bluuebunny/crossref_metadata_2025 huggingface dataset:
How K-12 Teachers Adapt Problem-Based Learning Over Time
Authors: Tawfik Andrew A , Gishbaugher Jaclyn J , Gatewood Jessica , Arrington T. Logan
Published: August 2021

Teachers adapt their instructional strategies over time based on a variety of contextual constraints. In response to these challenges, teachers often have to make changes to their PBL approaches. While the literature has documented generally positive results of initial PBL implementations, less is known about the degree to which teachers adapt their usage of PBL over time. Some adaptations include a refined approach to teaching strategies, while others include significant diversions from the original PBL model. A better understanding of the changes teachers enact provides important insight as to fidelity and thus the expected learning outcomes of PBL. To address this gap, this research conducted semi-structured interviews with experienced K-12 educators who employed PBL over multiple years. In terms of preparing for PBL, themes that emerged from the interviews included more emphasis on reimagining the problem scope and design thinking. During classroom time, teachers described shifting perspectives in terms of the following: problem-solving skills over content knowledge, student control and teacher facilitation, and embracing failure. Relating to technology, teachers described more adoption trends towards collaborative tools, while also describing opportunities and challenges with digital literacy. Finally, teachers described strategic approaches to assessment in light of the ill-structured problems posed by PBL. Implications for practice and theory are discussed.
CARREIRA DA SILVA, Filipe, and Mónica BRITO VIEIRA. 2019. The Politics of the Book: A Study of the Materiality of Ideas.
Authors: Frankel (279–83) Oz
Published: August 2021

Review
DICUIRCI, Lindsay. 2018. Colonial Revivals: The Nineteenth-Century Lives of Early American Books.
Authors: Larkin (283–87) Edward
Published: August 2021

Book Review
Aperfeiçoamento estético do sorriso com colagem otimizada de laminados biomiméticos
Authors: Marcondes Rogerio , Veras Tiago , Soares Cristiano , Carvalho Marco Aurélio de
Published: August 2021

O presente relato de caso objetiva apresentar e discutir o trata- mento estético de um sorriso com laminados em cerâmica felds-pática colados em preparos guiados pelo ensaio restaurador pela técnica da resina termomodificada sob controle de umidade com isolamento absoluto. Após avaliação clínica, fotográfica e com modelos, planejou-se o aprimoramento estético do sorriso com facetas cerâmicas. Com o enceramento diagnóstico, obteve-se guias para o ensaio restaurador e preparos dentais. Após moldagem, os laminados cerâmicos foram confeccionados pela técnica de troquel refratário, seguidos pela prova seca e molhada. Seguiu-se com isolamento absoluto do campo operatório, colagem restauradora com resina termomodificada e acabamento das margens. A expectativa do paciente foi alcançada por meio da previsibilidade garantida pelo correto diagnóstico, teste do planejamento pelo ensaio restaurador e colagem otimizada das facetas feldspáticas.
Decoronação sem e com implantes: o que é e quando se utiliza
Authors: Consolaro Alberto , Cardoso Maurício de Almeida , Miranda Dario A. Oliveira , Oliveira Ingrid Araújo de
Published: August 2021

Introdução: Decoronação é uma técnica terapêutica para os dentes anquilosados depois de traumatismos dentários, que evoluem naturalmente para reabsorção dentária por substituição, para se evitar sequelas pós-cirúrgicas. Mas ela também pode ser indicada para várias outras situações clínicas. Descrição: Os dentes em anquilose alveolodentária e reabsorção dentária por substituição devem ser considerados osso normal, em pleno processo contínuo e fisiológico de remodelação. Em consequência, os implantes osseointegráveis podem ser aplicados com sucesso, se assim for necessário, pois haverá a osseointegração. É essencial para o sucesso da decoronação a ausência de contaminação, a qual representa a sua contraindicação. Considerações finais: O local, a angulação e o posicionamento para se colocar o implante após a decoronação devem ser ditados pela conveniência clínica. Ela não deve mudar o planejamento normal para a instalação de implantes e, nem mesmo, mudar os critérios de escolha do tipo e da marca de implante dentário a ser utilizado.
Carbon Smile Clinic
Authors: Calicchio Luis , Schneider Gabriela
Published: August 2021

O conceito da Carbon Smile Clinic nasceu da intenção de oferecer ao cliente um tratamento exclusivo e privativo, com um ambiente reservado somente para ele, seguindo rígidos protocolos de segurança durante o atendimento. O conceito é o “Slow Dentistry”, no qual o paciente é o foco principal, recebendo toda a atenção da equipe, sem distrações e atividades paralelas, permitindo a execução de uma Odontologia de alta performance integrada à alta tecnologia, para otimização de tempo e resultados. Para isso, o projeto de arquitetura deveria transmitir o conceito moderno, tecnológico e minimalista, aproveitando ao máximo o espaço e garantindo uma mobilidade adequada para toda a equipe e o paciente.
Procedimentos adesivos na Odontologia Restauradora. Parte 1: adesivos dentais
Authors: Fadanelli Marcos Alexandre
Published: August 2021

