bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coding of hypersurfaces in Euclidean spaces by a constant vector
Authors: Deshmukh Sharief , Guediri Mohammed 
Published: December 2024

Abstract
An

n

n

-dimensional Riemannian manifold

(

N

n

,
g

)

({N}^{n},g)

isometrically immersed in Euclidean space

R

n
+
1

{R}^{n+1}

with unit normal

ζ

\zeta

and shape operator

S

S

, for a fixed constant unit vector

a

→

\overrightarrow{{\bf{a}}}

in

R

n
+
1

{R}^{n+1}

induces a vector field

v

{\bf{v}}

and a smooth function

ρ

\rho

on

N

n

{N}^{n}

called its code vector and coding function, respectively. The sextuple

(

N

n

,
g
,
ζ
,
S
,
v
,
ρ

)

({N}^{n},g,\zeta ,S,{\bf{v}},\rho )

is called a coded hypersurface of Euclidean space

R

n
+
1

{R}^{n+1}

. In the first result of this article, we show that a compact and simply connected coded hypersurface

(

N

n

,
g
,
ζ
,
S
,
v
,
ρ

)

({N}^{n},g,\zeta ,S,{\bf{v}},\rho )

of

R

n
+
1

{R}^{n+1}

has integral of Ricci curvature

Ric

(

v
,
v

)

{\rm{Ric}}({\bf{v}},{\bf{v}})

with a suitable lower bound if and only if it is isometric to the sphere

S

b

n

{S}_{b}^{n}

of constant curvature

b

b

. In the second result, we show that a complete and simply connected coded hypersurface

(

N

n

,
g
,
ζ
,
S
,
v
,
ρ

)

({N}^{n},g,\zeta ,S,{\bf{v}},\rho )

of

R

n
+
1

{R}^{n+1}

of positive Ricci curvature, with shape operator

S

S

invariant under its code vector field

v

{\bf{v}}

and coding function

ρ

\rho

satisfying the static perfect fluid equation is isometric to

S

b

n

{S}_{b}^{n}

and the converse also holds. Finally, we show that a complete and simply connected coded hypersurface

(

N

n

,
g
,
ζ
,
S
,
v
,
ρ

)

({N}^{n},g,\zeta ,S,{\bf{v}},\rho )

of

R

n
+
1

{R}^{n+1}

has a point

p
∈

N

n

p\in {N}^{n}

with

Ric

(

v
,
v

)

(

p

)

>
0

{\rm{Ric}}({\bf{v}},{\bf{v}})(p)\gt 0

and has mean curvature

H

H

constant along integral curves of code vector

v

{\bf{v}}

satisfies

H

2

≥
c

{H}^{2}\ge c

for a positive constant

c

c

, and the coding function

ρ

\rho

satisfies

Δ
ρ
=
−
n
c
ρ

\Delta \rho =-nc\rho

if and only if it is isometric to

S

c

n

{S}_{c}^{n}

.
Histone lactylation as a driver of metabolic reprogramming and immune evasion
Authors: Cai Qiaoting , Deng Wei , Zou Yutian , Chen Zhe-Sheng , Tang Hailin 
Published: December 2024

Abstract
Lactate is the end product of glycolysis, and extensive research has shown that lactate participates in various pathophysiological processes. Along with associated hydrogen ions, lactate typically functions as an immunosuppressive negative factor and plays a crucial role in tumor metabolic reprogramming. The recently discovered lactylation is a novel epigenetic modification that, similar to other epigenetic modifications, modifies histones to alter chromatin spatial configuration, thereby affecting DNA accessibility and regulating gene expression. More importantly, the degree of lactylation is closely related to local lactate concentrations, establishing a link between epigenetics and metabolic reprogramming. During cellular metabolism, lactate accumulation promotes histone lysine lactylation in cancer cells and immune cells such as macrophages and T cells, playing an essential role in tumor immune evasion and resistance to immunotherapy. This paper details the role of lactylation modifications in cancer immune evasion and resistance to immunotherapy, providing novel therapeutic directions and targets for cancer treatment.
KI und Robotik im europäischen Städtetourismus
Authors: Graß Christina , Hilpert Markus 
Published: December 2024

