bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quantifying Changes in Vaccine Coverage in Mainstream Media as a Result of the COVID-19 Outbreak: Text Mining Study
Authors: Christensen Bente , Laydon Daniel , Chelkowski Tadeusz , Jemielniak Dariusz , Vollmer Michaela , Bhatt Samir , Krawczyk Konrad 
Published: September 2022

Background
Achieving herd immunity through vaccination depends upon the public’s acceptance, which in turn relies on their understanding of its risks and benefits. The fundamental objective of public health messaging on vaccines is therefore the clear communication of often complex information and, increasingly, the countering of misinformation. The primary outlet shaping public understanding is mainstream online news media, where coverage of COVID-19 vaccines was widespread.

Objective
We used text-mining analysis on the front pages of mainstream online news to quantify the volume and sentiment polarization of vaccine coverage.

Methods
We analyzed 28 million articles from 172 major news sources across 11 countries between July 2015 and April 2021. We employed keyword-based frequency analysis to estimate the proportion of overall articles devoted to vaccines. We performed topic detection using BERTopic and named entity recognition to identify the leading subjects and actors mentioned in the context of vaccines. We used the Vader Python module to perform sentiment polarization quantification of all collated English-language articles.

Results
The proportion of front-page articles mentioning vaccines increased from 0.1% to 4% with the outbreak of COVID-19. The number of negatively polarized articles increased from 6698 in 2015-2019 to 28,552 in 2020-2021. However, overall vaccine coverage before the COVID-19 pandemic was slightly negatively polarized (57% negative), whereas coverage during the pandemic was positively polarized (38% negative).

Conclusions
Throughout the pandemic, vaccines have risen from a marginal to a widely discussed topic on the front pages of major news outlets. Mainstream online media has been positively polarized toward vaccines, compared with mainly negative prepandemic vaccine news. However, the pandemic was accompanied by an order-of-magnitude increase in vaccine news that, due to low prepandemic frequency, may contribute to a perceived negative sentiment. These results highlight important interactions between the volume of news and overall polarization. To the best of our knowledge, our work is the first systematic text mining study of front-page vaccine news headlines in the context of COVID-19.
A Cognitive Behavioral Therapy Chatbot (Otis) for Health Anxiety Management: Mixed Methods Pilot Study
Authors: Goonesekera Yenushka , Donkin Liesje 
Published: September 2022

Background
An increase in health anxiety was observed during the COVID-19 pandemic. However, due to physical distancing restrictions and a strained mental health system, people were unable to access support to manage health anxiety. Chatbots are emerging as an interactive means to deliver psychological interventions in a scalable manner and provide an opportunity for novel therapy delivery to large groups of people including those who might struggle to access traditional therapies.

Objective
The aim of this mixed methods pilot study was to investigate the feasibility, acceptability, engagement, and effectiveness of a cognitive behavioral therapy (CBT)–based chatbot (Otis) as an early health anxiety management intervention for adults in New Zealand during the COVID-19 pandemic.

Methods
Users were asked to complete a 14-day program run by Otis, a primarily decision tree–based chatbot on Facebook Messenger. Health anxiety, general anxiety, intolerance of uncertainty, personal well-being, and quality of life were measured pre-intervention, postintervention, and at a 12-week follow-up. Paired samples t tests and 1-way ANOVAs were conducted to investigate the associated changes in the outcomes over time. Semistructured interviews and written responses in the self-report questionnaires and Facebook Messenger were thematically analyzed.

Results
The trial was completed by 29 participants who provided outcome measures at both postintervention and follow-up. Although an average decrease in health anxiety did not reach significance at postintervention (P=.55) or follow-up (P=.08), qualitative analysis demonstrated that participants perceived benefiting from the intervention. Significant improvement in general anxiety, personal well-being, and quality of life was associated with the use of Otis at postintervention and follow-up. Anthropomorphism, Otis’ appearance, and delivery of content facilitated the use of Otis. Technical difficulties and high performance and effort expectancy were, in contrast, barriers to acceptance and engagement of Otis.

