bluuebunny/crossref_metadata_2025_split huggingface dataset:
Empirically-Derived Synthetic Populations to Mitigate Small Sample Sizes
Authors: Fowler Erin E. , Berglund Anders , Schell Michael J. , Sellers Thomas A. , Eschrich Steven , Heine John 
Published: October 2018

AbstractLimited sample sizes can hinder biomedical research and lead to spurious findings. The objective of this work is to present a new method to generate synthetic populations (SPs) from sparse data samples to aid in modeling developments. Matched case-control data (n=180 pairs) defined the limited samples. Cases and controls were considered as two separate limited samples. Synthetic populations were generated for these observed samples using multivariate unconstrained bandwidth kernel density estimations. We included four continuous variables and one categorical variable for each individual. Bandwidth matrices were determined with Differential Evolution (DE) optimization driven by covariance comparisons. Four synthetic samples (n=180) were constructed from their respective SP for comparison purposes. Similarity between the observed samples with equally sized synthetic-samples was compared under the hypothesis that their sample distributions were the same. Distributions were compared with the maximum mean discrepancy (MMD) test statistic based on a Kernel Two-Sample Test. To evaluate similarity within a modeling context, Principal Component Analysis (PCA) score distributions and residuals were summarized with the distance to the model in X-space (DModX) as additional comparisons.Four SPs were generated with the optimization procedure. The probability of selecting a replicate when randomly constructing synthetic samples with n=180 was infinitesimally small. The MMD tests indicated that the observed sample distributions were similar to the respective synthetic distributions. For both case and control samples, PCA scores and residuals did not deviate significantly when compared with their respective synthetic samples.The reasonableness of this SP generation approach was demonstrated. This approach produced synthetic data at the patient level statistically similar to the observed samples, and thus could be used to generate larger-sized simulated data. The methodology coupled kernel density estimation with DE optimization and deployed novel similarity metrics derived from PCA. The use of large-sized synthetic samples may be a way to overcome sparse datasets. To further develop this approach into a research tool for model building purposes, additional evaluation with increased dimensionality is required; moreover, comparisons with other techniques such as bootstrapping and cross-validation will be required for a complete evaluation.
A new form of Cd3TeO6revealing dimorphism
Authors: Weil Matthias , Veyer Théo 
Published: October 2018

Phase-formation studies in the system CdO–TeO3using a CsCl/NaCl melt at comparatively low temperatures revealed that tricadmium orthotellurate(VI), Cd3TeO6, is dimorphic. The new modification of Cd3TeO6is denoted as the β-form and adopts the rhombohedral Mg3TeO6structure type with one Cd and two O sites in general positions, and two Te sites with site symmetry \overline{3} each. In comparison with the previously reported monoclinic cryolite-type α-form that was prepared at higher temperatures, β-Cd3TeO6has a much lower density and most likely represents a metastable modification. Whereas the [TeO6] octahedra in both polymorphs are very similar and show only minor deviations from ideal values, the polyhedra around the CdIIsites are different, with a distorted [CdO6] octahedron in both modifications but an additional [CdO8] polyhedron with a [4 + 4] coordination in the α-form.
Corrosion behavior of 20# steel in aqueous CO2 solution under stratified gas-liquid two-phase flow condition
Authors: Yang Guirong , Song Wenming , Wang Fuqiang , Ma Ying , Hao Yuan 
Published: October 2018

PurposeThis paper aims to investigate the corrosion rate, surface morphology and composition of corrosion products of 20# seamless steel in aqueous CO2 solution under stratified gas-liquid two-phase flow condition. The development of a corrosion products layer has also been discussed.

Design/methodology/approachThe following methods were used: weight loss method, scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction.

FindingsThe corrosion rate curve presents an irregular zigzag change trend with a gradual increase in time. The peak value of the corrosion rate appears when the corrosion time is 4 h and 8 h. The corrosion products layer is composed of two sub-layers: the inner dense layer that is about 6 µm thick and the outer loose layer that is about 9 µm thick when the corrosion time is 8 h. The main corrosion product are FeCO3 and Fe2O3.

Originality/valueThe atomic ratio of Fe/C/O is relatively stable for the inner dense layer, but changes in thickness for the outer loose layer. There is a densification stage after a loose corrosion products layer forms, and it is periodic.
Analysis of surveillance position error for airfield detection
Authors: Ku SungKwan , Baik Hojong , Kim Taehyoung 
Published: October 2018

Purpose
The surveillance equipment is one of the most important parts for current air traffic control systems. It provides aircraft position and other relevant information including flight parameters. However, the existing surveillance equipment has certain position errors between true and detected positions. Operators must understand and account for the characteristics on magnitude and frequency of the position errors in the surveillance systems because these errors can influence the safety of aircraft operation. This study aims to develop the simulation model for analysis of these surveillance position errors to improve the safety of aircrafts in airports.