Zusammenfassung
Künstliche Intelligenz (KI) wird im Smart Tourism für unterschiedliche Zielsetzungen eingesetzt, beispielsweise um das Erlebnis von TouristInnen zu verbessern, Betriebsabläufe zu optimieren, die Sicherheit zu erhöhen oder MitarbeiterInnen zu entlasten. Zur aktuellen KI-Nutzung durch die touristischen Leistungsträger in urbanen Destinationen liegen jedoch kaum empirische Daten vor. Die vorliegende Studie analysiert den aktuellen Implementationsstand von KI und insbesondere der KI-Anwendung Robotik im Städtetourismus von zehn europäischen Großstädten. Der Fokus liegt dabei auf dem Vergleich verschiedener touristischer Leistungssegmente, den dort eingesetzten KI-Anwendungen und deren Zielsetzungen sowie dem Einfluss der Covid-19-Pandemie auf die Implementierung. Die Ergebnisse zeigen sowohl Gemeinsamkeiten, wie die hohe Dominanz der Robotik in allen Leistungssegmenten, als auch segmentspezifische Unterschiede zwischen den touristischen Leistungsträgern.
A “return of the state” in energy transitions? The making of a hydrogen economy in the European Union
Authors: Vezzoni Rubén 
Published: December 2024

Abstract
A shifting paradigm in economic policy is re-asserting the centrality of the state for the transformative overhaul of global energy systems. Amid a burgeoning interest in state policy, however, contemporary scholarly discussions often lack a comprehensive examination of the state itself. We address this gap in economic geography and international political economy by investigating the nuanced role of the state in structuring global industries, with a focus on the emerging hydrogen economy in the European Union (EU). Further elaborating Horner’s typology of state roles in global production networks (GPN) with Jessop’s strategic-relational approach, this article replaces the states-markets dualism with concrete accounts of the co-constitutive relationships binding together the evolution of the “actually existing” State-GPN Nexus. Accordingly, we identify three underdeveloped analytical entry points, concerning (1) the conjoint interrogation of state roles, (2) finance, and (3) the historical regulatory form of the state. This conceptualization is then applied to three case studies on the developing hydrogen economy in Europe. Despite the prominent role of state capital, initiatives such as EU state aid schemes, the European Hydrogen Bank, and the spatialized industrial policy of Hydrogen Valleys reveal the prioritization of de-risking strategies through public-private partnerships more or less directly designed by democratically unaccountable industry groups.
Constituição das doenças da docência
Authors: Vieira Jarbas Santos , Garcia Maria Manuela Alves , Martins Maria de Fátima Duarte , Eslabão Leomar , Silva Aline Ferraz de , Balinhas Vera Gainssa , Fetter Carmem Lucia da Rosa , Gonçalves Vanessa Bugs 
Published: December 2024

Este artigo discute alguns resultados da pesquisa ‘Constituição das doenças da docência’, desenvolvida entre junho de 2007 e outubro de 2009, cujo objetivo foi analisar a relação entre o processo de trabalho e o mal-estar docente em escolas públicas municipais da cidade de Pelotas/RS. A pesquisa teve uma dimensão quantitativa que, valendo-se do programa estatístico SPSS 13.0, analisou dados funcionais e médicos do professorado; e uma dimensão qualitativa, na qual foram entrevistadas professoras que tiraram licença de saúde entre 2006-2007. Os dados foram comparados com a literatura nacional e internacional. Conclui-se que as condições de trabalho e as formas de tratamento do poder público contribuem para o crescimento de problemas de saúde na categoria. Soma-se a isso uma imagem idealizada das professoras sobre o sentido e o significado de seu trabalho; imagem cujo componente básico é a ideia de sacrifício como constituinte da profissão. Os efeitos dessa realidade têm provocado a disseminação do uso de medicamentos na categoria e aumentado os riscos sobre a saúde de cada professora. A medicação funciona pedagógica e administrativamente como mais um mecanismo de controle sobre o trabalho docente.Palavras-chave: trabalho docente, mal-estar docente; medicamentação; controleConstitution of the teaching dieseasesAbstractThis article discusses some of the results presented in the research “Constitution of teaching diseases”, developed between June 2007 and October 2009, which objective was to analyze the relationship between the work process and malaise teaching in public schools in the city of Pelotas/RS. The study was part quantitative; when it was used the statistical program SPSS 13.0 to analyze employment and health data of teachers. It also had a qualitative dimension when teachers who have taken health license during 2006- 007 were interviewed. Data were compared with both national and international literature. It is possible to conclude that working conditions and the way public power treats education contribute to increase health problems in this category. In addition, teachers carry an idealized image about meaning and significance of their work, representing the idea of sacrifice as a basic component of the profession. The effects of it are the dissemination of medicine usage by the category and increasing risks to each teacher health. Medication works pedagogically and administratively as another control mechanism over teaching work.Keywords: teaching work; teacher malaise; medication; control
Exclusão e/ou Desigualdade Social? Questões teóricas e político- práticas
Authors: Frigotto Gaudêncio 
Published: December 2024

