bluuebunny/crossref_metadata_2025 huggingface dataset:
Resolving the Jangling Discords of Inconsonant Nations
Authors: Einsohn Howard Ira
Published: May 2021

This article argues that the synergy between Bernard Shaw, Martin Luther King Jr., and the renowned French philosopher Paul Ricoeur—particularly with respect to the latter's dialectic of ideology and utopia—constitutes the best chance the human species has for achieving planetary wellness and avoiding biological extinction, or worse. Like Ricoeur, Shaw and King are dialecticians, and their dialectics are Ricoeurian not only in form but also in substance. Both launched parallel critiques against the imperialist capitalist ideology they confronted in their respective countries during a time of war and also offered congruent utopian correctives to counter the grave danger presented by a predatory capitalism that elevates plutocratic materialism over ecumenical spiritually. In sum, the article maintains that, together, the artist, the preacher, and the sage hold the keys to a Jesusian kingdom of heaven on earth.
Man and Roboman, or The Secret Co-Author of Man and Superman
Authors: Dietrich Richard Farr
Published: May 2021

This article examines a contradiction to the main story line of Man and Superman that derives from the presence in the play of John Tanner's chauffeur Henry Straker. As driver and fixer of a robot, an automobile, and graduate of a polytechnic school, Straker as a kind of “Roboman” represents the science and engineering prowess of humankind that has already thoroughly mechanized the planet and that threatens humankind with an increasing automation in all phases of life, potentially capped off by a world overrun with advanced robots. This possibility raises the question of whether the organic evolution from “man” to “superman” that is central to the philosophy of Man and Superman may find competition from an inorganic, Engineered Evolution that may follow from Homo sapiens inadvertently replacing itself with something superior to the projected “superman” in the form of highly sophisticated android robots that could “pass” as humans.
Revised Postglacial Sea-Level Rise and Meltwater Pulses from Barbados
Authors: Blanchon Paul , Medina-Valmaseda Alexis , Hibbert Fiona D.
Published: May 2021

Reconstructions of postglacial sea-level rise have provided key insight into the rapid disintegration of ice-sheets and the discharge of large meltwater pulses during the last deglaciation. The most complete reconstruction is from Barbados where thick, backstepping sequences of the reef-crest coral Acropora palmata have been recovered in cores from the insular shelf and slope off the Island’s south coast. Differences in the depth, timing, and magnitude of meltwater pulses between the Barbados reconstruction and other reefal records, however, has led to significant uncertainty in their origin, and the consequent timing of ice-sheet collapse. Here we re-analyse the published sedimentary, stratigraphic, and chronological data from Barbados, and find evidence for ex-situ data which indicates that reefal sequences contain coral clasts generated during hurricanes. By adjusting for biases caused by these ex-situ data, we provide a revised sea-level reconstruction which shows that MWP-1b was an 8–11 m rise from –53 m in ~250 years starting at 11.3 ka, which is 5 m smaller, and 150 years younger than previous estimates. It also shows that the onset of MWP-1a cannot be determined at Barbados because the downslope core sequences are not reef-crest deposits due to their association with deeper coral assemblages and lack of depositional relief. The end of this meltwater pulse can however be determined from the upslope reef, and occurred at a similar time and depth to that documented from Tahiti.
A Study of Anecdotal Student Response to Virtual Art Museums in Online History Courses
Authors: Attwood Adam
Published: May 2021

This anecdotal pilot case study of practice addresses the question: How can technology be used to make online history courses more engaging with museums? Findings from this case study suggest that virtual art museums via the Google Cultural Institute (now Google Arts & Culture) were an effective way to encourage students to do more than the minimum required for the online forum response assignment in a survey (100-level) history course at a community college in the northwest United States. The instructor designed an assignment that was posted in the learning management system as a PDF. Implications for practice are that online instructors of history, as well as online instructors of humanities, can assign virtual art museum visits with an online discussion component to encourage student engagement centered on course content.
Creating Online Instruction that is Accessible, Usable, and Inclusive
Authors: Burgstahler Sheryl
Published: May 2021

As a consequence of the COVID19 pandemic, we have witnessed a swift movement of onsite and hybrid courses to fully online formats. This development has created an urgent need for the design and delivery of online content and engagement mechanisms that are equitable for all students. There is little evidence that many of these courses are accessible to, usable by, and inclusive of students with disabilities. The author of this article discusses challenges students with disabilities face in accessing online content and engaging in online activities as well as choices that instructors and online course designers can make with respect to pedagogy and information technology (IT) to ensure that their classes are accessible to, usable by, and inclusive of all students. She introduces for those new to this field the potential of the universal design (UD) framework to inform the design of online learning that addresses the needs of students with a wide range of characteristics.
Water Retention and Saturation Degree of Peat Soil in Sebangau Catchment Area, Central Kalimantan
Authors: Sajarwan Akhmat , Jaya Adi , Banuwa Irwan Sukri
Published: May 2021

