bluuebunny/crossref_metadata_2025 huggingface dataset:
NT DINTE 32 - Análise dos Dados Preliminares do Comércio Mundial em 2020
Authors: Ribeiro Fernando
Published: May 2021

Os efeitos econômicos e as incertezas após a irrupção da pandemia de Covid-19 no início de 2020 gerou um rápido movimento de revisão de projeções para o desempenho da economia mundial. O Fundo Monetário Internacional (FMI), por exemplo, reduziu a previsão para o crescimento mundial de 3,3% para -3,0% em abril de 2020 (FMI, 2020a). Não o bastante, no update publicado em junho de 2020, já de posse dos primeiros números de atividade econômica posteriores ao início da pandemia, o FMI reduziu ainda mais a previsão, para 4,9% (FMI, 2020b).
NT DIRUR 23 - Novo Modelo de Contrato de Mobilidade Urbana: Como Gerar Receita, Aumentar Uso e Reduzir Custos de Transporte Público Urbano
Authors: Zaban Breno , Pompermayer Fabiano Mezadre , Carvalho Carlos Henrique Ribeiro de
Published: May 2021

O transporte público é a forma mais eficiente de oferecer mobilidade a baixo custo, impacto ambiental e impacto urbano. Infelizmente, no Brasil, as opções de transporte frequentemente não oferecem níveis de serviço e preço que incentivem a sua adoção por parte significativa da população. Vários estudos mostram uma perda de participação do transporte público coletivo no mercado de deslocamentos urbanos brasileiro, ao mesmo tempo em que ocorre intensificação do uso do transporte individual motorizado (Ipea, 2010; Carvalho et al., 2013; Pereira, 2021).

Essa baixa adesão ao transporte público gera graves consequências para a sociedade. Milhões de horas de trabalho e lazer são perdidas anualmente por pessoas presas no trânsito. Toneladas de carbono são emitidas na atmosfera. Opções de transporte menos seguras, como motos, são frequentemente adotadas como forma de escape do transporte público, com impactos expressivos no aumento de acidentes, lesões e mortes (Ipea, 1998; 2016; Carvalho, 2019).

Esta nota tem por objetivo propor alterações em contratos de concessão de ônibus para aumentar o uso e melhorar a qualidade do serviço. As premissas básicas para a proposta envolvem maior flexibilidade, menores custos, viabilizando novas receitas, maior uso e, ao fim, menores tarifas. Parte-se do reconhecimento das externalidades positivas que o transporte público traz à cidade, inclusive ao transporte individual, mas se rediscute a forma de internalizá-las nos contratos de concessão de ônibus, de forma a buscar-se constantemente maior eficiência em custos e melhor nível de serviço.

A abordagem geral proposta aqui pode ser empregada em novas licitações. Para esses casos, a própria natureza mais flexível do contrato dispensa o custo e o tempo de modelagem detalhada que normalmente atrasa e limita contratos de concessão. Mas também pode ser utilizada em aditivos no âmbito de processos de reequilíbrio econômico financeiro de contratos vigentes. Entende-se que, após os danos causados pela pandemia da Covid-19, contratos de concessão de ônibus terão de passar por significativa reformulação. A proposta desta nota oferece uma avenida de reformatação que privilegia a redução de custos e tarifas, preservando os direitos e as expectativas de retorno legítimas do concessionário.

Espera-se que este texto sirva como orientador para revisão de serviços de transporte público para que brasileiros passem a ver esse tipo de transporte como a melhor solução para suas necessidades cotidianas de mobilidade. Na seção 2, são delineados os princípios fundamentais da proposta, e, nas seções 3, 4, 5, 6 e 7, as diretrizes são apresentadas, sendo que esta última não envolve os contratos de concessão de transporte público em si, mas ações que podem ser tomadas pelas administrações públicas municipais e metropolitanas que potencializarão o alcance das medidas propostas aos contratos. Por fim, a conclusão desta nota é feita na seção 8.
NT DISOC 92 - Comportamento do mercado de trabalho brasileiro em duas recessões: análise do período 2015-2017 e da pandemia de Covid-19
Authors: Corseuil Carlos Henrique , Franca Maíra , Padilha Gabriela , Ramos Lauro , Russo Felipe
Published: May 2021

A partir do segundo trimestre de 2014, o produto interno bruto (PIB) brasileiro passou por onze trimestres consecutivos de crescimento negativo, atingindo seu menor valor no quarto trimestre de 2015, uma queda de 5,5%, e apenas no começo de 2017 passou novamente a apresentar alguma expansão. Em fevereiro de 2020, os primeiros casos do novo coronavírus foram detectados no Brasil e, em março, a Organização Mundial da Saúde (OMS) declarou o quadro de pandemia. As medidas adotadas pelos entes nacionais e entidades privadas para estimular o isolamento social e combater a infecção incluíram restrição de viagens, fechamento de escolas e comércio, restrição a atividades produtivas e, nos casos mais extremos, lockdowns com restrição a movimentação da população. Essas medidas tiveram grande impacto na atividade econômica e, em particular, no mercado de trabalho.

O gráfico 1, que apresenta as variações anuais do PIB trimestral, mostra como a crise do novo coronavírus rapidamente resultou em uma queda da economia agregada em níveis inéditos, inclusive abaixo da recessão anterior.

