bluuebunny/crossref_metadata_2025 huggingface dataset:
FEATURES OF THE DEVELOPMENT OF ADDITIVE MANUFACTURING METHODS IN APPLICATION TO LIQUID PROPELLANT ROCKET ENGINES
Authors: Векілов С. Ш. , Ліповський В. І.
Published: February 2024

Abstract. Modern development of additive manufacturing methods makes it necessary to seriously consider an alternative type of production for the manufacture of liquid rocket engine structures. On the one hand, additive manufacturing has a number of undeniable advantages compared to classical methods traditionally used in the rocket and space industry. On the other hand, products obtained by this method have characteristic features that must be taken into account at the early stages of design: relatively high surface roughness, the need to adapt the geometry of existing technical solutions, material properties, etc. Moreover, a full-fledged quality control system for the resulting products is currently the moment is missing, and the standardization of the production class is just emerging. It is also important to understand the direction of development of additive manufacturing, which in the future can lead to a significant increase in the characteristics of the resulting products. This paper discusses options for classifying additive manufacturing methods, provides definitions and classification of metal 3D printing methods, according to the existing ISO/ASTM 52900 standard, as well as the main features of the technology. The main advantages and disadvantages of additive manufacturing methods are considered, and a structural decomposition of the typical design of a liquid propellant rocket engine chamber is carried out. The work aimed at manufacturing structural elements for further integration into the production cycle of liquid-propellant rocket engines is considered. The work is considered, the results of which were a combination of additive technology methods, which made it possible to apply the concept of bimetallic additive production. Such products were produced without the use of complex technological equipment and belong to the product of “evolving” additive manufacturing. Based on the results of the work, it was concluded that it is possible to use additive technologies to improve the performance of new liquid-propellant rocket engine designs.
Corpus Literacy Training for In-Service English Language Teachers
Authors: Basal Ahmet , Akbaş Erdem , Bal-Gezegin Betül
Published: February 2024

Corpus analysis offers a more accurate understanding of a language than intuition but is not widely used in foreign language instruction. This study uses a hermeneutic-phenomenology approach and content analysis to examine the impact of a corpus literacy course on the perceptions and performance indicators of 29 English language teachers. The results suggest that corpus literacy instruction is crucial for language teachers to incorporate corpus into their classroom practices effectively. Even a brief, intensive corpus literacy course can positively alter teachers’ perceptions and abilities, increase their awareness of corpus usage in language teaching, and equip them with the skills needed, highlighting the importance of incorporating corpus literacy into the design of English language teacher education programs.
(De)Motivating Factors Among TESOL Professionals Writing in English for Publication From South America
Authors: Banegas Darío Luis , Romano María Elisa
Published: February 2024

While the literature has examined the experiences and attitudes of TESOL (Teaching English to Speakers of Other Languages) professionals toward writing in English for publication in terms of material, environmental, and political conditions as well as (non)discursive challenges, little is known about the (de)motivating factors underpinning their drive to publish in English, particularly in South America. This study explores the (de)motivation of 522 TESOL professionals in South America to write for publication in English. The study adopted a sequential mixed-methods design that consisted of an online survey followed by 20 individual interviews with purposefully sampled participants. Findings show that, despite personal and social-contextual challenges, the participants were driven by altruism, impact, and self-efficacy.
nvestigation of the Possibility of Identifying Websites Visited by the User Based on HTTP/2 Traffic
Authors: Getman Aleksandr Igorevich , Stepanov Ivan Alexandrovich
Published: February 2024

Confidentiality is an important security feature when exchanging data over a network. To implement it, a family of SSL/TLS protocols is used, which, however, do not fully hide either the visited site or the user's actions. In addition to privacy, privacy also plays a significant role for network users. To provide additional privacy, some software solutions have been implemented, such as Tor and I2P. As a measure of the privacy of the relevant solutions, their resistance to a specialized class of attacks can be used. One of the attacks is Website Fingerprinting, which allows the traffic sent and received by a known user to determine which sites he visited. Website Fingerprinting is a classification task, where the object is the user's visit to the website, and the class is the website itself. This article examines the Website Fingerprinting attack for HTTP/2 traffic. The paper contains a description and calculation of popular features used in traffic classification, and assesses their applicability to the Website Fingerprinting task. To implement the Website Fingerprinting attack, several classifiers are built, among which an algorithm is selected that gives the best result on the collected data set. The accuracy of the best classifier is 97.8% under certain assumptions. In addition, there is an assessment and analysis of some real-world constraints affecting the accuracy of classification.
On Problems in OpenBLAS Library Usage in Productized Code on RISC-V
Authors: Zaytseva Ksenia Alexeyevna , Puzikova Valeria Valentinovna , Sokolov Andrey Dmitrievich
Published: February 2024

The boundary element method usage for the numerical simulation in continuum mechanics problems leads to the need to solve a system of linear algebraic equations with a dense matrix. The de facto standards for the interface of functions over dense matrices and vectors software implementations are BLAS/LAPACK. Among the optimized open-source BLAS/LAPACK implementations, only the OpenBLAS library includes optimizations for the widest range of hardware platforms. This library is optimized for Intel, AMD, ARM and RISC-V architectures. The open RISC-V architecture ecosystem is currently actively developing. European supercomputing centers have opened RISC-V competence centers as part of the government's EuroHPC grant support, since solutions based on the ARM architecture are not recognized as part of the European initiative to develop its own technological independence. Currently, companies included in the international RISC-V consortium are developing not only high-performance RISC-V processors, but also AI accelerators, as well as video cards based on RISC-V architecture. OpenBLAS is actively supported and optimized for emerging RISC-V hardware and extensions. However, libraries used in product code are traditionally subject to strict requirements for stability and reliability in order to minimize possible errors and failures in the product. As it turned out, from this point of view, OpenBLAS has a number of problems that we had to solve in order to productize this library. In this article the OpenBLAS test system is described, the problems of testing the LAPACK functionality of the library and ways to solve them are discussed. In addition, the test coverage of the BLAS functionality is analyzed and the results achieved in increasing it are presented. It is planned to contribute the described changes to the OpenBLAS project.
Fast Analysis of Static IR Drop Effect Based on Machine Learning Methods
Authors: Solovyev Roman Aleksandrovich , Telpukhov Dmitry Vladimirovich , Demidov Evgeny Denisovich , Shafeev Ilya Ilyich
Published: February 2024