Water is an essential factor in forming, utilization, management, and sustainability of peat soil. This study was to obtain characteristics of water retention and porosity of peat soil. Peat samples were taken from the Natural Laboratory of Peat Forest, Central Kalimantan at shallow, medium, and deep peat at 0-50cm (surface) and 50-100 cm (subsurface), while laboratory analyses carried out at Soil Laboratory, Universitas Gajahmada. The result shows that volumetric moisture content at the surface lower than subsurface, except for deep peat. The total pore for the surface was 84.67-86.98%, while subsurface layers were 83.53-86.93%. For surface layer, saturated degree (S) medium peat higher than shallow and deep peat, while for shallow subsurface peat higher than medium and deep peat. S value all pF levels of surface for medium and deep peat higher than the subsurface. Bulk density for surface was 0.094g.cm-3 (rb(wet)) and 0.22g.cm-3(rb (dry)) for shallow peat while medium peat are 0.084–0.087g.cm-3(rb(wet)) and 0.18–0.20g.cm-3(rb(dry)), deep peat 0.064–0.090g.cm-3(rb(wet)) and 0.11–0.16g.cm-3(rb(dry)). For subsurface, bulk density of medium peat are 0.094–0.107g.cm-3 (rb(wet)) and 0.16–0.20g.cm-3 (rb(dry)), deep peat are 0.067–0.090g.cm-3 (rb(wet)) and 0.10–0.17g.cm-3 (rb(wet)). The particle density of surface and subsurface for shallow peat higher than medium and deep peat, with values 0.67-0.77g.cm3, 0.61-0.66g.cm3, and 0.53-0.63g.cm3 for shallow, medium, and deep peat, respectively. Total pores for the surface layer decrease with increasing dry bulk density (R = 0.624) and particle density (R = 0.375). This fact seems to confirm a directly proportional relationship between parameters bulk and particle density with total pores.
An Evaluation of MODIS Global Evapotranspiration Product as Satellite-Based Evapotranspiration Data for Supporting Precision Agriculture in West Papua - Indonesia
Authors: Faisol Arif , Indarto Indarto , Novita Elida , Budiyono Budiyono
Published: May 2021

Precision Agriculture has been a significant issue since the middle of the 1980s. Evapotranspiration is one of the main parameters in precision agriculture to analyze real water needs in the agriculture area and managing water resources. Traditionally evapotranspiration estimates by directly measured methods, i.e., lysimeter, pan-evaporation, eddy covariance, Bowen ratio, soil water, and climate data analysis. These methods are expensive techniques with low spatial representativeness. The utilization of remote sensing technology is expected to be an alternative solution for providing evapotranspiration data with a cost-effective and high spatial representative. This research aims to evaluate the MODIS global evapotranspiration as satellite-based evapotranspiration in estimating evapotranspiration in West Papua. Four (4) statistical parameters, i.e., mean error (ME), root means square error (RMSE), relative bias (RB), and mean bias factor (MBF), are using for evaluation. The research showed that MODIS global evapotranspiration was overestimated in estimating evapotranspiration in West Papua. However, MODIS global evapotranspiration has an acceptable accuracy in estimating evapotranspiration in West Papua indicated by ME = 0.66 mm/day, RMSE = 0.94 mm/day, RB = 0.27, and MBF = 0.81. Therefore, MODIS global evapotranspiration can be used as an alternative solution for providing evapotranspiration data in West Papua with a cost-effective.
Academic Literacy for Deaf Postsecondary Students through Integrated Reading and Writing Instruction
Authors: Livingston Sue
Published: May 2021

Based on theoretical findings from the literature on the integration of reading and writing pedagogies used with hearing postsecondary students to advance academic literacy, this article offers a model of instruction for achieving academic literacy in developmental and freshman composition courses composed of deaf students. Academic literacy is viewed as the product of acts of composing in reading and writing which best transpire through reciprocal rather than separate reading and writing activities. Pedagogical practices based on theoretical findings and teacher experience are presented as a model of instruction, exemplified as artifacts in online supplementary materials and juxtaposed with practices used with hearing students. Differences between the practices are seen in accommodations for students who learn visually, the amount of guidance provided and more opportunities for extensive practice.
Anaesthetic management in neurological disorders: is combined spinal-epidural a suitable option? Case report
Authors: Rodríguez Alcalá Cristina , Brogly Nicolas , Díez-Picazo Luis Díaz , Guasch Arévalo Emilia , Gilsanz Rodríguez Fernando
Published: May 2021

Tuberous sclerosis (TSC) is a rare disease with multi-systemic involvement, predominantly neurological. Little evidence exists about the anesthetic management of patients with this disorder, particularly in pregnant women. This article discusses a case of a patient with TSC admitted to our hospital for the delivery of a twin gestation. Twenty-four hours after surgery, the patient presented left-side facial-brachial hypoesthesia and headache. A brain CT revealed a right frontal cortical bleeding tumor, which was diagnosed as glioblastoma multiforme. The patient was discharged 15 days after admission and a neurosurgical approach was suggested.
Intravenous lidocaine infusion for the treatment of acute pain in the pediatric intensive care unit: case series
Authors: Izquierdo Ledys M. , Moreno Nathali , Ruiz Sebastián
Published: May 2021

Introduction: The use of intravenous lidocaine infusion has increased over the past decade as part of a multimodal approach to analgesia in adults; however, information about its safety and tolerability in the pediatric population is limited.

Methods: Acute pain management using lidocaine infusion in eleven patients treated in the pediatric intensive care unit.

Results: Five cases of postoperative abdominal pain and six cases of non-operative abdominal pain. Two cases were cancer patients affected by neutropenic colitis. Analgesic control achieved was good.

