bluuebunny/crossref_metadata_2025 huggingface dataset:
Pricing of Climate Risk Insurance: Regulation and Cross-Subsidies
Authors: Oh Sangmin S. , Sen Ishita , Tenekedjieva Ana-Maria K.
Published: October 2022

Homeowners’ insurance, a $15 trillion market by coverage, provides households financial protection from climate losses. Insurance premiums (rates) are subject to significant regulations at a state level in the United States. Using novel data on filings made by insurers to regulators, we propose a metric to quantify the extent of regulation in individual states. We provide evidence of decoupling of insurance rates from their underlying risks and identify regulation as a driving force behind this pattern. Rates are least reflective of risk in states we classify as "high friction", i.e. states where regulations appear most restrictive. We identify two sources behind the decoupling. First, in high friction states, rates have not adequately adjusted in response to the growth in losses. Second, insurers have cross-subsidized high friction states by raising rates in low friction states. Our results imply that households in low friction states are disproportionately bearing the risks of households in high friction states. More broadly, our findings question whether insurance rates can play a useful role in steering climate adaptation and whether households will have continued access to insurance.
THE RELATIONSHIP BETWEEN RENEWABLE ENERGY USE AND ECONOMIC GROWTH FOR ENERGY IMPORTING EMERGING ECONOMIES
Authors: NAİMOĞLU Mustafa
Published: October 2022

This study examines the relationship between renewable energy use and economic growth for 16 energy-importing countries for the period 1990-2018. These economies have attracted attention in the last 29 years by increasing their use of renewable energy by 556.21%, their total GDP by 466.19% and their total energy imports by 388.96%. Therefore, in this study, the long-term relationship is investigated by using annual data of real GDP, real gross capital, labor, and renewable energy use for 16 energy-importing countries. Firstly, unit root tests are used to determine the stationarity of the series. Then, the cointegration relationship was tested with a heterogeneous panel cointegration test and the cointegration relationship was found. The study found that all of the variables examined had positive and statistically significant coefficients. Additionally, the error correction model used in the study indicated that there is unidirectional causality from economic growth to renewable energy use in both the short and long term. This supports the conservation hypothesis, which suggests that economic growth and renewable energy use are interdependent. Therefore, the study's results suggest that any policies aimed at reducing energy use in these countries will not harm economic growth.
Sitzdiskomfort: Referenzwerte von Druckkenngrößen für Bürostühle
Authors:   Professur für Arbeitswissenschaft, Institut für Technische Logistik und Arbeitssysteme der TU Dresden, Bührer Mark , Wähnert Svetlana ,   Professur für Arbeitswissenschaft, Institut für Technische Logistik und Arbeitssysteme der TU Dresden, Schumacher Laura ,   Professur für Arbeitswissenschaft, Institut für Technische Logistik und Arbeitssysteme der TU Dresden
Published: October 2022

Seit Jahren sind Erkrankungen des Bewegungsapparats mitunter führend verantwortlich für Arbeitsunfähigkeit in Deutschland. Ein Teil davon ist statisch sitzender Arbeit auf Bürostühlen zuzuordnen. Neben physischen Schäden durch Druckeinwirkung können zu harte Bürostühle zu einem Diskomfort führen. Etwaige Referenzwerte könnten bereits frühzeitig bei den Herstellern Anwendung finden und präventiv entgegenwirken.
Humorale Immunantwort von geimpften Personen im Verlauf der COVID-19-Pandemie
Authors:   Performa Nord, Zentrum für Gesunde Arbeit, Arbeitsmedizinischer Dienst, Bremen, Neumann Jan , Zeeb H. ,   Leibniz-Institut für Präventionsforschung und Epidemiologie – BIPS, Bremen, Dotzauer A. ,   Laboratorium für Virusforschung, Universität Bremen
Published: October 2022

Humoral immune response of vaccinated individuals during the COVID-19 pandemic With increasing infection pressure, the seroprevalence of antibodies against the nucleocapsid antigen of SARS-CoV-2 in a group of vaccinated study participants has increased significantly compared to our previous study in 2021 and is currently 29.6%. The congruence between a positive RT-PCR test and the detection of anti-nucleocapsid antibodies is high at 95.23%. The rate of infections not detected or unnoticed with an RT-PCR test was low and only one case could be proven exclusively serologically. In principle, it can be assumed that all study participants have reached a high level of immune protection induced by the vaccination. Regardless of the vaccination scheme, almost all people have protection-relevant antibody titers against the spike protein of the SARS-CoV-2 virus, even more than 300 days after vaccination. Keywords: SARS-CoV-2 – seroprevalence – spike protein – nucleocapsid protein – undetected cases
Kongressvorschau ARBEITSSCHUTZ AKTUELL
Authors:   HINTE Messe- und Ausstellungs- GmbH, Karlsruhe, Bietzker Corinna
Published: October 2022

50 Jahre ARBEITSSCHUTZ AKTUELL – die Fachmesse für Expertinnen und Experten der Arbeitsmedizin und Sicherheit und Gesundheit bei der Arbeit feiert Jubiläum! Drei Tage werden aktuelle Themen aus Arbeits- und Gesundheitsschutz präsentiert, 10.000 Fachbesucherinnen und -besucher und 1000 Kongressteilnehmende erwartet, 200 Unternehmen zeigen Innovationen und in 180 Vorträgen referieren 100 Speaker auf der Stage und im Regionalforum. Messe und Kongress bieten Wissenstransfer und Austausch.
Berufliches Stehen – „Gehen“ als Entlastungsfaktor
Authors:   Fakultät für Wirtschaftsingenieurwesen, Hochschule für angewandte Wissenschaften München, Rücker Lisa
Published: October 2022

