bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermal stability of N-heterocycle-stabilized iodanes – a systematic investigation
Authors: Boelke Andreas , Vlasenko Yulia A , Yusubov Mekhman S , Nachtsheim Boris J , Postnikov Pavel S
Published: September 2019

The thermal stability of pseudocyclic and cyclic N-heterocycle-stabilized (hydroxy)aryl- and mesityl(aryl)-λ3-iodanes (NHIs) through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) is investigated. Peak decomposition temperatures (Tpeak) were observed within a wide range between 120 and 270 °C. Decomposition enthalpies (ΔHdec) varied from −29.81 to 141.13 kJ/mol. A direct comparison between pseudocyclic and cyclic NHIs revealed high Tpeak but also higher ΔHdec values for the latter ones. NHIs bearing N-heterocycles with a high N/C-ratio such as triazoles show among the lowest Tpeak and the highest ΔHdec values. A comparison of NHIs with known (pseudo)cyclic benziodoxolones is made and we further correlated their thermal stability with reactivity in a model oxygenation.
The Trans-Neptunian Object (84922) 2003 VS2 through Stellar Occultations
Authors: Benedetti-Rossi Gustavo , Santos-Sanz P. , Ortiz J. L. , Assafin M. , Sicardy B. , Morales N. , Vieira-Martins R. , Duffard R. , Braga-Ribas F. , Rommel F. L. , Camargo J. I. B. , Desmars J. , Colas A. F. , Vachier F. , Alvarez-Candal A. , Fernández-Valenzuela E. , Almenares L. , Artola R. , Baum T.-P. , Behrend R. , Bérard D. , Bianco F. B. , Brosch N. , Ceretta A. , Colazo C. A. , Gomes-Junior A. R. , Ivanov V. D. , Jehin E. , Kaspi S. , Lecacheux J. , Maury A. , Melia R. , Moindrot S. , Morgado B. , Opitom C. , Peyrot A. , Pollock J. , Pratt A. , Roland S. , Spagnotto J. , Tancredi G. , Teng J.-P. , Cacella P. , Emilio M. , Feys F. , Gil-Hutton R. , Jacques C. , Machado D. I. , Malacarne M. , Manulis I. , Milone A. C. , Rojas G. , Sfair R.
Published: September 2019

We present results from three world-wide campaigns that resulted in the detections of two single-chord and one multi-chord stellar occultations by the plutino object (84922) 2003 VS2. From the single-chord occultations in 2013 and 2014 we obtained accurate astrometric positions for the object, while from the multi-chord occultation on 2014 November 7, we obtained the parameters of the best-fitting ellipse to the limb of the body at the time of occultation. We also obtained short-term photometry data for the body in order to derive its rotational phase during the occultation. The rotational light curve present a peak-to-peak amplitude of 0.141 ± 0.009 mag. This allows us to reconstruct the 3D shape of the body, with principal semi-axes of a = 313.8 ± 7.1 km,

km, and

km, which is not consistent with a Jacobi triaxial equilibrium figure. The derived spherical volume equivalent diameter of

km is about 5% larger than the radiometric diameter of 2003 VS2 derived from Herschel data of 523 ± 35 km, but still compatible with it within error bars. From those results we can also derive the geometric albedo (

) and, under the assumption that the object is a Maclaurin spheroid, the density

for the plutino. The disappearances and reappearances of the star during the occultations do not show any compelling evidence for a global atmosphere considering a pressure upper limit of about 1 microbar for a pure nitrogen atmosphere, nor secondary features (e.g., rings or satellite) around the main body.
Interstellar Glycolaldehyde, Methyl Formate, and Acetic Acid. I. A Bimodal Abundance Pattern in Star-forming Regions
Authors: El-Abd Samer J. , Brogan Crystal L. , Hunter Todd R. , Willis Eric R. , Garrod Robin T. , McGuire Brett A.
Published: September 2019

The relative column densities of the structural isomers methyl formate, glycolaldehyde, and acetic acid are derived for a dozen positions toward the massive star-forming regions MM1 and MM2 in the NGC 6334I complex, which are separated by ∼4000 au. Relative column densities of these molecules are also gathered from the literature for 13 other star-forming regions. In this combined data set, a clear bimodal distribution is observed in the relative column densities of glycolaldehyde and methyl formate. No such distribution is evident with acetic acid. The two trends are comprised of star-forming regions with a variety of masses, suggesting that there must be some other common parameter that is heavily impacting the formation of glycolaldehyde. This is indicative of some demonstrable differentiation in these cores; studying the abundances of these isomers may provide a clue as to the integral chemical processes ongoing in a variety of protostellar environments.
Elemental Abundances in M31: First Alpha and Iron Abundance Measurements in M31's Giant Stellar Stream∗
Authors: Gilbert Karoline M. , Kirby Evan N. , Escala Ivanna , Wojno Jennifer , Kalirai Jason S. , Guhathakurta Puragra
Published: September 2019

We present the first measurements of [Fe/H] and

abundances, obtained using spectral synthesis modeling, for red giant branch stars in M31's giant stellar stream (GSS). The spectroscopic observations, obtained at a projected distance of 17 kpc from M31's center, yielded 61 stars with [Fe/H] measurements, including 21 stars with

measurements, from 112 targets identified as M31 stars. The [Fe/H] measurements confirm the expectation from photometric metallicity estimates that stars in this region of M31's halo are relatively metal rich compared to stars in the Milky Way’s inner halo: more than half the stars in the field, including those not associated with kinematically identified substructure, have [Fe/H] abundances