Este estudo procura analisar os ajustes do mercado de trabalho em meio a essas duas retrações, tentando estabelecer similaridades e diferenças entre os ajustes observados nas crises anterior e mais recente. Para tanto, serão usados diversos indicadores de trabalho, construídos a partir da Pesquisa Nacional por Amostra de Domicílios (PNAD) Contínua, do Instituto Brasileiro de Geografia e Estatística (IBGE), do Cadastro Geral de Empregados e Desempregados (Caged), da Secretaria Especial de Previdência e Trabalho (SEPRT), e da Relação Anual de Informações Sociais (Rais), também produzida por essa secretaria.
USE OF GALERKIN TECHNIQUE TO THE ROLLING OF A PLATE IN DEEP WATER
Authors: Ray Swagata , De Soumen , Mandal B. N.
Published: May 2021

The classical problems of surface water waves produced by small oscillations of a thin vertical plate partially immersed as well as submerged in deep water are reinvestigated here. Each problem is reduced to an integral equation involving horizontal component of velocity across the vertical line outside the plate. The integral equations are solved numerically using Galerkin approximation in terms of simple polynomials multiplied by an appropriate weight function whose form is dictated by the behaviour of the fluid velocity near the edge(s) of the plate. Fairly accurate numerical estimates for the amplitude of the radiated wave at infinity due to rolling and also for swaying of the pate in each case are obtained and these are depicted graphically against the wave number for various cases.
Machine-learning Application to Fermi-LAT Data: Sharpening All-sky Map and Emphasizing Variable Sources
Authors: Sato Shogo , Kataoka Jun , Ito Soichiro , Kotoku Jun’ichi , Taki Masato , Oyama Asuka , Toyoda Takaya , Nakamura Yuki , Yamamoto Marino
Published: May 2021

A novel application of machine-learning (ML) based image processing algorithms is proposed to analyze an all-sky map (ASM) obtained using the Fermi Gamma-ray Space Telescope. An attempt was made to simulate a 1 yr ASM from a short-exposure ASM generated from 1-week observation by applying three ML-based image processing algorithms: dictionary learning, U-net, and Noise2Noise. Although the inference based on ML is less clear compared to standard likelihood analysis, the quality of the ASM was generally improved. In particular, the complicated diffuse emission associated with the galactic plane was successfully reproduced only from 1-week observation data to mimic a ground truth (GT) generated from a 1 yr observation. Such ML algorithms can be implemented relatively easily to provide sharper images without various assumptions of emission models. In contrast, large deviations between simulated ML maps and the GT map were found, which are attributed to the significant temporal variability of blazar-type active galactic nuclei (AGNs) over a year. Thus, the proposed ML methods are viable not only to improve the image quality of an ASM but also to detect variable sources, such as AGNs, algorithmically, i.e., without human bias. Moreover, we argue that this approach is widely applicable to ASMs obtained by various other missions; thus, it has the potential to examine giant structures and transient events, both of which are rarely found in pointing observations.
Deep Observations of CO and Free–Free Emission in Ultraluminous Infrared QSO IRAS F07599+6508
Authors: Tan Qing-Hua , Gao Yu , Daddi Emanuele , Xia Xiao-Yang , Hao Cai-Na , Omont Alain , Kohno Kotaro
Published: May 2021

Infrared quasi-stellar objects (IR QSOs) are a rare subpopulation selected from ultraluminous infrared galaxies (ULIRGs) and have been regarded as promising candidates of ULIRG-to-optical QSO transition objects. Here we present NOEMA observations of the CO (1−0) line and 3 mm continuum emission in IR QSO IRAS F07599+6508 at z = 0.1486, which has many properties in common with Mrk 231. The CO emission is found to be resolved with a major axis of ∼6.1 kpc that is larger than the size of ∼4.0 kpc derived for 3 mm continuum. We identify two faint CO features located at a projected distance of ∼11.4 and 19.1 kpc from the galaxy nucleus, both of which are found to have counterparts in the optical and radio bands and may have a merger origin. A systematic velocity gradient is found in the CO main component, suggesting that the bulk of molecular gas is likely rotationally supported. Based on the radio-to-millimeter spectral energy distribution and IR data, we estimate that about 30% of the flux at 3 mm arises from free–free emission and infer a free–free-derived star formation rate of 77 M
⊙ yr−1, close to the IR estimate corrected for the AGN contribution. We find a high-velocity CO emission feature at the velocity range of about −1300 to −2000 km s−1. Additional deep CO observations are needed to confirm the presence of a possible very high velocity CO extension of the OH outflow in this IR QSO.
Mission et traduction dans l’ordre des Dominicains espagnols au XVIe siècle
Authors: Bueno García Antonio
Published: May 2021

Les missionnaires dominicains qui ont accompagné les conquistadors espagnols en Amérique au XVIe siècle ont dû faire face à une réalité inattendue en raison de l’ignorance des langues et des cultures autochtones. La perception des Indiens, les conflits avec le projet politique et militaire de la couronne espagnole, avec l’Église et même aussi avec d’autres ordres, ont été fort présents dans leur système de prédication. À l’aide de la description des langues indigènes et de la traduction des œuvres catéchétiques, liturgiques, scientifiques, littéraires, artistiques, etc., ils ont réussi l’approche et l’inculturation de ces peuples. Les méthodes de traduction suivies pour l’élaboration de leur œuvre, ainsi que les conséquences de leurs procédés d’évangélisation, font l’objet de ce travail.
Les pseudo-traducteurs et leurs motivations
Authors: Anaïs Bocquet Catherine
Published: May 2021

Les pseudo-traductions sont des textes donnés à lire comme une traduction, alors qu’ils ne dérivent en réalité d’aucun texte original.La question de savoir pourquoi on écrit des pseudo-traductions a longtemps été abordée en termes de relations entre les polysystèmes littéraires, cette mystification permettant notamment d’introduire de façon subreptice, dans la langue-culture-cible, des genres littéraires qui n’y avaient pas jusqu’alors droit de cité.Mais cette pratique scripturaire repose aussi sur des motivations individuelles, et c’est sur cet aspect du phénomène que le présent article entend attirer l’attention. Sont étudiés trois cas de figure choisis pour la diversité des motivations qui ont présidé au choix de produire un texte pseudo-traductif.
Unité de traduction dans l’audiovisuel
Authors: Tomaszkiewicz Teresa
Published: May 2021

