bluuebunny/crossref_metadata_2025_split huggingface dataset:
Availability of interventional-radiological revascularization procedures in Germany – an analysis of the DeGIR Registry Data 2018/19
Authors: Mahnken Andreas H. , Nadjiri Jonathan , Schachtner Balthasar , Bücker Arno , Heuser Lothar J. , Morhard Dominik , Landwehr Peter , Hoffmann Ralf-Thorsten , Berlis Ansgar , Katoh Marcus , Reimer Peter , Ingrisch Michael , Paprottka Philipp 
Published: August 2021

Purpose Peripheral artery disease (PAD) is a common condition with high socio-economic relevance. Therefore, qualified nationwide provision of interventional treatments of PAD is important for maintaining a high quality medical service in Germany.
Materials and Methods All data on revascularization procedures from the quality management system of the German interventional radiological society (DeGIR) for the years 2018 and 2019 were retrospectively analysed. Number and distribution of DeGIR certified endovascular specialists and treatment centres was mapped. Documented procedures were broken down to the level of administrative districts. Absolute number of revascularization procedures and normalized number per one million inhabitants were computed.
Results In 2019 there were 57 732 revascularization procedures from 228 participating centres performed by DeGIR certified interventional radiologists. A median of 62 recanalization procedures were documented per centre. 36 centres were considered to be high volume centres, with more than 500 procedures each. On a regional level in the years 2018 and 2019 combined a median (range) of 2324 (323–12 518) revascularization procedures per administrative district were performed by DeGIR certified interventional radiologist.
Conclusion There is a comprehensive nationwide high quality interventional-radiology service for the provision of revascularization procedures available in Germany.
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Assessing Data Adequacy for High Blood Pressure Clinical Decision Support: A Quantitative Analysis
Authors: Dorr David A. , D'Autremont Christopher , Pizzimenti Christie , Weiskopf Nicole , Rope Robert , Kassakian Steven , Richardson Joshua E. , McClure Rob , Eisenberg Floyd 
Published: August 2021

Abstract
Objective This study examines guideline-based high blood pressure (HBP) and hypertension recommendations and evaluates the suitability and adequacy of the data and logic required for a Fast Healthcare Interoperable Resources (FHIR)-based, patient-facing clinical decision support (CDS) HBP application. HBP is a major predictor of adverse health events, including stroke, myocardial infarction, and kidney disease. Multiple guidelines recommend interventions to lower blood pressure, but implementation requires patient-centered approaches, including patient-facing CDS tools.
Methods We defined concept sets needed to measure adherence to 71 recommendations drawn from eight HBP guidelines. We measured data quality for these concepts for two cohorts (HBP screening and HBP diagnosed) from electronic health record (EHR) data, including four use cases (screening, nonpharmacologic interventions, pharmacologic interventions, and adverse events) for CDS.
Results We identified 102,443 people with diagnosed and 58,990 with undiagnosed HBP. We found that 21/35 (60%) of required concept sets were unused or inaccurate, with only 259 (25.3%) of 1,101 codes used. Use cases showed high inclusion (0.9–11.2%), low exclusion (0–0.1%), and missing patient-specific context (up to 65.6%), leading to data in 2/4 use cases being insufficient for accurate alerting.
Discussion Data quality from the EHR required to implement recommendations for HBP is highly inconsistent, reflecting a fragmented health care system and incomplete implementation of standard terminologies and workflows. Although imperfect, data were deemed adequate for two test use cases.
Conclusion Current data quality allows for further development of patient-facing FHIR HBP tools, but extensive validation and testing is required to assure precision and avoid unintended consequences.
Challenges in Managing Massive Neck Pseudoaneurysm
Authors: V. Bharath , Agasty Sumit , Hote Milind Padmakar 
Published: August 2021

