Empirical expression of tool wear when face milling 416 SS

During a machining process, cutting parameters must be taken into account, since depending on them the cutting edge starts to wear out to the point that tool can fail and needs to be change, which increases the cost and time of production. Since wear is a negative phenomenon on the cutting tool, due to the fact that tool life is reduced, it is important to optimize the cutting variables to be used during the machining process, in order to increase tool life. This research is focused on the influence of cutting parameters such as cutting speed, feed per tooth and axial depth of cut on tool wear during a face milling operation. The Taguchi method is applied in this study, since it uses a special design of orthogonal array to study the entire parameters space, with only few numbers of experiments. Also a relationship between tool wear and the cutting parameters is presented. For the studies, a martensitic 416 stainless steel was selected, due to the importance of this material in the machining of valve parts and pump shafts. Copyright © 2009 by ASME.

Please Stop Rubbing Your Relationship In My Face(book): An Investigation of Online Romantic Social Comparison

It is well-documented that social networking sites such as Facebook set the stage for social comparison. Such comparison has been linked to a number of negative outcomes including envy, negative moods, and lower self-esteem. The present research aims to extend current understanding of online social comparison by investigating how it pertains to romantic relationships. I hypothesized that for individuals high in attachment anxiety (compared to those low in this construct), online romantic social comparison might be related to negative consequences—which, in the current project, was operationalized as lower mood/affect and state self-esteem. Further, I hypothesized that there would be an interaction between attachment anxiety and relationship insecurities on these negative outcomes, such that the expected difference of attachment anxiety would be more pronounced under conditions priming relationship insecurities, relative to a control condition. Two experiments were conducted, one of which focused on single individuals, and the second focusing on individuals who were themselves in dating relationships. The paradigms of each entailed experimental manipulation of a key relationship-related variable (for single individuals, pessimism for future relationships; for dating individuals, the presence or absence of rejection threat), subsequent exposure to romantic content from Facebook, and finally, measures of affect and state self-esteem. I discovered partial support for the hypothesis that some single individuals—particularly those with higher, rather than lower, attachment anxiety—do indeed report feeling more negative moods and lower state self-esteem following exposure to romantic online content, in contrast to single individuals who had instead viewed neutral online content. The association between attachment anxiety and negative outcome was especially pertinent if individuals had been primed to believe that their own future romantic prospects were grim, or if attention had been drawn to their singleness. Among dating individuals, less support for hypotheses was found; however, exploratory post-hoc analyses revealed a promising (albeit weak) trend indicating that reinvestigation of the current hypotheses would be prudent.

News agencies, their constant reinvention as a strategy to face competition

News agencies compete for a foothold as providers of information and mass media. Covered by a technological class infrastructure, Associated Press, Reuters, Agence FrancePresse (AFP) and EFE are leaders of the global media system because they introduce revolutionary changes in their production routines, professional culture, journalistic genres and styles; also for its innovative product offerings and services. This article also focuses on the strategies of the agencies to get closer to their audiences, from the agreements established and the treatment of very specific themes. Some solutions that contribute to the future survival of these entities are also proposed.

The Changing Face of Neolithic and Bronze Age Ireland: A Big Data Approach to the Settlement and Burial Records

This paper synthesizes and discusses the spatial and temporal patterns of archaeological sites in Ireland, spanning the Neolithic period and the Bronze Age transition (4300–1900 cal BC), in order to explore the timing and implications of the main changes that occurred in the archaeological record of that period. Large amounts of new data are sourced from unpublished developer-led excavations and combined with national archives, published excavations and online databases. Bayesian radiocarbon models and context- and sample-sensitive summed radiocarbon probabilities are used to examine the dataset. The study captures the scale and timing of the initial expansion of Early Neolithic settlement and the ensuing attenuation of all such activity—an apparent boom-and-bust cycle. The Late Neolithic and Chalcolithic periods are characterised by a resurgence and diversification of activity. Contextualisation and spatial analysis of radiocarbon data reveals finer-scale patterning than is usually possible with summed-probability approaches: the boom-and-bust models of prehistoric populations may, in fact, be a misinterpretation of more subtle demographic changes occurring at the same time as cultural change and attendant differences in the archaeological record.