Michel Ballard, dans ses nombreuses publications, a évoqué la notion d’unité de traduction. Il a proposé plusieurs classifications, parmi lesquelles : l’unité est le tout, l’unité est l’un des éléments constituants de l’ensemble, l’unité assure la cohésion entre les unités constituantes. Or, cette unité est difficile à délimiter dans le cadre de différents types de textes et de différentes opérations mentales d’un traducteur humain. Michel Ballard a proposé de l’envisager sous la forme d’un schéma d’équivalence entre une forme de départ et une forme d’arrivée, étant entendu que ces éléments ne peuvent se concevoir sans contextualisation. Dans cet article, l’auteure, en s’appuyant sur la théorie de Ballard, se concentre sur la définition de cette unité dans le domaine de la traduction audiovisuelle, où la contextualisation est un facteur fondamental car le sens est construit interactivement par les protagonistes prenant part à des dialogues et parallèlement à l’interrelation entre le verbal et le visuel. L’auteure démontre l’applicabilité du modèle de Ballard à la traduction filmique en en proposant quelques schémas descriptifs.
Wear Characteristics Optimization of Al6061-Sugarcane Bagasse Ash Metal Matrix Composite Using Taguchi Method
Authors: Virkunwar Anwesh K. , Ghosh Shouvik , Basak Ranjan
Published: May 2021

In present work, Aluminium 6061 was reinforced by varying the percentage of sugarcanebagasse ash (SCBA). Al-SCBA composite samples were fabricated by stir casting method. The weartest conducted on the samples using a pin on disc machine under the normal sliding condition. Basedon the testing parameters (Volume fraction ‘V’, Load ‘L’, sliding speed ‘S’) an L27 Orthogonal arraydesign was selected. According to L27 array, the wear & friction test was conducted. variance analysis(ANOVA) was performed to find out the important parameter and contribution in percentage for eachparameter on the composite material. To verify the analysis results with experimented resultconfirmation test was carried out. Further, to find the wear mechanism on the composite sampleselectron microscopy (SEM) test was used.
Fabrication and Mechanical Properties of Hybrid Aluminum Metal Matrix Composite by Using Stir Casting Process
Authors: Srikiran S. , Venkatarao Ch. , Raviteja T.
Published: May 2021

An attempt is made to study the influence of dispersion of Groundnut shell ash (GSA) on the hardness and density of Aluminum Metal Matrix Composite. It is an attempt to use agricultural waste in trying to enhance the mechanical properties of the already existing materials. The work deals with the use of groundnut shell ash, mixed with aluminum using stir casting process. . The composites with varying percentage of groundnut shell ash from 0% to 6% were prepared. The prepared specimens were tested before and after the heat treatment process in terms of its hardness using a Rockwell Hardness Tester. The present work attempts to compare the hardness and density of prepared composites as compared to the alloy. The comparison is carried out before and after the heat treatment process. The results indicate the increasing hardness value and reducing density of composites.
Taguchi Analysis of MRR and PC for Sustainable Machining of Ti6Al4V Alloy Using WEDM Process
Authors: Devarasiddappa D. , Chandrasekaran Muthumari , Palanikumar K.
Published: May 2021

Wire-cut electrical discharge machining (WEDM) has emerged as the most important non-traditional machining technique in the recent years due to its exceptional accuracy and capability to produce net near shape components of electrically conductive materials. Ti-6Al-4V alloy is a hard-to-machine material and popularly used in bio-medical, aerospace, automotive, defence applications etc. due to its distinct merits. In this work, Taguchi optimization technique is applied to obtain optimum cutting conditions for material removal rate (MRR) and power consumption (PC) in WEDM of Ti6Al4V alloy. The result showed 16.38% improvement in MRR and 10.36% reduction in PC at the optimal parameter settings compared to initial cutting conditions. ANOVA result established pulse off time and current as highly significant process parameters affecting MRR (I: 56.58%, Toff: 23.57%) and PC (Toff: 43.26%, I: 31.24%). The response surface variation PC and MRR is studied using 3D plots. Surface morphology of machined component using scanning electron microscope images is also discussed.
Structural and Dielectric Properties of Calcium Bismuth Titanate (CaBi4Ti4O15) Ceramics
Authors: Basireddy Hymavathi , Thukkaraju Gopal Reddy , Borra Rajesh Kumar , Thota Subba Rao
Published: May 2021

Calcium Bismuth Titanate (CaBi4Ti4O15) ceramics were prepared by conventional solid-state reaction method. X-ray diffraction patterns confirms the orthorhombic structure of CaBi4Ti4O15 and the lattice parameters were also determined. Bulk densities of the sintered ceramics were measured by the Archimedes method with xylene as the liquid media and found to be 97~98% of X-ray density. The surface morphology of CaBi4Ti4O15 is studied by Scanning Electron Microscope (SEM) attached with energy dispersive X-ray spectroscopy (EDS) inorder to determine the grain size as well as the chemical composition of CaBi4Ti4O15. The dielectric constant (k) and dielectric tangent loss (tan δ) of CaBi4Ti4O15 as a function of temperature were measured in the frequency range of 100 Hz-100 KHz. The dielectric constant, dielectric loss and ac conductivity of CaBi4Ti4O15 increases gradually with an increase in the temperature from 303 to 573 K. The ac conductivity of the prepared sample reveals that the conduction mechanism is electronic hoping
Effect of Fiber Length and Content on the Mechanical Properties of Pineapple Leaf Fiber Reinforced-Epoxy Composites
Authors: Mittal Mohit , Chaudhary Rajiv
Published: May 2021

The behavior of a composite material under mechanical loading condition is significantly influenced by the geometrical dimensions (length and diameter) and the total content of reinforcing fiber. Therefore, this research work focused the effect of fiber length and content on the mechanical behavior of pineapple leaf fiber (PALF) reinforced-epoxy composites. In this regard, the total of four composite samples for each fiber length (10, 15, 20, and 25 mm) and content (17, 23, 34, and 43 vol.%) were developed using a hand lay-up molding technique and characterized for mechanical properties according to ASTM standards. The tensile and flexural strength of a composite was increased with the increase of PALF length and content up to 15 mm and 34 vol.% respectively. However, the composite of 25 mm fiber length with 43% fiber volume content exhibits the maximum impact strength.
Numerical Mechanical Analysis of Filled Rubber under Different Deformation States Based on a New Hyperelastic Constitutive Model
Authors: Fu Xin Tao , Wang Ze Peng , Ma Lian Xiang
Published: May 2021