AbstractPseudoaneurysms in the neck are challenging surgical cases. They need detailed preoperative evaluation, treatment of etiology, and surgical/interventional management at appropriate time.Here, we describe a case of 45-year-old female who presented to emergency with impending rupture of swelling in the right side of neck. On evaluation, it was found to be a pseudoaneurysm of right common carotid artery (RCCA). She was planned for emergency surgery, but the swelling ruptured before the patient could be taken into the operation room (OR). The challenges faced in managing it are described below.
Pulmonary Arterial Dilatation: Imaging Evaluation Using Multidetector Computed Tomography
Authors: Raju Sreenivasa Narayana , Pandey Niraj Nirmal , Sharma Arun , Malhi Amarinder Singh , Deepti Siddharthan , Kumar Sanjeev 
Published: August 2021

AbstractPulmonary artery dilatation comprises a heterogeneous group of disorders. Early diagnosis is important as the presentation may be incidental, chronic, or acute and life threatening depending upon the etiology. Cross-sectional imaging plays an important role, with CT pulmonary angiography being regarded as the first line investigation in the evaluation of pulmonary artery pathologies. Moreover, effects of pulmonary artery lesions on proximal and distal circulation can also be ascertained with the detection of associated conditions. Special attention should also be given to the left main coronary artery and the trachea-bronchial tree as they may be extrinsically compressed by the dilated pulmonary artery. In context of an appropriate clinical background, CT pulmonary angiography also helps in treatment planning, prognostication, and follow-up of these patients. This review mainly deals with imaging evaluation of the pulmonary arterial dilatations on CT with emphasis on the gamut of etiologies in the adult as well as pediatric populations.
Atypical Intratemporal Meningioma Masquerading as Otitis Media—Clinical and Radiological Diagnostic Dilemma
Authors: Matish Mrinal , Rathi Abhishek , Moon Manasi 
Published: August 2021

AbstractMeningiomas are the most common intracranial extra-axial neoplasms with mostly straightforward radiological diagnosis; however, they can have unusual clinical and imaging manifestations posing diagnostic dilemma for radiologists and clinicians. The objective of this case report is to highlight the infrequent and misleading presentations of meningiomas to make an accurate diagnosis. A 65-year-old male patient presented with complaints of left recurrent otitis media and facial nerve palsy for past 6 months. On imaging, an aggressive predominantly cystic intracranial neoplasm was found in the left temporal fossa extending into the middle and external ear. Histopathological examination of the excised tumor revealed WHO grade I meningothelial meningioma. Meningiomas can show atypical imaging features such as large meningeal cysts, heterogenous or ring enhancement and aggressive features such as bone erosion. They can invade the middle ear and should be thought of while dealing with nonresponsive cases of otitis media.
‘If She’s Pregnant, then that Means that Her Dreams Fade Away’: Exploring Experiences of Adolescent Pregnancy and Motherhood in Rwanda
Authors: Coast Ernestina , Mwali Marie Merci , Isimbi Roberte , Ngabonzima Ernest , Pereznieto Paola , Buzby Serafina , Dutton Rebecca , Baird Sarah 
Published: August 2021

AbstractAdolescent motherhood can alter the future opportunities available to girls and the challenges they face. This article considers how adolescents’ capabilities are influenced by pregnancy and motherhood, using a mixed-methods case study of Rwanda. Adolescent motherhood impacts girls’ lives across multiple capabilities including education, psychosocial well-being, voice and agency, and economic empowerment. Rarely were adolescent mothers in our sample supported to return to school, for instance. Their pregnancy and motherhood were stigmatised by their families, peers, wider community and service providers. The psychosocial consequences of adolescent motherhood are significant, linked to social isolation and multifaceted stressors, including poverty. Despite recent policy and service improvements, adolescent mothers continue to be left behind.
A reactive hydrodynamic simulation of noise propagation for a concrete-confined detonation
Authors: Ji Juntae , Lee Younghun , Yoh Jack J. 
Published: August 2021

