bluuebunny/crossref_metadata_2025 huggingface dataset:
Value at Risk Analysis for Asset Acquisition Investment Needs Process Using Monte Carlo Method Based on Asset Return Level
Authors: Nugroho Catur Arie , Zulfialda Dennis Hasnan , Malasan Hakim Luthfi
Published: February 2025

This study aims to determine the Value at Risk (VaR) analysis process in measuring the maximum level of losses that can be accepted in the investment process to acquire assets that are already operating. An investment program must be able to measure the risks that will be faced in the future so that the VaR analysis. This study uses a quantitative approach through secondary data. The techniques used are data preprocessing scaling techniques, correlation between features and forecasting modeling through linear and non-linear regression mechanisms through repeated simulations (Monte Carlo). The research method for this VaR analysis uses several features from historical data with a probability level of 95%. From the results of the simulation of VaR, a prediction was obtained for the next 3 years, investors will not suffer losses, so that the profit obtained is $ 25 million from the estimated asset return value of 1.3% with a Mean Squared Error (MSE) value of 0.13. Based on the weighting results, it was also found that the asset value volatility parameter has the largest weight that affects the VaR value.
Grupo “Diálogos De Paz”:
Authors: Mourão Thais Helena Ramos Queiroz , Batista Kevin Samuel Alves
Published: February 2025

O artigo reflexiona, a partir da experiência do grupo reflexivo “Diálogos de Paz”, realizado em São Gonçalo do Amarante - CE, em 2019, as possibilidades e os desafios na atuação grupal junto a homens autores de violência (HAV) contra as mulheres. O texto abrange o histórico de estudos, trabalhos e intervenção nesta temática, e debate os referenciais teóricos utilizados entre eles. Em uma perspectiva exploratória qualitativa, versa sobre o grupo sob análise como proposta promotora de espaços problematizadores da relação entre violência e masculinidades. Assim, verifica-se aproximações entre o método adotado na experiência com o aporte construtivista-narrativista com perspectiva de gênero. Constata-se, então, que o espaço produziu abordagem de compreensão integral dos homens participantes, não os limitando a seus atos violentos. Feitas as análises, considera-se fundamental abordar tal temática de forma preventiva, potencializando uma atuação intersetorial, que amplie o debate de gênero pelos diversos âmbitos formativos sociais.
Revisitar o passado para criar o futuro:
Authors: Fernandes Taffarel Ramires
Published: February 2025

O presente trabalho analisa o artigo “Social Psychology as History”, publicado em 1973 por Kenneth Jay Gergen, dando ênfase aos seus principais argumentos, ao contexto de publicação e às repercussões na psicologia social norte-americana e brasileira. Por meio de levantamento bibliográfico, em um primeiro momento, apresentamos os elementos constituintes do período de crise na psicologia social nos anos 1970 e em seguida trazemos as duas linhas de argumento do referido autor. Problematizamos a quem suas críticas se direcionavam, ou seja, quem ele tinha por interlocutor, qual veículo de comunicação utilizou e como foram as primeiras reações a ele nos EUA e no Brasil. Concluímos que, mesmo encontrando dificuldades no meio acadêmico dominante na psicologia social à época, Gergen conseguiu difundir suas reflexões e contribuir para o fortalecimento do movimento Construcionista.
“Perrengues e Milagres: Construindo nossa história longe do país de origem”:
Authors: Mofarrej Graziela Jones Caccavale , Costa Maria Fernanda Teixeira da , Leifert Maria Gabriela Mantaut , Carmona Maria Luiza Moreno , Joveleviths Olga , Paschoal Valeria Nicolau
Published: February 2025

Este trabalho foi realizado durante a pandemia de COVID-19 com intuito de acolher jovens brasileiros vivendo no exterior, longe de suas famílias de origem em um momento de profundas incertezas. Neste cenário, nós da Sanga 8 (equipe formada por um grupo de facilitadoras de relações humanas) desenvolvemos um trabalho com pessoas residindo em diversos países ao redor do mundo como expatriados ou por livre iniciativa. Em plena pandemia, essas pessoas se sentiam angustiadas não só pelo isolamento decorrente das restrições impostas pelos governos locais, como também pelo afastamento e pela preocupação com seus entes queridos e a nação que deixaram para trás, berço de suas raízes. Como profissionais comprometidas com a escuta atenta, curiosidade, criatividade e crença na colaboração e no diálogo para a construção de contextos generativos, nos utilizamos de princípios da Psicologia Intercultural, dentro do paradigma do Construcionismo Social. A metodologia utilizada teve como base a Investigação Apreciativa. Este trabalho foi realizado através da plataforma Zoom que possibilitou os encontros virtuais. Mesmo à distância, o processo mostrou-se transformador. Ao final dos encontros, colhemos depoimentos emocionantes de validação do método e dos propósitos. Ao apresentá-lo, intencionamos contribuir para o desenvolvimento e o foco nos recursos individuais e coletivos em momentos de adversidade como o que passaram esses jovens durante os primeiros anos de pandemia.
Ciclo gravídico puerperal e Cuidados Perinatais na perspectiva de homens-pais
Authors: Magalhaes Raphaella Stephannie Rosa , Lima Flávio Lúcio Almeida
Published: February 2025