The accuracy of the rubber constitutive model characterizing experiment data has a crucial influence on the mechanical analysis of rubber structures. In this paper, a new improved hyperelastic constitutive model is proposed, and the model is derived into the stress-strain forms of uniaxial tension, equibiaxial tension and pure shear. Based on the experimental data of filled rubber, the material parameters of each deformation state are obtained by using the newly proposed rubber hyperelastic constitutive model, and the uniaxial tensile (UT), Equibiaxial tension (ET) and Pure shear (PS) specimens are simulated and calculated in the finite element software. the stress state of each finite element specimen is analyzed and the obtained simulation data are compared with the experimental data. It is found that the new model can accurately characterize the hyperelastic mechanical properties of the experimental specimens in different deformation states. At the same time, the reasons for the deviation from the experimental data in the process of plane tensile simulation are analyzed and explained comprehensively. The reliability and accuracy of the classical rubber constitutive relations of polynomial models and eight-chain model are studied. the results show that different hyperelastic models have different ability to describe the hyperelastic behavior in different deformation states. the hyperelastic constitutive model proposed in this paper can be easily embedded into finite element software and has the advantages of accurate results, few material parameters and simple testing.
The Effect of 555-777 Defect on Mechanical Properties of Graphene Nanoribbon
Authors: Ma Xiao Fei , Sun Xue Mei , Wang Rui , Li Shuai
Published: May 2021

In this study, the effects of 555-777 defect on Young’s modulus, fracture strength and fracture strain of armchair graphene nanoribbons (AGNRs) and zigzag graphene nanoribbons (ZGNRs) were investigated by using Molecular Dynamics simulations under uniaxial tension. The simulation results show that 555-777 defect significantly reduces the fracture strength and fracture strain of AGNRs and ZGNRs, but has little effect on Young's modulus. The influence of 555-777 defect on the mechanical properties of AGNRs is greater than that of ZGNRs. This study provides a better understanding of mechanical properties of graphene nanoribbons.
Antibacterial Efficacy and Phytochemical Screening of Ocimum gratissimum Leaf Extracts against Some Selected Bacteria Isolated from Stool Samples of Diarrhea Patients
Authors: Olawale Oluwatoyosi Ezekiel , Olusola-Makinde Olubukola , Oladunmoye Muftau Kolawole
Published: May 2021

This study investigated the antibacterial activity of Ocimum gratissimum leaf extracts on antibiotic resistant bacteria from stool samples of diarrhea patient attending specialist hospitals in Ondo State, Nigeria. O. gratissimum leaf extracted with acetone, methanol and hot water solvents were assayed for qualitative and quantitative phytochemicals. Bioactive extracts were partially purified using standard chromatographic techniques. The crude and purified acetone extract had inhibitory effect on Escherichia coli (13.00±0.58 and 26.67±0.33 mm) according to CLSI, 2014 standard. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of purified acetone extract were 12.5 and 25 mg/ml respectively. Saponin had the highest quantity (42.50±0.32 mg/ml) on acetone extract while tannin had the lowest (1.29±0.01 mg/ml). O. gratissimum leaf acetone extract could be promising candidate in the treatment of diarrhea infection which is a major concern in paediatric medicine.

Keywords: Diarrhea, Ocimum gratissimum L., Antibacterial
Rutin prevents retinal ganglion cell death and exerts protective effects by regulating transforming growth factor-β2/Smad2/3Akt/PTEN signaling in experimental rat glaucoma
Authors: Li Ying , Qin Leilei , Ying Liang , Dong Hanguang , Wang Dabo
Published: May 2021

Purpose: To investigate the protective effect of rutin against glaucoma in a rat model, and the mechanisms involved.

Methods: Sprague-Dawley rats were injected hypertonic saline in the limbal vein for elevation of intraocular pressure (IOP). Rats in the treatment group were administered rutin at doses of 12.5, 25 or 50 mg/kg orally and daily for 21 days.

Results: Rutin markedly (p < 0.05) reduced IOP and prevented loss of retinal ganglion cells (RGCs). The expression of apoptotic pathway proteins, i.e., Bcl-xL, Bcl-2, Bad and Bax were significantly (p < 0.05) regulated by rutin. Moreover, rutin caused a substantial decrease in TGF-β2 expression, and also down-regulated p-Smad2 and p-Smad3 dose-dependently (p < 0.05). Raised levels of collagen I, fibronectin and elastin were effectively down-regulated. Rutin substantially up-regulated the Akt pathway involved in cell survival, and markedly improved the survival of RGCs subjected to hypoxia in vitro (p < 0.05).

Conclusion: These results reveal that rutin exerts protective effect against glaucoma in a rat model via a mechanism involving regulation of the TGF-β2/Smad2/3Akt/PTEN signaling pathways. Thus, rutin has potentials for use in the management of glaucoma.
Üniversite Öğrencilerinin Geri Dönüştürülebilen Evsel Atıklara İlişkin Farkındalık Durumları
Authors: KÖSE Selmin , ŞAHİN Kadriye , SAVAŞER Sevim , BALCI Serap
Published: May 2021

Amaç: Üniversite öğrencilerinin geri dönüştürülebilen evsel atıklara ilişkin farkındalık durumlarını belirlemektir.Yöntem: Tanımlayıcı-kesitsel tipte gerçekleştirilen araştırma İstanbul’da bulunan bir vakıf üniversitenin lisans programında eğitim gören öğrencilerden (N=1671) elde edildi. Veriler, literatür doğrultusunda araştırmacılar tarafından oluşturulan soru formu ile toplandı. Verilerin değerlendirilmesinde SPSS 20.0 Paket Programı kullanıldı. Bulgular: Katılımcıların %82.6’sının kadın olduğu, %88.1’inin sağlıkla ilgili bir fakültede öğrenim gördüğü, %98.3’ünün bekar olduğu ve %46’sının ekonomik durumlarını iyi olarak ifade ettikleri belirlendi. Katılımcıların %60.1’inin geri dönüştürülebilen evsel atıklarla ilgili konuları ders içeriklerinde aldığı, %48’inin geri dönüştürülebilen evsel atık denince akıllarına ilk olarak plastik madde geldiği, %38.8’inin ürünleri satın alırken ambalajının geri dönüştürülebilir olup olmadığına dikkat ettiği, %61.1’inin evde evsel atıkları ayrıştırmadığı, %59.5’inin yaşadığı mekanın yakınında ayrıştırıcı çöp kutusu olmadığı için atıkları ayrıştırmadığı tespit edildi. Katılımcılarının %88.1’inin geri dönüştürülebilen evsel atıkların toplanmasının ve ayrıştırılmasının yeterli olmadığını, %73.3’inin atıklar konusunda bilinçlendirme için farklı renkte konteynırların yaygınlaştırılması gerektiğini belirttikleri saptandı. Satın alınan ürünün ambalajının geri dönüşümüne dikkat etme durumu ile cinsiyet, öğrenim gördüğü bölüm, gelir durumu ve aldığı derslerde geri dönüştürülebilen evsel atıklara ilişkin bilgi alma durumu arasında fark olmadığı (p>0.05) bulundu.Sonuç: Öğrencilerin çoğunluğunun geri dönüştürülebilir evsel atıklar ile ilgili eğitim almalarına rağmen, evsel atıklar ile ilgili uygulamalarının ve farkındalıklarının yeterli olmadığı belirlendi.
Ağız ve Diş Sağlığı Hizmetlerinde Özel Sektör Tercih Edilme Sebebi: Ölçek Geliştirme
Authors: AKALIN Betül , KARAMAN Funda , KILIÇ GÜNGÖR Büşra
Published: May 2021

