bluuebunny/crossref_metadata_2025_split huggingface dataset:
A study on usefulness of neural network equalizer to reduce impact of amplitude fluctuations in magnetic tape
Authors: Nishikawa Madoka , Nakamura Yasuaki , Okamoto Yoshihiro 
Published: September 2024

Abstract
As digital data grows explosively year after year, magnetic tape devices, with their high reliability and long-term storage capacity, are widely used for backup and archiving. Magnetic tape devices with larger capacity are required, and it is necessary to improve track density. We have previously constructed a simulator that considers inter-track interference due to narrower tracks in barium ferrite (BaFe) magnetic tape drives and evaluated its performance. In this study, we develop a simulator which more accurately models the experimental data, considering amplitude fluctuations caused by the problem of poor tape running, and discuss the usefulness of a neural network equalizer to reduce the effects of amplitude fluctuations. As a result, we show that applying the neural network equalizer is useful in reducing the impact of amplitude fluctuations caused by the problem of poor tape running.
Achievement of technological sovereignty in the context of ensuring Russia’s economic security in the conditions of sanctions
Authors: Plotnikov A. V. , Plotnikov V. A. 
Published: September 2024

Aim. To develop a methodology for assessing technological sovereignty in the context of ensuring Russia’s economic security under sanctions. Objectives. To analyze domestic theoretical developments in the field of technological sovereignty research; to identify the relationship between political and economic turbulence caused by sanctions, technological sovereignty and national economic security; to describe the author’smethodology for assessing technological sovereignty in the context of ensuring Russia’s economic security under sanctions. Methods. The study used general scientific methods of analysis, synthesis, analogies, expert evaluations. Special methods, including content analysis of economic publications, index method, economic and statistical modeling, structural analysis of economic indicators, methods of multi-criteria decision-making, scaling of economic indicators, etc., were applied. Results. Based on the results of the research, a new methodology for assessing the level of technological sovereignty as an element of national economic security under the impact of non-economic shocks has been developed. The methodology is realized by working out the following actions: 1) selecting the industry to assess the level of technological sovereignty (at this step of the methodology it is recommended to select only critically important industries); 2) decomposition of technologies used in the industry (for this purpose it is recommended to use the taxonomy of technological sovereignty projects of VEB.RF); 3) expert assessment of the level of technological independence of primary processes (the assessment is carried out on a ten-point scale, where 0 corresponds to full technological import dependence, 10 - to full technological import-independence); 4) assessment of the level of technological independence of primary processes (the assessment is carried out on a ten-point scale, where 0 corresponds to full technological import dependence, 10 - to full technological import-independence); 4) assessment of the level of technological sovereignty of primary processes). Conclusions. Technological sovereignty in the conditions of increasing anti-Russian sanctions and political and economic turbulence serves as an important element in the system of ensuring national economic security. To assess the level of technological sovereignty the corresponding methodology is proposed. The results obtained from its application allow to develop and implement a set of measures to maintain technological sovereignty at the necessary level.
Evolution of publications in Brazil and in the world on efficiency and risk in dairy farming from 1979 to 2031
Authors: Bassotto Leandro Carvalho , Prado José Willer do , Nascimento Esteffany Francisca Reis , Vicente Fabio Henrique 
Published: September 2024

A pecuária leiteira é um importante setor do agronegócio mundial e é fundamental para o desenvolvimento econômico do Brasil. O objetivo deste estudo foi identificar os principais temas abordados pelas literaturas nacional e internacional sobre eficiência e risco na pecuária leiteira, bem como propor um framework e uma agenda para futuras pesquisas na ótica da teoria da firma. Para tanto, realizou-se uma análise bibliométrica sobre eficiência e risco na pecuária leiteira, em artigos científicos indexados na Web of Sciencede 1979 a 2021, com uma projeção para 2031. As literaturas nacional e internacional baseiam-se principalmente em estudos relacionados à eficiência e custos. A pesquisa brasileira parece apoiar-se em questões econômicas e de custo, enquanto na pesquisa internacional a eficiência é preconizada. No contexto da teoria da firma, parece haver predominância de estudos ancorados nos pressupostos das teorias de custos e receitas no Brasil, e nas de produção, no mundo. Tanto no Brasil quanto no mundo, há mais artigos sobre eficiência do que sobre risco. É possível que, seguindo o mainstream internacional, a pesquisa brasileira aumente suas especificidades em áreas como eficiência, sistemas de produção e outros temas mais atuais.
O papel da inovação nas aquisições públicas: estudo de caso de uma instituição pública de pesquisa agropecuária
Authors: Da Silva Neudes Carvalho , Pinto Daniel Mendes , Saito Alexandre Satoshi , Couceiro Marcio Akira 
Published: September 2024