Design/methodology/approach
This study investigates the characterization of the position errors observed in airport surface detection equipment of an airport ground surveillance system and proposes a practical method to numerically reproduce the characteristics of the errors.

Findings
The proposed approach represents position errors more accurately than an alternative simple approach. This study also discusses the application of the computational results in a microscopic simulation modeling environment.

Practical implications
The surveillance error is analyzed from the radar trajectory data, and a random generator is configured to implement these data. These data are used in the air transportation simulation through an application programing interface, which can be applied to the aircraft trajectory data in the simulation. Subsequently, additionally built environment data are used in the actual simulation to obtain the results from the simulation engine.

Originality/value
The presented surveillance error analysis and simulation with its implementation plan are expected to be useful for air transportation safety simulations.
Distributed measurement system based on CAN data bus
Authors: Grzybowski Piotr , Klimczuk Maciej , Rzucidlo Pawel 
Published: October 2018

Purpose
This paper aims to describe the idea behind and design of a miniaturized distributed measurement system based on a controller area network (CAN) data bus.

Design/methodology/approach
The intention of the designers was to build a light and modular measurement system which can be used in remotely piloted aircraft systems and ultra-light aircraft during flight tests, as well as normal operation. The structure of this distributed measurement system is based on a CAN data bus. The CAN aerospace standard has been applied to the software as well as the hardware comprising this system. PRP-W2 software designed for PCs is an additional component of the proposed measurement system. This software supports data acquisition from a recorder unit and allows for preliminary data analysis, as well as data conversion and presentation.

Findings
The system, complete with a high-speed data recorder, was successfully installed on board of an MP-02 Czajka aircraft. A research experiment using the system and oriented on airframe high frequency vibration analysis is presented in the final part of this paper.

Research limitations/implications
This measurement system allows analysis of high-frequency vibrations occurring at selected points of the aircraft. A data set is recorded by three-axis accelerometers and gyroscopes at frequencies up to 1 kHz.

Practical implications
The use of a miniature and lightweight modular measurement system will, in many cases, be faster and less expensive than full-scale measurement and data acquisition systems, which often require a lengthy assembly process. The implementation of this class of lightweight flight test systems has many advantages, in particular to the operation of small aircraft. Such solutions are likely to become increasingly common in unmanned aerial vehicles and in other light aircraft in the future.

Originality/value
The adaptation of a distributed measuring system with a high frequency of measurements for purposes of small and miniature aircraft.
Body image dissatisfaction and health-enhancing food choices
Authors: Bimbo Francesco , Bonanno Alessandro , Van Trijp Hans , Viscecchia Rosaria 
Published: October 2018

Purpose
Psychological factors, such as body image dissatisfaction and the negative feelings associated with it may be related to the adoption of unhealthy eating behaviours. Also, body image dissatisfaction may lower the likelihood of engaging in long-term healthy eating habits and in the level of attention paid to the quality of the food consumed. As a result, body image may be related to consumers’ choice to purchase and consume health-enhancing food products. The paper aims to discuss these issues.

Design/methodology/approach
A pilot study of a small sample of Italian yogurt consumers was employed to explore if there is a relationship between respondents’ level of body image dissatisfaction and the number of health-enhancing yogurt choices. The data were collected by means of a virtual-shelf technique and were analysed using a negative binomial regression.

Findings
Results indicate that body image dissatisfaction is inversely related to the number of yogurt packages with health-enhancing features chosen from the virtual shelf. Also, respondents who read the nutrition label and those with more knowledge regarding leading functional yogurt brands, selected a higher number of functional yogurts from the virtual shelf compared, especially among women.

Research limitations/implications
The results indicate that body image dissatisfaction is inversely related to the number of yogurt packages with health-enhancing features chosen from the virtual shelf. Also, respondents who read the nutrition label and those with more knowledge regarding leading health-enhancing yogurt brands selected a higher number of health-enhancing yogurts options from the virtual shelf compared to others, especially among women.