Conclusions
Otis may be a feasible, acceptable, and engaging means of delivering CBT to improve anxiety management, quality of life, and personal well-being but might not significantly reduce health anxiety.
A novel auxiliary device enhances miniscrew stability under immediate heavy loading simulating orthopedic treatment
Authors: Yamagata Keita , Oga Yasuhiko , Kwon Sangho , Maeda-Iino Aya , Ishikawa Takanori , Miyawaki Shouichi 
Published: September 2022

ABSTRACT

Objectives
To evaluate miniscrew stability and perform a histomorphometric analysis of the bone around the miniscrew under a load corresponding to orthopedic force.

Materials and Methods
Thirty-two miniscrews were implanted into eight rabbit tibias. Auxiliary group rabbits received auxiliary devices with miniscrews (n = 8, 28 days; n = 8, 56 days), and those in the nonauxiliary control group received miniscrews without auxiliary devices (n = 8, 28 days; n = 8, 56 days). Elastics were placed between miniscrews to apply a load of 5 N. Miniscrew stability was evaluated using a Periotest. Bone-to-implant contact (BIC) and spike implantation depth were measured histomorphologically.

Results
Periotest values in the auxiliary group were significantly lower than those in the nonauxiliary group at all time periods. There was no significant difference in BIC between the auxiliary and nonauxiliary groups at 28 or 56 days postimplantation. The implantation spike depth in the auxiliary group was significantly greater at 56 days compared to that at 28 days. Newly formed bone was observed around the spike of the auxiliary device at 56 days.

Conclusions
The results suggest that the use of miniscrews in conjunction with auxiliary devices provides stable skeletal anchorage, which may be useful in orthopedic treatments.
Cuando la revolución es en femenino, es vandalismo. La Revolución de la Brillantina y la pugna por la memoria
Authors: Salas Sigüenza Irma 
Published: September 2022

En este artículo analizaré la Revolución de la Brillantina, nombre con el que se le conoce a dos manifestaciones que tuvieron lugar en la ciudad de México en agosto de 2019, en las que se denunció el alarmante incremento a nivel nacional de casos de violencia de género. Me centraré en las pintas de grafiti que se realizaron sobre el Ángel de la Independencia a manera de denuncia y en la reacción mediática en torno a esta forma de protesta. Planteo que estas intervenciones fueron una tentativa por parte de las colectivas feministas de (re)apropiarse de la narrativa histórica que se materializa en el monumento del Ángel y que las reacciones en medios y redes sociales evidencian las desigualdades sexo-genéricas (étnicas y de clase también) que predominan en la memoria colectiva mexicana. Para este análisis recurriré a fuentes documentales, principalmente prensa y foros en redes sociales en los que discutió sobre las intervenciones.
Uniqueness of system integration scheme of artificial intelligence technology in fractional differential mathematical equation
Authors: Liu Dingfa , Xiong Jie , Babaker Siddiq 
Published: September 2022

Abstract
At present, various branches of mathematics have developed very mature, but they still lack an internal structural correlation. They are like “islands” in the universe. If we can find the universal conversion relationship of the three basic mathematical structures of geometry, arithmetic and logic, it will greatly expand the field of mathematics. The ultimate goal of mathematics in the past is to pursue its preciseness, while the ultimate goal of mathematics in the future is to pursue its unity. Fractional differential equation is a generalization of integer order calculus. It discusses the theory of any non integer order differential and integral equation. The rise of artificial intelligence technology just provides the most powerful laboratory for the unity of mathematics. To explore the mystery of the brain and achieve the ultimate goal of artificial intelligence technology, the key is to make a major breakthrough in basic mathematical research and find a basic theoretical system describing the mutual mapping and transformation of different mathematical paradigms. The unity of mathematics will undoubtedly become the forefront of the development of mathematics in the future, which will be the core of the research on the new generation of intelligent computer and artificial intelligence technology.
Aktivitas Antioksidan Ekstrak Etanol Rimpang Jeringau Merah (Acorus sp.) dengan Metode DPPH (2,2-difenil-1-pikrilhidrazil)
Authors: Purwanti Nera Umilia , Susanti Ressi 
Published: September 2022

