bluuebunny/crossref_metadata_2025_split huggingface dataset:
Novel Use of a Social-Media-Based Survey to Detect Regional Differences in Management of Monochorionic–Diamniotic Twins
Authors: Pluym Ilina D. , Paek Bettina , Walker Martin , Liu Hui , Kwan Lorna , Rao Rashmi , Scibetta Emily , Afshar Yalda , Holliman Kerry , Wong Thalia , Platt Lawrence D. , Han Christina S. 
Published: January 2020

Abstract
Objective This study aims to evaluate the utility of social media to distribute a patient survey on differences in management and outcomes of monochorionic–diamniotic (MCDA) pregnancies.
Study Design A cross-sectional survey was posted to an English-language MCDA twins patient-centered support group within the social media site, Facebook from April 2, 2018 to June 26, 2018. Subjects were recruited through a technique called “snowballing,” whereby individuals shared the survey to assist with recruiting. Patient reported data were analyzed using Chi-square and Kruskal–Wallis's tests to explore characteristics associated with surveillance and outcomes as related to region and provider type.
Results Over 3 months, the post “reached” 14,288 Facebook users, among which 5,653 (40%) clicked on the post. A total of 2,357 respondents with MCDA pregnancies completed the survey. Total 1,928 (82%) were from the United States (US) and 419 (18%) from other countries. Total 85% of patients had co-management with maternal–fetal medicine (MFM), more in the US compared with the rest of the world (87 vs. 74%, p < 0.01). MFM involvement led to increased adherence to biweekly ultrasounds (91 vs. 65%, p < 0.01), diagnosis of monochorionicity by 12 weeks (74 vs. 69%, p < 0.01) and better education about twin–twin transfusion syndrome (90 vs. 66%, p < 0.01). Pregnancies with MFM involvement had a higher take-home baby rate for both babies (92 vs. 89%, p < 0.01) or for at least one baby (98 vs. 93%, p < 0.01) compared with those without MFM involvement.
Conclusion A survey distributed via social media can be effective in evaluating real-life management and outcomes of an uncommon obstetrical diagnosis. This survey elucidates wide international variation in adherence to guidelines, management, and outcomes.
Non-Aspergillus Hyaline Molds: Emerging Causes of Sino-Pulmonary Fungal Infections and Other Invasive Mycoses
Authors: Jacobs Samantha E. , Wengenack Nancy L. , Walsh Thomas J. 
Published: January 2020

AbstractHyaline molds, widely distributed in nature, are an important and increasing cause of invasive fungal infections in humans, likely due to an expanding population of immunosuppressed hosts, increases in antifungal resistance, and improvements in laboratory diagnostics. Sinopulmonary disease and disseminated infection are common manifestations in neutropenic patients and transplant recipients, whereas, catheter-related and localized soft tissue infections predominate in immunocompetent hosts. These organisms are not reliably differentiated based on their morphology in tissue; rather, efforts should be made to establish a microbiologic diagnosis via culture or molecular-based methods to guide antifungal management and inform prognosis. Herein, we review the epidemiology, clinical manifestations, diagnosis, and management of these opportunistic pathogens known to cause hyalohyphomycoses: Scedosporium spp., Lomentospora prolificans, Fusarium spp., Scopulariopsis spp., Arthrographis kalrae, Trichoderma spp., Acremonium spp., Paecilomyces variotii, Purpureocillium lilacinum, and Penicillium species.
Robotic-Assisted versus Manual Unicompartmental Knee Arthroplasty: Contemporary Systematic Review and Meta-analysis of Early Functional Outcomes
Authors: Gaudiani Michael A. , Samuel Linsen T. , Kamath Atul F. , Courtney P. Maxwell , Lee Gwo-Chin 
Published: January 2020

