bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultrahigh-channel-count OAM mode conversion utilizing a hybrid few-mode fiber configuration
Authors: Zhu Chengliang , Meng Xinyue , Qu Zengxin , Zhang Huan , Cheng Tonglei , Zhao Yong
Published: July 2024

We propose and demonstrate a hybrid few-mode fiber configuration (HFMFC) that enables ultrahigh-channel-count orbital angular momentum (OAM) mode conversion. The HFMFC consists of periodically twisted graded-index few-mode fiber segments and a step-index few-mode fiber segment. Our proposed HFMFC-based multichannel OAM mode converter (OAM-MC) offers an exceptionally high channel count in a wide bandwidth, with customizable channel spacing down to 50 GHz (∼0.4 nm), achieved through optimization of the structural parameters of the HFMFC. By employing this methodology, we have successfully demonstrated 10, 32, 117, and 233 channel OAM mode conversions covering the entire C + L band, representing the highest performance among all reported fiber-based multichannel OAM-MCs to date, for the first time to the best of our knowledge. The suggested ultrahigh-channel-count OAM-MC exhibits promising potential for applications in various fields such as OAM fiber communication, OAM holography, OAM information processing, and OAM metrology.
Electro-optical effect of unpolarized light modulation in homeoplanar structures of ferroelectric and ferrielectric liquid crystals
Authors: Pozhidaev E. P. , Zhukovich-Gordeeva A. A. , Kuznetsov A. V. , Tkachenko T. P.
Published: July 2024

A clearly expressed effect of unpolarized light electro-optical modulation by homeoplanar structures of a smectic C* ferroelectric liquid crystal (FLC) and a ferrielectric liquid crystal (FerriLC) was discovered and investigated for the first time to our knowledge. This effect of electrically controlled light scattering is insensitive to the applied voltage sign, as for polymer-dispersed nematic liquid crystals (PDLCs), but the electro-optical modulation frequency reaches the kilohertz range. Occurrence conditions and essential features of the effect, as well as its physical origin, are discussed.
Al/Zr-based multilayer mirrors with record-breaking reflectivity
Authors: Polkovnikov V. N. , Chkhalo N. I. , Garakhin S. A. , Salashchenko N. N. , Zuev S. Yu.
Published: July 2024

The paper reports on a new Zr/Be/Si/Al multilayer structure that provides record reflectances of up to 67% and a spectral resolution of Δλ = 0.63 nm (λ / Δλ ≈ 27) in the spectral range of 17–20 nm. It is shown that the structure has a high temporal stability of extreme ultraviolet (EUV) optical characteristics. This fact makes the structure promising for future missions to study the solar corona.
A cytidine deaminase regulates axon regeneration by modulating the functions of the Caenorhabditis elegans HGF/plasminogen family protein SVH-1
Authors: Shimizu Tatsuhiro , Nomachi Takafumi , Matsumoto Kunihiro , Hisamoto Naoki
Published: July 2024

The pathway for axon regeneration in Caenorhabditis elegans is activated by SVH-1, a growth factor belonging to the HGF/plasminogen family. SVH-1 is a dual-function factor that acts as an HGF-like growth factor to promote axon regeneration and as a protease to regulate early development. It is important to understand how SVH-1 is converted from a protease to a growth factor for axon regeneration. In this study, we demonstrate that cytidine deaminase (CDD) SVH-17/CDD-2 plays a role in the functional conversion of SVH-1. We find that the codon exchange of His-755 to Tyr in the Asp–His–Ser catalytic triad of SVH-1 can suppress the cdd-2 defect in axon regeneration. Furthermore, the stem hairpin structure around the His-755 site in svh-1 mRNA is required for the activation of axon regeneration by SVH-1. These results suggest that CDD-2 promotes axon regeneration by transforming the function of SVH-1 from a protease to a growth factor through modification of svh-1 mRNA.
Variant calling and genotyping accuracy of ddRAD-seq: Comparison with 20X WGS in layers
Authors: Doublet Mathilde , Degalez Fabien , Lagarrigue Sandrine , Lagoutte Laetitia , Gueret Elise , Allais Sophie , Lecerf Frédéric
Published: July 2024

Whole Genome Sequencing (WGS) remains a costly or unsuitable method for routine genotyping of laying hens. Until now, breeding companies have been using or developing SNP chips. Nevertheless, alternatives methods based on sequencing have been developed. Among these, reduced representation sequencing approaches can offer sequencing quality and cost-effectiveness by reducing the genomic regions covered by sequencing. The aim of this study was to evaluate the ability of double digested Restriction site Associated DNA sequencing (ddRAD-seq) to identify and genotype SNPs in laying hens, by comparison with a presumed reliable WGS approach. Firstly, the sensitivity and precision of variant calling and the genotyping reliability of ddRADseq were determined. Next, the SNP Call Rate (CRSNP) and mean depth of sequencing per SNP (DPSNP) were compared between both methods. Finally, the effect of multiple combinations of thresholds for these parameters on genotyping reliability and amount of remaining SNPs in ddRAD-seq was studied. In raw form, the ddRAD-seq identified 349,497 SNPs evenly distributed on the genome with a CRSNP of 0.55, a DPSNP of 11X and a mean genotyping reliability rate per SNP of 80%. Considering genomic regions covered by expected enzymatic fragments (EFs), the sensitivity of the ddRAD-seq was estimated at 32.4% and its precision at 96.4%. The low CRSNP and DPSNP values were explained by the detection of SNPs outside the EFs theoretically generated by the ddRAD-seq protocol. Indeed, SNPs outside the EFs had significantly lower CRSNP (0.25) and DPSNP (1X) values than SNPs within the EFs (0.7 and 17X, resp.). The study demonstrated the relationship between CRSNP, DPSNP, genotyping reliability and the number of SNPs retained, to provide a decision-support tool for defining filtration thresholds. Severe quality control over ddRAD-seq data allowed to retain a minimum of 40% of the SNPs with a CcR of 98%. Then, ddRAD-seq was defined as a suitable method for variant calling and genotyping in layers.
Evaluation of dynamic cerebrovascular autoregulation during liver transplantation
Authors: Wolpert Bente Marei , Rothgerber David Jonas , Rosner Ann Kristin , Brunier Malte , Kuchen Robert , Schramm Patrick , Griemert Eva-Verena
Published: July 2024