Conclusion: Lidocaine infusions are apparently a safe option for the management of acute pain, either post-operative or not, in the pediatric population.
Effect of Participation in Development Initiatives on Competitive Advantages, Performance, and Sustainability of Micro-Enterprises in Malaysia
Authors: Al Mamun Abdullah , Muniady Rajennd , Binti Md Nasir Noorul Azwin
Published: May 2021

This study assessed the impact of micro-enterprise development initiatives (commonly provide access to financial services and micro-enterprise development training programs to low-income households) upon competitive advantages, performance, and sustainability of micro-enterprises owned and managed by selected low-income households in Peninsular Malaysia. Upon the adoption of cross-sectional design, data were randomly gathered from 300 micro-entrepreneurs residing in four states of Peninsular Malaysia selected from the eKasih database (national poverty data bank). The quantitative data had been collected by holding structured interview sessions with the participants from October until November 2017. The study outcomes revealed that the total amount of economic loan received, the total number of training hours and the number of center meetings/discussion attended exerted significantly positive effects upon competitive advantage, while marital status (control variable) was found to affect competitive advantage in a significantly positive manner. As for micro-enterprise performance, length of participation and number of center meetings/discussions attended as well as marital status as the control variable exhibited significantly positive effects. Meanwhile, the impact of participation duration, total amount of economic loan received, and number of center meetings/discussions attended upon micro-enterprise sustainability seemed to be inconclusive. Additionally, age of entrepreneurs and duration of enterprises establishment (micro-enterprise established) appeared to affect the aspect of sustainability. The findings appear to emphasize on the mixed effects of participation in development initiatives on competitive advantage, performance, and sustainability of micro-enterprises. Hence, this study recommends that the government of Malaysia formulate and adopt more specific strategies and policies in advocating development initiatives to ensure positive progression amongst micro-entrepreneurs and micro-enterprise owners.
Failed Attempt to Break Up the Oligopoly in Sovereign Credit Rating Market after Financial Crises
Authors: Malewska Alicja
Published: May 2021

For decades, the credit rating market has been dominated by three major agencies (Moody's, S&P and Fitch Ratings). Their oligopolistic dominance is especially strong in sovereign credit ratings industry, where they hold a collective global share of more than 99%. Global financial crisis and the Eurozone sovereign debt crisis exposed serious flaws in rating process and forced public authorities to act. This study investigates effectiveness of new regulations adopted in the United States and in the European Union after financial crises in terms of reducing oligopolistic dominance of the “Big Three” in sovereign credit ratings market. The study applies descriptive statistical analysis of economic indicators describing concentration rate in a market, as well as content analysis of legal acts and case study methodology. Analysis shows that the Dodd-Frank reform and new European rules on supervision of credit rating agencies were not effective enough and did not lead to the increased competition in the market. The evidence from this study is explained using two alternative perspectives – economic theory of natural oligopoly and hegemonic stability theory coming from international relations field.
Population and Labor Dynamics in Large Informal Markets: Implications for Pension Systems with Evidence from Ecuador
Authors: Velín-Fárez Margarita
Published: May 2021

This paper reviews Ecuador’s population structure and labor market dynamics with a focus on the causes of inequality, particularly among older adults receiving contributory pensions. This serves as a basis for characterizing the main restrictions that the Ecuadorian pension system must address. This analysis is valuable for three key reasons. First, the population structure of many less developed countries is converging toward that of developed countries, with older age groups increasing in proportion. Second, Ecuador is among the countries in Latin America and the Caribbean with the highest degree of informality in the labor market, which lowers the coverage of contributory pension schemes. Third, regarding gender inequality, the rate of women’s labor participation in 2010 was among the lowest in South America. The findings suggest that a younger population structure will not be the main solution to financial problems and the pension inadequacy that are facing most pension systems worldwide. Improvements in labor market institutions are required to increase the pension system’s insurance. The study concludes by discussing several proposals aimed at increasing pension coverage and reducing inequality.
Forseti: Extração de características e classiﬁcação de binários ELF
Authors: Galante Lucas , Botacin Marcus , Grégio André , De Geus Paulo
Published: May 2021

A infecção por códigos maliciosos é uma ameaça constante a múltiplas plataformas computacionais e a classiﬁcação de binários utilizando-se de técnicas de aprendizado de máquina tem se mostrado como uma promissora forma de combater tais infecções. Atualmente, a maioria das soluções deste tipo é focada somente na plataforma Windows. De modo a suprir esta lacuna de desenvolvimento, apresentamos Forseti, uma solução de extração de características e classiﬁcação de binários ELF para a plataforma Linux.
An investigation of genetic algorithm-based feature selection techniques applied to keystroke dynamics biometrics
Authors: Do Nascimento Tuany Mariah , De Oliveira Andrelyne Vitória , Abreu Márjory , Santana Laura Emmanuella
Published: May 2021

Due to the continuous use of social networks, users can be vulnerable to online situations such as paedophilia treats. One of the ways to do the investigation of an alleged pedophile is to verify the legitimacy of the genre that it claims. One possible technique to adopt is keystroke dynamics analysis. However, this technique can extract many attributes, causing a negative impact on the accuracy of the classiﬁer due to the presence of redundant and irrelevant attributes. Thus, this work using the wrapper approach in features selection using genetic algorithms and as KNN, SVM and Naive Bayes classiﬁers. Bringing as best result the SVM classiﬁer with 90% accuracy, identifying what is most suitable for both bases.
Algoritmos de Assinatura Digital Baseada em Reticulados Candidatos a Padrão Pós-Quântico
Authors: Belarmino Guilherme , Goya Denise
Published: May 2021