. The stars in this field are α-enhanced at lower metallicities, while

decreases with increasing [Fe/H] above metallicities of [Fe/H] ≳ −0.9. Three kinematical components have been previously identified in this field: the GSS, a second kinematically cold feature of unknown origin, and M31's kinematically hot halo. We compare probabilistic [Fe/H] and

distribution functions for each of the components. The GSS and the second kinematically cold feature have very similar abundance distributions, while the halo component is more metal poor. Although the current sample sizes are small, a comparison of the abundances of stars in the GSS field with abundances of M31 halo and dSph stars from the literature indicate that the progenitor of the stream was likely more massive, and experienced a higher efficiency of star formation, than M31's existing dSphs or the dEs NGC 147 and NGC 185.
Two-zone Emission Modeling of PKS 1510-089 during the High State of 2015
Authors: Prince Raj , Gupta Nayantara , Nalewajko Krzysztof
Published: September 2019

PKS 1510-089 is one of the most variable blazars in the third Fermi-LAT source catalog. During 2015, this source has shown four flares identified as flares A, B, C, and D in between three quiescent states: Q1, Q2, and Q3. The multiwavelength data from Fermi-LAT, Swift-XRT/Ultraviolet/Optical Telescope, Owens Valley Radio Observatory, and Sub-millimeter array Observatory are used in our work to model these states. Different flux doubling times have been observed in different energy bands, which indicate that there could be multiple emission zones. The flux doubling time from the gamma-ray and X-ray light curves are found to be 10.6 hr, 2.5 days, and the average flux doubling time in the optical/UV band is 1 day. It is possible that the gamma-ray and optical/UV emission are produced in the same region whereas X-ray emission is coming from a different region along the jet axis. We have also estimated the discrete correlation functions (DCFs) among the light curves of different energy bands to infer about their emission regions. However, our DCF analysis does not show significant correlation in different energy bands though it shows peaks in some cases at small time lags. We perform a two-zone multiwavelength time-dependent modeling with one emission zone located near the outer edge of the broad line region and another further away in the dusty/molecular torus (DT/MT) region to study this high state.
A Simplified, Lossless Reanalysis of PAPER-64
Authors: Kolopanis Matthew , Jacobs Daniel C. , Cheng Carina , Parsons Aaron R. , Kohn Saul A. , Pober Jonathan C. , Aguirre James E. , Ali Zaki S. , Bernardi Gianni , Bradley Richard F. , Carilli Chris L. , DeBoer David R. , Dexter Matthew R. , Dillon Joshua S. , Kerrigan Joshua , Klima Pat , Liu Adrian , MacMahon David H. E. , Moore David F. , Thyagarajan Nithyanandan , Nunhokee Chuneeta D. , Walbrugh William P. , Walker Andre
Published: September 2019

We present limits on the 21 cm power spectrum from the Epoch of Reionization using data from the 64 antenna configuration of the Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) analyzed through a power spectrum pipeline independent from previous PAPER analyses. Previously reported results from PAPER have been found to contain significant signal loss. Several lossy steps from previous PAPER pipelines have not been included in this analysis, namely delay-based foreground filtering, optimal fringe-rate filtering, and empirical covariance-based estimators. Steps that remain in common with previous analyses include redundant calibration and local sidereal time (LST) binning. The power spectra reported here are effectively the result of applying a linear Fourier transform analysis to the calibrated, LST-binned data. This analysis also uses more data than previous publications, including the complete available redshift range of z ∼ 7.5 to 11. In previous PAPER analyses, many power spectrum measurements were found to be detections of noncosmological power at levels of significance ranging from two to hundreds of times the theoretical noise. Here, excess power is examined using redundancy between baselines and power spectrum jackknives. The upper limits we find on the 21 cm power spectrum from reionization are

,

,

,

,

, and

at redshifts z = 10.87, 9.93, 8.68, 8.37, 8.13, and 7.48, respectively. For reasons described in Cheng et al., these limits supersede all previous PAPER results.
New data on two species of the genus Hemicycliophora de Man, 1921 (Tylenchida)
Authors: Ilieva Zhenya , Iliev Iliyan
Published: September 2019

Species of the genus Hemicycliophora de Man, 1921 are not very often reported from natural or agricultural areas of Bulgaria. Hemicycliophora labiata Colbran 1920 was reported from the region of Blagoevgrad (Choleva-Abadjieva and Budurova 1983) but in later studies no other records of the genus were found. We isolated specimens of Hemicycliophora from intensively irrigated patches with wilt and postponed plants from a strawberry field in the Plovdiv region (30.10.2015) and a golf course in the Dobrich region (27.07.2019). Nematodes were isolated by Oostenbrink elutriator followed by 72 h exposition, killed by gently heating at temperature of 55oC and fixed in FAA. Fifty two specimens from Plovdiv region and 31 specimens from Dobrich were mounted in glycerol after Seinhorst (1959).

The specimens from Plovdiv were identified as H. poranga Monteiro & Lordello, 1978. Ther morphology is similar to those of the population described from Pistachino, Italy (Subbotin et al. 2017). According to our knowledge this is the first record of the species on the Balkans.

