bluuebunny/crossref_metadata_2025 huggingface dataset:
High-speed PGC demodulation model and method with subnanometer displacement resolution in a fiber-optic micro-probe laser interferometer
Authors: Dong Yisi , Li Wenwen , Zhang Jinran , Luo Wenrui , Fu Haijin , Xing Xu , Hu Pengcheng , Dong Yongkang , Tan Jiubin
Published: February 2024

As the key of embedded displacement measurement, a fiber-optic micro-probe laser interferometer (FMI) is of great interest in developing high-end equipment as well as precision metrology. However, conventional phase-generated carrier (PGC) approaches are for low-speed scenes and local error analysis, usually neglecting the global precision analysis and dynamic effect of system parameters under high-speed measurement, thus hindering their broad applications. We present a high-speed PGC demodulation model and method to achieve subnanometer displacement measurement precision in FMI. This model includes a global equivalent resolution analysis and revelation of the demodulation error mechanism. Utilizing this model, the failure issues regarding the PGC demodulation method under high speed and large range are addressed. Furthermore, an ultra-precision PGC demodulation algorithm based on the combination of static and dynamic delay adaptive regulation is proposed to enable high-speed and large-range displacement measurement. In this paper, the proposed model and algorithm are validated through simulation and experimental tests. The results demonstrate a displacement resolution of 0.1 nm with a standard deviation of less than 0.5 nm when measuring at a high velocity of 1.5 m/s—nearly a tenfold increase of the latest study.
Strong light–matter interactions based on excitons and the abnormal all-dielectric anapole mode with both large field enhancement and low loss
Authors: Deng Yan-Hui , Lu Yu-Wei , Zhang Hou-Jiao , Shi Zhong-Hong , Zhou Zhang-Kai , Wang Xue-Hua
Published: February 2024

The room temperature strong coupling between the photonic modes of micro/nanocavities and quantum emitters (QEs) can bring about promising advantages for fundamental and applied physics. Improving the electric fields (EFs) by using plasmonic modes and reducing their losses by applying dielectric nanocavities are widely employed approaches to achieve room temperature strong coupling. However, ideal photonic modes with both large EFs and low loss have been lacking. Herein, we propose the abnormal anapole mode (AAM), showing both a strong EF enhancement of ∼70-fold (comparable to plasmonic modes) and a low loss of 34 meV, which is much smaller than previous records of isolated all-dielectric nanocavities. Besides realizing strong coupling, we further show that by replacing the normal anapole mode with the AAM, the lasing threshold of the AAM-coupled QEs can be reduced by one order of magnitude, implying a vital step toward on-chip integration of nanophotonic devices.
Highly efficient nonuniform finite difference method for three-dimensional electrically stimulated liquid crystal photonic devices
Authors: Guo Zhenghao , Liu Mengjun , Chen Zijia , Yang Ruizhi , Li Peiyun , Da Haixia , Yuan Dong , Zhou Guofu , Shui Lingling , Ye Huapeng
Published: February 2024

Liquid crystal (LC) photonic devices have attracted intensive attention in recent decades, due to the merits of tunability, cost-effectiveness, and high efficiency. However, the precise and efficient simulation of large-scale three-dimensional electrically stimulated LC photonic devices remains challenging and resource consuming. Here we report a straightforward nonuniform finite difference method (NFDM) for efficiently simulating large-scale LC photonic devices by employing a spatially nonuniform mesh grid. We show that the NFDM can be further accelerated by approximately 504 times by using the improved successive over-relaxation method (by 12 times), the symmetric boundary (by 4 times), the momentum gradient descent algorithm (by 3.5 times), and the multigrid (by 3 times). We experimentally fabricated the large-scale electrically stimulated LC photonic device, and the measured results demonstrate the effectiveness and validity of the proposed NFDM. The NFDM allocates more grids to the core area with steep electric field gradient, thus reducing the distortion of electric field and the truncation error of calculation, rendering it more precise than the finite element method and traditional finite difference method with similar computing resources. This study demonstrates an efficient and highly reliable method to simulate the large-scale electrically stimulated LC photonic device, and paves the way for customizing a large-scale LC photonic device with designable functionalities.
Studentsourcing—Aggregating and reusing data from a practical cell biology course
Authors: Goedhart Joachim
Published: February 2024

Practical courses mimic experimental research and may generate valuable data. Yet, data that is generated by students during a course is often lost as there is no centrally organized collection and storage of the data. The loss of data prevents its reuse. To provide access to these data, I present an approach that I call studentsourcing. It collects, aggregates, and reuses data that is generated by students in a practical course on cell biology. The course runs annually, and I have recorded the data that was generated by >100 students over 3 years. Two use cases illustrate how the data can be aggregated and reused either for the scientific record or for teaching. As the data is obtained by different students, in different groups, over different years, it is an excellent opportunity to discuss experimental design and modern data visualization methods such as the superplot. The first use case demonstrates how the data can be presented as an online, interactive dashboard, providing real-time data of the measurements. The second use case shows how central data storage provides a unique opportunity to get precise quantitative data due to the large sample size. Both use cases illustrate how data can be effectively aggregated and reused.
Challenges of proper disposal of old long-lasting insecticidal nets and its alternative uses in rural south-eastern Tanzania
Authors: Msangi Sheila J. , Mponzi Winifrida P. , Muyaga Letus L. , Nkya Joel D. , Mwalugelo Yohana A. , Msuya Hajirani M. , Lwetoijera Dickson W. , Kaindoa Emmanuel W.
Published: February 2024

Introduction

Insecticide-treated nets (ITNs), specifically long-lasting insecticidal nets (LLINs), are the most commonly used, scalable, and cost-effective tools for controlling malaria transmission in sub-Saharan Africa. However, the multiple alternative uses of retired LLINs have been associated with poor disposal practices. The World Health Organization (WHO) has provided guidelines and recommendations for the proper management of worn-out LLINs. This study assessed the existing alternative uses and disposal practices of old LLINs.