O propósito deste estudo foi investigar a participação e a percepção dos homens no ciclo gravídico-puerperal e nos cuidados perinatais. A amostra incluiu 11 pais, cujos filhos tinham mais de 1 ano de idade. A pesquisa foi de cunho qualitativo e utilizou um questionário sociodemográfico e uma entrevista semiestruturada como instrumentos de coleta de dados. A análise dos dados seguiu a Análise Categorial Temática de Rissi et al. (1993). Os resultados mostram uma mudança positiva no papel paterno, com foco em cuidado e afeto. No entanto, os pais revelaram falta de conhecimento sobre violência obstétrica e direitos reprodutivos, não se vendo como sujeitos com direitos nesses contextos. Isso indica que, apesar de uma maior participação masculina no processo reprodutivo, barreiras tradicionais ainda afetam seu entendimento sobre essas questões. Portanto, é necessário fornecer apoio profissional e orientação específica para capacitar os pais no ciclo gravídico-puerperal.
Analysis of the Gap Between the Polri Almatsus Blueprint and Operational Needs in the Meta-Globalization Era
Authors: Prabowo Dikie , Nita Surya , Gani Yopik
Published: February 2025

This creates new challenges for security institutions, including the Indonesian National Police (Polri), which are required to adjust their strategies, tactics, and special equipment (Almatsus) to address various threats and operational demands in this highly dynamic era. This study aims to analyze the factors causing the gap between the planning of special equipment (Almatsus) by Polri and the needs in the field in facing global challenges, as well as to analyze the impact of the gap between the Almatsus Blueprint and the reality of operational needs on the effectiveness of Polri's performance in maintaining security and order in the era of meta-globalization. This research employs a qualitative research method, using strategic management theory as the analytical lens. The findings reveal that the gap between the planning and needs of Polri’s special equipment (Almatsus) is caused by external factors, such as technological advancements and the dynamics of modern crime, as well as internal factors, including a lack of coordination, limited human resources, and inflexible planning. This results in a mismatch between what is planned and operational realities, negatively impacting Polri's effectiveness in maintaining security, especially in the era of meta-globalization. This gap can decrease operational effectiveness, personnel morale, and institutional image, as well as result in material losses due to inappropriate procurement.
Silver nanoparticles produced from Agropyron repens: A green synthesis approach and antimicrobial analysis
Authors: Inam Aysegul , Ozel Nihal , Gunay Zulal , Elibol Murat
Published: February 2025

The plant Agropyron repens is invasively distributed both in natural grassland areas and in agricultural areas. It contains valuable metabolites such as carbohydrates, phenolic compounds, flavonoids, saponins, essential oils, and minerals. A. repens plant extract has the potential as an alternative source for nanoparticle synthesis. The total phenolic and carbohydrate contents of the aqueous extract were analyzed using spectrophotometric methods. Silver nanoparticles (AgNPs) were synthesized at room temperature using the aqueous extract of A. repens without any chemical stabilizer or reducing agent. The formation of AgNPs was confirmed by the observed color change. UV-Vis spectroscopy, dynamic light scattering (DLS), Fourier transform infrared spectroscopy, and X-ray diffraction were used for characterization. An absorption was obtained in the UV-Vis spectrum. In DLS measurements, the size of AgNPs was determined to be approximately 75 nm. The obtained AgNPs and fabrics treated with these nanoparticles showed antibacterial activity against both gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) bacteria. AgNPs and fabric samples exhibited antifungal activity against Candida albicans. In addition, the antioxidant activities of aqueous extracts and AgNPs were evaluated. This study highlights that A. repens can be used in the production of AgNPs by green synthesis methods.
Can talent allocation drive transformation and upgrading of export trade through technological innovation under low-carbon background
Authors: Kong Dan-Dan , Jin Ze-Hu , Wang Rong
Published: February 2025

Under the low-carbon background, regional talent allocation and transformation and upgrading of export trade are all important issues of common concern among academic circles in the stage of sustainable economic and environmental development. This paper explores talent allocation’s impact on the transformation and upgrading of export trade. Based on the results, the improvement in regional talent allocation level has significantly increased the percentage of regional general trade exports. It is conducive to the trans- formation and upgrading of export trade, and such an influence also shows the nonlinear characteristic of increasing “marginal effect”. This conclusion still stands after a series of robustness tests. According to the influencing mechanism test results, the technological innovation brought by the improvement in regional talent allocation level is an important transmission channel for such improvement to facilitate the transformation and upgrading of export trade. Based on the multi-dimensional analysis of the results of transformation and upgrading of export trade, regional talent allocation has significantly enhanced the complexity of exported technologies and actively promoted innovation among exporters. The research provides important inspiration for further promoting the structural reform of regional talent allocation and facilitating the transformation and upgrading of export trade patterns.
First published online 12 February 2025
Minute-cadence Observations of the LAMOST Fields with the TMTS. VI. Physical Parameters of Contact Binaries
Authors: Xia Qiqi , Wang Xiaofeng , Li Kai , Gao Xiang , Guo Fangzhou , Lin Jie , Liu Cheng , Mo Jun , Peng Haowei , Liu Qichun , Xi Gaobo , Yan Shengyu , Jiang Xiaojun , Zhang Jicheng , Song Cui-Ying , Shi Jianrong , Ma Xiaoran , Xiang Danfeng , Li Wenxiong
Published: February 2025

