bluuebunny/crossref_metadata_2025_split huggingface dataset:
Theoretical and experimental dynamics analysis of rotor-bearing system supported by elliptical bearings
Authors: Zhao Zhiming , Zhang Rui , Ji Feng , Yuan Xiaoyang 
Published: September 2020

Purpose
High power and speed are new demands for rotating machinery which needs the journal bearings with high dynamic characteristics. The critical speed of the rotor-bearing system is one of the most significant parameters to evaluate the dynamic characteristics. This paper aims to investigate the theoretical and experimental analysis of a rotor system supported by large diameter elliptical bearings.

Design/methodology/approach
To obtain the theoretical and experimental support for rotor-bearing system design, dynamic characteristics theoretical analysis based on the finite difference method is given and an experiment focuses on critical speed identification is carried out.

Findings
The theoretical calculation results indicate that the critical speed is near to 800 rpm and there is no large vibration amplitude round working speed (1,500 rpm). Using the test bench in the factory unit, vibration data including three experimental processes are obtained. According to the vibration data, the critical speed is identified which also indicates that it is stable when working at 1,500 rpm.

Originality/value
The design method for the rotor system supported by large diameter elliptical bearing can be obtained by the theoretical and experimental results shown in this paper.

Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0122/
How do international advertisers use consumer culture positioning strategies? A cross-national, cross-category approach
Authors: Michaelidou Nina , Micevski Milena , Halkias Georgios 
Published: September 2020

PurposeThe present paper explores how advertisers use consumer culture positioning (CCP) strategies in advertising across countries and product categories.Design/methodology/approachThe study employs a content analysis approach to investigate usage of CCP strategies and symbols across different CCP strategies, countries and product categories. The authors focussed on country of origin (COO) cues as symbols of CCP. The authors collected printed advertisements from countries at different levels of economic development and communication orientation for the content analysis, namely, Austria (n = 182), Hungary (n = 199) and Turkey (n = 120) and products with high- vs low-involvement levels.FindingsFindings of this study indicated that global consumer culture positioning (GCCP) and local consumer culture positioning (LCCP) advertisements relied more on implicit symbols, while foreign consumer culture positioning (FCCP) advertisements predominantly employed explicit ones. Types of symbols and their utilisation varied across countries and product categories, with language, tag lines/logos and brand names being key components across different advertisements.Practical implicationsThe results document the practices of CCP-based advertising, offering important insights on whether and how symbolism can be effectively used for communicating different CCPs across markets.Originality/valueLittle is known in terms of how specific symbols are used to communicate consumers’ culture. In this study, the authors analysed the content of 501 real-print advertisements across multiple countries and product categories. This study contributes to the theory and practice by revealing how consumers’ culture manifests through diverse COO symbols in advertising imagery and by facilitating the application of such manifestations across market contexts.
Dialogical turn of accounting and accountability integrated reporting in non-profit and public-sector organisations
Authors: Pärl Ülle , Paemurru Elina , Paemurru Kristjan , Kivisoo Helen 
Published: September 2020