Olá, leitor! Uma das áreas que mais avançou na Odontologia foi a restauradora. Diversos materiais, técnicas e tecnologias foram desenvolvidos nos últimos anos. Tal avanço visa a realização de procedimentos mais rápidos, simples e menos invasivos em relação aos tecidos dentais. Para tanto, os procedimentos adesivos são de extrema importância para o sucesso em longo prazo na cadeia restauradora. A compreensão da estrutura dos tecidos dentais, assim como dos diferentes tipos de sistemas adesivos, é fundamental para o processo restaurador.
Effect of Shape Modification on I Girder and Box Girder Prestressed Concrete to Stiffness and Displacement
Authors: Prayuda Hakas
Published: August 2021

Prestressed concrete has been widely used in structural buildings, especially for big span length purposes. The prestressed concrete dimension cross sections normally are fixed, provided by the factory based on their experience for every span length. However, this size aspect can be developed to make better improvement. In this study, I and box girder shapes were modified with the same total cross-sectional area. Three types of modification have been made for each girder shape by giving the space on the middle for I girder and changing form from trapezoidal to rectangular section for box girder. The number of steel tendons for this research was made typically and same so that the stress and displacement can be compared fairly. Manual calculation was performed for all samples and was completed under three circumstances namely initial condition, loading condition, and final condition. Also, the manual calculation is according to Indonesian provisions, which are SNI 2833-2016 for the earthquake load and SNI 1725-2016 for normal loading on bridges. From the result, it is known that one shape for each girder shape has met the criteria for the smallest stress and displacement.
Seismic Behavior of RCS Composite Frame Structure with Rigidity Zone Factor Variations of Beam-Column Connections
Authors: Sudarsana I Ketut , Susila I Gede Adi , Sastraningsih Ni Wayan
Published: August 2021

This research evaluated the effect of connection’s rigidity zone factors of RCS frame’s connections on the seismic behavior of regular RCS frames of a five-story office building located at seismic design category (SDC) of D. The variations on rigidity zone factors were 0, 0.25, 0.50, 0.75, and 1.0, respectively for Model MS, MSR025, MSR05 MSR075, and MR with the same elements’ dimension. A 3-D finite element modeling was conducted to do a linear elastic analysis for structural design and nonlinear static pushover analysis for evaluating the structural seismic performance. The results show that all models have met the strength and serviceability design limits. The seismic performances in terms of base shear, elastic stiffness, and ductility of all RCS models increased with an increase in the values of the rigidity zone factor. The structural performance level according to FEMA 440 was life safety (LS) for the Model MSR05, MSR075, and MR, while for the Model MS and MSR025 was collapse prevention (CP). The seismic energy dissipation for all RCS frames was an intermediate category indicated by the numbers of developed plastic hinges less than 20% of the total potential plastic hinges
Effect of Addition Polypropylene Fiber on Compressive Strength and Permeability Values in Porous Concrete
Authors: Paganggi Wira Rante , Makmur Amelia , Rachmansyah Rachmansyah
Published: August 2021

The infrastructure growth has an impact on reducing green areas, which will be followed by reduced water catchment areas. Porous concrete is one of the porous materials that can be used on a pedestrian walk, which is able to drain water. The porous concrete has a limitation strength. This research aims to determine the effect of using various content of chemical additive and polypropylene fibers for porous concrete mixtures related to the compressive strength and permeability values. This experimental method referring to ACI 522R-10 Standard. That specimens using chemical additives and variations of polypropylene fibers: 0.05%, 0.1%, 0.15%, 0.2%, and 0.25% by weight of cement. The results showed that the specimen which had the highest compressive strength was 16.9 MPa, which was added 0.25% polypropylene fiber. The addition of polypropylene fibers increases the compressive strength value by 5.6%. Based on the compressive strength and permeability graphs, it can be estimated that the optimal content of polypropylene fiber is 0.17% by weight of cement.
Highly sensitive determination of α-lipoic acid in pharmaceuticals on a boron-doped diamond electrode
Authors: Skorupa Agata , Michalkiewicz Slawomir , Jakubczyk Magdalena
Published: August 2021

A simple, highly sensitive, and selective differential pulse voltammetry method for the determination of α-lipoic acid (LA) in pharmaceutical preparations was developed and validated. The method is based on a quasi-reversible, diffusion-controlled, one-electron anodic oxidation of LA on a boron-doped diamond electrode (BDDE) in a McIlvaine (citrate-phosphate, C-PB) buffer solution at pH 3.0. For the first time, this environment was used for LA determination. A linear calibration curve was obtained within the concentration range 5.82 × 10−8to 4.00 × 10−4 mol L−1with a correlation coefficient of 0.9999. The limits of detection was estimated to be 1.94 × 10−8 mol L−1, which is one of the lowest values characteristic of voltammetric and chromatographic methods of LA determination. The proposed procedure is sensitive, accurate, and precise. Its utility was demonstrated in the determination of LA in pharmaceuticals without the need for its separation from the matrices. The results were comparable to those obtained by high performance liquid chromatography reference method and were in good accordance with the once declared by manufacturers. Thus, our method can be considered as an alternative to the dominant chromatographic determinations of α-LA in real samples.
Convolutional neural-network-based classification of retinal images with different combinations of filtering techniques
Authors: Priya Henry Asha Gnana , Jude Anitha
Published: August 2021