With the development of wide-field surveys, a large amount of data on short-period W UMa contact binaries have been obtained. Continuous and uninterrupted light curves as well as high-resolution spectroscopic data are crucial in determining the absolute physical parameters. Targets with both TMTS light curves and LAMOST medium-resolution spectra were selected. The absolute physical parameters were inferred with the W-D code for 10 systems, all of them are W-type shallow or medium contact binaries. The O'Connell effect observed in the light curves can be explained by adding a spot on the primary or secondary component in the models. According to O − C analysis, the orbital periods exhibit a long-term increasing or decreasing trend, among which J0132, J1300, and J1402 show periodic variations that may be attributed to the presence of a third body or magnetic activity cycles. Spectral subtraction analysis revealed that the equivalent width of Hα indicates strong magnetic activity in J0047, J0305, J0638, and J1402. Among the 10 selected binary systems, except for J0132 and J0913, the more massive components are found to be main-sequence stars while the less massive components have evolved off the main sequence. In J0132, both components are in the main sequence, whereas both components of J0913 lie above the terminal-age main sequence. Based on the relationship between orbital angular momentum and total mass for these two systems, as well as their low fill-out factors, it is possible that these two systems are newly formed contact binaries, having recently evolved from the detached configuration.
Disk in the Circumstellar Envelope of Carbon Mira V Cygni
Authors: Safonov Boris S. , Zheltoukhov Sergey G. , Tatarnikov Andrey M. , Strakhov Ivan A. , Shenavrin Victor I.
Published: February 2025

Asymptotic giant branch (AGB) stars are the primary source of dust and complex molecules in the interstellar medium. The determination of outflow parameters is often hindered by the unknown geometry of the circumstellar environment, creating a demand for high-angular resolution observations. We use our near-infrared spectra and photometry of the carbon AGB star V Cyg, along with literature data, to construct its spectral energy distribution over a wide range of wavelengths. The dust envelope responsible for the infrared excess was also resolved in scattered polarized light at angular scales of 50–80 mas using differential speckle polarimetry. We present an interpretation of the thermal and scattered radiation of the dust using models of a spherical dusty outflow (M
dust = 5.3 × 10−7
M
⊙) and an inclined equatorial density enhancement, either in the form of a disk (M
dust = 7.6 × 10−3
M
⊕) or a torus (M
dust = 5.7 × 10−3
M
⊕), which material is concentrated at stellocentric distances less than 25 au. The dust material consists of amorphous carbon and SiC, with 84% of the dust being amorphous carbon. Dust particle radii range from 5 to 950 nm and follow a power law with an exponent of −3.5. Modeling the envelope allowed us to improve the accuracy of stellar luminosity estimations: 21,000L
⊙ and 8300L
⊙ at maximum and minimum brightness, respectively. The relation between the disk and the high water content in the envelope is also discussed.
Solar Variability in the Mg ii h and k Lines
Authors: Sowmya K. , Snow M. , Shapiro A. I. , Krivova N. A. , Chatzistergos T. , Solanki S. K.
Published: February 2025

Solar irradiance and its variations in the ultraviolet (UV) control the photochemistry in Earth's atmosphere and influence Earth's climate. The variability in the Mg ii h and k core-to-wing ratio, also known as the Mg ii index, is highly correlated with the solar UV irradiance variability. Because of this, the Mg ii index is routinely used as a proxy for solar UV irradiance variability, which can help to get insights into the influence of solar UV irradiance variability on Earth's climate. Measurements of the Mg ii index, however, have only been carried out since 1978 and do not cover climate-relevant timescales longer than a few decades. Here we present a model to calculate the Mg ii index and its variability based on the well-established Spectral And Total Irradiance REconstruction (SATIRE) model. We demonstrate that our model calculations yield an excellent agreement with the observed Mg ii index variations, both on the solar activity cycle and on the solar rotation timescales. Using this model, we synthesize the Mg ii index time series on climate-relevant timescales of decades and longer. Here we present the time series of the Mg ii index spanning nearly three centuries.
The Secondary Component of the Extremely Low Mass Ratio Massive Binary HD 165246 Revealed by GHOST
Authors: Rodriguez C. N. , Ansin T. , Ferrero G. A. , Benvenuto O. G. , Gamen R. , Morrell N. I. , Arias J. I. , Higa R. E. , Putkuri C. , Johnston C. , Chiboucas K. , Deibert E. , Hayes C. R. , Heo J.-E. , Jeong M. , Kalari V. , Martioli E. , Placco V. M. , Venn K. A. , Xu S. , Diaz R. , Gomez-Jimenez M. , Ruiz-Carmona R. , Simpson C. , McConnachie A. W. , Pazder J. , Burley G. , Berg T. A. M. , Robertson J. G. , Labrie K. , Thomas-Osip J.
Published: February 2025

