bluuebunny/crossref_metadata_2025 huggingface dataset:
KINETICS AND MECHANISMS OF THE ACID-BASE REACTION BETWEEN NH3 AND HCOOH IN INTERSTELLAR ICE ANALOGS
Authors: Bergner Jennifer B. , Öberg Karin I. , Rajappan Mahesh , Fayolle Edith C.
Published: September 2016

Interstellar complex organic molecules are commonly observed during star formation, and are proposed to form through radical chemistry in icy grain mantles. Reactions between ions and neutral molecules in ices may provide an alternative cold channel to complexity, as ion-neutral reactions are thought to have low or even no-energy barriers. Here we present a study of the kinetics and mechanisms of a potential ion-generating, acid-base reaction between NH3 and HCOOH to form the salt NH

HCOO−. We observe salt growth at temperatures as low as 15 K, indicating that this reaction is feasible in cold environments. The kinetics of salt growth are best fit by a two-step model involving a slow “pre-reaction” step followed by a fast reaction step. The reaction energy barrier is determined to be 70 ± 30 K with a pre-exponential factor 1.4 ± 0.4 × 10−3 s−1. The pre-reaction rate varies under different experimental conditions and likely represents a combination of diffusion and orientation of reactant molecules. For a diffusion-limited case, the pre-reaction barrier is 770 ± 110 K with a pre-exponential factor of ∼7.6 × 10−3 s−1. Acid-base chemistry of common ice constituents is thus a potential cold pathway to generating ions in interstellar ices.
Assessing the Value of Novel Habitats to Snail Kites through Foraging Behavior and Nest Survival
Authors: Pias Kyle E. , Fletcher Robert J. , Kitchens Wiley M.
Published: September 2016

Novel ecosystems arise for a variety of reasons, most notably from the introduction of nonnative species. Understanding the interactions between traditional habitats, novel habitats, and species of conservation interest is important when planning successful conservation strategies. In the United States, the snail kite Rostrhamus sociabilis plumbeus is a federally endangered species whose population in Florida has undergone declines within the past decade. While studying the foraging behavior of breeding snail kites on Lake Tohopekaliga (Lake Toho), we discovered the unexpected use of disturbed ephemeral wetlands adjacent to the lake. These wetlands represent a novel habitat for snail kites; they would not have been viable foraging areas prior to the introduction of the exotic island apple snail Pomacea maculata. By examining the differences between snail kite behavior in traditional and novel habitats, we were able to identify some characteristics of novel habitats that may be important in determining their value to snail kites. The novel wetland areas were highly attractive to snail kites, likely because of the high snail capture rates. The survival of snail kite nests occurring within the novel areas appeared to be similar to that of nests occurring in more traditional, nearby areas on Lake Toho. However, whether or not snail kites used novel habitats as nesting areas appeared to be dependent upon water depth and availability of nesting substrate within these areas. The snail kites' dynamic use of the novel habitat demonstrates both the value of a novel ecosystem and the importance of traditional habitats to a species of conservation concern.
On the representation and evolution of Australian English and New Zealand English
Authors: Przewozny Anne , Viollain Cécile
Published: September 2016

L’anglais australien (AusE) et l’anglais néo-zélandais (NZE) sont deux variétés d’anglais dit « transporté » dans l’hémisphère sud. Bien qu’il ne fasse aujourd’hui aucun doute au sein de la communauté scientifique qu’ils constituent deux dialectes distincts comprenant chacun leurs propres caractéristiques lexicales, morphosyntaxiques et phonético-phonologiques, et malgré l’abondance des descriptions linguistiques endocentriques depuis la seconde moitié du XXe siècle, la description et la représentation de l’AusE et du NZE se sont souvent retrouvées figées en un unique dialecte « australasien ». L’ AusE et le NZE comptant parmi les variétés ayant émergé le plus tardivement au sein du monde anglophone, elles n’ont été étudiées de façon approfondie et considérées comme des objets d’étude valides par la communauté des chercheurs que très récemment. Le propos principal du présent article est d’évaluer certains changements en cours et leurs possibles conséquences sur la description de l’ AusE et du NZE. Nous considérons d’abord certains arguments historiques qui ont résulté en un amalgame descriptif erroné de l’ AusE et du NZE. Ceci laissait peu de place à la variation phonologique et/ou phonétique spécifique à chaque variété, et encore moins à la possibilité d’une description de l’ AusE et du NZE comme deux entités linguistiques distinctes en Australasie. Après avoir passé en revue quelques faits historiques, quelques dénonciations critiques et théories profanes parallèles sur l’origine des deux variétés australes, nous nous concentrons sur la représentation phonologique de l’ AusE et du NZE dans la littérature consacrée aux accents de l’anglais à travers le monde. Dans le but de contribuer à la définition de l’ AusE et du NZE comme des objets linguistiques en mouvement et de promouvoir un portrait dynamique de chaque variété, des données orales contemporaines issues du programme PAC permettent de fournir des analyses comparatives en faveur de deux arguments majeurs du caractère distinctif de l’ AusE et du NZE: la rhoticité en Nouvelle-Zélande et les changements en chaîne des voyelles antérieures brèves en AusE et en NZE.
Patterns and Variation in the Weather Forecast: Can Prosodic Features be Predicted Too?
Authors: Moore Mauroux Susan
Published: September 2016