Retinal image analysis is one of the important diagnosis methods in modern ophthalmology because eye information is present in the retina. The image acquisition process may have some effects and can affect the quality of the image. This can be improved by better image enhancement techniques combined with the computer-aided diagnosis system. Deep learning is one of the important computational application techniques used for a medical imaging application. The main aim of this article is to find the best enhancement techniques for the identification of diabetic retinopathy (DR) and are tested with the commonly used deep learning techniques, and the performances are measured. In this article, the input image is taken from the Indian-based database named as Indian Diabetic Retinopathy Image Dataset, and 13 filters are used including smoothing and sharpening filters for enhancing the images. Then, the quality of the enhancement techniques is compared using performance metrics and better results are obtained for Median, Gaussian, Bilateral, Wiener, and partial differential equation filters and are combined for improving the enhancement of images. The output images from all the enhanced filters are given as the convolutional neural network input and the results are compared to find the better enhancement method.
The Phoenix Model of Disengagement and Deradicalisation from Terrorism and Violent Extremism
Authors: Silke Andrew , Morrison John , Maiberg Heidi , Slay Chloe , Stewart Rebecca
Published: August 2021

Improving our understanding of how disengagement and deradicalisation from terrorism and violent extremism occurs has critical real-world implications. A systematic review of the recent literature in this area was conducted in order to develop a more refined and empirically-derived model of the processes involved. After screening more than 83,000 documents, we found 29 research reports which met the minimum quality thresholds. Thematic analysis identified key factors associated with disengagement and deradicalisation processes. Assessing the interactions of these factors produced the Phoenix Model of Disengagement and Deradicalisation which is described in this paper. Also examined are some of the potential policy and practice implications of the Phoenix Model, as are avenues for future research in this area.
Photoplasmonic assembly of dielectric-metal, Nd2O3-Gold soret nanointerfaces for dequenching the luminophore emission
Authors: Bhaskar Seemesh , Das Pratyusha , Moronshing Maku , Rai Aayush , Subramaniam Chandramouli , Bhaktha Shivakiran B. N. , Ramamurthy Sai Sathish
Published: August 2021

A variety of materials such as low dimensional carbon substrates (1D, 2D, and 3D), nanoprisms, nanocubes, proteins, ceramics, and DNA to name a few, have been explored in surface plasmon-coupled emission (SPCE) platform. While these offer new physicochemical insights, investigations have been limited to silver as primary plasmonic material. Although, gold nanoparticles (AuNPs) exhibit robust performance, its intrinsic property to quench the emission from radiating dipoles (at distances < 5 nm) has impeded its utility. Despite the use of metal-dielectric resonances (with Au decorated SiO2 NPs) and sharp nanotips (from Au nanostars) for dequenching the emission, the enhancements obtained has been less than 200-fold in SPCE platform. To address these long-standing challenges, we demonstrate the utility of gold soret colloids (AuSCs) and photonic crystal-coupled emission (PCCE) platform. The soret nano-assemblies synthesized using adiabatic cooling technique presented integrated hotspots when taken with high refractive index Nd2O3 ‘Huygens sources’. The collective and coherent coupling between localized Mie and delocalized Bragg plasmons (of sorets), dielectric plasmons (of Nd2O3), highly confined and intense Bloch surface waves (of PCCE platform) aided in realization of dequenched, as well as amplified > 1500-fold enhancements at the photoplasmonic nanocavity interface, presenting new opportunities for multidisciplinary applications.
Safety study of malapposition of the bio-corrodible nitrided iron stent in vivo
Authors: Shi Xiaoli , Wang Jin , Zhang Gui , Zhang Lu , Zhang Wanqian , Cao Ping , Wang Geqi , Zhang Deyuan , Qin Li
Published: August 2021

To evaluate the safety of stent malapposition of corrodible nitride iron stent as biodegradable cardiovascular implants, a total of 108 stents were implanted into the abdominal aortas, iliac arteries, and iliac artery bifurcations of 36 New Zealand white rabbits separately. Each rabbit was implanted with three stents. After a follow-up period of 3 months, no thrombus and embolism were found in local and downstream vessels. And no other adverse events occurred either. Stent strut covered by endothelial layer started to show signs of degradation, while struts exposed to bifurcated blood flow covered by a layer of tissue and no rust particle was found on the surface. Also, there were no traces of thrombosis and traces of excess inflammation. The authors conclude that the risk brought by stent malapposition in less than 9 months is acceptable.
Toward Liberal Immigration Control
Authors: Kalicki Konrad
Published: August 2021

Can contemporary liberal states formulate and pursue a “liberal” immigration control policy? Set against the backdrop of the experience of immigrant-receiving Western liberal democracies, this article examines this question by focusing on Japan. Its main objective is to map the under-studied case of Asia’s most liberal democracy, which is conventionally associated with an “at best illiberal” stance on immigration. I contend, first, that liberal immigration control policy is inevitably defined by approximation, and second, that Japanese policy outputs have become, albeit to varying degrees, more liberal in three fundamental domains of immigration control: the admission policy is increasingly open and unambiguous; the selection policy is gradually being racially decentered; and the removal policy is more attuned to migrants’ rights. However, this case also demonstrates that such an evolution generates inconsistencies across, and tensions within, the different policy domains, which underscores the contemporary liberal state’s general incoherence on immigration affairs.
Lo internacional más allá del “aislamiento social”
Authors: Maldonado Ruiz Jhon Fredy
Published: August 2021

