bluuebunny/crossref_metadata_2025 huggingface dataset:
Lost in the woods: Forest vegetation, and not topography, most affects the connectivity of mesh radio networks for public safety
Authors: Zimbelman Eloise G. , Keefe Robert F.
Published: December 2022

Real-time data- and location-sharing using mesh networking radios paired with smartphones may improve situational awareness and safety in remote environments lacking communications infrastructure. Despite being increasingly used for wildland fire and public safety applications, there has been little formal evaluation of the network connectivity of these devices. The objectives of this study were to 1) characterize the connectivity of mesh networks in variable forest and topographic conditions; 2) evaluate the abilities of lidar and satellite remote sensing data to predict connectivity; and 3) assess the relative importance of the predictive metrics. A large field experiment was conducted to test the connectivity of a network of one mobile and five stationary goTenna Pro mesh radios on 24 Public Land Survey System sections approximately 260 ha in area in northern Idaho. Dirichlet regression was used to predict connectivity using 1) both lidar- and satellite-derived metrics (LIDSAT); 2) lidar-derived metrics only (LID); and 3) satellite-derived metrics only (SAT). On average the full network was connected only 32.6% of the time (range: 0% to 90.5%) and the mobile goTenna was disconnected from all other devices 18.2% of the time (range: 0% to 44.5%). RMSE for the six connectivity levels ranged from 0.101 to 0.314 for the LIDSAT model, from 0.103 to 0.310 for the LID model, and from 0.121 to 0.313 for the SAT model. Vegetation-related metrics affected connectivity more than topography. Developed models may be used to predict the connectivity of real-time mesh networks over large spatial extents using remote sensing data in order to forecast how well similar networks are expected to perform for wildland firefighting, forestry, and public safety applications. However, safety professionals should be aware of the impacts of vegetation on connectivity.
Pulmonary inflammatory response and immunomodulation to multiple trauma and hemorrhagic shock in pigs
Authors: Oestreich Marc-Alexander , Seidel Kerstin , Bertrams Wilhelm , Müller Hans-Helge , Sassen Martin , Steinfeldt Thorsten , Wulf Hinnerk , Schmeck Bernd
Published: December 2022

Background

Patients suffering from severe trauma experience substantial immunological stress. Lung injury is a known risk factor for the development of posttraumatic complications, but information on the long-term course of the pulmonary inflammatory response and treatment with mild hypothermia are scarce.

Aim

To investigate the pulmonary inflammatory response to multiple trauma and hemorrhagic shock in a porcine model of combined trauma and to assess the immunomodulatory properties of mild hypothermia.

Methods

Following induction of trauma (blunt chest trauma, liver laceration, tibia fracture), two degrees of hemorrhagic shock (45 and 50%) over 90 (n = 30) and 120 min. (n = 20) were induced. Animals were randomized to hypothermia (33°C) or normothermia (38°C). We evaluated bronchoalveolar lavage (BAL) fluid and tissue levels of cytokines and investigated changes in microRNA- and gene-expression as well as tissue apoptosis.

Results

We observed a significant induction of Interleukin (IL) 1β, IL-6, IL-8, and Cyclooxygenase-2 mRNA in lung tissue. Likewise, an increased IL-6 protein concentration could be detected in BAL-fluid, with a slight decrease of IL-6 protein in animals treated with hypothermia. Lower IL-10 protein levels in normothermia and higher IL-10 protein concentrations in hypothermia accompanied this trend. Tissue apoptosis increased after trauma. However, intervention with hypothermia did not result in a meaningful reduction of pro-inflammatory biomarkers or tissue apoptosis.

Conclusion

We observed signs of a time-dependent pulmonary inflammation and apoptosis at the site of severe trauma, and to a lower extent in the trauma-distant lung. Intervention with mild hypothermia had no considerable effect during 48 hours following trauma.
Digital Media Distribution: Portals, Platforms, Pipelines, Paul McDonald, Courtney Brannon Donoghue and Timothy Havens (eds) (2021)
Authors: Scarlata Alexa
Published: December 2022

Review of: Digital Media Distribution: Portals, Platforms, Pipelines, Paul McDonald, Courtney Brannon Donoghue and Timothy Havens (eds) (2021)

New York: New York University Press, 392 pp.,

ISBN 978-1-47980-678-2, p/bk, USD 35.00
Hibridación cultural a través de cortometrajes animados
Authors: Wang Xin
Published: December 2022

La creación y difusión de cortometrajes animados en el contexto de intercambios entre Oriente y Occidente se realizan con sus propias características, que reflejan sus identidades nacionales e hibridación cultural en la globalización. Nuestra investigación, a través de dos estudios de caso, consiste en seleccionar los elementos más representativos de dos países de Asia oriental en el siglo XXI, China y Japón, para analizar y explorar la comunicación intercultural e hibridación cultural a través del proceso de la narración, la caracterización, construcción de símbolos y las metáforas de las narrativas. La metodología utilizada ha sido de corte cualitativo con un vaciado de contenidos. Y entre los resultados más significativos podemos constatar que el desarrollo de los cortometrajes objeto de estudio, están influenciado por el contexto multicultural de los países occidentales, y su discurso tiende a verse muy influido por la comunicación y la identificación de creencias y convicciones entre oriente y occidente.
Mit gondolnak a tanulók és tanárok az iskoláról?
Authors: Czető Krisztina
Published: December 2022

kiemelt jelentőségű az iskolához való kedvező viszonyulás kialakulásának támogatása érdekében. Ez a munka az iskolai attitűd különböző területeinek mélyebb megismeréséhez, azok komplex természetének megértéséhez szeretne hozzájárulni. A tanulmány egy iskolaiattitűd-kutatás eredményeit ismerteti, melynek célja a tantárgyi attitűdök, az iskolához köthető általános attitűdök és nézetek vizsgálata, valamint egy iskolaiattitűd-kérdőív kialakítása és kipróbálása volt.
Protective Role of Quercetin Against Rotenone- Induced Hepato and Nephrotoxicity in Swiss Albino Mice
Authors: Jain Juli , Hasan Whidul , Jat Deepali , Singh Yadav Rajesh , Biswas Pronit
Published: December 2022