In the pursuit of understanding the multiplicity of massive stars, the OWN Survey has undertaken spectroscopic monitoring of hundreds of targets over the past 20 yr. This effort has led to the discovery of new single-lined spectroscopic binaries. Characterizing the unseen companions of these systems is crucial to deriving precise stellar parameters, including the mass of each component, and constraining formation models for massive binary systems. In this paper, we aim to physically and evolutionarily characterize the stellar components of the massive binary HD 165246. We analyzed spectra obtained by the OWN Survey and used Kepler's second mission (K2) photometry, from which we determined the physical parameters of the system. Thanks to the high-resolution capabilities of the new echelle spectrograph Gemini/GHOST, we could directly detect spectral features of the secondary component for the first time. A very low mass ratio for the system is confirmed (q ~ 0.16), making this binary one of the few extremely low mass ratio systems known. The primary star has a mass of M
a = 22 ± 1 M
⊙ and a radius of R
a = 7.0 ± 0.1 R
⊙, while the secondary star has a mass of M
b = 3.4 ± 0.1 M
⊙ and a radius of R
b = 2.22 ± 0.02 R
⊙. Stellar evolution models indicate that the system has undergone approximately two million years of evolution since its formation. Moreover, the secondary star is identified as a pre-main-sequence object, progressing toward the zero-age main sequence. This paper illustrates the power of high-resolution spectrographs such as GHOST in finding much lower mass, previously unseen stellar components of binary star systems.
Toward High-order Solar Corona Simulations: A High-order Hyperbolized Poisson Approach for Magnetic Field Initialization
Authors: Dhib Rayan , Ben Ameur Firas , Sharma Vatsalya , Lani Andrea , Poedts Stefaan
Published: February 2025

Proper initialization of the solar corona magnetic field is important for easing the iterative process of realistic and efficient global magnetohydrodynamics (MHD) simulations. This study introduces a high-order flux reconstruction (FR) framework for solving the Poisson equation, a necessary step for computing a potential-field source-surface (PFSS) to initialize the magnetic field for global solar corona simulations with MHD. By hyperbolizing the elliptic Poisson equation into a set of hyperbolic equations, we develop an efficient and robust high-order PFSS solver. Our contributions include developing a Q2 (i.e., quadratic) geometrical representation using prismatic elements for the computational domain, which enables high-order mesh generation. Such a hyperbolized Poisson solver effectively relaxes magnetic fields extrapolated from solar magnetograms, producing scalar potential fields that align well with theoretical expectations. Extensive verification was conducted on the high-order FR solver for polynomial orders up to P3, achieving fourth-order spatial accuracy. The hyperbolized solver demonstrates comparable accuracy to reference solutions (both analytical and numerical) while offering efficient performance, particularly on coarser meshes, making it competitive with state-of-the-art low-order finite volume solvers, which are mostly used for solar MHD simulations. The described developments are a milestone for enabling high-order global solar corona simulations on 3D unstructured grids.
ASKAP Observations of the Radio Shell in the Composite Supernova Remnant G310.6-1.6
Authors: Jing Wenhui , West Jennifer L. , Sun Xiaohui , Raja Wasim , Li Xianghua , Dang Lingxiao , Zhou Ping , Filipović Miroslav D. , Hopkins Andrew M. , Kothes Roland , Lazarević Sanja , Leahy Denis , Lenc Emil , Ma Yik Ki , Van Eck Cameron L.
Published: February 2025

We report the observations of the radio shell of the supernova remnant (SNR) G310.6–1.6 at 943 MHz from the Evolutionary Map of the Universe (EMU) and the Polarization Sky Survey of the Universe’s Magnetism (POSSUM) surveys by using the Australian Square Kilometre Array Pathfinder (ASKAP). We detect polarized emission from the central pulsar wind nebula (PWN) with rotation measures varying from –696 rad m−2 to –601 rad m−2. We measure the integrated flux density of the shell to be 36.4 ± 2.2 mJy at 943 MHz and derive a spectral index of α
pwn = −0.4 ± 0.1 for the PWN and α
shell = −0.7 ± 0.3 for the SNR shell. From the combined radio and X-ray observations, the object can be identified as a supernova explosion of about 2500 yr ago with an energy of about 1.3 × 1050 erg, suggesting an ejected mass of about 10 M
⊙. The circular radio shell outside the circular hard X-ray shell is unique among Galactic SNRs. We discuss several possible scenarios, including blast wave, reverse shock, and pulsar-fed emission, but find that none of them can fully explain the observed characteristics of the shell. This poses a challenge for understanding the evolution of SNRs. The results of this paper demonstrate the potential of the ASKAP EMU and POSSUM surveys to discover more objects of small angular size and low surface brightness.
A Comprehensive Study of Type I (Thermonuclear) Bursts in the New Transient SRGA J144459.2–604207
Authors: Fu Tao , Li Zhaosheng , Pan Yuanyue , Ji Long , Chen Yupeng , Kuiper Lucien , Galloway Duncan K. , Falanga Maurizio , Xu Renxin , Li Xiaobo , Ge Mingyu , Song L. M. , Zhang Shu , Zhang Shuang-Nan
Published: February 2025

