176 research outputs found
The importance of having data-sets.
No full textMuch scientific research is based on the gathering and analysis of measurement data. Scientific data-sets are, at least, intermediate results in many scientific research projects. For some time data-sets weren’t even published and even if they were published it was mostly as a (not re-usable) by-product of the publication. But an interesting phenomenon might be observed here: data-sets (often in combination with models and parameters) are becoming more important themselves and can sometimes be seen as the primary intellectual output of the research. Publishing and preserving data-sets should therefore seriously be considered. This will especially be the case if the data cannot be reproduced (as they result from unique events) and will be necessary in the future for longitudinal research or to test or check future insights
Higher education students’ perceptions of positive and negative effects of social networking in Portugal
No full textThe aim of this study was to examine students’ perceptions of social networking in Portugal. One hundred and thirty (N = 130) students were surveyed online. Factorial analyses have been performed with results showing that social networking were had positive impacts in terms of being a tool for study or work independently and support personal or professional network, a Teamwork building instrument; contributing to being a “Green” user, and gaining updated information and knowledge. On the negative side, social networks impede to traditional information source, are an inhibitor to be more sociable and in-person contact and leads to sedentary lifestyle, trigger anxiety and losing interest, are an inhibitor on developing literacy skills, reducing further thinking capability and unable to focus on one matter for longer time, raise increasing privacy, security and intellectual property concerns, and lastly, are an inhibitor to accomplish higher priority as scheduled
El reporte de laboratorio de física como indicador de la adquisición de la competencia de comunicación
No full textTesis (Maestría en Física Educativa), Instituto Politécnico Nacional, CICATA, Unidad Legaria, 2015, 1 archivo PDF, (123 páginas). tesis.ipn.m
Bridge load testing and monitoring using conventional and image-based measurement strategies
No full textSubmission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01The student, Isaias Colombani, accepted the attached license on 2021-12-09 at 17:00.The student, Isaias Colombani, submitted this Thesis for approval on 2021-12-09 at 17:40.This Thesis was approved for publication on 2021-12-10 at 10:04.DSpace SAF Submission Ingestion Package generated from Vireo submission #17443 on 2022-04-06 at 17:18:07Made available in DSpace on 2022-04-29T21:47:48Z (GMT). No. of bitstreams: 2
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Previous issue date: 2021-12-10Embargo set by: Seth Robbins for item 123395
Lift date: 2024-04-29T21:47:53Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemAuthor requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I OnlyBridge load rating analysis has been used for decades to assess the safe load-carrying capacity of bridges in the United States. As time progressed, bridges that were rated using the American Association of State Highway and Transportation Officials (AASHTO) analytical load rating methods began to show lower load capacities than those that the bridges have proven to carry through load testing alternatives. This is especially true for reinforced concrete (RC) slab bridges which have complicated load path distributions and often benefit from load tests. This has resulted in unnecessary roadway restrictions, bridge closures, and other inconveniences to the communities that rely on these bridges for daily commute. Consequently, to provide better accuracy, the AASHTO Manual for Bridge Evaluation (MBE) offers the option of conducting load rating using field testing as an alternative to analytical computing rating factors for bridges.