Rotenone is well known environmental neurotoxin used to induce Parkinson’s disease (PD) model. Numerous studies are investigated its toxicity on the brain but few studies are available that examined its toxicity on the liver and kidney. Therefore, the main aim of the present work was to explore the toxicity of rotenone on the liver and kidney and its protection through quercetin. Administration of rotenone orally at the dose of (5mg/kg b.w daily for 60 days) caused a significant increase in the levels of liver function and renal function biomarkers as compared to controls. A significant increase in the level of lipid peroxidation, nitric oxide, and decrease in the levels of reduced glutathione, reduction in the activities of catalase and superoxide dismutase were observed in the liver and kidney as compared to control. The histopathological and SEM study in rotenone-treated mice showed alteration and signs of inflammation in the liver and kidney. While co-treatment of quercetin orally (30 mg/kg b.w for 60 days) together with rotenone, reversed the above parameters. In conclusion, rotenone significantly damages the liver and kidney, and the administration of quercetin along with rotenone shown a protective role. This study provides a new insight into where rotenone-induced liver and kidney dysfunction could be successfully protected by quercetin.
A Theory on the Impact of Copper and Micronutrients Against COVID-19 in Humans
Authors: PGDip AMP EHP-C Caitlin A. Connor DAOM , PGDip AMP EHP-C Caitlin A. Connor DAOM
Published: December 2022

Copper (Cu) has a strong impact on the function of the immune system through several different pathways. These impacts include helping the function of monocytes, neutrophils, and macrophages, and enhancing Natural Killer cells’ activities. Cu also has a role in antimicrobial properties and inflammatory response. It is also important for IL-2 production and response, which is a component of adaptive immune cells. Additionally, Cu has multiple roles in both proliferation and differentiation of T cells and is involved in the production of antibodies. Cu deficiency can even lead to "increased viral virulence"1. Copper has a long history of use in medicine, and has continued to be used for purification of water, including use in hospitals to prevent legionnaires disease. The CDC pre released information on a study completed in March 2020 on the lifespan of COVID-19 on different surfaces which included its lifespan on copper, where it was completely dead within 4 hours. In addition, "Several reports demonstrated that Cu deficiency weakens the human immune response" 2. Given the multiple avenues of impact, it has been suggested that Cu supplementation, within recommended levels, be given to individuals who are low in Cu to help them fight off COVID-19. It is also possible that Cu supplementation, within recommended levels, may help prevent COVID-19 infection, or help individuals who are not low in Cu to fight off COVID-19 infection. However, dosage would have to be carefully managed, as excess levels of Cu can lead to both neurodegenerative and neurodevelopmental diseases.
Levante dos Mantos
Authors: Castro Laura , Fonseca Carolina Ferreira
Published: December 2022

Este texto faz uma reflexão dos levantes mobilizados pela Arte Indígena Contemporânea, mais especificamente aqueles enredados pelas giras e voltas que o manto tupinambá tem desenhado no diagrama da dita arte contemporânea brasileira.  A partir das exposições Um outro céu (2020) e Kwá Yepé Turusú Yuriri Assojaba Tupinambá - Essa é a grande volta do manto tupinambá (2021),  ambas agregadas em torno do trabalho de Glicéria Tupinambá e na ativação “Ativação Morî' erenkato eseru' - Cantos para a vida”, realizada por Daiara Tukano e Jaider Esbell, na exposição Véxoa: nós sabemos (2020), o Levante dos mantos reúne um conjunto de confrontos éticos-estéticos e políticos ante a autoridade e a naturalização do espúrio e dos saqueamentos coloniais, na expectativa de fazer ressoar as incessantes disputas de narrativas no campo das artes, com protagonismo do movimento autodeclarado como Arte Indígena Contemporânea (ESBELL, 2020).
Redes Sociais e a prefeitura de Curitiba: O Caso da Página do Executivo Municipal no Facebook
Authors: Barriento André Luiz , Tavares Débora Cristina , Leite José Carlos
Published: December 2022

Resumo
Cinema brasileiro contemporâneo e seu interesse nos jovens de classe média urbana: um olhar prospectivo
Authors: Oliveira Rodrigo Bomfim , Albuquerque Eliana Cristina Paula Tenório de
Published: December 2022

Resumo
Trabalho docente na américa latina: desafios ao campo da pesquisa e às políticas educacionais / Teaching in latin america: research and educational policies challenges
Authors: Oliveira Entrevista com Dalila Andrade de , Hypolito Álvaro Moreira
Published: December 2022