We report an analysis of Insight-HXMT observations of the newly discovered accreting millisecond pulsar SRGA J144459.2–604207. During the outburst, detected in 2024 February by SRG/ART-XC, the broadband persistent spectrum was well fitted by an absorbed Comptonization model. We detected 60 type I X-ray bursts in the Insight-HXMT medium energy (ME) data, and 37 were also detected with the low-energy (LE) telescope. By superimposing the Insight-HXMT/LE/ME/HE light curves of 37 bursts with similar profiles and intensities, we measured a deficit of X-rays in the 40–70 keV energy band. By analyzing the time-resolved X-ray burst spectra, we determine the mean ratio of persistent to burst flux ofα = 71 ± 7. We estimate the average hydrogen mass fraction in the fuel at ignition, as

X

¯

=
0.342
±
0.033

, and constrain the burst fuel composition as X
0 ≲ 0.4. We found that 14 out of 60 X-ray bursts exhibited photospheric expansion, and thus we estimated the distance to the source as 10.03 ± 0.71 kpc. Combined with IXPE observations, the burst recurrence time increased from 1.55 to 8 hr as the local mass accretion rate decreased, which can be described as

Δ

T

rec

∼

m

̇

−
0.91
±
0.02

.
Wild bee diversity of the National Park of the Semois Valley (Belgium)
Authors: Gérard Maxence , Fiordaliso William , Ferrais Louise , Fournier Chloé , Hairault Malo , Lheureux Lise , Rosa Paolo , Ghisbain Guillaume
Published: February 2025

Wild bees are essential pollinators, yet their decline due to human activities threatens ecosystem stability. Protecting these pollinators requires a detailed understanding of both their diversity and distribution. In Belgium, the recently-established Semois Valley National Park (SVNP) is located in a region with limited bee sampling data and this study aims to identify the habitats most suitable to bees, especially for threatened species.

Over five months, we surveyed 32 sites and collected a total of 1,119 specimens belonging to 120 bee species. Twenty-two of the observed species are listed as threatened in Belgium according to the last Red List published in 2019 for the country, four of them being Critically Endangered. Our findings indicate that mesic grasslands support the highest species diversity, as well as the highest number of threatened species. Our results underscore the need for conservation efforts aimed at maintaining diversity and species richness in this region. Effective biodiversity preservation will require enhanced habitat management and strategies tailored to bee species' ecological requirements.
Anthropophagie dans Western, ciné-poème guadeloupéen de Max Jeanne
Authors: Archimède Maëva
Published: February 2025

Cet article propose une exploration du recueil Western ciné-poème du poète guadeloupéen Max Jeanne, au regard de sa problématique première : la narration de l’histoire guadeloupéenne. Déjouant le « piège » de l’Histoire (avec un H majuscule), le recueil absorbe divers textes, genres, discours pour les neutraliser ou les mettre à profit. L’entreprise que l’on peut qualifier d’anthropophagique s’analyse au regard des théories de l’intertextualité qui mettent en lumière le rôle des poètes dans l’écriture de l’histoire et le questionnement d’une identité caraïbe.
Access and Citizenship for Those With Disabilities
Authors: Bruce Alan , Williams Lee Ann
Published: February 2025

This chapter explores the transformative potential of digital technologies and artificial intelligence (AI) in bridging the gap between learner needs and innovative inclusion for individuals with disabilities. This provides a comprehensive analysis of how such advancements contribute to access and citizenship by examining socio-historical contexts, current practices, and future implications. Neither disability nor advanced technologies exist in a vacuum. Powerful historical, social, and economic forces have shaped the development of both. In understanding the inter-relationship, it is critical to engage with a range of associated issues. Over the past two centuries, disability has been at the forefront of technological innovation and adaptation. Digital emancipation provides digital technologies that empower individuals with disabilities by providing new opportunities for learning, communication, and participation. Digital tools and platforms offer unprecedented levels of accessibility and flexibility.
Preparing Citizens for the Future Digital Literacy and AI in Education
Authors: Bhavana S. , Tabassum Momin Sana , Rao Thota Venkat Narayana , Swetha Chenchu
Published: February 2025

Digital and AI literacy are vital as technology shapes the future, requiring skills beyond basic computer knowledge. Integrating AI in education personalizes learning by identifying students' needs, adapting content, and providing instant feedback, creating engaging, tailored experiences. Ethical issues, including data privacy, algorithmic bias, and tech access disparities, must be addressed to ensure AI's responsible use in education. Teachers play a key role in fostering AI literacy, helping students understand both the potential and ethical considerations of technology. Embedding these skills into curricula prepares students with critical thinking, creativity, and collaboration skills necessary for a digital world. This approach equips students to engage with technology responsibly, building a generation ready to navigate and shape a fair, inclusive digital landscape.
Energy Efficiency and Renewable Energy Adoption
Authors: Ravi Raj V. , Prabakaran M. , Selvakumar P. , Manjunath T. C.
Published: February 2025

It encompasses a wide range of practices and technologies, from improving building insulation and upgrading appliances to optimizing industrial processes and implementing smart energy management systems. By enhancing energy efficiency, we not only lower utility bills but also decrease greenhouse gas emissions,Renewable energy, energy security, as these resources are abundant and available domestically in many regions. advancements, decreasing costs, and supportive policy frameworks. e energy solutions, the integration of energy efficiency measures with renewable energy systems becomes crucial for maximizing the overall benefits.The energy efficiency reduces operational costs for businesses and households, freeing up resources for other expenditures. potential reduction in global energy demand by up to 30% by resilience. The renewable energy sector is also a significant job creator; for instance, solar and wind industries have consistently outpaced fossil fuel job growth in many countries.
Green Financing Effect on Green Human Capital
Authors: Kant Shashi , Adula Metasebia , Birhane Mershaye
Published: February 2025