O texto aborda a temática da exclusão social no contexto da mundialização do capital e das políticas neoliberais. Destaca algumas advertências críticas ao uso da noção de exclusão social e aponta alguns limites e riscos para seu uso. Salienta que a noção de exclusão social é insuficiente para apreender a crise estrutural do trabalho assalariado e a radicalização da desigualdade na atual crise do sistema capital. Por fim, destaca algumas implicações teórico-práticas desse conceito, apontando que a antinomia inclusão-exclusão é um sintoma de relações geradoras de desigualdades, as quais precisam ser rompidas e superadas. Conclui mostrando que essa travessia implica teoria densa e ação política organizada.Palavras-chave: exclusão social, neoliberalismo, desigualdade, capitalismo tardio, emancipação.Exclusion and/or Social Inequality? Theoretical and Politicalpractices questions.AbstractThe text approaches the social exclusion thematic in the globalizatition of the capital and the neoliberal policies context. Highlights some of the critical warnings to the use of the notion of the social exclusion and points out some limits and risks for its use. Underlines that the notion of social exclusion are insufficient to apprehend the structural crisis of wage labour and radicalisation of inequality in the current crisis of capital system. Finally, highlights some theoretical implications of that concept, pointing out that the antinomy inclusion-exclusion is a symptom of relations generate inequality, which need to be broken up and overcome. Concludes by showing that this passage implies dense theory and organised political action. Key words: social exclusion, neoliberalism, inequality, late capitalism, emancipation.
Alternativas para melhorar o fluxo escolar no ensino fundamental: promoção automática e correção da defasagem idade-série
Authors: Souza Adriéli Cristina de , Bueno Cristiane Aparecida Ribeiro , Figueiredo Ireni Marilene Zago 
Published: December 2024

Na década de 1980, com a emergência da noção de prioridade da Educação Básica, foram implementados programas/projetos para enfrentar, nas primeiras séries do Ensino Fundamental, as altas taxas de evasão e de repetência. Na década de 1990, as relações capitalistas em âmbito internacional e nacional contribuíram com a transição da noção de prioridade da Educação Básica à “Centralidade da Educação Básica”. Como resultado deste processo, foram desenvolvidos programas/projetos os quais visaram alcançar a melhoria do fluxo escolar, por meio da promoção automática e da correção da defasagem idade-série, alternativas consideradas necessárias para alcançar os critérios de produtividade e de racionalidade econômica.Palavras-chave: Política do Ensino Fundamental - Brasil. “Centralidade da Educação Básica”.The programs of automatic promotion and of the lag correction grade-age as alternative to improve the scholar flow in the fundamental teachingAbstract:In the 80’s with the arising of the notion of the basic education priority, programs/projects were implemented to face, in the first series of the fundamental teaching, the high rates of circumvention and repetition. In the 90’s, the capitalist relations in international and national scope contributed with the transition of the notion of the elementary teaching to the “Basic education centrality”. As result of this process programs/projects were developed which aim to reach the improvement of the scholar flow, by means of the automatic promotion and the lag corrections grade-age, alternatives considering necessaries to reach the productivity and rationality economical criteria. Keywords: Fundamental Teaching Politics – Brazil. “Basic EducationCentrality”.
Trabalhos para casa como ferramenta autorregulatória: perspectivas e implicações para as práticas educativas
Authors: Simão Ana Margarida Veiga , Duarte Fátima , Ferreira Paula Costa 
Published: December 2024