AbstractRobotic-assisted unicompartmental knee arthroplasty (RA-UKA) aims to improve accuracy of component placement. Studies have shown improvement in radiographic positioning/alignment with RA-UKA but have not addressed clinical outcome measures (COMs). The purpose of this study was to determine if RA-UKA is associated with improved early revision rates and functional outcome scores (FOS) compared with manual UKA. A systematic review of all English language articles from 1999 to 2019 on RA-UKA using Medline, EMBASE, Scopus, and Web of Science databases identified 277 studies. Seven (three randomized controlled trials) met inclusion criteria. Revision rates/FOS were aggregated for RA-UKA and manual UKA; a forest plot was constructed utilizing inverse variance/Mantel–Haenszel fixed-effects meta-analysis. The seven articles included a total of 363 RA-UKA patients and 425 manual UKA patients. Mean age was 66 ± 3.5 and 65 ± 4.0 years, and mean body mass index (BMI) was 26.8 ± 2.1 and 27.1 ± 1.5 kg/m2, respectively. Mean follow-up was 25.5 months (4.5–48) and 29.1 months (4.5–48) for RA-UKA and manual UKA, respectively. At latest follow-up, RA-UKA patients showed a 26% ± 12 improvement in COMs versus 24% ± 12 improvement for manual UKA patients (p = 0.6). The revision rate was 3% for both groups (p = 0.8); however, a meta-analysis of RCTs showed no difference. Robotic and manual UKAs offer comparable improvements in pain, FOS, and revision rates. The effects of follow-up duration, ceiling effects of COMs, and surgeon experience remain unknown. Future studies comparing robotic versus manual UKAs with longer term follow-up may inform further benefits of each, with respect to component durability, alignment, and functional improvement.
Oral Anticoagulation in the Elderly and Frail
Authors: Bauersachs Rupert M. , Herold Joerg 
Published: January 2020

AbstractThe proportion of elderly patients will increase substantially over the next decades, and both atrial fibrillation (AF) and venous thromboembolism (VTE) are more common in the elderly. Age is a risk factor not only for stroke and thromboembolism but also for bleeding, particularly in frail patients, in whom numerous pathophysiological changes occur that alter drug kinetics and toxicity of standard doses of oral anticoagulants (OACs). AF trials showed that the relative benefits of direct OACs (DOACs) also applied to elderly patients, and due to their higher risk this translates into a higher absolute risk reduction compared with vitamin K antagonists, suggesting that DOACs are the better choice. All DOACs—at varying extent—are eliminated via the kidney and it is crucial to evaluate renal function at initiation and during follow-up, especially for dabigatran. The fear of falls is a common reason against OAC. However, there is still a benefit with OAC, particularly with DOACs given the lower risk of intracranial hemorrhage. Polypharmacy represents a common challenge, nevertheless DOACs and warfarin were classified as beneficial. Nonetheless, attempts should be undertaken to reduce comedication, and drug–drug interactions should be assessed. Coadministration of platelet inhibitors increases bleeding risk and should be avoided. In conclusion, elderly and frail patients requiring anticoagulation for AF or VTE are at higher risk of adverse outcomes, but also have a higher absolute benefit from OAC. Important practical aspects to improve efficacy and safety in this challenging population are summarized in this overview.
Daily protein and energy intakes of infants fed a commercial infant formula with a reduced protein concentration of 2.2 g/100 kcal: an impact of feeding interval on energy intake
Authors: Jinno Shinji , Yamazaki Kae , Nakamura Yoshitaka , Kinouchi Toshi 
Published: January 2020

ABSTRACT
We evaluated the protein and energy intakes of infants fed commercial infant Formula A (protein, 2.2 g/100 kcal; energy, 68 kcal/100 mL) and examined whether changes in feeding intervals are involved in constant energy intake. Daily nutritional intake of 378 Formula A-fed infants was assessed using reference values and compared to that of infants fed Formulas B (protein: 2.3 g/100 kcal, energy: 68 kcal/100 mL) and C (protein: 2.4 g/100kcal, energy: 70 kcal/100 mL). From 15 to 149 days of age, the mean formula volume and protein intake were 758–887 mL/day and 11.4–13.3 g/day, respectively, higher than the protein intake of breast-fed infants. Daily energy intake (86–129 kcal/kg/day) was comparable to the estimated energy requirements. Feeding intervals were shorter in infants fed Formulas A and B than in those fed Formula C, whereas energy intake was similar. The protein intake of infants decreased as the protein concentration per energy in infant formula was reduced, and accordingly the protein intake of Formula A-fed infants was significantly lower than that of Formula C-fed infants. In conclusion, the new composition of Formula A is suitable in protein and energy intake of infants, and daily energy intake remains constant by shortening in feeding intervals when the energy concentration in infant formula is reduced.
Clinical Trial Registration: UMIN000023110
A manifestly covariant framework for causal set dynamics
Authors: Dowker Fay , Imambaccus Nazireen , Owens Amelia , Sorkin Rafael , Zalel Stav 
Published: January 2020