The aim of this article is to explore a specific type of media programme: the weather forecast. The analysis is based on a corpus of weather forecasts for the UK, mainly from the Met Office, with five different speakers. The weather forecast is considered as a specific oral discourse type which functions within a fairly set framework involving a number of recurrent features, including a well-defined lexical field and recognizable prosodic patterns. This analysis will try to determine what these features are and how they interact. The study reveals how lexical and prosodic cues are used to connect with the target audience, enabling the forecaster to structure, highlight and even comment on information. The study aims to bring to light what our expectations are as regards the weather forecast, and how far these expectations affect our perception and even our understanding of the message.
Analysis of Ocean in Situ Observations and Web-Based Visualization
Authors: Barth Alexander , Watelet Sylvain , Troupin Charles , Alvera-Azcárate Aida , Beckers Jean-Marie
Published: September 2016

The sparsity of observations poses a challenge common to various ocean disciplines. Even for physical parameters where the spatial and temporal coverage is higher, current observational networks undersample a broad spectrum of scales. This situation is generally more severe for chemical and biological parameters because such sensors are less widely deployed. The present chapter describes the analysis tool DIVA (Data-Interpolating Variational Analysis) which is designed to generate gridded fields from in situ observations. DIVA has been applied to various physical (temperature and salinity), chemical (concentration of nitrate, nitrite and phosphate) and biological parameters (abundance of a species). The chapter also shows the technologies used to visualize the gridded fields. Visualization of analyses from in situ observations provide a unique set of challenges since the accuracy of the analysed field is not spatially uniform as it strongly depends on the location of the observations. In addition, an adequate treatment of the depth and time dimensions is essential.
Firm Competitiveness
Authors: Vlachvei Aspasia , Notta Ourania
Published: September 2016

Competitiveness has been a topic of research in the manufacturing and related sectors since the early 1990s. While there is much agreement on the economic and social importance of competitiveness, it is less clear what exactly competitiveness is and what its most important determinants are. The focus of this paper is to review the literature at the firm level and evaluate and compare all the available competitiveness-related frameworks and models, to present the empirical evidence and to investigate the relevant competitiveness indices.
An Investigation of Competitor Networks in Manufacturing Strategy and Implications for Performance
Authors: Rosenzweig Eve D. , Bendoly Elliot
Published: September 2016

Our study demonstrates the value of taking a more encompassing and explicit view of competition in manufacturing strategy research. In doing so, we go beyond a dyadic-based approach and investigate the ways in which the degree of competition among firms in a network influences performance. Using social network analysis techniques, we develop a novel measure—which we refer to as competitor infighting—that captures the extent to which a firm's rivals compete amongst themselves. Our results suggest that a firm has a greater, unimpeded opportunity to demonstrate market gains as the degree of competition among its rivals increases, all else equal. In fact, competitor infighting is a better predictor of market performance in our sample than is a simpler, though perhaps more traditional, count of competitors. It serves an important moderating role in the relationship between a firm's operational weaknesses and market performance. As predicted, we find that as competitor infighting increases, the relationship between operational weaknesses and market performance is diminished.
IT Governance Maturity Patterns in Portuguese Healthcare
Authors: Pereira Ruben , Mira da Silva Miguel , Lapão Luís Velez
Published: September 2016

The pervasive use of technology in organizations to address the increased services complexity has created a critical dependency on Information Technology (IT) that calls to a specific focus on IT Governance (ITG). However, determining the right ITG mechanisms remains a complex endeavor. This paper uses Design Science Research and proposes an exploratory research by analyzing ITG case studies to elicit possible ITG mechanisms patterns. Six interviews were performed in Portuguese healthcare services organizations to assess the ITG practices. Our goal is to build some theories (ITG mechanisms patterns), which we believe will guide healthcare services organizations about the advisable ITG mechanisms given their specific context. We also intend to elicit conclusions regarding the most relevant ITG mechanisms for Portuguese healthcare services organizations. Additionally, a comparison is made with the financial industry to identify improvement opportunities. We finish our work with limitations, contribution and future work.
A Framework for Research on Information Technology Governance in SMEs
Authors: Bergeron François , Croteau Anne-Marie , Uwizeyemungu Sylvestre , Raymond Louis
Published: September 2016

The need to effectively manage IT resources such that they enhance the business value of firms makes IT Governance (ITG) an important issue for both IS researchers and practitioners. The purpose of this paper is to build a conceptual framework for ITG in small and Medium-Sized Enterprises (SMEs). The authors first analyze the main theories applied in ITG research, and confront them with the specificities of SMEs. The authors then highlight the limits of those theories in SMEs context and discuss adaptations needed or alternative theories in such context. The resulting framework is then applied to generate a set of six research propositions on ITG in SMEs.
Aligning Information Systems and Technology with Benefit Management and Balanced Scorecard
Authors: Gomes Jorge , Romão Mário
Published: September 2016