Methods

An explanatory sequential mixed-methods approach was used to assess LLINs existing alternative uses, disposal practices, knowledge, and perceptions regarding WHO recommendations on proper disposal of old LLINs among stakeholders in Kilombero and Ulanga districts, south-eastern Tanzania. A survey questionnaire was administered to 384 participants. Furthermore, the study employed focus group discussions (FGD) and key informant interviews (KII) to elucidate responses regarding existing disposal practices, associated challenges, and alternative uses of LLINs. The insights derived from both study components were subsequently used for inferential analysis.

Results

The major challenge influencing the proper disposal of LLINs was limited awareness of how to properly dispose of them. Of the 384 people surveyed, 97.0% were not aware of the WHO recommendations for the proper disposal of old LLINs. All key informants were unaware of the WHO guidelines for proper disposal of old LLINs. The common methods used to dispose of LLINs were burning (30.7%), disposing them into garbage pits (14.8%), and alternative uses (12.2%). Of the 239 respondents with LLINs, 41.0% had alternative use, while 59.0% had no alternative use. The common alternative uses were ropes for tying or covering items (20.9%), garden fencing (7.5%), chicken coops (5.0%), and 7.5% for other minor alternative uses.

Conclusion

Strengthening awareness and education on proper LLIN disposal practices among community members and key stakeholders is essential for enhancing malaria control efforts and preventing environmental pollution.
The dynamic volatility nexus of geo-political risks, stocks, bond, bitcoin, gold and oil during COVID-19 and Russian-Ukraine war
Authors: Shaik Muneer , Rabbani Mustafa Raza , Atif Mohd. , Aysan Ahmet Faruk , Alam Mohammad Noor , Kayani Umar Nawaz
Published: February 2024

We investigate the dynamic volatility connectedness of geopolitical risk, stocks, bonds, bitcoin, gold, and oil from January 2018 to April 2022 in this study. We look at connectivity during the Pre-COVID, COVID, and Russian-Ukraine war subsamples. During the COVID-19 and Russian-Ukraine war periods, we find that conventional, Islamic, and sustainable stock indices are net volatility transmitters, whereas gold, US bonds, GPR, oil, and bitcoin are net volatility receivers. During the Russian-Ukraine war, the commodity index (DJCI) shifted from being a net recipient of volatility to a net transmitter of volatility. Furthermore, we discover that bilateral intercorrelations are strong within stock indices (DJWI, DJIM, and DJSI) but weak across all other financial assets. Our study has important implications for policymakers, regulators, investors, and financial market participants who want to improve their existing strategies for avoiding financial losses.
Investigating the conception of collaborative learning (CL) and student engagement in the acquisition of practical skills (SEPSA) among prospective physical education and sports students
Authors: Temirkhanov Yerlan , Iskakov Taiyrzhan , Iralina Mira , Zhumagulov Aidyn , Atagulova Gulnaz , Boztayeva Saltanat
Published: February 2024

The study aims to explore the association between collaborative learning and practical skills acquisition (SEPSA) among 310 students from second-year, third-year, and fourth-year (First stage of higher education) from the Institute of Arts, Culture, and Sports- Abai Kazakh National Pedagogical University. The data was collected using the time-lag approach at three intervals; 3rd week, 7th week, and 14th week. The mediation analysis suggests that collaborative learning (CL) has a positive mediating association with self-efficacy, and student engagement in practical skills acquisition (SEPSA). Additionally, collaborative learning (CL) has a positive mediating association with value-benefits, and practical skills acquisition (SEPSA). Furthermore, Collaborative learning (CL) has a positive significant association with practical skills acquisition (SEPSA). Our findings highlight the important potential of CL for increasing SEPSA. The finding of the study has implications for higher education teachers, students, administrators, and policymakers for developing more effective teaching and learning approaches using the concept of sharing and discussion with a specific focus on students’ engagement.
“It’s not that I don’t trust vaccines, I just don’t think I need them”: Perspectives on COVID-19 vaccination
Authors: Pelletier Catherine , Gagnon Dominique , Dubé Eve
Published: February 2024