Avanços na construção de computadores quânticos e o fato de vários dos atuais padrões criptográﬁcos serem inseguros na presença de um eventual computador quântico de maior porte levaram o NIST a promover um concurso de padronização de algoritmos pós-quânticos, caracterizados pela segurança em computadores convencionais e quânticos. Neste trabalho são comparados esquemas de assinatura digital baseada em reticulados que participam da segunda fase do concurso, com base nas propriedades, segurança e desempenho dos algoritmos.
Módulo de Autenticação via Eduroam para o Pluggable Authentication Modules
Authors: De Lima Marcos Laerte , Campos Pedro Henrique , Matias Paulo
Published: May 2021

Universidades e instituições de pesquisa frequentemente desejam oferecer serviços para colaboradores externos e visitantes. Federações são uma das formas mais consagradas de atingir esse objetivo. Eduroam é uma rede federada que facilita a itinerância no acesso à internet entre instituições participantes. No entanto, o acesso geralmente se dá por meio de dispositivo pessoal do usuário sendo que, até então, não existia método simples para conﬁgurar um terminal público ou computador de sala de aula para ser acessado com as credenciais da própria rede Eduroam. Este trabalho apresenta uma solução inovadora e comprovada em produção para aceitar as credenciais do Eduroam em sistemas compatíveis com o Pluggable Authentication Modules (PAM).
PEP4Django A Policy Enforcement Point for Python Web Applications
Authors: Da Silva Carlos Eduardo , De Medeiros Welkson , Sampaio Silvio
Published: May 2021

Traditionally, access control mechanisms have been hard-coded into application components. Such approach is error-prone, mixing business logic with access control concerns, and affecting the ﬂexibility of security policies, as is the case with IFRN SUAP Django-based system. The externalization of access control rules allows their decoupling from business logic, through the use of authorization servers where access control policies are stored and queried for computing access decisions. In this context, this paper presents an approach that allows a Django Web application to delegate access control decisions to an external authorization server. The approach has been integrated into an enterprise level system, which has been used for experimentation. The results obtained indicate a negligible overhead, while allowing the modiﬁcation of access control policies without interrupting the system.
Provendo uma Rede Sem Fio de Grande Escala para Visitantes com Auditoria e com Identidade Veriﬁcável
Authors: Mattos Diogo , Magalhães Luiz Claudio
Published: May 2021

A rede sem ﬁo institucional da Universidade Federal Fluminense (UFF) é federada à rede educacional internacional Eduroam. No entanto, diariamente, por volta de 200 usuários não cadastrados visitam a rede. Atender a esses usuários e prover auditoria sobre o uso da rede é um desaﬁo. Esta palestra apresenta a proposta de gestão da identidade de visitantes na rede sem ﬁo da UFF. A ideia central é vincular a identidade de cada usuário a um número de telefone celular veriﬁcável e registrado perante a operadora.
Gestão de Identidades em Redes de Automação de Subestações
Authors: Lopes Yona , Fernandes Natalia , Saade Débora
Published: May 2021

Este trabalho discute a segurança e gestão de identidade em redes de comunicação em subestações elétricas. Apesar de ser um tema de grande criticidade, ele foi negligenciado durante um longo período, resultando em ataques recentes de grande severidade. Trata-se de um tema complexo com várias oportunidades para pesquisa, pois explora característica de um sistema que foi concebido isolado e que agora converge com a tecnologia da informação.
Desaﬁos e Soluções em Sistemas de Votação Eletrônica: Um Mapeamento Sistemático
Authors: Pegorini Jéssica , Yada Natália , Souza Alinne , Pagno Rodrigo , Will Newton
Published: May 2021

Resumo. em algumas vantagens, como a rápida apuração dos votos e disponibilidade dos resultados, mas também há problemas tecnológicos a serem tratados para evitar fraudes e falhas no sistema, garantindo um processo íntegro. O presente trabalho apresenta um mapeamento sistemático realizado na área da segurança eleitoral, que busca as principais informações sobre os protocolos utilizados em sistemas de votação eletrônica, as medidas de segurança utilizadas e também as vulnerabilidades e falhas detectadas nesses sistemas. Os resultados apontam uma convergência dos estudos a determinados protocolos e medidas de segurança, além dos principais problemas a serem enfrentados nessa área.
Esquema de votação seguro e transparente através de encriptação homomórﬁca
Authors: De Araújo Pedro Vinicius , Batista Jr Antônio , Gazziro Mario
Published: May 2021

A democracia depende em uma parcela grande da conﬁança dos eleitores na integridade do processo de escolha de seus representantes. Consequentemente, esquemas de votação precisam ser transparentes e ainda garantir o sigilo do voto a ﬁm de garantir a integridade de uma eleição. Neste artigo, propomos um esquema de votação usando encriptação homomórﬁca e esquemas de comprometimento. O sistema garante não só a privacidade do voto dos eleitores, mas também permite que eles auditem o resultado da eleição. Os resultados experimentais mostram que o sistema tem bom desempenho para eleições com pequeno número de eleitores.
Credenciais de Votação baseadas em BIP para Protocolos de Votação Resistentes à Coerção
Authors: De Sá Matheus , Araújo Roberto
Published: May 2021

Protocolos de votação resistentes à coerção dependem de credenciais para deterem ataques coercivos. Para isso, cada votante recebe uma credencial para votar e deve gerar credenciais falsas ao ser coagido. As credenciais, no entanto, são números grandes de difícil memorização. Isso diﬁculta a utilização desses protocolos em cenários práticos de votação. De forma a facilitar o emprego dessas credenciais, esse trabalho investiga a utilização do BIP-39 como base para credenciais mais práticas.
Detection of Phylogenetic Groups and Drug Resistance Genes of Escherichia coli Causing Urinary Tract Infection in Southwest Iran
Authors: Boroumand Mostafa , Naghmachi Mohsen , Ghatee Mohammad Amin
Published: May 2021