Rimpang jeringau merah (Acorus sp.) secara empiris digunakan oleh masyarakat Dayak untuk mengobati sejumlah penyakit seperti demam berdarah, penyakit kulit dan kolik. Sangat sedikit penelitian yang meneliti efektivitas penggunaan rimpang tanaman jeringau merah. Salah satu langkah untuk mengevaluasi efektivitas rimpang Acorus sp. adalah dengan melakukan studi aktivitas antioksidan rimpang tanaman. Metode yang digunakan untuk mengukur aktivitas antioksidan adalah metode penangkal radikal bebas DPPH (2,2 diphenyl1picrylhydrazyl) pada bagian air, bagian butanol, bagian heksana dan bagian etil asetat. Hasil penelitian diperoleh IC50 di dalam air adalah 31,189 ppm; fraksi butanol 13,631 ppm; fraksi heksana 28 ppm; dan bagian etil asetat adalah 8,585 ppm.
Examining the Key Factors that Drives Live Stream Shopping Behavior
Authors: Sawmong Sudaporn 
Published: September 2022

The purpose of this research was to examine the key factors that drive live-stream shopping behavior in Thailand. The specific objective was to determine the live stream shopping factors that influence purchase intention. The study was driven by the increasing role of e-commerce and live streaming shopping trends through social media marketing. For marketers, live-stream shopping is considered a valuable marketing strategy for commercial businesses to enhance sales, save expenses, and create unique marketing impacts. The study adopted the Uses and Gratification Theory and the Source Credibility Theory. Through these theories, the variables of the study were considered to be entertainment, informativeness, attractiveness, expertise, trustworthiness, culture, and purchase intention. A quantitative research methodology was adopted, with primary data collected from 370 respondents. The model was evaluated using reliability, validity, and CFA. SEM was used to analyse the hypotheses using AMOS and SPSS software. The results of the study indicated that four factors (entertainment, informativeness, expertise, and trustworthiness) have a significant and positive effect on purchase intention. Trustworthiness and entertainment had the highest effect. Attractiveness was found not to influence purchase intention, while culture did not moderate the effect of any variable on purchase intention. The research recommended that live streaming should be trustworthy in terms of sincerity, non-exaggeration, correct information, correct thoughts, and opinions. They should also be entertaining to establish positive interconnectivity between the user and the product or service, and also informative to contribute towards awareness of a product/service and offer insights that influence perceptions and behavioral intentions. Doi: 10.28991/ESJ-2022-06-06-011 Full Text: PDF
Implementation of an Automated Grading System for Microsoft Excel Spreadsheets and Word Documents
Authors: Iwata Kazunori , Matsui Yoshimitsu 
Published: September 2022

This paper describes an automated grading system for MS-Excel files and MS-Word files for information technology education. The system can relieve teachers’ workloads to grade many exercises of MS-Excel/MS-Word files. It can also provide immediate feedback and has a mechanism to prevent students from submitting copied files.In addition, we discuss the system’s effectiveness from both perspectives: the time to grade MS-Excel/MS-Word files and the average normalized gain computed by the operation records of the system in our university.
Signing made easy – hiding complexity of eSignature solutions in a black box
Authors: Mincer-Daszkiewicz Janina , Gąsior Tadeusz 
Published: September 2022