Face recognition using a unified 3D morphable model

We address the problem of 3D-assisted 2D face recognition in scenarios when the input image is subject to degradations or exhibits intra-personal variations not captured by the 3D model. The proposed solution involves a novel approach to learn a subspace spanned by perturbations caused by the missing modes of variation and image degradations, using 3D face data reconstructed from 2D images rather than 3D capture. This is accomplished by modelling the difference in the texture map of the 3D aligned input and reference images. A training set of these texture maps then defines a perturbation space which can be represented using PCA bases. Assuming that the image perturbation subspace is orthogonal to the 3D face model space, then these additive components can be recovered from an unseen input image, resulting in an improved fit of the 3D face model. The linearity of the model leads to efficient fitting. Experiments show that our method achieves very competitive face recognition performance on Multi-PIE and AR databases. We also present baseline face recognition results on a new data set exhibiting combined pose and illumination variations as well as occlusion.

LtpD is a novel legionella pneumophila effector that binds phosphatidylinositol 3-phosphate and inositol monophosphatase IMPA1

The Dot/Icm type IV secretion system (T4SS) of Legionella pneumophila is crucial for the pathogen to survive in protozoa and cause human disease. Although more than 275 effector proteins are delivered into the host cell by the T4SS, the function of the majority is unknown. Here we have characterized the Dot/Icm effector LtpD. During infection, LtpD localized to the cytoplasmic face of the membrane of the Legionella-containing vacuole (LCV). In A549 lung epithelial cells, ectopically expressed LtpD localized to large vesicular structures that contained markers of endosomal compartments. Systematic analysis of LtpD fragments identified an internal 17-kDa fragment, LtpD_471-626, which was essential for targeting ectopically expressed LtpD to vesicular structures and for the association of translocated LtpD with the LCV. LtpD_471-626 bound directly to phosphatidylinositol 3-phosphate [PtdIns(3)P] in vitro and colocalized with the PtdIns(3)P markers FYVE and SetA in cotransfected cells. LtpD was also found to bind the host cell enzyme inositol (myo)-1 (or 4)-monophosphatase 1, an important phosphatase involved in phosphoinositide production. Analysis of the role of LtpD in infection showed that LtpD is involved in bacterial replication in THP-1 macrophages, the larvae of Galleria mellonella, and mouse lungs. Together, these data suggest that LtpD is a novel phosphoinositide- binding L. pneumophila effector that has a role in intracellular bacterial replication. © 2013, American Society for Microbiology.

Fast and robust face finding via local context

[EN]In visual surveillance face detection can be an important cue for initializing tracking algorithms. Recent work in psychophics hints at the importance of the local context of a face for robust detection, such as head contours and torso. This paper describes a detector that actively utilizes the idea of local context. The promise is to gain robustness that goes beyond the capabilities of traditional face detection making it particularly interesting for surveillance. The performance of the proposed detector in terms of accuracy and speed is evaluated on data sets from PETS 2000 and PETS 2003 and compared to the object-centered approach. Particular attention is paid to the role of available image resolution.

The ENCARA system for face detection and normalization

[EN]Facial image processing is becoming widespread in human-computer applications, despite its complexity. High-level processes such as face recognition or gender determination rely on low-level routines that must e ectively detect and normalize the faces that appear in the input image. In this paper, a face detection and normalization system is described. The approach taken is based on a cascade of fast, weak classi ers that together try to determine whether a frontal face is present in the image.

A sexualidade nos idosos. Contributo para a avaliação das atitudes face à sexualidade nos idosos e a sua relação com a religião e nível cognitivo