When a point source detonation occurs, high temperature and pressure gases are released and then propagate through the open atmosphere as a blast wave. This leads to an explosive sound in the form of environmental noise, which has been known to cause hearing damage to nearby residents surrounding the explosion area. In an effort to reduce such noise levels, explosion test sites are installed with sound barriers to mitigate and minimize the noise associated with the blasts. In this study, realistic explosion pressure was calculated at an initial detonation source inside a concrete sound barrier, and a numerical prediction was made to evaluate the environmental noise propagation in an actual terrain. In particular, we applied the concrete equation of state to the governing conservation equations for a spherical detonation in a confined geometry and compared the experimental data taken within 3 m from the test site and a few kilometers away from the sound source. Moreover, the amount of noise reduction was predicted by first considering the absorbed explosion pressure by the sound barrier, which later dissipated at a far distance at which the noise propagation in an actual terrain was compared with the measurements.
Active topolectrical circuits
Authors: Kotwal Tejas , Moseley Fischer , Stegmaier Alexander , Imhof Stefan , Brand Hauke , Kießling Tobias , Thomale Ronny , Ronellenfitsch Henrik , Dunkel Jörn 
Published: August 2021

Significance
Originally discovered in condensed-matter physics, topological protection has become a unifying paradigm for understanding robust localized wave propagation in electronic, optical, acoustic, and even geophysical systems. The excitation of topologically protected waves in passive matter typically requires external forcing in a specific frequency range. Here, we show both theoretically and experimentally that robust topological edge modes can be spontaneously self-excited in active systems made from internally powered subunits. Presenting different realizations of active nonlinear electronic circuits, we demonstrate the emergence of self-organized topological wave patterns, in close agreement with predictions from a generic mathematical model. More broadly, these results can provide guidance for designing autonomous active systems with topologically protected signaling and transmission properties.
The stability of Cl-, Br-, and I-passivated Si(100)-(2 × 1) in ambient environments for atomically-precise pattern preservation
Authors: Frederick E , Dwyer K J , Wang G T , Misra S , Butera R E 
Published: August 2021

Abstract
Atomic precision advanced manufacturing (APAM) leverages the highly reactive nature of Si dangling bonds relative to H- or Cl-passivated Si to selectively adsorb precursor molecules into lithographically defined areas with sub-nanometer resolution. Due to the high reactivity of dangling bonds, this process is confined to ultra-high vacuum (UHV) environments, which currently limits its commercialization and broad-based appeal. In this work, we explore the use of halogen adatoms to preserve APAM-derived lithographic patterns outside of UHV to enable facile transfer into real-world commercial processes. Specifically, we examine the stability of H-, Cl-, Br-, and I-passivated Si(100) in inert N2 and ambient environments. Characterization with scanning tunneling microscopy and x-ray photoelectron spectroscopy (XPS) confirmed that each of the fully passivated surfaces were resistant to oxidation in 1 atm of N2 for up to 44 h. Varying levels of surface degradation and contamination were observed upon exposure to the laboratory ambient environment. Characterization by ex situ XPS after ambient exposures ranging from 15 min to 8 h indicated the Br– and I–passivated Si surfaces were highly resistant to degradation, while Cl–passivated Si showed signs of oxidation within minutes of ambient exposure. As a proof-of-principle demonstration of pattern preservation, a H–passivated Si sample patterned and passivated with independent Cl, Br, I, and bare Si regions was shown to maintain its integrity in all but the bare Si region post-exposure to an N2 environment. The successful demonstration of the preservation of APAM patterns outside of UHV environments opens new possibilities for transporting atomically-precise devices outside of UHV for integrating with non-UHV processes, such as other chemistries and commercial semiconductor device processes.
Estimation of occupational radiation doses in neuroendovascular procedures
Authors: López-Ángeles D , Gamboa-deBuen I , Martínez-de los Santos C , Alaniz-Sida K , Vega-Montesinos S , Lopez-Rendon X 
Published: August 2021