For many years Polish Higher Education Institutions (HEIs) have been actively incorporating digital solutions. Through the financial support of the state, as part of the Digital Poland program (carried out from 2014-2020), universities deployed student management systems and the Ministry of Science and Higher Education built central systems collecting data from HEIs. Changes in law introduced in 2019 in higher education, opened the way towards a fully electronic equivalent of the so-called student records folder.In early 2020, the world faced the COVID-19 pandemic which accelerated the digitalization process advancing forward the transition to remote handling of student information. As a result, many provisions were introduced by the Ministry of Science and Higher Education, which sanctioned the replacement of paper documents with electronic ones, provided that their authentication, integrity, non-repudiation and confidentiality are preserved.The amount and diversity of documents produced in HEIs is substantial. Many of them need to be signed: both for internal use (e.g. student records supporting study processes) and for external use (e.g. documents on student achievements required for further studies or employment). Furthermore, some of these documents travel across borders due to the increasing internationalization of higher education in Europe and beyond.Polish HEIs range in size from 1,000 to almost 50,000 students and often share the same student management system. Therefore, they would benefit from easy-to-share, customizable, simple to install and use, low-cost solution for storing digital certificates, signing documents and validating their signatures.The subject of this paper is the eSignForStudy project which addresses these needs. The objective of the project is to design and develop a highly configurable eSignature solution to be used in the Polish higher education area, interoperable with Erasmus Without Paper Network for cross-border digital document validation.
Using enterprise architecture and capability models in higher education: case studies from the EUNIS community
Authors: Le Strat Valérie , Maltusch Patrik , Suominen Esa , Ariño Martín Lluís Alfons 
Published: September 2022

There are important lessons to be learnt from actual implementations of enterprise architecture and capability models in higher education. In this paper we draw on three different case studies from France, Finland, and Spain respectively, showcasing both commonalities and important differences. The examples showcase use cases as well as the organisations and processes behind the developmentsWe argue that one important contribution from these European examples is an understanding of the national differences that need to be accommodated in a standard such as the recently introduced higher education reference model (HERM). One aspect that also becomes obvious from a European perspective is the need for translations–and how language use is closely connected to local variations in the Higher Education models.
Digitization of (Higher) Education Processes: Innovations, Security and Standards
Authors: Strack Hermann , Gollnick Marlies , Karius Sebastian , Lips Meiko , Wefel Sandro , Altschaffel Robert , Bacharach Guido , Gottlieb Matthias , Pongratz Hans , Radenbach Wolfgang , Waßmann Arn 
Published: September 2022

The digitalisation of educational processes is of increasing interest. The area of student mobility in particular can benefit greatly from digitalised processes. However, the number of projects is constantly increasing, and it is a challenge to keep track of them. Therefore, this paper highlights the diverse and projects in the EU, regarding innovations in digitization of education processes (at EDU, HEI, PEI level) and student mobility administration based on different standards and integration of security are presented, as well as views/results from ongoing projects (EMREX/ELMO, Europass/EDCI, eIDAS, EUid,Verifiable Credentials, DiBiHo, Kolibri, NBP initiative, PIM, OZG implementation for SIS, Self-Souverain Identities SSI).Future research can address extensive interoperability in detailed Layering Concepts for data and protocols - aiding some existing island solutions in standards and platforms in an independent way, also supporting internationalisation strategies.
Erasmus Without Paper: dream becoming reality
Authors: Leys Paul , Mincer-Daszkiewicz Janina 
Published: September 2022

The year 2022 will be crucial for the digital future of the Erasmus administration. The renewal of inter-institutional agreements will be done in a digital fashion and Higher Education Institutions need to support online learning agreements. While many of us are still struggling to make it work, the next digitalisation steps are already awaiting around the corner with nominations and Transcript of Records to be exchanged in a digital manner. Moreover the European Student Identifier will both facilitate data exchanges and ease authentication of students.During the years to come, the Erasmus Without Paper+ (EWP+) consortium aims to better support universities implementing the digitalisation roadmap. Transparency will be increased by establishing a new governance structure and by sharing more frequent updates for the HEI community about the state of play and next steps. Technical challenges and usability issues in the EWP Dashboard (also known as the Erasmus Dashboard) will be addressed and the EWP Network will improve its services in order to facilitate more efficient data exchanges between universities. Helpdesk services will be further enhanced. Moreover the consortium, together with a wide range of stakeholders, will lay the technical foundations for the further digitalisation of the Erasmus+ administrative processes.
PETROCHEMICAL PROMOTERS IN CATALYTIC CRACKING
Authors: Gómez Maria Elizabeth , Vargas Clemencia , Lizcano Javier 
Published: September 2022

