bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contribution of the three-dimensional model to the reliability allocation of multiphase systems
Authors: Saadi Saadia , Djebabra Mébarek , Roudies Ounsa , Boulagouas Wafa 
Published: July 2019

Purpose
The purpose of this paper is to deal with the allocation requirements of the dependability of the multiphase systems.

Design/methodology/approach
It consists of a proposal for a combined methodology based on the simultaneous use of decomposition systems and reliability allocation method.

Findings
In the developed methodology, the authors use the principles of risk assessment and propose a new formulation of weight allowance with reference to the structural‒functional dependence.

Practical implications
The suggested methodology provides invaluable help to implementation process analysis.

Originality/value
The adopted allocation approach is based on the use of a three-dimensional model: temporal, structural and functional decomposition of systems.
Social reports of an Italian provincial government: a longitudinal analysis
Authors: Farneti Federica , Guthrie James , Canetto Marcello 
Published: July 2019

Purpose
This paper aims to examine the non-financial information disclosed in social reports by an Italian provincial government over time to determine its relevance, contribution and evolution.

Design/methodology/approach
Through a case study analysis, the authors examine 10 years of social reports by one “best practice” Italian provincial government. The authors use content analysis to quantify the level of social and environmental disclosures and use a coding instrument based on the GRI guidelines. The authors use legitimacy theory as a framework.

Findings
The level of disclosure increased over the 10-year period, and the type of disclosures became more detailed. However, many of the economic, social and environmental elements set out in the Global Reporting Initiative (GRI) guidelines were not disclosed. Moreover, the social report was contingent on a few key factors. The authors find that there has been a decline in interest in social reports by local governments in Italy, suggesting that voluntary disclosure was perhaps a fad that no longer is of interest in Italian local government.

Research limitations/implications
This research is one case study so the findings are not generalisable. The findings suggest that there is a need for regulation in non-financial information disclosures, as the disclosures in the case study organisation were very much at the discretion of the organisation. This has implications for policymakers.

Originality/value
Unlike prior studies, this study takes a longitudinal approach to voluntary disclosure of non-financial information and focusses on the under-explored context of public sector organisations.
European emission allowance and equity markets: evidence from further trading phases
Authors: Harasheh Murad , Amaduzzi Andrea 
Published: July 2019

Purpose
This paper aims to investigate the value relevance of the European Emission Allowance (EUA) return and volatility on the equity value of the top listed European Power Generation Firms for the three trading phases of the European Emission Trading Scheme.

Design/methodology/approach
The authors use the multifactor financial market model over the period 2005-2016 on daily basis for the return relevance relationship, whereas time series models such as autoregression moving average and generalized autoregressive conditional heteroskedasticity are applied on a weighted average portfolio of the sample firms to test serial correlation and volatility of returns.

Findings
The findings are novel in which a positive and significant relevance of EUA return on equity return is shown; however, a vanishing effect is seen as one moves to further trading phases. Another remarkable finding is that the return relationship remains constant until a certain level in EUA price then inverts. Finally, the authors present that EUA is considered a systematic factor as firm and country-specific features are not statistically significant.

Practical implications
At policy level, these findings signal policymakers for an appropriate design of the future trading phases in which they achieve the balance between public interests, as climate risk mitigation by reducing emissions, and the private interests of the market players to support innovative changes.

Originality/value
To the authors’ knowledge, this study would be the first to offer recent and comprehensive findings on the economic and financial implications of the European Emission Trading Scheme for the three trading phases. Additionally, the research offers time series robustness check besides the standard regression analysis and shows that there is an optimal EUA price that triggers polluters’ decision on emission and generation.
Sources of value co-destruction: Uber customer perspectives
Authors: Sthapit Erose , Björk Peter 
Published: July 2019

Purpose
This study aims to explore the antecedents that generate value co-destruction, the negative outcomes resulting from interactive value formation, in the sharing economy context, particularly taxi services. The focus of the study is on customers’ Uber reviews that are written in English and posted online. Three keywords, “bad”, “terrible” and “awful”, were used to capture online narratives linked to customers’ negative experiences with Uber. Out of the 758 online reviews, 75 negative reviews were analysed in this study.