PurposeThis paper analyses the extent to which public sector (PS) and non-profit (NP) organisations' reports and reporting processes adopt an IR framework as model of dialogical accountings and accountability (DAA) for dialogue with stakeholders.Design/methodology/approachThe paper provides an overview of accountings and accountability in PS and NP organisations. The concept of dialogical communication with stakeholders is studied. The theoretical framework of DAA is supported by empirical investigation through the case studies of two organisations, one PS and one NP organisation. To contextualize findings from the case study, Estonian private schools' published management reports were analysed to explore integrated reporting (IR) elements. The paper ends with discussion and conclusions.FindingsNP and PS aimed to improve their reporting practices. Reporting in the PS organisation were based on traditional accounting and accountability models which work in stable and non-competitive environment. IR, as a format for DAA, could bring added value to the PSO, but the mechanisms to make it work are missing. The NP organisations were already spontaneously practising some IR elements. After learning about IR, the NP organisation committed to IR principles and benefited from its guidelines. Implementing IR together with the concepts of dialogical communication, the organisations could create and benefit from better cooperation with their stakeholders both internally and externally.Research limitations/implicationsThe case study research does not allow for generalisation of the results, which are limited to the case organisations' context and based on their management's subjective opinions. The limitation of qualitative content analysis as a research method in current study, is its possible subjectivity. The limitation is represented by the fact that only one year's data was for analysis.Practical implicationsThis paper can be useful to any PS or NP institution willing to enhance its public accountability and developing dialogue with stakeholders for creation and innovation. This study serves to inform organisations that are searching for ways to improve awareness of IR for communication and co-creation purposes.Social implicationsThis study could help in defining the framework for a larger scale IR-related study in finding trends in PS and NP organisations. The study is a platform for exploring the aspects of developing dialogue with different stakeholders of IR implementation and application process.Originality/valueThe conceptual novelty of the research lies in connecting IRF and dialogical communication concept. The focus is to understand how IR expedites dialogical communication in light of IR framework. In current paper, we observe the presence of IR elements in public sector and non-profit sector organisations' reports.
Developmental outcome of extremely preterm infants is improved after less invasive surfactant application: Developmental outcome after LISA
Authors: Mehler Katrin , Broer Alexander , Roll Claudia , Göpel Wolfgang , Wieg Christian , Jahn Peter , Teig Norbert , Höhn Thomas , Welzing Lars , Vochem Matthias , Hoppenz Marc , Bührer Christoph , Franklin Jeremy , Roth Bernhard , Herting Egbert , Kribs Angela 
Published: September 2020

AbstractAimThe aim of this study was to evaluate neurocognitive outcome at 24 months of corrected age after less invasive surfactant application (LISA) in preterm infants born at 23‐26 weeks of gestational age.MethodsSurviving participants of a LISA trial conducted in 13 German level III neonatal intensive care units were reviewed for assessment of developmental outcome, hearing and vision problems, growth and rehospitalisation days. Maternal depression, breastfeeding rates and socio‐economic factors were evaluated as potentially confounding factors.ResultsIn total, 156/182 infants took part in the study, 78 had received surfactant via LISA and 78 via endotracheal intubation. 22% of LISA infants compared to 42% of intubated infants had a psychomotor development index (PDI) <70 (0.012). A significant difference in mental development index (MDI) was observed in the stratum of more mature infants (25 and 26 weeks of GA). For this group, MDI < 70 was observed in 4% of LISA infants vs 21% of intubated infants (P = 0.008).ConclusionAt 24 months of age, the LISA‐treated infants scored less often PDI < 70 and had similar results in MDI. Infants born at 25 and 26 weeks treated with LISA had lower rates of severe disability. LISA is safe and may be superior.
Lower cardiorenal risk with sodium‐glucose cotransporter‐2 inhibitors versus dipeptidyl peptidase‐4 inhibitors in patients with type 2 diabetes without cardiovascular and renal diseases: A large multinational observational study
Authors: Birkeland Kåre I. , Bodegard Johan , Banerjee Amitava , Kim Dae Jung , Norhammar Anna , Eriksson Jan W. , Thuresson Marcus , Okami Suguru , Ha Kyoung Hwa , Kossack Nils , Mamza Jil Billy , Zhang Ruiqi , Yajima Toshitaka , Komuro Issei , Kadowaki Takashi 
Published: September 2020