Investments in Information Systems and Technology (IS/IT) have not always generated the business value or the financial revenue that should be expected. Some authors argue that the result of those studies that related investments in IS/IT to increased organisational performance over the last thirty years were far from true. Others say that the amount spent on IS/IT and business success has no direct connection. The relationship between IS/IT and performance is widely discussed, but is little understood. Organizations today need to deliver more complex products and demanding services in a better, faster, and cheaper way. The challenges that companies address today require enterprise-wide solutions that call for an integrated approach and the effective management of organizational resources in order to achieve business objectives. Benefits Management (BM) approach proposes a continuous mapping of the benefits of IS/IT investments, implementing and monitoring intermediate results. Balanced Scorecard (BSC) is an innovative approach that considers the financial and non-financial perspectives in determining the performance level of an organization. Not only does it represent a measurement tool, but it is also a multi-dimensional system of performance management which focusses on the alignment of all business initiatives with the strategy. In this paper, the authors propose a link between these two approaches to improve the management of business benefits and to ensure that actions taken along the investment life-cycle lead to foreseen benefits realization. The goal of this integration is to propose a framework that combines the “best of” the both methods. A key issue of this combination lies in the fact that all involved stakeholders must understand more clearly what is required, what is realistically expected, and what is possible to achieve from these investments.
Internet Banking Usage Level of Bankers
Authors: Özer Ahu Coşkun , Gürel Hayrünisa
Published: September 2016

Banks provide service not only through branches in the countries but also offers banking services to customers over the internet. However, customers concern using internet banking because of the various troubles and adversities that may occur on the web and because of their habits. The using of internet banking is still not reached the desired level due to various reasons such as security, troubles on web and habits of customers. In this research, bankers using rate of internet banking and bankers approach on internet banking are determined. According to the survey results in Turkey, almost all of the bankers use internet banking but using of mobile applications does not appear to fully spread. Even though the using of internet banking is very common among the bankers, some of the participants said that they encountered some problems while using internet banking. Solutions of systemic deficiencies, password security problems and other security problems will increase the using of internet banking.
Expectation and Perception of Internet Banking Service Quality of Select Indian Private and Public Sector Banks
Authors: Ray Nilanjan
Published: September 2016

This research paper mainly deals with expectation and perception of service quality of select Indian Banks i.e. SBI and HDFC on the customer satisfaction. The research survey was based on IS-QUAL dimensions (Ray & Ghosh,2014) a diagnostic model developed in 2014, which measures service quality and internet service quality in terms of customer expectations and perceptions of banking services. This present research tends to evaluate the overall idea of expected and perceived services of the two banks. This study is a cross-sectional survey that employed the use of pre-structured questionnaire to collect primary data from a sample of 120 respondents through personal contact, field survey and email. Collected data have been analyzed through SPSS 21 software by different statistical tools like Reliability test for judgment of internal consistency of collected data and paired t- test.
Insider Threat in Banking Systems
Authors: Yaseen Qussai
Published: September 2016

Insider threat poses huge loss to organizations since malicious insiders have enough knowledge to attack high sensitive information. Moreover, preventing and detecting insider attacks is a hard job because malicious insiders follow legal paths to launch attacks. This threat leads all kinds of attacks in banking systems in the amount of loss it causes. Insider threat in banking systems poses huge harm to banks due to the importance and attractiveness of assets that banks have. This chapter discusses insider threat problem in banking sector, and introduces important surveys and case studies that show the severeness of this threat in this sector. Moreover, the chapter demonstrates some policies, technologies and tools that may prevent and detect insider threat in banking systems.
Identification of Potential Clients, Providers, and Competitors in Supply Chain Networks
Authors: Bruno Giulia
Published: September 2016

In the last years Small and Medium-Sized Enterprises (SMEs) were driven to aggregate in industrial networks, due to the need to compete in a globalized market, but also to the aspiration to provide sufficient stability for their own small business. SMEs belonging to networks share objectives and strategies with the other SMEs, while preserving their own individual autonomy. One of this network type is the supply chain, where companies collaborate with one or more other companies depending on the sector they belong. A typical problem in this context is to evaluate the place of a new SME inside the network, i.e., the number of potential clients, suppliers and competitors that the SME would have. The goal of this work is to offer an method to analyze the potentiality of existing SME networks based on public information available on the Web.
Analysis of the Possibility to Implement the Transics System and GBOX Assist Systems in a Selected Company
Authors: Kozlowski Remigiusz , Iltchev Petre , Palczewska Anna , Pilichowska Klaudia , Marczak Michał
Published: September 2016

The aim of this chapter is to present the implementation of a fleet management systems (FMS) in selected transport companies. Transport management systems (TMS) / FMS evolve as a result of developing novel functionalities. The greatest challenge is TMS integration within the existing IT infrastructure of the company. Calculating return on investment (ROI) based on data analysis is important to select the optimum FMS. During the implementation of an FMS, of importance is to adapt the system to the business processes and train the employees in software usage. The architecture of an FMS affects the process of its implementation. Its implementation has many benefits and greatly improves company performance, including profitability.
Teacher Education and Teacher Professional Development
Authors: Kasemsap Kijpokin
Published: September 2016