A entrevista trata de temas referentes a trabalho docente e pesquisa, assim como das formas de organização de pesquisadores na America Latina. Discute também as políticas de avaliação nos anos 90 e seus impactos sobre o trabalho docente, em termos de sofrimento, intensificação e precarização do trabalho. Nesse aspecto é trazida a contribuição da pesquisa nacional sobre trabalho docente realizada pelo GESTRADO. Aborda, ainda, aspectos da políticanacional, tais como a Conferência Nacional de Educação e o Plano Nacional de Educação. Por fim, discute o tema da regulação e novas perspectivas para a educação e o trabalho docente. Palavras-chaves: Trabalho docente; políticas Educacionais; América LatinaABSTRACT:This interview discusses issues related to teachers' work and research, as well as how researchers in this field are organizing a network in Latin America. The 90's policies in education, mainly those related to accountability, high-stake tests and evalutation are discussed, considering their impacts on teachers' work, in terms of suffering, emotional stress, intensification and precarization. In this sense, is bring forward the findings of the GESTRADO's national survey on teachers' work. The interview also addresses aspects of brazilian educational policies, such as the National Education Conference and the National Education Plan. Ultimately, the interviewee introduces the issue of regulation and discusses a lillte bit more about new perspectives in education and teachers' work. Keywords: Teacher work; Educational policies; Latin America
Políticas De Educação No Contexto Indígena: Discursos E Práticas / Education Policy In The Brazilian Native Context: Discourse And Practices / Politiques D'éducation Dans Un Contexte Indigène: Discours Et Pratiques
Authors: Souza Ilma Regina Castro Saramago de , Bruno Marilda Moraes Garcia
Published: December 2022

RESUMO: O presente trabalho tem como objetivo apresentar e analisar as políticas educacionais conquistadas pelos povos indígenas no Brasil, desde a sua colonização. O estudo é um recorte da pesquisa em andamento, desenvolvida no Programa de Mestrado em Educação da Universidade Federal da Grande Dourados, cuja temática abarca a investigação de questões relacionadas à leitura e à escrita de crianças indígenas Guarani e Kaiowá, na região da Grande Dourados, no Estado de Mato Grosso do Sul. É uma pesquisa qualitativa, de cunho etnográfico, baseada nos estudos culturais. Para tanto, utilizou-se para este estudo, revisão da literatura sobre a temática, bem como documentos oficiais sobre as políticas educacionais em vigor no Brasil.ABSTRACT: This paper aims to present and analyze educational policies achievements of the Brazilian Native people since the colonization of Brazil by the Potuguese. The study is part of ongoing research at the Universidade Federal da Grande Dourados (Federal University of Greater Dourados), covering research issues related to reading and writing of children of the Guarani and Kaiowá nations, living in the Greater Dourados area, Mato Grosso do Sul state. It is a qualitative research, ethnographic, based in cultural studies. Review of literature on the topic, as well as official documents on educational policies in force in Brazil was used for this study.RÉSUMÉ: ce travail présente et analyse les politiques d'éducation conquises par les peuples indigènes au Brésil, depuis sa colonisation. Il fait partie d'une recherche en cours, développée dans le cadre du Programme de Master en Éducation de l'Universidade Federal da Grande Dourados, dont la thématique inclut l'investigation de questions liées à la lecture et à l'écriture d'enfants indigènes guarani et kaiowá, dans la région du grand Dourados, dans l'état du Mato Grosso do Sul. Il s'agit d'une recherche qualitative à caractère ethnographique inspirée des études culturelles et fondée sur une révision de la littérature sur ce thème et une consultation de documents officiels sur les politiques d'éducation en vigueur au Brésil.
HETERARQUIAS E 'GOVERNANÇA FILANTRÓPICA' GLOBAL: IMPLICAÇÕES E CONTROVÉRSIAS PARA O CONTROLE SOCIAL DAS POLÍTICAS PÚBLICAS.
Authors: Olmedo Antonio
Published: December 2022

Este artigo aprofunda reflexões sobre o processo de "governance filantrópica", mediante análises sobre a estrutura e as práticas de organizações filantrópicas, seus discursos, conexões, influências ideológicas e agendas para a mudança. Os delineamentos metodológicos da pesquisa são referenciados na "etnografia da rede", uma nova abordagem que combina ferramentas da Social Network Analysis (SNA) com métodos etnográficos tradicionais. Os dados evidenciam processos de materialização de um "novo regime de governança global" onde os discursos em torno da educação e do desenvolvimento têm o efeito de tornar populações economicamente úteis e politicamente dóceis em relação aos interesses globais dominantes. Apesar de sua aparente novidade, as motivações e atividades dos novos filantropos não diferem, em essência, das antigas formas do imperialismo cultural.
O IMPÉRIO DAS PRIMEIRAS LETRAS: EPÃTOME DE UMA HISTÓRIA DE CARTILHAS DE ALFABETIZAÇÃO NO SÉCULO XIX
Authors: Vojniak Fernando
Published: December 2022

Este artigo é um resumo de alguns dos principais argumentos da tese "O império das primeiras letras: uma história da institucionalização da cartilha de alfabetização no século XIX" defendida no Programa de Pós-Graduação em História da Universidade Federal de Santa Catarina, em Junho de 2012. A tese consiste de uma abordagem histórica dos manuais destinados ao ensino da leitura e da escrita no período imperial brasileiro e segue três linhas de investigação: as condições da produção, as condições da autoria e as condições da leitura
AS CONFIGURAÇÕES DO FINANCIAMENTO EDUCACIONAL APÓS A APROVAÇÃO DO NOVO PLANO NACIONAL DE EDUCAÇÃO
Authors: Marcelino Pinto José , Cara Daniel
Published: December 2022