Neste artigo abordamos as tarefas de Trabalhos Para Casa (TPC) que desde há décadas integram as práticas educativas e centram a comunidade educativa na reflexão dos seus significados e funções no processo de ensino- aprendizagem. Pretendemos, a partir dos instrumentos construídos, identificar e analisar as conceções de TPC de alunos e professores do 1o ciclo do Ensino Básico e o seu potencial para o desenvolvimento das competências autorregulatórias nos alunos. Os resultados salientam a necessidade de repensar práticas, objetivos, funções e contributos dos TPC para o processo de ensino-aprendizagem. Evidenciam ainda, potencialidades para a promoção dos processos autorregulatórios inerentes às oportunidades para a autonomia, gestão das tarefas, tempo e recursos que a sua realização nos momentos de estudo privado permite.Palavras-chave: autorregulação da aprendizagem, conceções de alunos e professores, trabalhos para casaHomework as a self-regulation tool: perspectives and implications forfuture educational practicesAbstractIn this article we approach Homework, which has integrated educational practices for decades and has made the educational community reflective regarding its meaning and function in the teaching-learning process. From the instruments we constructed, we intend to identify and analyze the conceptions teachers and students have regarding Homework, as well as its potential to develop self-regulatory competencies in students. Results highlight the need to rethink practices, objectives, functions and contributions Homework brings to the teaching-learning process. Furthermore, results also show the potential to promote self-regulatory processes that are inherent to the opportunities towards autonomy, task management, time and resources that Homework implicates in private study moments.Keywords: self-regulation; learners; homework.
Grupos na Escola – discutindo a queixa escolar a partir da Psicologia Escolar Crítica
Authors: Lima Vanessa Aparecida Alves de , Machado Alessandra , Ramalho Naiara Valéria Reis , Corrêa Pedro Vasconcelos 
Published: December 2024

Este artigo descreve uma experiência de formação profissional de estudantes de Psicologia durante dois semestres da disciplina de Psicologia Escolar e Problemas de Aprendizagem na Universidade Federal de Rondônia – UNIR, baseada nos postulados contemporâneos da Psicologia Escolar Crítica. Consiste do relato de um projeto de intervenção com 02 meses de observação na escola (sala de aula, pátio e demais atividades) e posterior formação de grupos de pais, professores e alunos para discutir a queixa escolar em uma escola pública municipal na cidade de Porto Velho (RO) durante o segundo semestre de 2008 e primeiro semestre de 2009. Os resultados foram mais eficientes na perspectiva da formação profissional do que na modificação das estruturas cristalizadas de preconceito e estigmatização contra o aluno com queixa escolar e sua família, dentro da escola. Contudo acreditamos ter contribuído para o início de um processo de reflexão sobre a produção institucional do fracasso escolar. Palavras-Chave: Psicologia Escolar. Grupos. Alunos.Groups at School - discussing the school complaint using the Critical School PsychologyAbstractThis article describes an experience of professional training for psychology students during two semesters in the discipline of School Psychology and Learning Problems at the Federal University of Rondônia (Universidade Federal de Rondônia – UNIR), based on contemporary postulates of Critical School Psychology. It is the report of an intervention project with 02 months of observation at school (classroom, courtyard and other activities) and subsequent group formation of parents, teachers and students to discuss the complaints in a public school in Porto Velho (RO) during the second semester of 2008 and first semester of 2009. The results were more efficient in the view of training than in the modification of the crystallized structures of prejudice and stigma against students with learning difficulties and their families, at school. However we believe that we have contributed to the start of a process of reflection on theinstitutional production of school failure.Keywords: School Psychology. Groups. Students.
HUBUNGAN SELF CONFIDENCE DENGAN PRESTASI BELAJAR BAHASA INDONESIA DI TINGKAT SEKOLAH DASAR
Authors: Putri Nadya Prameski , Ridwanudin Dindin 
Published: December 2024