This chapter reveals the prospect of teacher education; teacher education and technology utilization; the issues with professional development (PD); and the perspectives on teacher professional development (TPD) in the digital age. Teacher education offers teachers ways to keep their classrooms and curriculum highly educational. By providing teachers with teacher education programs, they are able to continue their own education, gain vital skills that they may not have been able to learn while taking college courses, and stay current with new technologies. TPD is an essential method of improving teaching and learning for teachers. TPD provides time, resources, and educational personnel to support teachers to improve their skills about teaching and learning. The effective teacher education and TPD programs should include technology pedagogy, the 21st century skills, and ethical perspectives toward improving preservice teacher's technological skills and enhancing both learner's educational opportunities and learning outcomes.
Developing Academic Writing Skills of In-Service and Pre-Service Teachers
Authors: Plakhotnik Maria Sergeevna , Ershova Ekaterina Alexandrovna
Published: September 2016

This chapter reports on services created and implemented by a writing center in a large public university in the USA to assist to pre-service teachers and in-service teachers with academic writing as professional development activities while they are pursuing their degrees. Academic writing is a style of written communication that has become acceptable in institutions of higher education (Craswell, 2005). The services include: 1) a series of workshops to teach the requirements of the Publication Manual of the American Psychological Association (American Psychological Association [APA], 2010), 2) a series of workshops around conceptualizing a research project and submitting a paper to a conference, 3) writing support circles, and 4) individual consultations. The chapter provides a description of each of this service, including the purpose and the design, highlights outcomes of these professional development services, and discusses challenges in its design and implementation.
I Play I Learn
Authors: Byker Erik Jon
Published: September 2016

The purpose of this chapter is to describe and report the development of an original theoretical work which emerged from comparative and international empirical research. The theory is called, “Technological Play Theory.” In sharing about Technological Play Theory, this study has three purposes. First, the study explains how Technological Play Theory emerged in a grounded theory way (Glaser & Strauss, 1968) from research findings about the social construction of technology among elementary school teacher and students in England, Cuba, India, South Korea, and the United States. Second, the study examines the contours of the Technological Play Theory in relationship to empirical findings. Third, the study examines how Technological Play Theory can be empowering and utilized as an “agent of change” in education and schooling.
Potato, Pot-Ar-To. Tomato, Tom-Ar-To
Authors: Velliaris Donna M.
Published: September 2016

Research on school effectiveness largely relates to ways of measuring the quality of a school, which is often quantified in terms of students' ‘academic' achievement. The impetus for this research was the recognition that as a pre-university pathway provider, the lecturers at the Eynesbury Institute of Business and Technology (EIBT) face increasingly complex and divergent academic challenges stemming from its 98-100% international student demographic. An anonymous survey comprising two open-ended questions was distributed to EIBT staff for reflection. Rich narrative data from 10 respondents elucidates varied understanding(s) of the difference(s) between ‘teacher' and ‘teaching' quality, as well as recommendations for their own Professional Development (PD). It is the author-practitioner's belief that institutional advancement requires greater attention to ‘teaching' rather than ‘teachers', and that PD is a collective effort that is fundamental to overall scholastic success.
An Agile K-12 Approach
Authors: Mumford Jacqueline M. , Fiala Laci , Daulton Marietta
Published: September 2016

Several schools in the United States are adapting to incorporate 21st century skills, active learning pedagogical approaches, and new technological innovation to advance student learning. Creating physical and virtual spaces and support for creativity, collaboration, critical thinking, and innovation is vital. Yet, designing and offering meaningful professional development to teachers in these new learning ecosystems is a challenge. This chapter explores the application of Agile methodologies to professional development planning, design, and facilitation in a school district that implemented a new learning ecosystem. The Agile approach resulted in customized professional development opportunities that were rigorous, relevant, iterative, and flexible enough to meet district needs. Data were collected on teacher technology efficacy, and initial results indicated success. This has generated an agenda for further research.
Project-Based Learning Integration with Teachers Immersed in a Professional Development Initiative
Authors: McCormack Virginia
Published: September 2016

This chapter focused on the effectiveness of a professional development initiative on the planning, designing, and implementing project-based learning in mathematics, science, and special education classrooms. The purpose was to highlight project-based learning and the development of a professional development learning community that provided unique ways in which teachers engaged with a variety of learning tasks, assessments, and resources while practicing vital mathematics and science skills with diverse students. Attention was given to the importance of teacher attitude and confidence, collaboration, school support, barriers, and increasing student engagement. The case study method was used to amass and probe data. The results indicated valuable suggestions about the effectiveness of professional development for active engagement in project-based learning through networking, differentiating instructional strategies, creating new assessment tools, and gaining content knowledge and pedagogical skills.
CRIANÇAS COM CEGUEIRA E BAIXA VISÃO: O BRINCAR NA PERSPECTIVA HISTÓRICO-CULTURAL
Authors: Osandon Albarran Patricia Andrea , Pereira Seabra da Cruz Eva Aparecida , Nunes Henrique Silva Daniele
Published: September 2016