Originality/value
The relationship between body image dissatisfaction and health-enhancing food choices has not been investigated in the consumer science and marketing literature. Additionally, this is one of the few papers that use a virtual shelf as a data-collection method.
Characterization of a novel 10T SRAM cell with improved data stability and delay performance for 20-nm tri-gated FinFET technology
Authors: Limachia Mitesh Jethabhai , Thakker Rajesh A. , Kothari Nikhil J. 
Published: October 2018

PurposeThis paper aims to propose a new ten-transistor (10T) SRAM bit-cell with differential read and write operations. The cell structure has read buffer on each side of the cell to improve read performance and comprises six main body transistors’ connections similar to the commercial 6T SRAM cell to improve write performance. The proposed bit-cell is designed with tri-gated FinFET technology and implemented on a silicon-on-insulator (SOI) substrate. 3D TCAD simulations are performed to characterize the efficacy of the proposed bit-cell. Performance characteristics of the proposed bit-cell are compared with the recently reported 8T bit-cell as well as the commercial 6T cell. The proposed bit-cell achieves 26.50 per cent and 35.10 per cent higher read static noise margin (RSNM) as compared with that of 8T and 6T bit-cells, respectively, at a VDD of 0.9 V. The proposed bit-cell also offers 54.78 per cent and 21.18 per cent smaller read delay compared with 8T SRAM-NEW and 6T bit-cells, respectively. The static power dissipation of the proposed bit-cell is comparable with that of the 6T bit-cell and 24.5 per cent lesser compared with that of the 8T bit- cell. The overall electrical quality of the SRAM circuit with the proposed bit-cell is enhanced up to 1.673 times and 1.22 times as compared with the 8T SRAM-NEW and 6T bit-cells, respectively.

Design/methodology/approachA new 10T SRAM bit-cell with differential read and write operations is proposed. The proposed bit-cell is designed with tri-gated FinFET technology and implemented on an SOI substrate. 3D TCAD simulations are performed to characterize the efficacy of the proposed bit-cell. Performance characteristics of the proposed bit-cell are compared with the recently reported 8T bit-cell as well as the commercial 6T cell.

FindingsThe proposed bit-cell achieves 26.50 per cent and 35.10 per cent higher RSNM as compared with that of the 8T and 6T bit-cells, respectively, at a VDD of 0.9V. The proposed bit-cell also offers 54.78 per cent and 21.18 per cent smaller read delay compared with the 8T SRAM-NEW and 6T bit-cells, respectively. The static power dissipation of the proposed bit-cell is comparable with that of the 6T bit-cell and 24.5 per cent lesser compared with that of the 8T bit-cell.

Originality/valueThe proposed bit-cell is novel compared with existing bit-cells.
A reliable convergent Adomian decomposition method for heat transfer through extended surfaces
Authors: Turkyilmazoglu Mustafa 
Published: October 2018

Purpose
This paper aims to revisite the traditional Adomian decomposition method frequently used for the solution of highly nonlinear extended surface problems in order to understand the heat transfer enhancement phenomenon. It is modified to include a parameter adjusting and controlling the convergence of the resulting Adomian series.

Design/methodology/approach
It is shown that without such a convergence control parameter, some of the published data in the literature concerning the problem are lacking accuracy or the worst is untrustful. With the proposed amendment over the classical Adomian decomposition method, it is easy to gain the range of parameters guaranteeing the convergence of the Adomian series.

Findings
With the presented improvement, the reliable behavior of the fin tip temperature and the fin efficiency of the most interested from practical perspective are easily predicted.

Originality/value
The relevant future studies involving the fin problems covering many physical nonlinear properties must be properly treated as guided in this paper, while the Adomian decomposition method is adopted for the solution procedure.
Influence of partial slip flow and thermal jump on mixed convection from an exponentially stretching surface
Authors: Patil Prabhugouda Mallanagouda , Hadimani Geeta , A. Shashikant , Kulkarni P.S. , Kumar Mukesh 
Published: October 2018

Purpose
This paper aims to provide a detailed study on the influence of slip flow and thermal jump over mixed convection flow along an exponentially stretching surface. Also, impacts of suction/blowing, volumetric heat source/sink and velocity ratio parameter will be studied in this analysis.

Design/methodology/approach
The modeled governing equations for the assumed problem are dimensional nonlinear partial differential equations in nature. To reduce these equations, non-similar transformations are used to get the dimensionless nonlinear partial differential equations. Then, quasi-linearization technique is used to linearize these non-dimensional nonlinear partial differential equations. Finally, an implicit finite difference scheme is used to discretize the resulting equations.

Findings
The physical explanations are provided for the variations of various non-dimensional governing parameters over the velocity and temperature profiles. Also, the effects of these dimensionless parameters on skin friction coefficient and heat transfer rate are scrutinized in a manner which highlights their physical interpretation. The detailed discussion exhibits the fact that the streamwise co-ordinate velocity ratio parameter, partial slip parameter and the thermal jump parameter have significant influence over the flow and thermal fields.