Resumo: As configurações do financiamento educacional após a aprovação do novo Plano Nacional de Educação. A entrevista aborda aspectos relacionados ao financiamento da educação, ao direito à educação, à qualidade do ensino e valorização dos profissionais da educação no contexto posterior à aprovação do Plano Nacional de Educação. Tendo como referência o atual cenário político e econômico, são apresentadas importantes reflexões sobre os principais contributos do novo Plano Nacional de Educação e os desafios para o cumprimento das metas estabelecidas pelo documento. Os entrevistados realizam ainda reflexões sobre as principais pautas para as associações acadêmicas e entidades da sociedade civil na ininterrupta luta em prol do direito à educação.
CLASSES HOSPITALARES NO MUNICÍPIO DO RIO DE JANEIRO: AS VOZES DAS PROFESSORAS
Authors: Do Amaral Daniela Patti
Published: December 2022

Este artigo focaliza saberes e prática docente de professoras atuantes em quatro classes hospitalares no município do Rio de Janeiro. Foram entrevistadas nove professoras que trabalhavam em quatro classes hospitalares vinculadas à Secretaria Municipal de Educação da Cidade do Rio de Janeiro e observadas atividades do cotidiano nas classes hospitalares e enfermarias pediátricas dos hospitais. Ao final, derivamos dos resultados da pesquisa algumas considerações e sugestões, com o propósito de reafirmar o caráter pedagógico-educacional das classes hospitalares. Defendemos igualmente a formulação de um projeto pedagógico compatível com a demanda de alunos hospitalizados, além de propor medidas para aprimorar a formação em serviço dos docentes das classes hospitalares.
LA GESTION DE LA DIVERSITE CULTURELLE PAR LES CHEFS D'ETABLISSEMENT REVUE DE LA LITTERATURE
Authors: Bauer Stéphanie , Akkari Abdeljalil
Published: December 2022

Contemporary education systems need to address increasing Cultural diversity of students and the need to a change of perspective. From a problem to solve, cultural diversity can become an opportunity to improve learning. This article presents a synthesis of literature on the role of school principals in the management of cultural diversity. The academic literatureÂ Â on this issue is very heterogeneous. We present the main theoretical and conceptual debates. The notion of social justice appears to representÂ Â an innovative concept likely to destabilize unequal power relations between groups. The text discusses the professionalization of principals. This article highlights a tension between two visions of school leadership in the management of cultural diversity: a vision linked to critical pedagogy that develops multicultural education as a means to promote social justice and transformation of school structures. On the other side, an approach centered on management of education with a more focused approach towards measurable learning outcomesÂ Â and greater control of the cost of education.
A TEORIA DAS REPRESENTAÇÕES SOCIAIS E O PROEJA: POR UMA ANÁLISE ESCOLAR
Authors: Da Silva Cristiana Barcelos
Published: December 2022

Objetivou-se, com esta pesquisa, compreender as representações sociais dos docentes que atuavam em uma instituição federal pública, localizada no interior norte do estado do Rio de Janeiro, sobre a proposta de Educação para Jovens e Adultos integrada à  Educação Profissional (PROEJA). Em um primeiro momento, foi feita uma reflexão histórica sobre a Educação de Jovens e Adultos (EJA) no Brasil, bem como acerca das políticas para essa modalidade. Em seguida, fez-se referência ao PROEJA e, por último, foram analisados os dados obtidos por meio da aplicação de um instrumento de geração de dados, a fim de alcançar o objetivo da pesquisa.
ENTREVISTA COM ELIANE ALBUQUERQUE: COMO VOCÊ VÊ O PNAIC HOJE?
Authors: Albuquerque Eliane
Published: December 2022

Possui graduação em Pedagogia pela Universidade Federal de Pernambuco (1989), mestrado em Psicologia Cognitiva pela Universidade Federal de Pernambuco (1994) e doutorado em Educação pela Universidade Federal de Minas Gerais (2002). Atualmente é professora associada da Universidade Federal de Pernambuco. Possui experiência na área de Educação, com ênfase em Linguagem, atuando principalmente nos seguintes temas: alfabetização, letramento, formação de professores, leitura e escrita na Educação Infantil, Ensino Fundamental e EJA.
Estratégias pedagógicas para estudantes com altas habilidades/superdotação: opinião de educadores
Authors: Reis Verônica Limas dos , Remoli Taís Crema , Capellini Vera Lucia Messias Fialho
Published: December 2022

A legislação brasileira prevê o aprofundamento e o enriquecimento de aspectos curriculares para alunos com Altas Habilidades/Superdotação (AH/SD) por meio de desafios suplementares nas classes comuns, em sala de recursos ou em outros espaços definidos pelos sistemas de ensino. Por este motivo, o objetivo deste estudo foi verificar o conhecimento de educadores, participantes de um curso lato sensu denominado "Especialização em Educação Especial na área de Altas Habilidades/ Superdotação" na modalidade semipresencial, sobre estratégias pedagógicas para estudantes com AH/SD. A coleta de dados ocorreu em três turmas e, para tanto, os participantes assistiram a duas animações que apresentavam situações no ambiente escolar e deveriam escolher uma delas para discutir quais mudanças poderiam ocorrer na animação, amparados legalmente pelas políticas nacional e estadual. Para compor a amostra, foi estabelecido como critério de inclusão somente os relatos que se reportaram à área do curso (AH/SD). Os dados foram analisados conforme Análise de Conteúdo de Bardin, com relatos quantificados e distribuídos entre categorias não mutuamente exclusivas. Os resultados mostraram que dos 33 participantes que compuseram a amostra, 21 (63,64%) se reportaram às estratégias pedagógicas conforme solicitava a comanda da atividade. Os relatos também discorreram sobre outras temáticas, como: legislação (13); características do estudante com AH/SD (9); necessidades do professor (9); e indicação do estudante à Sala de Recursos, ou para avaliação para ratificar o diagnóstico de AH/SD ou ainda para a equipe gestora providenciar um trabalho conjunto (8). Considera-se que estratégias pedagógicas diversificadas, motivadoras, criativas, desafiadoras e instigantes são exigências mínimas para estudantes com AH/SD; porém, cabe ao(s) professor(es) avaliar e planejar atividades condizentes com as habilidades de cada aluno.
Solvent effect, dipole moment, and DFT studies of multi donor–acceptor type pyridine derivative
Authors: Alarfaji Saleh S. , Al-Sehemi Abdullah G. , Pannipara Mehboobali
Published: December 2022

