The mating system of the true fruit flyBactrocera tryoniand its sister-species, Bactrocera neohumeralis

The frugivorous “true” fruit fly, Bactrocera tryoni (Queensland fruit fly), is presumed to have a nonresourced-based lek mating system. This is largely untested, and contrary data exists to suggest Bactrocera tryoni may have a resource-based mating system focused on fruiting host plants. We tested the mating system of Bactrocera tryoni, and its close sibling Bactrocera neohumeralis, in large field cages using laboratory reared flies. We used observational experiments that allowed us to determine if: (i) mating pairs were aggregated or nonaggregated; (ii) mating system was resource or nonresource based; (iii) flies utilized possible landmarks (tall trees over short) as mate-rendezvous sites; and (iv) males called females from male-dominated leks. We recorded nearly 250 Bactrocera tryoni mating pairs across all experiments, revealing that: (i) mating pairs were aggregated; (ii) mating nearly always occurred in tall trees over short; (iii) mating was nonresource based; and (iv) that males and females arrived at the mate-rendezvous site together with no evidence that males preceded females. Bactrocera neohumeralis copulations were much more infrequent (only 30 mating pairs in total), but for those pairs there was a similar preference for tall trees and no evidence of a resource-based mating system. Some aspects of Bactrocera tryoni mating behavior align with theoretical expectations of a lekking system, but others do not. Until evidence for unequivocal female choice can be provided (as predicted under a true lek), the mating system of Bactrocera tryoni is best described as a nonresource based, aggregation system for which we also have evidence that land-marking may be involved.

Teaching Sight-Reading to Undergraduate Choral Ensemble Singers: Lessons from Successful Learners

This study was designed to investigate professional choral singers’ training, perceptions on the importance of sight-reading skill in their work, and thoughts on effective pedagogy for teaching sight-reading to undergraduate choral ensemble singers. Participants in this study (N=48) included self-selected professional singers and choral conductors from the Summer 2015 Oregon Bach Festival’s Berwick Chorus and conducting Master Class. Data were gathered from questionnaire responses and audio recorded focus group sessions. Focus group data showed that the majority of participants developed proficiency in their sight-reading skills from instrumental study, aural skills classes, and through on-the-job training at a church job or other professional choral singing employment. While participants brought up a number of important job skills, sightreading was listed as perhaps the single most important skill that a professional choral singer could develop. When reading music during the rehearsal process, the data revealed two main strategies that professional singers used to interpret the pitches in their musical line: an intervallic approach and a harmonic approach. Participants marked their scores systematically to identify problem spots and leave reminders to aid with future readings, such as marking intervals, solfege syllables, or rhythmic counts. Participants reported using a variety of skills other than score marking to try to accurately find their pitches, such as looking at other vocal or instrumental lines, looking ahead, and using knowledge about a musical style or time period to make more intuitive “guesses” when sight-reading. Participants described using additional approaches when sight-reading in an audition situation, including scanning for anchors or anomalies and positive self-talk. Singers learned these sight-reading techniques from a variety of sources. Participants had many different ideas about how best to teach sight-reading in the undergraduate choral ensemble rehearsal. The top response was that sight-reading needed to be practiced consistently in order for students to improve. Other responses included developing personal accountability, empowering students, combining different teaching methods, and discussing real-life applications of becoming strong sight-readers. There was discussion about the ultimate purpose of choir at the university level and whether it is to teach musicianship skills or produce excellent performances.

Poéticas ficcionais e percursos imaginários em City of glass de Paul Auster

Nas três narrativas que constituem The New York Trilogy – City of Glass, Ghosts e The Locked Room – Paul Auster emprega e desconstrói os elementos convencionais do romance policial, elaborando uma investigação recorrente da natureza, função e significado da linguagem, mas também da solidão, do encerramento e da problemática da identidade. A produção narrativa de Auster evoca fantasmas logocêntricos tradicionais (como a presença, a realidade e a verdade), que fazem eco do princípio de indissolubilidade entre palavra e significado, apenas para lograr esta identidade através de uma orientação textual para a marcação da ficcionalidade e consequente reforço dos efeitos de significação ilusórios. Auster altera os mecanismos logrando as expectativas do leitor em relação ao epílogo e à transparência textual, que um pacto mimético faria pressupor. O espaço vazio resultante confere ao texto uma liberdade plurissignificativa que dispersa todas as certezas e veicula o poder da criação do caos. Sob a aparência de fluência narrativa, a escrita de Paul Auster esconde uma subversão das premissas básicas da literatura realista e dos signos referenciais, numa poética auto-reflexiva ficcionalizada sobre a estruturação de universos imaginários.