This chapter investigated at how green human capital functions as a connection among green financing and Ethiopia's corporate social responsibility (CSR) corporate model. It inspects how stakeholder commitment, the completing and success of CSR efforts, and the overall sustainability performance are affected by the creation of green human capital, which is made possible by green funding. Organizations aiming to incorporate CSR into their business models, build green human capital, and take advantage of green subsidy are given helpful advice and ideas. Understanding the environment surrounding green backing, carrying out sustainability assessments, employed with stakeholders, incorporating CSR into essential business operations, encouraging innovation, quantifying and distribution impact, pursuing certification and recognition, and interrelating with local communities are just a few of the propositions. Organizations can progress their sustainability presentation and position themselves as leaders in ethical business applies in Ethiopia by laying these suggestions into effect.
Sustainable Data Quality Management
Authors: Addanki Sireesha , Hullurappa Muniraju
Published: February 2025

In today's data-driven world, organizations face increasing challenges in managing data quality effectively. As data volumes grow, so does the complexity of maintaining high-quality data across diverse systems, particularly in environments with legacy infrastructure and technical debt. This paper explores AI-driven approaches for sustainable data quality management, focusing on how artificial intelligence (AI) can help organizations reduce technical debt in data governance practices. By leveraging AI techniques such as machine learning, natural language processing, and anomaly detection, organizations can automate data cleansing, enhance data validation processes, and improve data integration. These innovations not only improve data quality but also reduce the ongoing costs associated with maintaining outdated and inefficient data management systems. The paper also discusses the role of AI in identifying and addressing technical debt, offering strategies for organizations .
The Microbiota-Gut-Brain Axis in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Narrative Review of an Emerging Field
Authors: El-Sehrawy Amr Ali Mohamed Abdelgawwad , Ayoub Ibtihal Ibrahim , Uthirapathy Subasini , Ballal Suhas , Gabble Baneen C. , Singh Abhayveer , V Kavitha , Panigrahi Rajashree , Kamali Mostafa , Khosravi Mohsen
Published: February 2025

The intricate relationship between gut microbiota and the brain has emerged as a pivotal area of research, particularly in understanding myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). This complex condition is characterized by debilitating fatigue, cognitive dysfunction, and a wide array of systemic manifestations, posing significant challenges for diagnosis and treatment. Recent studies highlight the microbiota-gut-brain axis as a crucial pathway in ME/CFS pathophysiology, suggesting that alterations in gut microbial composition may impact immune responses, neurochemical signaling, and neuronal health. This narrative review systematically explores English-language scholarly articles from January 1995 to January 2025, utilizing databases such as PubMed, Scopus, and Web of Science. The findings underscore the potential for targeted therapeutic interventions aimed at correcting gut dysbiosis. As research progresses, a deeper understanding of the microbiota-gut-brain connection could lead to innovative approaches for managing ME/CFS, ultimately enhancing the quality of life for affected individuals.
C’È UN PROBLEMA CON LA VANILLINA
Authors: Serra Stefano
Published: February 2025

This report illustrates the history of vanilla and vanillin as well as the crucial role this natural substance has played in the field of flavor chemistry. In particular, I will describe how international legislation differentiates natural vanillin from synthetic vanillin and how this regulation has led to the development of new synthetic methods. The very long history of this important flavour has been characterized by an unsolved problem: the inadequate availability of the natural product to meet its increasing market demand.
PERSPECTIVES ON ENERGY TRANSITION AND ENERGY STORAGE
Authors: Consonni Stefano
Published: February 2025

Oltre l’80% del consumo mondiale di energia primaria è coperto oggi dai combustibili fossili, il cui consumo, a dispetto delle previsioni più volte formulate in passato, continua a crescere. Stante le enormi riserve disponibili, l’attuale dipendenza da fonti fossili potrebbe continuare ancora per molto tempo, ma ciò potrebbe comportare gravi conseguenze in termini di cambiamento climatico. Tra le alternative all’uso dei fossili, le fonti rinnovabili intermittenti (solare ed eolico) sono destinate a giocare un ruolo particolarmente rilevante, e ciò comporterà l’inderogabile necessità di imponenti capacità di stoccaggio di energia. In aggiunta ai sistemi idraulici di pompaggio e turbinaggio che oggi coprono la stragrande maggioranza della capacità di stoccaggio mondiale, le tecnologie proposte per sostenere la produzione elettrica su grande scala sono riconducibili a quattro tipologie: stoccaggio chimico (idrogeno ed e-fuels); stoccaggio elettrochimico (batterie); stoccaggio termico (accumulatori di calore) e stoccaggio termodinamico (cicli a CO2, ad aria compressa, ad aria liquida).
Inter-examiner repeatability and validity of static retinoscopy
Authors: Hasrod Nabeela
Published: February 2025