In Quebec (Canada), the roll-out of the vaccination started slowly in December 2020 due to limited vaccine supply. While the first and second doses were well-accepted among adults and vaccine uptake was above 90%, in late 2021 and 2022, vaccine acceptance decreased for children vaccination and receipt of a 3rd or a 4th dose. In the autumn of 2022, four focus groups were conducted with vaccine-hesitant parents of children aged 0–4 and adults who expressed little intention to receive a booster dose. The objective of this study was to gather participants’ perspectives on vaccination in general, on the COVID-19 vaccination campaign and the information available, and to gain insights into the underlying reasons for their low intention of either having their child(ren) vaccinated, or receiving an additional dose of vaccine. A total of 35 participants took part in the focus groups. While participants expressed a certain level of trust and confidence in public health and government authorities regarding pandemic management and the vaccination campaign, they were also concerned that transparent information was lacking to support an informed decision on booster doses and children’s vaccination. Many participants felt adequately protected against the infection during the focus groups, citing a lack of perceived benefits as the primary reason for refusing a booster dose. Parents who refused to administer the COVID-19 vaccine to their young children felt that the vaccine was not useful for children and were concerned about potential side effects. The majority reported that their opinions regarding other recommended vaccines had not changed since the beginning of the pandemic. While these results are reassuring, our findings highlight the importance of transparency in public health communications about vaccines to increase confidence and to develop strategies to address vaccine fatigue and complacency toward COVID-19 vaccines.
Older adults’ lower-limb muscle power production throughout a full flight of stairs: Reliability and comparison between different stair models
Authors: Meulemans Lien , Van Roie Evelien , Seghers Jan , Delecluse Christophe
Published: February 2024

Lower-limb muscle power should be closely monitored to prevent age-related functional ability declines. Stair-climbing (SC) power is a functionally relevant measurement of lower-limb muscle power. Body-fixed sensors can measure power production throughout the different steps of a flight of stairs to assess different aspects of performance. This study investigated: 1) power production throughout a full flight of stairs; 2) if staircases with less or more steps can provide similar information; and 3) test-retest reliability of SC power. 116 community-dwelling older adults (57 women) ascended three staircases as fast as possible: 12, 6 and 3 steps. Mean vertical power production per step was collected and analyzed using a commercial body-fixed sensor and software. Three phases were found in SC power production: 1) an acceleration phase, i.e., the power produced in step 1 (P1); 2) a phase where the highest performance (Pmax) is reached and; 3) a fatiguing phase with power loss (Ploss; only measurable on 12-step staircase). Mean power (Pmean) over the different steps was also evaluated. P1 did not differ between staircases (all p>0.05), whereas Pmax and Pmean were higher with increasing number of steps (p = 0.073 –p<0.001). P1, Pmax and Pmean were strongly correlated between staircases (r = 0.71–0.95, p<0.05). and showed good to excellent reliability (ICC = 0.66–0.95, p<0.05). Ploss showed poor reliability. To conclude, measurements of SC power production (P1, Pmax and Pmean) with a single sensor on the lower back are reliable across different staircases. A small, transportable, 3-step staircase can be used for measuring power production in clinical practices with no access to regular staircases. However, absolute values are dependent on the number of steps, indicating that measurements to track performance changes over time should always be done using an identical stair model.
Consumers purchase intention in live-streaming e-commerce: A consumption value perspective and the role of streamer popularity
Authors: Zhang Qi , Wang Yuling , Ariffin Shaizatulaqma Kamalul
Published: February 2024

The rapid development of live-streaming e-commerce has driven billions of sales revenues and made customers’ purchase intention a life-and-death issue for sellers. This study examines the influencing factors of customers’ purchase intention from a value perspective by adopting and extending the Theory of Consumption Values (TCV). We also incorporated streamer popularity as a moderating variable to reveal its significant impact on live-streaming e-commerce. This study collected 457 valid online questionnaires from Chinese live-streaming e-commerce users. Our findings show that five of six consumption values, namely functional, social, emotional, conditional, and self-gratification value, are significant drivers of purchase intention. In addition, streamer popularity has strengthened the influence of functional, social, emotional, and self-gratification value on purchase intention. This study deepens the current understanding of live-streaming and customer value research by establishing and validating a comprehensive research model, and reveals the decisive role of multi-dimensional value and streamer popularity in live-streaming industry. The research findings could guide live-streaming merchants to increase sales by reallocating their resources to different consumption values and optimising their investment strategy in popular streamers.
One and the same? How similar are basic human values and economic preferences
Authors: Scharfbillig Mario , Cieciuch Jan , Davidov Eldad
Published: February 2024

Both the basic human values approach and the economic preference approach have been developed and applied to represent fundamental drivers of human behavior in various domains by measuring people’s underlying preferences and motivations. Both of them have been used, however, in isolation from each other, the former primarily in social psychology studies and the latter mainly in economic studies. But how similar are they? Finding that they differ may suggest that combining them to explain human behavior might be beneficial. To the best of our knowledge, only a few studies have attempted to explore and empirically examine the theoretical and empirical link between variables in both approaches. The current study tries to fill this gap by examining relations between basic human values and major economic preferences. We examine the associations between the values of self-transcendence, self-enhancement, openness to change and conservation, and the economic preferences of risk aversion (or seeking), altruism, trust, and positive and negative reciprocity. We propose mechanisms as to how they may be associated with one another. For example, we expect an association between conservation and risk aversion as both are motivated by attributing importance to stability and the status quo, or between self-transcendence and altruism, as both are motivated by concern for others. For the empirical analysis we employed convenience samples collected in Poland and Germany. Results in both samples support our expectations: several values and economic preferences are linked in theoretically predictable ways, but only to a weak or moderate extent. We conclude that they are not mutually exclusive but may rather be complementary, and therefore likely both relevant for investigations into explaining behavior.
Analyzing public demands on China’s online government inquiry platform: A BERTopic-Based topic modeling study
Authors: Tang Zhuoyuan , Pan Xuan , Gu Zhouyi
Published: February 2024