The population from Dobrich was similar morphologically to Polish populations of H. epicharoides Loof, 1968 (Brzeski 1998). It differed by a longer vulvar sleeve in some of the specimens and a generally less stout tail. That is first record of the species in Bulgaria, but it was found on the Balkans in Serbia and Greece (Krnjaic and Krnjaic 1976, Subbotin et al. 2017). Morphometrics and microphotograph for both species were obtained.
Effects of the Tell Me About Me Program: Perception of Social Support, Self-Esteem, and Self-Compassion in Older Adults
Authors: Mert Kader , Aker Ahmet Tamer
Published: September 2019

The aim of the current quasi-experimental study was to investigate the effect of the Tell Me About Me program on the perception of social support, self-esteem, and self-compassion among 44 older adults in a nursing home in Turkey. Data were collected from May 2015 to May 2016 via a sociodemographic characteristics form, the Multidimensional Scale of Perceived Social Support, Coopersmith Self-Esteem Inventory, and Self-Compassion Scale. The difference found between the mean scores of participants' perceived social support and self-esteem on the pretest, posttest, and retest was statistically significant (
p
< 0.01), but the difference in their mean scores in self-compassion on the pretest, posttest, and retest was not significant (
p
> 0.05). It is recommended that this program be used for improving social support and self-esteem among older adults. [
Journal of Gerontological Nursing, 45
(10), 39–46.]
Patient and Provider Perspectives on Deprescribing Proton Pump Inhibitors
Authors: Ikeji Chisom , Williams Anne , Hennawi George , Brandt Nicole J.
Published: September 2019

The aim of the current study is to describe proton pump inhibitor (PPI) prescribing trends in an older adult population and elucidate perspectives regarding PPI deprescribing. A retrospective chart review and a prospective cross-sectional analysis of provider and patient surveys were conducted. The retrospective chart review identified 107 patients age ≥65 who were prescribed PPI therapy. Nineteen patients on PPI therapy and 74 providers completed surveys regarding their perspectives on PPI deprescribing. PPI therapy was potentially inappropriate for 66% of patients based on dose, duration, and/or indication. Provider barriers to deprescribing included fear of outcomes, access to documentation, and uncertainty of current guidelines. This study illustrates the prevalence of long-term PPI use in geriatric patients without associated clinical indications, as well as perceived barriers to deprescribing. Long-term PPI use is associated with significant side effects; therefore, successful deprescribing must address these perceived barriers. [
Journal of Gerontological Nursing, 45
(10), 9–17.]
Juan Antonio Moldes: De criado a comerciante global y funcionario regio (Salta, Buenos Aires, Cádiz, Filipinas, 1764-1804)
Authors: Justiniano María Fernanda , Madregal Carina , Anachuri Gabriel
Published: September 2019

Formadores de opinión y estudiosos de lo social favorecieron la construcción de principios diferenciadores en la flamante sociedad salteña independiente. Los enfoques global y relacional proporcionan un utillaje teórico y metodológico que permiten superar los límites interpretativos del nacionalismo metodológico cargado de supuestos eurocéntricos.
Este artículo se propone deconstruir esta operación ideológica y mostrar a través del estudio de Juan Antonio Moldes, las posibilidades de ascenso social que cupieron en el interior de la Monarquía hispánica y en la Intendencia de Salta del Tucumán.
Moldes fue un criado gallego que, a través de las actividades del préstamo y el tejido de una red comercial de nivel global que abarcó Salta, Buenos Aires, Cádiz, Filipinas, La Paz y Potosí, pudo enriquecerse y promocionar social, política y económicamente en la sociedad que le cobijó.
Recaudar en los confines del imperio: impuestos y remesas en la Caja Real de Mendoza (Río de la Plata) a fines del período colonial 1779-1810
Authors: Facundo Galarza Antonio
Published: September 2019

El artículo presenta los resultados de la investigación realizada sobre la estructura tributaria de la Caja Real de Mendoza —Río de la Plata—, a fines del período colonial. Se indaga en la evolución de las recaudaciones de los diferentes impuestos, los suplementos y las transferencias recibidos por la hacienda regional. También se caracteriza la estructura de gastos. En particular, se presta especial atención al caudal de remesas que desde dicha Caja se enviaron a la tesorería general de Buenos Aires, a fin de estimar la capacidad de extracción de recursos de la Real Hacienda de la capital sobre las jurisdicciones del interior virreinal. Se pretende contribuir a caracterizar el relativo éxito/fracaso del sistema fiscal imperial a fines del siglo XVIII a la hora de recaudar impuestos y de asegurar las transferencias de remesas según las necesidades de la Monarquía española.
Conflicto político y prensa federal durante la Guerra de la Triple Alianza. Entre Ríos, 1864-1867
Authors: Alabart Mónica , Pérez Mariana
Published: September 2019

Desde el comienzo de la Guerra de la Triple Alianza la prensa fue un ámbito privilegiado para la polémica y el debate dentro del escenario político. En este trabajo analizamos la prensa federal de la provincia de Entre Ríos con el propósito de indagar sobre la dinámica política entrerriana y su interrelación con la guerra. Nuestra hipótesis es que, si bien la prensa federal entrerriana mostró una constante oposición al conflicto bélico, la crítica no fue lineal a lo largo del período aquí analizado y estuvo subordinada a la impugnación de las políticas del presidente Bartolomé Mitre y del partido liberal.
Privacy-Preserving and Publicly Verifiable Protocol for Outsourcing Polynomials Evaluation to a Malicious Cloud
Authors: Xie Dawei , Yang Haining , Qin Jing , Ma Jixin
Published: September 2019