Originality/value
This work has not been reported in the literature to the authors’ best of knowledge.
Ten years of conflict management research 2007-2017
Authors: Caputo Andrea , Marzi Giacomo , Maley Jane , Silic Mario 
Published: October 2018

PurposeThe purpose of this study is to map the intellectual structure of conflict management studies by investigating the key themes, concepts and their relationships for the period 2007-2017. The study updates the previous decade (1997-2006) investigation by Ma et al. (2008) to reflect the increased publication efforts in the field.Design/methodology/approachBibliometric analysis was used to trace the development path of the extant literature. The study included activity indicators such as distribution of articles and most-cited journals; relationship indicators such as co-author analysis and keyword analysis; and the mapping of the theoretical foundations.FindingsThe analysis identified five key themes that help track the direction of conflict management research: negotiation, mediation, trust, conflict management styles and performance.Originality/valueThese themes show a wider diversification of topics in the field than in the past, corroborating previous results about the reputation and maturity of conflict management as an independent scientific field of research. This study will help scholars to improve their understanding of the evolution of conflict management studies and the direction that conflict management research is taking, in particular, identifying available avenues for future research.
An investigation into lean production practice in mining
Authors: Lööw Joel 
Published: October 2018

Purpose
Using a theory of translation of ideas, the purpose of this paper is to investigate how the mining industry has implemented and practices lean production as well as the form of this practice.

Design/methodology/approach
The study reviewed the scientific literature on lean production in the mining industry, as well as in the reported practice of the concept in a mining company. The results were then analyzed using content analysis.

Findings
Lean production has not seen a full implementation in the mining industry. Rather, select practices are focused, though the literature covers several more. The findings suggest that the form and extension of lean production in mining differ from other industries owing to characteristics of the industry itself.

Research limitations/implications
The scientific literature on the subject is limited. Additional material was used to attempt to offset this. However, there are still blind spots relating to practice that is not reported in the type of material investigated.

Originality/value
This paper contributes to understanding the evolution of lean production in a unique industry. It suggests why lean implementation may be unsuccessful in this type of industry while also identifying the focal point of its lean production practice.
Establishing a partnership between top and IT managers
Authors: Manfreda Anton , Indihar Štemberger Mojca 
Published: October 2018

PurposeA poor relationship between top management and IT personnel is often denoted as a business–IT gap. In an era of digital transformation, bridging this gap and establishing a strong relationship between business and IT are more important than ever before. The purpose of this paper is thus to examine a particular link between business and IT managers – a partnership relationship – together with the factors facilitating it.Design/methodology/approachA partnership construct is developed based on interdisciplinary studies and transferred to the business–IT context since it is not generally used in IT disciplines. The model was empirically tested with structural equation modelling using data obtained from 221 IT managers in Slovenian companies.FindingsThe results show that both the perceived value of IT and the business orientation of the IT department exert a positive influence on the partnership, while a mere technology-oriented IT department has a negative effect on the partnership relationship. Furthermore, the paper also presents the prerequisites for a business-oriented IT department.Originality/valueIn this digitalisation era, IT is becoming even more important for its strategic role in organisations. There is thus a strong need to bridge the business–IT gap. Despite significant efforts made to close this gap, it remains a major issue. This research contributes to understanding the business–IT gap and presents the key factors for ensuring a partnership relationship is in place. The study also combines the views of social exchange theory and knowledge-based theory and upgrades findings concerning the influence of social facilitators on collaboration outcomes.
Incentives for Polish higher education institutions to improve real estate efficiency
Authors: Rymarzak Małgorzata 
Published: October 2018

Purpose
The purpose of this paper is to analyse the appropriateness of incentives used by governments for Polish public higher education institutions (HEIs) to be more efficient in real estate and how these incentives can be strengthened.

Design/methodology/approach
A closed-ended questionnaire was sent to all public HEIs in Poland. Of the 132 questionnaires sent, 57 were successfully completed and returned, representing a response rate of 43 per cent.

Findings
Analysis of empirical data demonstrates that when considerable public funds, both national and European, were distributed to extend and upgrade academic infrastructure, Polish HEIs have had no obligation to show how they manage the assets entrusted to them, and the government has not created adequate incentives to encourage efficiency in the use of HEIs real estate. This may have resulted in a significant, yet not always justified, increase in the space at their disposal. In view of a demographic decline, the low level of internalisation of Polish HEIs, the decreasing level of funding from the public purse and the growing operation and maintenance costs of the buildings, an oversupply of space may cause financial distress to some establishments. This may affect the future of the whole system of higher education.

Practical implications
This paper can be a resource for HEI chancellors, financial directors and campus managers, as well as HEI funding and supervisory institutions.

Originality/value
This paper highlights the need to strengthen incentives for public HEIs in Poland to foster their greater efficiency in resource allocation and utilization. Greater transparency in HEI operations and the improvement of the POL-on system may contribute to more efficient use of university assets.