This study aims to enhance governmental decision-making by leveraging advanced topic modeling algorithms to analyze public letters on the "People Call Me" online government inquiry platform in Zhejiang Province, China. Employing advanced web scraping techniques, we collected publicly available letter data from Hangzhou City between June 2022 and May 2023. Initial descriptive statistical analyses and text mining were conducted, followed by topic modeling using the BERTopic algorithm. Our findings indicate that public demands are chiefly focused on livelihood security and rights protection, and these demands exhibit a diversity of characteristics. Furthermore, the public’s response to significant emergency events demonstrates both sensitivity and deep concern, underlining its pivotal role in government emergency management. This research not only provides a comprehensive landscape of public demands but also validates the efficacy of the BERTopic algorithm for extracting such demands, thereby offering valuable insights to bolster the government’s agility and resilience in emergency responses, enhance public services, and modernize social governance.
Impacts of hurricanes and disease on Diadema antillarum in shallow water reef and mangrove locations in St John, USVI
Authors: Godard Renee D. , Wilson C. Morgan , Amstutz Caleb G. , Badawy Natalie , Richardson Brittany
Published: February 2024

The 1983–1984 mortality event of the long-spined sea urchin Diadema antillarum reduced their population by up to 99% and was accompanied by a phase shift from coral dominated to algal dominated reefs in the Caribbean. Modest rebounds of D. antillarum populations in the Caribbean have been noted, and here we document the impacts of two major hurricanes (2017, Irma and Maria) and the 2022 disease outbreak on populations of D. antillarum found by targeted surveys in the urchin zone at nine fringing reef and three mangrove sites on St. John, USVI. D. antillarum populations at the reef sites had declined by 66% five months after the hurricanes but showed significant recovery just one year later. The impact of recent disease on these populations was much more profound, with all reef populations exhibiting a significant decline (96.4% overall). Fifteen months after the disease was first noted, D. antillarum at reef sites exhibited a modest yet significant recovery (15% pre-disease density). D. antillarum populations in mangrove sites were impacted by the hurricanes but exhibited much higher density than reef sites after the disease outbreak, suggesting that at D. antillarum in some locations may be less vulnerable to disease.
Factors influencing gestational diabetes self-care among pregnant women in a Syrian Refugee Camp in Jordan
Authors: Assaf Enas A. , Al Sabbah Haleama , Momani Aaliyah , Al-Amer Rasmieh , A. Al-Sa’ad Ghada , Ababneh Anas
Published: February 2024

Aim

The main objective of this study is to identify the level of self-care practices and the determinants of Gestational Diabetes Mellitus (GDM) among pregnant women residing in one of the refugee camps in Jordan.

Method

A cross-sectional study was conducted on a convenient sample of forty women diagnosed with GDM from the high-risk maternity clinic in one of the Syrian refugee camps in Jordan. The study used the Gestational Diabetes Management Self-Efficacy Scale (GDMSES), Diabetes Knowledge (DMK) assessment, and Diabetes Self-Care Activities Questionnaire (SDSCA) to measure the variables of interest. Descriptive analysis and Multiple logistic regression were used to assess for significant factors.

Results

Significant associations were found between the subcategories of diet, exercise, and blood sugar control in both the self-efficacy and self-activity scales (p < 0.01, p < 0.01, p < 0.05), respectively. Two factors were associated with higher GDM self-care: diabetes knowledge and higher self-efficacy toward GDM self-care (p < 0.05).

Conclusion

The findings of this study highlight that pregnant women with GDM who have higher levels of self-efficacy and diabetes knowledge are more likely to achieve higher levels of GDM self-care. Beside developing health promotion programs to enhance women’s self-efficacy in adhering to GDM care, adequate support and relevant resources to facilitate GDM management among refugee women are recommended. Future research for identifying other potential factors affecting GDM self-care among refugees is highly recommended.
Finite blocklength feedback approach for multi-antenna wireless channels
Authors: Huang Qiang , Song Tao
Published: February 2024

Ultra-reliable low-latency communication (URLLC) is a key technology in future wireless communications, and finite blocklength (FBL) coding is the core of the URLLC. In this paper, FBL coding schemes for the wireless multi-antenna channels are proposed, which are based on the classical Schalkwijk-Kailath scheme for the point-to-point additive white Gaussian noise channel with noiseless feedback. Simulation examples show that the proposed feedback-based schemes almost approach the corresponding channel capacities.
Representation of intersectional and cultural identities in Taiwanese-language port city cinema
Authors: Rawnsley Ming-Yeh T. , Moss-Wellington Wyatt , Loo Yat Ming
Published: February 2024

This article contributes to two relatively under-researched areas in the existing literature of Taiwanese popular culture and film studies – Taiwanese-language films (taiyupian) and port city cinema. We compare five case studies in Taiwanese-language port city cinema: Anping zhuixiang qu (Nostalgic Song of Anping) (Chen Yang 1969), Huilai anping gang (Back to Anping Harbor) (Wu Feijian 1972), Fenggui lai de ren (The Boys from Fengkuei) (Hou Hsiao-Hsien 1983), Haijiao qi hao (Cape No.7) (Wei Te-Sheng 2008) and角頭 Jiao tou (Gatau) (Li Yunjie 2015). Across each case, we analyse how the cinematic representation of port cities may have reflected social and cultural developments, changing (and unchanged) Taiwanese intersectional and cultural identities from the 1960s to the twenty-first century.
Hezkuntza premia bereziak eta gorputz hezkuntza
Authors: Zuazagoitia Rey-Baltar Ana , Eguiluz Ibarguren Mikel
Published: February 2024