This research aims to find out the significance of the relationship self confidence and Indonesian learning outcomes in grade IV MI Al-Mursyidiyyah. This research was conducted in January until March 2023 at MI Al-Mursyidiyyah, Pamulang. The sampling technique is total sampling. The research instrument used was a questionnaire of self confidence and documentation of student’s Indonesian scores. Hypothesis testing in this research used the pearson product moment with correlation technique. The results found in this research that there is significance relationshop self confidence and Indonesian learning outcomes in grade IV MI Al-Mursyidiyyah, althought in the weak category. The results showed that the value of significance 0,006 < 0,05 and value of pearson correlation was 0,277 and was included in the weak category. While, the value of the coefficient of determination in this research show the figure of 7,67%. Therefore, there is a weak and significance relationship self confidence and Indonesian learning outcomes in grade IV MI Al-Musryidiyyah.
Enhancing Pediatric Magnetic Resonance Imaging Preparation: A Qualitative Study of Current Practices and the Role of Virtual Reality Tools
Authors: Johnson Beth P. , Garrick Alice , Lawrence Katherine A. , Papafotiou Josephine , Young Tammy , Chen Jeff , Ditchfield Michael , Leong Paul 
Published: December 2024

BACKGROUND AND OBJECTIVES
How children prepare for magnetic resonance imaging (MRI) can help reduce the need for sedation and improve access to pediatric health care. Embedding virtual reality (VR) tools within routine preparation for MRI may support this process. The aim of this study was to qualitatively describe the process of preparing a child for MRI in a tertiary health care setting. We sought to understand the roles of health care workers, parents, and special equipment, such as VR, in preparing children for a successful and a high-quality diagnostic scan.

PATIENTS AND METHODS
There were 29 participants (13 children, 13 caregivers, and 3 health professionals). Children scheduled for clinically indicated noncontrast head MRI scans were recorded on video throughout routine MRI preparation with their parents and health care professionals, with VR included as part of standard care. Interviews with children and caregivers were completed on arrival, immediately before MRI, and post MRI. Using an interpretive description methodology, we integrated coded data from the audio and video to identify themes within an attachment theory framework.

RESULTS
Our qualitative analysis of child MRI preparation strategies revealed 2 main categories: (1) strategies that support self-efficacy and (2) a sense of agency. Strategies employed by child life therapists and caregivers included providing opportunities for accomplishment, practicing sensations, and fostering relational connections through play and collaboration. VR tools enhanced the children’s sense of agency and confidence and offer additional educational and coaching possibilities.

CONCLUSIONS
MRI preparation methods emphasized attachment between child, caregiver, staff, and MR environment by enhancing the child’s self-efficacy and sense of agency. VR offers a platform for MR education and building trust between the child, staff, and MRI setting, with potential utility in underserved medical settings.
La construcción de imaginarios sociales a partir del Nihonshoki: el período Asuka tardío e inicios de Nara (672-720)
Authors: Vargas Alvarado Víctor Julio 
Published: December 2024

El presente trabajo parte del siguiente objetivo general: Analizar el Nihonshoki como producto de su época —cuando fue encargada su realización por el emperador Tenmu (672-686) y finalizado en el año 720[1]— con el fin de comparar su función en la construcción de un imaginario social que cohesionara el Japón de aquel momento. De esta manera, se considera el posible fin que tuvo originalmente el texto en cuestión, para legitimar la casa imperial y que no fuera cuestionada la llegada al poder de Tenmu posterior a la Guerra de Jinshin, tratando de evidenciar con el texto el origen divino de todos los emperadores y emperatrices hasta el momento, así como insertándose dentro de este linaje el propio Tenmu.

[1] Gina Barnes, State Formation in Japan Emergence of a 4th-century ruling elite (Nueva York, Estados Unidos: Taylor & Francis, 2007), 203.
The practical application of additive manufacturing for extreme environments
Authors: Duncan Bradley P. , Smith Melissa A. 
Published: December 2024

Abstract
In the automotive, aerospace, and defense industries, there is a need for additively manufactured components that are capable of multiple functions or enhanced performance, but can also withstand extreme environments. Existing material sets for additively manufactured components are generally unsuitable for extreme environments, which limit their practical use. Both top-down and bottom-up approaches for innovation can guide the development of new materials and processes that address the shortcomings of the existing material sets. This manuscript will discuss the development of new composite materials and processing using direct ink writing additive manufacturing for use in functional and environmental extremes. To demonstrate how these materials and methods outperform those in existence, three vignettes will be highlighted. Due to the simplicity of our approaches and the consequential implications of their use, we expect the wide adoption of these materials and methods. In addition to the increased acceptance of additively manufactured components for practical applications, especially those in extreme environments, there is also the potential for more far-reaching technological advantages.