Parece ser um consenso teórico afirmar que o brincar é uma das mais importantes atividades do desenvolvimento infantil. Autores de diferentes abordagens indicam a centralidade dessa atividade para as crianças pequenas. A partir dos pressupostos teóricos da perspectiva histórico-cultural, campo teórico de interesse do presente artigo, temos observado um aumento de trabalhos científicos que problematizam a brincadeira infantil. Entretanto, a partir de um levantamento de artigos, dissertações e teses escritos em português, que realizamos entre os anos de 2004-2014, na base integrada da Universidade de Brasília (UnB) e no oasisbr – o portal brasileiro de publicações científicas em acesso aberto –, identificamos um número reduzido de estudos brasileiros que investigam a brincadeira de crianças cegas e com baixa visão. Buscando compreender esse contexto de produções acadêmicas, esse artigo objetiva contribuir para o mapeamento desse objeto de estudo, sinalizando a importância do mesmo para o campo da psicologia, educação e políticas públicas.
O BEBÊ AOS TRÊS MESES: CONCEPÇÕES DE PAIS E MÃES
Authors: Nunes Laísy De Lima , Salomão Nádia Maria Ribeiro
Published: September 2016

As concepções parentais sobre o desenvolvimento infantil refletem o modo como as mães e os pais entendem esse desenvolvimento e podem influenciar, direta ou indiretamente, as interações pais-bebê. O objetivo do presente estudo foi analisar as concepções parentais sobre o desenvolvimento infantil inicial e verificar quais os aspectos que pais e mães consideram importantes para promover o desenvolvimento. Participaram da pesquisa 20 (vinte) mães e 20 (vinte) pais de bebês com 3 (três) meses de idade. Foram utilizados um questionário sociodemográfico e uma entrevista semiestruturada. A análise dos dados seguiu os pressupostos qualitativos da análise de conteúdo. Os resultados apontaram que mães e pais percebem os bebês aos 3 meses como passando de um estado de passividade para maior atividade, tanto em termos motores quanto nos aspectos sociocomunicativos e cognitivos. Na visão dos pais, as novas aquisições infantis permitem maior interação entre os cuidadores e o bebê. A maioria dos participantes mencionou os estímulos como aspectos promotores do desenvolvimento, embora muitos também tenham destacado a importância dos fatores biológicos e hereditários. De modo geral, pais e mães apresentaram concepções que reconhecem o papel parental como essencial na promoção do desenvolvimento saudável dos filhos. Considera-se que esse trabalho contribui positivamente com a área de estudos sobre o desenvolvimento infantil inicial, tendo em vista que apresenta dados sobre um período crucial para o desenvolvimento do bebê e para a adaptação dos pais.
UMA CARTOGRAFIA DAS REPERCUSSÕES DAS REDES SOCIAIS NA SUBJETIVIDADE
Authors: Marra e Rosa Gabriel Artur , Santos Benedito Rodrigues dos , Chagas-Ferreira Jane Farias
Published: September 2016

O objetivo deste artigo é mapear as possíveis repercussões ou influências das redes sociais de internet na subjetividade de seus usuários. As concepções e sentidos subjacentes à vivência dos participantes, em termos da autoapresentação e interação nesse ambiente, constituíram-se no objeto de estudo desta investigação. A metodologia fundamentou-se na pesquisa qualitativa com base na observação participante e em entrevistas semiestruturadas com 16 participantes do facebook, de ambos os sexos, de diferentes idades, etnias e níveis socioeconômicos. A interpretação dos dados foi efetuada por meio de um diálogo entre a concepção de subjetividade prêt-à-porter e noções da psicanálise. Como fatores positivos, constatou-se o potencial de ampliação das formas de sociabilidade, de aprendizagem, de empoderamento e de elaboração psíquica. Por outro lado, evidenciaram-se o risco de inversão do tempo de produção e de socialização e a ocorrência do sentido de vigiar e ser vigiado. Os resultados ressaltam ainda outros elementos da subjetividade dos usuários que se tornaram visíveis e articuláveis por meio de textos e imagens, trazendo consigo novos desafios não somente para o dispositivo psicoanalítico e para aqueles que atuam com saúde mental, mas também para os demais profissionais de áreas afins à psicologia, educação e saúde.
COMUNICAÇÃO EM ONCOLOGIA: UMA ANÁLISE QUALITATIVA SOB O ENFOQUE PSICANALÍTICO
Authors: Castro Elisa Kern de , Bianchini Daniela , Peuker Ana Carolina , Bittencourt Romeiro Fernanda
Published: September 2016