In vielen beruflichen Bereichen wird nach wie vor häufig und langdauernd im Stehen gearbeitet. Gesundheitliche Beeinträchtigungen wie Muskel-Skelett-Beschwerden können die Folge sein. Im folgenden Beitrag werden die aktuellen Empfehlungen des Länderausschusses für Arbeitsschutz und Sicherheitstechnik hinterfragt und neue Studienergebnisse zum Thema „Bewegung bei andauernder Steharbeit“ betrachtet.
Vers un complément à l’audiométrie tonale pour le suivi auditif du militaire
Authors: VANNSONA E. , CASSOUB L. , RAJOELISONC P. , PARAOUTYD N. , WALLAERTD N. , LORENZID C. , BOUYE J-C. , SUIEDE C. , FUXE T. , ANDÉOLE G.
Published: October 2022

Le suivi auditif des militaires exposés au bruit repose actuellement sur l’audiométrie tonale liminaire. Des travaux chez l’animal ont montré qu’une exposition au bruit pouvait entraîner l’apparition de synaptopathies cochléaires irrémédiables, malgré une élévation transitoire des seuils auditifs liminaires. L’extrapolation à l’humain suggère que l’exposition au bruit pourrait entraîner des lésions non détectables par l’audiométrie tonale liminaire réalisée à distance de l’exposition au bruit. Ainsi les synaptopathies cochléaires sont également appelées « pertes auditives cachées » ou « hidden hearing loss ». Cependant, leur existence chez l’humain normo-entendant demeure incertaine. Pour tenter de répondre à cette question, l’Institut de recherche biomédicale des armées a mesuré les capacités auditives supraliminaires de 35 sujets normo-entendants ayant entre une et 24 années d’exposition professionnelle au bruit. Les résultats montrent que les scores d’identification de parole en environnement bruyant et la capacité à détecter une modulation de fréquence, se dégradent avec le nombre d’années d’exposition, indépendamment de l’âge des sujets. Ces résultats pourraient être compatibles avec la présence de synaptopathies cochléaires. Ils suggèrent que le suivi auditif du militaire pourrait être amélioré par la réalisation de tests type audiométrie vocale dans le bruit. Ces tests nécessitent d’être validés par la mise en place d’études longitudinales incorporant des sujets exposés au bruit.
Crises d’angoisse… ou pas
Authors: BERTRAND L. , LABOUDÈRE E. , PELANNE E.
Published: October 2022

L’hypoglycémie réactionnelle ou fonctionnelle est une entité particulière comprenant des hypoglycémies post prandiales vraies, symptomatiques, sans étiologie retrouvée. Le médecin se doit d’éliminer toute cause organique par un interrogatoire minutieux et un bilan orienté. À partir d’un cas clinique, nous proposons une réflexion sur cette pathologie et ses conséquences médico militaires.
Utilisation des colliers de dressage et des colliers anti-aboiement dans le cadre du dressage des chiens militaires ou de Gendarmerie
Authors: TROMBINIA G. , AUTIER-DERIANB D. , FONTAINEB E. , BOUÉC S. , QUAIND C. , COURTINE C. , FREULONF M. , FLORENCE G.
Published: October 2022

L’utilisation des colliers électriques, employés dans le dressage des chiens militaires français, est actuellement de plus en plus remise en question lors des discussions entre les vétérinaires et les cynotechniciens des armées. L’article présente un état des lieux des connaissances scientifiques sur le rapport bénéfices-risques de l’utilisation des colliers de dressage et des colliers anti-aboiement. Les dispositions réglementaires et infra-réglementaires françaises autorisent l’utilisation des colliers électriques sous contrôle d’un maître de chien encadrant qualifié. Les colliers de dressage utilisés pour dresser à distance des chiens et les colliers anti-aboiement sont des dispositifs qui utilisent des stimulations électriques très variables en fonction des modèles. Les effets immédiats du choc, les résultats obtenus sur les apprentissages, le stress et la concentration en cortisol salivaire ont été étudiés lors de l’utilisation des colliers de dressage. Les facteurs prédisposants et déclenchants des aboiements intempestifs et les effets obtenus lors de l’utilisation des colliers anti-aboiement ont également été analysés. Les auteurs émettent un avis défavorable quant à l’utilisation des colliers de dressage et anti-aboiements et recommandent de privilégier les autres méthodes disponibles.
Wastewater QC workflow in GalaxyTrakr (SSQuAWK4) v2
Authors: Amirzadegan Jasmine
Published: October 2022