A donor–acceptor substituted derivative 2,6-diamino-4-(3,4,5-trimethoxy-phenyl)-pyridine-3,5-dicarbonitrile (DTPP) has been synthesized and its photophysical properties have been studied. Effect of solvent on the photophysical features of DTPP has been undertaken by steady state absorption and emission techniques. Strong solvatochromic emission has been observed due to intramolecular charge transfer characteristics, upon changing the solvent polarity, revealing the highly polar character of the excited state. Dipole moment changes between the excited and ground state have been estimated by using the theory of solvatochromism from Lippert–Mataga and Reichardt’s correlations. The geometrical parameters for ground and excited states, conformational flexibility, and NLO behavior of the molecule have been theoretically investigated. The electronic distributions of DTPP in HOMO and LUMO were also investigated using density functional theory (DFT) methods at B3LYP/6-31 G** level. The correlation of experimental results with theoretical predictions obtained via DFT substantiates the presence of polarity dependent of the emission spectra.
Microstructure, mechanical properties and corrosion resistance of friction stir welded joint of Al–Mg–Mn–Zr–Er alloy
Authors: Yang Zhenzhao , Ji Peng , Wu Ruizhi , Wang Yang , Turakhodjaev Nodir , Kudratkhon Bakhadirov
Published: December 2022

The microstructure, mechanical properties and corrosion resistance of friction stir welded joint of Al–Mg–Mn–Zr–Er alloy were investigated under three FSW parameter sets: 800 rpm × 100 mm min−1, 800 rpm × 80 mm min−1 and 600 rpm × 80 mm min−1. The microstructural transformation sequence of welded joint is discontinuous dynamic recrystallization, dislocation introduction, dynamic recovery and continuous dynamic recrystallization. The mechanical properties of welded joint are highly correlated with the welding process parameters. The welded joint can obtain good tensile strength and elongation under the parameters of 800 rpm × 100 mm min−1. Corrosion resistance of welded joints has little correlation with welding parameters, but is mainly related to different positions of welded joints. The main influencing factor is grain structure state. The intergranular corrosion susceptibility is related to β(Al3Mg2) phase.
Asymptotic behavior of solutions toward the constant state to the Cauchy problem for the non-viscous diffusive dispersive conservation law
Authors: Yoshida Natsumi
Published: December 2022

In this paper, we investigate the asymptotic behavior of solutions to the Cauchy problem
for the scalar non-viscous diffusive dispersive conservation law
where the far field constant state is prescribed.
We prove that the solution of the Cauchy problem tends toward the constant state
as time goes to infinity.
Impacts of COVID-19 on U.S. Seafood Availability
Authors: Anderson James L. , Asche Frank , Garlock Taryn , Hegde Shraddha , Ropicki Andrew , Straume Hans-Martin
Published: December 2022

Seafood is the food group with the highest share traded, and the U.S. is the world’s largest seafood importer, importing 79% of the seafood consumed. Hence, a study examining the impacts of the measures to contain COVID-19 on U.S. seafood imports will not only show how U.S. seafood availability has been affected, but will also give strong indications of how resiliently the global seafood markets have worked through the pandemic. We find that U.S. imports of seafood actually increased in 2020 and 2021, suggesting supply chains were able to adapt to potential disruptions. Moreover, for the 14 largest product forms imported to the U.S., there are no strong price movements. Given that there is a global market for most species groups, this adaption also suggests that the markets have worked quite well beyond the U.S. Hence, while there have undoubtedly been market shocks associated with the COVID-19 measures such as the reduction in demand from the restaurant sector and the increased sales in the retail sector, opportunities seem to balance out challenges, and the supply chains for seafood to the U.S. have been highly resilient.
Quality aware path finding algorithm for mixed line rates WDM/DWDM networks
Authors: Sahu Shakrajit , Clement Christopher John
Published: December 2022

The optical network plays a vital role in the current technology for providing high-speed data communication, which the networks operate at Tb/s. In this case, different modulation techniques can be used for different line rates to achieve high-speed data transmission. The light paths and various data rates such as 10, 40, and 100 Gb/s are the important parameters for mixed line rate networks. The wavelengths and line rates are powerful tools for mixed line rates networks. It can exist on different optical fibers. In this paper, advanced modulation techniques achieve a relative performance with the required Q-factor. This paper analysis for different matrix computations to achieve a superior Q-factor. It can affect the data rates and quality of transmission. This paper also proposed an algorithm that can improve the Q-factor. Q-factor is analyzed and proposes routing and wavelength assignment (RWA) techniques based on the Q-factor obtained at different line rates. This paper is a brief overview of a quality-aware path-finding algorithm for mixed line rates WDM/DWDM networks are present and discussed.
Performance characteristics of single Bragg grating fiber under various filter impulse functions and grating filter profiles
Authors: Rashed Ahmed Nabih Zaki , Altahan Baraa Riyadh , Ahammad S.K. Hasane , Daher Malek G. , Hossain Md. Amzad , Smirani Lassaad K.
Published: December 2022