In this study, diagnostic and proof load field tests are performed on two RC slab bridges to study the feasibility and constraints of using bridge load testing as a load rating method. AASHTO MBE and Effective Strip Width (EW) load rating approaches are used to compare results with AASHTO analytical load rating procedures. The results demonstrate the advantages to load testing over less reliable analytical load rating procedures. To reduce the complexity, time, and cost associated with instrumenting bridges for load testing, the study explores the feasibility of performing load tests using image-based techniques. Images of loaded bridges captured using consumer-grade cameras are used to monitor the displacement of the bridges during testing. The results from the field and laboratory studies show compelling results when compared to conventional Linear Variable Differential Transformer (LVDT) sensors. Furthermore, the studies show that image-based bridge monitoring techniques have great potential in conducting quick and cost-effective field-based load ratings of bridges. The research also investigates alternative approaches to field tests for structural monitoring of bridges. A satellite image-based technique is explored to evaluate the potential of this technology to measure small displacements in bridges. Moreover, the technique is applied to three different bridges to validate the approach and the simplicity of its application for bridge monitoring. The results show promising potential in the method to be used as a structural health monitoring strategy for bridges
Lima Barreto, entre rumores e imagens : a circulação social da obra Recordações do escrivão Isaias Caminha
No full textOrientador: Prof. Dr. Alexandro Dantas TrindadeDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Humanas, Programa de Pós-Graduação em Sociologia. Defesa: Curitiba, 31/03/2016Inclui referências : f. 144-151Resumo: Na presente dissertação realizamos um estudo de caso com o objetivo de refletir acerca do processo de circulação social de uma obra literária no inicio do século XX, tomando como objeto de análise a recepção critica do romance Recordações do Escrivão Isaias Caminha, de Lima Barreto (1881-1922). Tanto a construção de nosso objeto de pesquisa quanto à escolha do romance em questão foram realizadas no decorrer do desenvolvimento de nossa pesquisa empírica, antes direcionada a pesquisar as relações entre ciência e literatura na vida do referido escritor. Ocorre que o interesse sobre o caso do Recordações surgiu quando começamos a investigar o processo de inserção intelectual de Lima Barreto e a sua relação com a maneira pelas quais suas obras foram recebidas por seus críticos contemporâneos. Nesse sentido, a recepção crítica do Recordações nos exigiu especial atenção: primeiro, por se tratar da obra com o qual Lima Barreto escolheu lançar a sua carreira de escritor; segundo, porque essa tentativa de se lançar e se afirmar foram constituídas em três momentos correspondentes às publicações da obra (1907, 1909, 1917); terceiro, pelo fato de a última edição da obra ter sido custeada pelo autor, no que nos parece ter se constituído numa reação do autor à maneira como seu romance fora lido e apropriado por seus intérpretes contemporâneos. Nesse sentido, a questão principal do nosso interesse de pesquisa gira do torno do processo de negociação tenso entre produtores culturais que ocupavam posições diferentes no mundo das letras, e as correspondentes edições da obra em questão. Lima Barreto não se eximiu em participar das diferentes etapas desse processo de negociação e das interlocuções com distintos agentes, e as estratégias exercidas por ele em torno da disputa pela valoração de sua obra assume um caráter heurístico para a compreensão daquele processo. Recorremos a fontes primárias como diários, correspondências, crônicas e obras do escritor, bem como a periódicos da época, no intuito de recapitular as etapas daquela negociação. Por fim, focamos as agências dos diversos produtores culturais envolvidos naquele processo e, em especial, a de Lima Barreto, com o objetivo de compreender em que medida o senso público de uma obra é construído no dissenso sobre o tipo de valoração (social, política, literária) possível de lhe ser atribuído. Palavras-Chave: Lima Barreto; Recordações do Escrivão Isaias Caminha; circulação de social de obras; sociologia do conhecimento.Abstract: In this dissertation we conducted a case study in order to reflect on the social movement process of a literary work in the early twentieth century, taking as object the reception criticizes the novel Memories Registrar Isaias Caminha, Lima Barreto (1881 -1922). Both the construction of our object of research on the choice of the novel in question were carried out during the development of our empirical research before directed to research the relationship between science and literature in the life of that writer. It happens that the interest on the case of Memories came when we began to investigate the process of intellectual insertion of Lima Barreto and its relation to the way in which his works were received by his contemporary critics. In this sense, the critical reception of Memories in required special attention: First, because it is