En los últimos meses, hemos vivido grandes transformaciones en nuestra vida personal y social. A causa de un agente virulento, a condición de sus complejidades como organismo vivo, se nos ha restringido en gran medida nuestra libertad de movilizarnos, de ir y venir a voluntad, de abrazar, saludar de mano, de sentir la calidez y cercanía de los otros en la calle. Las normas mínimas de protección nos solicitan un distanciamiento social, categoría que parece un oxímoron: ¿cómo distanciamiento puede ser acompañado de un calificativo como social, si, precisamente, social implica juntura, unión, interrelación, interconexión, estar juntos?
Desarrollo integral como sinónimo de calidad
Authors: Ramos Martín Diana Ximena
Published: August 2021

El Proyecto Educativo Institucional (pei) define la formación integral como “el desarrollo de todas las dimensiones de la vida personal” (USTA, 2004); lo anterior invita a pensar en que necesariamente el campo de trabajo de los programas de acompañamiento debe traspasar los muros de la Universidad y conectarse, sin desconocer su rol como institución educativa, con las dinámicas interaccionales de los estudiantes dentro de sus diferentes espacios de desarrollo y al entender a la familia como la base de todos.
La relación de los jóvenes con los cómics a través del tiempo
Authors: León Garzón Iván René
Published: August 2021

La constante necesidad de explorar nuevos mundos por parte de los jóvenes hace que las manifestaciones narrativas puedan alcanzar la cúspide de su crecimiento. A lo que normalmente se le da el nombre de entretenimiento configura la naturaleza de un motor que activa la evolución sobre los procesos de la sociedad. Esa libertad que otorga el “ocio” es la que permite imaginar un mundo futuro y son los jóvenes los que se alimentan de esta libertad constructora y crean puentes entre la imaginación y la realidad. La forma en que la “entretención en el tiempo libre” ha logrado crear nuevos dispositivos y hacer creer a los jóvenes nos ha proyectado como la sociedad contemporánea en la era digital o de la información en la que estamos ahora.
Profes transformadores en medio de la adversidad
Authors: Cely Atuesta Diana Catherine
Published: August 2021

La crisis sanitaria vivida en el mundo la primera mitad del año ha dejado un sinfín de experiencias, unas fueron gratas otras no tanto, las cuales han develado la recursividad de los seres humanos. La educación, junto a otros contextos, se vio invitada a generar cambios al interior de sus sistemas para continuar con el proceso de enseñanza y aprendizaje. Como lo propone Paulo Freire (2010) “[la educación] es una tarea que requiere, de quien se compromete con ella, un gusto especial por querer bien, no solo a los otros sino al propio proceso que ello implica” (p. 26).
Un camino a la gestión ambiental construido con vigas de literatura y techo de biología
Authors: Merchán Parra Luis Antonio
Published: August 2021

Entrevista realizada a Nadia Verónica Velásquez Vallejo, directora de la Unidad de Gestión Integral de la Calidad Universitaria (ugicu) de la Universidad Santo Tomás (USTA).
La transversalidad de la educación ética en el marco de la Ley 115
Authors: Pérez Vargas John Jairo
Published: August 2021

El tema de la transversalidad es una constante en múltiples planteamientos que se hacen al orden de la educación y aún más cuando se plantea desde la educabilidad de la ética. De cara a ello, el presente escrito busca profundizar en algunos de los planteamientos de la Ley 115 de 1994 en lo que concierne a la transversalidad de la educación ética. Para ello se hace un análisis documental de corte crítico reflexivo desde una perspectiva hermenéutica. Al finalizar se justifica la importancia de la educación de la ética de manera transversal en la escuela, rompiendo con los fraccionamientos que de manera recurrente se suelen presentar. Finalmente, se despliega la importancia de hablar de educación y no de formación o enseñanza en el campo de la ética. En este sentido se plantea la tensión que existe entre el ideal educativo y la realidad que supone la práctica educativa al nivel de la ética.
Genital Culture: Exploring the Cultural Importance of Genital Surgery in the West
Authors: Dodge Alexa
Published: August 2021

In “Feminism Versus Multiculturalism”, Leti Volpp argues that Western conceptions of third-world culture as uniquely oppressive to women work to conceal the ways that Western culture itself also promotes patriarchal and normative practices that can be dangerous and degrading to women. In this paper, I will take up this argument by demonstrating how Western discourse vilifies cultures that engage in female genital mutilation (FGM) without realizing how the Western practices of intersex surgery and cosmetic vaginal surgery are also culturally imbued practices that can be seen as forms of genital mutilation. The assumed importance of genital surgery for intersex infants as well as the rising popularity of cosmetic surgery for women’s genitals exemplify the importance placed on gender distinction though genital appearance in our culture. Genital surgeries such as these are tied to the idealized conception of the gender binary that exists in Western culture. Despite the reality that genitals, especially the vagina, vary widely in appearance (size, shape, colour), the belief that there are norms of genital appearance that need to be adhered to for females and males continues to be propagated within Western culture. Suzanne Kessler’s work on intersex surgeries and Virginia Braun’s work on the growing popularity of cosmetic genital surgeries both illustrate how these norms are acted upon through genital surgery. This paper will perform an in-depth examination of these trends to reveal the similarities between Western genital surgeries and FGM by exposing how Western cultural values also regulate the female body.
Participation in Broadband Society Vols. 1 & 2
Authors: Stillman Larry
Published: August 2021