This work has demonstrated the performance characteristics of single Bragg grating fiber under various filter impulse functions and grating filter profiles. Single fiber Bragg grating (FBG) power propagation, grating index change, coupling coefficient and apodization variations versus grating length variations is demonstrated at the central wavelength of 1550 nm by using both Hamming, Blackman impulse filter function and Hamming, Blackman grating profile. As well as the single FBG power spectrum, delay, dispersion, transmittivity/reflectivity are simulated and clarified against wavelength variations using both Hamming, Blackman impulse filter function and Hamming, Blackman grating profile. The Hamming impulse function filter and Hamming grating profile have clarified better performance than Blackman impulse function filter and Blackman grating profile.
A novel energy efficient routing technique for SDN-enabled underwater WSNs using free-space optical communication
Authors: Tyagi Vikas , Singh Samayveer
Published: December 2022

Free-space optical (FSO) wireless sensor network is rapidly growing for underwater communication applications. However, the high-energy loss and propagation distance are the key concerns during data transmission in SDN-enabled underwater wireless sensor networks (UWSNs). In addition, long-distance free-space data transmission in UWSNs relies heavily on FSO communication. Thus, FSO communication is integrated with SDN-enabled UWSNs to maximizing the network lifespan called SDN-enabled free-space optical underwater wireless sensor networks (FSO-UWSNs). Furthermore, clustering and routing can effectively balance the network load for energy-efficient data delivery in SDN-enabled FSO-UWSNs. However, choosing the optimal control nodes (CNs) in clustering is considered as an NP-hard problem. Accordingly, self-adaptive genetic approach-based particle swarm optimization (SAGA-PSO) is proposed as a cluster-based routing to optimize the CNs in heterogeneous SDN-enabled FSO-UWSNs. The proposed hybrid model of metaheuristics and genetic mutation, in which the native PSO is amended with the self-adaptive inertia weights and genetic mutation operation to identify the CNs based on genetic diversity dynamically. In addition, a novel fitness function is proposed to balance the cluster size by considering the most significant parameters like energy and distance of network devices. The SAGA-PSO is simulated using the ns-3 simulator, and SDN policies are controlled via the ONOS controller. Moreover, the proposed nature-inspired SAGA-PSO approach outperforms the existing state of arts by considering the performance metrics such as; alive nodes, stability period, average residual energy, the packet transmitted to CS, average delay, and fitness value.
Performance analysis of free space optic transmission link for broadband access networks
Authors: Kamal Mustafa , Khan Jahanzeb , Khan Yousaf , Ali Farman , Ali Taimur
Published: December 2022

Since the last two decades free space optical (FSO) communication transcends the RF communication and microwave systems because of its capability of carrying high bandwidth, license-free, long-range, small size, high bandwidth, low cost and ease of deployment. FSO communication has few limitations as well like beam dispersion, scintillation, weather effects etc. This paper demonstrates the implementation of FSO link and analysis of transmission performance of FSO channel for broadband access networks. The proposed FSO link is simulated in opti-system to analyze the physical characteristics of transmitter and receiver. The transmission performances of FSO link are validated using on/off keying (OOK) and differential phase shift keying (DPSK) at various atmospheric conditions with different data rates and transmission ranges. The transmission performance of the FSO link is analyzed under the influence of key parameters like launch power, beam divergence, atmospheric attenuation, receiver sensitivity and receiver aperture. The proposed model of the FSO link is investigated using key parameters like optical signal to noise ratio (OSNR), noise figure and bit error rate (BER).
Single fiber grating profile multi scan parameters for the optimization of grating parameters by using OptiGrating simulation
Authors: Rashed Ahmed Nabih Zaki , Altahan Baraa Riyadh , Manasavenna Thaticharla , Priya P. Poorna , Krishna M. Rama , Ahammad SK Hasane , Hossain Md. Amzad , Mohsen Salah
Published: December 2022

The paper reported the single fiber grating profile multi scan parameters for the optimization of the grating parameters by using OptiGrating program. The transmission/reflection spectrum of single grating fiber is reported versus variations of grating wavelength. Input–output pulse intensity of single grating fiber is clarified against the time span after the link length of 100 km. Fiber grating bandwidth, fiber grating side-lobes, fiber grating peak value and fiber grating pulse dispersion variations are clarified versus the scan parameter variations. The scan parameter can help the user in order to find the optimized grating parameters to meet the application requirements. As well as the optimized fiber grating amplitude/phase impulse response variations are outlined against the grating length variations.
Asymmetric 160/80 Gb/s TWDM PON with supported transmission method utilizing FBG and DML
Authors: Abdulla Essam N. , Abass Abdulla K. , Abdulkafi Ayad A.
Published: December 2022