As part of the ICCAD Contest 2023 (Problem C) competition, the paper describes a methodology for applying ML models to perform static IR drop analysis. Methods for obtaining a database for training a neural network to solve this problem are given. We consider a technique for training an ML model to analyze the static IR-drop effect. The generation of input data for training a neural network from SPICE netlists is also discussed in this paper. This solution is ranked in the TOP 3 at the ICCAD Contest 2023 competition.
Impacts of EL NIÑO-Southern oscillation on tropical cyclone activity over the coastal zones of Vietnam
Authors: Nguyen Thanh Co , Hoang Luu Thu Thuy , Dinh Van Manh , Trinh Thi Thu Thuy
Published: February 2024

The activity of El Niño - Southern Oscillation (ENSO) has been found to alter the characteristics of tropical cyclones (TCs) worldwide. This paper examines how ENSO influences the active time, occurence frequencies, and intensities of TCs over the coastal zones of Vietnam. The study uses Best Track Data in the Western North Pacific region from 1961 to 2020. The wind speed fields of all TCs over the coastal zones are calculated using a semi-empirical model with a square grid of 0.05° resolution. The results show that the frequencies of TCs over the coastal zones decrease during El Niño years, whilethe TC intensities increase significantly compared to those in Neutral years. Meanwhile, TC intensities over all coastal zones during La Niña years, and some coastal zones during El Niño years, decrease significantly compared to those in Neutral years. The magnitudes of both the increase and decrease in TC frequencies and intensities over the coastal zones vary significantly. Moreover, the active time of TCs during La Niña years in some coastal zones is shorter and occurs later than during the Neutral years.
Innovativeness Unveiled: Exploring Concept and Shaping Conditions in Personnel Function
Authors: Myjak Teresa
Published: February 2024

Background: Innovativeness concerns various organisational aspects and manifests at different social life levels. Innovativeness has its source in the intensity of changes inside and outside the organisation. Many terms for innovativeness revolve around two keywords: ability and inclination.
Research objectives: The paper aims to explain the concept of innovativeness and to recognise the conditions shaping it according to respondents. It also examines conditions affecting the implementation of personnel functions in the surveyed enterprises.
Research design and methods: Empirical data were obtained using the survey technique using the author's questionnaire survey form. Empirical research has been characterised by the object and subject of research and research time and space.
Results: Most respondents generally understand innovativeness as the ability to introduce changes in the personnel area, which partially confirmed the first research hypothesis. No significant discrepancies were observed regarding the conditions that cause or even force the use of innovative ways of performing the personnel function and specific tools in this functional area of the enterprise.
Conclusions: The theoretical considerations and empirical research presented on their basis allowed us to determine how the concept of "innovativeness" is understood in the personnel area. The respondents, representing enterprises of all sizes located in different parts of the Malopolska Region and with different scales of operations, also perceived innovativeness differently.
Kalman Filters in crop models: old experiences in new contexts
Authors: Oliveira Monique Pires Gravina de , Zorzeto-Cesar Thais Queiroz , Attux Romis Ribeiro de Faissol , Rodrigues Luiz Henrique Antunes
Published: February 2024

Data assimilation has been widely used for improvement of crop models’ estimates, for example to incorporate the effects of external events or compensate calibration errors in large areas. The term describes multiple approaches for those who want to take advantage of satellite imagery to reduce uncertainty or improve accuracy of model estimates. Kalman Filters are among the most used methods for achieving these goals. But their use in new contexts, i.e., from open field to protected environments, requires untangling aspects of the pipeline that are often performed in many different ways without guidelines, such as which variables to assimilate or how to ascribe uncertainty to observations or model estimates. This study is then divided in two parts. In the first, we review details on how uncertainty is ascribed on crop model estimates and in observations for applications of the Kalman Filter and three variations of the method, i.e., the Extended, Unscented and Ensemble, as well as which state variables are often updated and the frequency with which assimilation may occur, as well as how these aspects are connected to each other. In the second part, we apply different approaches from the reviewed literature in a greenhouse tomato crop model. We use artificial data with controlled noise levels as well as artificial data generated by simulation using other tomato crop model. We assess the impacts of using different methods and different approaches for ascribing uncertainty in model estimates and in observations, by assimilating artificial observations of fruit and of mature fruit biomass. We note that covariances should not be fixed values, that there are trade-offs between ascribing model uncertainty to the state itself and to other elements of the process, that observation covariance may have been considered disproportionality higher when using some ensemble generation approaches in the EnKF, and that bias in model estimates may lead to worse outcomes even when observations are high-quality ones. While we discussed aspects that should be considered in a new environment, many of them are also important for field crops, and we concluded assimilation should follow an assessment of which variables could be useful for assimilation.
Culturas políticas e identidades colectivas después del giro cultural: Nación y género en la historiografía española contemporánea
Authors: Miralles Xavier Andreu , Burguera Mónica
Published: February 2024