Conhecimentos sobre o HPV e cancro do colo do útero nos adolescentes

O Cancro do Colo do Útero (CCU) é uma das principais causas de morte por neoplasia nas mulheres, em todo o mundo. A principal etiologia do CCU é a infeção persistente pelas estirpes oncogénicas do Vírus do Papiloma Humano (HPV) (Ferreira, 2013). Esta temática é de grande interesse para a Saúde Pública por se tratar de uma infeção que na maioria dos casos se apresenta de forma assintomática, afetando ambos os sexos (Leite, Lisboa, & Azevedo, 2011). O presente trabalho tem como objetivos avaliar os conhecimentos dos alunos do Ensino Secundário do Agrupamento de escolas Emidio Garcia, em Bragança, sobre o HPV e CCU e conhecer os dados referentes à cobertura vacinal da população do Concelho de Bragança, relativamente à vacina do HPV no ano de 2014. O estudo efetuado é de tipologia observacional-descritivo e correlacional, de paradigma quantitativo através de um processo sistemático de recolha de dados, num plano transversal. Numa amostra de 196 alunos do ensino secundário do Agrupamento de escolas Emídio Garcia em Bragança, com base num erro amostral de 5%, com um nível de confiança de fidelidade de 95%, classificada como amostra não probabilística, acidental/ocasional. O instrumento de recolha de dados utilizado foi um questionário da autoria de Diana Ramada e Rui Medeiros, validado e devidamente autorizado. As principais conclusões do estudo relativamente aos conhecimentos sobre esta temática por parte dos alunos, revelam que o maior conhecimento reside nos mais jovens com idades compreendidas entre os 15 e 16 anos em relação aos alunos de 18 e 19 anos. São alunos que estão bem informados no que diz respeito às manifestações e aos fatores de risco da infeção por HPV, conscientes de que afeta tanto o sexo feminino com o masculino e que os indivíduos do sexo masculino podem ser portadores assintomáticos. Reconhecem que a infeção pelo vírus do HPV é curável e que a persistência desta infeção pode provocar CCU. Existe uma lacuna relativamente ao HPV ser o agente mais comum das IST, em que 93,4% dos inquiridos respondeu ser o HIV. Revelam desconhecimento relativamente à localização e modos de transmissão deste vírus. Manifestaram interesse por adquirir e aprofundar conhecimentos, assinalando a escola e os profissionais de saúde como centro de informação. Existe, no entanto, um aspeto positivo a concluir, ao se verificar que a vacinação tem uma grande adesão e que é cumprido o esperado pelo Plano Nacional de Vacinação, diminuindo o risco de infeção por HPV e em consequência reduzindo a incidência do CCU, por infeção persistente de HPV.

Pomacanthus maculosus (Forsskål, 1775)

This is one of the largest species of angelfish reaching almost 20 inches (50cm) in length. As an adult it has a violet blue body with a large yellow blotch on the side that some say resembles the continent of Africa. As a juvenile it is similar in appearance (and easily confused with) other young Pomacanthus, especially the Blue-ring Angelfish P. annularis. But as its color pattern begins to metamorphosis, the sub-adult begins to look very much like the Arabian Angelfish P. asfur. It will have a similar looking vertical yellow bar on its body, but lack the bright yellow tailfin of the Arabian Angel. Its yellow marking develops as a characteristic "yellowband", finally becoming more prominent and blotch-like as the fish ages. Hence this fish is also known by a number of descriptive common names including Yellowbar Angelfish, Half Moon Angelfish, Map Angelfish, Yellow-Band Angelfish, Yellow-blotch Angelfish, Blue-moon Angelfish, and more.

