bluuebunny/crossref_metadata_2025_split huggingface dataset:
The use of preanalytical quality indicators: a Turkish preliminary survey study
Authors: Orhan Bagnu , Sonmez Derya , Cubukcu Hikmet Can , Zengi Oguzhan , Ozturk Emre Humeyra , Cinaroglu Ipek , Keles Murat , Gumus Alper , Coskun Cihan 
Published: October 2020

Abstract

Objectives
The utilization of reliable quality indicators (QIs) proven to be suitable for monitoring and improvement tools is one of the best choices to minimize of the risk of errors in all laboratory processes called as total testing process (TTP). In 2008, a Working Group “Laboratory Errors and Patient Safety” (WG-LEPS) established by International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) developed the Model of Quality Indicators (MQI) complying with requirements of the ISO 15189:2012 standard for laboratory accreditation. They have also been dealing with harmonizing the QIs in most laboratories worldwide since then. The present study was set out to investigate the frequency of using IFCC WG-LEPS’ pre-QIs by Turkish laboratories and to assess the conformity of them, by taking into account Turkey’s conditions.

Methods
A survey consisting nine questions was applied in 81 laboratories using SurveyMonkey.

Results
According to the survey results, most of the laboratories reported they have used pre-QIs in the quality standards of health prepared by Turkish Ministry of Health (MOH). A part of IFCC WG-LEPS’ pre-QIs were being utilized by more than 80% of the laboratories, the rest of which only used by 10% of laboratories.

Conclusions
The majority of the medical laboratories have been using the pre-QIs included in the guidelines of Quality Standards prepared by the MOH. The pre-QIs are partially compatible with IFCC WG-LEPS’ pre-QIs. The definitions of IFCC WG-LEPS’ pre-QIs may also be revised to make them more clear and understandable by IFCC WG-LEPS. The insufficiency of Health Information Management Systems (HIMS) limits the use of pre-QIs proposed by IFCC WG-LEPS. Finally, the education of relevant personnel about the use of HIMS and pre-QIs is very crucial to harmonize and to extend the use of IFCC WG-LEPS’ pre-QIs in Turkish medical biochemistry laboratories.
The Academy of the European Federation of Clinical Chemistry and Laboratory Medicine and the European Register of Specialists in Laboratory Medicine: guide to the Academy and the Register, version 4 – 2020
Authors: Wieringa Gijsbert , Jassam Nuthar , Homsak Evgenija , Rako Ivana , Racek Jaroslav 
Published: October 2020

Abstract
The 4th version of the guide to the Register for European Specialists in Laboratory Medicine (EuSpLM) established by the European Communities Confederation of Clinical Chemistry and Laboratory Medicine describes the transfer of the register to the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM) in 2016, the extension in 2018 of the Register beyond the European Union to Europe and the benefits of membership of the EFLM Academy to which the Register transferred on the Academy’s launch in 2019. The Academy offers EuSpLM registrants access to benefits that include reduced registration rates at selected conferences and free subscription to Clinical Chemistry and Laboratory Medicine. With effect from 2020 eligibility was extended to anyone with an interest in laboratory medicine. The updated guide describes the electronically driven processes for individual membership and block enrolment from national societies/organisations, and the stepping stones to recognition as an EuSpLM within the Academy. Whilst eligibility for recognition as an EuSpLM remains largely unchanged new expectations across Europe in education, training, professional regulation and qualifications are reflected in updated criteria. The continuing driver for establishing the Academy and growing the EFLM Register reflects the federation’s leadership role in the harmonisation of high quality education and training for those with an interest in laboratory medicine as well as ongoing initiatives to establish a Common Training Framework for Specialists in Laboratory Medicine under EU Directive 2013/55/EC (The Recognition of Professional Qualifications).
Advances in electrical stimulation-based therapy for tinnitus
Authors: Olze Heidi , Vater Jana , Szczepek Agnieszka J. , Reich Uta , Gräbel Stefan , Uecker Florian Cornelius 
Published: October 2020