Background

Cerebrovascular autoregulation in patients with acute and chronic liver failure is often impaired, yet an intact autoregulation is essential for the demand-driven supply of oxygenated blood to the brain. It is unclear, whether there is a connection between cerebrovascular autoregulation during liver transplantation (LTX) and the underlying disease, and if perioperative anesthesiologic consequences can result from this.

Methods

In this prospective observational pilot study, data of twenty patients (35% female) undergoing LTX were analyzed. Cerebral blood velocity was measured using transcranial doppler sonography and was correlated with arterial blood pressure. The integrity of dynamic cerebrovascular autoregulation (dCA) was evaluated in the frequency domain through transfer function analysis (TFA). Standard clinical parameters were recorded. Mixed one-way ANOVA and generalized estimating equations were fitted to data involving repeated measurements on the same patient. For all other correlation analyses, Spearman’s rank correlation coefficient (Spearman’s-Rho) was used.

Results

Indications of impaired dCA are seen in frequency domain during different phases of LTX. No correlation was found between various parameter of dCA and primary disease, delirium, laboratory values, length of ICU or hospital stay, mortality or surgical technique.

Conclusions

Although in most cases the dCA has been impaired during LTX, the heterogeneity of the underlying diseases seems to be too diverse to draw valid conclusions from this observational pilot study.
Effect of photobiomodulation on lower urinary tract dysfunction in rat cystitis model
Authors: Ishibashi Naoya , Uchiyama Tomoyuki , Tao Shinichi
Published: July 2024

Objective

Photobiomodulation selectively controls the activity of the sensory nervous system associated with A-delta and C fibers. Hypersensitivity involving the afferent A-delta and C fibers occurs in cystitis and decreases urinary function. This study aimed to investigate the effect of photobiomodulation on urinary storage dysfunction and voiding functions in cystitis model rats.

Methods

We prepared the rat cystitis model. Under anesthesia, a cannula was connected to the bladder via a ventral incision. 0.3% acetic acid or saline was injected into the bladder. Continuous cystometry was performed, measuring bladder pressure and voiding urine volume with rats freely mobile. Laser irradiation was applied to the L6 lumbosacral intervertebral foramen using an 830 nm laser. Residual urine was extracted post-cystometry.

Results

In the rat cystitis model groups, there was a significant decrease in the voiding interval and volume compared to the group receiving normal saline infusion. After sham or laser irradiation, only the group with laser irradiation showed a significant increase in voiding interval (217%, p = 0.0002) and voiding volume (192%, p = 0.0012) in the parameters of storage dysfunction. The basal pressure, intravesical pressure, and residual urine volume remained unchanged in all groups before and after irradiation.

Conclusions

This study indicates that photobiomodulation may improve urine storage dysfunction without exacerbating voiding function in a rat model of cystitis. Thus, photobiomodulation may be a new treatment option for the hypersensitivity and detrusor overactivity caused by cystitis.
Early detection of human impacts using acoustic monitoring: An example with forest elephants
Authors: Wrege Peter H. , Bambi Frelcia Bien-Dorvillon , Malonga Phael Jackel Ferdy , Samba Onesi Jared , Brncic Terry
Published: July 2024

The impacts of human activities and climate change on animal populations often take considerable time before they are reflected in typical measures of population health such as population size, demography, and landscape use. Earlier detection of such impacts could enhance the effectiveness of conservation strategies, particularly for species with slow population growth. Passive acoustic monitoring is increasingly used to estimate occupancy and population size, but this tool can also monitor subtle shifts in behavior that might be early indicators of changing impacts. Here we use data from an acoustic grid, monitoring 1250 km2of forest in northern Republic of Congo, to study how forest elephants (Loxodonta cyclotis) assess risk associated with human impacts across a landscape that includes a national park as well as active and inactive logging concessions. By quantifying emerging patterns of behavior at the population level, arising from individual-based decisions, we gain an understanding of how elephants perceive their landscape along an axis of human disturbance. Forest elephants in relatively undisturbed forests are active nearly equally day and night. However, they become more nocturnal when exposed to a perceived risk such as poaching. We assessed elephant perception of risk by monitoring changes in the likelihood of nocturnal vocal activity relative to differing levels of human activity. We show that logging is perceived to be a risk on moderate time and small spatial scales, but with little effect on elephant density. However, risk avoidance persisted in areas with relatively easy access to poachers and in more open habitats where poaching has historically been concentrated. Increased nocturnal activity is a common response in many animals to human intrusion on the landscape. Provided a species is acoustically active, passive acoustic monitoring can measure changes in human impact at early stages of such change, informing management priorities.
Direct and indirect costs of idiopathic inflammatory myopathies in adults: A systematic review
Authors: Daniel Eden , Smith Ian C. , Ly Valentina , Bourque Pierre R. , Breiner Ari , Lochmuller Hanns , Maltez Nancy , Thavorn Kednapa , Warman-Chardon Jodi
Published: July 2024