AbstractAimsWe compared the new use of sodium‐glucose cotransporter‐2 inhibitor (SGLT2i) versus dipeptidyl peptidase‐4 inhibitor (DPP4i) and the risk of cardiorenal disease, heart failure (HF) or chronic kidney disease (CKD), in patients with type 2 diabetes without a history of prevalent cardiovascular and renal disease, defined as cardiovascular and renal disease (CVRD) free, managed in routine clinical practice.Materials and methodsIn this observational cohort study, patients were identified from electronic health records from England, Germany, Japan, Norway, South Korea and Sweden, during 2012‐2018. In total, 1 006 577 CVRD‐free new users of SGLT2i or DPP4i were propensity score matched 1:1. Unadjusted Cox regression was used to estimate hazard ratios (HRs) for outcomes: cardiorenal disease, HF, CKD, stroke, myocardial infarction (MI), cardiovascular and all‐cause mortality.ResultsBaseline characteristics were well balanced between the treatment groups (n = 105 130 in each group) with total follow‐up of 187 955 patient years. Patients had a mean age of 56 years, 43% were women and they were indexed between 2013 and 2018. The most commonly used agents were dapagliflozin (91.7% of exposure time) and sitagliptin/linagliptin (55.0%), in the SGLT2i and DPP4i, groups, respectively. SGLT2i was associated with lower risk of cardiorenal disease, HF, CKD, all‐cause and cardiovascular mortality; HR (95% confidence interval), 0.56 (0.42‐0.74), 0.71 (0.59‐0.86), 0.44 (0.28‐0.69), 0.67 (0.59‐0.77), and 0.61 (0.44‐0.85), respectively. No differences were observed for stroke [0.87 (0.69‐1.09)] and MI [0.94 (0.80‐1.11)].ConclusionIn this multinational observational study, SGLT2i was associated with a lower risk of HF and CKD versus DPP4i in patients with type 2 diabetes otherwise free from both cardiovascular and renal disease.
Enteropeptidase inhibition improves kidney function in a rat model of diabetic kidney disease
Authors: Sugama Jun , Katayama Yuko , Moritoh Yusuke , Watanabe Masanori 
Published: September 2020

AbstractAimTo examine the effects of an enteropeptidase inhibitor, SCO‐792, on kidney function in rats.Materials and MethodsThe pharmacological effects of SCO‐792 were evaluated in Wistar fatty (WF) rats, a rat model of diabetic kidney disease (DKD).ResultsOral administration of SCO‐792 increased faecal protein content and improved glycaemic control in WF rats. SCO‐792 elicited a rapid decrease in urine albumin‐to‐creatinine ratio (UACR). SCO‐792 also normalized glomerular hyperfiltration and decreased fibrosis, inflammation and tubular injury markers in the kidneys. However, pioglitazone‐induced glycaemic improvement had no effect on kidney variables. Dietary supplementation of amino acids (AAs), which bypass the action of enteropeptidase inhibition, mitigated the effect of SCO‐792 on UACR reduction, suggesting a pivotal role for enteropeptidase. Furthermore, autophagy activity in the glomerulus, which is impaired in DKD, was elevated in SCO‐792‐treated rats. Finally, a therapeutically additive effect on UACR reduction was observed with a combination of SCO‐792 with irbesartan, an angiotensin II receptor blocker.ConclusionsThis study is the first to demonstrate that enteropeptidase inhibition is effective in improving disease conditions in DKD. SCO‐792‐induced therapeutic efficacy is likely to be independent of glycaemic control and mediated by the regulation of AAs and autophagy. Taken together with a combination effect of irbesartan, SCO‐792 may be a novel therapeutic option for patients with DKD.
Early combination therapy delayed treatment escalation in newly diagnosed young‐onset type 2 diabetes: A subanalysis of the VERIFY study
Authors: Chan Juliana C. N. , Paldánius Päivi M. , Mathieu Chantal , Stumvoll Michael , Matthews David R. , Del Prato Stefano 
Published: September 2020

AbstractWe analysed glycaemic durability (sustained glycaemic control) with early combination therapy (metformin plus vildagliptin) versus metformin monotherapy, among patients with type 2 diabetes diagnosed before (young‐onset [YOD]) and after (late‐onset [LOD]) the age of 40 years, enrolled in the VERIFY trial. The primary endpoint was time to initial treatment failure (TF), defined as HbA1c of 7.0% or higher at two consecutive scheduled visits after randomization. The time to secondary TF was assessed when both groups were receiving and failing on the combination. A total of 186 (9.3%) patients had YOD and 1815 (90.7%) had LOD with a mean age difference of 20.4 years. Compared with metformin monotherapy, early combination reduced the risk of time to initial TF for both YOD (48%, P < .0006) and LOD (46%, P < .0001). With early combination, risk for time to secondary TF was reduced by 48% (P < .0035) in YOD and 24% (P < .0009) in LOD. Both treatment approaches were well tolerated with no unexpected safety concerns. In treatment‐naïve patients with YOD (HbA1c 6.5%‐7.5%), an early combination strategy improved attainment of the glycaemic target with durability and delayed treatment escalation compared with initial metformin monotherapy.
Trends in mortality from stroke in the European Union, 1996–2015
Authors: Soto Á. , Guillén‐Grima F. , Morales G. , Muñoz S. , Aguinaga‐Ontoso I. 
Published: September 2020