El artículo repasa el impacto que ha tenido el giro cultural en el estudio de la historiografía política actual, con especial atención a los estudios sobre el nacionalismo y los feminismos españoles contemporáneos. Señala que en estos campos este giro cultural ha supuesto una ampliación de los objetos, las perspectivas y las categorías de análisis relacionadas con lo político, en un contexto historiográfico reciente más amplio y receptivo a una renovación profunda de los interrogantes sobre el pasado y de sus marcos interpretativos. Plantea que entre sus múltiples aportaciones han sido particularmente rompedoras aquellas que amplían y problematizan la noción de sujeto político. El texto se interroga sobre el modo en el que se construye en cada contexto histórico concreto ese sujeto, para lo que resulta fundamental atender a las categorías a través de las cuales es definido y a la lucha que se establece por fijarlas en la esfera pública entre las diversas culturas políticas. Plantea, en concreto, la importancia que ha tenido situar en el centro de los marcos analíticos recientes la pugna por definir el significado de nación o de mujer a través del largo siglo xix a la hora de repensar la formación de las identidades políticas modernas de la España contemporánea.
50 números de Historia y Política: Un balance historiográfico
Authors: Moreno Almendral Raúl
Published: February 2024

Este artículo analiza la trayectoria de la revista Historia y Política en sus primeros cincuenta números y la inserta en el marco de la evolución de la historiografía española durante los últimos veinticinco años. Se estudia la construcción de la relevancia de la revista a través de la calidad de su contenido, muy sintonizado con muchas preocupaciones historiográficas vigentes, y a través de la integración en el modelo de visibilidad marcado por la bibliometría. En este sentido, la historia de la revista puede utilizarse para reflexionar sobre las tendencias presentes en la reciente historiografía contemporaneísta española.
Los enemigos enmascarados de la República: Los jueces y la «Republicanización» de la Justicia en la primavera española de 1936
Authors: Álvarez Tardío Manuel
Published: February 2024

Este artículo se ocupa de la relación entre el funcionamiento del sistema político de la Segunda República española y la Administración de Justicia. Se analiza específicamente el período comprendido después de las elecciones generales de 1936 y hasta el 17 de julio de ese mismo año. Mediante diversas fuentes primarias archivísticas, hemerográficas y parlamentarias se describe, contextualiza y analiza el propósito y alcance de la idea de «republicanización» de la Justicia postulada por los integrantes del pacto de Frente Popular, clarificando también las diferencias que hubo entre ellos. Al respecto, se aportan datos novedosos y significativos sobre la complejidad y los desafíos que rodearon la labor de los jueces en unas circunstancias de aumento de la violencia política. Además, se reconstruye el contexto de debate y polémicas públicas a propósito del comportamiento de algunos jueces y cómo eso coadyuvó a la presentación y defensa parlamentaria de un amplio e importante paquete de reformas legislativas relacionadas con la cuestión judicial.
Factors affecting long-term prognosis in adult patients with psychogenic non-epileptic seizures
Authors: Turksever Meliha , Guldiken Baburhan , Ozkan Hulya , Cakar Merve Melodi
Published: February 2024

Background and purpose – Among epileptic patients who are monitored using the video-electroencephalography monitoring (VEM) technique, in some patients a psychogenic non-epileptic seizure (PNES) can be identified as a definitive diagnosis. The longterm prognosis of these patients is not well known. In this study, we aimed to determine the factors that affect the prognosis of PNES. Methods – Forty-one PNES patients diagnosed using VEM between 2012 and 2022 were questioned about their PNES frequencies in the last 12 months. According to their semiological characteristics, PNES types were divided into motor and non-motor seizures. The effects of clinical characteristics (e.g. age, gender, marital status, education level and PNES type) on the prognoses were identified. Results – Twenty-one PNES patients (51.2%) had long-term seizure freedom after VEM. Thirteen of them (31.7%) entered the seizure-free period immediately after VEM, and the other eight (19.5%) continued suffering from PNES for several years and became seizure free in the last 12 months. In the poor-prognosis group, female cases showed worse prognoses than male cases. The prognoses of motor and non-motor PNES types did not show significant differences. Conclusion – This study showed that 51.2% of the PNES patients examined had long-term seizure freedom and that female patients had worse prognoses than male patients.
Glioblastoma epigenomics discloses a complex biology and potential therapeutic targets
Authors: Krabóth Zoltán , Tompa Márton , Urbán Péter , Gálik Bence , Kajtár Béla , Gyenesei Attila , Kálmán Bernadette
Published: February 2024

Background and purpose – Glioblastoma (GBM), a highly aggressive form of brain tumors, has been extensively studied using OMICS methods, and the most characteristic molecular determinants have been incorporated into the histopathological diagnosis. Research data, nevertheless, only partially have been adopted in clinical practice. Here we aimed to present results of our epigenomic GBM profiling to better understand early and late determinants of these tumors, and to share main elements of our findings with practicing professionals. Methods – GBM specimens were surgically obtained after first diagnosis (GBM1) and at recurrence (GBM2). DNA was extracted from 24 sequential pairs of formalin-fixed, paraffin-embedded tumor tissues. The Reduced Representation Bisulfite Sequencing kit was used for library preparation. Pooled libraries were sequenced on an Illumina NextSeq 550 instrument. Methylation controls (MC) were obtained from a publicly available database. Bioinformatic analyses were performed to identify differentially methylated pathways and their elements in cohorts of MC, GBM1 and GBM2. Results – Several differentially methylated pathways involved in basic intracellular and brain tissue developmental processes were identified in the GBM1 vs. MC and GBM2 vs. MC comparisons. Among differentially methylated pathways, those involved in immune regulation, neurotransmitter (particularly dopaminergic, noradrenergic and glutaminergic) responses and regulation of stem cell differentiation and proliferation stood out in the GBM2 vs. GBM1 comparisons. Conclusion – Our study revealed biological complexity of early and late gliomagenesis encompassing mechanisms from basic intracellular through distorted neurodevelopmental processes to more specific immune and highjacked neurotransmitter pathways in the tumor microenvironment. These findings may offer considerations for therapeutic approaches.
A Geometric Flow Approach for Segmentation of Images with Inhomongeneous Intensity and Missing Boundaries
Authors: Mohapatra Paramjyoti , Lartey Richard , Guo Weihong , Judkovich Michael , Li Xiaojuan
Published: February 2024