Abstract
We propose a manifestly covariant framework for causal set dynamics. The framework is based on a structure, dubbed covtree, which is a partial order on certain sets of finite, unlabeled causal sets. We show that every infinite path in covtree corresponds to at least one infinite, unlabeled causal set. We show that transition probabilities for a classical random walk on covtree induce a classical measure on the

-algebra generated by the stem sets.
Rotational UV-lithography using flexible chromium-coated polymer masks for the fabrication of microstructured dental implant surfaces: a proof of concept
Authors: Doll P W , Doll C , Käßer L , Häfner M , Spindler B , Ahrens R , Nahles S , Heiland M , Guber A E 
Published: January 2020

Abstract
The purpose of this work was to demonstrate the technical feasibility for the fabrication of microgrooves or micropits on dental implants or dental implant abutment surfaces using a novel fabrication method derived from common UV-lithographic microfabrication. Instead of using a flat and rigid chromium/glass mask to structure a photoresist layer on a small cylindrical part, a flexible chromium-coated polymer mask was introduced into the lithographic setup. Through an elastic deformation of the polymer mask, it was possible to achieve lateral resolutions as small as 1.5 µm on small cylinders and to structure conical parts. By subsequent controlled under-etching of the structured photoresist layer, microgrooves of different cross-sectional geometries can be generated and applied to the implant or implant abutment surface. Such structures can be used for contact guidance of human gingival fibroblasts or endothelia cells to enhance the wound healing process and the overall soft-tissue integration.
Managing erroneous measurements of dynamic brain electrical impedance tomography after reconnection of faulty electrodes
Authors: Li Haoting , Liu Xuechao , Xu Canhua , Yang Bin , Fu Danchen , Dong Xiuzhen , Fu Feng 
Published: January 2020

Abstract

Objective: Electrode detachment may occur during dynamic brain electrical impedance tomography (EIT) measurements. After the faulty electrodes have been reset, EIT can restore to steady monitoring but the corrupted data, which will challenge interpretation of the results, are notoriously difficult to recover. Approach: Here, a piecewise processing method (PPM) is introduced to manage the erroneous EIT data after reattachment of faulty electrodes. In the PPM, we define the three phases before, during and after reconnection of the faulty electrode as PI, PII and PIII, respectively. Using this definition, an empirical mode decomposition-based interpolation method is introduced to compensate the corrupted data in PII, using the valid measurements in PI and PIII. Then, the compensated data in PII are spliced at the end of PI. Thus, there will be a surge at the junction of PII and PIII due to the changes in contact state of the repositioned electrodes. Finally, to ensure all the EIT data are obtained under constant electrode settings, we calculate the above changes and eliminate them from the data after PII. To verify the performance of the PPM, experiments based on head models, with anatomical structures and with human subjects were conducted. Metrics including permutation entropy (PE) and image correlation (IC) were proposed to measure the stability of the signal and the quality of the reconstructed EIT images, respectively. Main results: The results demonstrated that the PE of the processed data was reduced to 0.25 and the IC improved to 0.78. Significance: Without iterative calculations the PPM could efficiently manage the erroneous EIT data after reattachment of the faulty electrodes.
A validated physical model of the thermoelectric drift of Pt-Rh thermocouples above 1200 °C
Authors: Pearce Jonathan V 
Published: January 2020

AbstractPt and Rh oxide vapour transport is thought to dominate the thermoelectric drift of Pt-Rh thermocouples above about 1200 °C. A simple model is presented which relates the electromotive force (emf) drift rate of Pt-Rh thermoelements to the vapour pressure of Pt and Rh oxides. The model assumes that the evaporation of these oxides gives rise to a continuously changing concentration of Pt and Rh, at different rates along the length of the wires, which causes a change in the Seebeck coefficient. The model has been tested by comparison with high precision measurements of the thermoelectric drift of a Pt-Rh thermocouple assembly consisting of five thermoelements, repeatedly exposed to the melting of a Co-C high temperature fixed point (1324 °C) for a total duration of 500 h. By considering various thermocouples of different compositions, it is demonstrated that the calculated drift rate is proportional to the measured drift rate, which represents a validation of the model.
A Wearable Flexible antenna integrated on a Smart Watch for 5G Applications
Authors: Ahmed M I , Ahmed M F 
Published: January 2020