Design/methodology/approach
A grounded theory approach was used for data analysis.

Findings
Two distinct themes resulted in value co-destruction: Uber drivers’ bad behaviour and poor customer service. The managerial implications include that Uber clearly should invest more resources to minimise the negative experiences of its customers by clearly defining the taxi drivers’ tasks and responsibilities. In addition, when customers report their dissatisfaction, they should be dealt with promptly and effectively through good customer service.

Research limitations/implications
First, the netnography study, by its nature, was restricted to those customers who shared their reviews online. The study did not consider those customers who have not posted their reviews online. Second, the focus of the study was on customer reviews that were written in English. Third, only three keywords (“bad”, “terrible” and “awful”) were used in the data selection process, limiting the number of review posts (75) that were analysed in this study. In addition, even if this study does not produce statistically generalizable findings, the findings are valuable in an analytical sense.

Practical implications
From a managerial perspective, Uber clearly should invest more in resources to minimise the negative experiences of its customers (both domestic customers and tourists) by clearly defining the taxi drivers’ tasks and responsibilities. If the drivers’ tasks are unclear, then customers cannot be served in an effective manner and with consistent service quality. The taxi drivers, regardless of their full-time or part-time work shifts, should ensure that quality services are offered to customers. Providing high-quality service might reduce the number of complaints and result in positive comments and compliments.

Originality/value
This study addresses the gap in previous literature by examining customers’ negative experiences during the overall service encounter and antecedents of value co-destruction in the context of Uber. This study contributes to a better understanding of value co-destruction within the sharing economy.
Modeling and optimization of sand crushing plant using experimental design methodology
Authors: Benyessad Djamel , Arkoub Hamid , Seghir Abdelghani 
Published: July 2019

Purpose
The purpose of this paper is to present results of an experimental program conducted on manufacturing process of crushed sand. The aim of the research is to propose an optimized approach which allows to fix, directly at the process stage, the rate of fines in the produced crushed sand.

Design/methodology/approach
In the first step of the study, samples of crushed sand are collected in situ, at each adjustment of the identified operating parameters. They are then analyzed in laboratory to retrieve especially the fines contents for each adjustment. These adjustments are conducted for all possible combinations of the extremum operating conditions of the parameters. In the second step of the study, the experimental design technique is applied to study the influence of the different factors, and to model the interaction between them. An expression is obtained and subjected to statistical tests, and then it is confronted to other experimental measures.

Findings
Parameters influencing the fines rates are identified and their effects are analyzed. The domain of variation of three predominant parameters is defined allowing to conduct in situ experiments with minimal incidence on the manufacturing disturbance. A mathematical model is proposed to quantify the crushed sand fines by analytical expression that takes into account the interaction between influencing parameters.

Practical implications
The conducted experiments provided new data that will help to enhance and to better set up the settings of the parameters influencing the rate of filler. The proposed expression constitutes a practical tool for the manufacturer to fix the operating parameters values that results in a desired target fines contents.

Originality/value
Modeling and optimization of the sand crushing plant, considered here as a case study, has not been attempted previously. The conducted experiments and the proposed mathematical model constitute an original work of this study.
Federal Decentralization and Adaptive Management of Water Resources: Reservoir Reallocation by the U.S. Army Corps of Engineers
Authors: Doyle Martin W. , Patterson Lauren A. 
Published: July 2019