Image segmentation is a complex mathematical problem, especially for images that contain intensity inhomogeneity and tightly packed objects with missing boundaries in between. For instance, Magnetic Resonance (MR) muscle images often contain both issues, making muscle segmentation especially difficult. In this paper we propose a novel intensity correction and a semi-automatic active contour-based segmentation approach. The approach uses a geometric flow that incorporates a Reproducing Kernel Hilbert Space (RKHS) edge detector and a geodesic distance penalty term from a set of markers and anti-markers. We test the proposed scheme on MR muscle segmentation and compare with some state-of-the-art methods. To help deal with the intensity inhomogeneity in this kind of image, a new approach to estimate the bias field using a fat fraction image, called Prior Bias-Corrected Fuzzy C-means (PBCFCM), is introduced. Numerical experiments show that the proposed scheme leads to significantly better results than compared ones. The average dice values of the proposed method are 92.5%, 85.3%, 85.3% for quadriceps, hamstrings and other muscle groups while other approaches are at least 10% worse.
Musical Note Position and Duration Recognition Model in Optical Music Recognition Using Convolutional Neural Network
Authors: Nugroho Douglas Rakasiwi , Zahra Amalia
Published: February 2024

This study aims to solve Optical Music Recognition (OMR) problems using a non-End-to-End (non-E2E) approach. Therefore, separate models for Position Recognition (PR) and Duration Recognition (DR) are constructed, with both employing Convolutional Neural Networks (CNN). In terms of constructing a non-E2E architecture to solve OMR problems, this study obtains superior evaluation results compared to previous research, with the PR and DR models achieving accuracies of 97.88% and 99.23%, respectively. In addition, this study employs template matching in conjunction with several supplementary tasks to identify the positions of musical notes and generate the corresponding note sequences in the intended reading format. Our Optical Music Recognition (OMR) system can accomplish comparable results to the E2E architecture by utilizing these techniques.
Análisis teórico de la incidencia del vector de magnetización en el plano de la barrera sobre la TMR a temperatura cero
Authors: Zuñiga Julián A.
Published: February 2024

En el presente trabajo se realiza un análisis teórico del transporte de espín en un heteroestructura tipo pseudoválvula de espín (PSV) conformada por dos ferromagnéticos (FM) separados por un semiconductor (SC). Para el SC se considera la banda de conducción en el punto Γ del espacio recíproco y el acoplamiento espín órbita (SOC); para los electrodos FM se tiene encuentra la energía de intercambio interna (∆ j) y una magnetización espontanea. Se obtuvo una expresión analítica para la probabilidad de transmisión función del vector director magnetizaci´ón (n j). Además, se calculó la magnetorresitencia por efecto tunel (TMR) a T = 0 K dependiente del espesor del SC mediante las fórmulas de Landauer-B¨uttiker para un canal y se observa que esta obtiene su valor máximo cuando la dirección nl (fijo) es paralelo al eje [0 1 0]. Además al aplicar el modelo fisicomatemático propuesto a la PSV Fe/SC/Fe, con SC como: GaAs, GaSb y InAs, se observó que el SOC Dresselhaus no contribuye a la TMR.
EFECTO DE LAS SUPERFICIES E INTERFACES EN LAS PROPIEDADES DE LA MATERIA
Authors: Gómez María Elena , Marín Lorena , Díez Díez , Caicedo Julio César , Villareal Marlon , Escobar César
Published: February 2024

Discutimos el efecto sobre las diferentes propiedades físicas que tienen las interfaces en materiales crecidos artificialmente en forma de heteroestructuras cuando sus dimensiones están en la escala nanométrica. Específicamente presentamos resultados de propiedades magnéticas en bicapas ferromagnética / antiferromagnética de la manganita de lantano dopada con calcio; las propiedades mecánicas y de corrosión en superredes de nitruros de metales de transición TiN/ZrN y HfN/VN.
EDITORIAL
Authors: Aleixo Lúcia Helena Gaeta
Published: February 2024

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PRÁTICA DO ENFERMEIRO NO MANEJO DAS TERAPIAS ALTERNATIVAS FRENTE A DOR CRÔNICA
Authors: Adriana Oliveira Magalhães  , Dayane Santos Oliveira Costa  , Leidiane Cristina Gomes Metelo  , Luana Pontes da Silva  , Vera Lúcia da Silva
Published: February 2024