PURPOSE: Step-by-step instructions for checking sequence quality for SARS-CoV-2 wastewater samples using SSQuAWK: SARS - CoV - 2 Sequence Quality Assurance Workflow and Kontraption. The SSQuAWK workflow, implemented in CFSAN's custom Galaxy instance (GalaxyTrakr) will produce quality assessments for raw reads (Illumina MiSeq paired-end fastq files). SCOPE: This protocol covers the following tasks: 1. Set up an account in GalaxyTrakr 2. Create a new history 3. Upload data and reference files 4. Execute the SSQuAWK workflow 5. Interpret the results Protocol and SSQuAWK workflow version history: Protocol V9 SSQuAWK version 4: Protocol version 9 includes some additional primer bed files. All SSQuAWK4 protocol steps listed in this guide are applicable to SSQuAWK4.0.2. Protocol V8 SSQuAWK version 4: Protocol version 8 has minor text corrections. The SSQuAWK version 4 workflow required minor edits on an updated backend system of GalaxyTrakr, and thus is now labeled as "SSQuAWK4.0.2" in GalaxyTrakr. All SSQuAWK4 protocol steps listed in this guide are applicable to SSQuAWK4.0.2. Protocol V7 SSQuAWK version 4: Protocol now includes a QC determination guidance table. The SSQuAWK version 4 workflow required minor bug edits on the backend, thus is now labeled as "SSQuAWK4.0.1" in GalaxyTrakr. All SSQuAWK4 protocol steps listed in this guide are applicable to SSQuAWK4.0.1. Protocol V6 SSQuAWK version 4: Best practice guidance on fastq.gz file uploads and new QC metric. Protocol V5 SSQuAWK version 3: Previous protocol version had broken links for FASTA and BED files, this version fixes the links. Protocol V4 SSQuAWK version 3: Metrics now reported with fewer softwares, fewer underlying GalaxyTrakr jobs,and about 50% fewerunderlying GalaxyTrakr steps. Cleaner output table formats now include QC placeholder columns for SRA metadata template. Protocol V3, SSQuAWK version 2: Addition of 5 new genome mapping metrics Protocol V2, SSQuAWK version 1: Addition of a detailed 12 minute video tutorial Protocol V1, SSQuAWK version 1: Basic protocol steps with screenshots Participation was supported by the: Research Participation Program at the U.S. Food and Drug Administration administered by the Oak Ridge Institute for Science and Education (ORISE) through an interagency agreement between the U.S. Department of Energy and the U.S. Food and Drug Administration. Joint Institute for Food Safety and Applied Nutrition (JIFSAN), University of Maryland by the Food and Drug Administration (FDA) of the U.S. Department of Health and Human Services (HHS). The American Rescue Plan Act of 2021, Congress provided temporary funding for FDA to develop the capacity to sequence SARS-CoV-2 RNA from wastewater samples and to conduct a sampling and sequencing project through 2022.
Gazetecilik ve Edebiyatın Gelişmesinde ‘Tefrika’nın Rolü ve İşlevi Üzerine Bir Değerlendirme
Authors: YÜCEL Ömer Faruk
Published: October 2022

Bu çalışma, gazetede yer alan fakat edebiyatın gelişmesinde de önemli bir role sahip olan tefrikanın işlevlerini ele almaktadır. 19. Yüzyıl, Batılılaşma hareketlerinin siyasî ve sosyal bakımdan hayatın içine girmeye başladığı bir dönemdir. Tanzimat Fermanı, Islahat Fermanı ve Meşrutiyet idaresinin kabulü gibi siyasî gelişmeler, zamanla kültür hayatı üzerinde de önemli etkilere sebep olmuştur. Gazete, bu etkiyi hızlandıran o devrenin en önemli kitle iletişim aracıdır. Roman, Batılı tarzda hikâye, tiyatro gibi Batılı türlerin Türk edebiyatına girişinde ve gelişmesinde gazeteciliğin önemli bir rolü vardır. Türk edebiyatının yeni türler ile değişim yaşamasında önemli bir vasıta rolü oynayan gazete, geniş insan yığınları üzerinde kültürel etkilere sahiptir. Uzun edebî metinlerin belli diziler hâlinde neşredilmesiyle ortaya çıkan tefrika, Türk gazeteciliğinde çok uzun süre etkisini sürdürmüştür. Tefrika, uzun edebî metinlerin gazetede görünmesini mümkün kılarak daha fazla insanın edebiyat ile tanışmasına zemin hazırlamıştır. Türk edebiyatında pek çok genç yazar, gazetelerdeki yazıları ile meşhur olmuştur. Bu yazılar ise genelde ‘tefrika’ ile gazetelerde kendine yer bulmuştur. Tefrika, gazetecilik bakımından kültürel ve edebî bir faaliyet olması, edebiyat açısından ise popüler edebiyat başta olmak üzere telif ve tercüme pek çok eserin okurla buluşması dolayısıyla okur – eser etkileşiminin temini ile edebî mahfilde hızla tekâmül etmiştir. Tefrika aynı zamanda müelliflerin kitap basım masraflarının da önüne geçmiştir. Bu yüzden tefrika, edebiyat ve gazetecilik arasında karşılıklı bir fayda ilişkisi inşa etmiş, fikir hayatının canlanmasına aracılık etmiştir.
Surface Dimer Model in the Theory of Adsorption on Graphene
Authors:   Ioffe Physical Technical Institute, Russia, Davydov S.Yu. , Lebedev A.A. ,   Ioffe Physical Technical Institute, Russia, Posrednik O.V. ,   St. Petersburg Electrotechnical University (“LETI”), Russia
Published: October 2022

Model of the surface dimer formed by coupling adsorbing atom and surface substrate atom by covalent bond is proposed. This model is used for the calculations of the charge transfers between dimer’s atoms and between dimer and graphene substrate. Effects of Coulomb and electron-phonon interaction on charge transfers are thoroughly studied. Role of inter-adatoms dipole-dipole repulsion and exchange interactions are examined. Adsorption on epitaxial graphene is briefly discussed.
Polydimethylsiloxane/Glass-Based Composite Elastomer for Thermophysical Applications
Authors:   ITMO University, Russia, Antonov E.V. , Sosnin I.M. ,   ITMO University, Russia,   Togliatti State University, Russia, Vlassov S. ,   University of Tartu, Estonia, Dorogin L.M. ,   ITMO University, Russia
Published: October 2022

The possibility of reducing the thermal conductivity of the composite material based on polydimethylsiloxane by adding hollow glass microspheres as fillers was tested. Based on the data obtained, it can be concluded that a composite material containing microspheres at a concentration of 2.5% has a lower thermal conductivity coefficient by 40%, but also loses adhesion work and transparency in the optical range.
Identifying the Determinant Dimensions of Shopper Convenience for Online Versus Instore Shopping in the Pre and Post CoVID-19 Eras
Authors:   Texas Tech University, United States, Kakar Ashish , Kakar Adarsh Kumar ,   Alabama State University
Published: October 2022