Background: Many bacteria can cause urinary tract infections (UTIs), among which Escherichia coli is the most common causative agent. Escherichia coli strains are divided into eight phylogenetic groups based on the new Quadroplex-PCR method, which are different in terms of patterns of resistance to antibiotics, virulence, and environmental characteristics. Objectives: This study aimed to determine the phylogenetic groups and the prevalence of drug resistance genes in E. coli strains causing UTIs. Methods: In this descriptive cross-sectional study, 129 E. coli isolates obtained from the culture of patients with UTIs were evaluated for phylogenetic groups using the new method of Clermont et al. The identification of phylogenetic groups and antibiotic resistance genes was performed using the multiplex polymerase chain reaction (PCR) method. Results: In this study, concerning the distribution of phylogenetic groups among E. coli isolates, the phylogenetic group B2 (36.4%) was the most common phylogenetic group, followed by phylogroups C (13.2%), clade I (10.1%), D (9.3%), and A (3.1%) while groups B1 and F were not observed in any of the isolates, and 20.2% had an unknown state. Also, out of 129 E. coli isolates, the total frequency of tetA, tetB, sul1, sul2, CITM, DfrA, and qnr resistance genes was 59.7%, 66.7, 69, 62, 30.2, 23.3, and 20.2%, respectively. In this study, there was a significant relationship between antibiotics (P = 0.026), cefotaxime (P = 0.003), and nalidixic acid (P = 0.044) and E. coli phylogenetic groups. No significant relationship was observed between E. coli phylogenetic groups and antibiotic resistance genes. Conclusions: The results of this study showed that strains belonging to group B2 had the highest prevalence among other phylogroups, and also, the frequency of antibiotic resistance genes and drug-resistant isolates had a higher prevalence in this phylogroup. These results show that phylogroup B2 has a more effective role in causing urinary tract infections compared to other phylogroups, and this phylogroup can be considered a genetic reservoir of antibiotic resistance.
Construction of PX-LmGP63 Using CRISPR-Cas9 as Primary Goal for GP63 gene Knockout in Leishmania major and Leishmanization
Authors: Ebrahimi Saeedeh , Alipour Hamzeh , Azizi Kourosh , Kalantari Mohsen
Published: May 2021

Background: Leishmania is an intracellular protozoan parasite that uses complex methods for destroying the innate immune response in mammalian host macrophage cells. Many factors have been identified that play a role in the severity of the parasite’s pathogenicity. One of the factors is the GP63, which is a group of metalloproteinases that disrupts the signaling mechanism of the host cell. Objectives: The aim of this study was to construct PX-LMGP63 vector through CRISPR-Cas9 for GP63 gene knockout in Leishmania major as a potential method for leishmanization. Methods: A pair of gRNAs were designed based on the mRNA sequence of the GP63. Then annealing primers were cloned into the linearized vector PX-459 and transformed into the DH5ɑ competent cells. Then, PCR assay was performed with gene-specific and vector primers to confirm the colonies. In addition, the constructed plasmid was sequenced for final confirmation. Results: The expected size band of 270 was confirmed by PCR. The plasmid sequence showed that the gRNA789 was ligated in the vector. The created structure was named PX-LMGP63 and will be transfected into the promastigote cell in the next step. Conclusions: Owing to the prevalence of cutaneous Leishman as a public health problem in most countries and the lack of an effective vaccine for leishmaniasis, the use of the CRISPR method may make it possible to achieve an effective vaccine in the future.
Performance analysis of waterjet propulsion on an unmanned surface vehicle model
Authors: Arif Budiyanto , Ayuningtyas Hamnah
Published: May 2021

Waterjet propulsion on an unmanned surface vehicle is a propulsion system with the working principle of taking water from the bottom of the hull into a turbine to be blown out the back, converted into the ship's thrust. The resulting thrust depends on the available water forces. The water spray in the nozzle is generated from an inlet at the bottom of the ship, which is assisted by a pump on the waterjet. In the inlet section, this will affect the distribution of flow that passes through the pump and out through the nozzle. The purpose of this study was to analyze the inlet passage of the jet of water, which is variable, with the inlet velocity ratio (IVR) to determine the maximum efficiency value of the waterjet propulsion system. The work of this study used the computational fluid dynamics (CFD) method and analytical calculations. The inlet velocity ratio was varied with values of 0.54, 0.59, 0.67, 0.78, 0.94, 1.18, 1.64, and 2.38. The results of the analysis included the volume that exited the waterjet outlet and the thrust value under different conditions. The highest thrust value obtained was based on an IVR value of 2.38, which also had the maximum efficiency value of 98%.
Jóvenes huérfanos en el Maestrazgo medieval. Aproximación a su vida a través de los documentos de tutela.
Authors: Aparici Martí Joaquín , Villanueva Morte Concepción
Published: May 2021