As terapias alternativas são consideradas opções eficazes de cuidado e terapia em condições de dores severas. Admite-se que sua prática traga conforto e devolva qualidade de vida ao paciente. Este estudo teve por objetivo analisar a prática do enfermeiro no manejo as terapias alternativas frente a dor crônica. Foi uma pesquisa descritiva, qualitativa e exploratória. A coleta de dados foi realizada após aprovação pelo CEP – Comitê de Ética em Pesquisa do UNIVAG – Centro Universitário de Várzea Grande, após assinatura do Termo de Consentimento Livre e Esclarecido (TCLE). A pesquisa foi realizada através de aplicação de questionário semiestruturado via Google Forms com 07 profissionais que se dispuseram a participar do estudo. Diante das respostas, as categorias com análise de conteúdo foram Percepção dos Enfermeiros na Dor Crônica, Impactos da Dor Crônicas na Vida das Pessoas, Benefícios da Terapia Alternativa para a Dor Crônica, Enfrentamentos dos Profissionais  no Cuidado à Dor Crônica pela Terapia Alternativa, e Importância da Utilização de Instrumentos para mensuração da Dor, pelas quais identificou-se o conhecimento dos profissionais, suas técnicas, benefícios e dificuldades no manejo das terapias alternativas frente aos processos de dor crônica, assim como a colaboração do enfermeiro na retomada e manutenção de qualidade de vida das pessoas portadoras de dores crônicas. A pesquisa demonstrou que o enfermeiro na atenção ao cuidado da dor crônica através das terapias alternativas pode contribuir ao processo de retorno à melhora e à qualidade de vida de indivíduos com dor crônica junto à família e sociedade.
Optimizing safety performance through risk-based modeling in Nigeria’s oil and gas sector
Authors: Zacchaeus Mgbowaji , Ugbebor John , Agbagwa Ikechukwu , Orikpete Ochuko Felix
Published: February 2024

The Nigerian oil and gas sector is fraught with safety challenges that undermine operational integrity and worker welfare. Addressing these issues requires a nuanced risk-based intervention and modeling approach to improve safety performance. This study investigated the safety challenges in Nigeria's oil and gas sector, focusing on identifying and addressing hazards to enhance operational integrity and worker welfare. A semi-quantitative approach was used to develop a comprehensive hazard checklist, aligned with ISO standards and expert insights. Data on hazard likelihood and severity were gathered through questionnaires distributed among a diverse group of industry experts, workers, and stakeholders. The analysis highlighted key risks like inadequate infrastructure, valve and seal failures, security concerns, and oil spill risks, underscoring the need for targeted interventions to promote a safer working environment and reduce accident risks.
Psicología y Educación. Una aproximación a estudios recientes de ámbitos, facetas y contextos de desarrollo
Authors: Isaza Valencia Laura
Published: February 2024

Este libro presenta contribuciones de estudios empíricos, básicos o aplicados realizados en diferentes ámbitos educativos (educación formal, no formal e informal) en los últimos dos años. En cada capítulo se hace énfasis en temas que son transversales y de interés investigativo en el campo educativo y de la psicología educativa. Desde la línea de psicología educativa y contextos de desarrollo del Grupo Emoción, cognición y comportamiento -ECCO- de la Facultad de Psicología de la UPB, se propone con la publicación de este libro promover la divulgación y visibilidad de trabajos empíricos, de sistematización de experiencias educativas y reflexiones teóricas que retomen situaciones educativas actuales, como producto de investigaciones en las que han participado investigadores del Grupo ECCO con financiación interna o externa a la Universidad Pontificia Bolivariana, trabajos de grado de estudiantes de pregrado y postgrado vinculados a proyecto de investigación del Grupo.
导流板对数据中心气流组织优化及节能的模拟与实验研究
Authors: 马博洋  , 刘海勇  , 杜亚慧  , 杨晓晨  , 周志华  , 路洁  , 谌莹
Published: February 2024

数据中心气流组织直接影响数据机房的室温控制及供冷设备的能效。鉴于数据机房底层服务器由于距离开孔地板过近、气流的水平速度分量小，导致下层服务器风量不足、冷却效果较差问题，本文通过安装导流板的方式提升机柜级别垂直方向的气流均匀性，从而改善机房内整体气流组织效果。基于多工况实验和数值模拟相结合的方法优化数据中心的导流板结构尺寸及布置形式。研究结果表明，对于单侧机柜送风，建议在开孔地板下方安装宽度为100 mm、角度为45°的导流板；对于两侧机柜送风，导流板宽度为100 mm且与开孔地板呈30°角度安装可以获得最佳的气流组织效果，机柜底层服务器的进风量明显增加，降低了发生局部热点的风险。最后，基于最优的导流板布置形式对某真实数据中心机房的气流组织开展ANSYS模拟仿真，对比实际未安装导流板的情况，导流板的优化布置使机柜的进风量增加16.98%，提升机房空调能效达1.98%。
Percepcja produktu w kontekście przekazu reklamowego – analiza na podstawie dwu metod badania podobieństwa
Authors: Banaszczyk Małgorzata
Published: February 2024

The purpose of the study was to show that interpretation of observed objects depends on the context (in this case context was the advertisement) in which they are seen. The second goal was to show the equivalence of two methods used to investigate similarity between objects – affinity index and comparison in pairs. The group of 180 people aged 19–32 participated in the study. They valuated similarity between three identical objects but advertised in three different ways. Using multidimensional scaling method the perception maps of the three products were created. Data unequivocally proved that they were seen as dissimilar. The Pindis procedure revealed that both methods used to investigate similarity are methodologically equivalent. They can be used interchangeably.
Mineração na Amazônia
Authors: Sousa Suzy , Mathis Armin
Published: February 2024