Na busca por soluções inovadoras, o governo brasileiro modernizou os procedimentos de aquisições públicas. O Sistema de Registro de Preços (SRP) e o pregão na forma eletrônica fazem parte das inovações. Este estudo teve por finalidade averiguar a adoção dessas inovações preconizadas pelo governo federal, para aquisições públicas por parte da Empresa Brasileira de Pesquisa Agropecuária (Embrapa). Nessa perspectiva, adotou-se a metodologia de pesquisa bibliográfica e documental de caráter exploratório. Com o uso do Tableau Business Intelligence, analisaram-se os dados referentes a processos e empenhos para os anos 2006, 2013 e 2014. Os resultados obtidos permitem afirmar que, em 2006, o pregão representou 48,31% do montante do valor empenhado; em 2014, houve aumento de mais de vinte e um pontos percentuais, e o índice passou para 69,53%, em comparação ao de 2006. Quanto ao número de processos no ano de 2014, em comparação ao de 2013, a utilização do SRP contribuiu para a redução de 823 processos, o que resultou na economia operacional de R$ 5.674.362,05. Portanto, a adoção das inovações foi positiva para a Embrapa.
La Brecha Socioeconómica. Factor Determinante en el Manejo Correcto de las Tics de los Estudiantes de la Carrera de Derecho de la Universidad Técnica de Oruro
Authors: Morales Bejarano Rodrigo , Quintanilla Soto Alejandro Iber 
Published: September 2024

Manejar adecuadamente las tecnologías de Información y Comunicación en la actualidad se ha convertido en una competencia esencial en el mundo académico y en el ámbito profesional. Tener el conocimiento de las TIC no solo facilita manejar adecuadamente el acceso a la información, sino permite optimizar otros ámbitos como el: Aprendizaje, la investigación y el trabajo colaborativo. El uso de las TIC, es un recurso necesario para desarrollar: Habilidades críticas en la resolución de problemas, el pensamiento crítico y la capacidad de comunicarse de manera efectiva. Es evidente que vivimos en un mundo cada vez más digital. Debido a las razones presentadas, el presente trabajo fue elaborado con el propósito fundamental de demostrar la correlación que existe entre el nivel socioeconómico de los estudiantes de la Carrera de Derecho de la UTO perteneciente a la Facultad de Derecho, Ciencias Políticas y Sociales de la Universidad Técnica de Oruro y el dominio que tienen sobre las Tecnologías de la Información y la Comunicación (TICS). Se busca determinar si la brecha económica atravesada en la etapa de educación formal influye en la capacidad de los estudiantes para utilizar eficazmente las TIC en sus actividades académicas dentro de la Universidad. Los resultados preliminares obtenidos en base a la recolección de datos en base a una encuesta estructurada dirigido a estudiantes de diferentes paralelos de segundo año sugieren que existe una relación significativa entre el nivel socioeconómico y el acceso o el uso de las TIC, afectando el aprovechamiento que se puede tener de las herramientas tecnológicas en el ámbito académico y el desarrollo de las habilidades en relación al manejo de las TICS.
Understanding the Effects of Spacecraft Trajectories through Solar Coronal Mass Ejection Flux Ropes Using 3DCOREweb
Authors: Rüdisser Hannah T. , Weiss Andreas J. , Le Louëdec Justin , Amerstorfer Ute V. , Möstl Christian , Davies Emma E. , Lammer Helmut 
Published: September 2024