Propuesta de un modelo de evaluación bidimensional en Moodle

El modelo de evaluación bidimensional MEB en la educación superior, propuesto en este trabajo mide el conocimiento de estudiantes versus grado de certeza. El análisis de estas dos dimensiones permite al profesor determinar áreas de conocimiento a profundizar con sus estudiantes. La investigación fue descriptiva y correlacional, fueron aplicados métodos científico e inductivo. Las técnicas utilizadas fueron cuestionarios y análisis estadístico y recursos técnicos fueron: sistema de gestión de aprendizaje Moodle, software para análisis matemático MATLAB, EXCEL, laboratorios de la Facultad de Informática y Electrónica (FIE) de la Escuela Superior Politécnica de Chimborazo (ESPOCH), institución donde se llevó a cabo el estudio. El MEB propone la aplicación de cuestionarios de selección múltiple con el mecanismo CBM (Certainty based marking - Marcado basado en la certeza), sobre un aula virtual creada en el sistema Moodle. CBM permite medir por cada pregunta de un cuestionario las dimensiones conocimiento y certeza.

Governing the transition to higher levels of education and differences between achievement and school grades by gender

The author will explore the performance of boys and girls in external examinations in Slovenia at the beginning of upper secondary and tertiary education. These are critical points in students’ educational career at which he/she has to choose a school/university. Since both transitions are managed centrally by appropriate authorities, this is also a question of Educational Governance. Transitions between levels of education should, above all, assure fairness in selection procedures. At the point of transition to upper secondary schools we will explore differences between students’ achievements in various school subjects tested at the national assessment of knowledge (NA), and their school grades by gender. Since only school grades are used as admission criteria to upper secondary schools, this comparison of school grades with external and more objective measure of students’ achievement will show possible bias. In Slovenia admission to tertiary education usually consists of (externally assessed) Matura results and school grades in the last two years of upper secondary school. The author will compare the effects of both most commonly used measures of academic achievement on admission in view of gender differences. Study courses where selection procedure was actually applied will be of specific interest since they can show signs of (un)fairness. Results show signs of bias and build case for better Educational Governance. (DIPF/Orig.)

The problem posed by exam choice on the comparability of results in the Finnish matriculation examination

The article focuses on the upper secondary matriculation examination in Finland as a school leaving and university entrance examination. The presented research addresses the question of whether increased choice of the subject-specific examinations has the potential to undermine the comparability of examination results and to direct students’ choices not only in the examination but already beforehand at school. The authors refer to Finland’s tradition of more than 160 years of a national examination connecting the academic track of upper secondary schools with universities. The authors explain the Finnish system by describing the adoption of a course-based (vs. class- or year-based) curriculum for the three-year upper secondary education and the subsequent reforms in the matriculation examination. This increases students’ choices considerably with regard to the subject-specific exams included in the examination (a minimum of four). As a result, high-achieving students compete against each other in the more demanding subjects while the less able share the same normal distribution of grades in the less demanding subjects. As a consequence, students tend to strategic exam-planning, which in turn affects their study choices at school, often to the detriment of the more demanding subjects and, subsequently, of students’ career opportunities, endangering the traditional national objective of an all-round pre-academic upper secondary education. This contribution provides an overview of Finnish upper secondary education and of the matriculation examination (cf. Klein, 2013) while studying three separate but related issues by using data from several years of Finnish matriculation results: the relation of the matriculation examination and the curriculum; the problems of comparability vis-à-vis university entry due to the increased choice within the examination; the relations between students’ examination choices and their course selection and achievement during upper secondary school. (DIPF/Orig.)

Golpe de Estado no século XXI : o caso de Honduras (2009) e a recomposição hegemônica neoliberal

Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Sociais, Centro de Pesquisa e Pós-Graduação sobre as América, Programa de Pós-Graduação em Estudos Comparados sobre as Américas, 2016.