As cloud computing provides affordable and scalable computational resources, delegating heavy computing tasks to the cloud service providers is appealing to individuals and companies. Among different types of specific computations, the polynomial evaluation is an important one due to its wide usage in engineering and scientific fields. Cloud service providers may not be trusted, thus, the validity and the privacy of such computation should be guaranteed. In this article, the authors present a protocol for publicly verifiable delegations of high degree polynomials. Compared with the existing solutions, it ensures the privacy of outsourced functions and actual results. And the protocol satisfies the property of blind verifiability such that the results can be publicly verified without learning the value. The protocol also improves in efficiency.
Haplotype Analysis of the T-Cell Receptor Beta (TCRB) Locus by Long-amplicon TCRB Repertoire Sequencing
Authors: Looney Timothy J , Duose Dzifa Y , Lowman Geoffrey , Linch Elizabeth , Hajjar Joud , Topacio-Hall Denise , Xu Mingxuan , Zheng Jianping , Alshawa Anas , Tapia Coya , Stephen Bettzy , Wang Linghua , Meric-Bernstam Funda , Miller Lauren , Glavin Alexander , Lin Lifeng , Gong Jing , Conroy Jeffrey , Morrison Carl , Hyland Fiona , Naing Aung
Published: September 2019

Background: Polymorphism within the human T-cell receptor beta variable (TRBV) gene has been proposed as a risk factor for autoimmune disease and immune-related adverse events (IRAEs) during immunotherapy. Previous efforts to evaluate TRBV polymorphism by whole genome sequencing have been hampered by the repetitive nature of the T-cell receptor beta (TCRB) locus. We present a novel long-amplicon TCRB repertoire sequencing approach to enable TRBV haplotype analysis from peripheral blood. Methods: Peripheral blood leukocyte total RNA from 81 Caucasians was used for sequencing of TCRB chains via the Oncomine TCRB-LR assay (amplicon spanning CDR1, 2 and 3) and the Ion Gene Studio S5. VDJ rearrangements were annotated by comparison to the IMGT database, then mined to construct TRBV allele profiles for each individual including, where detected, novel alleles not present in the ImMunoGeneTics (IMGT) database. Finally, TRBV allele profiles were subjected to principal component analysis and k-means clustering to identify TRBV allele haplotypes. Results: Clustering analysis revealed the presence of six major sets of coincident TRBV alleles, which we term haplotype groups. Allelic diversity varied markedly across haplotype groups, with approximately one third of the cohort showing limited TRBV allelic diversity and few uncommon alleles compared to members of other groups. Analysis revealed 37 putatively novel TRBV alleles that are absent from the IMGT database. Conclusion: We demonstrate a straightforward and cost-efficient method for TRBV haplotype analysis from long-amplicon TCRB sequencing data.
Book Review: African Philosophy and the Otherness of Albinism: White Skin, Black Race
Authors: Agada Ada
Published: September 2019

Book Title: African Philosophy and the Otherness of Albinism: White Skin, Black RaceBook Author: Elvis ImafidonPublisher: Routledge. Pages: Pp. xvi + 146. Year of Publication: 2019
Between theory and praxis: reply to Thaddeus Metz
Authors: Balogun Oladele Abiodun
Published: September 2019

In a Guest Lecture delivered by Professor Thaddeus Metz at a Colloquium organized in honour of my 50th birthday, he critically interrogated various aspects of my African philosophical scholarship with a particular focus on what I consider as the task of an African philosopher in the twenty-first century. Drawing on the existential and social problems in contemporary Africa (such as poverty, corruption, leadership problem, ethno-religious crisis, terrorism, refugee crisis, women’s right, amongst others), I have argued that African philosophy should be tailored towards ameliorating these problems as a way of making life meaningful. Metz’s striking criticism is that doing philosophy that does not necessary address existential and socio-political problems in Africa is worth taking seriously in African philosophy. He adds that the very idea of “meaningfulness constitutes a strong, competing reason,” to do philosophy for its own sake. In this article, I reply Metz, contending that his critique only differs in degree from the position I earlier defended but not in kind regarding the connection between theory and praxis. While we both agree on the imperativeness of theorizing in African philosophy, I argue further that African philosophy should go beyond this to solve the practical issues relevant to the advancement of humanity and the society.Keywords: African Philosophy, theory, Praxis, Thaddeus Metz
How relevant is African philosophy in Africa? A conversation with Oladele Balogun
Authors: Uduagwu Chukwueloka S.
Published: September 2019

In this short piece, I re-visit Oladele Balogun’s thesis that African philosophy, in social terms, can be relevant in Africa. I argue that in theorizing only on the social relevance of philosophy in Africa, Balogun fails to do justice to the entire breath of possible practical value which African philosophy can offer to the continent. To show this, I shall converse with Balogun on his idea of social relevance by exposing its strength and weakness. For Balogun, it is in the social aspect of African philosophy such as questioning the belief of a given society in order to change their habit of thought, criticizing their ideology and cultural values etc., that African philosophy’s relevance in Africa can be found. However, I contend that this does not fully capture other areas ofAfrican philosophy’s relevance such as the epistemic, ethical and spiritual relevance.Keywords: Philosophy, African Philosophy, Relevance, Balogun, Social, Epistemic, Spiritual
Ideology and Oladele Balogun’s perspective on parenthood and the ‘educated person’
Authors: Dasaolu Babajide Olugbenga
Published: September 2019