AbstractBackground and purposeStroke is the second largest single cause of death in Europe, responsible for 9% and 13% of all deaths in men and women, respectively. There have been large overall declines in stroke mortality rates in the majority of European countries in recent decades. The aim of this study was to analyse trends in mortality caused by stroke in the 28 member countries of the European Union (EU) over the last two decades.MethodsWe extracted data for age‐standardized stroke mortality rates per 100 000 in the EU for the period 1996–2015 from the World Health Organization database. Joinpoint regression analysis was used to analyse the trends and compute the annual percent change (APC) in the EU as a whole and by country. Analyses were conducted by gender and by European region.ResultsMortality from stroke has decreased in the EU over the study period by an average APC of 4.2%. All countries showed downward trends, with the sharpest decreases in Estonia, Portugal and Austria. We recorded statistically significant decreases of 4.2% and 4.3% in mortality rates in men and women, respectively, in the whole EU. Southern and western countries showed the steepest decreases, whereas mortality has increased in northern countries in recent years.ConclusionsStroke mortality has decreased in the EU, in both sexes, especially in southern and western European countries. Our results could be a reference for the development of primary prevention and acute management of stroke policies focused on countries with higher mortality.
Application of Mobile Robots to Linear Control Theory Education
Authors: Yamakawa Satoko 
Published: September 2020

Abstract
The knowledge of control engineering for mechanical engineers seems to become more important with the continuous development of automated technologies. To cultivate this knowledge, many experimental devices have been proposed and used. Devices with direct current (DC) motors are widely used because the DC motors can be controlled with sufficient accuracy based on the classical linear control theory. Mobile robots are used as educational platforms attracting the attention of students in various problem-based learning subjects. However, they have been hardly used to teach linear control theory because of the nonlinearity. This paper shows an experimental curriculum to learn control theory using a mobile robot instead of a motor. Although the model of the mobile robot is nonlinear, a strict linearization method makes it possible to adjust the control gains using the linear control theory. By applying the method, the characteristics of linear control systems are explicitly observed in the traveling paths of the mobile robot, so an experimental curriculum to learn the basic linear control theory can be realized using an inexpensive mobile robot. The proposed experimental curriculum was carried out in a class of a mechanical engineering course, and its results are discussed in this paper.
The Synthesis of Carbon Nanofiber Derived From Pineapple Leaf Fibers as a Carbon Electrode for Supercapacitor Application
Authors: Taer E. , Agustino A. , Awitdrus A. , Farma R. , Taslim R. 
Published: September 2020

AbstractThis study aims to synthesize carbon nanofiber as supercapacitor electrodes from pineapple leaf fibers using two steps. The first step involved varying the raw materials termed (i) pineapple leaves, (ii) pineapple leaf fibers, and (iii) the combination of both. The best electrochemical properties in the first step were used as raw material for the second step with varied KOH concentrations at 0.5 M, 0.7 M, and 0.9 M. Furthermore, the optimum specific capacitance based on cyclic voltammetry method for both steps were 175 F g−1 and 191 F g−1, respectively. For the second step, the physical properties, including density, surface morphology, elemental content, N2 gas adsorption–desorption isotherm, and crystalline structure, were analyzed. The result showed the density of the pineapple leaf fiber activated carbon (PALF-AC) electrode steadily declined from 27.93 to 51.72% after carbonization-activation. The optimum specific surface area is as high as 945 m2 g−1 for the PALF-AC0.9 electrode. In addition, the nanofiber diameter on surface morphology based on scanning electron microscopic (SEM) analysis in the range of 35–185 nm. Therefore, a carbon nanofiber–based electrode from pineapple leaf fibers (PALF) shows promising capacitive properties and great potential for use on energy storage devices.
Surface Texturing of Prosthetic Hip Implant Bearing Surfaces: A Review
Authors: Allen Quentin , Raeymaekers Bart 
Published: September 2020