the work with which Lima Barreto chose to launch his writing career; second, because this attempt to launch and state were established in three corresponding to the work publications times (1907, 1909, 1917); third, because the last edition of the work was funded by the author, as it seems to have made an author's reaction to the way his novel had been read and suitable for its contemporary interpreters. In this sense, the main question of our research interest revolves around the tense negotiation process between cultural producers who held different positions in the world of letters, and the corresponding editions of the work in question. Lima Barreto not exempted to participate in the different stages of this process of negotiation and dialogues with different agents, and strategies exercised by him around the dispute over the valuation of his work takes a heuristic character for understanding that process. We use primary sources such as diaries, correspondence, and chronic writer's works as well as the periodicals of the time in order to recapitulate the stages of that negotiation. Finally, we focus on the agencies of the various cultural producers involved in that process and in particular the Lima Barreto, in order to understand to what extent the public sense of a work is built on dissent on the type of valuation (social, polítical , literary) possible to be awarded. Keywords: Lima Barreto ; Memories Registrar of Isaias Caminha; social circulation of works; sociology of knowledge
Estimação de parâmetros genéticos de caracteres do pendão em milho (Zea mays L.) e perspectivas de melhoramento
No full textO presente trabalho tem por objetivo o estudo de caracteres do pendão de milho (peso, número de ramificações e comprimento) e suas relações com a eficiência da planta na produção de grãos. O material utilizado compreende progênies de meios irmãos de cada uma das seguintes populações: Composto Dentado Branco, Composto Flint Branco e variedade Centralmex. Tais progênies foram avaliadas em látices 10 x 10 com três repetições, no ano agrícola 1974/75. Após decorrido o período mais intenso do processo normal de polinização, foi coletada uma amostra de pendões de cada parcela, sendo estes avaliados quanto aos seguintes caracteres: peso, número de ramificações primárias e comprimento. Posteriormente foram obtidos os dados de produção de grãos. Os dados experimentais foram submetidos às análises de variância e covariância. A partir destas foram estimados os coeficientes de herdabilidade para os quatro caracteres, os coeficientes de correlação genética aditiva e fenotípica para algumas combinações destes e os progressos esperados e respostas correlacionadas esperadas com seleção. Os coeficientes de herdabilidade estimados para os caracteres do pendão foram relativamente altos, em média, 36,1%, 45,8% e 28,8%, respectivamente para o peso, número de ramificações e comprimento. Tais estimativas indicam que a seleção fenotípica pode ser eficiente no melhoramento de tais caracteres. As estimativas das correlações genéticas aditivas indicam que o peso do pendão e a produção de grãos são negativamente correlacionados (rA = -0,143), bem como o número de ramificações do pendão e a produção de grãos (rA = -0,650). Entretanto, as estimativas das correlações genéticas aditivas parciais indicam que o caráter primário negativamente correlacionado à produção de grãos é o número de ramificações, e que o peso do pendão apresenta correlação negativa com a produção de grãos pelo fato de ser positivamente correlacionado ao número de ramificações (rA = +0,477). Os progressos esperados e as respostas correlacionadas esperadas com seleção indicam que a seleção visando à diminuição do número de ramificações do pendão deve acarretar aumentos substanciais na produção de grãos. A possibilidade de se avaliar visualmente o número de ramificações no campo, sem necessidade de remoção do pendão, e a herdabilidade relativamente alta desse caráter, tornam o processo seletivo relativamente mais simples.The objective of the present research was the study of tassel characters (weight, lenght and number of branches) in maize and their relationship with plant efficiency for grain yield. Material used comprises half sib families from each of the following populations: Composto Dentado Branco, Composto Flint Branco and variety Centralmex. Such progenies were evaluated in yield trials in 10 x 10 lattices with three replications in 1974/75. After the most intense phase of the pollination period, a sample of tassels was collected from each plot and evaluated for the following traits: weight, number of first branches and lenght. At harvest time, data were taken for grain yield. Analysis of variance and covariance were performed and the following parameters were estimated: coefficient of heritability for the individual traits and additive genetic correlation and phenotypic correlation for combinations of the studied traits. Direct and correlated response from selection were calculated using variance and covariance estimates. Estimates of heritability coefficients were of high magnitude, i.e., 36.1%, 45,8% and 28.8% on the average for weight, number of branches and lenght of tassel, respectively. The relatively high values for heritabilities