Abstract
To estimate the mean effective dose per procedure with multiple dosimetry, to calculate the annual effective dose to personnel working in neuroendovascular procedures and compared with methods reported in the literature and with national and international limits. The radiation dose to personnel was monitored in 20 procedures classified as diagnostic or therapeutic. During each procedure, the equivalent dose to eyes, thyroid, under and over the lead apron at chest level, hands, gonads and knees was measured with lithium fluoride thermoluminescent dosimeter chips (TLD-100). Estimations of the annual effective dose from different methods found in literature that use one or two dosimeters and from this work were compared. Also, a comparison was made with the safety limits recommended in national and international regulations. Radiation exposure to eyes, thyroid, gonads and knees is relevant to the effective dose, and therefore to the annual effective dose estimations. Personnel position is important, as the performing physician, who is closer to the patient, received the highest dose measured. In particular, this was observed in the equivalent dose received over the apron. However, the equivalent dose to the right eye was higher for neuroanaesthesiologists than for performing physicians due to their position relative to the patient. In general, effective doses estimated using one- and two-dosimeter methods found in the literature were, respectively, lower and higher than those obtained with the ten-dosimeter method in this work. The annual effective doses to personnel estimated with the multiple dosimetry algorithm ranged from 1.3 to 1.5 mSv y−1 and are within the national and international limits.
Increased dephasing length in heavily doped GaAs
Authors: Duan Juanmei , Wang Changan , Vines Lasse , Rebohle Lars , Helm Manfred , Zeng Yu-Jia , Zhou Shengqiang , Prucnal Slawomir 
Published: August 2021

Abstract
Ion implantation of S and Te followed by sub-second flash lamp annealing with peak temperature about 1100 °C is employed to obtain metallic n
++-GaAs layers. The electron concentration in annealed GaAs is as high as 5 × 1019 cm−3, which is several times higher than the doping level achievable by alternative methods. We found that heavily doped n
++-GaAs exhibits positive magnetoconductance in the temperature range of 3–80 K, which is attributed to the magnetic field suppressed weak localization. By fitting the magnetoconductance results with Hikami–Larkin–Nagaoka model, it is found that the phase coherence length increases with increasing carrier concentration at low temperature and is as large as 540 nm at 3 K. The temperature dependence of the phase coherence length follows l
∅ ∝ T

η
(η ∼ 0.3), indicating defect-related scattering as the dominant dephasing mechanism. In addition, the high doping level in n-type GaAs provides the possibility to use GaAs as a plasmonic material for chemical sensors operating in the infrared range.
Data infrastructure and information design of e-learning in primary school
Authors: Hendriyana H , Sutisna M R 
Published: August 2021

AbstractThe Industrial Revolution 4.0 presents technologies that make it easier for humans to help their daily activities, one of them is exchange of information through the internet. Information accessed using internet makes easy because can be accessed anytime, anywhere, and there are no limited on the device used. The software that is often used to access this information is a browser which is a website-based tool. It can also be used as a learning media by academics and students are called electronic learning or e-learning. Academics and students can easily get the information they need. Information on e-learning creates new sources of wealth. However, large data have problems is information overload that results in information that is related or not related to needs. Therefore, it is necessary to call information according to either the provider or recipient of information in an e-learning container stored in a database based on the information content using the Data Manipulation Language (DML) in the Structure Query Language (SQL). This research boundary to the database design for the development of e-learning for elementary school environments, starting from analysis, designing relationships between data using Entity Relationship Diagrams (ERD), Context Diagrams and Data Flow Diagram (DFD).
Development of electronic teaching materials based Flip Book Makers for language skills in elementary schools
Authors: Wicaksono A , Supriyono S , Akhyar F 
Published: August 2021

Abstract
This study aims to develop electronic teaching materials for Indonesian language skills based Flip Book Makers. The design used is research and development with the following procedures: (1) needs analysis, (2) developing electronic teaching materials based Flip Book Makers, and (3) validating the electronic teaching materials based Flip Book Makers that have been developed. The legibility test results of the teaching materials showed that the readability criteria could be understood with an average score of 86%. From the results of the research conducted, the development of performance-based teaching materials for Indonesian language skills was deemed feasible.
Developing of EDGIV web application to support voluntary teaching program
Authors: Muhammad R , Hendriyana H , Ardimansyah M I , Furnamasari Y F 
Published: August 2021