Abstract
This study investigates the impact of spacecraft positioning and trajectory on in situ signatures of coronal mass ejections (CMEs). Employing the 3DCORE model, a 3D flux rope model that can generate in situ profiles for any given point in space and time, we conduct forward modeling to analyze such signatures for various latitudinal and longitudinal positions, with respect to the flux rope apex, at 0.8 au. Using this approach, we explore the appearance of the resulting in situ profiles for different flux rope types, with different handedness and inclination angles, for both high- and low-twist CMEs. Our findings reveal that CMEs exhibit distinct differences in signatures between apex hits and flank encounters, with the latter displaying elongated profiles with reduced rotation. Notably, constant, nonrotating in situ signatures are only observed for flank encounters of low-twist CMEs, suggesting the existence of untwisted magnetic field lines within CME legs. Additionally, our study confirms the unambiguous appearance of different flux rope types in in situ signatures in all of the cases, barring some indistinguishable cases, contributing to the broader understanding and interpretation of observational data. Given the model assumptions, this may refute trajectory effects as the cause for mismatching flux rope types as identified in solar signatures. While acknowledging limitations inherent in our model, such as the assumption of constant twist and a nondeformable torus-like shape, we still draw relevant conclusions within the context of the global magnetic field structures of CMEs and the potential for distinguishing flux rope types based on in situ observations.
Effects of Multichannel Active Galactic Nuclei Feedback in FIRE Cosmological Simulations of Massive Galaxies
Authors: Byrne Lindsey , Faucher-Giguère Claude-André , Wellons Sarah , Hopkins Philip F. , Anglés-Alcázar Daniel , Sultan Imran , Wijers Nastasha , Moreno Jorge , Ponnada Sam 
Published: September 2024

Abstract
Feedback from supermassive black holes is believed to be a critical driver of the observed color bimodality of galaxies above the Milky Way mass scale. Active galactic nuclei (AGN) feedback has been modeled in many galaxy formation simulations, but most implementations have involved simplified prescriptions or a coarse-grained interstellar medium (ISM). We present the first set of Feedback In Realistic Environments (FIRE)-3 cosmological zoom-in simulations with AGN feedback evolved to z ∼ 0, examining the impact of AGN feedback on a set of galaxies with halos in the mass range 1012–1013
M
⊙. These simulations combine detailed stellar and ISM physics with multichannel AGN feedback including radiative feedback, mechanical outflows, and, in some simulations, cosmic rays (CRs). We find that massive (>L*) galaxies in these simulations can match local scaling relations including the stellar mass–halo mass relation and the M
BH–σ relation; in the stronger model with CRs, they also match the size–mass relation and the Faber–Jackson relation. Many of the massive galaxies in the simulations with AGN feedback have quenched star formation and elliptical morphologies, in qualitative agreement with observations. In contrast, simulations at the massive end without AGN feedback produce galaxies that are too massive and form stars too rapidly, are order-of-magnitude too compact, and have velocity dispersions well above Faber–Jackson. Despite these successes, the AGN models analyzed do not produce uniformly realistic galaxies when the feedback parameters are held constant: While the stronger model produces the most realistic massive galaxies, it tends to overquench the lower-mass galaxies. This indicates that further refinements of the AGN modeling are needed.
Une relecture prospective du rapport Pisani-Ferry et Mahfouz sur les incidences économiques de l’action pour le climat
Authors: Popiolek Nathalie 
Published: September 2024

La prospective stratégique est une démarche assez générique et au fond on peut qualifier comme telle toute réflexion sur les actions à entreprendre aujourd’hui pour préparer le futur. Vue ainsi, la mission d’évaluation des impacts macroéconomiques de la transition écologique, que la Première ministre Élisabeth Borne a confiée en septembre 2022 à Jean Pisani-Ferry, relève bel et bien de cette démarche. Ainsi, c’est avec ce prisme que nous souhaitons relire ici le rapport remis en mai 2023 [Pisani-Ferry, Mahfouz, 2023], qui fait la synthèse du travail mené dans le cadre de cette mission, laquelle a bénéficié du concours d’une centaine d’experts mobilisés au sein de onze groupes thématiques et d’un groupe « simulations ». Mais auparavant, nous souhaitons préciser, en cinq points clés, ce que nous entendons par prospective stratégique.
Transition énergétique : promesses et défis des Just Energy Transition Partnerships
Authors: Ha-Duong Minh 
Published: September 2024