Participation in Broadband Society  Vols. 1 & 2
Open educational resources or closed learning management systems? –The Challenge of Designing ICT Support for Learning Communities in Higher Education
Authors: Arnold Patricia
Published: August 2021

ICT support for learning communities in higher education has become commonplace over the last decade. Within universities, there are usually various bottom-up initiatives, using different tools and educational designs to support learning and teaching. As this often takes place with little or no strategic approach to sustainability, at a given point universities strive for an “e-learning strategy”: They try to streamline the various initiatives and to endorse a learning management system that works across faculties. But how to design a strategy and sustainable support services that embrace the expectations of all stakeholders? To add complexity to this design process, there is not only a broad selection of learning management systems available for higher education, but also a strong movement pushing for web 2.0 applications and open educational resources instead of closed learning management systems. Thus – often incommensurate - expectations fly high from all sides. This situation forms the backdrop of the investigation at hand: The paper describes and analyses a participatory planning and implementation process of an e-learning strategy and implementation system at a higher education institute. It focuses on expectations that arise and have to be dealt with - both expected and unexpected ones, with a special emphasis on the inherent tension between implementing a closed learning management system and designing for open educational resources. Furthermore, it looks at unanticipated alliances and at unexpected turns in the development process. Results can inform similar design processes that need to resolve the inherent contradictions between open and closed systems as well as top-down and bottom-up approaches to changes of a learning culture.
Effect of hot-pressing process on mechanical properties and color changes of poplar powder compacts
Authors: Long Zhizhong , Zhang Liqiang , Tan Zhili , Wu Qingding , Yan Jin
Published: August 2021

Binderless poplar powder compacts were prepared using the hot-pressing technology. The effect of the forming process on the mechanical properties and surface color of the poplar powder compacts was studied. The effect of forming temperature on mechanical properties and surface color was more noticeable than the forming pressure and the holding time. With the change of the forming process parameters, the static bending strength of the compacts increased first and then decreased. The overall change trend of the surface hardness increased continuously. The overall color difference (ΔE*) of the compacts increased with the change of forming process parameters and the surface color deepened gradually. The results of Fourier transform infrared (FTIR) spectroscopy showed that hemicellulose, cellulose, and lignin in the compacts were greatly affected by the forming process parameters. The degradation of hemicellulose and cellulose produced many colored substances, and the content of lignin increased. These made the surface color of compacts deepen.
Prediction model for the mechanical properties of compacted poplar powder generated via hot-pressing
Authors: Yan Jin , Liu Jianan , Zhang Liqiang , Tan Zhili , Zhang Haoran , Wu Qingding
Published: August 2021

The influence of the process parameters on the mechanical properties of compact wood powder generated via hot-pressing was analyzed through a single-factor experiment. The mechanical properties exhibited a nonlinear trend relative to the process conditions of hot-pressed compact wood powder. The relationship models between the process parameters and the mechanical properties for the compact wood powder were established by applying a multiple regression analysis and neural network methods combined with data from an orthogonal array design. A comparison between experimental and predicted results was made to investigate the accuracy of the established models by applying several data groups among the single-factor experiments. The results showed that the accuracy of the neural network model in terms of predicting the mechanical properties was greater compared with the multiple regression model. This demonstrates that the established neural network model had a better prediction performance, and it can accurately map the relationship between the process conditions and the mechanical properties of the compact wood powder.
Energy saving in papermaking by application of hybrid calcium carbonate
Authors: Lee Min Woo , Jung Sun Young , Seo Yung Bum
Published: August 2021

Hybrid calcium carbonate (HCC) is prepared by pre-flocculating calcium oxide and ground calcium carbonate (GCC) with ionic polymers, and by injecting carbon dioxide to the pre-flocculated flocs until termination of the reaction at neutral pH. When used in papermaking, HCC gave higher bulk, higher stiffness, and higher tensile strength than GCC did. Furthermore, when higher wet pressing pressure was applied to the paper containing HCC, higher solid content was achieved with still better stiffness, smoothness, and tensile strength in comparison with the paper containing GCC. Actually, very high bulk of the HCC containing paper was compromisingly reduced to obtain high solid content by applying higher wet pressing pressure. Higher solid content achieved by combination of HCC technology and higher wet pressing pressure resulted in paper drying energy savings of more than 10%, while a high quality of all the essential printing paper properties was maintained. Drying energy savings may contribute to greenhouse gas (GHG) reduction and lowering of the paper production cost.
Osteosíntesis en una fractura por estrés del pubis. Reporte de un caso y revisión de la bibliografía
Authors: Carabajal Mattar Miguel , Schumacher Francisco
Published: August 2021

La fractura por estrés del pubis es un cuadro poco frecuente, se ha descrito en corredores de larga distancia y reclutas militares. Se han publicado 193 casos que fueron tratados de forma conservadora. El objetivo de este artículo es presentar un caso resuelto de manera alternativa, analizar los casos ya publicados, las enfermedades asociadas, el diagnóstico y el tratamiento. Se presenta el caso de una paciente añosa, deportista, con fractura por estrés del pubis, que no respondió al tratamiento conservador y fue tratada con cirugía. La paciente evolucionó favorablemente, retornó a sus actividades y el dolor desapareció. La indicación del tratamiento no solo debe limitarse al grado de inestabilidad de la fractura, sino que también se debe considerar el contexto médico y social del enfermo.
Influencia de la fusión espinal en la orientación del implante acetabular
Authors: López Pablo Daniel , Orosco Falcone Luis David Enrique , Iglesias Santiago Luis , Pioli Ignacio José , Gómez José Miguel , Allende Bartolomé Luis
Published: August 2021