AbstractReservoir operations must respond to changing conditions, such as climate, water demand, regulations, and sedimentation. The U.S. Army Corps of Engineers (Corps) can reallocate reservoir storage to respond to such changes. We assembled and analyzed a database of reservoir reallocations implemented and proposed by the Corps. While only a small portion of total reservoir storage nationwide has been reallocated, there are substantial differences in reallocation frequency and magnitude across the nation: some Corps Districts and Divisions use reallocation while others do not, relying more on discretion and small‐scale adaptation of operations. This difference illustrates how water resource agencies like the Corps decentralize management decisions to allow responding to disparate conditions. Decentralized decision‐making provides a responsive approach to water management, while centralized and hierarchical decision‐making is a slower, more deliberative approach. Decentralized decision‐making may lead to the accumulation of short‐term, local decisions over time to the point that the system is managed differently than anticipated. Reallocation, which is a form of planned adaptive management, can be accommodating of multiple competing demands and different stakeholders, yet expensive and less temporally responsive. The challenge for any large water resource management agency is to balance between local‐level, responsive discretion vs. centralized, planned decision‐making.
Association between opioid use disorder and fractures: a population‐based study
Authors: Hsu Wen‐Yu , Lin Cheng‐Li , Kao Chia‐Hung 
Published: July 2019

AbstractAimsTo test whether fractures and osteoporosis are more prevalent among patients with opioid use disorder (OUD) than patients without OUD in Taiwan.DesignWe conducted a retrospective cohort study using data from the National Health Insurance Research Database (NHIRD) in Taiwan.SettingTaiwan.ParticipantsThe number of adult patients with OUD and without OUD was 3695 and 14 780, respectively. We established both cohorts from 1 January 1998 to 31 December 2011 to observe the incidence of fracture. The occurrence of fracture was followed‐up until the end of 2011.MeasurementsThe primary measure was incidence of fracture. The relative risk of fracture was estimated using the Cox proportional hazard model after adjusting for age, sex, index year and comorbidities. Comorbidities included diabetes mellitus, hyperlipidemia, stroke, chronic obstructive pulmonary disease, heart failure, alcohol‐related illness, osteoporosis, end‐stage renal disease, obesity and rheumatoid arthritis, using the International Classification of Diseases, 9th revision, clinical modification.FindingsPatients with OUD were 4.13 times more likely to suffer fractures than patients without OUD [incidence rate (IR) per 1000 person‐years = 23.0 versus 5.47, adjusted hazard ratio (HR) = 3.74, 95% confidence interval (CI) = 3.27–4.29]. Compared with the control group, the risk of fracture was higher among the patients with OUD. Risk of fracture was higher in male elderly patients with diabetes mellitus, alcohol‐related illness or osteoporosis. The cumulative incidences of fracture over 14 years of patients with OUD and without OUD differed significantly.ConclusionsTaiwanese patients with opioid use disorder appear to have a higher adjusted hazard ratio for fracture than Taiwanese patients without opioid use disorder.
Characterization of metabolic changes in the phenotypes of women with polycystic ovary syndrome in a large Mediterranean population from Sicily
Authors: Carmina Enrico , Nasrallah Mona P. , Guastella Ettore , Lobo Rogerio A. 
Published: July 2019

AbstractObjectiveTo better characterize the metabolic alterations in various phenotypes of polycystic ovary syndrome (PCOS) in a large homogeneous (Sicilian) Mediterranean population with a low prevalence of obesity.DesignRetrospective study.PatientsA total of 1215 consecutively evaluated women with PCOS divided into four Rotterdam phenotypes (A, B, C and D) and in 108 matched ovulatory, nonhyperandrogenic women.MeasurementsBMI, fasting glucose, total cholesterol, HDL cholesterol, triglycerides, LDL cholesterol and an oral glucose tolerance test.ResultsThe overall prevalence of obesity was 31%, metabolic syndrome 6.6%, diabetes 2.1%, altered glucose metabolism 13.1%, and abnormal lipid profile 60%. Phenotype B had the highest prevalence of obesity, metabolic syndrome, altered glucose metabolism and lipid abnormalities compared to other PCOS phenotypes and controls. Phenotype A was more obese and more women had metabolic syndrome compared to phenotypes C and D but phenotype C had a similar prevalence of altered glucose metabolism and lipid abnormalities compared to phenotype A which had a higher BMI. These metabolic abnormalities in A and C were higher compared to phenotype D and controls. Multivariate analysis showed that BMI predicts only abnormalities in fasting glucose and triglycerides, while there was no association with androgens.ConclusionsIn Mediterranean women with PCOS from Sicily with a lower prevalence of obesity, the prevalence of diabetes, altered glucose metabolism and metabolic syndrome were much lower than reported in US studies. Phenotype B was the most metabolically affected phenotype, followed by phenotype A. Phenotype C had an intermediate disorder but with a high prevalence of altered glucose metabolism and lipid alterations. Only the normoandrogenic phenotype D had no metabolic abnormalities.
Comparison among different presentations of venous thromboembolism because of lung cancer
Authors: Guo Jian , Deng Qin‐Fang , Xiong Wei , Pudasaini Bigyan , Yuan Ping , Liu Jin‐Ming , Zhou Cai‐Cun 
Published: July 2019