Amaç: Bu çalışma ile özel ağız ve diş sağlığı hizmet sunucularını tercih eden bireylerin seçim sebeplerini belirlemeye yönelik bir ölçek geliştirmek amaçlanmıştır.Yöntem: Çalışma, metodolojik bir araştırma olup, örneklemini özel ağız diş sağlığı hizmeti sunucularından hizmet almış olan 246 kişi oluşturmuştur. Araştırma verileri 10 Şubat – 10 Mayıs 2020 tarihleri arasında toplanmıştır. Araştırmacılar tarafından geliştirilen taslak ölçek ve bilgi formu ile veriler toplanmıştır. Çalışmadan elde edilmiş olan verilerin istatistiksel analizinde tanımlayıcı istatistikler, yapı geçerliliğini test etmek için açıklayıcı faktör analizi ve güvenirlik analizleri kapsamında ise Cronbach’s Alpha testleri kullanılmıştır. Bulgular: Yapılan faktör analizi neticesinde ölçek 22 madde ve hizmete erişim, güven, ilgi, bekleme süresi, kurum dışı etkenler olarak toplam beş faktörden oluşmuştur. Ölçek, “5” Kesinlikle Katılıyorum ile “1” Hiç Katılmıyorum arasında değerlendirilen 5’li likert tipinde bir ölçektir. Ölçekten alınabilecek toplam puan 21 ile 105 arasında değişmektedir. Puan arttıkça bireylerin ağız diş sağlığı hizmet alımı için özel sektörü tercih etme yönündeki sebepleri de artmaktadır. Ölçeğin, açıklanan toplam varyansı %60.38’dır. Cronbach’s Alfa katsayısının ise 0.90 olduğu saptanmıştır.Sonuç: Bu çalışma kapsamında ağız ve diş sağlığı hizmetlerinde özel sektör tercih edilme sebeplerini belirlemeye yönelik geçerli ve güvenilir bir ölçek geliştirilmiştir. Bulguların neticesi, ağız ve diş sağlığı hizmetlerinde özel sektör kullanıcılarının hizmete erişim, güven, ilgi, bekleme süresi ve kurum dışı etkenler konularındaki tercih sebeplerinde ölçeğin uygun niteliklerde olduğunu göstermiştir. Özel ağız ve diş sağlığı hizmet sunucularını tercih eden bireylerin seçim sebeplerini ölçmek için geliştirilen araç, geçerli ve güvenilir bulunmuştur.
Amyotrofik Lateral Sklerozda Semptom Yönetimine Genel Bakış
Authors: AKBAŞ Duygu , KARADAKOVAN Ayfer
Published: May 2021

Amyotrofik Lateral Skleroz (ALS), ortalama 2–5 yıl sağkalım gösteren ilerleyici bir motor nöron hastalığıdır. Uygulanan tedaviler sadece hastalığın ilerlemesini yavaşlatmaya yardımcı olmaktadır. Tedavideki bu eksiklikten dolayı ALS'nin kliniklerde multidisipliner semptom temelli yönetimi, hasta için en önemli güncel tedavi stratejisi olmaya devam etmektedir. Bu anlamda hemşireler ALS'nin klinik yönetiminde ekibin faaliyetlerini kontrol etmede, tedaviyi kolaylaştırmada, aile üyelerine bilinçli bakım uygulamalarında rehberlik etmede ve yaşam sonu destek aşamasında kritik bir rol oynar.
Hemşirelerin Yapay Organ Nakline Yaklaşımlarının ve Bireysel Yenilikçilik Durumlarının İncelenmesi
Authors: ÖZKAN Sultan , SALIK ASAR Arzu
Published: May 2021

Amaç: Hemşirelerin yapay organ nakline yaklaşımını ve yeniliklere açık olup olmadıklarını belirlemektir.Yöntem: Analitik kesitsel türdeki bu çalışmaya bir Devlet Hastanesinde çalışan toplam 149 hemşire dahil edildi. Veriler Hemşire Tanıtıcı Bilgi Formu, Hemşirelerin Yapay Organ Nakli Yaklaşımı Anketi ve Bireysel Yenilikçilik Ölçeği kullanılarak toplandı. Çalışma öncesinde etik kurul onayı alındı. Yapay Organ Nakli Yaklaşımı Anketi maddelerinin faktör yükleri tespit edilerek 3 alt boyut elde edildi. Verilerin analizinde tanımlayıcı istatistikler, Student t testi, tek yönlü varyans analizi (ANOVA) ve Pearson korelasyon analizi kullanıldı. Bulgular: Araştırmadaki hemşirelerin %83.9'u kadın, %80.5'i lisans ve %57'si cerrahi birimlerde çalışıyordu. Ortalama yaş 38.25±7.69 yıl ve çalışma yılı 16.97±8.83 idi. Hemşirelerin Yapay Organ Nakline Yaklaşım Anketi’nin ortalaması 73.03±8.39'dur. Hemşirelerin %53'ü ortalamanın altında olduğu için yaklaşımlarının orta düzeyde olduğu söylenebilir. Cerrahi birimlerde ortalama (72.62±8.34), dahili birimlerde çalışan hemşirelerden (73.56±8.49) düşüktür. Hemşirelerin Bireysel Yenilikçilik Ölçeği toplam puan ortalaması 61.75±6.95'tir. Kadın hemşirelerin Bireysel Yenilikçilik Ölçeği ortalaması (69.34±8.00), erkek hemşirelerden (64.50±7.52) anlamlı düzeyde yüksek bulundu (t = 2.74, p=.007).Sonuç: Hemşirelerin yapay organ nakline yaklaşımları orta seviyede ve bireysel yenilikçilik özellikleri de “sorgulayıcı” kategorisindedir. Tıbbi ve cerrahi uygulamalar sürekli değiştiği için hemşirelerin bilgi ve becerileri sürekli güncellenmeli ve yeni teknolojiye hızlı bir şekilde uyum sağlayarak ustalaşmaları gerekir.
Some remarks on the mean value of the riemann zeta-function and other Dirichlet series-II
Authors: Ramachandra K
Published: May 2021