O desfecho de um processo judicial depende da preparação e do aparelhamento dos litigantes. As condições sociais, econômicas e culturais dos litigantes também podem ser fatores determinantes para o sucesso de um indivíduo em relação a outro. Ao investigar decisões judiciais liminares proferidas em ações possessórias envolvendo a empresa Vale S.A., quando a mineradora litiga em face de partes com poder econômico inferior, verificamos que há uma tendência para que as decisões sejam favoráveis à mineradora, evidenciando o modelo frequentemente irreal no qual duas ou mais partes, em igualdade jurídico-formal, enfrentam-se perante a Corte. As vantagens econômicas, políticas e organizacionais colocam a Vale em um ponto de partida vantajoso no contexto de um embate judicial quando enfrenta pessoas físicas ou jurídicas detentoras de recursos econômicos e informações insignificantes em comparação com aquela grande corporação. Da mesma maneira, demonstra-se o papel do Estado, por meio das decisões proferidas pelo Poder Judiciário, como agente indutor e facilitador dos interesses da mineradora. Essas desigualdades entre os polos processuais impedem o acesso pleno à justiça.
Penataan Ruang Perkotaan di Gresik Masa Pemerintahan Bupati Sambari Halim Radianto tahun 2010-2020
Authors: Sulaiman Muhammad , Sasmita Nurhadi
Published: February 2024

Penelitian ini membahas Penataan Ruang Perkotaan di Gresik Masa Pemerintahan Bupati Sambari Halim Radianto Tahun 2010-2020. Permasalahan penelitian adalah apa faktor yang menyebabkan perlunya penataan Kota Gresik, bagaimana proses penataan ruang kota di Gresik, dan apa upaya Bupati Sambari Halim Radianto dalam mengelola dan menata ruang kota di Gresik tahun 2010-2020. Metode sejarah digunakan untuk rekonstruksi peristiwa, yang meliputi heuristik, kritik, interpretasi dan historiografi. Sumber kajian berasal dari arsip, laporan, buku, jurnal, dan karya penelitian lainnya yang relevan. Teori yang digunakan adalah teori perencanaan tata ruang. Hasil penelitian menunjukkan bahwa, penataan Kota Gresik awalnya pada kepemimpinan Bupati Soefelan tahun 1973-1978, dengan melakukan pemindahan pusat pemerintahan, rumah dinas bupati, dan seluruh kantor instansi yang ada. Penataan kota selanjutnya dilakukan oleh Bupati Robbach Ma’sum tahun 2000-2010, dengan membagi sistem permukiman perkotaan sesuai dengan hirarki dan fungsi kota. Herarki dibagi atas tiga bagian, Kota Orde I, Kota Orde II, dan Kota Orde III. Tahun 2010, Sambari Halim Radianto terpilih menjadi bupati, kemudian kembali melakukan penataan kota. Penataan kota dengan memindahkan Gedung DPRD, Mapolres, dan membangun Mall Pelayanan Publik untuk keperluan pelayanan masyarakat. Bupati Sambari juga membuat landmark sebagai identitas Kota Gresik. Landmark tersebut adalah Tugu Lontar yang terletak di Putat Luar, Sukorame. Kedua adalah Tugu Gajah Mungkur yang terletak di sudut perlimaan Sukorame. Ketiga, Tugu Menara Gardu Suling yang terletak di Pulopancikan, Kec. Gresik. Keempat, adalah Tugu Keris Sumilang Gandring. Hasil penelitian menunjukkan bahwa penataan Kota Gresik dilaksanakan masa Bupati Sambari. Penataan kota berguna untuk meningkatkan daya tarik kota dan meningkatkan perekonomian masyarakat.
Borik Asidin Endoplazmik Retikulum Stresiyle İlgili Proteinler Aracılığıyla Glioblastoma Hücreleri Üzerindeki Antiproliferatif Etkileri
Authors: HACIOĞLU Ceyhan
Published: February 2024

Endoplazmik retikulum (ER) stresi, metabolizma homeostazının düzenlenmesinde ve gliomalar dahil çeşitli kanserlerin fizyopatolojisinde rol alır. İnsanlar için eser element olan bor, deneysel ve epidemiyolojik çalışmalarda potansiyel kanser karşıtı özellikler göstermiştir. Bu çalışma, borik asidin insan glioblastoma (GBM) hücrelerindeki ER stresi sinyalizasyonuyla hücre canlılığı, apoptoz ve oksidan durum üzerindeki etkilerini araştırmayı amaçlamaktadır. Çalışma, MTT analizi kullanılarak borik asidin (0-1600 µM) U251 hücre canlılığı üzerindeki sitotoksik etkisini değerlendirdi. Borik asitle tedavi edilen hücrelerde GRP78, ATF4, CHOP, sitokrom c, kaspaz 3, kaspaz 12, toplam oksidan durum (TOS), toplam antioksidan durum (TAS) ve oksidatif stres indeksi (OSI) seviyelerini belirlemek için spektrofotometrik ölçümler yapıldı. U251 hücrelerinin borik aside maruz bırakılması, hücre canlılığında konsantrasyon ve zaman bağımlı bir düşüşe neden oldu. MTT analizi göre, borik asidin 24, 48 ve 72 saat IC50 sırasıyla değerleri 312,7 μM, 208,6 μM ve 115,2 μM olarak belirlendi. Borik asit, U251 hücrelerinde sitokrom c, kaspaz 3 ve kaspaz 12 düzeylerini konsantrasyona bağlı olarak arttırdı. U251 hücrelerinde sitokrom c seviyeleri yaklaşık 3 katlık, kaspaz 3 seviyeleri yaklaşık 2 katlık ve kaspaz 12 seviyeleri yaklaşık 2 katlık artışla 312,7 μM borik asit konsantrasyonunda tespit edilmiştir. Ek olarak borik asit tedavisi, U251 hücrelerinde TOS ve OSI'yi önemli ölçüde artırdı. Ayrıca, GRP78 ve ATF4 seviyeleri borik asitle tedavi edilen hücrelerde konsantrasyona bağlı bir azalma gösterdi. Tersine borik asit, U251 hücrelerinde CHOP seviyelerini konsantrasyona bağlı bir şekilde arttırdı. Özetle, borik asit GBM hücrelerinde ER stresini tetikleyerek apoptozu ve oksidatif stresi indükledi. Bu olumlu özellikleriyle borik asit, GBM'nin tedavisinde potansiyel bir terapötik ajan olabilir.
Tumor-associated antigen targets for novel immune-based strategies in prostate cancer
Authors: Bhasin Amman , Mille Patrick J. , Eturi Aditya , Iskander Andrew , Tester William , Zarrabi Kevin K.
Published: February 2024