Idiopathic inflammatory myopathies (IIMs) are rare disorders characterized by inflammation of skeletal muscle, which can result in fatty replacement of muscle, muscle atrophy, and subsequent weakness. Therapeutic advancements have improved clinical outcomes but impose an economic impact on healthcare systems. We aimed to summarize the direct and indirect costs associated with IIMs in a systematic review (PROSPERO Registration #CRD42023443143). Electronic databases (MEDLINE, Embase, CINAHL, and Scopus) were systematically searched for full-length articles (excluding case reports) reporting costs specific to patients diagnosed with an IIM, published between database inception and April 19, 2023. Direct cost categories included inpatient, outpatient, medication, home/long-term care, and durable medical equipment such as mobility and respiratory aids. Indirect costs included lost productivity. Eligibility criteria were met by 21 of the 3,193 unique titles identified. Costs are expressed in 2023 United States of America dollars, with adjustments for differences in purchasing power applied to currency conversions. As no study reported on all cost categories, annualized cost of IIM per patient was estimated by calculating the mean cost per category, and then adding the means of the different cost categories. By this method, IIM was estimated to cost $52,210 per patient per year. Proportional contributions by category were lost productivity (0.278), outpatient care (0.214), medications (0.171), inpatient care (0.161), home/long-term care (0.122), and durable medical equipment (0.053). Newer findings with intravenous immunoglobulin considered first line therapy for IIM demonstrated markedly higher annual medication costs per patient, upwards of $33,900 compared to an average of $3,908 ± $1,042 in older studies. Future cost-effectiveness studies require updated cost-of-illness studies reflecting the evolving sub-classification and treatment options for IIM, and should consider the impact of IIM on patients and their families.
Association of adverse cardiovascular events with gabapentin and pregabalin among patients with fibromyalgia
Authors: Pan Yiheng , Blankfield Robert P. , Kaelber David C. , Xu Rong
Published: July 2024

Objective

Fibromyalgia, a chronic pain disorder, impacts approximately 2% of adults in the US. Gabapentin and pregabalin are common treatments to manage fibromyalgia-related pain. Our recent study showed the risk of adverse cardiovascular events increased in diabetic neuropathy patients who were prescribed gabapentin or pregabalin. Here, we investigated whether the prescription of gabapentin or pregabalin has similar cardiovascular risk in patients with fibromyalgia.

Methods

This retrospective cohort study leveraged electronic health records from 64 US healthcare organizations with 112 million patients. The study population included 105,602 patients first diagnosed with fibromyalgia and followed by a prescription of gabapentin, pregabalin, or other FDA-approved drugs for treating fibromyalgia from 2010 to 2019. Outcomes were deep venous thrombosis (DVT), myocardial infarcts (MI), peripheral vascular disease (PVD), strokes, heart failure, and pulmonary embolism (PE). In propensity-score-matched cohorts, 1-year and 5-year hazard ratios (HRs) were computed with their respective 95% confidence intervals (CIs). Additionally, we conducted sensitivity analyses on the subpopulations without other possible indications.

Results

For 5-year follow-up, gabapentin increased the risk of PVD (HR = 1.46, 95% CI = 1.17–1.80), MI (HR = 1.31, 95% CI = 1.03–1.66), heart failure (HR = 1.27, 95% CI = 1.10–1.48), DVT (HR = 1.80, 95% CI = 1.33–2.44), and PE (HR = 2.23, 95% CI = 1.62–3.07). Pregabalin increased the risk of DVT (HR = 1.49, 95% CI = 1.01–2.20), and PE (HR = 2.24, 95% CI = 1.43–3.50). For 1-year follow-up, gabapentin increased the risk of PVD (HR = 1.32, 95% CI = 1.11–1.57), DVT (HR = 1.35, 95% CI = 1.09–1.68), and PE (HR = 1.36, 95% CI = 1.17–1.57). Pregabalin increased the risk of PVD (HR = 1.32, 95% CI = 1.06–1.63) and PE (HR = 1.25, 95% CI = 1.03–1.52). Sensitivity analyses showed similar trends.

Conclusion

In fibromyalgia patients, the prescription of gabapentin and pregabalin moderately increased the risk of several adverse cardiovascular events. This risk, together with benefits and other adverse reactions, should be considered when prescribing these medications for fibromyalgia patients.
A convenient five-segment cassette procedure for DNA insertions coding for novel peptides
Authors: Filley Jonathan
Published: July 2024

A DNA cassette assembly method is described which utilizes inexpensive oligomers no longer than 40 nt in length. The five-segment cassettes have 20 nt overlaps which give an effective length of 80 nt, making it possible to code for peptides up to 20 amino acids long. The cassettes have three phosphate free nicks, which can be successfully inserted into plasmid DNA and used to transform E. coli. The nicks are repaired in vivo by an unknown mechanism. Insertions are not successful for cassettes with greater than three nicks. A procedure is provided for rapid turnaround from DNA design to peptides, which are easily isolated as C-terminal fusions with GFP. The technique generally gives the expected sequence, with errors which occur about 1% of the time. Several representative DNA inserts are described which illustrate the method, as well as chemical details on the new peptides coded for. The peptides can be readily mutated to make it possible to understand how polar and aromatic residues affect GFP-fusion solubility, and how histidine residues can be strategically placed in a peptide for good IMAC retention. The method can be used to explore a large number of new designed peptides as fusion products quickly and economically.
Estimation of pulmonary vascular resistance for Glenn physiology
Authors: Laudenschlager Sebastian , Schofield Samuel , Drysdale Nicolas , Stone Matthew , Romanowicz Jennifer , Frank Benjamin , DiMaria Michael , Kheyfets Vitaly O. , Hedjazi-Moghari Mehdi
Published: July 2024