Resumen: La infancia y la adolescencia suponen un período vital en la formación de la personalidad del individuo. Si ese período ya puede resultar duro y traumático según determinadas épocas, aún lo puede ser más si los actores del proceso son huérfanos. Presentamos aquí una contextualización sobre la vida de los huérfanos del territorio castellonense del Maestrazgo de Montesa durante la Edad Media. Para ello utilizamos los registros notariales conservados en la zona. De toda la documentación consultada hacemos especial mención a las tutelas porque ofrecen datos indiciarios sobre cómo se desarrolló la vida de esos jóvenes hasta alcanzar la mayoría de edad legal.Abstract: Childhood and adolescence represent a vital period in the formation of the individual's personality. If that period can already be hard and traumatic according to certain times, it can be even more so if the actors in the process are orphans. We present here a contextualization about the life of the orphans of the Maestrazgo de Montesa in Castellon during the Middle Ages. For this we use the notarial records kept in the area. Of all the documentation consulted, we make special mention of the guardianships because they offer indicative data on how the life of these young people developed until they reached the legal age of majority.
La poesía infantil a propósito de un libro de Concepción Ortega Casado
Authors: Cruz Giráldez Miguel
Published: May 2021

Reseña de la obra / Book Review:: Ortega Casado, Concepción (2020). La cometa indiscreta. Sevilla: En Huida, 78 págs.
Samarbejde i skolen: En empirisk undersøgelse af, hvordan samarbejde tematiseres i kommunikationen i et kommunalt dansk skolesystem med fokus på, om og hvordan samarbejde bidrager til kobling mellem professionelles praksis og elevers læring
Authors:   , Krøger Anne
Published: May 2021

Afhandlingen præsenterer en kvalitativ empirisk undersøgelse af samarbejde i skolen. Det undersøges, hvordan samarbejde tematiseres i kommunikationen i et kommunalt dansk skolesystem med fokus på, om og hvordan samarbejde bidrager til kobling mellem professionelles praksis og elevers læring. Undersøgelsen inkluderer data fra 6 policy-dokumenter og 18 kvalitative forskningsinterviews, hvor forvalt ningschefer og -medarbejdere, skoleledere og lærere deltager. Afhandlingen konkluderer, at samarbejde bidrager til kobling mellem de professionelles praksis og elevers læring, når skoleledelse, ressourcepersoner og lærere sikres tilkoblingsmuligheder, ligesom både forvaltning, skoleledelse, ressourcepersoner og lærere bør garantere tilkoblingsduelighed i forhold ti organisationens dagsorden. Endvidere konkluderer jeg, at alle initiativer skal tilpasses, hvis intentionerne med dem skal opfyldes, og ethvert initiativ skal kobles til den praksis, som i forvejen kendetegner skolen. Det gælder endvidere, at samarbejde mellem forvaltning og skole, men også det indbyrdes samarbejde mellem skoleledelse, ressourcepersoner og lærere, med fordel kan initieres og formaliseres, hvis det skal bidrage til kobling mellem de professionelles praksis og elevers læring.
Efficacy of Virtual Reality Based Worry Exposure Therapy on the Anxiety Severity and Worry in Generalized Anxiety Disorder
Authors: Keshavarz Neda , Hashemi Nosrat Abad Touraj , Beyrami Mansour , Mahmoud alilou Majid , Bakhshipour Roudsari Abbas
Published: May 2021

Background: Generalized anxiety disorder is one of the most common anxiety disorders observed in clinical centers and the general population. This study aimed to evaluate the efficacy of virtual reality-based worry exposure therapy on the Anxiety Severity and worry in patients with symptoms of generalized anxiety disorder. Materials and Methods: This study was conducted in the framework of a single-subject experimental design using Multiple baselines with a 6-week follow-up. Three women with GAD were selected through a structured clinical interview based on the criteria of Diagnostic and Statistical Manual of Mental Disorders 5 by Convenience Sampling among those who referred to the Counseling centers in Tabriz. The protocol of this study followed the manual by Becker and Margraf which describes imaginal exposure for GAD applied in 15 sessions. The only difference was that in this research exposure to virtual reality replaced with imagination. In this study, three 360-degree films were made by the researcher used for exposure. The content made in the form of 360-degree videos and displayed to patients through virtual reality tools. The scales to assess changes in Anxiety Severity and worry include The Penn State Worry Questionnaire and The Overall Anxiety Severity and Impairment Scale. Data analyzed with visuals inspection, improvement percentage, and reliable change index strategies. Results: Results showed that virtual reality-based worry exposure therapy has significant efficiency on the reduction of Anxiety Severity and worry clinically and statistically (p<0.05). Conclusion: Virtual reality-based worry exposure therapy has appropriate efficacy in reducing GAD symptom severity.
Expression of p16 and Galectin3 in Squamous Cell Carcinoma of Uterine Cervix, in Relation to the Histomorphological Variants: A Cross-sectional Analysis
Authors: Hota Sarbashis , Das Tushar Kanti
Published: May 2021