Abstract Background: Shopper convenience is a key determinant of why shoppers choose and buy from a particular retail format – online versus instore. However, there are no systematic studies that assess which dimension of shopper convenience is salient for shoppers in online versus instore shopping instore. Further, to the best of our knowledge no study has investigated whether and how these determinant dimensions of shopper convenience have changed with the advent of COVID-19. Method: In this study, 1324 responses of 172 shoppers using the Myers and Alpert (1968) approach were analyzed to identify the determinant dimensions of convenience for online and instore shopping in the pre-COVID-19 era and test their validity in the context of their actual purchase behavior. Later, the study was replicated with the same shoppers in the post-COVID-19 era. Results: The results of the study show that of the four dimensions of convenience, while shopper assessment of “search” convenience was the most important attribute for both online and instore shopping, and “transaction” convenience the most different between the two retail outlets, the determinant dimensions in both retail outlets were “access” and “possession” convenience with instore shopping holding an advantage in possession” convenience and online shopping holding an advantage in “access” convenience. However, in a replication of the study in the post coronavirus era, online shopping outlets were found to have the advantage in both the determinant dimensions of convenience. Conclusion: This study perhaps for the first time show how shopper convenience perceptions have changed in pre and post COVID-19 eras for both instore and online shopping. Recommended Citation Kakar, Ashish and Kakar, Adarsh Kumar (2020) "Identifying the Determinant Dimensions of Shopper Convenience for Online Versus Instore Shopping in the Pre and Post CoVID-19 Eras," Pacific Asia Journal of the Association for Information Systems: Vol. 12: Iss. 4, Article 4. DOI: 10.17705/1pais.12404 Available at: https://aisel.aisnet.org/pajais/vol12/iss4/4
THE MERLIN PROJECT: MALAYSIAN STUDENTS’ ACCEPTANCE OF AN AI CHATBOT IN THEIR LEARNING PROCESS
Authors: NEO Mai
Published: October 2022

The COVID-19 pandemic has accelerated the educational landscape of institutions of higher education, which were predominantly face-to-face. In Malaysia, many universities converted their courses into online courses to keep up with the challenges of working from home during the pandemic, using web technologies and blended learning approaches. However, there are challenges in ensuring students’ attention and retention rates are maintained and enough support and scaffolding are provided to them when they are learning online. As such, the MERLIN Project was undertaken to develop a virtual learning assistant that would provide online support to students outside of their online classes. The project used Artificial Intelligence (AI) technology with Natural Language Processing (NLP) features to develop a chatbot that simulated human-like conversation between chatbot and students. Content in the learning environment was media-rich and mapped to Mayer’s 12 Multimedia Learning Principles. Data from 102 students was collected to gauge their perceptions and feedback. Results showed that students found the chatbot to be helpful in their learning process and improved their understanding of the course material. A conceptual learning framework for the use of AI chatbots as learning assistants is proposed to improve students’ online learning experiences in the new normal.
A SYSTEMATIC REVIEW OF STUDIES ON ONLINE EDUCATION FOR AUTISM SPECTRUM DISORDER
Authors: POLAT Hamza , TASLIBEYAZ Elif , KAYALAR Murat Tolga
Published: October 2022

The novel coronavirus (2019-nCoV) outbreak caused a paradigm change in education and made it necessary to conduct educational activities through online learning environments (OLEs). This sudden shift also affected special education practices for learners with autism spectrum disorder (ASD). The present study aims to investigate the current issues in online education studies relating to individuals with or involved with (i.e., parents or teachers) ASD. For this purpose, a literature search was carried out to review the relevant studies conducted from 2010 to 2019, and 19 studies were selected based on predefined research criteria. Content analysis was performed to analyze the reviewed articles considering the following domains: publication year, country, field, purpose, research methods, instruments, results, and suggestions. Results indicated that the publication rates of studies pertaining to individuals with ASD, their parents and teachers increased after 2014, and although OLEs are found to be beneficial in meeting the needs of the target group, several improvements are needed to make them more useful and adaptable.
EMERGENCY DISTANCE EDUCATION DURING THE COVID-19 PANDEMIC: A QUALITATIVE RESEARCH FROM A SPECIAL EDUCATION PERSPECTIVE
Authors: PURBUDAK Aysegul , YILMAZ Mutluhan , CAKIR Ozlem
Published: October 2022

It is a fact that the world was caught unprepared for the Covid-19 outbreak. Especially when the epidemic broke out in many countries, educational activities were suspended for a while, and then distance education was started. Since this process is the result of a sudden transition, it has been seen that it brings with it many difficulties. Among these difficulties, perhaps the most prominent was the situation of students who need special education and special education teachers. In this direction, the aim of the study is to determine the difficulties experienced by students with special needs and special education teachers in this process. This research was carried out within the framework of the qualitative method. Within the scope of the research, 20 special education teachers were reached, and their opinions were taken with a semi-structured interview form. The responses received were divided into codes and categories, which were analyzed by content analysis, one of the qualitative analysis methods. According to the findings, special education teachers stated that they had the most difficulty in communicating with their students while negating the distance education process. Accessibility problem was also stated as an important problem and the problems caused by low parental technology literacy were emphasized. Although special education teachers find positive justifications for ensuring that education somehow continues in the distance education process, they make several valuable suggestions for structuring the system more inclusive and for all potential users. Platforms for students who need special education in the distance education process can be designed to support topics such as content, interaction, socialization. The family can take a more active role in this process as a stakeholder. For this, family members can be motivated with the necessary prior information and demands full of expectations.
ENHANCING STUDENTS’ ENGLISH AND DIGITAL LITERACIES THROUGH ONLINE COURSES: BENEFITS AND CHALLENGES
Authors: ABA SHA’AR Mohammed Yassin Mohd , BUDDHARAT Chamaiporn , SINGHASUWAN Phanit
Published: October 2022