Oitenta anos de produção e comercialização dos vinhos do Dão

Mestrado em Economia

Metacromasia para identificação de basófilos sanguíneos em surubim híbrido: contribuição metodológica

Padua S.B. & Ishikawa M.M. [Metachromasia for blood basophils identification in hybrid surubim catfish: methodological contribution]. Metacromasia para identificacao de basofilos sanguineos em surubim hibrido: contribuicao metodologica. Revista Brasileira de Medicina Veterinaria, 33(3):147-150, 2011. Centro de Aquicultura da Unesp/Jaboticabal Rod. Paulo Donato Castellane, s/n Bairro Rural, Jaboticabal, 14884-900, SP. Brasil. E-mail: santiagopadua@live.comDifferent protocols of fixation and hydrolysis of blood smears of hybrid surubim catfish for metachromasia to marking blood basophils were evaluated. For this reason, methanol, acid-alcohol and formalin vapor were tested as fixatives. For hydrolysis of blood smears, HCl, citric acid and 2-Mercaptoethanol + Urea + NaCl solutions was evaluated. After procedures, the blood smears was stained with toluidine blue (0.025%) diluted in McIlvaine buffer (pH 4). The different protocols for fixation and hydrolysis of blood smears for metachromasia influenced the quality of the reaction. Hydrolysis with 2-Mercaptoethanol + Urea + NaCl solutions provided negative results when using methanol and acid-alcohol as fixatives. The fixation with acid-alcohol associated with citric acid hydrolysis provides highest quality reason.

Design, Fabrication, and Mechanical Property Analysis of 3D Nanoarchitected Materials

Recent developments in micro- and nanoscale 3D fabrication techniques have enabled the creation of materials with a controllable nanoarchitecture that can have structural features spanning 5 orders of magnitude from tens of nanometers to millimeters. These fabrication methods in conjunction with nanomaterial processing techniques permit a nearly unbounded design space through which new combinations of nanomaterials and architecture can be realized. In the course of this work, we designed, fabricated, and mechanically analyzed a wide range of nanoarchitected materials in the form of nanolattices made from polymer, composite, and hollow ceramic beams. Using a combination of two-photon lithography and atomic layer deposition, we fabricated samples with periodic and hierarchical architectures spanning densities over 4 orders of magnitude from ρ=0.3-300kg/m³ and with features as small as 5nm. Uniaxial compression and cyclic loading tests performed on different nanolattice topologies revealed a range of novel mechanical properties: the constituent nanoceramics used here have size-enhanced strengths that approach the theoretical limit of materials strength; hollow aluminum oxide (Al₂O₃) nanolattices exhibited ductile-like deformation and recovered nearly completely after compression to 50% strain when their wall thicknesses were reduced below 20nm due to the activation of shell buckling; hierarchical nanolattices exhibited enhanced recoverability and a near linear scaling of strength and stiffness with relative density, with E∝ρ^1.04 and σy∝ρ^1.17 for hollow Al₂O₃ samples; periodic rigid and non-rigid nanolattice topologies were tested and showed a nearly uniform scaling of strength and stiffness with relative density, marking a significant deviation from traditional theories on “bending” and “stretching” dominated cellular solids; and the mechanical behavior across all topologies was highly tunable and was observed to strongly correlate with the slenderness λ and the wall thickness-to-radius ratio t/a of the beams. These results demonstrate the potential of nanoarchitected materials to create new highly tunable mechanical metamaterials with previously unattainable properties.