Introducción: Las enfermedades degenerativas de la cadera y la columna vertebral son causas comunes de discapacidad y dolor y los síntomas suelen superponerse. Cuando algún parámetro se altera, otro debe modificarse para evitar el choque femoroacetabular y una posible luxación. Se piensa que la fijación lumbar afectaría la adaptación de la unidad espino-pélvica en las diferentes posturas. El objetivo de este estudio fue analizar el comportamiento espino-pélvico en pacientes con artroplastia total de cadera y artrodesis lumbar.

Materiales y Métodos: Se realizó un estudio no aleatorizado, retrospectivo, de casos y controles en pacientes con artroplastia total de cadera evaluados con radiografía lumbopélvica de frente y de perfil en posición erecta y en sedestación, divididos en dos grupos: con artrodesis lumbar o sin ella. Se midieron parámetros espino-pélvicos y femoroacetabulares.

Resultados: La muestra tenía 50 pacientes: 25 en cada grupo. Quince tenían artroplastia total de cadera bilateral y el nivel de fijación lumbar más frecuente era L5-S1. No hubo diferencia estadísticamente significativa en la edad y el sexo entre ambos grupos. Los pacientes con artrodesis lumbar necesitaron más flexión de cadera para sentarse, sin un aumento significativo asociado en la tasa de luxación.

Conclusiones: La composición ideal de los componentes aún es difícil de alcanzar. La reconsideración de las “zonas seguras” de los componentes ha comenzado a alejarse de los valores del plano coronal de Lewinnek. Se ha propuesto un nuevo enfoque en las zonas seguras del plano sagital más apropiadas y precisas en pacientes seleccionados con enfermedad espino-pélvica grave.
Comportamiento de los tallos no cementados recubiertos con hidroxiapatita colocados con alineación coronal inadecuada en la artroplastia primaria de cadera. Resultados del seguimiento a largo plazo
Authors: Simesen de Bielke Harold , Pérez Alamino Leonel , Garabano Germán , Pesciallo César Ángel , Del Sel Hernán , Lopreite Fernando Adrián
Published: August 2021

Introducción: La mala alineación de los tallos femorales no cementados sigue siendo un tema controvertido. Algunos autores han comunicado una inadecuada osteointegración y hundimiento en los tallos en varo y otros no encontraron dichos efectos adversos, pese a la incorrecta alineación. Los objetivos de este estudio fueron determinar la prevalencia de tallos no cementados con cobertura total de hidroxiapatita en deseje coronal y mostrar los resultados clínico-radiográficos a largo plazo. Materiales y Métodos: Estudio retrospectivo entre 2006 y 2009. Se analizaron 220 reemplazos totales de cadera primarios con tallos no cementados con cobertura completa de hidroxiapatita. La alineación coronal fue analizada con radiografías anteroposteriores de ambas caderas en 10° de rotación interna. Se registraron datos, como osteointegración, hundimiento, osteólisis femoral proximal e hipertrofia cortical. Para el análisis clínico se utilizó el Harris Hip Score. El análisis de supervivencia contempló la necesidad de revisión por cualquier causa. Resultados: La prevalencia de tallos en deseje fue del 32,3%, con mayoría de implantes en varo (73,3%). El Harris Hip Score tuvo un incremento estadísticamente significativo (41,05 ± 6,5 vs. 90,05 ± 2,5; p <0,01). El 73,1% de los tallos desarrollaron una fijación ósea estable. Se observó osteólisis femoral proximal en el 3% de los casos. Hubo un 3% de fracturas periprotésicas femorales. La supervivencia de la prótesis fue del 100% a los 10.9 años. Conclusión: Los tallos no cementados con cobertura total de hidroxiapatita toleran adecuadamente la alineación coronal en varo/valgo a largo plazo.
Realidad actual. Lo que podemos aprovechar
Authors: Lopreite Fernando Adrián
Published: August 2021

Presidente de ACARO
Hospital Británico de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
Dupilumab for STAT3-Hyper-IgE Syndrome With Refractory Intestinal Complication
Authors: Lu Chun-Wei , Lee Wen-I , Chung Wen-Hung
Published: August 2021