This is a sequel (Part II) to an earlier article with the same title. There are reasons to expect that the estimates proved in Part I without the factor $(\log\log H)^{-C}$ represent the real truth, and this is indeed proved in part II on the assumption that in the first estimate $2k$ is an integer.
%This is of great interest, for little has been known on the mean value of $\vert\zeta(\frac{1}{2}+it)\vert^k$ for odd $k$, say $k=1$; for even $k$, see the book by E. C. Titchmarsh [The theory of the Riemann zeta function, Clarendon Press, Oxford, 1951, Theorem 7.19].
The proofs are based on applications of classical function-theoretic theorems, together with mean value theorems for Dirichlet polynomials or series.
%In the case of the zeta function, the principle is to write $\vert\zeta(s)\vert^k=\vert\zeta(s)^{k/2}\vert^2$, where $\zeta(s)^{k/2}$ is related to a rapidly convergent series which is essentially a partial sum of the Dirichlet series of $\zeta(s)^{k/2}$, convergent in the half-plane $\sigma>1$.
A remark on cube-free numbers in Segal-Piatestki-Shapiro sequences
Authors: Deshouillers Jean-Marc
Published: May 2021

Using a method due to G. J. Rieger, we show that for $1 < c < 2 $ one has, as $x$ tends to infinity $$\textrm{Card}{n \leq x : \lfloor{n^c}\rfloor} \ \textrm{ is cube-free} } = \frac{x}{\zeta(3)} + O (x^{ (c+1)/3} \log x)$$ , thus improving on a recent result by Zhang Min and Li Jinjiang.
Field Experiences, Mentoring, and Preservice Early Childhood Teachers’ Science Teaching Self-Efficacy Beliefs
Authors: Simsar Ahmet , Jones Ithel
Published: May 2021

In this study relationships between preservice early childhood teachers’ self-efficacy beliefs and their mentor teachers’ mentoring were examined. Quantitative research method was used in the study by the using multivariate data collections. The Science Teaching Efficacy Belief Instrument (STEBI) was administered to 96 pre-service teachers and mentor teachers. Time spent teaching and observing science was recorded also recorded by participants by the using time trackers. The Mentoring for Effective Science Teaching (MEST) instrument measured perceptions of the teachers’ mentoring activities, including modeling and feedback. Correlational analyses estimated the relationship between the preservice and mentor teachers’ self-efficacy beliefs, beliefs and time spent teaching, and beliefs and modeling and feedback. The findings suggest that mentor teachers play an important role in the preparation of preservice teachers, and that this role is particularly true for those mentors with higher science teaching self-efficacy beliefs. It also showed that how teaching practices have significant roles while preparing future teachers. For teacher education program could be pay attention to teaching practices while giving a decision for choosing mentor teachers. For future researchers may also look at the different sections of mentoring practices and their impacts on preservice teacher’s teaching skills.
Teoria do caos e a não linearidade no contexto da pandemia diante da sensibilidade as ações humanas: uma reflexão sobre as mudanças educacionais
Authors: Coqui Alexandre Dijan , Coqui Neto Benedito Evanberto , Dos Santos Douglas Manoel Antonio de Abreu Pestana
Published: May 2021

O que nos remete imaginar viver próximos de um filme de ficção cientifica, a partir das inúmeras mudanças ocorridas com o alto risco de contaminação causada pela Covid-19, muitas decisões contrárias aos alertas dos cientistas nos aproximam de um enredo de filmes ou web séries nessa temática. Contudo, o problema está na veracidade e no aumento exponencial de casos e óbitos. O ponto de partida desse artigo está na relação entre os conhecimentos da Física e da Matemática, no estudo da teoria do caos e das equações diferenciais ordinárias para explicar os fenômenos ocorridos desde a descoberta do vírus até a suspensão das aulas e o início do ensino remoto, contrapondo a esses fatos as diversas variáveis que alteram o estado inicial de um evento e aumentam sucessivamente alterando o resultado, supondo certos resultados de acordo as decisões anteriores. Este é o objetivo do tema: relacionar os eventos e as deliberações para compreender o estado atual no Brasil, levando a discussão alguns estudos e pesquisas que possibilitem fundamentar o nosso trabalho. Para isso, a análise de fatos tanto na realidade quanto na ficção, servem para criar uma analogia do contexto atual, as interferências iniciais e como elas influenciaram no resultado final. Esse artigo não é um ponto final, mas um alerta para as futuras ações e como elas terão o poder de intervir no futuro da educação no Brasil.
AVALIAÇÃO E MELHORIA DA QUALIDADE DA PREVENÇÃO DE FLEBITE EM PACIENTES COM CATETER INTRAVENOSO PERIFÉRICO
Authors: Machado de Araújo Loraine , Cavalcante Rocha Fabrícia , De Sousa Martins Melo de Araújo Gabriela , Rodrigues Medeiros Wilton , Peixoto dos Santos Pennafort Viviane , Oliveira de Mendonça Ana Elza
Published: May 2021