Depuis la COP26, les Just Energy Transition Partnerships ( JETP ) portent une promesse majeure pour lutter contre le changement climatique : les pays occidentaux proposent de prêter et d’investir massivement dans les pays émergents pour accélérer leur transition énergétique. Mais les quatre projets pilotes en cours doivent réussir pour que ce dispositif se pérennise et s’étende. Or ces projets révèlent des défis et des effets secondaires potentiels, y compris le risque d’être utilisés à des fins géopolitiques, des conditions cachées, une perte de confiance et un endettement public extérieur excessif. Pour surmonter ces risques, il convient d’accroître la transparence, de promouvoir la compétition, d’adopter des normes sociales et environnementales largement reconnues et de réduire la portion de la dette souveraine dans le paquet de financement global.
Reconstruire l’Europe de l’énergie : pour un nouveau contrat de sécurité énergétique
Authors: Maisonneuve Cécile 
Published: September 2024

La crise énergétique européenne qui s’est ouverte en 2021 n’en finit pas de miner la compétitivité économique du Vieux Continent. Face au retour des empires, il faut pourtant qu’émerge rapidement un nouvel ordre de sécurité énergétique européen, qui implique changements méthodologiques, réduction du poids des idéologies et capacité à intégrer la géopolitique dans les réflexes européens. Le monde globalisé de la transition énergétique se prête mal aux raisonnements anciens : la souveraineté énergétique doit se concevoir aux plans national et européen. Tel est le contexte dans lequel il faut reconstruire une Europe de l’énergie en la fondant sur trois principes : réalisme, solidarité, puissance.
Study of Dengue Fever in an Epidemic - A Single Centre Observational Study at Tertiary Care Hospital
Authors: Chikkaveeraiah Shashidhara Kuppegala , Srinath K. M. , Hathur Basavanagowdappa V , Hari V. S. Aravindh , Vanama Lakshman Sai 
Published: September 2024

Introduction:
Dengue fever (DF) is one of the most common and the most important vector-borne diseases caused by arboviruses with a significant mortality and morbidity. The incidence of DF is increasing over the years. This study aims to map the clinical features of the disease.

Materials and Methods:
This prospective, observational study was done among adult patients at a tertiary care medical college hospital. Two thousand three hundred and fourteen patients were studied and analyzed. All patients who were nonstructural protein 1 (NS1) antigen/IgM dengue positive were included in the study. Clinical features, hematological, and biochemical parameters were noted.

Results:
In the 2314 patients studied, body pain was the major symptom (35.4%) followed by headache (33.5%), fever (24.5%), nausea (16.9%), rash (16.6%), eye pain (16.2%), vomiting (12.1%), joint pain (10.2%), diarrhea (6.1%), anorexia (4.7%), cough (3.7%), lethargy (2.2%), and sore throat (1.2%). Hemorrhagic manifestations were noted in 263 patients (11.36%), of which the most common was epistaxis (50.1%) followed by purpura/ecchymosis (8.7%), hematemesis (6.8%), bleeding gums (6.8%), blood in stool (6.4%), hematuria (2.6%), and vaginal bleeding (0.4%). Patients positive for dengue NS1 were 1709 (73.9%), dengue IgM were 154 (6.66%), and both dengue NS1 and IgM were 743 (32.1%) patients. The mortality rate was 0.8%. Of 2314 patients, 29.52% had severe thrombocytopenia (<20,000/mm3), 17.7% had moderate thrombocytopenia (20,000–50,000/mm3), and 72.66% had mild thrombocytopenia (50,000–100,000/mm3).

Conclusion:
A clinician should be alerted to the possibility of dengue infection if a patient has a fever accompanied by headache, retroorbital pain, an erythematous morbilliform rash, conjunctival suffusion, and itching in the palms and soles, as well as thrombocytopenia, leucopenia, and elevated liver transaminases.
Ischemic strokes due to pulmonary arteriovenous malformations: A systematic review
Authors: Ramaswamy Srinath , Marczak Izabela , Mulatu Yohannes , Eldokmak Mohamed , Bezalel Alon , Otto Ariana , Levine Steven R. 
Published: September 2024

Abstract:

BACKGROUND:
Pulmonary arteriovenous malformations (PAVMs) can cause acute ischemic strokes (AISs) through paradoxical embolism. The clinical and imaging features of AIS due to PAVMs have not been studied. We report a case and perform a systematic review of the clinical and imaging characteristics of patients with AIS due to PAVMs. This may provide clues to screen patients with AIS for PAVMs and treat them appropriately to prevent further strokes.