Abstract
This paper presents a design of dual-band flexible wearable antenna for modern 5G applications to integrate on a smartwatch. This antenna is a rectangular antenna which the patch and the ground etched on new flexible material is called “ULTRALAM® 3850HT”. This material is characterized by thin flexible cores with low and stable dielectric constant, which is a key requirement for high frequency and wearable designs. The dielectric constant εr is equal to 3.14, and loss tangent tanδ is equal 0.005 of the ULTRALAM® 3850HT flexible material. The presented antenna is designed to operate at 38 GHz and 60 GHz. The SAR (specific absorption ratio) is also introduced and SAR results will be shown. The presented antenna with and without the smartwatch are simulated using HFSS and CST 2018.
Circularly Polarized Planar Antenna Array Using Linear Polarized Microstrip Antenna with Beamforming for SAR Applications
Authors: Abo El-Hassan M , Hussein K F A , Awadalla K H 
Published: January 2020

Abstract
Circular polarization is so important for satellite and SAR applications. Therefore, a relatively large planar array of 10 × 10 building blocks is proposed to get a high gain and to have the possibility of beamforming for such applications. The individual antenna element used in this array is a linear U-slotted microstrip patch. This allows for simplicity, lightweight and low cost. At first, a subarray of these microstrip antennas is constructed and analyzed to become a building block for the large array. This subarray is formed of four U-slotted microstrip antenna elements arranged in a cross form with 90° sequential rotation in orientation in space, and 90° sequential phase shift between adjacent microstrip elements. The distance between the centers of two opposite microstrip elements is selected to be 0.53λ0. A linear array is formed of ten of these subarrays and analyzed to become one row or one column in the final planar array. The distance between subarray centers is kept to be 0.53λ0, which implies a new arrangement technique using the superposition of elements of the adjacent subarrays. The phase and amplitude relations of this linear array are developed for beamforming using the particle swarm optimization algorithm. Finally, the planar array is formed and simulated. It also implies using the superposition theorem to get the final array form. This planar array has proved to produce a cosecant-squared radiation pattern in the φ = 0° plane normal to the array plane, and a flat-topped pattern in the other perpendicular plane of φ = 90°. This type of array is very suitable for SAR side looking applications.
Design and Implementation of different unit cell elements for reflect arrays
Authors: Fathy Abo Sree Mohamed , Aly Ibrahim Muhammad , Allam A.M.M 
Published: January 2020

Abstract
This paper presents the design and analysis of a unit cell reflect array element using different shapes of radiating elements. A circular split ring and a compliment split ring using different sizes of patches and substrates are proposed. Moreover, a square patch with a varying length stubs is introduced. Each unit cell design is set to operate in the millimetre frequency band to support the 5G standards. In order to conduct those studies, commercially available computer models of CST Microwave studio is used. The scattering properties of the unit cell elements are investigated using Floquet technique based on assumption that the unit cell element is made of infinite periodic structure. For each resonant element, the return loss and the reflection phase graphs are being analysed to obtain the optimum reflection of power and to cover 360 degrees phase shift.
Staging of clear cell renal cell carcinoma using random forest and support vector machine
Authors: Talaat D , Zada F , Kadry R 
Published: January 2020

Abstract
Kidney cancer is one of the deadliest types of cancer affecting the human body. It’s regarded as the seventh most common type of cancer affecting men and the ninth affecting women. Early diagnosis of kidney cancer can improve the survival rates for many patients. Clear cell renal cell carcinoma (ccRCC) accounts for 90% of renal cancers. Although the exact cause of the kidney cancer is still unknown, early diagnosis can help patients get the proper treatment at the proper time. In this paper, a novel semi-automated model is proposed for early detection and staging of clear cell renal cell carcinoma. The proposed model consists of three phases: segmentation, feature extraction, and classification. The first phase is image segmentation phase where images were masked to segment the kidney lobes. Then the masked images were fed into watershed algorithm to extract tumor from the kidney. The second phase is feature extraction phase where gray level co-occurrence matrix (GLCM) method was integrated with normal statistical method to extract the feature vectors from the segmented images. The last phase is the classification phase where the resulted feature vectors were introduced to random forest (RF) and support vector machine (SVM) classifiers. Experiments have been carried out to validate the effectiveness of the proposed model using TCGA-KRIC dataset which contains 228 CT scans of ccRCC patients where 150 scans were used for learning and 78 for validation. The proposed model showed an outstanding improvement of 15.12% for accuracy from the previous work.
Dual-Band Circularly Polarized Mobile Antenna for Millimeter-Wave Antenna Applications
Authors: Alnemr F I , Ahmed M F , Shaalan A A 
Published: January 2020