Abstract
Tinnitus is a phantom percept of noise heard only by the affected person. The principal problem of persons suffering from tinnitus is the inability to deflect their attention from the phantom sound, resulting in insomnia and problems with concentration, followed by significant health issues. To date, no therapy would relieve patients from the phantom sound. Instead, commonly used therapeutic approaches for tinnitus aim primarily at the reduction of tinnitus-induced distress and are based on various tinnitus habituation methods. Our project aims to quench the tinnitus percept using an implant. To develop such an implant, this research group joined the INTAKT network initiated by the German Federal Ministry of Education and Research and dedicated to the development of smart implants. During this still ongoing, prospective clinical study, the efficacy of two protocols using electrical stimulation is assessed for tinnitus silencing. The electrical stimulation used in the presented study is non-invasive and applied on three consecutive days in the form of short sessions. In a sample of 48 subjects, following three stimulation sessions, 48% of patients reported a significant reduction of tinnitus loudness; 10% reported a brief increase of tinnitus loudness, and 42% stated no change. In one case, the first course of stimulation led to the total distinguishing of tinnitus. On average, the stimulation did not affect the grade of tinnitus-induced distress during the time of measurement. Our current results prompt us to broaden our investigations, expand the subject sample, and further optimize the stimulation conditions.
Wireless retina implant with optical energy supply
Authors: Velten Thomas , Knoll Thorsten , Stracke Frank , Le Harzic Ronan , Jaeger Tino , Rammensee Michael , Kurz Oliver , Klesy Stephan , Januschowski Kai , Sermeus Loic , Szurman Peter , Olsommer Yves , Hoffmann Klaus-Peter 
Published: October 2020

Abstract
We present the first results of work towards a foil-based epiretinal prosthesis that can stimulate retinal cells. The prosthesis receives trigger signals and energy in the form of high intensity infrared radiation. Array-like silicon photodiodes with attached thin film electrodes convert the received infrared light into electrical stimulation signals, which are intended to stimulate ganglion cells. The photodiodes are arranged like stones in a mosaic on an only 10 µm thin and thus flexible polymer foil. Like this, the prosthesis can adapt to the curved shape of the eye and will have close contact with the retina.
The photodiode array is fabricated on silicon wafers. Etched trenches guarantee the electrical separation between the individual photodiodes and pixels. Spectral sensitivities of backside-illuminated photodiodes were measured for wafers thinned to different thicknesses. The thin polymer foil is realized by spin coating polyimide on the photodiode array followed by imidization. Via holes are etched into the polyimide film for contacting the pads of the photodiodes. First spin coating tests were performed using silicon wafers without photodiodes but with metal pads and with etched trenches to simulate the gap between individual photodiodes.
Although the thickness of the spin-coated polyimide layer was very inhomogeneous, we succeeded in realizing vias for connecting contact pads by thin film gold tracks crossing deep trenches. The realized via holes had inclined sidewalls as desired. Electrical measurements showed sufficient electrical contact between two connected pads.
Camera-based climbing analysis for a therapeutic training system
Authors: Richter Julia , Beltrán Raul Beltrán , Heinkel Ulrich 
Published: October 2020

Abstract
In view of therapeutic applications, climbing motion analysis has gained increased importance to avoid movements that are prone to cause injuries and to motivate the climber by means of gamification. To date, there remains need to investigate analysis methods for feedback generation that do not require body contact and that can be easily integrated in the climbing setup. Therefore, this study proposes an camera-based approach for contact-less motion analysis that localises the climber’s centre of mass (COM) and derives relevant parameters, such as fluency, force and distance to the wall, from the temporal COM analysis.
Real-time classification of hand movements as a basis for intuitive control of grasp neuroprostheses
Authors: Amelin Dmitry , Potapov Ivan , Audí Josep Cardona , Kogut Andreas , Rupp Rüdiger , Ruff Roman , Hoffmann Klaus-Peter 
Published: October 2020