Duela urte askotatik premiazko erantzun bat behar da ikasle-aniztasunari arreta egoki bat eman ahal izateko. Gaur egungo eskola arruntaren antolakuntza zurrunetik kanpo geratzen diren ikasleak daudela hauteman daiteke: Hezkuntza Premia Bereziak (HPB) dituzten ikasleak hain zuzen ere. Gainera, bereizketa hau agerikoagoa bihurtzen da Gorputz Hezkuntzako irakasgaian. Gorputz Hezkuntzak duen heziketa potentzialtasun izugarria kontuan izanik, are gehiago HPBak dituzten ikasleengan, haur guztiek kalitatezko hezkuntza jasotzen dutela ziurtatzeko Gorputz Hezkuntza inklusibo baten beharra babestu behar da. Horretarako, irakasleen gaitasun profesionala eta jarrera positiboa izan behar dira abiapuntuak. Hortaz, azterlan honetan, Gorputz Hezkuntzako irakasleei zuzendutako galdetegi baten bitartez, HPBen aurrean Oarsoaldeko irakasleen egoera aurkezten da: aurretiko ezagutza eta jarrera, formakuntza, lan egoera eta abar. Galdetegian lortutako emaitzetatik ondorio nagusi batzuk lortu dira: Oro har, HPBetarako eta inklusiorako jarrera ona, ezagutza urria eta prestakuntza gutxi dagoela eta HPBak dituzten ikasleen inklusio egoki eta osoa eman dadin, lankidetzan lan egitea ezinbestekoa bihurtzen dela: Administrazioa, ikastetxea, irakaslea, familia…
Gastronomy as a tool for rural tourism development - the case of Casa Carnasciali Winery
Authors: Lopes Thiago Henrique , Klein Wagner Lopes , Fontana Rosislene de Fatima
Published: February 2024

This paper focuses on the development of sustainable rural tourism, considering gastronomy as a tool. It examines the dynamics that occur between tourism and gastronomy, focusing on the valorization of gastronomic traditions and food regionality and highlighting them as motivating elements of tourism. Its specific objective is to analyze the relationship between gastronomy and rural tourism at the Casa Carnasciali Winery and Gardens, located in in Apucarana-Paraná, through the application of a case study. The exploratory-descriptive analysis was based on the concepts of rural tourism and sustainable development and on the relationships between tourism and gastronomy, therefore a case study was the chosen as the most suitable research method. A technical visit was made to the site, to observe the dynamics that occur between gastronomy and rural tourism, and semi-structured interviews were conducted with the owner and the chef responsible for the gastronomic offer of the enterprise. It was found that the offer of gastronomic services on the property helps bring financial sustainability to the business, with impacts on the dissemination of the food culture.
Classification of long-distance trails into nature-based tourism niches:
Authors: Curzel Laura , Bregolin Michel
Published: February 2024

Hiking tourism has intensified in Brazil in recent years. Among the evidence of this process is the creation, in 2018, of the Brazilian Network of Long-Distance Trails (RBT), which brings together trails that require at least one overnight stay to complete their route. Considering the country's potential in this field and the rapid growth of this tourist offer, the research sought to develop and test a methodology to classify these trails according to niches in the nature tourism segment. To this end, it collected data from RBT websites and social media and from the Long-Distance Trails (LDT) of Rio Grande do Sul, as well as applied online questionnaires with managers to identify evidence that would make it possible to associate these trails with certain niches of nature tourism. As a result, it obtained a preliminary classification of the Long-Distance Trails of Rio Grande do Sul in relation to the niches of the nature tourism segment, as well as identified important aspects to be considered for the construction of methodologies with the same purpose.
ENSAIOS EXPERIMENTAIS COM VIGAS DE CONCRETO ARMADO COM BARRAS DE GFRP
Authors: Oliveira Santos Luis Felipe , da Silva Forti Nádia Cazarim , Taissum Cardoso Daniel Carlos
Published: February 2024

As barras de polímero reforçado com fibras (FRP) são materiais compósitos formados pela união de fibras longas com uma matriz polimérica. Elas vêm sendo utilizadas, nas últimas décadas, como armadura para estruturas de concreto por apresentarem boas propriedades mecânicas, um baixo peso específico, características anticorrosivas e transparência eletromagnética. Contudo, esses materiais apresentam baixo módulo de elasticidade e comportamento elástico-linear até a ruptura. As recomendações internacionais e nacionais apresentam duas possibilidades de dimensionamento para estruturas de concreto armado com barras de polímero reforçado com fibras de vidro (GFRP): falha por ruptura das barras ou falha por esmagamento do concreto. O primeiro caso ocorre como consequência do uso de uma baixa taxa de armadura, resultando em altas deformações e aberturas de fissuras em elementos fletidos, bem como colapso frágil. Diante disso, esse artigo tem como objetivo apresentar e analisar o comportamento a flexão de vigas armadas com barras de GFRP dimensionadas pelo critério de falha por tração na barra, fazendo uso da técnica de correlação digital de imagem (DIC) para análise do comportamento à fratura. O uso do DIC apresentou bons resultados, sendo consistentes com os observados experimentalmente. Resultados reforçam a recomendação pelo dimensionamento por esmagamento da região comprimida do concreto.
The Influence of Players Contracts in Sport and Economic Performance of Brazilian Football Clubs
Authors: Minatto Fábio , Alonso Borba José , Alberto Barbetta Pedro
Published: February 2024