O presente estudo teve como objectivo principal conhecer melhor aspectos relacionados com a sexualidade na 3ª idade. A escala utilizada foi construída por nós, tornando-se num elemento chave para esta pesquisa. A escala de atitudes face à sexualidade no idoso foi relacionada com algumas características sociodemográficas: género, idade, estado civil, escolaridade e religião. Da análise realizada ressaltam evidências de uma atitude conservadora face às questões da sexualidade na 3ª idade. Através de uma amostra de 120 idosos com idades compreendidas entre os 60 e os 97 anos de idade, constatámos que os homens e as mulheres distinguem-se significativamente no que respeita às atitudes face à sexualidade, exibindo os homens uma atitude global mais positiva e liberal (M = 25.82). Os resultados evidenciaram um efeito significativo da variável escolaridade sobre o nível cognitivo, revelando que quanto maior a escolaridade do idoso na nossa amostra, maior é o nível cognitivo. Relativamente ao estado civil, os casados revelaram uma atitude global mais positiva perante a sua sexualidade (M = 31.98) comparativamente aos viúvos (M = 27.26) e aos divorciados (M = 23.67). A religião apenas se mostrou associada com a escala de atitudes face ao cristianismo, evidenciando aqueles que são praticantes, uma atitude mais positiva em relação ao cristianismo. Na nossa amostra, também podémos constatar que quanto maior é o nível cognitivo, mais positiva é a atitude face à sexualidade. Com base nos pontos de corte do MMSE verificou-se que 75% dos idosos da nossa amostra não apresentava qualquer défice cognitivo. Comparados os grupos, sem e com défice cognitivo, constatou-se que o grupo de idosos sem défice cognitivo exibe uma atitude mais positiva face à sexualidade que o grupo com défice cognitivo. Pretendemos que de alguma forma este estudo contribua para dar a conhecer as atitudes dos idosos face à sua sexualidade bem como esperamos que os nossos resultados permitam uma reflexão sobre possíveis estratégias de intervenção no sentido de promover uma sexualidade bem vivida por esta faixa etária. / The present study aimed to better understand the main aspects related to sexuality in the 3rd age. The scale used was built by us, becoming a key element in this research. The scale of attitudes towards sexuality in the elderly was related to sociodemographic characteristics: gender, age, marital status, education and religion. From the analysis point out evidence of a conservative approach in relation to issues of sexuality in the 3rd age. Using a sample of 120 elderly aged 60 and 97 years old, found that men and women differ significantly with regard to attitudes towards sexuality, men showing a more positive overall attitude and liberal (M = 25.82). The results showed a significant effect on the education variable cognitive level, revealing that the higher the education of the elderly in our sample, the higher the cognitive level. With regard to marital status, married people showed a more positive overall attitude towards their sexuality (M = 31.98) compared to widowed (M = 27.26) and divorced (M = 23.67). The only religion was associated with the scale of attitudes to Christianity, showing those who are practitioners, a more positive attitude toward Christianity. In our sample, we can also see that the higher the cognitive level, the more positive attitude towards sexuality. Based on the MMSE cutoffs found that 75% of older people in our sample did not show any cognitive deficit. Comparing the groups with and without cognitive impairment, it was found that the group of elderly people without cognitive impairment display a more positive attitude towards sexuality that the group with cognitive impairment. We intend that somehow this study contributes to publicize the attitudes of the elderly compared to their sexuality and we expect our results allow a discussion on possible intervention strategies to promote a sexuality lived well by this age group.

Qualidade de Vida e Atitudes dos Idosos Face à Velhice

A problemática do envelhecimento tem assumido, nos últimos anos, uma crescente importância na consciência coletiva da população, tornando-se cada vez mais importante compreender a população idosa e a sua realidade. Posto isto, foi realizado um estudo quantitativo e correlacional, que teve como objectivo avaliar a qualidade de vida e atitudes face à velhice de idosos, bem como a relação entre estas e as variáveis sociodemográficas e familiares. Foram inquiridos 100 idosos, com mais de 65 anos e sem deficit cognitivo . Para a recolha de dados utilizou-se uma entrevista estruturada, constituída dados sóciodemográficos do idoso, WHOQOL-AGE (Caballero, Miret, Power, Chatterji, Tobiasz-Adamczyk, Koskinen, Leonardi, Olaya, Haro &Ayuso-Mateos, 2013) e o AAQ ( Laidlaw, Power, Schmidt and the WHOQOL-OLD Group, 2007). Dos resultados destacamos os seguintes: A amostra é constituída por 52% de idosos do sexo masculino tendo uma média de idades de 74,7 (DP=6,8). È no fator Perdas Psicossociais e no Desenvolvimento Psicológico que os idosos têm uma melhor atitude face ao envelhecimento. É no item “Tem dinheiro suficiente para satisfazer as suas necessidades?” que os idosos apresentam uma menor qualidade de vida. Não ter doença diagnosticada e ser do sexo masculino permitem ter melhores atitudes face ao envelhecimento. A Qualidade de Vida está relacionada com a idade, com o estado de saúde e com a intensidade de preocupação da família. Constatou-se que os idosos que não estão institucionalizados apresentam uma melhor qualidade de vida e uma melhor atitude face à velhice. Quem não precisa de ajudas técnicas para se movimentar apresenta uma melhor qualidade de vida. Diferenças nas atitudes face ao envelhecimento consoante a residência onde habita são significativas nas mudanças físicas e no desenvolvimento psicológico sendo que os idosos que não vivem em lares têm uma atitude mais positiva em ambos os fatores. / Over the past few years the issue of aging has played a growing importance in the population`s collective consciousness becoming increasingly important to understand the elderly population and this reality. Therefore a quantitative correlational study was performed to assess the quality of life of seniors and their attitudes towards old age, and the relationship between these and the socio-demographic and family factors. 100 seniors with more than 65 years and without cognitive deficit were surveyed. For data collection we used a structured interview consisting of sociodemographic data of the elderly, WHOQOL-AGE (Caballero Miret Power Chatterji Tobiasz-Adamczyk Koskinen Leonardi Olaya Ayuso-Mateos & Haro 2013) and AAQ (Laidlaw Power Schmidt and the WHOQOL-OLD Group 2007). We highlight: The sample is composed of 52% of males with a mean age of 74.7 (SD = 6.8). It is in the factor Psychosocial Losses and Psychological Development that elderly people have a better attitude towards aging. It is in the item "Do you have enough money to meet your needs?" that seniors show less quality of life. Not having illness and being male allows having better attitudes towards aging. Quality of Life is related to age, health condition and the intensity of family concerns. It was observed that the elderly who are not institutionalized have a better quality of life and a better attitude towards old age. Who does not need assistive devices to move around has a better quality of life. Differences in attitudes towards aging, according to residency, are significant in physical changes and psychological development, thus verifying that elderly who do not live in nursing homes have a more positive attitude in both factors.