Trata-se de um estudo qualitativo exploratório sobre a percepção de pacientes com câncer e a comunicação com sua equipe de saúde. Foram entrevistados 14 pacientes em tratamento oncológico em diferentes estágios da doença. Os instrumentos utilizados foram: ficha de dados sociodemográficos e entrevista semiestruturada. As entrevistas foram gravadas em áudio e transcritas na íntegra. Os dados foram assim analisados: leitura inicial sem julgamentos (“naive”); análise estrutural e categorização do conteúdo; interpretação crítica e discussão. Dois juízes independentes avaliaram os conteúdos das entrevistas e realizou-se o índice de concordância (Kappa=0,834). Foram criadas três categorias sobre a comunicação: 1) comunicação técnica; 2) comunicação técnica com suporte emocional; 3) comunicação insuficiente. O embasamento psicanalítico utilizado ofereceu uma visão compreensiva dessa temática e uniu aspectos subjetivos do adoecimento com as evidências empíricas. Os resultados demonstraram que a comunicação com suporte emocional contribuiu para maior satisfação e saúde psicológica do paciente durante o tratamento oncológico. Sensação de bem-estar e amparo foram sentimentos apontados pelos pacientes ao experienciarem esse tipo de comunicação. A comunicação técnica com suporte emocional fornece ao paciente confiança na realidade e amplia a esperança na vida e conforto perante a morte. Percepções mais negativas em relação à comunicação com os profissionais de saúde estavam vinculadas às falhas na troca de informações, sensação de distanciamento emocional e ausência de interesse por aspectos pessoais do paciente.
HIPNOSE CLÍNICA E DORES CRÔNICAS: RUMO A UMA PERSPECTIVA COMPLEXA
Authors: Neubern Mauricio Da Silva
Published: September 2016

O presente trabalho busca construir noções teóricas iniciais baseadas no pensamento complexo de Edgar Morin para uma compreensão alternativa das relações entre hipnose e dores crônicas. Partindo de uma crítica ao pensamento instrumentalista dominante no campo, marcado pela simplificação, foca dois eixos principais: a) subjetividade e animalidade como campos possíveis e distintos para a qualificação das dores crônicas e b) as relações entre sujeito, processos inconscientes e mudança durante a hipnose. O trabalho é concluído destacando a pertinência de algumas noções complexas para o tema: o holograma, que destaca as múltiplas influências socioculturais e biológicas, contrapondo-se à perspectiva individualista sobre a dor e a hipnose; que a organização configuracional, destacando o aspecto singular da produção semiótica do sujeito e as lógicas particulares dos campos subjetividade e animalidade; e consciência que, enquanto qualidade emergente no transe, situa o sujeito na condição de mediador e não de controlador da experiência de dores crônicas.
Macroscopic Modelling of Flow-Drill Screw Connections
Authors: Sønstabø Johan Kolstø , Morin David , Langseth Magnus
Published: September 2016

This study focuses on the modelling of Flow-Drill Screw (FDS) connections in large-scale shell analyses. Macroscopic connection models for large-scale crash simulations were assessed for modelling of FDS connections between two aluminium plates. Of the investigated models were two commercial element-based and three commercial constraint-based models, as well as two new user-defined element-based models. All models were calibrated using cross tests in tension, shear and a mixed shear/tension mode. In order to assess the flexibility of the models two sets of experimental data were used. In the first one, a small screw was used to join two sheets of the same rolled alloy while the second set used a longer screw with a larger head to join a rolled alloy to an extrusion. The calibrated models were validated using a two-step approach involving benchmark and component tests. Of the commercial models, the constraint-based performed better than the element-based. The new user-defined models gave similar results as the commercial constraint-based models. From the obtained results, recommendations for modelling of FDS connections for large-scale analyses were formulated.
On the Investigation of the Portevin-Le Chatelier Effect in the Rolling of AA 5083
Authors: Astarita Antonello , Liberini Mariacira , Velotti Carla , Sinagra Ciro , Squillace Antonino
Published: September 2016

The aim of this paper is to investigate about the Portevin-Le Chatelier Effect (PLC) on a AA 5083 sheet. In order to study the minimizing of the PLC effect, three different rolling cyles have been carried out and an experimental campaign on the three different AA 5083 rolled has been carried out. In particular, the experimental campaign, to better understand the evolution of the phenomena during the rolling process, is based on: microstructural analysis, tensile tests and fractographic observations. Finally it has been found that the greater grain size the smaller the PLC effect, even if this effect cannot be totally removed, furthermore the PLC effect occurs only in the rolling direction. The best rolling cycle is the one that provide a hot rolling until 4mm, then a cold rolling up to 2mm and a final heat treatment of annealing.
Microstructure and Mechanical Properties of a New Secondary AlSi10MnMg(Fe) Alloy for Ductile High Pressure Die Casting Parts for the Automotive Industry
Authors: Niklas Andrea , Baquedano Asier , Orden Sergio , Noguès Eulalia , Da Silva Manel , Fernández-Calvo Ana Isabel
Published: September 2016