Abstract
This paper reports on the evaluation of recurrent and convolutional neural networks as real-time grasp phase classifiers for future control of neuroprostheses for people with high spinal cord injury. A field-programmable gate array has been chosen as an implementation platform due to its form factor and ability to perform parallel computations, which are specific for the selected neural networks. Three different phases of two grasp patterns and the additional open hand pattern were predicted by means of surface Electromyography (EMG) signals (i.e. Seven classes in total). Across seven healthy subjects, CNN (Convolutional Neural Networks) and RNN (Recurrent Neural Networks) had a mean accuracy of 85.23% with a standard deviation of 4.77% and 112 µs per prediction and 83.30% with a standard deviation of 4.36% and 40 µs per prediction, respectively.
The status quo of the visual turn in public relations practice
Authors: Wiesenberg Markus , Verčič Dejan 
Published: October 2020

AbstractWhile most research in public relations and strategic communication concentrates on textual elements, this contribution shifts the focus to the growing importance of visual elements. The theoretical background is based on visual theory and the concept of strategic mediatization. By using a large-scale quantitative survey among 3,387 European communication professionals, this study is the first empirical evidence of communication professionals’ perspectives concerning visual communication. Therefore, the paper empirically demonstrates a visual turn in strategic communication. Although practitioners have been using visual elements since the very beginnings of their trade, only a minority guide these activities through a sound management process. This calls for a deeper consideration of visual communication management in practice and visual public relations research in academia.
Does fake news lead to more engaging effects on social media? Evidence from Romania
Authors: Corbu Nicoleta , Bârgăoanu Alina , Buturoiu Raluca , Ștefăniță Oana 
Published: October 2020

AbstractThis study examines the potential of fake news to produce effects on social media engagement as well as the moderating role of education and government approval. We report on a 2x2x2 online experiment conducted in Romania (N=813), in which we manipulated the level of facticity of a news story, its valence, and intention to deceive. Results show that ideologically driven news with a negative valence (rather than fabricated news or other genres, such as satire and parody) have a greater virality potential. However, neither the level of education nor government approval moderate this effect. Additionally, both positive and negative ideologically driven news stories enhance the probability that people will sign a document to support the government (i. e., potential for political engagement on social media). These latter effects are moderated by government approval: Lower levels of government approval lead to less support for the government on social media, as a consequence of fake news exposure.
Effect of pH on the degradation kinetics of a Mg–0.8Ca alloy for orthopedic implants
Authors: Mohamed Aya , Breitinger Hans-Georg , El-Aziz Ahmed M. 
Published: October 2020

Abstract
One of the promising applications of magnesium and magnesium alloys is their use as biodegradable implants in biomedical applications. The pH around an orthopedic implant greatly affects the degradation kinetics of biodegradable Mg–Ca alloys. At the location of a fracture, local pH changes, and this has to be considered in the optimization of implant materials. In this study, the effect of the pH of a physiological buffer on degradation of a Mg–0.8Ca alloy was studied. The pH of Hank’s balanced salt solution (HBSS) was adjusted to 1.8, 5.3 and 8.1. Degradation of a Mg–0.8Ca implant was tested using immersion test and electrochemical techniques. Immersion tests revealed an initial weight gain for all samples followed by weight loss at extended immersion time. Weight gain was highest at acidic pH (1.8) and lowest at alkaline pH (8.1). This was in agreement with results from electrochemical polarization tests where the degradation rate was highest (7.29 ± 2.2 mm/year) at pH 1.8 and lowest (0.31 ± 0.06 mm/year) in alkaline medium of pH 8.1. The pH of all HBSS buffers except the most acidic (pH 1.8) reached a steady state of ∼pH 10 at the end of the two-month immersion period, independent of the initial pH of the solution. Corrosion products formed on the sample surfaces were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX) and X-ray diffractometry (XRD), revealing the formation of magnesium and calcium phosphates with distinct morphologies that were different for each of the pH conditions. Thus, pH of physiological buffers has a significant effect on the degradation and corrosion of Mg–Ca alloys used for biomedical applications.
Numerical simulation of the effect of baffle cut and baffle spacing on shell side heat exchanger performance using CFD
Authors: Gaikwad Swanand , Parmar Ashish 
Published: October 2020