This study is based on the current scheme followed by a refinery with available Catalytic Cracking capacity to process new feedstocks such as Straight Run Naphtha and Naphthas from FCC. These feedstocks are of petrochemical interest to produce Ethane, Ethylene, Propylene, i-Butane, Toluene and Xylene. To evaluate the potential of these new streams versus the Cracking-charged Residues, it was performed a detailed chemical analysis on the structural groups in carbons [C1-C12] at the reactor product obtained in pilot plant. A catalyst with and without Propylene - Promoter Additive was used. This study analyzes the differences in the chemical composition of the feedstocks, relating them to the yield of each petrochemical product. Straight Run Naphthas with a high content of Naphthenes, and Paraffines n[C5-C12] and i[C7-C12] are selective to the production of i-Butane and Propane, while Naphthas from FCC with a high content of n[C5-C12]Olefins, i-Olefins, and Aromatics are more selective to Propylene, Toluene, and Xylene. Concerning Catalytic Cracking of Naphthas, the Additive has similar selectivity for all the petrochemical products, their yields increase by about one point with 4%wt of Additive, while in cracking of Residues, the Additive increases in three points Propylene yield, corresponding to a selectivity of 50% (ΔC3= / ΔLPG).
COMPARISON OF COMBUSTION PROPERTIES OF SIMULATED BIOGAS AND METHANE
Authors: González Carlos Díaz , Arrieta Andrés Amell , Suárez José Luis 
Published: September 2022

The utilization of new renewable energy sources has been of special interest during the past years, seeking to decrease our dependence on fossil fuels and the corresponding environmental impact derived from their use. The combustion properties of a simulated gas composed of 60% methane and 40% carbon dioxide in volume are determined in this paper by means of calculation algorithms developed by the GASURE team, comparing them to pure methane properties. Furthermore, the effect of these properties on premixed flame characteristic phenomena is demonstrated. These properties were determined by theoretical estimations. The characteristic phenomena (laminar deflagration velocity, flame structure, radiation pattern) are determined experimentally. Results show a high effect of carbon dioxide in the combustion properties and characteristic parameters of a biogas premixed flame such as laminar deflagration velocity, flame structure and gas-methane exchangeability problems. The difference regarding flame structure and combustion properties lead to a difference in radiation pattern of the gases studied.
A NEW METHOD FOR THE EXPERIMENTAL DETERMINATION OF THREE-PHASE RELATIVE PERMEABILITIES
Authors: Pérez Carrillo Edgar Ricardo , Zapata Arango José Francisco , Santos Nicolás Santos 
Published: September 2022

Petroleum reservoirs under primary, secondary or tertiary recovery processes usually experience simultaneous flow of three fluids phases (oil, water and gas). Reports on some mathematical models for calculating three-phase relative permeability are available in the Literature. Nevertheless, many of these models were designed based on certain experimental conditions and reservoir rocks and fluids. Therefore, special care has to be taken when applying them to specific reservoirs. At the laboratory level, three-phase relative permeability can be calculated using experimental unsteady-state or steady state methodologies. This paper proposes an unsteady-state methodology to evaluate three-phase relative permeability using the equipment available at the petrophysical analysis Laboratory of the Instituto Colombiano del Petróleo (ICP) of Ecopetrol S.A. Improvements to the equipment were effected in order to achieve accuracy in the unsteady-state measurement of three-phase relative permeability. The target of improvements was directed toward to the attainment of two objectives:1) the modification of the equipment to obtain more reliable experimental data and 2) the appropriate interpretation of the data obtained. Special attention was given to the differential pressure and uncertainty measurement in the determination of fluid saturation in the rock samples. Three experiments for three-phase relative permeability were conducted using a sample A and reservoir rock from the Colombian Foothills. Fluid tests included the utilization of synthetic brine, mineral oil, reservoir crude oil and nitrogen. Two runs were conducted at the laboratory conditions while one run was conducted at reservoir conditions. Experimental results of these tests were compared using 16 mathematical models of three-phase relative permeability. For the three-phase relative permeability to oil, the best correlations between experimental data and tests using Blunt, Hustad Hasen, and Baker's models were obtained at oil saturations between 40% and 70%.