thus providing insights to marketers and academics about a timely subject, namely, green behavior. In doing so, this research added crucial constructs to extend the traditional model of theory of reasoned action as well as examined the moderating role of level of education in the identified model.
Modeling dynamic service recovery strategies: a signaling game approach
Authors: Hsieh Yen-Hao , Yeh Shu-Yu 
Published: February 2018

PurposeThe purpose of this study is to establish a comprehensive service recovery mechanism by analyzing different behaviors of customers with different personality traits after service failures and by proposing different service recovery measures that service providers could adopt based on diverse customer personality traits.Design/methodology/approachThis paper constructs a service recovery mechanism based on a signaling game theory by considering customers and service providers as two players in the game and analyzing possible outcomes under both separating and pooling equilibria to achieve an optimized strategy and set of actions that allow the highest payoffs for both service providers and customers.FindingsThis study successfully simulated the separating equilibrium and pooling equilibrium between service providers and customers in a signaling game with incomplete information. It also provides a reference for service providers to design service recovery strategies after service failures. By using this model, when facing problems related to service failures and service recovery, service providers will have a better chance of increasing the service recovery success rate, improving customer satisfaction and achieving optimal payoffs for both themselves and their customers.Originality/valueBased on concepts of service science, this study designed a service recovery mechanism by applying the signaling game from game theory and introducing personality traits theory to the service recovery scenario so that service providers are able to execute service recovery after service failures more effectively. This study proposed a service recovery mechanism based on the perspectives of both service providers and customers, considering the mutual influence of key variables related to both of them, as well as the context of service failures, customers’ personality traits and service providers’ available resources. Many studies have applied personality traits to different fields; however, to the best of authors’ knowledge, few studies have applied this concept to service-related subjects, and only the influence of employees’ personality traits on service providers has been discussed.
Developing an indicator framework for measuring sustainable logistics innovation in retail
Authors: Andersson Petra , Forslund Helena 
Published: February 2018

PurposeThe purpose of this paper is to develop an indicator framework for measuring sustainable logistics innovation (SLI) in retail.
Design/methodology/approachA literature review in different theory areas was conducted to generate a literature-based SLI indictor framework. The literature-based framework was then compared to five-year sustainability reports of three Swedish retailers to identify SLI indicators and how to measure them. This comparison led to a developed framework.
FindingsThe developed framework combines sustainability dimensions with logistics activities. It identifies SLI indicators and how to measure them. Significant gaps between the framework and sustainability reports prompted the creation of an agenda for future research. Items that further research should consider include broadening or deepening the framework, developing specifically social SLI indicators for all logistics activities and developing measurement scales for the SLI indicators.
Research limitations/implicationsThe study presents an SLI indicator framework as an initial contribution towards knowledge creation, and following the agenda for further research could generate even more implications for research.
Practical implicationsManagers need inspiration concerning which indicators to use to measure SLI and how.
Social implicationsThe study addresses both environmental and social sustainability, as well as suggests SLI indicators.
Originality/valueNo identified study has merged sustainable logistics innovation and performance measurement in retail.
A history of ship specialization and consequences for marine invasions, management and policy
Authors: Davidson Ian C. , Scianni Christopher , Minton Mark S. , Ruiz Gregory M. 
Published: February 2018

Abstract

Propagule pressure plays a key role in the successful establishment of introduced species. Explaining invasion patterns, predicting future invasions and reducing invasion rates are priority areas of research and management, especially in marine systems, which need more detailed correlates and invasion predictors.

The commercial maritime shipping fleet is the most prolific long distance anthropogenic transfer mechanism (vector) of marine non‐indigenous species on a global scale, causing invasions of coasts by a wide diversity of organisms. Although most vessel arrivals provide an opportunity for organism introductions, there are often substantial differences among ship types—in both their “morphological traits” (structural design) and “behavioural ecology” (cargo delivery model and operational tempo)—that influence propagule delivery by ballast water and biofouling, the two dominant sources or sub‐vectors for ship‐mediated species transfers.

We reviewed ship specialization and its implications for marine invasion and vector management. First, we identified factors that affect ship‐mediated propagule delivery characteristics (number, identity, diversity and quality/condition), classifying these as ship type independent or dependent factors. Second, we compared the relevance of these factors for both ballast water and biofouling. Third, we estimated and compared the magnitude of several key factors affecting propagule delivery among seven major ship types.

Typical voyage speed varies by 74% and port residence time varies sixfold among ship types. Similarly, typical ballast water discharge varies by an order of magnitude among ship types. These and other ship type dependent factors affect propagule delivery characteristics, resulting in uneven magnitude of species transfer among ship types.