Primary AlSi10MnMg alloy is the most widely used alloy for manufacturing of vacuum assisted high pressure die castings (VPDC) with high ductility requirements. In this alloy, die soldering is avoided by a high Mn level (0.5 - 0.6 wt. %) while Fe is kept low (< 0.25 wt. %). Such combination guarantees that the Al-Fe-Mn-Si intermetallic compounds are of the α-iron rich polyhedral or Chinese script type, which is less harmful to the ductility. However, secondary alloys are cheaper and their production requires less energy than the one of primary alloys. The higher amount of Fe, a common impurity in secondary alloys, reduces ductility but also die soldering and thus manufacturing costs. Microadditions based on Mn are known to be very effective in transforming the harmful needle/platelet shaped β-compounds into α-iron compounds with a less harmful morphology. In this work a secondary alloy with 0.60 wt. % Fe and different Mn microadditions has been cast in test parts with different wall thicknesses using VPDC technology. The Mn content of the new alloy has been optimized. Mechanical properties of the optimised alloy have been determined in different heat treatment conditions and been compared to the corresponding AlSi10MnMg primary alloy. Mechanical properties similar to those of the primary alloy have been achieved.
Numerical Non-Linear Behaviour of Aluminium Perforated Shear Walls: A Parametric Study
Authors: Formisano Antonio , Mazzolani Federico M.
Published: September 2016

Aluminium Plate Shear Walls (APSWs) are innovative systems able to confer to either new or existing structures a significant capacity to resist earthquake and wind loads. Many tests have shown that these devices may exhibit high strength, initial stiffness and ductility, as well as an excellent ability to dissipate energy. When full APSWs are used as bracing device of buildings, they may induce excessive stresses in the surrounding main structure where they are inserted, so to require the adoption of large cross-section profiles. For this reason, perforated panels, which are weakened by holes aiming at limiting the actions transmitted to the surrounding frame members, represent a valid alternative to full panels. In this work, aiming at showing the advantages of such devices, a FEM model of perforated panels has been calibrated on the basis of recent experimental tests. Subsequently, a parametric FEM analysis on different series of aluminium perforated panels, by changing the number and diameter of the holes, as well as the plate thickness, has been carried out with the aim to individuate the maximum shear strength offered by such devices with different opening percentages.
Overview of the Correlations between Process Parameters, Microstructure and Mechanical Properties of Reference Castings and Industrial Demonstrators
Authors: Battaglia Eleonora , Bonollo Franco , Fiorese Elena , Kral Giorgio
Published: September 2016

Among the Aluminum casting processes, High Pressure Die Casting (HPDC) is an efficient, versatile and economic way for producing large number of components. Nevertheless, because of the elevated amount of rejected castings, it is important to know which are the main causes of defect formation and their effects on microstructure and mechanical properties. This paper presents, within the European MUSIC project, an overview of the preliminary correlations obtained studying both castings with defect generator geometry, referred to as Horse-shoe Reference Castings, and industrial demonstrators, referred to as Gear Box Housing. The deduced correlations between static mechanical properties and casting defects highlighted interesting trends in both cases.
Aluminium Bridges
Authors: Joux Sebastien
Published: September 2016

Until recently a lack of knowledge and understanding of the structural advantages of aluminium has limited the use of the material in building and construction. Today, advances in engineering and standardization have improved our knowledge of this versatile material and it is becoming more widely accepted in many industries.This paper contains examples of structural applications where aluminum has been selected for bridge construction in Europe: The first project was launched and supported by the E.U. and forms part of the European Cycle Route Network development. The second bridge structure is part of the tourist development program launched by the city of Vitre in France
Analysis of Lowering Effects in Aluminum Single-Layer Latticed Dome with Temcor Joints
Authors: Xu Shuai , Chen Zhi Hua , Mazzolani Federico M.
Published: September 2016

The numerical analysis of a single-layer latticed dome has been carried out by using ANSYS, in order to evaluate the effect of influencing factors, like semi-rigidity of joint, buckling in compressed bars, load distribution and initial imperfections, which can produce important reductions of the load bearing capacity of these kind of structures. As a case study, the use of Temcor joint has been investigated. The characterization of the Temcor joint behavior to be introduced in the global model of the dome has been done by a FE model implemented on ABAQUS. The effects of the analyzed factors on the load-carrying capacity of the dome have been identified and useful suggestions for the design of this type of structures have been given.
Analysis of Aluminium Beam-to-Column Joints by the Component Method: Existing Studies and Research Needs
Authors: De Matteis Gianfranco , Brando Giuseppe
Published: September 2016

This paper aims at providing an overview on the current state of the art and on possible future developments concerning the component method implementation for the classification of beam-to-column joints belonging to aluminum moment resisting frames.After a brief discussion on the component method theoretical bases, developed in the past to give a feasible calculation procedure for steel joints, recent experimental and numerical studies, carried out for investigating some aluminum components, are presented and discussed. In particular strengths and weaknesses of the current knowledge are put into evidence, also in light of the peculiarities that make aluminum alloys different from steel. The launch of new research fields, aimed at pursuing an update of the current codes dealing with aluminum structures, is therefore proposed.
Localized Corrosion Resistance of Dissimilar Aluminum Alloys Joined by Friction Stir Welding (FSW)
Authors: Bugarin Aline F.S. , Queiroz Fernanda Martins , Terada Maysa , De Melo Hercílio G. , Costa Isolda
Published: September 2016