A rede de marcação e recaptura: o caso de borboletas do gênero heliconius

(The Mark and Recapture Network: a Heliconius case study). The current pace of habitat destruction, especially in tropical landscapes, has increased the need for understanding minimum patch requirements and patch distance as tools for conserving species in forest remnants. Mark recapture and tagging studies have been instrumental in providing parameters for functional models. Because of their popularity, ease of manipulation and well known biology, butterflies have become model in studies of spatial structure. Yet, most studies on butterflies movement have focused on temperate species that live in open habitats, in which forest patches are barrier to movement. This study aimed to view and review data from mark-recapture as a network in two species of butterfly (Heliconius erato and Heliconius melpomene). A work of marking and recapture of the species was carried out in an Atlantic forest reserve located about 20km from the city of Natal (RN). Mark recapture studies were conducted in 3 weekly visits during January-February and July-August in 2007 and 2008. Captures were more common in two sections of the dirt road, with minimal collection in the forest trail. The spatial spread of captures was similar in the two species. Yet, distances between recaptures seem to be greater for Heliconius erato than for Heliconius melpomene. In addition, the erato network is more disconnected, suggesting that this specie has shorter traveling patches. Moving on to the network, both species have similar number of links (N) and unweighed vertices (L). However, melpomene has a weighed network 50% more connections than erato. These network metrics suggest that erato has more compartmentalized network and restricted movement than melpomene. Thus, erato has a larger number of disconnected components, nC, in the network, and a smaller network diameter. The frequency distribution of network connectivity for both species was better explained by a Power-law than by a random, Poissom distribution, showing that the Power-law provides a better fit than the Poisson for both species. Moreover, the Powerlaw erato is much better adjusted than in melpomene, which should be linked to the small movements that erato makes in the network

The presence of three Portuguese TV news channels (RTP3, SIC NOTÍCIAS, and TVI24) on facebook

The growing popularity of social networks, and their impact on the daily lives of consumers, contributed to news organizations marking their presence on different online platforms. In the case of Facebook, a social network that began as a personal space, it has gradually transformed into a content-sharing space (Oeldorf-Hirsch & Sundar, 2015). Nowadays, Facebook is the second most viewed website in Portugal (Alexa, 2016), and therefore, it has become crucial for Portuguese news agencies to be present on this social network. Although television continues to be the main information source in Portugal, social networks, and specifically Facebook, are increasingly important in news consumption by users (ERC, 2015). This new way of news dissemination, as well as the proliferation that these contents reach in social networks, led to news agencies exploiting these new channels, both to attract new audiences, and to redirect users to their own websites (Castillo, El-Haddad, Pfeffer, & Stempeck, 2014). Thus, it is important to understand how, and what kind of content these agencies put on their Facebook channels, as well as the strategies they use to share these same contents. This study aims to understand how the main news channels of Portuguese TV (RTP3, SIC Notícias, and TVI24) manage and use the social network Facebook to share news contents. To this end, the authors collected quantitative data of all posts placed on Facebook between February 8 and February 14 2016. Approximately 1063 posts were collected and analysed from the three Facebook pages. The results indicate that two of the three channels extensively used their Facebook pages to share and target content to their official websites. Regarding the news sources and type of media used, the three Portuguese TV news channels use similar strategies. However, in what concerns the main themes and quantity of messages per day, as well as the level of redundancy of information, the three channels manage their pages differently.

The presence of three portuguese TV news channels (RTP3, SIC Notícias, and TVI24) on Facebook

The growing popularity of social networks, and their impact on the daily lives of consumers, contributed to news organizations marking their presence on different online platforms. In the case of Facebook, a social network that began as a personal space, it has gradually transformed into a content-sharing space (Oeldorf-Hirsch & Sundar, 2015). Nowadays, Facebook is the second most viewed website in Portugal (Alexa, 2016), and therefore, it has become crucial for Portuguese news agencies to be present on this social network. Although television continues to be the main information source in Portugal, social networks, and specifically Facebook, are increasingly important in news consumption by users (ERC, 2015). This new way of news dissemination, as well as the proliferation that these contents reach in social networks, led to news agencies exploiting these new channels, both to attract new audiences, and to redirect users to their own websites (Castillo, El-Haddad, Pfeffer, & Stempeck, 2014). Thus, it is important to understand how, and what kind of content these agencies put on their Facebook channels, as well as the strategies they use to share these same contents. This study aims to understand how the main news channels of Portuguese TV (RTP3, SIC Notícias, and TVI24) manage and use the social network Facebook to share news contents. To this end, the authors collected quantitative data of all posts placed on Facebook between February 8 and February 14 2016. Approximately 1063 posts were collected and analysed from the three Facebook pages. The results indicate that two of the three channels extensively used their Facebook pages to share and target content to their official websites. Regarding the news sources and type of media used, the three Portuguese TV news channels use similar strategies. However, in what concerns the main thematic and quantity of messages per day, as well as the level of redundancy of information, the three channels operate their pages differently.