Enormous but undue accentuation has been given to the acquisition of certificates and degrees over competence in Africa. Not only does this expand the gulf between thought and praxis, it also implies the compromised course of knowledge production and reproduction in Africa. As a result of the vegetative and epileptic nature of the development agenda in Africa, there has been as many theories as there are scholars who are seeking theoretical solutions but with almost nothing tangible. Oladele Balogun has shown intellectual concerns over this too but with a plausible panacea. Taking traditional Yoruba culture as his cue, Balogun sees a connection between ‘parenthood’ and traditional Yoruba perception of the ‘educated person’ as crucial elements for human development drive in Africa. While I concede that these in themselves are necessary, I contest their sufficiency. Hence, I add a third category – Ideology.Keywords: Oladele Balogun, Parenthood, Pedagogy, Yoruba, Ideology
The methodological significance of Chimakonam’s Ezumezu logic
Authors: Ani Amara Esther
Published: September 2019

In this short piece, I argue that Chimakonam’s Ezumezu logic bears methodological significance for African scholarship as a whole. If method rests on logic, and method accounts for the distinction of one knowledge output from another, then the formulation of a system of logic which can creditably be described as African, even if simply in cultural inspiration, would provide for methodological liberation of African scholarship trapped in western knowledge hegemony since colonial times. First, I discuss in simple terms the theory of Ezumezu logic before showing its methodological significance.Keywords: Ezumezu, Logic, Chimakonam, African philosophy, Method
Mapeamento dos trabalhos publicados no GT 12 do SIPEM
Authors: Scarlassari Nathalia Tornisiello , Lopes Celi Espasandin
Published: September 2019

Este artigo se refere a um mapeamento dos trabalhos publicados nos anais do Grupo de Trabalho sobre Ensino de Probabilidade e Estatística (GT 12) do Seminário Internacional de Pesquisa em Educação Matemática (SIPEM) com o foco na Educação Estatística em um período de 15 anos, desde a primeira edição do evento. Procura-se mostrar como o evento foi evoluindo e se constituindo como um importante espaço de discussão entre os pesquisadores na área da Educação Matemática em todo o mundo. A análise dos trabalhos publicados teve como base metodológica os elementos discutidos por Fiorentini em seus estudos. Os resultados mostram que o GT12 foi se constituindo e se fortalecendo no decorrer dos anos, contando com uma maior participação de pesquisadores e publicações na área, porém, nas últimas edições do SIPEM esse número diminuiu significativamente.
Educação Estatística e a Base Nacional Comum Curricular: o incentivo aos projetos
Authors: Giordano Cassio Cristiano , Araújo José Ronaldo Alves , Coutinho Cileda De Queiroz e Silva
Published: September 2019

Este artigo discute as novas perspectivas para a Educação Estatística no Brasil a partir da publicação da Base Nacional Comum Curricular (BNCC). A abordagem metodológica é o estudo bibliográfico documental e o quadro teórico é a Análise Exploratória de Dados (AED), articulada com um modelo de abordagem por meio de projetos, norteando a análise sobre as dimensões cultural, social, educativa e política que permeiam as discussões sobre o ensino e a aprendizagem de Estatística na Educação Básica. Os resultados que emergem do estudo, guiado pela questão: Em relação aos Parâmetros Curriculares Nacionais – PCN, quais os possíveis avanços que a Base Nacional Comum Curricular oferece para o desenvolvimento da Educação Estatística brasileira? Esse artigo aponta possíveis avanços na BNCC, na medida em que amplia seu programa, dedicando à Probabilidade e Estatística e traz um detalhamento sobre as etapas do processo de produção científica, que visam atender as competências e habilidades a serem desenvolvidas pelos alunos. Identificamos que as orientações para articulação da Estatística e da Probabilidade com outras disciplinas direcionam para uma abordagem transdisciplinar, que conjecturamos ser uma possibilidade de uma abordagem por meio de projetos que pode favorecer a Educação Estatística. Embora tenhamos identificado, também, a superficialidade do documento acerca de alguns temas como a Probabilidade, o estímulo à produção de conhecimento por meio da pesquisa na abordagem por meio de projetos, desde as séries iniciais evidente no documento pode favorecer a discussão de temas menos evidentes em sua estrutura.
Ensino de estatística: estudantes de licenciatura em Pedagogia discutem em ambiente virtual a experiência de aplicar sequências didáticas
Authors: Figueiredo Auriluci Carvalho
Published: September 2019

Este estudo analisa como as sequências de ensino que envolvem conceitos de estatística básica podem contribuir na formação docente de estudantes de licenciatura em pedagogia. Para tanto, estudantes de um curso de licenciatura em pedagogia na modalidade a distância (alguns dos quais já atuavam como professores da educação básica ou já tinham contato com alunos durante estágio) aplicaram sequências de ensino que contemplavam conteúdos básicos da estatística a alunos das séries iniciais do Ensino Fundamental em escolas de educação básica. Os resultados foram analisados sob a ótica de Shulman, que categoriza os conhecimentos do professor ligados ao conteúdo matemático – dos quais destacamos os conhecimentos específicos e pedagógicos necessários à docência nas séries iniciais do Ensino Fundamental – e também sob o conceito de letramento estatístico de Gal, quanto a conteúdos estatísticos. Analisaram-se os relatos dos estudantes sobre suas experiências, disponibilizados em fórum virtual. A análise permitiu vislumbrar possibilidades de reflexão sobre a prática compartilhada entre alunos de licenciatura em pedagogia.
Educação Estatística no contexto da formação de professores dos anos iniciais do Ensino Fundamental: Mobilização dos Saberes de Conteúdo Estatístico
Authors: Ferreira da Silva Elvys Wagner , Souza Elizabeth Gomes
Published: September 2019