This study aims to examine the benefits of incorporating online courses, MyELT, for General English (GE) curricula and to investigate the challenges that negatively affect the expediency of the courses in improving the students’ English proficiency and digital literacy. 351 participants were randomly selected and responded to a questionnaire and out of which 15 were conveniently selected for a semi-structured interview. Qualitative data was also collected through personal journaling to record hidden challenges for the expediency of MyELT. The data were analyzed through descriptive statistics and content analysis. The findings correlated and revealed that MyELT courses were beneficial in their flexibility as they helped fulfilling GE courses’ description and proportionately improved students’ English proficiency and digital literacy. Neither students’ perceptions nor teachers’ roles and background were challenging factors. The expediency of MyELT was, thus, challenged by four factors namely: teachers’ teaching practices, their inability to mentor students’ performance which further instigated some students to do unethical practices, the company system of accessibility, and MyELT courses content
ATOMIC PHYSICS TEACHING MATERIALS IN BLENDED LEARNING TO IMPROVE SELF-DIRECTED LEARNING SKILLS IN DISTANCE EDUCATION
Authors: ERLINA Nia , PRAYEKTI Prayekti , WICAKSONO Iwan
Published: October 2022

Atomic physics teaching materials support student motivation to learn independently, guide, and direct students to master material with abstract characteristics. The teaching materials in blended learning
can improve the tutorial system’s interaction process in distance education with special characteristics. Universitas Terbuka students have various ages, professions, geographic location, social environment, and prior knowledge. This study aimed at analyzing the practicality and effectiveness of atomic physics teaching materials in blended learning to improve students’ self-directed learning skills in the open and distance education system. This research involving 121 students spread across 12 regional offices in Indonesia. Analysis of the impact and consistency of students’ self-directed learning skills used inferential statistics, then for data analysis, the improvement used N-gain. The results of the study showed the average tutorial feasibility using atomic physics teaching materials is the most dominant in explaining the teaching material thoroughly and is easy to understand. The average percentage of student activity results get the highest score on the activity of conducting discussions. The effectiveness analysis results showed the atomic physics teaching materials are proven to be effective in increasing students’ self-directed learning. ANOVA obtained no significant difference from all test classes so that atomic physics teaching materials are effective for application to students who have low, medium, and high abilities. The process of practicality and effectiveness has implications for developing teaching materials for distance education systems that must pay attention to the tutorial process, learning management system, and several other components.
STUDENT TEACHERS’ EXPERIENCES IN USING OPEN EDUCATION RESOURCE IN THE OPEN DISTANCE LEARNING CONTEXT
Authors: MAKOKOTLELA Matlala V.
Published: October 2022

Open education resource (OER) has become an increasingly important topic for consideration in the open distance learning (ODL) context. ODL students’ education should be learner-centered based on intrinsic motivation and OER usage. The purpose of this study was to explore the student teachers’ experiences in using open education resource in ODL. Even though many studies have been conducted on OER in ODL, there are insufficient empirical studies that have explored environmental education (EE) student teachers’ experiences in using OER in the ODL environment. In exploring this topic, the qualitative research methodology, interpretive paradigm, and rhizomatic approach were used. Participants and documents were purposefully sampled. Data was ethically collected through documentation and semi-structured telephonic interviews. The data were thematically analysed and processed to find patterns, keywords were identified, coded, and clustered into categories, and themes emerged. Qualitative findings showed that EE studentteachers knew about OER informally and some students wanted to use OER. Hindrances to OER usage by student-teachers included little engagement with OER by lecturers and costs to access OER.
DOLAYLI VERGİ GELİRLERİ VE ENFLASYON İLİŞKİSİ: TÜRKİYE ÜZERİNE BİR ARAŞTIRMA
Authors: YURTTAGÜLER İpek , KUTLU HORVATH Sinem
Published: October 2022

Ekonomiye pek çok maliyeti olan enflasyonun vergi düzeni ve mali sistem üzerinde de son derece önemli maliyetleri söz konusudur. Enflasyonun, iktisadi kararları etkilemesinin yanı sıra, reel gelir düzeyleri ve vergi yükü üzerinde etkili olduğu bilinmektedir. Diğer yandan, devletin yaptığı vergi uygulamaları da özellikle maliyet enflasyonunun oluşumunda rol oynamaktadır. Bu çerçevede, enflasyon ve vergiler arasındaki ilişkinin çok yönlü niteliği ekonominin tüm bileşenleri açısından önem arz etmektedir. Çalışmamızda, dolaylı vergi gelirleri ile enflasyon arsındaki ilişkinin yönü ve niteliğini ampirik açıdan incelemek amacıyla, Türkiye örneğinde dolaylı vergi gelirleri ile tüketici fiyat endeksi (TÜFE) arasındaki ilişki eşbütünleşme ve nedensellik analizi çerçevesinde araştırılmaktadır. Çalışmadan elde edilen bulgulara göre, Türkiye için TÜFE vergi gelirlerinin nedeni olmakla birlikte, vergi gelirlerinden TÜFE'ye doğru bir nedenselliğin varlığı tespit edilememiştir.
Hierodula
tenuidentata Saussure,
1869 (Mantodea: mantidae) has settled down in Bosnia and Herzegovina
Authors: Kulijer Dejan , Kahrić Adla , Vinko Damjan
Published: October 2022

In this paper the first record of the alien mantis species Hierodula tenuidentata for Bosnia and Herzegovina is provided. This large mantis has considerably expanded its distribution range in Europe in the last years, particularly in Balkan Peninsula. We found several adult specimens on 22nd and 23rd of August 2021 in urban area of Mostar city in the south of the country. This finding confirms the species’ establishment in the western part of Balkan Peninsula and fills the distribution gap along the eastern Adriatic Sea coast.
Robot sigue-lineas: una plataforma para la enseñanza del control lineal basado en modelos
Authors: Sala Antonio , Pitarch José Luis , Armesto Leopoldo
Published: October 2022