Objective: This study analyzes the influence of the representativeness of players’ contracts on financial and sports performance in Brazilian football clubs.
Method: Based on the 2020 Brazilian Football Confederation rank, our sample comprises 29 teams covering the 2011-2021 period. We use the players' contracts registered in the intangible assets as our primary independent variable. We also subdivided this value into professional and young players.
Results and Discussion: Results suggest that most big clubs invest more in professional players while small clubs in young players. Moreover, a higher investment proportion in players' contracts influences financial and sportive performance. This is mostly confirmed by the investment in professional players, whereas the investment in developing young players could not be confirmed.
Contributions: Intangible assets play an important role in the overall success of football clubs, not only from a financial perspective but also in terms of their sporting achievements. This comprehensive study seeks to provide evidence that sheds light on the distinctive relationship between players' contracts and the subsequent impact on both the sporting and financial performance of Brazilian football clubs. Furthermore, it is worth noting that in Brazil, clubs have the unique advantage of being able to capitalize on costs associated with the development of young players, which is a distinctive setting to analyze.
Universidades en red en torno a las prácticas letradas: aportes a la construcción de saberes en el marco de la integralidad de funciones universitarias
Authors: Giammarini Gabriela Luján , Waigandt Diana , Castagno Fabiana , Ávila Ximena
Published: February 2024

Los estudios en torno a las prácticas letradas y/o el campo de las literacidades académicas han proliferado en los últimos 20 años en América Latina y en el mundo. En este marco, se crearon redes y organismos abocados a su desarrollo, entre las cuales se encuentra la Red Argentina de Instituciones Lectoras y Escritoras de Educación Superior. Desde su creación, diversas acciones que vinculan docencia, investigación y extensión se han llevado adelante de manera colegiada. En este artículo se describen acciones de extensión desarrolladas de manera conjunta en el marco de la mencionada Red, reconociendo el rol ineludible de esta función como espacio de formación integral para la producción de conocimiento con otros y en diálogo con la docencia y la investigación.
Evaluación de competencias genéricas en contextos multiculturales y pluriétnicos a través de entornos personalizados de aprendizaje
Authors: Botello Plata Aslin Gonzalo , De los Reyes Navarro Heyner Rafael , Araujo Castellar Linda Sofia
Published: February 2024

Este trabajo de investigación propone un modelo actualmente inexistente de Formación y evaluación de competencias genéricas (Saber Pro) en el ámbito universitario colombiano a través de entornos personalizados de aprendizaje, sobre la base de los planteamientos teóricos en cuanto a la exegesis del aprendizaje y la asignación taxonómica de niveles de complejidad cognitiva ascendente en contextos multiculturales y pluriétnicos, propuesta por SOLO. La muestra de la población objeto de estudio es de 14 000 estudiantes, los cuales cohabitan en el alma máter de la Universidad de La Guajira (Colombia). Se utiliza la encuesta como técnica y el diseño de un instrumento de evaluación por competencia genérica, estructurados en ítems, bloques y cuadernillos. Para analizar las repuestas registradas en los instrumentos se utiliza la Teoría de Respuesta al Ítem (TRI), así como la Estadística Descriptiva para identificar las dificultades específicas más iterativas de los estudiantes tras ser evaluados en las competencias genéricas preestablecidas por el Icfes. Finalmente, las conclusiones infieren la clasificación (taxonómica) ascendente de niveles de complejidad cognitiva al utilizar Entornos Personalizados de Aprendizaje en el proceso de Formación y Evaluación; Educación individualizada al contexto, aptitudes e intereses del discente a través de herramientas de Aprendizaje automático (“Machine learning”).
Modelos mentales y percepciones de desempeño en emprendedores de startups
Authors: Batista da Silva Joenison , León Olave Maria Elena , Rocha Ronalty
Published: February 2024

Los modelos mentales representan la estructuración perceptiva de los gerentes sobre las decisiones que se deben tomar en el ámbito organizacional. Entre los modelos mentales hay de destacar el propuesto por Toni et al. (2014), que definió las dimensiones para la evaluación del desempeño organizacional. En este contexto, esta investigación tuvo como objetivo investigar, desde la perspectiva de los emprendedores de startups, el vínculo entre los modelos mentales y el desempeño organizacional. Se realizó un estudio cualitativo-descriptivo con evidencia obtenida de entrevistas con 5 cinco empresarios brasileños de startups de los estados de Sergipe, Pernambuco, Bahía y Ceará. Se aplicó la técnica de análisis de contenidos y los resultados demostraron que los principales componentes de las dimensiones de los modelos mentales implican, entre otros, conocimientos y experiencias, resiliencia, liderazgo, orientación evolutiva, visión innovadora, asociaciones, crecimiento organizacional y gestión estructurada.
Kulturtransfer zwischen Basel und Polen. Die Universität Basel und die politischen und intellektuellen Eliten in Polen-Litauen in der ersten Hälfte des 16. Jahrhunderts
Authors: Ptaszyński Maciej
Published: February 2024