Este estudo investiga a formação dos futuros dos professores dos anos iniciais no que tange aos Saberes Docentes atinentes aos conteúdos estatísticos. Ancorada nos estudos de Shulman (1986), Tardif (2002) e Gauthier et. al. (1998) acerca dos Saberes Docentes coadunando com os referenciais teóricos relacionados à Educação Estatística a pesquisa investigou os saberes relacionados aos conteúdos matemáticos mobilizados na formação docente de professores dos anos iniciais do Ensino Fundamental acerca dos Saberes de Conteúdo Estatístico. O estudo foi desenvolvido com a participação de alunos do curso de Licenciatura Integrada em Educação em Ciências, Matemática e Linguagens/UFPA. O cenário do trabalho de campo se deu em dois contextos, a sala de aula do curso de formação inicial e a sala de aula dos anos iniciais. A composição analítica foi constituída por transcrições de áudios e vídeos referente as atividades desenvolvidas pelos licenciandos. Os Saberes Estatísticos mobilizados nos campos de pesquisa foram pautados na prática profissional de futuros professores relacionados à construção, leitura, interpretação de gráficos.
Modeling diurnal variation of surface PM2.5 concentration over East China with WRF-Chem: Impacts from boundary layer mixing and anthropogenic emission
Authors: Du Qiuyan , Zhao Chun , Zhang Mingshuai , Dong Xue , Chen Yu , Liu Zhen , Hu Zhiyuan , Zhang Qiang , Li Yubin , Yuan Renmin , Miao Shiguang
Published: September 2019

Abstract. Diurnal variation of surface PM2.5 concentration (diurnal PM2.5) could dramatically affect aerosol radiative and healthy impact, and can also well reflect the physical and chemical mechanisms of air pollution formation and evolution. So far, diurnal PM2.5 and its modeling capability over East China have not been investigated, and therefore, are examined in this study. Based on the observations, the normalized diurnal amplitude of surface PM2.5 concentrations averaged over East China is the weakest (~1.2) in winter, and reaches ~1.5 in other seasons. The diurnal PM2.5 shows the peak concentration during the night in spring and fall and during the daytime in summer. The simulated diurnal PM2.5 with WRF-Chem and its contributions from multiple physical and chemical processes are examined in the four seasons. The simulated diurnal PM2.5 with WRF-Chem is primarily controlled by planetary boundary layer (PBL) mixing and emission variations, and significantly overestimates the observations during the night. This modeling bias is likely primarily due to the inefficient PBL mixing of primary PM2.5 during the night. The simulated diurnal PM2.5 is sensitive to the PBL schemes and vertical layer configurations with WRF-Chem. The PBL mixing coefficient instead of PBL height is found as the critical factor determining the PBL mixing of pollutants in WRF-Chem. The increase of lower limit of PBL mixing coefficient during the night can significantly reduce the modeling biases in diurnal PM2.5 and also the mean concentrations, particularly at the major cities of East China. It can also reduce the modeling sensitivity to the PBL vertical layer configurations. The diurnal variation and injection height of anthropogenic emissions also play roles on simulating diurnal PM2.5, but the impact is relatively smaller than that from the PBL mixing. This study underscores that more efforts are needed to improve the boundary mixing process of pollutants in models with observations of PBL structure and mixing fluxes in addition to PBL height, in order to simulate reasonably the diurnal PM2.5 over East China. The diurnal variation and injection height of anthropogenic emissions are also necessary to be included to simulate the diurnal PM2.5 over East China.
Ozone Monitoring Instrument (OMI) Total Column Water Vapor version 4 validation and applications
Authors: Wang Huiqun , Souri Amir Hossein , González Abad Gonzalo , Liu Xiong , Chance Kelly
Published: September 2019

Abstract. Total column water vapor (TCWV) is important for the weather and climate.
TCWV is derived from the Ozone Monitoring Instrument (OMI) visible spectra
using the version 4.0 retrieval algorithm developed at the Smithsonian
Astrophysical Observatory. The algorithm uses a retrieval window between
432.0 and 466.5 nm and includes updates to reference spectra and water vapor
profiles. The retrieval window optimization results from the trade-offs
among competing factors. The OMI product is characterized by comparing against commonly used
reference datasets – global positioning system (GPS) network data over land
and Special Sensor Microwave Imager/Sounder (SSMIS) data over the oceans.
We examine how cloud fraction and cloud-top pressure affect the comparisons.
The results lead us to recommend filtering OMI data with a cloud fraction less
than f=0.05–0.25 and cloud-top pressure greater than 750 mb (or
stricter), in addition to the data quality flag, fitting root mean square (RMS) and TCWV range
check. Over land, for f=0.05, the overall mean of OMI–GPS is 0.32 mm
with a standard deviation (σ) of 5.2 mm; the smallest bias occurs
when TCWV = 10–20 mm, and the best regression line corresponds to f=0.25. Over the oceans, for f=0.05, the overall mean of OMI–SSMIS is
0.4 mm (1.1 mm) with σ=6.5 mm (6.8 mm) for January (July); the
smallest bias occurs when TCWV = 20–30 mm, and the best regression line
corresponds to f=0.15. For both land and the oceans, the difference
between OMI and the reference datasets is relatively large when TCWV is less
than 10 mm. The bias for the version 4.0 OMI TCWV is much smaller than that for version 3.0. As test applications of the version 4.0 OMI TCWV over a range of spatial and
temporal scales, we find prominent signals of the patterns associated with
El Niño and La Niña, the high humidity associated with a corn sweat
event, and the strong moisture band of an atmospheric river (AR). A data
assimilation experiment demonstrates that the OMI data can help improve the
Weather Research and Forecasting (WRF) model skill at simulating the
structure and intensity of the AR and the precipitation at the AR landfall.
Observation Preprocessing System for RC LACE (OPLACE)
Authors: Trojáková Alena , Mile Máté , Tudor Martina
Published: September 2019

