bluuebunny/crossref_metadata_2025_split huggingface dataset:
A new virtue of phantom MRI data: explaining variance in human participant data
Authors: Cheng Christopher P. , Halchenko Yaroslav O. 
Published: September 2020

Background: Magnetic resonance imaging (MRI) is an important yet complex data acquisition technology for studying the brain. MRI signals can be affected by many factors and many sources of variance are often simply attributed to “noise”. Unexplained variance in MRI data hinders the statistical power of MRI studies and affects their reproducibility. We hypothesized that it would be possible to use phantom data as a proxy of scanner characteristics with a simplistic model of seasonal variation to explain some variance in human MRI data. Methods: We used MRI data from human participants collected in several studies, as well as phantom data collected weekly for scanner quality assurance (QA) purposes. From phantom data we identified the variables most likely to explain variance in acquired data and assessed their statistical significance by using them to model signal-to-noise ratio (SNR), a fundamental MRI QA metric. We then included phantom data SNR in the models of morphometric measures obtained from human anatomical MRI data from the same scanner. Results: Phantom SNR and seasonal variation, after multiple comparisons correction, were statistically significant predictors of the volume of gray brain matter. However, a sweep over 16 other brain matter areas and types revealed no statistically significant predictors among phantom SNR or seasonal variables after multiple comparison correction. Conclusions: Seasonal variation and phantom SNR may be important factors to account for in MRI studies. Our results show weak support that seasonal variations are primarily caused by biological human factors instead of scanner performance variation. The phantom QA metric and scanning parameters are useful for more than just QA. Using QA metrics, scanning parameters, and seasonal variation data can help account for some variance in MRI studies, thus making them more powerful and reproducible.
Equity lessons from a large scale private-sector healthcare intervention in Ghana and Kenya: Results for a multi-year qualitative study
Authors: Montagu Dominic , Suchman Lauren , Seefeld Charlotte Avery 
Published: September 2020

Background: The poor fall sick more frequently than the wealthy, and are less likely to seek care when they do. Private provision in many Low- and Middle-Income Countries makes up half or more of all outpatient care, including among poor paitents. Understanding the preferences of poor patients which impel them to choose private providers, and how 3rd party payment influences these preferences, is important for policy makers considering expansion of national health insurance financing to advance Universal Health Coverage. This paper reports on the results of a qualitative evaluation of the African Health Markets for Equity intiative (AHME), a multi-year initiative in Ghana and Kenya to increase options and improve quality for outpatient services, especially for the poor. Methods: Interviews with patients from private clinics were conducted annually between 2013 and 2018. Field staff recruited women for exit interviews as they were leaving these clinics. In the final round of data collection (2018), interviewers screened patients for wealth quintile and selected one third of the sample (approximately 10 patients per country) that fell into the two lowest wealth quintiles (Q1 and Q2). Transcripts were coded using Atlas.ti and coded for analysis using an inductive, thematic approach. Results: We found four primary drivers of patient preferences for private clinics: convenience; efficiency and predictability, perceived higher quality, and empowerment which was derived from greater choice in where to go. Conclusions: Our findings indicate that more options will lead to more opportunities for treatment, and decrease the percentage of those, mostly poor, who become ill and go without care of any kind. This should be considered as a priority by policy makers seeking to make the best use of existing national infrastructure and expertise to assure equal health for all. In this way, private providers offer an opportunity to advance national goals.
WhatsApp as a medium to collect qualitative data among adolescents: lessons learned and considerations for future use
Authors: Singer Barbara , Walsh Caitlin M. , Gondwe Lucky , Reynolds Katie , Lawrence Emily , Kasiya Alinafe 
Published: September 2020