Background: Studies on inter-examiner repeatability of measurements from retinoscopy without cycloplegia are quite limited within and across individuals.Aim: To investigate the inter-examiner repeatability and validity of static retinoscopy to autorefraction in young adults.Setting: The study took place within a South African university.Methods: Convenience, non-random sampling was used to obtain a sample of 68 adult participants, predominantly male (51.5%) of African descent (60.3%). The age range was from 18 years to 25 years with the mean ± standard deviation (s.d.) of 22.5 ± 0.71 years. The right eyes of participants underwent autorefraction, and static retinoscopy was done by two different student examiners. Bland-Altman plots and multivariate analysis were applied to assess inter-examiner repeatability and validity of retinoscopy to autorefraction of sphere, cylinder, spherical equivalent refraction (SER = M), and vector components J0 and J45.Results: Stereo-pair scatter plots for the three refractive samples from both student examiners obtained for the right eye clustered within the same region, which suggested minimal variation in refractive error between the different samples. Bland-Altman plots for mean differences () were less than or equal to one clinical step (0.25 dioptre [D]) for all refractive error variables although 95% Limits of Agreement (LoA) widths were larger for the spherical equivalent coefficients (M).Conclusion: Clinically, inter-examiner retinoscopy is repeatable and comparable to autorefraction as results differed only by approximately 0.25 D.Contribution: This study will be the first in Africa to provide multivariate analysis for inter-examiner repeatability of retinoscopy.
Medication non-adherence in re-admitted patients at a psychiatry hospital: A qualitative study
Authors: Zwide Gopolang E. , Tsolekile Dewet Zukiswa , Sokudela Funeka B.
Published: February 2025

Background: Medication non-adherence is a significant public health concern and is prevalent among mental healthcare users. Approximately 65% of patients with severe mental illness do not adhere to their prescribed medication. Medication nonadherence may worsen mental illness and result in poorer clinical outcomes, including frequent relapses and rehospitalisation rates, as well as long time to remission, which may contribute to increased cost of care.Aim: We explored perspectives regarding reasons for medication non-adherence among readmitted psychiatric patients.Setting: Weskoppies Psychiatric Hospital, Pretoria, South Africa.Methods: We adopted the social constructivism paradigm for this exploratory qualitative study. Purposive sampling was used to select 15 re-admitted patients, who were nonadherent to their medication. Data were collected through individual semi-structured interviews. The interviews were audio recorded and transcribed. The data were thematically analysed, using the principles of grounded theory.Results: Substance abuse, a lack of family support and poor health literacy were the most common reasons for non-adherence to medication. Other reasons included medication side effects, healthcare system drawbacks and a lack of finances to access healthcare. Some patients did not adhere to their medication because they believed that their mental illnesses were spiritual in origin.Conclusion: Multiple factors contributed to patients not adhering to their medication, ultimately resulting in their relapse and readmission. Clinicians should be cognisant of these factors when trying to prevent relapse and readmission.Contribution: Clinicians also ought to identify patients who are at risk of not adhering to medication. Targeted interventions should be established for tackling medication non-adherence.
Oculodentodigital Dysplasia Presenting as Spastic Ataxic Syndrome in an Indian Patient
Authors: Sarma Gosala RK , Varidireddy Abhinaya , Sharath GG , Kumaran Sunitha P
Published: February 2025

Spastic ataxic syndrome is a combination of cerebellar ataxia with spasticity and other pyramidal features. Common causes of spastic ataxic syndrome include spinocerebellar ataxia (SCA) 1, SCA2, autosomal recessive ataxia of Charlevoix–Saguenay, Friedreich ataxia, and hereditary spastic paraplegia type-7. We report a 32-year-old female who presented with unsteadiness of gait, incoordination, and tremulousness of both hands for 10 years with microphthalmia, microdontia, dental caries, and syndactyly. Magnetic resonance imaging of the brain showed T2 fluid-attenuated inversion recovery hyper intensities in periventricular and lobar white matter and internal capsule. Thus, we report a genetically confirmed oculodentodigital dysplasia (ODDD), an autosomal dominant disorder, in an Indian patient who presented with spastic ataxic syndrome, a rarity that has not been reported so far.
A Curious Case Report of Meckel’s Diverticulum with Diverticulitis
Authors: Gopalkrishna S. P. , Kulkarni Srikanth
Published: February 2025

Meckel’s diverticulum (MD) is the most common congenital defect found in the gastrointestinal system, occurring in 2%–4% of the population, with a male-to-female ratio of 2:1. In this report, we describe an unusual case of a 4-year-old male who presented with symptoms of abdominal pain, vomiting, and stools resembling red currant jelly. Physical examination revealed diffuse abdominal tenderness, while ultrasonography showed a target sign in the right hypochondrium, indicating intussusception. Diagnostic laparoscopy confirmed ileal loops intussuscepting into the ascending colon, which could not be reduced laparoscopically. A midline laparotomy revealed approximately 30 cm of ileal loops intussuscepting up to the transverse colon, with MD and diverticulitis identified as the lead point. Surgical intervention included resection of the diverticulum, end-to-end ileal anastomosis using the Vertex endo linear cutter stapler, and an appendectomy. Histopathology confirmed follicular lymphocytic hyperplasia in MD with subacute appendicitis. The patient recovered well and was discharged without complications.
Reworking the treatment of Indian Post Kala azar Dermal Leishmaniasis: 2-step therapy
Authors: Kathuria Sushruta , Gautam Yugansh , Khunger Niti , Sharma Shruti , Singh Ruchi
Published: February 2025