Abstract. Meteorological observations are indispensable for the initialization of numerical weather prediction (NWP) forecast.
To enable the application of observations in NWP models a technical preprocessing is necessary.
Within the framework of RC LACE
(Regional Cooperation for Limited Area modelling in Central Europe) consortium,
a common observation preprocessing system (OPLACE) has been built up to deliver
meteorological observations in an appropriate format for data assimilation in the NWP system ALADIN (Air Limiteée Adaptation Dynamique Développment International)
The purpose of this paper is to document the OPLACE data sources, preprocessing steps
and means to make preprocessed observations available.
Furthermore, it describes an exchange of dense national surface synoptic measurements and high-resolution aircraft data in real-time among RC LACE national meteorological services (NMS) of Austria, Croatia, the Czech Republic, Hungary, Romania, Slovakia, and Slovenia.
Winter hydrometeorological extreme events modulated by
large scale atmospheric circulation in southern Ontario
Authors: Champagne Olivier , Leduc Martin , Coulibaly Paulin , Arain M. Altaf
Published: September 2019

Abstract. Extreme events are widely studied across the world because of their major implications for many aspects of society and especially floods. These events are generally studied in term of precipitation or temperature extreme indices that are often not adapted for regions affected by floods caused by snowmelt. Rain on Snow index has been widely used but it neglects rain only events which are expected to be more frequent in the future. In this study we identified a new winter compound index and assessed how large-scale atmospheric circulation controls the past and future evolution of these events in the Great Lakes region. The future evolution of this index was projected using temperature and precipitation from the Canadian Regional Climate Model Large Ensemble (CRCM5-LE). These climate data were used as input in PRMS hydrological model to simulate the future evolution of high flows in three watersheds in Southern Ontario. We also used five recurrent large-scale atmospheric circulation patterns in northeastern North America and identified how they control the past and future variability of the newly created index and high flows. The results show that daily precipitation higher than 10 mm and temperature higher than 5 °C were a necessary historical condition to produce high flows in these three watersheds. In the historical period, the occurrences of these heavy rain and warm events as well as high flows were associated to two main patterns characterized by high Z500 anomalies centred on eastern Great Lakes (HP) and the Atlantic Ocean (South). These hydrometeorological extreme events will be more frequent in the near future and will still be associated to the same atmospheric patterns. The future evolution of the index will be modulated by the internal variability of the climate system as higher Z500 in the east coast will amplify the increase in the number of events, especially the warm events. The relationship between the extreme weather index and high flows will be modified in the future as the snowpack reduces and rain becomes the main component of high flows generation. This study shows the values of CRCM5-LE dataset to simulate hydrometeorological extreme events in Eastern Canada and to better understand the uncertainties associated to internal variability of climate.
La Bauhaus en su centenario. Recreando la modernidad: el proyecto "Bauhaus Recreated"
Authors: Blanco Agüeira Silvia , Hervás y Heras Josenia
Published: September 2019

Abril de 1919 marca el comienzo de la escuela que reformuló el mundo del arte, la arquitectura y el diseño. Ese mes  el alumnado traspasó por primera vez las puertas de la sede de la Bauhaus en Weimar, decidido a desmarcarse de los modos pretéritos. Su revolución ha dejado una huella indiscutible en las disciplinas artísticas en cuanto a resultados, didáctica y armazón teórica. Con todo, no podemos olvidarnos de la contaminación mística derivada de criterios transgresores que destruían la idea de monumentalidad, así como el proceso de trabajo centrado en la copia. En este sentido, el trabajo de recreación fotográfica llevada a cabo en 2019 por los estudiantes y el profesorado del Centro de Estudios Superiores Universitarios de Galicia pretende servir de reflexión sobre la idoneidad y la vigencia de las metodologías docentes empleadas por la escuela alemana. Una centuria después, las veinticinco recreaciones de imágenes fotográficas en blanco y negro del proyecto Bauhaus Recreated, servirán para reivindicar lo mejor de su herencia.
"Social media", interacción y publicidad. Percepción de los formatos y contenidos en la Web 3.0
Authors: Rebollo Bueno Sara
Published: September 2019

El presente estudio tiene como objetivos principales obtener conclusiones sobre los contenidos y formatos publicitarios que ayudan a la atracción de los usuarios en el entorno de las redes sociales. Se analiza, además,  las actitudes que deben desempeñar los community managers, así como los factores que ayudan a crear interacción positiva por parte de los usuarios y seguidores de la marca hacia la misma. Para la consecución de estos objetivos, se ha realizado una metodología que cuenta con dos técnicas cualitativas: dos entrevistas, una de ellas a una docente e investigadora universitaria que estudia los sitios de redes sociales y otra a una community manager. Además, se han realizado seis focus groups a tres estratos diferentes de edad: el primero a personas que pertenecen a la Educación Secundaria Obligatoria, el segundo a Bachiller y, el último, a la universidad. Con esto se ha pretendido buscar una visión más amplia sobre opiniones y gustos en cuestión de social media, más allá de una sola generación.