Introduction: Cancer of uterine cervix comprises a big chunk of cancer registration worldwide. Now-a-days the immunohistochemical marker p16 has emerged as the surrogate marker of high risk Human Papilloma Virus (HPV) infection in cervical tissue. Galectin3, a ubiquitous agent likely to modulate different pro-survival properties necessary for neoplastic cells, is recently emerging as the guardian of tumour microenvironment. Aim: To study the expression of p16 and galectin3 in different histomorphological variants of cervical Squamous Cell Carcinoma (SCC) and their association with grade and stage. Materials and Methods: An observational cross-sectional study was undertaken in the Department of Pathology in a tertiary care hospital in East India, from January, 2019 to June, 2020. Fifty three samples diagnosed as invasive Squamous Cell Carcinoma (SCC) of uterine cervix were taken by systematic random sampling. Immunohistochemical examination was done using monoclonal antibodies against p16 and galectin3 after obtaining thin sections from formalin fixed paraffin embedded blocks and retrieval of antigen. The data was interpreted by light microscopy using a semiquantitative method with respect to prefixed parameters and statistical analysis was done by chi-square test and Fisher’s exact test using SPSS version 25.0. Results: Fifty two out of fifty three cases (98.1%) of squamous cell carcinoma in this study showed almost 100% block posivity of p16 in the tumour cells -strongly corroborative with high risk HPV infection. The non-keratinizing and the basaloid variant showed the strongest intensity of staining (3+). Only one case showed complete negativity of p16 expression. In galectin3 positive cases, strong expression of this marker is found in the invasive tongues of the tumour cells at the junction of tumour stromal interface, consistent with our knowledge regarding the importance of galectin3 in regulating the tumour microenvironment. The strongest galectin3 positivity(3+) was found in the single case of Lymphoepithelioma like squamous cell carcinoma and showed almost 100% positivity among the neoplastic cell population; whereas the non-keratinizing and Basaloid variant showed almost negative expression. Significant association (p=0.00021) found between tumour grade and p16 intensity. Conclusion: The non-keratinizing and basaloid variants of squamous cell carcinoma have shown statistically significant association with highest intensity of p16 staining along with diminished expression of galectin3. Increased tumour grade is also significantly associated with strong staining intensity of p16 and decreased galectin3 expression. However, no significant association is found between galectin3 expression or intensity of p16 expression and the stage of tumour.
ENSINO LIVRE E AULAS NOTURNAS: UMA ANÁLISE SOBRE AS IDEIAS EDUCACIONAIS DE SILVINO ELVÍDIO CARNEIRO DA CUNHA (1870 – 1875)
Authors: Do Nascimento Costa Suenya
Published: May 2021

Este artigo apresenta as ideias de Silvino Elvídio Carneiro da Cunha sobre a instrução pública nas províncias da Parahyba do Norte (1874-1875), Rio Grande do Norte (1870) e de Alagoas (1872). O objetivo é de compreender o modo como as temáticas da instrução foram apresentadas nos relatórios provinciais e identificar os seus projetos políticos em torno da necessidade de incentivar a instrução como o meio de solucionar as questões de civilidade e os ideais de modernidade que permeavam o século XIX. Portanto, a criação de aulas noturnas no governo de Carneiro da Cunha, pensando a escolarização para uma camada específica da sociedade e a defesa do ensino livre, era encarada através de certa compreensão de sociedade e de homem novos, que eram necessários emergir, pautados em princípios liberais.
INCLUSÃO DIGITAL: UM ESTUDO DE CASO NAS ESCOLAS DO SERTÃO PERNAMBUCANO
Authors: Silva Neto Sebastião Luiz da , Silva Bruna Rafaela Ferreira da , Leite Bruno Silva
Published: May 2021

A inclusão digital é considerada como o processo que possibilita a democratização do acesso às tecnologias digitais, de forma a permitir a inserção de todos na sociedade da informação. Este trabalho tem como objetivo identificar as concepções dos professores das escolas públicas de uma cidade no sertão pernambucano sobre a inclusão digital. Para isso, realizamos uma entrevista semiestruturada com 45 participantes e analisamos os dados por meio da análise de conteúdo. Os resultados mostram que a falta de políticas públicas, infraestrutura e capacitação são obstáculos para uma inclusão digital nas escolas. Além disso, a falta de cursos de formação (inicial e continuada) que contemplem tecnologias digitais no ensino contribuem para o distanciamento de práticas inclusivas.
SOCIOMATERIALIDADE E TEORIA ATOR-REDE NA EDUCAÇÃO
Authors: Silva Patrícia , Pretto Nelson
Published: May 2021

O objetivo desse artigo teórico é sugerir uma outra leitura aos estudos humanistas na Educação. Começa com o foco na materialidade e é alimentado pela observação de que os seres humanos não são/estão totalmente no controle das práticas educacionais, mas apoiada pela suposição de que os objetos/coisas também participam e contribuem para a formação delas. As agendas em Educação carecem de uma metodologia que não inicie apenas com os seres humanos, seus objetivos e seus interesses e quando trabalhamos a sociomaterialidade e, consequentemnete, a Teoria Ator-Rede (ANT), é para destacar as maneiras pelas quais a matéria pode ser concebida como mais do que apenas uma superfície passiva na qual os significados culturais são registrados. É importante que nós educadores reexaminemos a justiça social a partir de uma perspectiva humana descentralizada.
Mango Peel and Almond Flour (Mangifera indica var Amelie,Kent, Keitt, Brooks) harvested, Processed in North of Cote d’Ivoire: Biochemical Parameters and Mineral Content
Authors: Diomande Mabintou , Konan Kouassi Hubert , Monnet Yapo Thierry , Gbotognon Jaures Oscar , Kanga Kouassi Armand , Kouadio Eugène Jean Parfait , Kouamé Lucien Patrice
Published: May 2021