MATERIALS AND METHODS:
MEDLINE, EMBASE, and Web of Science databases were searched from inception to October 2023. We included patients of any age with AIS attributed to PAVM. Studies without clinical data were excluded. Demographics, AIS characteristics (location and arterial territories), and PAVM characteristics (location, size, and treatment) were recorded.

RESULTS:
A 47-year-old female presented with acute vertigo and gait imbalance. Magnetic resonance imaging showed AIS in the right cerebellum. CT chest confirmed a PAVM in the right lower lobe. Endovascular coil closure was performed. We identified 102 patients from 96 records. The mean age was 47.4 ± 17 years (67% female). Seventy percent had single AIS and 30% had multiple. The location was anterior circulation in 50%, posterior in 37%, and both in 13%. The most common arterial territory was middle-cerebral (51%), followed by posterior-cerebral (25%). PAVMs were mostly single (78%) and in the lower lobes (66%). Thirty-three had hereditary hemorrhagic telangiectasia (HHT) (33%).

CONCLUSIONS:
PAVM-related strokes occur at a young age and may have a high propensity for multifocality and posterior circulation location. Patients with PAVMs and AIS should be screened for HHT and venous thromboses.
LncRNA linc00312 regulates postoperative scar formation by adjusting miR-9
Authors: Zhang Zhiming , Zhang Hao , Sun Wenyong , Wu Mingyao , Peng Xiaobing , Liu Yanan 
Published: September 2024

Abstract

Background:
Postoperative scar formation is a typical aspect of the physiological process of wound recovery, but issues with the healing process can lead to the formation of hypertrophic scar (HS).

Objectives:
To delved into the interaction between linc00312 and miR-9, and additionally analyzed their impacts on the growth and apoptosis of HS fibroblasts.

Methods:
Quantitative real-time polymerase chain reaction (qRT-PCR) was utilized to determine the expression levels of linc00312 and miR-9, cell viability of scar fibroblasts was measured by cell counting kit-8 (CCK-8), flow cytometry was employed to determine the apoptosis rate of cells, cell clone formation assay was used to determine the proliferative capacity of cells, and the targeted regulation of linc00312 on miR-9 was validated through dual luciferase reporter gene experiments. The biological processes and molecular mechanisms of scar formation are studied through gene ontology and kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis.

Results:
The expression of linc00312 was noticeably enhanced in scar tissue, in contrast to the significantly diminished expression of miR-9, suggesting an inverse correlation between the two. Linc00312 stimulated the proliferation of HS fibroblasts and prevented their apoptosis rate, while miR-9 displayed the opposite effect. Linc00312 governs the activities of HS fibroblasts through the manipulation of miR-9.

Conclusion:
Long noncoding RNA (LncRNA) linc00312 regulates postoperative scar formation through miR-9 mediation. LncRNA linc00312/miR-9 could potentially serve as therapeutic targets for addressing postoperative scarring.
Ten tips to master ultrasound B-scan of the posterior segment of the eye
Authors: Mohan Sashwanthi , Mohankumar Arthi , Mohan Madhuvanthi , Karunanidhi Rakesh , Rao Vaishnavi Prasad , Rajan Mohan 
Published: September 2024

Background:
The ultrasound B-scan is one of the most commonly used ophthalmic investigations in day-to-day practice. It is a noninvasive investigative modality to assess the posterior segment of the eye and is irreplaceable in patients with hazy or opaque media.

Purpose:
This video aims to summarize a few tips for beginners to help them perform and interpret a B-scan with ease.

Synopsis:
In this video, we have briefly described the principle of B-scan using animations. The various scanning techniques and probe orientations have been demonstrated using short video clips. We have also summed up the indications and how various clinical entities appear in a B-scan.

Highlights:
The teaching points include the principle, indications, probe orientations, and how common retinal pathologies appear in a B-scan.

Video link:

https://youtu.be/lUlUvShIy9A.