Objetivo: avaliar o efeito da implantação de um ciclo de melhoria da qualidade na prevenção de flebite em pacientes submetidos a implante de cateter intravenoso periférico. Métodos: trata-se de um estudo quase-experimental, do tipo antes e depois, com abordagem quantitativa.  Utilizou-se o ciclo de melhoria com avaliação do nível de qualidade, planejamento e execução de intervenções oportunas e reavaliação. Resultados: os resultados apontaram que houve aumento no número e no nível de cumprimento dos critérios de qualidade com percentuais maiores que 90%. Alcançou-se uma melhoria absoluta de 32,6%, sendo significativa em 7 dos 13 critérios, nos quais houve melhoria do nível de qualidade. Conclusão: o desenvolvimento do ciclo de melhoria mostrou-se efetivo e de reduzido custo na ampliação da qualidade na prevenção de flebite no serviço.
DISTRIBUTION OF DELIBERATE SELF-POISONING BY SOCIO-DEMOGRAPHIC FACTORS, PRECIPITATING EVENTS, TYPE OF SUBSTANCE AND MORTALITY IN POPULATION OF HAZARA DIVISION, PAKISTAN
Authors: Khan Adnan , Rauf Abdul , Malik Saqib , Ullah Imran , Khan Abdul Majid , Zaman Haidar , Awan Saleem
Published: May 2021

Background: Deliberate self-poisoning is important cause of deaths in younger population. The objectives of this study were to determine the distribution of deliberate self-poisoning by 12 socio-demographic factors, precipitating events, type of substance and mortality in population of Hazara Division, Pakistan.

Materials & Methods: This cross-sectional study was conducted in the Department of Medicine, Ayub Medical College, Abbottabad, Pakistan from October 9, 2017 to December 28, 2018. 102 deliberate self-poisoning patients were selected consecutively from population at risk. Variables were 12 socio-demographic factors, precipitating events, type of substance and mortality. All variables being categorical were described by count and percentage for sample and by confidence intervals for proportion for population at 95% confidence level.

RESULTS: Deliberate self-poisoning cases (n=102) were higher in women 80.39%, in age group 18-25 years 54.90%, similar in urban 49.02% and rural 50.98%, higher in non-Pathan 74.51%, in married 57.84%, in joint family 79.41%, in up to matric education 85.29% and in housewives 52.94%, 4.90% with previous history of self-harm, 1.96% with family history of self-harm and higher in lower socioeconomic group 81.37%. The most common precipitating event was interpersonal difficulties with spouse, family members or friends 56.86%, while the most common type of substance was organophosphate 62.75%. Mortality was 3.92%.

Conclusion: Deliberate self-poisoning was more prevalent in women, younger age group, married, joint family, educated up to matric, housewives and lower socioeconomic status. Family conflict was most common precipitating factor. Organophosphate was most common type of substance and mortality was high 3.92%.
Rancang Bangun Alat Ukur Kelembaban Tanah Berbasis Arduino Uno
Authors: Darmawan I Gusti Eka , Yadie Erry , Subagyo Hari
Published: May 2021

Alat ukur kelembaban tanah ini menggunakan Arduino Uno dan soil moisture sensor YL 69. Alat ukur ini dapat dipergunakan untuk manajemen sumber daya air, peringatan awal kekeringan, penjadwalan irigasi, dan perkiraan cuaca.  Berdasarkan hasil pengujian dan beberapa proses kalibrasi, alat hasil rancang bangun dapat memberikan 3 informasi yaitu ADC (Analog to Digital Converter), persentase kelembaban, dan kategori  kondisi tanah yang diukur. Pengkategorian 5 kondisi tanah terbagi sebagai berikut (sangat kering, kering, normal, basah, dan sangat basah). Berdasarkan media pengacu atau pembanding, alat hasil rancang bangun ini memiliki selisih pengukuran persentase kelembaban kurang lebih 1,7 %  dengan alat ukur Soil Tester Takamura Model DM 05
Analisis Kelayakan Rekondisi Pembangkit Listrik Tenaga Surya Kodingareng 400 kW
Authors: Shemina Shemina , Suryanto Suryanto , Mulyadi Musrady
Published: May 2021

Abstrak- Kondisi geografis Indonesia yang terdiri dari ribuan pulau menyebabkan masih banyaknya daerah terpencil yang belum terjangkau listrik PLN. Masih banyak daerah-daerah terpencil yang belum terjangkau oleh jaringan listrik.Salah satu pulau yang memanfaatkan potensi energi surya adalah Pulau Kodingareng yang memiliki PLTS dengan kapasitas 400 kW, namun sekarang ini PLTS tersebut mengalami kerusakan pada komponen baterai dan inverter. Sehingga studi ini akan menganalisis kelayakan rekondisi PLTS Kodingareng dengan menggunakan dua skema, Rekondisi skema 1 mengganti komponen yang mengalami kerusakan sesuai dengan spesifikasi yang ada pada saat ini. Sedangkan Rekondisi skema 2 mengganti komponen yang mengalami kerusakan berdasarkan perhitungan ulang dari kebutuhan pembangkit yang tersedia.Berdasarkan dari hasil perhitungan yang menggunakan metode Net Present Value (NPV) dan metode Internal Rate of Return (IRR). Kita dapat menyimpulkan dari hasil analisis Rekondisi skema 1 diperoleh hasil yang tidak layak pada kedua metode  dengan nilai dari NPV yaitu Rp. -9,781,952,693,- dan nilai IRR yaitu -52,48%. Sedangkan pada analisis Rekondisi skema 2 diperoleh hasil layak pada kedua metode yang digunakan, dengan nilai dari NPV yaitu Rp. 1,112.194.399 ,-dan nilai IRR yaitu 24,24%.
The Effect of Human Capital, Total Assets, Total Liabilities on the Net Income of a Company
Authors: Karo-Karo Surbakti , Ginting Jihen
Published: May 2021