This article deals with the relations between Basel and Poland in the first half of the 16th century, shown through the paradigm of the cultural transfer. The study claims that, in this period, relations with Erasmus of Rotterdam were far more important than relations with the University of Basel. Moreover, they have gone beyond the history of education. Indeed, Poles who visited Erasmus belonged to the narrow political elite of the kingdom. An analysis of the exchange of correspondence and gifts reveals that these contacts were not only of a cultural nature but also political. The royal court in Cracow used the position and fame of Erasmus to clear itself of favoring the Reformation. These accusations may have arisen in 1525 after the conversion of Grand Master of the Order Albrecht of Prussia which led to the establishment of the first Protestant duchy in Europe. The manipulation of the letter Erasmus sent to King Sigismund of Poland in 1527 proves that the cultural transfer not only went both ways and the “recipients” actively initiated it but also that they were able to creatively manipulate the content of the transfer.
Johann Ulrich Surgantʼs Manuale curatorum predicandi as a product of medieval intellectual heritage in Basel libraries
Authors: Večeře Vojtěch
Published: February 2024

Manuale curatorum predicandi – the treatise on the art of preaching written by Basel scholar Johann Ulrich Surgant in 1502 – is usually classified as a humanist and nearly proto-reformation work. The paper disputes this classification; it provides several analytical textual probes to show the deep dependence of the Manuale curatorum on the older scholastic tradition. Following on from former research, a few relatively well-known high and late medieval artes praedicandi are identified as the main sources of Surgantʼs writing. Moreover, the study aims to trace specific manuscripts or early prints in Basel libraries, which could have been directly used by the author-compiler.
On the Importance of Basel Prints for the Czech Lands
Authors: Boldan Kamil
Published: February 2024

This contribution evaluates the importance of Basel-made prints for the Czech Lands based mainly on quantitative data. It also traces the representation of Basel prints produced from the end of the 15th until early 17th century in large historical collections in the Czech Republic and analyses their relative proportion in the libraries of intellectual elites. In the second part, the author tries to determine the proportion of Basel prints in the reconstructed core of the Carolinum library, which survives in collections of the current National Library of the Czech Republic.
Heike Hawicks – Ingo Runde (Hgg.), Universitätsmatrikeln im deutschen Südwesten. Bestände, Erschließung und digitale Präsentation. Beiträge zur Tagung im Universitätsarchiv Heidelberg am 16. und 17. Mai 2019
Authors: Brčák Marek
Published: February 2024

Book review on Heike Hawicks – Ingo Runde (Hgg.), Universitätsmatrikeln im deutschen Südwesten. Bestände, Erschließung und digitale Präsentation. Beiträge zur Tagung im Universitätsarchiv Heidelberg am 16. und 17. Mai 2019 Heidelberger Schriften zur Universitätsgeschichte, Band 9, Universitätsverlag Winter GmbH Heidelberg, Heidelberg 2020, 434 S., ISBN 978-3-8253-4726-0
The seamlessness of grammatical innovation: the case of be going to (revisited)
Authors: Dietrich Nadine
Published: February 2024

In this paper, I revisit the continued debate surrounding manner of grammatical innovation, i.e. whether it is abrupt or gradual. I show that the debate is complicated by different diagnostics for manner and argue that it is best understood in terms of degree of similarity (how similar the innovative use is to existing uses of a construction). However, even when adopting degree of similarity as a diagnostic, approaches differ with regards to how similar they find innovative and existing uses. The gradualness account argues that innovative uses are similar but distinct from existing uses, as they imply a new form-meaning pairing. A seamlessness account instead argues that innovative and existing uses are so similar that no new form-meaning pairing is required. I develop seamlessness into a theoretical position for semantic innovation in grammaticalization, which holds that grammatical innovations are maximally similar to existing uses i.e. they exhibit considerable conceptual overlap and the existing use is semantically underspecified. Seamlessness is empirically tested using semantic innovations in be going to as a case study.
Monitoring of mangrove forests vegetation based on optical versus microwave data: A case study western coast of Saudi Arabia
Authors: Aljahdali Mohammed H. , Adisu Baradin , Adem Esubalew , Chaabani Anis , Boteva Silvena , Zhang Lifu , Elhag Mohamed
Published: February 2024

Normalized difference vegetation index (NDVI) is one of the parameters of vegetation that can be studied by remote sensing of land surface with Sentinel-2 (S-2) satellite image. The NDVI is a nondimensional index that depicts the difference in plant cover reflectivity between visible and near-infrared light and can be used to measure the density of green on a piece of land. On the other hand, the dual-pol radar vegetation index (DpRVI) is one of the indices studied using multispectral synthetic aperture radar (SAR) images. Researchers have identified that SAR images are highly sensitive to identify the buildup of biomass from leaf vegetative growth to the flowering stage. Vegetation biophysical characteristics such as the leaf area index (LAI), vegetation water content, and biomass are frequently used as essential system parameters in remote sensing data assimilation for agricultural production models. In the current study, we have used LAI as a system parameter. The findings of the study revealed that the optical data (NDVI) showed a high correlation (up to 0.712) with LAI and a low root-mean-square error (0.0296) compared to microwave data with 0.4523 root-mean-square error. The NDVI, LAI, and DpRVI mean values all decreased between 2019 and 2020. While the DpRVI continued to decline between 2020 and 2021, the NDVI and LAI saw an increase over the same period, which was likely caused by an increase in the study area’s average annual rainfall and the cautious stance of the Red Global (RSG) project on sustainability.
Room temperature polaritonic soft-spin XY Hamiltonian in organic–inorganic halide perovskites
Authors: Peng Kai , Li Wei , Berloff Natalia G. , Zhang Xiang , Bao Wei
Published: February 2024