El robot sigue-líneas es un clásico en muchos cursos y asignaturas de robótica y mecatrónica, dado que un simple control proporcional lo estabiliza con buenas prestaciones. Pero no es tan común usarlo como plataforma para explicar control en variable de estado, polos, ceros, controlabilidad, etc. Aquí planteamos dicho análisis. Cuando el robot se desplaza “hacia atrás" es un proceso inestable y de fase no mínima; los alumnos de control básico no tienen muchas posibilidades de interaccionar con este tipo de procesos con lo que podría resultar de interés en docencia.
Base de datos abierta TRAM-FPV RACING. Secuencias completas de vuelo indoor para el estudio de drones de carreras.
Authors: Castiblanco Jose Manuel , Garcia-Nieto Sergio , Ignatyev Dmitry , Blasco Xavier
Published: October 2022

Este artículo presenta la base de datos abierta TRAM-FPV Racing, la cual ha sido generada a partir de un conjunto de vuelos indoor realizados con drones de carreras en la Universidad de Cranfield (UK), concretamente en el Flight Arena, uno de los campos de vuelo indoor más grandes del mundo con fines académicos y de investigación. La base de datos que se presenta, incorpora la información de posición y orientación en el espacio de cinco modelos de drones de carreras, empleando un sistema de medición óptico (OMS). Además, incluye las lecturas de los acelerómetros, giroscopios y ángulos de heading registrados por los sensores de las unidades inerciales (IMU). Estas bases de datos, frecuentemente, son empleadas para el desarrollo y el ajuste de los algoritmos de fusión sensorial que incorporan los drones para la estimación de su vector de estados actual. No obstante, su campo de aplicación es muy amplio, pudiendo ser empleadas, por ejemplo, para el desarrollo de los modelos matemáticos no lineales de los drones o para la generación de trayectorias.
Distribución dinámica de recursos vía juegos poblacionales y modelos dinámicos de pago
Authors: Martinez-Piazuelo Juan , Obando Germán , Quijano Nicanor , Ocampo-Martinez Carlos
Published: October 2022

Este artículo se centra en resaltar la vasta utilidad de la teoría de juegos, en particular aquella basada en la vertiente dinámica evolutiva, dentro del modelado y control de sistemas dinámicos complejos y de gran escala. Concretamente, y a través de ejemplos claros y de aplicación real, se motiva el uso de las dinámicas poblacionales para el modelado de sistemas ciberfísicos, así como los modelos dinámicos de pago para complementar un sistema de control en lazo cerrado con restricciones (físicas y operacionales), cuyos objetivos se alinean con la distribución dinámica de recursos y el alcance de equilibrios generalizados de Nash.
Resintonización dinámica de controladores SSOD-PI para evitar ciclos límite causados por perturbaciones tipo rampa
Authors: Miguel-Escrig Oscar , Romero-Pérez Julio-Ariel , Sánchez-Moreno José , Dormido Sebastián
Published: October 2022

Uno de los principales fenómenos a evitar en los sistemas con muestreo por umbrales fijos es la aparición de ciclos límite. Existe bibliografía sobre cómo evitarlos usando técnicas clásicas de análisis, sin embargo, dichos trabajos no tienen en cuenta el efecto de las señales que intervienen en el bucle sobre la robustez del sistema. En este trabajo se presenta una metodología que permite a un controlador por eventos del tipo SSOD-PI resintonizarse de forma dinámica para evitar oscilaciones de ciclo límite generadas por perturbaciones de tipo rampa.
StrikePy: nonlinear observability analysis of inputs, states, and parameters in Python
Authors: Rey Rostro David , F. Villaverde Alejandro
Published: October 2022

Dynamic models typically have unknown parameters that must be estimated from data, and they may also have unknown inputs (disturbances). The concept of observability, which describes the possibility of inferring the internal state of a system by measuring its output, can be extended to account also for the possibility of inferring its unknown parameters and inputs. Such an extension leads to a property that may be called FISPO (Full Input, State, and Parameter Observability). Its analysis is particularly relevant in systems biology, since models from this area often have a large number of unknown parameters, as well as state variables that cannot be measured due to experimental limitations. It is usually challenging to assess the FISPO of nonlinear models, which has motivated the development of specialized software such as the MATLAB toolbox STRIKE-GOLDD. However, despite the increasing popularity of Python among the biological modelling community, there was a lack of computational tools for FISPO analysis in this language. To fill this gap, we have developed an open source software toolbox, StrikePy, which implements the core functionalities in STRIKE-GOLDD.
Modelo para la evaluación de la calidad de pescado usando imágenes hiperespectrales
Authors: Arribas Andrea , Herrera Juan R. , Lopez-Cabo Marta , Vilas Carlos
Published: October 2022

Los consumidores de pescado demandan productos de calidad, la cual determina su valor comercial. Por lo tanto, existe un gran interés en el desarrollo de herramientas capaces de evaluar la calidad del pescado de forma rápida, fiable, y que no suponga la destrucción del alimento. En este sentido, la tecnología de imágenes hiperespectrales (HSI, por sus siglas en inglés) es de las más prometedoras y está experimentando un gran auge entre la comunidad científica. Sin embargo, en lo que se refiere a pescado, la mayoría de artículos se centran en pescado procesado, principalmente filetes. Por otra parte, dado que los datos HSI no son sencillos de interpretar, se recurre a modelos matemáticos que proporcionen estimaciones de la calidad del pescado a partir de dichos datos. En este trabajo se propone un modelo mátematico, obtenido mediante la combinación de HSI y regresión por mínimos cuadrados parciales, para la evaluación de calidad en pescado entero, concretamente rodaballo de acuicultura. Los resulados muestran que dicho modelo reproduce de forma satisfactoria el QIM, uno de los indicadores de calidad más utilizados.
Modelo térmico de un sistema de calefacción para vehículos de transporte público
Authors: Delgado María Luisa , Jiménez Jorge , Vázquez Francisco
Published: October 2022