Ansiedade em face da morte em Agentes Funerários

Ao pensar na morte há um reconhecimento da vulnerabilidade humana e da própria fragilidade da vida. A morte é universal, mas experienciada de uma forma individualizada por cada um de nós, a partir da personalidade, experiências de vida, variáveis pessoais, idade, sexo, religião. Vivenciar a morte e o morrer poderá conduzir a sensações de medo e ansiedade. Os agentes funerários que lidam diariamente com a morte e com o “luto” (do corpo morto e dos familiares em relação ao ente querido que perderam) poderão estar expostos a sentimentos de ansiedade depressiva pela ativação diária do confronto com a própria morte, ou com a morte de pessoas a quem estão intimamente ligados. É objetivo deste estudo avaliar os níveis de ansiedade em face da morte em agentes funerários, e ainda explorar a eventual associação entre fatores sociodemográficos e profissionais selecionados e esta variável. A amostra é composta por 60 sujeitos de uma empresa funerária em Portugal. Os instrumentos psicométricos utilizados foram a Escala de Ansiedade face à Morte (DAQ), e um questionário sociodemográfico desenhado para o presente estudo. Os resultados globais mostram que os Agentes Funerários apresentam níveis de ansiedade face à morte estatisticamente significativos (M = 35,88; DP = 9,02). O género, a idade, religião, anos de experiência, estado civil, terem filhos, ter morrido alguém próximo ou significativo, especificidade de trabalho: ser comercial ou operacional o número de contatos, não marcam significativamente a forma como os sujeitos em estudo percecionam a sua ansiedade em face da morte. Os níveis de ansiedade aumentam entre aqueles que não tiveram formação específica para lidar com estas situações. / When thinking about death there is recognition of human vulnerability and fragility of life itself. Death is universal but experienced individually by each of us, through personality, life experiences, personal variables, age, sex, religion. Experiencing death and dying can lead to feelings of fear and anxiety. Funeral Agents who daily deal with death and with the "mourning" (the dead body and the family of the deceased) may be exposed to feelings of depressive anxiety activated by the daily confrontation with death itself or death of people who are close to them. The aim of this study is to assess the levels of anxiety in Funeral Agents when facing death, and also explore the eventual association of social-demographic and professional factors with this variable. The sample consisted of 60 subjects of a Portuguese Funeral company. The instruments used were the Death Anxiety Questionnaire (DAQ) and a socialdemographic questionnaire designed for the present study. The overall results show that Funeral Agents present anxiety levels statistically significant when facing death (M = 35.88, SD = 9.02). Gender, age, religion, years of experience, marital status, having children, the death of someone close or important, and the specificity of the job (commercial or operational agent), the number of contacts, show no statistically significant association with anxiety when facing death. However, the levels of anxiety increase among those who had had no specific formation to deal with these situations.