Abstract
Heat exchangers possess a significant role in energy transmission and energy generation in most industries. In this work, a three-dimensional simulation has been carried out of a shell and tube heat exchanger (STHX) consisting of segmental baffles. The investigation involves using the commercial code of ANSYS CFX, which incorporates the modeling, meshing, and usage of the Finite Element Method to yield numerical results. Much work is available in the literature regarding the effect of baffle cut and baffle spacing as two different entities, but some uncertainty pertains when we discuss the combination of these two parameters. This study aims to find an appropriate mix of baffle cut and baffle spacing for the efficient functioning of a shell and tube heat exchanger. Two parameters are tested: the baffle cuts at 30, 35, 40% of the shell-inside diameter, and the baffle spacing’s to fit 6,8,10 baffles within the heat exchanger. The numerical results showed the role of the studied parameters on the shell side heat transfer coefficient and the pressure drop in the shell and tube heat exchanger. The investigation shows an increase in the shell side heat transfer coefficient of 13.13% when going from 6 to 8 baffle configuration and a 23.10% acclivity for the change of six baffles to 10, for a specific baffle cut. Evidence also shows a rise in the pressure drop with an increase in the baffle spacing from the ranges of 44–46.79%, which can be controlled by managing the baffle cut provided.
Decolorization of Reactive Black B from wastewater by electro-coagulation: optimization using multivariate RSM and ANN
Authors: Gautam Kajal , Verma Rishi K. , Kamsonlian Suantak , Kumar Sushil 
Published: October 2020

Abstract
The present study is aimed to model and optimize the electrocoagulation (EC) process with five important parameters for the decolorization of Reactive Black B (RBB) from simulated wastewater. A multivariate approach, response surface methodology (RSM) together with central composite design (CCD) is used to optimize process parameters such as pH (5–9), electrode gap (0.5–2.5 cm), current density (2.08–10.41 mA/cm2), process time (10–30 min), and initial dye concentration (100–500 mg/l). The predicted percentage decolorization of dye is obtained as 97.21% at optimized conditions: pH (6.8), gapping (1.3 cm), current density (8.32 mA/cm2), time (23 min), and initial dye concentration (200 mg/L), which is very close to experimental percent decolorization (98.41%). The statistical analysis of variance (ANOVA) is performed to evaluate the quadratic model (RSM), and shows good fit of experimental data with coefficient of determination R2 >0.93. An Artificial Neural Network (ANN) is also used to predict the percentage decolorization and gives overall 94.96% which shows performance accuracy between the predicted and actual value of decolorization. The additional considerations of operating cost and current efficiency are also taken care to show the efficacy of EC process with mathematical tool. The sludge characteristics are determined by FE-SEM/EDX.
Predicting Higher Education Grades using Strategies Correcting for Panel Attrition
Authors: Giese Marco 
Published: October 2020

AbstractThis study aims to forecast the final grade of the first higher education degree which can be of considerable interest for higher education institutions to implement early warning systems, students themselves, or potential employers. The analysis is based on the National Education Panel Study (NEPS), a large German dataset covering many aspects of students’ (educational) life. Since panel attrition concerns 35% of participants the Heckman correction and the inverse probability weight (IPW) estimator are used to reduce the estimation bias. A distinction is made between two scenarios, excluding dropout students and including them with a grade of 5.0. Some predictors reveal significant parameter estimates in the first but not in the second scenario, or vice versa, which means that dropout and study performance is not driven by the same variables. To get an early prediction of grades only variables of a pre-university episode were included in the first step. Afterward, variables of the early study phase are included. For the IPW estimator, the R2 improves from 0.202 to 0.593 (dropouts included) when adding the additional variables. The best predictors are the grades at secondary school, grades in the first exams, and the type of institution.
𝑞-Tricomi functions and quantum algebra representations
Authors: Riyasat Mumtaz , Nahid Tabinda , Khan Subuhi 
Published: October 2020