Mango almond and peel flours are a potential source of nutriment. In this study, the proximate composition and mineral element profile of four varieties of mango flour that are grown and processing in north of Cote d’Ivoire investigated. The data can be used as a reference when these flours are used for further processing in a variety of products. The peels and almonds were harvested fresh, dried in an oven at 50°C for 72 hours, ground and analysed according to standard procedures. Results showed carbohydrate, crude protein, total lipid, crude fibre, ash contents and vitamin C of the couple “peel – almond” flours were found to be 83.83-76.16%, 2.48-6.54%, 2.79-13.45%, 9.97-7.67%, 4.25-3.10% and a considerable amount of vitamin C of 307.67–304.85 mg/100g, respectively. They also contained important minerals such as calcium at 1204.45-1064.82 mg/100g, magnesium at 257.46-243.81 mg/100g, and potassium was the major at 1883.65-1617.66 mg/100g, regarding peels and almonds flours, respectively. Mangoes varieties such as Amelie, Kent, Keitt and Brooks have the potential to be a good source of nutrition for humans and animals. Mangoes varieties, peels, almonds, biochemical parameters, minerals.
Haematological Profile of Oreochromis Niloticus (Burchell, 1822) Exposed to Cadmium Chloride
Authors: Isiyaku M. S. , Mohammed R.
Published: May 2021

Changes in Oreochromis niloticus blood cells were investigated after 96-h of exposure to cadmium chloride. One hundred and eighty (180) Oreochromis niloticus with average weight of 26.07±1.23g and mean length of 17.50 + 0.50cm were divided into 5 groups (T1-T5) at ten (10) fish per group and in triplicates after being acclimatized for 14 days. They were then exposed to various concentrations (0, 28, 30, 32, 34 and 36 mg/l) of cadmium chloride. The packed cell volume (PCV) of the treatments decreased significantly relative to that of the control, while their platelet counts increased compared with the control. There was also a reduction in the RBC (2.70, 2.51, 2.24, 1.98, 1.64 and 1.22) of treatments. Other blood parameters did not vary significantly in comparison with the control group, but it is worth noting that, the mean corpuscular volume (MCV) (70.78, 76.09, 83.71, 90.55, 105.49 and 128.68fL), mean corpuscular haemoglobin (MCH) (24.66, 24.49, 27.37, 29.83, 33.14 and 42.18pg) and mean corpuscular haemoglobinconcentration (MCHC) (34.83, 32.19, 32.71, 32.95, 34.41 and 34.78%) increased considerably in all treatments compared to the control. These alterations have been attributed to direct or feedback responses of structural damage to RBC membranes resulting in haemolysis and impairment inhaemoglobin synthesis, stress related release of RBCs from the spleen and hypoxia, which was induced by exposure to cadmium chloride. This study therefore gives an insight into toxic effect of cadmium chloride on fish.
Exploration of D-, A-, I- and G- Optimality Criteria in Mixture Modeling
Authors: Wanyonyi Samson W. , Okango Ayubu A. , Koech Julius K.
Published: May 2021

A design optimality criterion, such as D-, A-, I-, and G- optimality criteria, is often used to analyze, evaluate and compare different designs options in mixture modeling test. A mixture test is an experiment where the descriptive variable and response rely only on the mixture's relative ratio in the mix but not its composition. The study geared toward exploring D-, A-, I-, and G- optimality criteria and their efficiency in determining an optimal split-plot design in mixture modeling within the presences of process variables. We evaluated and discussed in detail D-, A-, I-, and G- optimality criteria based on literature review. We also explored and examine why I- and D-optimal criteria are often involved within the formulation of an optimal design in the context of mixture process variable settings. We recommend that optimality criterion must always be used when assessing the various styles of designs so as to search out a desirable design that matches a combination model.
Physicochemical Characterization and Effect of Thermal Treatments on the Enzymatic Browning Inhibition of Violet Eggplant (Solanum melongena L.) Cultivated in Daloa (Côte d’Ivoire)
Authors: Constant Yapi Jocelyn , Bénédicte Deffan Zranseu Ange , Bedel Fagbohoun Jean , Patrice Kouame Lucien
Published: May 2021

Background: The polyphenol oxidase (PPO) responsible for the enzymatic browning of fruits and vegetables, has been involved in the undesirable brown discolouration of food products that resulted in negative effects on colour, taste, and nutritional value. This is a generally undesired process and needs to be prevented in food technology.

Objective: The present work was carried out to evaluate the effect of chemical and thermal treatments on browning inhibition of eggplant fruit (Solanum melongena L.).

Materials and Methods: A screening of PPOs activities from eggplant was carried out. The physicochemical characteristics and thermal stability of main PPOs activities were determined in order to develop methods of anti-browning.

Results: Dopamine oxidase and pyrocatechol oxidase activities were the most active main eggplant fruit PPO activities. Maximal PPO activity was found at 30°C, pH 7.0 for dopamine and 25°C, pH 6.6 for pyrocatechol. The enzymes were stable and retained almost all of their catalytic activity at their optimum temperature (30 and 25°C) for 120 min and their pH stability was in the range of 5.0 - 7.0. Polyphenol oxidases (dopamine oxidase and pyrocatechol oxidase) remained their full activity in the presence of ion Na+, Cu2+, Pb2+ (1 mM) but were inhibited strongly by the ion Fe2+ and Pb2+ (5 mM). On the other hand, the ion K+, Ba2+ and chemical agents, EDTA, citric acid have virtually no effect on dopamine oxidase and pyrocatechol oxidase activities. Energy for inactivation (Ea) obtained using dopamine and pyrocatechol were 30.8 kJ/mol and 7.1 kJ/mol from respective substrates.

Conclusion: Ascorbic acid was a better inhibitor where 82.32% of PPOs inhibition was achieved. At 65°C, their D-values ranged from 44.72 to 72.72 min. Hence, heat treatment at 65°C for 30 min reduced browning of eggplant fruit. These data regarding the properties of PPO should enhance understanding of the browning reaction in eggplant and lead to the development of techniques for controlling this undesirable process.