Entre las principales conclusiones se encuentra la necesidad de que los anunciantes tengan una buena combinación entre los medios offline y online. Asimismo, la importancia de una buena creación de imagen de marca en la red es imprescindible en la web 3.0. Debe destacarse que esta investigación puede ser útil para futuros trabajos de carácter prescriptivo.
Factors influencing online health information seeking behavior among patients in Kwahu West Municipal, Nkawkaw, Ghana
Authors: Nangsangna Richmond Dery , Da-Costa Vroom Frances
Published: September 2019

Over the years, there has been a lot of transformation in the way health care is delivered and how individuals access health. Rapid growth in technology has been attributed to the advancement. The internet has played a key role in the delivery of health care and serves currently as a huge source of health information to individuals regardless of their location, language or time.This cross sectional study was conducted in the Kwahu West Municipal to determine factors influencing online health information seeking behaviors among patients. Three hospitals in the municipality were purposively selected for the study.  Outpatients attending these facilities were systematically selected. Data was collected using structured interviewer administered questionnaire.The study findings revealed that internet usage rate among patients was 85.8%. However, only 35.7% of patients ever used the internet to access health information. Sex, education and average monthly income were significant factors associated with online health information seeking. The study also showed that, computer and internet experience factors increased the probability of using internet for health information. After adjusting for confounding factors, being employed, earning higher income and owning computer were positive predictors of online health information seeking.It is important to explore other means of reducing the disparity in information access by improving skill and health literacy among the low social class who cannot afford internet ready devices. Health care providers should recognize that patients are using the internet for health information and should be prepared to assist and promote internet user skills among their patients.
The Study of Quantity Change and Composition Variations of Municipal Solid Waste in Sareyn as a Touristic City to Improve Municipal Solid Waste Management
Authors: Dehghani Rouhullah , Aalighadri Morteza , Mostafaii Gholam Reza , Hoseindoost Gholamreza , Takhtfiroozeh Seyedmahdi , Parhizkar Behrouz
Published: September 2019

Background and Objectives. Investigating the amount and composition of municipal solid waste components, as an essential information, is required to design, operate and optimize the municipal solid waste management systems. The ultimate goal of this research is to explore the
quantity change and physical variations of Sareyn municipal solid waste. Materials and Methods: This study was descriptive-cross sectional, conducted. Sampling was simple random and physical analysis was conducted according to the ASTM standard of MSW. Total of 28 samples were taken
from the trucks brought to the landfill site. Results: The average amount of MSW production in Sareyn is 19.1 tons each day while the highest amount in summer is 35.1 and the lowest in winter is 10.46. The density of Sareyn MSW in the autumn is in the highest value and in the summer
is in the lowest value equal to 386.1 and 349.1 kg / m3 respectively. The putrescible materials; 65.66 percent, have the highest amount, and the rest of the components consisting of plastics, rubbish and trash, paper and paperboard, wood, glass, textiles and metals, respectively.
Conclusion: According to the conditions of Sareyn touristic city and in order to provide the required health care, it is necessary to review and plan a proper Municipal Solid Waste Management System, increase the number of collections of MSW during peak periods, locate a new place for
landfill, and educate the citizens about the waste reduction and waste separation at the source.
Exploration of Biodrying Process for Mixed Municipal Solid Waste Management
Authors: Tom Asha P. , Pawels Renu , Haridas Ajit
Published: September 2019

The exploitation of self-heating nature of municipal solid waste for moisture reduction, through convective evaporation reaction called 'Biodrying Process' is promising for converting municipal solid waste with high moisture content in to a renewable energy substrate. The simultaneous
regulation of air flow rate and reactor feed volume in the pilot scale reactor system has brought about a significant change in the spatial and temporal distribution of self heating reaction. The constant volumetric air flow rate of 40 L/m and initial filled height of reactor matrix was 1.65
m have been maintained in the first experiment, while the air flow rate has been doubled to of 80 L/m and the filled height of reactor matrix was raised to 2.0 m in the second experiment. Weight reduction of 29.6 % and moisture loss of 24.6 % has been achieved at the end of 11 days of reaction
in the first study. A considerable improvement in biodrying process has been observed in the second experiment with a weight reduction of 40.7 % and moisture loss of 38.8 % achieved after 11 days of reaction. The accelerated evaporative cooling mechanism observed in the second experiment has
found to improve the biodrying process efficiency.
Assessment of Clinical Solid Waste Management in Selected Primary Healthcare Centres in Lagos Metropolis
Authors: Akanmu James O. , Ogunyomi Oladayo T.
Published: September 2019

This paper investigates clinical waste management in five selected primary health centres in Lagos Metropolis, Nigeria. The research used quantitative and qualitative techniques to evaluate data on clinical waste sources, types, rate of generation, collection and transportation and
disposal at the health centres. The average generation rate of clinical waste generated was found to be 6.7kg/day, 20.3kg/day and 56.4kg/day at Adeniyi Jones, Ajuwon and Aregbesola primary health centres respectively while average daily waste generated per patient were found to be 0.11kg/patient/day,
0.20kg/patient/day, 0.26kg/patient/day, 0.45kg/patient/day and 0.69kg/patient/day at Ikeja Phc, Adeniyi Jones Phc, Ajuwon Phc, Ikosi-Ketu Phc and Aregbesola Phc respectively. Segregations of waste at generation source were properly done however, sometimes; they were haphazardly thrown into
a common dustbin at the point of transporting to the disposal site. The paper concludes that the collection and transportation of the wastes are fairly effective and required improvement through training of the personnel and regular collection of wastes generated to avoid infections and outbreak
of epidemics.