Abstract
The quantum groups nowadays attract a considerable interest of mathematicians and physicists.
The theory of q-special functions has received a group-theoretic interpretation using the techniques of quantum groups and quantum algebras.
This paper focuses on introducing the q-Tricomi functions and 2D q-Tricomi functions through the generating function and series expansion and for the first time establishing a connecting relation between the q-Tricomi and q-Bessel functions.
The behavior of these functions is described through shapes, and the contrast between them is observed using mathematical software.
Further, the problem of framing the q-Tricomi and 2D q-Tricomi functions in the context of the irreducible representation

(
ω
)

{(\omega)}

of the two-dimensional quantum algebra

ℰ
q

⁢

(
2
)

{\mathcal{E}_{q}(2)}

is addressed, and certain relations involving these functions are obtained.
2-Variable 1-parameter q-Tricomi functions and their relationship with the 2-variable 1-parameter q-Bessel functions are also explored.
Water vapour sorption behaviour and physico-mechanical properties of methyl methacrylate (MMA)- and MMA–styrene-modified batai (Paraserianthes falcataria) wood
Authors: Anwar Uyup Mohd Khairun , Sahari Siti Hanim , Jalaludin Zaihan , Husain Hamdan , Lee Seng Hua , Yusoh Alia Syahirah 
Published: October 2020

AbstractThe purpose of this study was to determine the applicability of methyl methacrylate (MMA) and MMA–styrene in treating batai (Paraserianthes falcataria) wood. The effectiveness of the treatment was evaluated based on Fourier transform infrared spectroscopy (FTIR) analysis, physico-mechanical properties of the treated wood, and moisture sorption isotherm using dynamic vapour sorption (DVS) apparatus. Physico-mechanical properties of the modified batai wood were improved. The MMA-treated batai wood showed better improvement in terms of physical and mechanical properties compared to the MMA–styrene-treated batai wood. The equilibrium moisture content (EMC) for untreated batai wood was higher than that of treated samples. At 95% RH, the EMC for untreated batai wood was 20.7%, whereas the EMC for MMA- and MMA–styrene-treated samples was 7.9 and 8.8%, respectively. The findings indicate that the modified batai wood absorbed less moisture compared to the untreated batai wood. Moreover, the untreated batai wood had larger hysteresis loop than the treated batai wood. The highest hysteresis value was observed at 80% RH for untreated batai wood (3.8%), followed by MMA–styrene-treated batai wood (1.7%) and MMA-treated batai wood (1.2%). Both MMA and MMA–styrene proved to be effective treatments for batai wood because they reduced its hygroscopicity.
Enhancement of the physical and mechanical properties of wood using a novel organo-montmorillonite/hyperbranched polyacrylate emulsion
Authors: Xu Jianfeng , Li Xiaoyan , Long Ling , Liu Ru 
Published: October 2020

Abstract
In this work, a novel waterborne hyperbranched polyacrylate (HBPA) dispersed organo-montmorillonite (OMMT) emulsion was synthesized and used for the treatment of wood in a vacuum environment in order to enhance the physical and mechanical properties of the wood. The sapwood of Cathay poplar (Populus cathayana Rehd.) and Radiata pine (Pinus radiata D.Don) were used as the samples for experimentation. The results showed that the physical and mechanical properties of the wood improved significantly due to the successful penetration of the OMMT and HBPA into the wood cell wall. From it was also observed that OMET completely exfoliated from the HBPA matrix and formed a hydrophobic film covering on the inside walls of the cell lumen. Further, it was observed that the poplar sample displayed better mechanical properties than the pine sample because the pine has a more compact structure when compared to poplar and contains rosin. Furthermore, it was also observed that the mechanical properties of the modified wood sample gradually improved with an increase in the concentration of the emulsion. However, excessive concentration (>4 wt%) did not lead to further improvement.