Children with single ventricle heart disease typically require a series of three operations, (1) Norwood, (2) Glenn, and (3) Fontan, which ultimately results in complete separation of the pulmonary and systemic circuits to improve pulmonary/systemic circulation. In the last stage, the Fontan operation, the inferior vena cava (IVC) is connected to the pulmonary arteries (PAs), allowing the remainder of deoxygenated blood to passively flow to the pulmonary circuit. It is hypothesized that optimizing the Fontan anatomy would lead to decreased power loss and more balanced hepatic flow distribution. One approach to optimizing the geometry is to create a patient-specific digital twin to simulate various configurations of the Fontan conduit, which requires a computational model of the proximal PA anatomy and resistance, as well as the distal Pulmonary Vascular Resistance (PVR), at the Glenn stage. To that end, an optimization pipeline was developed using 3D computational fluid dynamics (CFD) and 0D lumped parameter (LP) simulations to iteratively refine the PVR of each lung by minimizing the simulated flow and pressure error relative to patients’ cardiac magnetic resonance (CMR) and catheterization (CATH) data. While the PVR can also be estimated directly by computing the ratio of pressure gradients and flow from CATH and CMR data, the computational approach can separately identify the different components of PVR along the Glenn pathway, allowing for a more detailed depiction of the Glenn vasculature. Results indicate good correlation between the optimized PVR of the CFD and LP models (n = 16), with an intraclass correlation coefficient (ICC) of 0.998 (p = 0.976) and 0.991 (p = 0.943) for the left and right lung, respectively. Furthermore, compared to CMR flow and CATH pressure data, the optimized PVR estimates result in mean outlet flow and pressure errors of less than 5%. The optimized PVR estimates also agree well with the computed PVR estimates from CATH pressure and CMR flow for both lungs, yielding a mean difference of less than 4%.
Presence of Triatoma breyeri (Reduviidae, Triatominae) in Bolivia
Authors: Lardeux Frédéric , Llanos Alberto , Rodriguez Roberto , Abate Luc , Boussès Philippe , Lardeux Rosenka Tejerina , Barnabé Christian , Garcia Lineth
Published: July 2024

The study focuses on identifying and understanding the ecological dynamics of Triatoma breyeri in Bolivia. Morphological identification and molecular analysis using gene fragments (COI, CytB and 16S) confirms T. breyeri’s presence and its relation to other species. The species has been consistently found in the Estancia-Mataral–La Palma region since 2010 but has not spread to other regions in Bolivia. The region of occurrence is a small characteristic dry inter-Andean valley. A MaxEnt model suggests part of the Bolivian Montane Dry Forest ecoregion serves as a unique habitat within its range. The infrequent presence in Bolivia and the distance from its main range in Argentina suggest recent accidental introduction, possibly through human transport. Further research is needed to comprehend its persistence in this small area of Bolivia.
¿Dónde están las heridas? Impactos de las agresiones sexuales en la vida de las víctimas: valoraciones y desatenciones
Authors: Ballesteros Doncel Esmeralda , Blanco Moreno Francisca , Rubio Martín María José
Published: July 2024

En este artículo se examina, mediante un estudio de caso basado en el Análisis de Contenido de sentencias emitidas por la Audiencia Provincial de Madrid entre los años 2016 a 2018, la valoración pericial de los daños físicos y psíquicos de víctimas de agresión sexual. Nuestra pregunta de investigación ¿dónde están las heridas? opera como una declaración epistemológica para problematizar sobre los daños evaluados en los casos enjuiciados penalmente: ¿qué se busca? ¿qué se valora? ¿qué se ignora? y ¿qué se desatiende? Los hallazgos alcanzados tras el procesamiento de los datos mediante diversas técnicas de análisis tanto cualitativas como cuantitativas constatan que, la gran mayoría de las víctimas de agresión sexual no presentan lesiones corporales graves (80%); en cambio, los impactos psicológicos, cuando constan en el fallo, se revelan como graves y persistentes en el tiempo. Los resultados también advierten que, la frecuencia de evaluación forense de los daños sigue un modelo inverso a esta fenomenología. La valoración de lesiones físicas figura en un 73% de las sentencias estudiadas y aumenta al 98% si se interpuso la denuncia en las 48 horas siguientes a la agresión. En cambio, los daños psicológicos se evaluaron en menos de la mitad de los procesos (48%). Teniendo en cuenta que en los fallos condenatorios, el reconocimiento del daño causado por el delito está asociado al reconocimiento de indemnizaciones económicas, las consecuencias de subestimar la importancia del daño psicológico niega a las víctimas un pleno acceso a la justicia, pues los procesos de reparación por los perjuicios soportados no son reconocidos adecuadamente. Si bien los resultados de este estudio de caso son todavía exploratorios, sí inducen a tomar conciencia de la importancia de valorar correctamente los daños y afectaciones que causan las violencias sexuales y deberían impulsar la solicitud de evaluación de impacto psicológico en todos los procesos de instrucción de denunciantes de agresión sexual.
Produção associada de amilases e celulases através de fermentação submersa
Authors: Lopes Samuel Teixeira , Bender Leticia Eduarda , Berwian Gabrielle Fusiger , Colla Luciane Maria
Published: July 2024