Policy implications. Variation among commercial ship types is rarely integrated into analyses of marine bioinvasions and proxy measures of propagule delivery. Their inclusion may lead to more robust explanation, prediction and management of marine invasions. Risk analyses that account for differences among ship types and prevailing traffic directionality will likely offer greater insight than null models, which treat ships equally. Furthermore, ballast treatment technologies and hull husbandry may advance to reduce species transfers more effectively when tailored for different ship types, recognizing the variation and operational constraints (that affect propagule delivery) among the diverse range of ship types.
When mutualisms matter: Rhizobia effects on plant communities depend on host plant population and soil nitrogen availability
Authors: Keller Kane R. , Lau Jennifer A. 
Published: February 2018

Abstract

Mutualistic interactions, such as the relationship between legumes and rhizobia, can affect community properties, yet there needs to be greater understanding of when these interactions may be most important to communities. Resource mutualism theory provides predictions based on variation in abiotic and biotic factors. First, there is substantial intraspecific genetic variation in how legumes interact with rhizobia, including variation in legume growth response to rhizobia, number of rhizobia‐housing nodules and nitrogen fixation. Rhizobia likely have greater community impacts when associating with hosts that benefit greatly from rhizobia, produce many nodules and fix a lot of nitrogen. Second, increased soil nutrient availability typically reduces the partner benefits of legume–rhizobium interactions. As a result, the legume–rhizobium resource mutualism may have greater effects on communities in low‐nitrogen environments.

We first conducted a common garden study of the annual legume Chamaecrista fasciculata to explore intraspecific variation in focal traits related to competition and mutualistic interactions with rhizobia. Then, we manipulated the presence of rhizobia, nitrogen fertilization and population identity of C. fasciculata in mesocosms simulating native plant communities. We measured plant diversity, assessed changes in community composition and measured soil nutrient availability.

We detected significant genetically based intraspecific variation in growth and mutualism‐related traits across C. fasciculata populations. From the experimental mesocosms, we found that although rhizobia consistently reduced diversity, rhizobia most strongly reduced diversity when associating with C. fasciculata populations that were highly dependent on rhizobia and when nitrogen was most limiting. We also detected greater variation among populations in their effects on communities in the absence of rhizobia; the presence of rhizobia dramatically minimized effects of population identity on the surrounding community.

Synthesis. These findings show that abiotic environmental factors and intraspecific variation in a dominant host plant can influence the magnitude of mutualism effects on communities and, reciprocally, how the presence of key mutualists can influence the importance of genetically based variation among populations to community outcomes. While prior studies have detected both strong and weak effects of mutualism on plant communities, our study illustrates that mutualism theory may predict when strong mutualism effects are most likely to occur and also shows how theories developed for particular species interactions may make studies investigating the ecological impacts of genetic variation a more predictive science.
Drought‐adapted plants dramatically downregulate dinitrogen fixation: Evidences from Mediterranean legume shrubs
Authors: Dovrat Guy , Masci Tania , Bakhshian Hila , Mayzlish Gati Einav , Golan Sivan , Sheffer Efrat 
Published: February 2018

Abstract

The importance of symbiotic dinitrogen (N2) fixation in shaping the coupled nitrogen–carbon cycle is now known for most humid terrestrial ecosystems. However, whether N2 fixation can play a key role in the nitrogen and carbon budget of water‐limited and seasonally dry ecosystems remains a mystery.

The maintenance of metabolically and physiologically costly symbiotic fixation in water‐limited environments is highly complex. These costs are particularly high during the first developmental season, when allocation to deep rooting and drought resistance mechanisms is essential for seedling survival of prolonged seasonal drought.

We, therefore, evaluated how drought‐adapted legume species change their allocation to symbiotic nitrogen fixation as a function of soil nitrogen availability. We tested this on seedlings of a suite of four common Mediterranean legume shrubs with a strong seasonal behaviour, which we grew under controlled nitrogen and phosphorus availabilities. We asked: (1) Do species differ in their investment and regulation of nitrogen fixation? (2) Is fixation regulated via plant allocation to nodules, fixation rate or both? and (3) Does phosphorus availability limit symbiotic nitrogen fixation?

All Mediterranean perennial legumes in the experiment established and grew, nodulated, and fixed nitrogen, even under severe nitrogen limitation. The four species reacted similarly to nitrogen supply, by strongly downregulating fixation through both decreased nodulation and lower rate of fixation. However, we found a significant interspecific difference in fixation (both nodulation and rate), biomass production and growth rate. Our experimental species presented a range of fixation investment strategies corresponding to life‐history and resource partitioning patterns. Phosphorus limitation had a minor influence on both fixation and plant growth.

Synthesis. The high physiological cost of symbiotic fixation imposes the need to tightly regulate fixation in perennial legumes coping with severe water stress. Control of fixation allows legume species to colonize recently disturbed nitrogen‐deficient habitats, cope with grazing, survive long seasonal droughts and recover nitrogen fixation later in the wet season, and survive over time by reducing nitrogen inputs to the ecosystem.