In the field of adolescent sexual and reproductive health (ASRH), candid youth perspectives are necessary for understanding the nuances surrounding contraceptive access and use. Methods of data collection leveraging technological solutions may provide avenues for increased privacy for adolescents. With the use of WhatsApp and other smartphone-based messaging applications as platforms for qualitative methodologies, public health researchers may find increased access to adolescents through utilizing mediums that adolescents already engage with in their daily lives. This article describes the use of WhatsApp as a data collection methodology with adolescents in Malawi. In June 2018, VillageReach used WhatsApp to conduct focus group discussions (FGD) to collect qualitative data on contraceptive use from Malawian youth. WhatsApp FGD participants were male and female adolescents, aged 15-19 representing rural and urban populations across three geographic regions of Malawi (northern, central and southern). Youth researchers (YR), aged 22-25, were trained and facilitated fifteen WhatsApp FGDs, as in-person (12) and remote (3) sessions. WhatsApp FGDs consisted of a YR sharing fictitious but contextually realistic ASRH scenarios, and managing the virtual discussion with questions and probing. Youth indicated comfort using WhatsApp to express their opinions and experiences related to contraceptive use and preferences. Based on the data collected, the researchers felt that use of the technology may increase willingness to provide additional levels of information during anonymized WhatsApp FGDs vis à vis traditional, in-person FGDs. Using WhatsApp as a methodological tool to facilitate FGDs has practical implications for data collection, data quality and data analysis. This paper reports lessons learned as well as the advantages and disadvantages of using WhatsApp to conduct FGDs in a low-resource setting. It also calls for developing guidelines and an ethical code of conduct for the future use of mobile applications for conducting qualitative research with vulnerable populations.
Factors that motivate individuals to volunteer to be dispatched as first responders in the event of a medical emergency: A systematic review protocol
Authors: Heffernan Eithne , Oving Iris , Barry Tomás , Phung Viet-Hai , Siriwardena Aloysius Niroshan , Masterson Siobhán 
Published: September 2020

Background: Voluntary First Response is an important component of prehospital care for medical emergencies, particularly cardiac arrest, in many countries. This intervention entails the mobilisation of volunteers, known as Community First Responders (CFRs), by the Emergency Medical Services to respond to medical emergencies in their locality. They include lay responders and/or professional responders (e.g. police officers, fire fighters, and general practitioners). A wide variety of factors are thought to motivate CFRs to join and remain engaged in Voluntary First Response schemes, such as the availability of learning opportunities, recognition, counselling, and leadership. The aim of this review is to develop an in-depth understanding of CFR motivation, including the factors that influence the initial decision to volunteer as a CFR and the factors that sustain involvement in Voluntary First Response over time. Any factors relevant to CFR de-motivation and turnover will also be examined. Methods: This is a protocol for a qualitative systematic review of the factors that influence the motivation of individuals to participate in Voluntary First Response. A systematic search will be carried out on seven electronic databases. Qualitative studies, mixed-methods studies, and any other studies producing data relating to the review question will be eligible for inclusion. Title and abstract screening, as well as full text screening, will be completed independently by two authors. A narrative synthesis, which is an established qualitative synthesis methodology, will be performed. The quality of each of the included studies will be critically appraised. Discussion: The findings of this review will be used to optimise the intervention of Voluntary First Response. Specifically, the results will inform the design and organisation of Voluntary First Response schemes, including their recruitment, training, and psychological support processes. This could benefit a range of stakeholders, including CFRs, paramedics, emergency physicians, patients, and the public.
The COVID-19 pandemic challenges physical activity with two emerging paradigms
Authors: Matias Thiago Sousa , Dominski Fábio Hech 
Published: September 2020

We are facing an unprecedented crisis due to the COVID-19, with social distancing measures. These measures have adverse impacts and exercise professionals need to gear efforts to promote active lifestyles. This assay has two purposes: 1) To discuss the role of web–based physical activity interventions during and after the COVID-19 pandemic, debating pros and cons, and offering preliminary guidance; 2) To discuss the role of physical activity on mental health, and proposing strategies to exercise interventions. We suggest a more positive outlook to web–based physical activity as internet can expand the scope of exercise as a self-care tool to health enhancement. The use of the internet as a professional tool to support exercise promotion can become a trend. Professional should weigh up the pros and cons when using such approach. After this pandemic we will cherish the psychological well-being benefits of exercise.
Hair follicle stem cells promote cutaneous wound healing through the SDF-1α/CXCR4 axis: an animal model
Authors: Yari Abazar , Heidari Fatemeh , Veijouye Sanaz Joulai , Nobakht Maliheh 
Published: September 2020