STAT3 hyper–immunoglobulin E syndrome (STAT3-HIES) is a rare primary immunodeficiency syndrome characterized by elevated serum immunoglobulin E levels, eczema, recurrent skin and respiratory tract infections, and several gastrointestinal (GI) problems. GI manifestations, such as gastroesophageal reflux disease, dysphagia, abdominal pain, gut dysmotility, bowel perforation, eosinophilic esophagitis, and diarrhea, have been reported in 60% of patients. Until now, there was no efficient treatment that could effectively manage all aspects of the syndrome. In this report, we present the case of a 21-year-old man who suffered from undetectable pathogenic refractory diarrhea that persisted >21 days despite aggressive antibiotic and steroid treatment since he was 2 years old. STAT3 Int10(−2)A > G splicing mutation-caused STAT3-HIES was diagnosed by next-generation sequencing. The patient had suffered recurrent intestinal and colon perforations since he was 10 years old. He had received multiple surgeries and continuous systemic intravenous immunoglobulin therapy to manage his GI symptoms. However, refractory diarrhea occurring >5 to 6 times per day with severe eczematous dermatitis and frequent abscess formation remained threats to his life. Dupilumab 300 mg every 3 weeks was prescribed to control his skin problems, but the patient’s diarrhea also completely subsided. As such, it appears that dupilumab may not only effectively treat the skin inflammation but also the GI manifestation-related inflammation of STAT3-HIES refractory to traditional immunomodulators.
De las dos estéticas kantianas a la lógica de la sensación deleuziana
Authors: Pachilla Pablo Nicolás
Published: August 2021

Este artículo analiza la crítica de Gilles Deleuze a la dualidad kantiana de la estética. El autor atribuye la no-coincidencia entre la estética trascendental como teoría de la sensibilidad y la estética como teoría del gusto a una doble presuposición que se debe abandonar, esta es, relegar la síntesis a la actividad, y la noción de condiciones de la experiencia posible en lugar de condiciones de la experiencia real. El intento deleuziano por superar la dualidad corre el riesgo de recaer en dos estéticas, y se sugiere una manera diferente de realizar dicho proyecto por medio del concepto de sensación.
O sonho da cidade
Authors: Vieira Marcos Fábio Medeiros , Siqueira Denise da Costa Oliveira
Published: August 2021

As metrópoles contemporâneas, onde efemeridade e velocidade assumem papéis econômicos fundamentais, propiciam o surgimento de ambiances e imaginários sobre cidades ideais ou de sonho. Neste artigo, temos como objetivo estudar, a partir de uma leitura da antropologia das emoções e de estudos urbanos, uma situação de évasion: o conto fantástico “Uma história de duas cidades”, dos quadrinhos de Sandman, de Neil Gaiman. No conto, a cidade de sonho torna-se labirinto de significações do qual os indivíduos buscam uma fuga. Metodologicamente, a partir de uma perspectiva qualitativa, hermenêutico-interpretativa, lemos texto e imagens da HQ, observando a cidade imaginada como tentativa de évasion movidos pela questão sobre em que medida medo e interação midiatizada produzem sentidos sobre a cidade contemporânea. Como resultado preliminar, observamos que na HQ o indivíduo se divide entre a segurança do espaço privado e o desejo de lançar-se ao espaço desconhecido, aos encontros e à morte.
Jogos de linguagem nas telas de Jorge Furtado
Authors: Barbosa Afonso , Mousinho Luiz Antonio
Published: August 2021

O objetivo deste trabalho é mapear ocorrências dialógicas em algumas das obras dirigidas e/ou roteirizadas por Jorge Furtado, observando como a construção do elemento lúdico se dá intertextualmente pelo imbricamento de uma variedade de plataformas discursivas, sobretudo a partir dos jogos, eletrônicos e metafóricos, presentes em longas-metragens de Furtado e em outros projetos audiovisuais corroteirizados por ele, especialmente Houve uma vez dois verões (2002), O homem que copiava (2003), Meu tio matou um cara (2004) e Saneamento básico, o filme (2007). Com isso, pretende-se examinar nos textos selecionados categorias narratológicas, como enredo e personagem, enquanto unidades propulsoras, especialmente, da linguagem dos videogames, que adquire entrâncias cada vez mais relevantes nos estudos acadêmicos e que, para estabelecer uma gramática específica, desdobrou-se, assim como o próprio cinema, em muitos momentos, pelas relações estabelecidas com outras práticas artísticas. O artigo viabiliza, desse modo, uma leitura das aproximações fílmicas e audiovisuais em interface com a ludicidade alcançada pelos jogos, estética e tematicamente evocados, o que acaba gerando uma reelaboração no trato da mensagem e formas outras de ressignificar o laço narrativo com a recepção.
Representatividade feminina e relações de gênero em um livro de inglês aprovado pelo PNLD
Authors: Conegatti Daniela
Published: August 2021

A presente pesquisa apresenta os dados da análise de um livro didático aprovado pelo PNLD de 2018, para o ensino de língua inglesa, no que diz respeito a questões de gênero e sexualidade. O referencial teórico compreendeu os estudos de gênero e sexualidade, com base em Louro (2000; 2004; 1997), Weeks (2000) e Butler (2004), e a metodologia a análise de discurso com base em Foucault (1989; 2005) e a desconstrução por meio da perspectiva Queer. O trabalho analítico concebeu como o livro recorreu a lugares normativos de gênero e sexualidade para produzir conhecimento em língua inglesa.
APPLICATION OF SYSTEM APPROACH IN METHODOLOGY OF SOLVING ENGINEERING PROBLEMS
Authors: PASICHNYK A. , PASICHNYK V. , KUSHCHENKO Y.
Published: August 2021

The purpose of this article is to develop and improve systemic methods for constructing solutions to engineering problems. The article provides a methodological approach to solving complex engineering problems based on the application of the system analysis method. The need for a preliminary assessment of the completeness of the initial data for the construction of a mathematical model of the problem is shown.