Prostate cancer remains the most common malignancy among men in the United States. Advancements in androgen receptor signaling blockade have led to landmark approvals for its use in patients with locally advanced and metastatic disease. However, additional novel therapeutic strategies for both hormone-sensitive and castration-resistant diseases remain ongoing areas of study. Thus, we turn to the growth of immuno-oncology, which has led to improved treatment outcomes for a variety of hematologic and solid tumor malignancies. Prostate cancers have shown only modest results with immune checkpoint inhibition in published trials, and innovative strategies are now looking into enhancing cytotoxic T-cell activity against cancer cells. This review provides a thorough evaluation of tumor-associated antigens that are integrated into novel chimeric antigen receptor T-cell and bispecific T-cell engager therapies. Our review will evaluate the most recent advancements in immunotherapies, while also illustrating major obstacles and underlying limiting factors.
Global Research Cooperation Patterns in the Secondary Battery Industry
Authors: AN HOJIN , CHO KEUNTAE
Published: February 2024

The purpose of this study is to analyze how global research cooperation patterns in the secondary battery industry have changed over recent years and to identify the evolution in the focus of research. To this end, network analysis was performed using the nationality information of the authors of a 10-year multinational joint research paper related to lithium-ion batteries. Furthermore, keyword analysis and topic modeling were performed using the abstract data from the study. The results of this study confirm that some countries that are not well-known in the field, such as Australia, Spain, and France, showed high centrality, compared with the level of cooperation scale. Additionally, six research topics were identified. According to a comparison over the first half of the decade, no difference was observed in the appearance of keywords indicating high energy density and conductivity with lithium, a key mineral. Keyword distribution was high for topics like battery charging and discharging in the first half of the decade, and for next-generation battery materials, such as solid electrolytes, lithium metal anodes, and lithium-sulfur batteries in the second. These results provide insights into the establishment of R&D cooperation strategies by countries and pre-planning by companies in the battery industry.
A Positive Experience Design Model: The Product Attachment Perspective
Authors: Wu Chunmao , Chen Lili
Published: February 2024

This paper proposes a product design model for internalising users’ positive experiences through attachment. First, the research commences with a literature review to define the concepts and research status of positive experience design (PED) and product attachment. Subsequently, the design model is constructed, accompanied by relevant formulas for concept generation. Finally, the model’s validity is verified through a workshop, and its effectiveness is evaluated and discussed using the USE questionnaire. This study incorporates the seven factors of product attachment to activate positive states within the user–product relationship and facilitate the cultivation of positive thinking. Grounded in theories of PED and embracing a product attachment perspective, the attachment-driven PED model offers a systematic approach for generating design concepts that are relevant to user experience.
Relations économiques de la basse andalouise avec le maroc atlantique (milieu XV- milieu du XV siècle)
Authors: Rosenberger Bernard
Published: February 2024

Este tratado analiza el comercio en el Atlántico entre los puertos de Andalucía y Marruecos durante la segunda mitad del siglo XV y la primera mitad del siglo XVI, e intentará arrojar luz sobre sus características y evolución.
Crianza Real y clientelismo nobiliario: Los Bobadilla, una familia de la oligarquía granadina
Authors: Peinado Santaella Rafael G. , Soria Mesa Enrique
Published: February 2024

La familia Bobadilla representa un maravilloso ejemplo de las numerosas familias burocráticas -en este caso de origen judeoconverso- que se incrementaron en riqueza y posición social bajo los auspicios de la Corona durante el reinado de Fernando e Isabel. Desde una posición anterior de importancia local en Segovia, la familia Bobadilla asistió en la conquista del Emirato Granadino y recibió mercedes sustanciales en forma de tierras dentro del Reino de Grenada; estas propiedades se incrementaron aún más por medio de compras y usurpaciones. Junto a su riqueza, meticulosamente analizada en este proyecto, su ascenso social se debió a su cióse afiliación a los Condes de Tendilla, sus familiares y protectores, con quienes colaboraron en el difícil, pero fructífero, gobierno del territorio recién conquistado.
Perentesco y consolidación de la aristocracia en los inicios de la corona de Castilla (siglos XI-XIII)
Authors: Beceiro Pita Isabel
Published: February 2024

Este artículo examina la relación entre el poder político y territorial y vínculos de parentesco entre la aristocracia del reino de Castilla durante los siglos XI al XIII. En la primera parte, referente a las dos primeras centurias, traza una síntesis de los principales problemas en torno al reparto de la herencia, la política matrimonial, el acceso y sucesión a los cargos de gobierno del reino, el papel de la mujer en la vida pública y privada y el sentimiento de identidad del grupo familiar. En la segunda parte, plantea los interrogantes básicos sobre la transición de la parentela al linaje.
Orden público y violencia en la ciudad de Málaga a fines del siglo XVy principios del s. XVI (1495-1516)
Authors: Cruces Blanco Esther
Published: February 2024