Objective: An appropriate source of adult stem cells for therapeutic use is stem cells deriving from the hair follicle bulge. Following injury, ischaemic tissues produce a variety of cytokines and growth factors that are essential for tissue repair. This study sought to investigate the temporal effects of hair follicle bulge stem cells (HFSCs) on cutaneous wound healing in rats using the SDF-1α/CXCR4 axis. Method: HFSCs obtained from rat vibrissa, labeled with DiI and then special markers, were detected using flow cytometry. The animals were divided into five groups: control (non-treated, n=18), sham (PBS, n=18), AMD (treated with AMD3100, n=18), HFSC + AMD (treated with HFSCs + AMD3100, n=18) and HFSC (treated with HFSCs, n=18). A full-thickness excisional wound model was created and DiI-labeled HFSCs were injected around the wound bed. Wound healing was recorded with digital photographs. The animals were sacrificed 3, 7 and 14 days after the surgery and were used for histological (H&E, Masson's trichrome staining) and molecular (ELISA and q-PCR) assays. Results: The flow cytometry results demonstrated that HFSCs were CD34-positive, nestin-positive, but Kr15-negative. The morphological analysis of the HFSC-treated wounds showed accelerated wound closure. The histological analysis of the photomicrographs exhibited more re-epithelialisation and dermal structural regeneration in the HFSC-treated wounds compared with the control group. In the HFSC + AMD group, the histological parameters improved on the same days, but showed a significant decrease compared with the HFSC group in all the days assayed. In the AMD group, there was a significant reduction in the noted parameters. qRT-PCR and ELISA showed a high expression level of SDF-1α, CXCR4 and VEGFR-2 in the HFSC-treated wounded skin tissue, but the expression of CXCR4 and VEGFR-2 showed a significant reduction in the HFSC + AMD group compared with the HFSC group. Conclusions: Based on the findings of this study, HFSC transplantation affects wound closure parameters and the expression of SDF-1α and CXCR4. As the SDF-1α expression level increases in the injured area, the HFSCs contribute to wound repair through the SDF-1α/CXCR4 axis. This result is extremely valuable because it raises the possibility of wounds healed by isolating autologous HFSCs from the patient.
Passive UV imaging polarimeter
Authors: Pellicori Samuel , Burke Elliot , Martinez Carol , Fernandez-Borda R. 
Published: September 2020

The static polarimeter concept has a design and application flexibility potentially covering spectral ranges from

<

220

n
m

to

∼

2500

n
m

. The original breadboard model of the passive UV polarimeter with sensitivity to 260 nm included elliptical analysis for general application such as biomedical, industrial, and commercial technology. It was adapted to be responsive to atmospheric and oceanic science and exoatmospheric planetary missions to provide linear polarization-resolved imagery in four spectral passbands between

∼

415

n
m

and

∼

340

n
m

in

5
∘

×

10
∘

fields of view. Simultaneous polarimetry is collected without electro-optical or mechanically moving or birefringent modulation of retardance. The compact, lightweight, rugged architecture uses instead stable thin-film components with low systematic instrumental polarization to provide high polarimetric accuracy. An internal polarization calibrator/stability monitor subsystem provides in-flight corrections for differential errors that might be induced by external environmental stresses.
All-fiber 1125  nm spectrally selected subnanosecond source
Authors: Zhluktova Irina V. , Filatova Serafima A. , Trikshev Anton I. , Kamynin Vladimir A. , Tsvetkov Vladimir B. 
Published: September 2020