AbstractIntroductionVenous thromboembolism (VTE) because of lung cancer has been sufficiently studied, nevertheless, little is known regarding the discrepancy of clinical characteristics and predictive factors among different presentations of VTE because of lung cancer.ObjectivesThis study was designed to investigate the distinction of clinical characteristics and predictive factors among different presentations of VTE because of lung cancer.MethodsAll patients concomitant lung cancer and VTE were stratified into three groups: pulmonary embolism (PE) group in which patients had sole PE, deep vein thrombosis (DVT) group with sole DVT and concomitance group with both PE and DVT.ResultsConcomitance of PE and DVT (28.2 days) mostly occurred at the early stage after the diagnosis of lung cancer, by contrast with DVT (63.6 days) which did at the latest stage, whereas PE (36.7 days) generally developed intermediately in between (P = .02). In a Kaplan‐Meier analysis, the cumulative survival rate of DVT group was higher than that of concomitance group, whereas the rate of PE group lied in between. (P = .002) The strongest correlated factors with the development of DVT, PE and concomitance were adenocarcinoma (HR 3.27, P = .003), chemotherapy (HR 2.62, P = .005) and D‐Dimer (HR 3.88, P < .001), respectively. The strongest correlated factors with the mortality of DVT, PE and concomitance were comorbidity (HR 2.32, P = .003), metastasis (HR 3.12, P < .001), and metastasis (HR 4.29, P < .001), respectively.ConclusionConcomitance of DVT and PE represents the severest state of lung cancer, the earliest occurrence of VTE, and the worst survival rate, whereas DVT stands for the mildest condition of lung cancer and stablest pattern of VTE.
Neurath onVerstehen
Authors: Uebel Thomas 
Published: July 2019

AbstractThis paper argues for a broadened understanding of the social scientific thought of a leading logical empiricist and advocate of the unity of science. Often portrayed as a reductive physicalist on account of his temperamental interventions againstgeisteswissenschaftlicheobscurantists in the time of the Weimar Republic, Otto Neurath in fact was a defender and practitioner of interpretive methods who warned against their abuse inside and outside of academic social science and history. After placing Neurath's efforts in the context of the Vienna Circle, his talk of “social behaviorism” and his criticisms of Max Weber are clarified (both represent prominent stumbling blocks for an appreciation of Neurath's views) and his view on the role of empathetic understanding is reconstructed. Further support for this interpretation is then adduced from various instance of his pre‐Vienna Circle work (incl. his critique of Spengler and his own work in economic history and history of ideas). Having been trained in the Historical School, Neurath never abandoned his hermeneutic insights but sought to integrate them in a non‐dichotomous conception of science.
Marine recreational fishing and the implications of climate change
Authors: Townhill Bryony L. , Radford Zachary , Pecl Gretta , van Putten Ingrid , Pinnegar John K. , Hyder Kieran 
Published: July 2019