Abstract
The problem of equitable access to quality education in Indonesia is increase seen during the Covid-19. Mataharikecil, as one of the social foundations, is trying to take apart. But based on our observation, not all volunteers know how to teach the students. It can cause the education quality provided does not meet the qualifications set by the government. The purpose of this research is to provide a digital platform that can help volunteer teachers in the learning process, starting from preparation, implementation, to evaluation of the learning process. The platform developed is a web-based application called EDGIV. EDGIV is built using the Framework for Application of System Thinking (FAST) method with the stages consisting of Scope Definition, Problem Analysis, Requirements Analysis, Logic Design, Decision Analysis, Physical Design and Integration, Construction, and Testing, Installation and Delivery. EDGIV provides learning materials features based on the curriculum set by the government, course tracking, and the administration feature. EDGIV uses web technology so volunteer teachers can access EDGIV from any device, anytime, and anywhere. It is hoped that EDGIV can provide guidance for volunteer teachers in providing standardized teaching and make the learning experience enjoyable for teachers and students.
Correlation between mathematic learning outcomes and self-regulated learning in the covid-19 pandemic situation
Authors: Putri H E , Sasqia A S , Abdulloh A , Fuada S , Muqodas I , Majid N W A 
Published: August 2021

Abstract
The COVID-19 pandemic brought major changes in the education field in Indonesia. The face-to-face learning system that usually dominates the school learning system has changed to an online learning system. The purpose of this study is to reveal how much the correlation between mathematics learning outcomes and students self-regulated learning in elementary schools when online-based learning systems were applied during the COVID-19 pandemic. This research is a quasi-experiment of the fractions topic which applied to 54 students from one of the elementary schools in central Jakarta, Indonesia. Mathematics learning outcomes test and self-regulated learning questionnaires are given before and after online learning is conducted. Online learning is done with a group of the WhatsApp application and learning videos that are broadcasted through the YouTube channel. The results of the study show that the correlation between mathematics learning outcomes and self-regulated learning of elementary school students is 0.424. Based on the criteria from Guilford, the magnitude of the correlation value is in the medium criteria. The results of the study concluded that there is a correlation between mathematics learning outcomes and students self-regulated learning. The higher the student mathematics learning outcomes, the higher the self-regulated student circulation, and vice versa.
Reciprocal teaching approach towards mathematics learning outcome of elementary school teacher education students
Authors: Muanifah M T , Rhosyida N , Trisniawati T , Anggraheni R , Maghfiroh N , Kurniasih A , Sa’diyah H 
Published: August 2021

Abstract
The purpose of this paper is to describe the effectiveness of the reciprocal teaching approach towards mathematics learning outcomes of elementary school teacher education students, the effectiveness of group presentation learning towards mathematics learning outcomes and to compare the effectiveness of reciprocal teaching approaches and group presentation learning in terms of mathematics learning outcomes of towards mathematics learning outcomes of elementary school teacher education students. This type of research is a quasi-experimental quantitative research. This research was conducted at elementary school teacher education program in Universitas Sarjanawiyata Tamansiswa. The subjects of this study were students of the 3rd semester, namely classes 3A and 3C. Data Analysis technique of quantitative used one way anova and independent sample t-test. Based on the results of the research, it can be concluded that mathematics learning using a reciprocal teaching approach was more effective than mathematics learning using group presentations towards mathematics learning outcomes.
Realistic mathematics education approach on teaching geometry in primary schools: Collaborative action research
Authors: Mutaqin E J , Salimi M , Asyari L , Hamdani N A 
Published: August 2021

Abstract
The purpose of this study was to describe the steps of implementing the Realistic Mathematics Education (RME) approach in teaching geometry in elementary schools. This research uses collaborative action research between lecturers, students, and teachers in 2019 at one of the primary schools in Central Java. Data collection techniques through observation, interviews, and tests. The result of the research is that the implementation steps of the RME approach include: (a) Understanding contextual problems. (b) Describing contextual problems, (c) Solving contextual problems, (d) Comparing and discussing answers, and (e) Concluding. The implementation of the RME approach is proven to improve mathematics learning outcomes about geometry.