Exciton–polariton condensates, due to their nonlinear and coherent characteristics, have been employed to construct spin Hamiltonian lattices for potentially studying spin glass, critical dephasing, and even solving optimization problems. Here, we report the room-temperature polariton condensation and polaritonic soft-spin XY Hamiltonian lattices in an organic–inorganic halide perovskite microcavity. This is achieved through the direct integration of high-quality single-crystal samples within the cavity. The ferromagnetic and antiferromagnetic couplings in both one- and two-dimensional condensate lattices have been observed clearly. Our work shows a nonlinear organic–inorganic hybrid perovskite platform for future investigations as polariton simulators.
Transport of radioactive materials from terrestrial to marine environments in Fukushima over the past decade
Authors: Fan Shaoyan , Nasu Koki , Takeuchi Yukio , Fukuda Miho , Arai Hirotsugu , Taniguchi Keisuke , Onda Yuichi
Published: February 2024

While 20 % of radionuclides released from the Fukushima Daiichi Nuclear Power Plant accident had been deposited in the terrestrial environment, rivers remain the long-term source for 137Cs, primarily through particulate transfer, from terrestrial to marine ecosystems. In this study, we estimated the suspended 137Cs flux to the ocean at 11 sites in the coastal area between October 2012 and December 2020 to be 17 TBq, based on our long-term monitoring data of concentrations of suspended 137Cs and suspended solids. The cumulative loss of suspended 137Cs from each site to the ocean ranged from 0.1 % to 1.7 % of initial deposition throughout the observation period, depending on the effect of dam lakes and normalized river discharge. The higher loss is also thought to be the large outflow of runoff during the typhoon. The current level of the suspended 137Cs concentrations was lowered to 1/10–1/100 of those immediately after the accident. The average value of the decreasing trend for each site was approximated using the equation: y = a1 e −k
1
t + a2 e −k
2t. The rate constant k
1 is higher in areas with intensive land use, such as pastures, bare land, and water surfaces, and k
2 is lower in urban areas.
Greenness of dispersive microextraction using molecularly imprinted polymers
Authors: Tadić Tamara , Marković Bojana , Bulatović Sandra , Lukić Jelena , Radulović Jelena , Nastasović Aleksandra , Onjia Antonije
Published: February 2024

Molecularly imprinted polymers (MIPs) as materials with determined levels of selectivity and specificity for designated analytes have recently gained much attention in various application fields. However, with the growing adoption of green analytical chemistry (GAC) principles, it is essential to investigate the greenness of MIP synthesis and its subsequent application in sample preparation, as well as to evaluate the “green” nature of the developed analytical methodologies, such as dispersive solid-phase microextraction (DSPME). Accordingly, the main objective of this research was to evaluate the greenness of MIP-based glycidyl methacrylate synthesis and MIP use as a DSPME sorbent prior to high-performance liquid chromatography with mass spectrometry (HPLC-MS). The green perspective of MIP-DSPME prior to HPLC-MS was investigated using various analytical metric tools such as the Analytical Eco-Scale, the Green Analytical Procedure Index, and Analytical GREEnness (AGREE). Since these analytical tools are not fully implementable for the assessment of the greenness of the MIP synthesis, some alternative approaches were used to optimize the synthesis parameters to make the MIP DSPME sorbent as close as possible to the GAC principles. The calculated AGREE score (0.62) and 91 points in the Analytical Eco-Scale for the proposed DSPME technique using MIP indicated a high level of greenness.
Unveiling the multifaceted roles of protonated 1,2-bis(4-pyridyl)ethylene (HBpe+) ligand in metal-driven supramolecular assembly: a comprehensive structural review
Authors: Singha Debabrata , Datta Pritha , Halder Sasthi Charan , Jana Atish Dipankar , Pal Nilasish
Published: February 2024

A protonated form of 1,2-bis(4-pyridyl)ethylene (HBpe+), produced through proton transfer or pH adjustments, plays a significant role in forming unique supramolecular structures. In contrast, non-protonated forms of the molecule (Bpe) are extensively studied in metal-organic complexes. In this review, we examine the fascinating world of HBpe+ as a monodentate ligand in the realm of coordination chemistry. It discusses how protonated ligands influence the assembly of supramolecular structures, as well as their properties and functions. Structures such as 1:1 adduct, coordination polymers, and metal clusters are often formed as a result. In these assemblies, HBpe+ engages in a variety of interactions that influence its supramolecular behavior. The interactions include coordination complexes with metal ions, hydrogen bonds, aromatic ring stacking, and double bond stacking (π⋯π stacking). The flexibility and conformation of the ligand have a significant impact on the overall structure and stability of complexes. It opens the door to developing functional materials by unraveling the unique attributes and role of HBpe+ in supramolecular assembly. With these insights, it is possible to explore the functional properties of HBpe+ through controlled assembly processes in order to create innovative and functional materials.