En este trabajo se describe el modelo térmico de un sistema de calefacción para vehículos de transporte público, en concreto de autobuses. El modelo se compone de varios subsistemas. Por un lado, el habitáculo del vehículo, dividido en dos zonas térmicas (cabina de conductor y zona de pasajeros), así como la unidad de climatización de pasajeros, que han sido ajustados con datos obtenidos en ensayos realizados en autobuses reales. Por otra parte, el subsistema de la unidad de central de climatización de conductor se ha parametrizado con datos extraídos de ensayos realizados en una planta experimental. Este modelo térmico presenta una gran flexibilidad, permitiendo estudiar el comportamiento transitorio y estacionario del sistema de calefacción para diferentes condiciones de trabajo. El modelo contempla diversos parámetros, tales como la irradiancia solar incidente, el número de pasajeros, la temperatura exterior o la temperatura del motor, entre otros. Se muestra la validación del modelo con los datos extraídos de un ensayo en un autobús real.
Enhancement handling performance of 4-wheels drive electrical vehicle using advanced control technique
Authors: Hassan Ahmed , Frejo Jose , Maestre Jose
Published: October 2022

Electric vehicles (EVs) are gaining attention because they are environmentally friendly. Also, EVs can use in-hub motors, which can be independently controlled, improving maneuverability and allowing to set more ambitious control goals. In this paper, the lateral motion of an EV is controlled using the direct yaw control (DYC) method. The proposed controller uses the yaw moment produced by the longitudinal forces of the tires to stabilize the vehicle motion during critical cornering conditions to improve vehicle handling characteristics. The designed controllers, based on a linear model of the vehicle compute the optimal coupled traction/braking torque of the four in-wheel motors. By using unequal torque distribution, a restoring yaw moment can be generated in order to improve vehicle stability. Two controllers (PID and MPC) were designed to generate the moment required to achieve vehicle stability . The MPC outperforms PID regarding reduction of side slip angle and yaw rate.
Control de velocidad de microrrobot autónomo movido por cabeceo con flagelo pasivo
Authors: Mancha-Sánchez Enrique , Serrano Andrés J. , Tejado Ines , Vinagre Blas M
Published: October 2022

La robótica médica ha pasado de ser el futuro a estar entre nosotros en nuestro día a día. Existe una robótica médica más disruptiva, y con menos uso, por el momento, la microrrobótica. Existen multitud de aproximaciones a la hora de realizar un microrrobot. En este trabajo hemos realizado el modelo matemático inicial y el diseño de dos controladores para controlar la velocidad de un microrrobot autónomo movido por cabeceo con un flagelo pasivo acoplado. Mediante Simulink se han realizado estudios del modelo con distintos parámetros de entrada (simulando el empuje realizado mediante reacciones químicas) y el control de su velocidad. Se ha obtenido un modelo inicial que servirá de punto de partida para un modelo más completo. Además se realizó un prototipo funcional a escala.
Burdur İli Çiğ İnek Sütü Örneklerinde Aflatoksin M1 Kalıntısının İncelenmesi
Authors: TAŞÇI Fulya , EROL Zeki , KOCASARI Fatma
Published: October 2022

Bu çalışma, gıdalarda aflatoksin bulunmasından kaynaklanan ekonomik kayıplar ve halk sağlığı endişeleri nedeniyle aflatoksin M1 (AFM1) düzeyini belirlemek amacıyla yapılmıştır. Burdur ilindeki çiftliklerden toplam 82 çiğ inek sütü örneği rastgele alındı ve Enzyme-Linked Immunosorbent Assay (ELISA) yöntemi kullanılarak AFM1 açısından analiz edildi. İncelenen 82 çiğ inek sütü örneğinin 48'inde (%58,5) AFM1 seviyesinin 5,06 ila 50,63 ng kg-1 arasında ve ortalama kontaminasyon oranının 15,53 ±1,49 ng kg-1 olduğu tespit edildi. Süt örneklerinin 1'inde (%1,2) AFM1 düzeyi Türk Gıda Kodeksi ve AB Yönetmeliği'nde belirtilen yasal sınırların üzerinde olduğu belirlendi. Sonuç olarak çiğ süt örneklerinde belirlenen AFM1 seviyesi maksimum kalıntı limitlerinin altında ve insan tüketimine uygun bulunmuştur. Ayrıca Türkiye'deki yetişkin tüketici için AFM1'in tahmini günlük alım miktarı (EDI) belirlenmiştir. Yetişkin tüketicinin ortalama EDI'si (0,19 ng kg-1 vücut ağırlığı gün-1), önerilen günlük 0,2 ng kg-1 vücut ağırlığı gün-1 AFM1 alımına yakın bulunmuştur. Ancak bu konudaki çalışmaların düzenli bir program dahilinde tekrarlanması ve hem üreticilerin hem de tüketicilerin konu hakkında bilgilendirilmesi önerilmektedir.
Estimation of Soil Losses in Çapakcur Watershed (Bingol, Turkey) Using RUSLE Method and Comparison of Predicted Soil Losses with Sediment Yield
Authors: DEMİR Yasin , MERAL Alperen , DOĞAN DEMİR Azize
Published: October 2022