The primary objective of time wavelength-division multiplexing passive optical networks (TWDM-PONs) development at the moment is the cost-effective capacity acquisition. This work addresses this issue by demonstrating a full-system TWDM-PON was selected as a primary choice to NG-PON2 by Full-service access network (FASN) unanimously agreed and International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) G.989. An asymmetric TWDM NG-PON2 was demonstrated that provides 160 Gbps downstream and 80 Gbps upstream which is the target capacity by ITU-T G.989.1 based on OptiSystem-7 software. We propose to use fiber Bragg grating (FBG) and Er-doped fiber amplifier (EDFA) to reduced both of the chromatic dispersion effect and system attenuation until given permission to enhance the distance communication system. The proposed system’s performance is evaluated and compared with other works and ITU-T G.989.2 recommendations to demonstrate how the system can be enhanced in terms of capacity, link distance, bit error rate (BER), Q-factor and receiver sensitivity. According to the results, the optimum possible distance under communication requirements (6 for the Q-factor and 10−9 for the BER) is around 65 km for the system with dispersion compensation. With the help of the low-cost directly modulated laser (DML) for uplink, we successfully improve the power budget to 41.2 dB along 65 km of bidirectional fiber at a 1:512 splitting ratio.
Vaginal progesterone for the prevention of preterm birth: who can benefit and who cannot? Evidence-based recommendations for clinical use
Authors: Conde-Agudelo Agustin , Romero Roberto
Published: December 2022

Vaginal progesterone (VP) has been recommended to prevent preterm birth (PTB) in women at high-risk. However, there is controversy as to whether VP is efficacious in some subsets of high-risk women. In this review, we examined the current best evidence on the efficacy of VP to prevent PTB in several subsets of high-risk women and provided recommendations for its clinical use. Compelling evidence indicates that VP reduces the risk of PTB and improves perinatal outcomes in singleton gestations with a short cervix (≤25 mm), both with and without a history of spontaneous PTB. VP appears promising to reduce the risk of PTB in twin gestations with a short cervix (≤25 mm) and in singleton gestations conceived by assisted reproductive technologies, but further research is needed. There is no convincing evidence that supports prescribing VP to prevent PTB in singleton gestations based solely on the history of spontaneous preterm birth. Persuasive evidence shows that VP does not prevent PTB nor does it improve perinatal outcomes in unselected twin gestations and in singleton gestations with a history of spontaneous PTB and a cervical length >25 mm. There is no evidence supporting the use of VP to prevent PTB in triplet or higher-order multifetal gestations, singleton gestations with a positive fetal fibronectin test and clinical risk factors for PTB, and gestations with congenital uterine anomalies or uterine leiomyoma. In conclusion, current evidence indicates that VP should only be recommended in singleton gestations with a short cervix, regardless of the history of spontaneous PTB.
Influence of production process-induced surface topologies at varying roughness depths on the tribological properties of polyamide steel contact
Authors: Schubert Dominik , Rohrmoser Andreas , Herzog Christoph , Wolf Michael , Hagenah Hinnerk , Merklein Marion , Drummer Dietmar
Published: December 2022

Friction and wear in a tribological system are directly dependent on the surface structure and roughness of the friction partners involved. In this article, a clear interaction between surface topologies and their roughness depth was identified for the material pairing polyamide 66 – steel. The typical correlation between roughness and wear, initially decreasing and increasing after a wear minimizing roughness, was found for all surface topologies, albeit at different levels. The effect of the surface topology is negligible at low roughness (S

z
 < 2.0 µm) with adhesive wear processes determining the wear behaviour. At higher roughness depths (S

z
 > 2.0 µm), the ability of the surface topology to form a stable transfer film determines the tribological behaviour by limiting the effect of abrasive wear processes. A stable transfer film is formed with sufficient roughness and undercuts in the direction of motion, which can be characterised by the average roughness depth, R

z
, in the direction of motion. Based on these empirical results, an explanatory model for the observed behaviour is presented.
Study of molecular interactions of monoethanolamine with some higher alcohols at 298.15 K
Authors: Bhadane Sanjay Jagannath , Patil S. R.
Published: December 2022

Experimental measurements of the viscosity, density, and ultrasonic parameters of monoethanolamine (MEA) with 1-butanol, 1-pentanol, and 1-hexanol were carried out at 298.15 K. The excess molar volume (V
E), viscosity change (Δη), and isentropic compressibility (ΔK
s) are calculated using the viscosity, density, and ultrasonic velocity data. A polynomial equation of the Redlich-Kister type was used to fit these values. With increasing mole fraction, the viscosity, the density and the ultrasonic velocity increase. As the concentration of MEA rises, the excess molar volume falls. All V
E values for MEA and 1-hexanol are positive, meaning that V
E increases. At all concentrations, isentropic compressibility and viscosity change exhibit negative values.
Using SuperClomeleon to Measure Changes in Intracellular Chloride during Development and after Early Life Stress
Authors: Herstel Lotte J. , Peerboom Carlijn , Uijtewaal Sten , Selemangel Dunya , Karst Henk , Wierenga Corette J.
Published: December 2022

Intraneuronal chloride concentrations ([Cl−]i) decrease during development resulting in a shift from depolarizing to hyperpolarizing GABA responses via chloride-permeable GABAAreceptors. This GABA shift plays a pivotal role in postnatal brain development, and can be strongly influenced by early life experience. Here, we assessed the applicability of the recently developed fluorescent SuperClomeleon (SClm) sensor to examine changes in [Cl−]iusing two-photon microscopy in brain slices. We used SClm mice of both sexes to monitor the developmental decrease in neuronal chloride levels in organotypic hippocampal cultures. We could discern a clear reduction in [Cl−]ibetween dayin vitro(DIV)3 and DIV9 (equivalent to the second postnatal weekin vivo) and a further decrease in some cells until DIV22. In addition, we assessed alterations in [Cl−]iin the medial prefrontal cortex (mPFC) of postnatal day (P)9 male SClm mouse pups after early life stress (ELS). ELS was induced by limiting nesting material between P2 and P9. ELS induced a shift toward higher (i.e., immature) chloride levels in layer 2/3 cells in the mPFC. Although conversion from SClm fluorescence to absolute chloride concentrations proved difficult, our study underscores that the SClm sensor is a powerful tool to measure physiological changes in [Cl−]iin brain slices.
Implementation of Pancasila Values Against the Prevention of Radicalism Movement in the Digital Age
Authors: Walid Hafidz Muhammad Dzidan
Published: December 2022