O estudo objetiva estudar a otimização da produção homemade associada de enzimas amilolíticas e celulolíticas por fermentação submersa. A produção de enzimas foi realizada utilizando bagaço de cana-de-açúcar e farinha de triticale como substratos do meio fermentativo, utilizando bactérias isoladas de resíduos agroindustriais. Os extratos enzimáticos foram avaliados quanto à atividade amilolítica e celulolítica. As variáveis significativas (p<0,05) sobre a produção amilolítica foram a bactéria e a fonte de nitrogênio, para produção celulolítica foram a bactéria, concentração e fonte de nitrogênio. Ademais, as atividades enzimáticas máximas foram obtidas no tempo de 120 h para ambas as enzimas estudadas. Neste sentido, a fermentação poderia ser encerrada em 120 h devido a elevada produção das enzimas de interesse (6,02 U/mL para atividade amilolítica e 5,52 U/mL para a atividade celulolítica). Uma segunda fermentação submersa foi realizada, fixando as variáveis que não apresentaram significância segundo o delineamento Plackett-Burman e avaliando duas concentrações de sulfato de amônio (0,25 e 0,50%). A partir disso, foi possível determinar as condições otimizadas para a produção homemade e associada de amilases e celulases bacterianas, sendo a Bactéria B em meio de cultivo com suplementação de 0,25% de sulfato de amônio como fonte de nitrogênio.
Avaliação do Sistema de Tratamento de Esgotos Parque Marinha – Rio Grande (RS)
Authors: Souza José Francisco Almeida de , Silva Carla Silva da , Brum Marília de Marco , Dutra Tuane de Oliveira
Published: July 2024

Neste artigo é feita a avaliação do desempenho de uma estação de tratamento de esgotos (ETE) e da influência do lançamento do efluente tratado na qualidade da água de um arroio local, baseada em dados operacionais, relativos ao ano de 2019, fornecidos pela CORSAN. A ETE Parque Marinha, inaugurada no início da década de 1980, consiste num sistema de lodos ativados com aeração prolongada, composto por um tanque de aeração (reator) e um decantador secundário. Para o esgoto foram avaliados os parâmetros demanda bioquímica de oxigênio, sólidos suspensos totais, demanda química de oxigênio, nitrogênio amoniacal, fósforo total, etc. No corpo receptor foram avaliados também o oxigênio dissolvido e pH. O sistema foi bastante eficiente na remoção de DBO e DQO, mas a eficiência na remoção de nutrientes, especialmente nitrogênio amoniacal, foi baixa.
Storytelling: entre usos, benefícios e aprendizagens
Authors: Bortolazzo Sandro Faccin
Published: July 2024

Contar histórias é uma prática ancestral que, ao ser remodelada na contemporaneidade, adquire outras nuances e utilizações, especialmente no âmbito dos processos pedagógicos. O presente estudo, de caráter exploratório e bibliográfico, propõe-se a analisar o storytelling como recurso didático. Para alcançar tal objetivo, três abordagens são delineadas: a realização de uma revisão de literatura sobre o storytelling; uma análise do storytelling enquanto prática pedagógica; e a identificação dos benefícios do storytelling nos processos de aprendizagem. Os resultados evidenciam que a prática do storytelling como ferramenta pedagógica não apenas engaja os estudantes, mas promove empatia e torna os conteúdos mais acessíveis, memoráveis e significativos.
Vida Filosófica e a busca pela verdade - um diálogo entre Heidegger e Foucault
Authors: Nunes da Costa Marta Rios Alves
Published: July 2024

Resumo: Neste artigo, a partir de um diálogo com Heidegger e Foucault, mediado pontualmente por um retorno aos Antigos em particular a Sócrates, procuro retomar o problema e questão da Vida filosófica, na sua relação com a busca pela verdade. O artigo tem dois momentos: no primeiro, explorei uma leitura de Filosofia enquanto caminho, e, num segundo momento, defendi que este caminho articula a dimensão ética e a dimensão política, através de uma experiência (necessária) específica de parresia pessoal. Defendo que a verdade enquanto desvelamento exige sempre a transformação do indivíduo em sujeito, isto é, em pessoa moral, o que requer, nesse processo, o compromisso com a coerência de si, através de uma prática de dizer-a-verdade.
Palavras-chave: Foucault; Heidegger; Parresia; Verdade
Philosophical Life and the search for truth - a dialogue between Heidegger and Foucault
Abstract: In this article, based on a dialogue with Heidegger and Foucault, punctually mediated by a return to the Ancients and in particular to Socrates, I try to resume the problem and question of philosophical Life, in its relationship with the search for truth. The article has two moments: in the first, I explored a reading of Philosophy as a path, and, in a second moment, I argued that this path articulates the ethical dimension and the political dimension, through a specific (necessary) experience of personal parrhesia. I argue that truth as unveiling always requires the transformation of the individual into a subject, that is, into a moral person, which requires, in this process, a commitment to self-coherence, through a practice of telling the truth.
Key-words: Foucault; Heidegger; Parrhesia; Truth
La vie philosophique et la recherche de la vérité - un dialogue entre Heidegger et Foucault
Resumé: Dans cet article, à partir d'un dialogue avec Heidegger et Foucault, médiatisé ponctuellement par un retour aux Anciens et en particulier à Socrate, j'essaie de reprendre le problème et la question de la Vie philosophique, dans son rapport à la recherche de la vérité. L'article comporte deux moments : dans le premier, j'ai exploré une lecture de la Philosophie comme voie, et, dans un second temps, j'ai soutenu que cette voie articule la dimension éthique et la dimension politique, à travers une expérience spécifique (nécessaire) de parrhésie. Je soutiens que la vérité en tant que dévoilement nécessite toujours la transformation de l'individu en sujet, c'est-à-dire en personne morale, ce qui nécessite, dans ce processus, un engagement à la cohérence de soi, à travers une pratique de dire la vérité.
Mots-clés: Foucault; Heidegger; Parrhesia; Verité
 
Data de registro: 06/09/2022
Data de aceite: 18/10/2023
A teoria das cores e das formas gráficas de Wassily Kandinsky
Authors: Dias Carvalho Jairo
Published: July 2024