2XXX and 7XXX high strength aluminum alloys are the most used materials for structural parts of aircrafts due to their high strength/weight ratio. Their joining procedure is an engineering challenge since they present low weldability. Friction Stir Welding (FSW) is a joining technology developed in the early 90 ́s. It is a solid-state welding process, without the use of fillers or gas shield, that eliminates conventional welding defects and has been considered of great interest for application in the aircraft industry. FSW of aluminum alloys results in four regions of different microstructures, specifically: the base material (BM), the heat affected zone (HAZ), the thermo-mechanically affected zone (TMAZ), and the nugget zone (NZ). The complex microstructure of the weld region leads to higher susceptibility to localized corrosion as compared to the BM even when similar alloys are joined. The welding of dissimilar alloys in its turn results in even more complex microstructures as materials with intrinsically different composition, microstructures and electrochemical properties are put in close contact. Despite the great interest in FSW, up to now, only few corrosion studies have been carried out for characterization of the corrosion resistance of dissimilar Al alloys welded by FSW. The aim of this study is to investigate the corrosion behavior of aluminum alloy 2024-T3 (AA2024-T3) welded to aluminum alloy 7475-T761 (AA7475-T761) by FSW. The evaluation was performed in 0.01 mol.L-1 by means of open circuit potential measurements, polarization techniques and surface observation after corrosion tests.
Direct Methods of Plasticity in Aluminium Frames Accounting for Eurocode 9 Failure Criteria
Authors: Ampatzis Alexios T. , Psomiadis Vasileios G. , Efthymiou Evangelos
Published: September 2016

Metal structures, given their broad plastic deformation capacity, have been often at the core of research for the evaluation of the post elastic behavior via the direct methods of plasticity. Limit and shakedown analysis were often exploited to determine the plastic collapse load capacity, as they provide advantages in terms of computational robustness in comparison with incremental non-linear analysis. The aforementioned approach has been widely and effectively applied for steel structures, characterized by rigid-plastic behavior. Υet in the case of aluminium structures, there are special parameters to be considered, as they exhibit a relationship of round-house type, whose trend cannot be interpreted through the classic elastic-perfectly plastic material law idealization.The present paper aims to develop a limit and shakedown analysis formulation suitable for the safety assessment of 3D aluminium frame structures against plastic collapse. Research yielded the proposed two-surface methodology in the framework of stress resultant plasticity, which is capable of estimating the plastic collapse limit state of real-life aluminium frames, incorporating Eurocode 9 codified failure criteria and limited kinematic hardening. A numerical example of a 3D frame is realized utilizing the finite element method and the 3-node Timoshenko column-beam element, in order to showcase the proposed methodology and validate the influence of hardening effect.
Performance of Friction Stir Welded Tailor Welded Blanks in AA5059 and AA6082 Alloys for Marine Applications
Authors: Feistauer Eduardo E. , Bergmann Luciano , Dos Santos Jorge Fernandez
Published: September 2016

Tailor welded blank (TWB) concepts in aluminum alloys, welded by friction stir welding (FSW), are an attractive solution to reduce structural weight of structures applied on the transportation sector. In the present work the mechanical performance and microstructural features of dissimilar friction stir welded TWBs were assessed. Welds were produced with alloys of particular interest to the shipbuilding sector (AA6082 and AA5083, with a thickness combination of 6 and 8 mm respectively) and the effect of rotational speed on the weld properties was investigated. A digital image correlation system (DIC) was used to characterize the local strain fields during the quasi-static tensile tests. Microstructure analysis revealed the presence of a remnant oxide line (ROL) at the stir zone. Moreover, the rotational speed directly affected the ROL distribution and consequently the mechanical properties of the welds. The TWB produced with low rotation speed and high force (600 rpm and 20kN) has shown the highest mechanical performance and failed at the thermo-mechanical affected zone of the AA6082 plate. The micromechanisms of fracture were assessed by SEM and revealed a ductile fracture with large amounts of dimples spread out on the fracture surface.
Practical Design of Aluminium Silos According to EC9-1-5
Authors: Knoedel Peter , Ummenhofer Thomas
Published: September 2016

Within the code-family of the Eurocodes, provisions for aluminium shells are given in EN 1999-1-5 (EC9) [1]. EC9-1-5 is listed in the Bavarian List of Technical Building Regulations. Thus, in Bavaria as well as in other Federal States of Germany it is mandatory to use EC9-1-5 for the verification of silos. A typical aluminium silo for industrial products might have a diameter of 3 m, a bin height of 10 m and wall thicknesses of 4 mm / 5 mm. The aluminium alloy EN AW-5754 [Al Mg3] O/H111 (EN 485-2 [2]) would be typical as well. Relevant for determining the required wall thickness is the buckling resistance under axial compression in the skirt and axial compression with coexisting internal pressure in the silo bin. When some obvious shortcomings in the formulae for coexisting internal pressure were investigated, it was found that there is a big discrepancy between scientific research, which has been done on the imperfection sensitivity of aluminium shells and the design equations in EC9-1-5. In the present paper an effort was made, in order to tackle these discrepancies and make clear, in which points the code needs amendment.