In this paper, we demonstrate the selection of radiation from the stimulated Raman scattered radiation, while using a spectral filter, based on a high-reflection fiber Bragg grating and an optical circulator. As a result, a stable pulsed signal was obtained at a wavelength of 1125 nm with a repetition rate of 1 MHz. The pulse duration and energy varied from 120 to 173 ps and 9 to 15 nJ, respectively, depending on the operating regimes of the master oscillator and amplifier.
Robust frequency stabilization and linewidth narrowing of a laser with large intermittent frequency jumps using an optical cavity and an atomic beam
Authors: Lee Won-Kyu , Yong Park Chang , Heo Myoung-Sun , Yu Dai-Hyuk , Kim Huidong 
Published: September 2020

An experimental method is developed for robust frequency stabilization using a high-finesse cavity when the laser exhibits large intermittent frequency jumps. This is accomplished by applying an additional slow feedback signal from Doppler-free fluorescence spectroscopy in an atomic beam with increased frequency locking range. As a result, a stable and narrow-linewidth 556 nm laser maintains the frequency lock status for more than a week and contributes to more accurate evaluation of the Yb optical lattice clock. In addition, the reference optical cavity is supported at vibration-insensitive points without any vibration isolation table, making the laser setup more simple and compact.
Recognition of multifont English electronic prescribing based on convolution neural network algorithm
Authors: Mohammed Muthana J. , Mohammed Emad A. , Jarjees Mohammed S. 
Published: September 2020

Abstract
The printed character recognition is an efficient and automatic method for inputting information to a computer nowadays that is used to translate the printed or handwritten images into an editable and readable text file. This paper aims to recognize a multifont and multisize of the English language printed word for a smart pharmacy purpose. The recognition system has been based on a convolution neural network (CNN) approach where line, word, and character are separately corrected, and then each of the separated characters is fed into the CNN algorithm for recognition purposes. The OpenCV open-source library has been used for preprocessing, which can segment English characters accurately and efficiently, and for recognition, the Keras library with the backend of TensorFlow has been used. The training and testing data sets have been designed to include 23 different fonts with six different sizes. The CNN algorithm achieves the highest accuracy of 96.6% comparing to the other state-of-the-art machine learning methods. The higher classification accuracy of the CNN approach shows that this type of algorithm is ideal for the English language printed word recognition. The highest error rate after testing the system using English electronic prescribing written with all proposed font-types is 0.23% in Georgia font.
A forgotten translation by Theodorus Gaza unveiled and its context
Authors: Galán Vioque Guillermo 
Published: September 2020

Abstract
The emigrant Byzantine humanist Theodorus Gaza (c. 1400 -1475) is well known as a teacher of Greek in various Italian cities, as a copyist of Greek manuscripts, and as a translator of Greek philosophical works into Latin. His undertakings as a translator of Latin works into Greek, among which his version of Cicero’s De senectute deserves mention, have gone relatively unnoticed. In this article we rediscover a largely forgotten translation of Cic. Fam. 1.1, despite it having been printed independently twice (Paris 1542 and 1548) and having been included as an example of translation in the oft reprinted manual of rhetorical exercises, Elementa rhetoricae (first printed in Basel in 1541), by the Lutheran Joachim Camerarius.
Die Wiederentdeckung von Byzanz: Die kretische Ikone von Göttingen und die Koimesis-Darstellung in der byzantinischen und postbyzantinischen Epoche
Authors: Giannoulis Markos 
Published: September 2020

Abstract
What are the similarities and the differences of icons from the same workshop depicting the same subject? An important portable icon with the representation of the Dormition of the Virgin, hitherto unknown, preserved today in the Art Collection of the University of Göttingen, helps answering this question. The studydeals with the fascinating journey of this icon from Venetian-dominated Crete in the 15th century to Germany of the 18th century. Furthermore, this paper shows that the icon of Göttingen belongs to a group of a numerous icons that they all derive from the same icon-workshop of the renowned Cretan painters Andreas and Nikolaos Ritzos in Candia. Finally, it turned out that this icon was also the inspiration for Cretan painters of the 17th CE such as Emmanuel Lambardos and Viktor.
Writing letters and chronography in parallel: the case of Michael Glykas’ letter collection and Biblos Chronike in the 12th century
Authors: Kiapidou Eirini-Sophia 
Published: September 2020