Abstract
More than 300,000 total hip replacement surgeries are performed in the United States each year to treat degenerative joint diseases that cause pain and disability. The statistical survivorship of these implants declines significantly after 15–25 years of use because wear debris causes inflammation, osteolysis, and mechanical instability of the implant. This limited longevity has unacceptable consequences, such as revision surgery to replace a worn implant, or surgery postponement, which leaves the patient in pain. Innovations such as highly cross-linked polyethylene and new materials and coatings for the femoral head have reduced wear significantly, but longevity remains an imminent problem. Another method to reduce wear is to add a patterned microtexture composed of micro-sized texture features to the smooth bearing surfaces. We critically review the literature on textured orthopedic biomaterial surfaces in the context of prosthetic hip implants. We discuss the different functions of texture features by highlighting experimental and simulated results documented by research groups active in this area. We also discuss and compare different manufacturing techniques to create texture features on orthopedic biomaterial surfaces and emphasize the key difficulties that must be overcome to produce textured prosthetic hip implants.
Numerical and Experimental Investigation of Nanoscale Heat Transfer Between a Flying Head Over a Rotating Disk
Authors: Sakhalkar Siddhesh V. , Cheng Qilong , Bogy David B. 
Published: September 2020

Abstract
With the minimum fly height less than 10 nm in contemporary hard-disk drives, understanding nanoscale heat transfer at the head-disk interface (HDI) is crucial for developing reliable head and media designs. While flying at near-contact, the fly height and spacing dependent nanoscale heat transfer are significantly affected by interfacial forces in the HDI (such as adhesion force, contact force etc.). Moreover, with the emergence of technologies such as Heat-Assisted Magnetic Recording and Microwave-Assisted Magnetic Recording, head failure due to overheating has become an increasing concern. In this study, we present a numerical model to simulate the head temperature profile and the head-disk spacing for a flying head over a spinning disk and compare our results with touchdown experiments performed with a magnetic recording head flying over a rotating Al-Mg disk. In order to accurately predict the fly height and heat transfer at near-contact, we incorporate asperity based adhesion and contact models, air & phonon conduction heat transfer, friction heating and the effect of disk temperature rise in our model. Our results show that the incorporation of adhesion force between the head and the disk causes a reduction in the fly height, leading to a smaller touchdown power than the simulation without adhesion force.
A CAD-Free Random Bin Picking System for Fast Changeover on Multiple Objects
Authors: Lee Chun-Tse , Tsai Cheng-Han , Chang Jen-Yuan (James) 
Published: September 2020

Abstract
Random bin picking (RBP) has been a popular research topic due to the demand of industry 4.0, techniques like object detection, picking strategies and robot motion planning are more and more important. Much of the existing research uses the CAD model of the workpiece as the database. However, building CAD models is time-consuming and not all objects have CAD models. In this paper, a CAD-free random bin picking system is proposed to pick miscellaneous objects. By using Mask-RCNN instance segmentation, the object’s category and pickable area can be determined within a 2D image captured from RGB-D camera. Then, the pixels of pickable area can be converted into point clouds for picking tasks with the depth data of RGB-D camera. Compared with traditional RBP systems, a system with the Mask-RCNN doesn’t need to create CAD models, and it only requires fewer images of stacked objects (less than 50) and heuristic picking points labelling as the training data. Thus, the RBP systems which proposed in this paper can lowers the barriers to introduce the random bin picking system into factories. Through this scheme, a fast changeover for different objects could be made within 10 hours. The experiment results show that this system could pick two different objects with high success rate and acceptable cycle time. This system provides a useful and efficient solution for the industrial automation implementations that require bin picking.