Resumo: O artigo pretender elucidar a teoria das cores e das formas Gráficas de Wassily Kandinsky. Nossa interpretação é que esta teoria é uma lógica das relações entre os elementos da pintura, formas coloridas e formas gráficas. Esta lógica se baseia em uma concepção tensional da composição a partir da noção de contrariedade e de oposição. A obra de arte abstrata se apresenta como uma série de tensões internas e contrastes entre cores e formas gráficas permitindo a quem a compreende estabelecer um significado à composição. Pretendemos analisar esta lógica da composição entre as formas gráficas e coloridas permitindo que possamos discernir uma cerda ordenação destes elementos em um quadro.
Palavras-chave: Elementos da Pintura; Kandinsky; Cores; Formas Gráficas
Wassily Kandinsky's Theory of Colors and Graphic Forms
Abstract: The article intends to elucidate Wassily Kandinsky's theory of colors and graphic forms. Our interpretation is that this theory is a logic of the relationships between the elements of painting, colored forms and graphic forms. This logic is based on a tensional conception of composition based on the notion of contrariety and opposition. The abstract work of art presents itself as a series of internal tensions and contrasts between colors and graphic forms, allowing those who understand it to establish a meaning to the composition. We intend to analyze this logic of composition between graphic and colored forms, allowing us to discern a bristle ordering of these elements in a painting.
Key-words: Elements of Painting; Kandinsky; Colors; Graphic Forms
La Théorie des Couleurs et des Formes Graphiques de Wassily Kandinsky
Résumé: L'article vise à élucider la théorie des couleurs et des formes graphiques de Wassily Kandinsky. Notre interprétation est que cette théorie est une logique des relations entre les éléments de la peinture, les formes colorées et les formes graphiques. Cette logique repose sur une conception tensionnelle de la composition fondée sur la notion de contrariété et d'opposition. L'œuvre d'art abstraite se présente comme une série de tensions internes et de contrastes entre les couleurs et les formes graphiques, permettant à ceux qui la comprennent d'établir un sens à la composition. Nous nous proposons d'analyser cette logique de composition entre formes graphiques et colorées, permettant de discerner un ordre hérissé de ces éléments dans un tableau.
Mots-clés: Éléments de Peinture; Kandinsky; Couleurs; Formes Graphiques
Data de registro: 11/12/2022
Data de aceite: 18/10/2023
การศึกษาผลกระทบของน้ำมันหล่อลื่นจากการใช้น้ำมันแก๊สโซฮอล์ 95 เป็นเชื้อเพลิง
Authors: ดำรงกิจโกศล ชัยยศ ,   มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ, กระแสร์ลม เนรมิต ,   มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ
Published: July 2024

งานวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาผลกระทบของน้ำมันหล่อลื่นจากการใช้น้ำมันแก๊สโซฮอล์ 95 เป็นเชื้อเพลิง โดยนำเครื่องยนต์เบนซินขนาดเล็ก 4 จังหวะ สูบเดียว ติดตั้งเข้ากับอัลเทอร์เนเตอร์ที่ต่อกับภาระทางไฟฟ้า เพื่อทำหน้าที่เป็นภาระการทำงานของเครื่องยนต์ ซึ่งการทดสอบการสึกหรอของเครื่องยนต์ทดสอบตามมาตรฐาน 200-hr. screening test for alternative fuels (EMA 200 hours test) โดยทำการเก็บตัวอย่างน้ำมันหล่อลื่นเครื่องยนต์ก่อนทำการทดสอบ และหลังทำการทดสอบที่ 20 ชั่วโมง 100 ชั่วโมง และ 200 ชั่วโมง ตามลำดับ เพื่อนำไปศึกษาผลกระทบต่อของน้ำมันหล่อลื่นเครื่องยนต์ ผลการทดสอบพบว่า น้ำมันหล่อลื่นที่ 200 ชั่วโมง พบปริมาณความชื้น เขม่า ค่าออกซิเดชั่น และค่าไนเตรชั่นมากกว่าชั่วโมงการทำงานอื่น โดยปริมาณความชื้นและเขม่าที่ผสมอยู่ในน้ำมันหล่อลื่นมีปริมาณเท่ากับ 0.145 %wt และ 0.3 %wt ตามลำดับ ซึ่งยังอยู่ในเกณฑ์ควบคุม และพบค่าออกซิเดชัน และไนเตรชันที่สูงกว่าเกณฑ์ควบคุม ขณะที่น้ำมันหล่อลื่นที่ผ่านการใช้งานที่ 100 ชั่วโมง มีปริมาณเหล็กและอลูมิเนียมมากกว่าชั่วโมงทำงานอื่นโดยมีปริมาณเท่ากับ 84.155 ppm และ 74.495 ppm ตามลำดับ ซึ่งปริมาณปริมาณความชื้น และเขม่าที่เพิ่มขึ้นไม่ค่อยส่งผลกระทบต่อน้ำมันหล่อลื่นและเครื่องยนต์เนื่องจากยังอยู่ในเกณฑ์ควบคุม ขณะที่ค่าออกซิเดชัน และไนเตรชันที่สูงเกินเกณฑ์ควบคุมจะทำให้น้ำมันหล่อลื่นเสื่อมสภาพ ส่งผลทำให้เครื่องยนต์เกิดการสึกหรอที่มากขึ้น ขณะที่การพบโลหะในน้ำมันหล่อลื่นมากขึ้นทำให้น้ำมันหล่อลื่นสกปรก ส่งผลให้เกิดการสึกหรอแบบขูดขีด
Taxonomy for supply chain strategic decision
Authors: García-Cáceres Rafael Guillermo , Rodríguez-Álvarez Nini Johana , López-Ramírez Cesar Augusto
Published: July 2024