At the stage of the problem statement, the problem statement is concretized in order to establish the research goal. As a result of a systematic analysis of the functional characteristics of the object under study, the main parameters and their relationship are determined, and the values of these parameters characterizing the initial state of the object under study are established. It is necessary to clarify the essence of the problem and formulate it so that the solution found is effective and can be obtained using existing means and in real terms. Based on the data of the analysis, the goal of solving the engineering problem is determined and the corresponding formulation is formulated in the following form: initial data; parameters; quantities to be determined.

The functional connections between the main parameters of the object and the factors acting on it are established, they are described by mathematical relations and equations included in the mathematical model, taking into account the determining influence of the parameters of the problem on the state of the object. Thus, we obtain a mathematical formulation of the problem, the construction of the solution of which allows us to establish the parametric dependence of the state of the object for various values of the parameters. The reliability of the results obtained and the suitability of the chosen method, the decision should be confirmed by their testing and careful analysis.

On the basis of the formulated approach, assessments have been carried out and the corresponding technological operations have been proposed for solving the engineering problem of removing the tanker «Delfi» from the aground in the water area of the Odessa coast of the Black Sea. The expediency of further improvement of the technology of application of the proposed approach for design tasks and industrial development of software and hardware complexes has been determined.
ANALYSIS OF MODERN PROBLEMS OF EFFECTIVE INTERACTION BETWEEN UKRAINIAN RAILWAYS AND SEA PORTS
Authors: VERNYHORA R. , ZOLOTAREVSKA О.
Published: August 2021

Purpose. The aim of the work is a comprehensive analysis of the current state of affairs and the main problems in the interaction between railways and seaports in the organization of freight traffic, as well as possible ways of solving these problems. Methodology. In the process of research, the methods of analysis and synthesis were used to study the content and the main provisions of scientific publications on the issues of establishing effective interaction between rail and sea transport, in particular, when organizing export traffic, with their subsequent comparison and generalization; methods of statistical analysis and forecasting to determine the existing and future traffic volumes in the rail-water communication, taking into account the unevenness. Results. Export is one of the main sources of filling the state budget of Ukraine, accounting for a third of its GDP. More than 60% of export cargoes go through Ukrainian ports; while 75% of export volumes are delivered to ports by rail. In recent years, the existing system of interaction between railways and seaports is increasingly showing its ineffectiveness, which results in an increase in the delivery time of goods, a deterioration in the operation of rolling stock, and an increase in the cost of transportation. One of the reasons for this situation is the inconsistency of the existing capacity of the port railway infrastructure with modern operating conditions, which are characterized by a change in the economic model, a change in the directions and structure of cargo flows, and the active development of port terminals. An effective way to solve the problem of reducing the imbalance in the processing capacity of ports and the pre-port railway infrastructure is public-private partnership in the implementation of appropriate investment projects, the assessment of which should be carried out using modern scientific approaches. Scientific novelty. The results obtained as a result of the study make it possible to provide a scientific basis for the further development of public-private partnerships for the development of railway pre-port infrastructure. Practical significance. The development of the infrastructure of pre-port railway stations and sections at the expense of public-private investments will increase the efficiency of logistics of freight transportation in rail-water communication, reduce their cost and, accordingly, increase the competitiveness of Ukrainian goods in foreign markets.
STATEMENT OF THE PROBLEM FOR TECHNICAL DIAGNOSTIC TANK CARS
Authors: VOROPAI V.
Published: August 2021

The purpose of the work is to formulate the problem of technical diagnostics of tank cars. Research methods. Methods of formal logic were used methods of the theory of reliability and probability were used to describe the stages of solving the problem. Results. A study of a large array of data on the performance indicators of tank cars for the transportation of liquefied gases of the fleet of a chemical industry enterprise in Ukraine was carried out. The results of technical inspection of tank cars were obtained. A hypothesis has been formed about the possibility of increasing the resource of tank cars of an industrial park for their further operation. A proposal was put forward to consider the last stage of the life cycle as the stage "Life cycle renewal and recycling", which is not defined in Statement Standart. It should in an alternative form represent the stages of "utilization", "modernization", "modification" and "recycling", this will correspond to modern technologies on the scale of the global management of any resources. The research task was formulated, which determines the main task - the possibility of increasing the resource of tank cars of the operating fleet of an industrial enterprise using the methods of technical diagnostics. Practical significance. The solution to the task of determining the technical condition of tank cars will allow an industrial enterprise to reasonably operate the rolling stock during the forecast period.
Research University: Principles, Environment, Innovations, Traditions. Historical Aspect
Authors: Mayer G. V.
Published: August 2021

This paper studies the basic principles of the Russian research university, its scientific, educational, social and cultural environment with the aim to study the transformation of the classical Humboldt’s model of university. The author emphasizes the role of the university environment as a key factor of shaping the personality of a research university graduate. There is discussed the importance of scientific and pedagogical schools and their leaders in the university’s development and functioning. The innovation activity is defined, and it is proposed to consider the innovative university system as a new essence of its structure. The turn of the XX century is characterized by the significant role of university traditions and of the Ministers of Education and Science in keeping and developing Russian higher education. The article is addressed to the heads of higher education institutions, to the experts in the sphere of university management, as well as to the researchers in the sphere of education and science.