AbstractMarine recreational fishing is popular globally and benefits coastal economies and people's well‐being. For some species, it represents a large component of fish landings. Climate change is anticipated to affect recreational fishing in many ways, creating opportunities and challenges. Rising temperatures or changes in storms and waves are expected to impact the availability of fish to recreational fishers, through changes in recruitment, growth and survival. Shifts in distribution are also expected, affecting the location that target species can be caught. Climate change also threatens the safety of fishing. Opportunities may be reduced owing to rougher conditions, and costs may be incurred if gear is lost or damaged in bad weather. However, not all effects are expected to be negative. Where weather conditions change favourably, participation rates could increase, and desirable species may become available in new areas. Drawing on examples from the UK and Australia, we synthesize existing knowledge to develop a conceptual model of climate‐driven factors that could impact marine recreational fisheries, in terms of operations, participation and motivation. We uncover the complex pathways of drivers that underpin the recreational sector. Climate changes may have global implications on the behaviour of recreational fishers and on catches and local economies.
Fracture propagation using the radial point interpolation method
Authors: Ramalho Luís D.C. , Belinha Jorge , Campilho Raul D.S.G. 
Published: July 2019

AbstractThis work presents a crack path prediction algorithm combined with the radial point interpolation method (RPIM), a meshless method. To allow easier implementation in existing structural analysis software, this algorithm is numerically compatible with finite element method (FEM) formulations. The proposed RPIM formulation uses the triangular elements of a FEM mesh as the background integration grid, allowing also to combine both formulations more easily. Thus, with the developed methodology, the RPIM can be integrated directly in a FEM software or use the same CAD tools to build the discretization meshes. Because the RPIM shape functions possess the delta Kronecker property, all the numerical techniques available for the FEM can be applied to enforce the natural and essential boundary conditions.The developed algorithm uses the maximum tangential stress criterion to determine the crack propagation direction, and the crack paths obtained with it corresponded well to previous research.
Study of the influence of notch radii and temperature on the probability of failure: A methodology to perform a combined assessment
Authors: Muñiz‐Calvente Miguel , Álvarez‐Vázquez Adrián , Cicero Sergio , Correia José A.F.O. , de Jesus Abilio M.P. , Blasón Sergio , Fernández‐Canteli Alfonso , Berto Filippo 
Published: July 2019

AbstractThe fracture assessment of notched components based on cracked components approaches leads to over‐conservative failure predictions. In the research literature, several approaches are proposed to overcome this problem using an apparent fracture toughness,
. Nevertheless, most of these approaches are based on deterministic assumptions despite the large and variable scatter exhibited by
for different notch radii (ρ) or temperatures (T). This paper proposes a methodology for deriving a probabilistic
field including the effect of temperature on the failure of notched components. First, the theory of critical distances is applied to transform each apparent fracture toughness into the equivalent fracture toughness for ρ = 0. Then, the temperature is supposed to act as a scale effect in the Weibull cumulative distribution function of the equivalent fracture toughness, and the corresponding scale effect function is derived. Finally, the applicability of the proposed methodology is illustrated by an example using two ferritic‐pearlitic steels: S275JR and S355J2.
Do additive manufactured parts deserve better?
Authors: Yates John R. , Efthymiadis Panos , Antonysamy Alphons A. , Pinna Christophe , Tong Jie 
Published: July 2019

AbstractAdditive manufacturing of metallic components is regarded as one of the more exciting developments in engineering. The combined attractions of near net shape, tailored composition, and geometry optimisation have led to much interest in the various processes used and a drive to improve the mechanical properties to match those of wrought parts.In this paper, we reflect on the apparent lack of ambition in optimising the structural integrity of parts made using these new manufacturing processes. The current research focus seems to be either on largely irrelevant static properties, or on quantifying the fatigue response in a way that would be familiar to engineers in the 19th Century.Given the work on the role of microstructure and fatigue, which dates back to Ewing and Humphrey in 1903 reaching its zenith in the 1980s and 90s with Keith Miller in the vanguard, and recent developments in both imaging technologies and sophisticated numerical modelling, all the elements are in place for a much more rigorous, and ultimately more fruitful, approach to understand the structural integrity of additive manufactured components.