Objective: The characterization framework proposed in this work presents the strategic decisions and their characteristics and the strategic characterization structure of the supply chain.
Methodology: This article presents a framework for the strategic characterization of supply chains. The structure is supported by a group of studies that have identified and established the relationships between the decisions of the supply chain.
Results: The framework defines the various aspects of the chain that are described from the decision-making paradigm in a strategic environment. In this way, a decision-making selection process can be developed and a structure can be created to analyze the effectiveness of its management.
Conclusions: The present work resulted from the discovery of a research gap related to the lack of adequate support methodologies for making strategic decisions, providing a holistic view of the chain’s competitors. An attractive future research perspective could also encompass tactical decisions alongside current strategic ones.
Occurrence characteristics of ionospheric scintillations in the civilian GPS signals (L1, L2, and L5) through a dedicated scintillation monitoring receiver at a low-latitude location in India during the 25th solar cycle
Authors: Vankadara Ram Kumar , Seif Aramesh , Panda Sampad Kumar
Published: July 2024

The ionospheric post-sunset irregularities are responsible for the discrepancies in the received global navigation satellite system (GNSS) signals to fluctuate the phase and amplitude resulting in scintillations in the respective components. Ionospheric scintillations reduce the signal quality and alter the signal reception time inducing position errors which is not preferable for the precise position applications. The level of ionospheric amplitude scintillation, quantified by the amplitude scintillation index (S4), is analyzed during the year 2022, which accentuates the ascending phase of solar cycle 25. For this, we analyzed scintillation intensity and occurrence percentage at a low latitude Indian location in India by employing all the available frequencies of the global positioning system (GPS) constellation. The scintillation distribution for each month is also observed which reveals that the autumn equinox seasons has high scintillation occurrence compared to the vernal equinox seasons. The impact of the scintillation on the three civilian signals (L1, L2 and L5) of the GPS constellation is also observed in terms of the scintillation intensity distribution. The cross-correlation of the S4 index for these three signals reveals a strong correlation existing among them during strong scintillations whereas L2 and L5 signals portray a high correlation irrespective of signal intensities. In brief, the strong scintillation occurrence percentage is higher in the L5 signal compared to the L1 and L2 in contrast with weak scintillation, which is high in L1, followed by L2 and L5. Further, the analysis shows that the autumnal equinox has the highest percentage occurrence of strong scintillations (less than 10 % of the scintillation cases) compared to the vernal equinox whereas among solstice seasons June solstice presented the least scintillation occurrence at the location. The outcomes of this study instigate further analysis of scintillation occurrences from diverse GNSS frequencies covering diverse solar activity conditions for complementing the development of robust scintillation mitigation strategies across the low latitudes during the diverse scintillation conditions.
Multilateral evaluation of the effects of utilizing thorium oxide in the Bushehr VVER-1000 reactor
Authors: Lotfalian Mohammadreza , Athari Allaf Mitra , Mansouri Masoud
Published: July 2024

The use of thorium oxide in thermal reactors is currently being explored due to its promising outcomes. One primary concern is how to reduce the pollution of core components and nuclear waste. The inclusion of 232Th in the reactor leads to the production of 233U and decreases the formation of minor actinides. On the other hand, 238U increases the production of 239Pu, a toxic and strategically significant isotope, along with minor actinides. Therefore, the potential of thorium to reduce the production of 239Pu, one of the most harmful isotopes, can be assessed in the Bushehr VVER-1000 reactor. This study involved replacing some uranium in the Bushehr VVER-1000 reactor with 232Th. The research focused on examining the environmental impact of nuclear waste, including activity, chain reactions, and isotope levels, over a two-year period. The impact of the new fuel substitution was evaluated in the Bushehr reactor, which has a power of 3,000 MWth, in three scenarios: thorium addition to 1.6 % enriched assemblies, thorium addition to 2.4 % enriched assemblies, and thorium addition to 3.6 % enriched assemblies. These changes were analyzed in terms of nuclear waste contamination, plutonium production, fuel burn-up, and conversion ratio, and compared to the reactor using UO2 fuel. The simulation was conducted using the MCNPX 2.6.0 computational code and heterogeneous geometry. The results indicate that nuclear waste pollution decreased when thorium was added to the 1.6 % and 2.4 % enriched assemblies, but increased when added to the 3.6 % assemblies. Additionally, fuel burn-up increased with the addition of thorium in the 1.6 % and 2.4 % assemblies, but decreased in the 3.6 % assemblies. However, the conversion ratio increased in all cases. The fuel temperature coefficient (FTC), moderator temperature coefficient (MTC), and void coefficient (VC) were calculated and evaluated.
Museu de Arqueologia Bíblica Paulo Bork do Centro Universitário Adventista de São Paulo: os caminhos do diálogo com a comunidade
Authors: Da Silva Rodrigo Pereira , Xavier Janaina Silva
Published: July 2024

Este artigo faz uma breve análise da importância da arqueologia como instrumento pedagógico e de suas potencialidades dentro do contexto universitário. Apresenta o Museu de Arqueologia Bíblica Paulo Bork do Centro Universitário Adventista de São Paulo (UNASP), sua concepção, acervo, estrutura e organização. O texto conclui descrevendo algumas das iniciativas do museu para promover o diálogo com a comunidade.
Contra danças não há argumentos: A dança entre património e moral no âmbito de uma associação cultural portuguesa
Authors: Isnart Cyril
Published: July 2024