The present study aimed to determine the total and net erosion in the Capakcur watershed, which has a high erosion risk. Accordingly, annual soil loss in the Capakcur watershed was estimated using RUSLE method. Net erosion was determined directly by measuring the monthly flow rate and sediment concentrations of the Capakcur stream, which originated from the Capakcur watershed and flowed into the Murat River throughout 2019. Estimated soil loss in the Capakcur watershed was 96916.20 ton yr-1, and the amount of soil transported from the Capakcur stream was 68656.09 ton yr-1. Sediment delivery ratio (SDR) was calculated as 0.78. This ratio was well above the average SDR of Turkey (0.23). Topographic factors such as slope length and degree, rainfall, and low vegetation cover ratio in the watershed are the main causes of the high SDR. Due to the high SDR, the fertile surface soil layers of lands in the basin are carried to the streams. This causes both decrease in fertility in soils and pollution of the limited freshwater resources. In order to improve vegetation and management practices in the watershed, soil protection practices such as afforestation and terraces, wire cages and stone walls in gullies should be increased.
Effects of Sewage Sludge on Marigold (Tagetes erecta L.) and Garden Verbena (Verbena hybrida) Plants and Soil
Authors: TEPECİK Mahmut , ONGUN Ali Rıza , KAYIKÇIOĞLU Hüseyin Hüsnü , DELİBACAK Sezai , BİRİŞÇİ Tanay , AKTAŞ Erden , KALAYCI ÖNAÇ Ayşe , BALIK Gökhan
Published: October 2022

ABSTRACT

This study was carried out to determine effects of granular sewage sludge treatments on plant nutrients contents and heavy metal levels of marigold (Tagetes erecta L.) and garden verbena (Verbena hybrida) ornamental plants. Pot-experiments conducted under greenhouse conditions and experimental treatments included 0% (control), 3% SS, 6% SS and 9% SS treatments. The bioconcentration factor (BCF) values for Ni, Cd, Cr and Hg of marigold and Cd and Hg of garden verbena were ≥0.2 indicating that these plants could be used for remediation contaminated soils. In marigold and garden verbena plants, the greatest plant N, P, K, Mg and Ca value were respectively obtained from 9% SS and 6% SS treatments. In marigold plants, the greatest Na (784 mg kg-1) was obtained from 9% SS treatment, Fe (2236 mg kg-1) from 9% SS, Cu (7.4 mg kg-1) from 9% SS, Zn (136 mg kg-1) from 6% SS, Mn (142 mg kg-1) from 6% SS and B (42 mg kg-1) from the control treatments. In garden verbena plants, the greatest Na (696 mg kg-1) was obtained from 6% SS treatment, Fe (1700 mg kg-1) from 6% SS, Cu (12 mg kg-1) from 6% SS, Zn (115 mg kg-1) from 6% SS, Mn (100 mg kg-1) from 3% SS and B (47 mg kg-1) from the control treatments. In terms of heavy metals (Ni, Cd, Cr, Pb, As and Hg), toxicity impacts were not encountered in marigold and garden verbena plants. Soil heavy metal (Ni, Cd, Cr, Pb, As and Hg) levels were all below the threshold values.
Macromycetes Determined in Silifke (Mersin) District
Authors: KAPLAN Derya , UZUN Yasin , KAYA Abdullah
Published: October 2022

This study was carried out on the macrofungi samples collected from Silifke district of Mersin province. As a result, 122 macromycete species belonging to 91 genera, 48 families, 18 orders, and 7 classes, within Ascomycota and Basidiomycota were determined. Including the previously reported 11 species, a total of 133 macromycete taxa were compiled from the region. The list of the taxa was provided together with their habitats, collection dates, voucher numbers, and the citations for those reported before.
The Perks and Drawbacks of Physiologically-Based Pharmacokinetic Modeling
Authors: Quijano-Mateos Alejandra
Published: October 2022

Physiologically-based pharmacokinetic (PBPK) models use a mechanistic approach to integrate physiological parameters, physicochemical drug properties, and biochemical processes by means of mathematical equations to predict the concentration of a drug over time in blood and tissues. These models represent a robust tool for the pharmaceutical sciences, but also applications in chemical risk assessment for drugs and chemicals of forensic interest or in occupational hazards have been explored over the last decade. Much like other computational tools, PBPK models’ application face challenges concerning validity, transparency and lack of collaboration between professionals in different fields. The potential uses and challenges of PBPK modeling are discussed, as well as some ways to address the latter.
Quantitation of a “Malignancy Index” of the Relationship between Glioblastoma Microtumor Mass and Invasive Potential Using A Chicken Egg Albumen Matrix to Define Biomechanical Density Parameters that Promote Malignant Progression
Authors: Crawford Sarah , Hayward-Piatkovskyi Brielle
Published: October 2022

Although many factors contribute to the low translational success of pre-clinical data into human trials, one major factor is the failure of pre-clinical models to recapitulate essential physiological components of malignant tumors. An important body of clinical research indicates that the surrounding cellular microenvironment involving stromal tissue, matrix and the resident immune system play a critical role in the genesis of brain tumors of many diverse types. The research presented in this paper specifically addresses the role of biomechanical components in the brain extracellular matrix that may play a critical role in the development and spread of central nervous system malignancies, specifically gliomas. The data suggest that unfertilized chicken egg albumen, as a novel three-dimensional culture medium, provides a biologically relevant microenvironment that can support dynamic tumor formation and growth. Chicken egg albumen supplemented culture media produced compaction effects on tumor density that varied inversely with invasion zone expansion parameters. Based on this observed relationship, a ratio was extrapolated from primary data measurements to assess more quantitatively the relationship between microtumor spheroid surface area and invasion zone diameter. The ratio of microtumor invasion zone diameter divided by microtumor surface area was calculated and designated a “Malignancy Index” based on the premise that the relationship between the peripheral invasion zone diameter relative to surface area changes reflecting changing compaction parameters of the tumor mass represents a relevant assessment of tumor invasiveness, a fundamental hallmark of malignancy.