Abstract
In this paper, a dual-band circularly polarized truncated corner microstrip antenna is simulated and fabricated to operate over millimeter wave frequencies for modern mobile applications. The propose antenna is designed as monolayer circularly polarized patch antenna fed by single-fed strip-line that has been taken to provide better resonating frequency. Further, this antenna has a high gain to resist the losses in millimeter band. Also, the truncated corners and the L-shaped slots in the proposed antenna have a big effect of the antenna performance. This proposed antenna is simulated by CST 2016. Also, the experimental results are measured by R&S®ZVA67 VNA (Vector Network Analyzer). Finally, the measured and simulated results are more closed to each other.
Image Segmentation and Verification Based on Machine Learning for Vision Inspection of Chicken Slaughtering
Authors: Yusof R , Arfa R , Yunus M R M , Muhammad N A A N , Rosli N R , Ismail N 
Published: January 2020

Abstract
According to the Islamic Law, one of the procedures in halal slaughtering of chicken is the step of severing the trachea, esophagus and both the carotid arteries and jugular veins to accelerate the chicken’s bleeding and death. Syariah Compliance Automated Chicken Processing System (SYCUT) uses the Vision Inspection Technology to detect and classify whether a chicken is halal or not. The lack of quality and halal assurance in chicken processing industry made it a need to produce such technology. The system implements image processing techniques and artificial intelligence approach, particularly the Viola and Jones object detection framework for esophagus detection. The results of the experiment from two different sites are 81.8% and 55% respectively. The detection module shows a result of 95.6% and 93.5% also from two different sites which are accuracy as good as a human personnel.
Performance Assessment for Energy Efficient NOMA over Nakagami Fading Channel
Authors: Al-Masry Ahmed , ElBadawy Hesham , Ibrahim Fawzy 
Published: January 2020

Abstract
Nowadays, the Non-Orthogonal Multiple Access (NOMA) has become the most candidate as the multiple access technique for the Fifth Generation (5G). Although, the massive increase in traffic usage is necessary, but it must not come on the account of Energy Efficiency (EE). Therefore, Green Radio (GR) which one of its main points is energy efficiency (EE) gained a lot of attention in last few years in both academic and industrial fields. In this paper, the Energy-Efficiency in the NOMA downlink system under the effect of the Nakagami-m fading channel is studied. Moreover, the Nakagami-m fading channel can tackle several fading cases according to the parameter m. The system has been solved via an iterative algorithm to investigate the required power level for maximum energy efficiency. Different channel models will be investigated such as: one-sided Gaussian faded channel, Rayleigh faded channel, Raician (Nakagami-n) faded channel, and LOS.
Enhanced Ontology Matching for Big Data Integration
Authors: Mahmoud Nesma , Abdlkader Hatem M 
Published: January 2020

Abstract
ontology matching (OM) is a critical process for many disciplines. It aims at identifying the semantic correspondences among different ontologies that are merged for data integration. Unfortunately, OM still faces challenges, especially, in the big data integration (BDI) area. The high degree of semantic heterogeneity problem prevents the integration of relevant data and increased with large-scale ontologies of BDI. The quality of OM still needs more improvements to cope with BDI applications. So, this paper proposes a semantic OM approach called semantic matcher. It achieves the goals of semantic heterogeneity resolving and the quality improvement. It exploits the semantic similarity based on the word embedding model. The word embedding model provides efficient distribution semantic representation of domain words as vectors based on their context. The applicability of the proposed semantic matcher is evaluated through an experiment. The conference and anatomy gold standard datasets are evaluating the experimental results. Accuracy evaluates the quality through the precision, recall, and F-measure measures. Based on the experimental results evaluation, the proposed semantic matcher is promising and efficient in the semantic OM for BDI.