Abstract
This paper focuses on the 12th-century Byzantine scholar Michael Glykas and the two main pillars of his multifarious literary production, Biblos Chronike and Letters, thoroughly exploring for the first time the nature of their interconnection. In addition to the primary goal, i. e. clarifying as far as possible the conditions in which these two works were written, taking into account their intertextuality, it extends the discussion to the mixture of features in texts of different literary genre, written in parallel, by the same author, based on the same material. By presenting the evidence drawn from the case of Michael Glykas, the paper attempts to stress the need to abandon the strictly applied taxonomical logic in approaching Byzantine Literature, as it ultimately prevents us from constitute the full mark of each author in the history of Byzantine culture.
When Christology intersects with embryology: the viewpoints of Nestorian, Monophysite and Chalcedonian authors of the sixth to tenth centuries
Authors: Krausmüller Dirk 
Published: September 2020

Abstract
The notion that the soul comes into existence simultaneously with the body at the moment of conception was originally introduced into the Patristic discourse as an alternative to the Origenist notion of a pre-existing soul. Yet from the sixth century onwards it was itself regarded as an Origenist tenet. Now it was claimed that only those who believed the soul to be created after the body were truly orthodox. The present article examines the links between this development and the Christological conversies.
Eight unedited poems to his friends and patrons by Manuel Philes
Authors: Kubina Krystina 
Published: September 2020

Abstract
This article presents the critical edition of eight hitherto unpublished poems by Manuel Philes together with a translation and a commentary. The poems are verse letters addressed to various high-ranking individuals. Poem 1 is addressed to the emperor, whose power is emphasised in a request to help Philes escape from his misery. Poem 2 is a fragment likewise addressed to the emperor. Poem 3 is a consolatory poem for a father whose son has died. In poem 4, Philes addresses a patron whose wife hurried to Constantinople after she had become the object of hostility of unknown people. Poem 5 is addressed to the month of August and deals with the return of a benefactor of Philes to Constantinople. In poem 6, Philes writes on behalf of an unnamed banker and asks the megas dioiketes Kabasilas to judge the latter justly. Poems 7 and 8 are tetrasticha including a request for wine.
Four lead seals of the 11th century from Yozgat
Authors: Laflı Ergün , Seibt Werner 
Published: September 2020

Abstract
In the museum of Yozgat in eastern-central Anatolia four eleventh century A.D. seals of Byzantine dignitaries are stored, all of them originate probably from central Anatolia. Basileios Trichinopodes was hypatos and strategos of Anazarbus in Cilicia in the middle of the eleventh century, Katakalon was hypatos and strategos of Larissa in Cappadocia in the third quarter of the same century, a civil dignitary, probably named Pirmanes, was protospatharios and chartoularios of the Bucellarian Theme in the second half of the tenth or early eleventh century, and Samuel Alousianos, a grandson of the last Bulgarian tsar Ivan Vladislav, was proedros and dux, probably fighting the Turkish invaders in Eastern Anatolia during the difficult years in the 1070s.
Coda: Literature, language, and creativity
Authors: Kukkonen Karin 
Published: September 2020

AbstractLiterature is often considered the creative expression of language par excellence. This coda considers how the perspectives from Construction Grammar, as they are outlined in this special issue, can enter into dialogue with recent developments in how literary studies address creativity. Construction Grammar concerns itself with the productive generation and manipulation of language in everyday contexts, but, as this special issue goes to show, these processes can also be discussed in terms of creativity and deployed to shed light on creative processes in the arts. Convergences between Construction Grammar and (cognitive) literary studies appear to emerge in particular around the question of creative practice in literary language and (1) in how far writing gives rise to particular kinds of creativity; (2) how one can generalize between different creative media, such as literature, painting and music; and (3) how writing-based creativity can be investigated. Literary studies with its interests in media environments, social/historical context and textual analysis might provide a larger testing ground for claims about the compatibility and incompatibility of everyday and literary creativity as they are put forward in this special issue.