Robos, pleitos, agresiones físicas y verbales, malos tratos, fugas; acciones y situaciones que creaban un clima de violencia que en algunos momentos y circunstancias fue bastante grave. Todo ello acontecía en el ámbito urbano, un espacio relativamente estrecho y cerrado, donde la violencia parece exacerbarse por la misma concentración de los elementos y situaciones generadoras de la agresividad. Si en las ciudades populosas de los siglos XV y XVI siempre existieron elementos belicosos y situaciones de fanatismo, en la Málaga de los años 1495-1516 hay que añadir el aporte de agresividad que entraba por el puerto y un factor que incrementaba la situación de violencia que en toda la ciudad podía existir: el problema morisco.
Los derechos sobre la tierra en el sector centro-oriental de la Extremadura castellana. Usos y abusos afines de la Edad Media.
Authors: Quintanilla Raso Concepción
Published: February 2024

El régimen de propiedad y los derechos y usos de la tierra se encontraban, a fines del período medieval, directamente condicionados por las circunstancias físicas, pero también, y, sobre todo, por la superposición de los intereses de los distintos sectores sociales. La situación se presentaba especialmente compleja en aquellos territorios de tradicional explotación comunitaria, donde el proceso de diferenciación social, con la consolidación de una oligarquía urbana, la presencia del campesinado, y de un sector enriquecido en el mismo, y la implantación de una poderosa nobleza señorial, determinó un panorama de imprecisión y multiplicación de los derechos sobre la tierra, en medio de fuertes tensiones. El caso de Cuenca, en el sector centro-oriental de la Extremadura castellana, presenta particular interés, y constituye un escenario muy adecuado para observar los procesos por los que la propiedad particular y los usos privatizados se abrieron paso, produciendo la ruptura del sistema de organización comunal.
De nuevo sobre cautivos cristianos en el Reino de Granada.
Authors: Cabrera Emilio
Published: February 2024

El cautiverio de cristianos en tierras islámicas fue uno de los problemas más dramáticos de cuantos se presentaban en la frontera de Granada. El presente trabajo aborda el estudio de ese tema a través de visión que proporciona la documentación cordobesa del siglo xv. Debido al papel primordial que Córdoba desempeñó en la defensa de la Frontera, esta ciudad canalizaba una buena parte de la actividad liberadora emprendida tanto por las órdenes redentoras de cautivos como por diferentes instituciones locales.
Los Castillos de la orden de Alcántara en el partido de la Serena (ss. XIII-XV).
Authors: Novoa Portela Feliciano , Villalba Ruiz de Toledo Francisco Javier
Published: February 2024

Dentro de las nuevas líneas metodológicas aplicadas al estudio de las fortalezas medievales y de las órdenes militares, analizamos en este trabajo el papel desempeñado por los enclaves defensivos de la Orden de Alcántara en la comarca de La Serena desde la primera mitad del siglo XIII. Para ello, nos detenemos en primer lugar en la conquista de un territorio vital para la aspiración del dominio cristiano sobre la Baja Extremadura y Córdoba y, a continuación, observamos las particularidades del sistema defensivo, con especial detenimiento en las vías de comunicación, y de la organización feudal que se desarrolla en la zona a partir de ese momento.
Prosopografía de la Orden de Calatrava en Castilla: la primera mitad del siglo XV.
Authors: Rodríguez-Picavea Matilla Enrique
Published: February 2024

El artículo reconstruye la prosopografía de la Orden de Calatrava en el reino de Castilla durante la primera mitad del siglo XV. Se incluyen en esta prosopografía todos los individuos pertenecientes a la institución, tanto laicos como clérigos. La biografía de cada personaje se ha completado, cuando ha sido necesario, remontándola a fechas anteriores a 1401 o prolongándola a fechas posteriores a 1450. El esquema ideal de cada biografía incluye el parentesco, la fecha de nacimiento, la trayectoria vital del personaje, la fecha de fallecimiento y el lugar de enterramiento, aunque con frecuencia no ha sido posible averiguar todos estos datos. La documentación utilizada procede fundamentalmente de la sección de Órdenes Militares del Archivo Histórico Nacional y de la colección Salazar de la Real Academia de la Historia.
La frontera de Granada. Perspectivas y planteamientos.
Authors: Rojas Gabriel Manuel
Published: February 2024

Este artículo consiste en un estudio analítico de nuestro actual estado de conocimientos acerca de la frontera de Granada -donde no se resta ni un gramo de importancia al rico caudal de información que hemos ido acumulando-, pero en el que se plantea el problema de cómo estamos manejando y entendiendo ese conjunto de noticias. En gran medida, se pone el acento en la circunstancia de que se ha continuado empleando la interpretación tradicional hasta más allá de lo que sería aconsejable, una explicación que fue válida y elegante cuando vio la luz décadas atrás, pero que no hay que olvidar que fue una primera lectura y que, gracias precisamente a la gran cantidad de información que se ha ido reuniendo, salta a ojos vista que debe revisarse en profundidad. La idea matriz propuesta es que, quizás, para algunos investigadores gustaría que la realidad de la frontera granadina hubiera sido otra, pero que hay que aceptar que esa linde no unía, sino que separaba a dos sociedades distintas y enfrentadas y que, por consiguiente, el lenguaje más común era la más pura violencia, sus manifestaciones y derivaciones.