The problem in this study is that every company wants low costs and high profits for the company, every employee wants a high salary/wages for payment of performance, also how much influence the assets and debts of the company in providing net profit for the company. This study aims to determine the effect of Human Capital, Total Assets and Total Liabilities on the company's Net Profit in companies listed on the Indonesia Stock Exchange LQ-45 index. The sampling method used was purposive sampling, with a total sample of 27 companies, for 2017-2018 there were 54 samples. The results show that Human Capital, Total Liabilities and Total Assets simultaneously have a significant effect on company net income.
DEMONSTRATION TASKS OF LIQUID AND GAS PROPERTIES AND THEIR RATIONALE SENSE
Authors: Šlekienė Violeta , Ragulienė Loreta
Published: May 2021

The article reveals the importance of demonstration tasks in physics teaching in secondary schools. Four demonstration of the liquid and gas properties are presented and analyzed. They are: Pressure dependence of gas flow speed; Pressure reduction in air-stream; Wing lift; Liquid surface tension. Reasoning schemes for giving a logical sense to these physics demo tasks are developed. The proposed reasoning schemes reach to activate students' thinking, understanding the demonstrations during the observed physical phenomena, i.e. help students to: understand the nature of the demo task, determine cause - effect relationships and dependencies, compare conditions and findings, summarize the results, do conclusions. Such using of demonstration tasks is useful to both of teacher and pupil: teacher controls the content of teaching and a learning of pupils, pupils - are focused to self-activities, encouraged to think, analyze, summarize and do conclusions.
Key words: physics teaching, demonstration task, liquid and gas properties, reasoning schemes.
Pasado y presente de los usos medicinales del cannabis en México
Authors: Schievenini José Domingo , Pérez Ricart Carlos
Published: May 2021

Este artículo tiene dos objetivos. Por un lado, examinar la historia de los usos terapéuticos y medicinales del cannabis en México; por el otro, exponer el proceso histórico que ha dado lugar a una compleja discusión sobre los usos médicos del cannabis en el México contemporáneo. La primera parte del artículo documenta la manera cómo la planta cannabis y sus derivados fueron incorporados en la farmacéutica mexicana durante el siglo XIX y principios del XX. La segunda parte expone el proceso tras el cual la planta cannabis dejó de ser considerada por los discursos oficiales un medicamento, para convertirse en una droga prohibida en el siglo XX. A la luz de esos antecedentes, la tercera sección expone de manera puntual el debate legislativo que actualmente busca reivindicar los usos medicinales del cannabis en México. Para la elaboración de este artículo se sistematizaron fuentes documentales de naturaleza diversa, las cuales fueron abordadas desde perspectivas ancladas tanto en la historia cultural e institucional, como en el debate actual de política global de drogas.
Objetos de la Gubernamentalidad: La Dimensión Epistémica del Consumo de Drogas en el Estado Chileno.
Authors: Sanhueza Nicolas
Published: May 2021

Este artículo tiene por objetivo evidenciar la emergencia, articulación y alcances de un objeto que caracteriza la dimensión epistémica de la drogadicción, en la esfera pública en Chile. Buscando estudiar los procesos de producción de conocimiento científico de este problema social, desarrollamos un análisis empírico de las prácticas de científicos sociales que trabajan en un centro de estudio público, responsables de la producción de evidencia científica en la materia. Entregamos evidencia de las diferentes dinámicas, orientaciones y objetos que se producen, a la hora de elaborar el conocimiento científico social del consumo de drogas, que contribuyen a su elaboración y delimitación como un problema social desde el Estado. Los resultados nos evidencian el rol preponderante del Estado, en alianza con las Ciencias Sociales positivistas, a la hora de producir Boundary Objects, capaces de articular un conjunto de actores, practicas, instituciones y conocimientos diversos, en vista de objetivos gubernamentales comunes.
Lynteris C. (Ed.) (2019), Framing Animals as Epidemic Villains. Histories of Non-Humans Disease Vectors, Londres, Palgrave Mac Millan, 245 pp.
Authors: Rojas Nicolas Facundo
Published: May 2021

La siguiente reseña tiene como objetivo comentar el libro Framing Animals as Epidemic Villains editado por el antropologo Christos Lynteris, el cuál se centra en analizar las historias de distintos vectores no-humanos de enfermedades. Se argumenta que el libro, inscripto en el contexto de la emergencia de la COVID-19 como fenenomeno pandémico, resulta relevante, tanto en términos empiricos como te´órico-conceptuales, para los lectores de América Latina interesados en la tématica de la salud pública global y la emergencia de conocimientos tecnocientíficos asociados a esta.
TEACHING PRACTICAL RESEARCH FOR SENIOR HIGH SCHOOL; AN IN-DEPTH STUDY
Authors: D. Lucas Marlyn , Bernal Jr Hernando L. , P. Lucas Mark
Published: May 2021

Teaching Practical Research in the Senior High School was a challenge but at the same time a room for exploration. This study investigated the key areas in the interconnected teaching strategies employed to grade 12 students of which are most and least helpful in coming up with a good research output and what suggestions can be given to improve areas that are least useful. It is qualitative in nature and used phenomenological design. Reflection worksheets and interview schedule were the main sources of data.

Results reveal that students come up with a good research output because of the following key areas: ‘guidance from someone who is passionate with research’ as represented by their research critique, research teacher, resource speaker from the seminar conducted, and group mates; ‘guidance from something or activities conducted’ like the sample researches in the library visitation, worksheets answered, and the research defenses; and ‘teamwork’ among the members of the group. On the other hand, key areas which are least useful are: ‘clash of ideas and unequal effort’ among the members; ‘time consuming for some of the written works’; and ‘no review of related literature’ during the library hopping. Suggestions given where: to choose your own group mates of which each member should have the same field of interest, to remove worksheets not needed in the research paper; and to check online regarding availability of literature in the library. Further suggestions are to rearranged the sequence of the interconnected strategies which are as follows: grouping of students, having a research critique, seminar in conducting research, library visitation/work activity, proposal defense, final defense and the worksheet activities be given throughout the semester. Furthermore, there should be a culminating activity for students to share their outputs.

Teaching research is a wholesome process. By then, the researcher recommends to organize a group orientation for the teacher-coaches/mentors on the creation of school research council or school mentoring committee for peer reviewing on the students research output. Further, student research presentation (oral, poster, gallery type, etc.), student research conference/colloquium, student research journal, etc. be organized to further nourish the culture of research in the part of the students, teachers and staffs involve.