Facing the Face of the Other: The Case of the Nia Centre

Until comparatively recently there has been little systematic effort to record the contribution to British theatre history of the diversity represented by Black British and British South and East Asian theatre makers. That failure to ‘see’ and acknowledge this lacuna within the academy reflected what in 2001 was condemned as widespread institutional racism within the theatre industry itself. The other ‘faces’ had been rendered effectively invisible. This chapter considers the ethical and evidential challenges associated with the task of recovering the history of a project created to enhance an important concept of cultural identity: the little-documented failure in the 1990s of the Nia Centre, the UK’s first black arts centre which opened in Hulme, Manchester in 1991. My exploration raises a number of key ethical challenges: How in the aftermath of the Nia’s collapse and in the almost complete absence of archival records, is the historian to mediate what inevitably are multiple truths coming from different perspectives? Whose, and what values were, and remain, at stake both at the time of the project itself, and in the telling of the history? How does the historian deal with failure especially if the circumstances were obscure and little regarded? The dream of the Nia died more than a decade ago, but the participants in that history are very much alive and their sensitivities have to be respected as part of the ethical challenge.

“It’s the People That Drive It”: Motivating and Supporting Collaborative Data Use Practices in Three Teacher Education Programs

Thesis (Ph.D.)--University of Washington, 2016-08

Crenças e atitudes dos profissionais da educação face à sexualidade dos alunos com incapacidade intelectual num agrupamento de escolas da Maia

A sexualidade é um dos aspetos essenciais para o equilíbrio psicossomático e o desenvolvimento integral do ser humano. No caso da sexualidade das pessoas com incapacidade intelectual, o preconceito, mitos, tabus e a discriminação colaboram para uma perspetiva de que a pessoa com incapacidade não tem direito a exercer a sua sexualidade. Neste contexto, esta investigação tem como objetivo descrever e compreender Crenças e Atitudes dos profissionais da educação face à sexualidade dos alunos com incapacidade intelectual num agrupamento de escolas da rede pública. Nesta pesquisa, de tipo descritivo, os dados foram recolhidos através de um questionário em formato digital com perguntas abertas e fechadas e analisados de forma qualitativa e quantitativa. Participaram neste estudo 106 docentes e 50 assistentes operacionais em funções num agrupamento de escolas da Maia. Globalmente, os resultados obtidos mostram que existe concordância elevada nos dois grupos de estudo relativamente ao facto de a sexualidade integrar as várias dimensões (Afetividade, Comunicação, Prazer e Reprodução), da necessidade de obterem informação no âmbito da Educação Sexual e concordância moderada no facto de ser difícil falar sobre o tema da sexualidade com os alunos com Incapacidade Intelectual. Tanto os docentes do sexo masculino, como os assistentes operacionais do mesmo género revelam níveis médios de atitudes positivas superiores relativamente aos pares do sexo feminino.

A perceção de alunos sem Necessidades Educativas Especiais face à inclusão dos pares com Perturbação do Espetro do Autismo no terceiro ciclo, do ensino básico

Em Portugal observa-se um aumento de alunos diagnosticados com Perturbação do Espetro do Autismo (PEA), possivelmente devido à existência de maior sensibilização e informação dos diversos profissionais que contatam com estes alunos, bem como à sua inclusão nas classes regulares. Contudo, continuam a existir poucos estudos sobre a inclusão dos alunos com PEA nas turmas regulares, principalmente no que diz respeito à opinião dos colegas sem NEE. O presente estudo tem como objetivo geral conhecer a perceção dos alunos sem necessidades educativas especiais (NEE) sobre a inclusão dos alunos com PEA, nas turmas do terceiro ciclo do ensino básico, de uma escola pública. Trata-se de um estudo descritivo de cariz quantitativo, no qual foi utilizado um questionário que foi preenchido pela maior amostra possível, cinquenta alunos. Verificou-se que a maioria dos inquiridos pertencia ao sexo feminino, com idades compreendidas entre os doze e os dezasseis anos e frequentavam, na sua maioria, o nono ano de escolaridade, sem qualquer retenção. Pode-se concluir que os alunos sem NEE não reconhecem mudanças físicas e estruturais nas aulas do ensino regular quando estão presentes os seus colegas com PEA. Em termos ambientais, transmitem haver alguma perturbação das aulas devido ao comportamento dos colegas com PEA. No entanto, não se verifica qualquer relação entre os resultados académicos e a inclusão dos alunos com PEA.Ao nível social e emocional, os alunos sem NEE tendem a aproximar-se mais dos seus colegas com PEA e a demonstrar atitudes de cooperação e proteção para com estes. Por último, os alunos sem NEE consideram que apenas os alunos com PEA que apresentam necessidades/dificuldades ligeiras ou os que conseguem acompanhar o currículo é que devem frequentar algumas aulas do ensino regular mais práticas, mas ir com maior regularidade a um Estabelecimento de Educação Especial.