Esse texto apresenta o trabalho patrimonial de uma associação cultural de música e dança popular no sul do Portugal. Depois de um retrato das dimensões éticas das práticas de conservação desenvolvidas nos contextos não profissionais e não estatais do património, evidenciadas por alguns analises recentes, trate-se de disponibilizar uma descrição etnográfica sintética da associação e das suas ações de recolha, inventário e transmissão. O texto contextualiza a conceção patrimonial da associação na história dos usos da cultura popular em Portugal e na viragem política das funções políticas das patrimonializações comuns no contexto mundial.
Estratégias de conservação do patrimônio cultural material
Authors: Zanirato Silvia Helena , Cavicchioli Andrea
Published: July 2024

A discussão contemplada no texto se refere aos entendimentos acerca das intervenções realizadas sobre os elementos materiais que constituem o patrimônio cultural, em especial a conservação preventiva e o restauro, operações que objetivam prolongar a permanência física do bem e a mantê-lo em bom estado e durante a maior parte do tempo possível.
Museu, memórias sociais e patrimônios culturais
Authors: Zubaran Maria Angélica
Published: July 2024

Este trabalho analisa as memórias sociais dos moradores mais antigos que vivem no entorno do Museu de Porto Alegre Joaquim Felizardo, com o objetivo de potencializar as relações sociais entre o museu e a comunidade e contribuir para a valorização e preservação das memórias coletivas de seus moradores e dos patrimônios culturais da cidade.
Populismo na comunidade andina
Authors: Martiarena Agustina , Aldapi Vaquera Ana Carol
Published: July 2024

Questionando o conceito de populismo para estudar políticos latinomericanos da atualidade, este trabalho observa à luz das principais teorias os casos do Peru e da Bolívia, dois países com origens e demografia similares mas trajetórias e resultados diferentes. Assim observa as principais variáveis de demanda de populismo e a partir da base de dados do Latinobarómetro, elabora quadros e tabelas que apresentam algumas características de cada caso. Para finalmente revisar parte da história política para entender o contexto de cada um destes. Conclui assim que deve se estudar cada caso com maior aprofundamento e explicando suas particularidades.
Sala Coronado: exponente principal del patrimonio documental y bibliográfico de la Universidad Central “Marta Abreu” de las Villas (Cuba)
Authors: Paz Enrique Luis Ernesto
Published: July 2024

Francisco de Paula Coronado is a significant personality in 20th-century Cuban historiography and library science. Due to his outstanding work, he served as the director of the National Library "José Martí" from 1920 to 1946. Throughout his life, he devoted himself to collecting important bibliographic heritage works, including three incunabula and original manuscripts of universal history and Cuba. Due to various reasons, his library came under the custody of the Universidad Central "Marta Abreu" de Las Villas, where it is currently located. This gem of the bibliographic heritage is little known and therefore not frequently consulted by researchers and historians. This contribution aims to characterize the Coronado Collection based on the heritage values of the documents it preserves. The study was categorized as descriptive with a theoretical contribution. Classic documentary analysis was used as the main method. The history of the collection, composition of the holdings, and level of preservation were analyzed.
ON A METHOD OF CONTROLLING THE HEATER BY USING NEURAL NETWORKS
Authors: АБДУРАКИПОВ С.С. , БУТАКОВ Е.Б.
Published: July 2024

Исследуется возможность применения нейронной сети долгой краткосрочной памяти (Long short-term memory, LSTM) для моделирования работы ПИД-регулятора. Реализован программный ПИД-регулятор для управления нагревателем с датчиком температуры на микроконтроллере Arduino, и разработана LSTM-модель, обученная на данных регулятора. Показано, что модель нейронной сети хорошо воспроизводит работу регулятора и может его полностью заменить при наличии многократно большего, но достаточного времени обработки данных. Продемонстрирована возможность использования данной модели в качестве детектора аномальной работы ПИД-регулятора.

The paper studies the possibility of using a long short-term memory (LSTM) neural network to simulate the operation of a PID controller. A PID regulator has been implemented to control a heater with a temperature sensor by using the Arduino framework. An LSTM model trained on the controller data has been developed. It is shown that the neural network model quite accurately reproduces the regulator operation and can completely replace it. In addition, the applicability of this model as a detector of abnormal operation of the PID controller is shown.
EVENT-DISCRETE TRAFFIC CONTROL MODELS
Authors: ШОРНИКОВ Ю.В. , ТИМОФЕЕВ К.А.
Published: July 2024

Решается задача управления транспортным движением с помощью модельно-ориентированного метода. Для разработки математической модели предложен автоматный формализм. В строгом соответствии с условиями задачи определены состояния детерминированного конечного автомата (ДКА) и предикаты направленных переходов. Для реализации ДКА выполнен переход к диаграмме Харела (statechart) - унифицированному математическому и программному обеспечению современных мировых инструментальных средств моделирования. Решение поставленной задачи доказано конструктивно таблицей состояний с соответствующей динамикой и вычислительными экспериментами выбранного сценария в передовых отечественных и зарубежных инструментальных средах моделирования обозначенного класса событийных систем. Вычислительные эксперименты показали полное совпадение с конструктивным анализом.

The problem of traffic control is solved using a model-oriented method. To develop a mathematical model, an automaton formalism is proposed. In strict accordance with the problem conditions, the states of a deterministic finite automaton (DFA) and predicates of directed transitions are defined. To implement the DFA, a transition is made to the Harel diagram (statechart), which is a unified mathematical and software support for modern global modeling tools. The solution to the problem posed is proved constructively by a table of states with the corresponding dynamics and computational experiments of the selected scenario in advanced domestic and foreign instrumental environments for modeling the designated class of event systems. Computational experiments show complete agreement with constructive analysis.