Indonesia is a country that has extraordinary diversity, from culture to religion. Indonesia has a state basis, namely Pancasila, where every item of Pancasila has a meaning or content that must be understood by every citizen. Every Indonesian citizen is obliged to choose one religion that he adheres to. Indonesia has six religions that are mutually tolerant. However, there are some people who do not understand Pancasila so that radical movements appear. The purpose of this study is to examine the important role of Pancasila in society and to analyze the importance of understanding Pancasila values ​​in everyday life for the sake of creating tolerance among others. While this research method is a qualitative descriptive research method. The results of this study in this digital era, Indonesian people will understand the importance of Pancasila values ​​as the basis of the state that must be implemented in everyday life. Indonesian people will also have a high sense of tolerance among others and uphold the motto of Bhinneka Tunggal Ika. So that Indonesia will become a harmonious religious country without any elements of war from within, let alone religious social movements that smell elements of radicalism.
Mainstreaming the Position of Media for Good Governance in Combating Corruption in Indonesia
Authors: Alam Muhammad Bachrul , Haidar Hafid Umar , Shafei Muhammad , Abidin Muhammad Irfanul , Malik Akbar Sauqi
Published: December 2022

Media is one of the important pillars in democracy. In many conditions, the media is also considered to have an important role in encouraging the creation of good governance, one of which is encouraging massive efforts to prevent corruption and enforce the law. Various cases prove that with various media discourses and types of news in the community, it helps encourage various disclosures of corruption cases and encourages cleaner, transparent, and better governance. This study aims to analyze the prevention of corruption through good governance through media encouragement. This study also aims to describe and analyze the role of the media in encouraging various efforts to prevent corruption. The method in this study is a normative legal study where the research only examines various theories and legal norms as well as social theories in corruption and governance.
Online Prostitution in Media Social: How is the Victim Protection?
Authors: Rosdiana Agita Chici
Published: December 2022

The focus of this study is to analyze the online prostitution that is rife in the development of crime motives today, and how it is held accountable to those involved in prostitution, including recipients of commercial sex workers.  Online prostitution has mushroomed among the public and can even be accessed by ordinary people, many use this illegitimate business as a livelihood plus is an element of criminal acts, namely fraud where there are victims of commercial sex worker service users this very often happens because it is so vulnerable to committing fraud on social media plus the object of fraud related to sexual activity.  The approach in this study is a comparison of law and legal interpretation within the framework of normative legal research. This study uses secondary data derived from various legal rules and related legislation. This research finds and emphasizes that the development of information and technology flows through social media presents challenges in victim protection efforts, especially in the case of online prostitution. Various studies have found that the motive for online prostitution that is rampant in Indonesia begins with fraud and fake accounts. The study also confirms that users of commercial sex worker services can be criminalized using local regulations governing prostitution, the enactment of the Lex Specialist Lex Generalis principle. Victims of fraud or commercial sex workers who are deceived by pimps or sex workers can be convicted of supporting prostitution activities in cyberspace. Victims of prostitution are not only adults but there is an element of coercion to young children to carry out prostitution, this is supported by several factors, namely environmental factors or economic factors.
The role of procalcitonin in the follow-up of medullary thyroid cancer
Authors: Censi Simona , Manso Jacopo , Benvenuti Teresa , Piva Ilaria , Iacobone Maurizio , Mondin Alberto , Torresan Francesca , Basso Daniela , Crivellari Gino , Zovato Stefania , Mian Caterina
Published: December 2022

Objective

Calcitonin (Ct) represents the most important biochemical marker of medullary thyroid cancer (MTC), but has certain limits. We analyzed the performance of procalcitonin (ProCt) in follow-up MTC patients.

Methods

In this monocentric and retrospective study, we consecutively obtained ProCt and Ct values from all MTC patients that we visited during the period from April 2021 to May 2022. Patients were defined as having structural evidence of disease (29/90, 32.2%) irrespective of Ct values or, in its absence, as not evident disease (NED) if Ct was ≤10 ng/L (47/90, 52.2%), or minimal residual disease if Ct was >10 ng/L (14/90, 15.6%).

Results

Ct and ProCt values were highly correlated (r = 0.883, P < 0.01). Median ProCt values differed between NED, minimal residual disease, and structural disease, being 0.04 ng/mL, 0.26 ng/mL, and 1.98 ng/mL, respectively (P < 0.01). ProCt was undetectable (<0.04 ng/mL) in 40/47 (85.1%) of NED patients, in 3/14 (21.4%) patients with minimal residual disease and in none of the patients with a structural disease (P < 0.01). Among the 11 patients with detectable but ≤10 ng/L Ct and undetectable ProCt values, none had a structural disease. The most accurate cut-off of ProCt to distinguish between the presence or absence of a structural disease was >0.12 ng/mL (P < 0.01, area under the curve: 0.963), with the following sensitivity, specificity, positive predictive value, and negative predictive value (NPV): 100%, 83.61%, 74.4%, and 100.0%.

Conclusions

ProCt and Ct have a high correlation in MTC follow-up. ProCt may be useful as an adjunct to Ct, especially for its NPV concerning the structural disease.