In the current scenario, treatment of Post Kala Azar Dermal leishmaniasis (PKDL) is intravenous liposomal amphotericin B or oral miltefosine. Over the years, there has been a gradual decline in efficacy of miltefosine and a rise in permanent loss of vision. Moreover, In non-endemic states, miltefosine is not freely available. In view of this, we attempted a two step regimen of liposomal amphotericin B and itraconazole to treat two patients of PKDL diagnosed on histopathology as well as PCR. We found this treatment to be highly effective with complete recovery.
Spreen spaces and the synthetic Kreisel-Lacombe-Shoenfield-Tseitin theorem
Authors: Bauer Andrej
Published: February 2025

I take a constructive look at Dieter Spreen's treatment of effective topological spaces and the Kreisel-Lacombe-Shoenfield-Tseitin (KLST) continuity theorem. Transferring Spreen's ideas from classical computability theory and numbered sets to a constructive setting leads to a theory of topological spaces, in fact two of them: a locale-theoretic one embodied by the notion of σ-frames, and a pointwise one that follows more closely traditional topology. Spreen's notion of effective limit passing turns out to be closely related to sobriety, while his witnesses for non-inclusion give rise to a novel separation property – any point separated from an overt subset by a semidecidable subset is already separated from it by an open one. I name spaces with this property Spreen spaces, and show that they give rise to a purely constructive continuity theorem: every map from an overt Spreen space to a pointwise regular space is pointwise continuous. The theorem is easily proved, but finding non-trivial examples of Spreen spaces is harder. I show that they are plentiful in synthetic computability theory.
Square roots and lattices
Authors: Marklof Jens
Published: February 2025

We construct a point set in the Euclidean plane that elucidates the relationship between the fine-scale statistics of the fractional parts of

\sqrt{n}

and directional statistics for a shifted lattice. We show that the randomly rotated, and then stretched, point set converges in distribution to a lattice-like random point process. This follows closely the arguments in Elkies and McMullen’s original analysis for the gap statistics of

\sqrt{n}\bmod 1

in terms of random affine lattices [Duke Math. J. 123 (2004), 95–139]. There is, however, a curious subtlety: the limit process emerging in our construction is
not
invariant under the standard

\operatorname{SL}(2,\mathbb{R})

-action on

{\mathbb{R}}^{2}

.
Detection of IPv6 routing attacks using ANN and a novel IoT dataset
Authors: Emeç Murat
Published: February 2025

The Internet of Things (IoT) is an intelligent network paradigm created by interconnected device networks. Although the importance of IoT systems has increased in various applications, the increasing number of connected devices has made security even more critical. This study presents the ROUT‐4‐2023 dataset, which represents a step toward the security of IoT networks. This dataset simulates potential attacks on RPL‐based IoT networks and provides a new platform for researchers in this field. Using artificial intelligence and machine‐learning techniques, a performance evaluation was performed on four different artificial neural network models (convolutional neural network, deep neural network, multilayer perceptron structure, and routing attack detection‐fed forward neural network [RaD‐FFNN]). The results show that the RaD‐FFNN model has high accuracy, precision, and retrieval rates, indicating that it can be used as an effective tool for the security of IoT networks. This study contributes to the protection of IoT networks from potential attacks by presenting ROUT‐4‐2023 and RaD‐FFNN models, which will lead to further research on IoT security.
Development and validation of a predictive model for endoscopic improvement of Crohn's disease
Authors: Wang Hua-Gang , Nima Cang-La , Zhou Qi
Published: February 2025

BACKGROUND

At present, there is a lack of non-invasive indicators to evaluate the changes in endoscopic activity between two visits for patients with Crohn's disease (CD).

AIM

To develop a model for predicting whether endoscopic activity will improve in CD patients.

METHODS

This is a single-center retrospective study that included patients diagnosed with CD from January 2014 to December 2022. The patients were randomly divided into a modeling group (70%) and an internal validation group (30%), with an external validation group from January 2023 to March 2024. Univariate and binary logistic regression analyses were conducted to identify independent risk factors, which were used to construct a nomogram model. The model's performance was evaluated using receiver operating characteristic curves, calibration curves, and decision curve analysis (DCA). Additionally, further sensitivity analyses were performed.

RESULTS

One hundred seventy patients were included in the training group, while 64 were included in the external validation group. A binary logistic stepwise regression analysis revealed that the changes in the amplitudes of albumin (ALB) and fibrinogen (FIB) were independent risk factors for endoscopic improvement. A nomogram model was developed based on these risk factors. The area under the curve of the model for the training group, internal validation group, and external validation group were 0.802, 0.788, and 0.787, respectively. The average absolute errors of the calibration curves were 0.011, 0.016, and 0.018, respectively. DCA indicated that the model performs well in clinical practice. Additionally, sensitivity analysis demonstrated that the model has strong robustness and applicability.

CONCLUSION

Our study shows that changes in the amplitudes of ALB and FIB are effective predictors of endoscopic improvement in patients with CD during follow-up visits compared to their previous ones.