indicate that phenotypic selection can be quite effective for such characters. Estimates of additive genetic correlation showed to be negative for tassel weight and grain yield (rA -0.143) and for number of branches in the tassel and grain yield (rA -0.650). However, estimates of partial additive genetic correlation indicated that number of branches is primarily correlated with grain yield and that the negative correlation between tassel weight and grain yield results from the positive correlation between number of branches and tassel weight (rA = 0.477). Direct and correlated response from selection indicates that selection toward the decrease of number of branches in the tassel probably leads to significant increase in grain yield, Such a selection can be easily and effectively performed in the field because this trait can be evaluated visually without the need of tassel remotion, and also due to its relatively high heritability
Business analytics education: a literature review and implications
No full textThe objective of this study is to conduct a comprehensive review of existing academic literature on "business analytics education”. This review will facilitate the identification of shortcomings, needs, challenges, and the current status of analytics education within business schools. As known, the proliferation of technology has greatly simplified data collection processes, leading to a significant surge in the volume of data within the contemporary business landscape. This abundant data reservoir presents organizations with opportunities to derive substantial value. Consequently, over the past two decades, there has been an exponential increase in the demand for business analytics experts which led business schools to open analytics-related programs. Upon analysis of the literature utilizing the key term "business analytics education" it becomes evident that this subject has received substantial attention and thorough discussion within the top academic business journals. However, given the rapid development of the domain, there is a pressing need for further research, particularly in the design of contemporary curricula and the utilization of novel teaching methodologies
Technological Citizenship in the Digital Age
No full textThis article examines the concept of ‘technological citizenship’ in the context of today’s digital challenges, including misinformation, cybercrime, and privacy erosion. Highlighting the World Economic Forum’s identification of misinformation as a critical threat, it advocates for empowering citizens to navigate the digital landscape responsibly and informatively. The notion of ‘technological citizenship,’ introduced by Frankenfeld in 1992, is explored as a framework for leveraging digital technology’s benefits while mitigating its risks. Through two case studies, the article illustrates the complex interplay between digital technology, regulatory frameworks, and citizen engagement. The first case addresses a significant data breach within the Dutch Public Health Services during the COVID-19 pandemic, underscoring the consequences of insufficient governmental oversight. The second case focuses on the debate surrounding the proposed Child Sexual Abuse Regulation by the European Commission, highlighting the tension between privacy and child protection. The discussion extends to the legal, political, and sociological dimensions of technological citizenship, emphasizing the importance of citizen participation in shaping digital policies. By advocating for a dynamic democracy and a secure, equitable digital society, the article calls for policies that enable citizens to actively contribute to societal well-being in the digital age
Technological Citizenship in the Digital Age
No full textThis article examines the concept of ‘technological citizenship’ in the context of today’s digital challenges, including misinformation, cybercrime, and privacy erosion. Highlighting the World Economic Forum’s identification of misinformation as a critical threat, it advocates for empowering citizens to navigate the digital landscape responsibly and informatively. The notion of ‘technological citizenship,’ introduced by Frankenfeld in 1992, is explored as a framework for leveraging digital technology’s benefits while mitigating its risks. Through two case studies, the article illustrates the complex interplay between digital technology, regulatory frameworks, and citizen engagement. The first case addresses a significant data breach within the Dutch Public Health Services during the COVID-19 pandemic, underscoring the consequences of insufficient governmental oversight. The second case focuses on the debate surrounding the proposed Child Sexual Abuse Regulation by the European Commission, highlighting the tension between privacy and child protection. The discussion extends to the legal, political, and sociological dimensions of technological citizenship, emphasizing the importance of citizen participation in shaping digital policies. By advocating for a dynamic democracy and a secure, equitable digital society, the article calls for policies that enable citizens to actively contribute to societal well-being in the digital age
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