Made available in DSpace on 2014-12-17T15:41:47Z (GMT). No. of bitstreams: 1 AeciaSD.pdf: 4171408 bytes, checksum: b9c9bc4aed8af7d73b5b0b74a8b69ab1 (MD5) Previous issue date: 2009-09-02 / The aim of this study is to quantify the presence of major and minor elements in the sediments of estuary Potengi. Four georeferenced sampling points were used in the study, at which sediment samples were collected in the channel of the river and on the right and left banks. In addition, dissolved oxygen, salinity and water conductivity were taken in situ at the time of sample collection. The percentage of organic matter, determined by gravimetry, and granulometric analysis of the sediment samples were conducted in the laboratory. To quantify the major and minor elements a prior test to open the sample was conducted with standard NIST 1646? estuarine sediment to choose the best methodology to be adopted. The sediment samples were dissolved in microwaves with nitric acid and chloridric acid, according to methodology proposed by US EPA 3051?. Quantitative analyses of the elements Al, Fe, Cd, Cr, Cu, Mn, Ni, Pb and Zn were conducted by inductively coupled plasma optical emission spectrometry (ICPOES). The results showed that the partial concentrations of the elements analyzed are below average worldwide shale levels, the standard described by Turekian and Wedepohl (1961) / Esse trabalho objetiva avaliar, por meio da quantifica??o, a presen?a dos elementos maiores e menores nos sedimentos do estu?rio Potengi. Para o estudo, foram definidos quatro pontos de amostragem georeferenciados, onde em cada um deles foram coletadas amostras de sedimento na calha do rio e nas margens esquerda e direita. Al?m disso, foram realizadas medidas de pH, oxig?nio dissolvido, salinidade e condutividade da ?gua in situ no momento da coleta. Em laborat?rio foram feitas determina??es da porcentagem de mat?ria org?nica por Gravimetria e an?lise granulom?trica nas amostras de sedimento. Para quantifica??o dos elementos maiores e menores foi realizado um teste pr?vio para abertura da amostra com um padr?o de sedimento estuarino NIST 1646a para escolha da melhor metodologia a ser adotada. As amostras de sedimento foram digeridas em microondas com ?cido n?trico e ?cido lor?drico segundo metodologia proposta pela US EPA 3051A. As an?lises quantitativas dos elementos Al, Fe, Cd, Cr, Cu, Mn, Ni, Pb e Zn foram realizadas por espectrometria de emiss?o ?tica com plasma acoplado indutivamente (ICP-OES). Atrav?s destas observou-se que as concentra??es parciais dos elementos analisados est?o abaixo do folhelho padr?o tomado como m?dia mundial descritas por Turekian e Wedepohl (1961)

The time from onset of a cardiac arrest to defibrillation is crucial hence access to and use of a defibrillator by all nurses essential. The purpose of this study was to use an established theoretical framework to examine and describe the defibrillation practices and beliefs of rural registered nurses in the Australian state of Queensland. The Theory of Reasoned Action (TRA) and Theory of Planned Behaviour (TPB) guided the research processes for this two phase study. In the first phase, focus group (n = 13) discussions identified the salient beliefs of the population. By eliciting nurses' beliefs, the subsequent quantitative study (n = 434) was conducted to determine the influences of these beliefs on nurses' use or non-use of defibrillators. The results showed that: (1) less than half of the cohort of participants were permitted to defibrillate; (2) the defibrillation beliefs of those nurses permitted to defibrillate were significantly more positive than those not permitted to do so; (3) the direct measures of TPB and selected variables external to the model predicted a significant portion of the variance in the measure of nurse-initiated defibrillation intention; and, (4) subjective norm emerged as the strongest predictor of intention. In conclusion, Queensland rural hospital nurses and employers still have some distance to travel down the path of nurse-initiated defibrillation. The TPB is a viable framework on which to base interventions designed to promote defibrillation by rural nurses. Understanding the role of social norms is of central importance to ensure all nurses can initiate the chain of survival expeditiously whenever the need arises.

Adopting new technologies enable enterprises to improve employees¡¦ performance and competitive advantages. The differences in natures of adopting processes of organizations and individuals need further clarify for better understandings regarding to their framework in adopting new technologies. This paper based on the Theory of Reasoned Action (TRA) and existed research to construct the relations amongst the effective factors which affect the adopting new technologies in either individual or organization perspectives. In the individual level, the constructed research framework indicated employees¡¦ e-Learning satisfaction could be measured by three major dimensions, the perceived e-Learning qualities, individual internal beliefs (usefulness and ease of use), and social influence. Eight proposed hypothesis were confirmed by Structured Equation Modeling analysis of 428 valid samples. Path analyses verified the original path in TRA, TAM, and D&M ISS Model. The perceived e-Learning qualities and social influence cause significantly influence to employees¡¦ e-Learning satisfaction in both directly and indirectly, which by way of individual internal beliefs, positive paths. The results also showed that perceived information quality, usefulness, system quality, social influence, ease of use, and than service quality positively affect employees¡¦ satisfaction of e-Learning in descend sequences. Where, in the organization level, decision framework of adopting new technology of oil refinery was composed by modified Delphi method and was verified by Analytic Network Process from the survey of 15 experts. The consistency opinions confirmed four inter-depended dimensions and seventeen criteria were included. The results suggested that process fitness, environmental fitness, actors¡¦ organizational fitness, and new technology characteristics are important dimensions of adopting new technology in descend sequences. On the other hand, economic feasibility, relative advantages, government, environment acceptance, and engineering feasibility are the top five important factors to be evaluated during the adopting process. The different natures of adopting processes of organizations and individuals cause their different framework in adopting new technologies. This paper concluded that new technology, actors¡¦, environmental characteristics are three interdepended dimensions which influence the adopting behavior no matter in individual or organization context. In organization level of oil refinery case, actors¡¦ characteristics consist not only of actors¡¦ organizational fitness but also process fitness, which is the most important dimension while adopting new technology. In final, the implications of findings were discussed and directions were also suggested for future research.

Il legislatore, con la previsione di cui al comma 4- ter dell'art. 3 del d.l. 10 febbraio 2009, n. 5, convertito con modificazioni dalla legge 9 aprile 2009, n. 33, e sostituito dall'art. 42, comma 2-bis del d.l. 31 maggio 2010 n. 78, ha introdotto una nuova figura contrattuale avente la chiara finalità di favorire lo sviluppo dell'economia del paese. Il lavoro, partendo da una ricognizione empirica dei singoli contratti effettivamente stipulati, intende procedere ad una ricostruzione economicagiuridico del nuovo strumento della rete contrattuale tra imprese, fondandola sulla possibilità di costituire rapporti orizzontali tra partecipanti, che il legislatore ha espressamente previsto nella disciplina di legge, intendendosi tali tutte le obbligazioni che vengono assunte, al fine di realizzare il «programma comune di rete», da parte di uno o più degli aderenti nei confronti e a favore di uno o più degli altri partecipanti. Tale ricerca, anzitutto, verifica nel primo capitolo, la rilevanza che i rapporti orizzontali costituibili all'interno del nuovo contratto possono avere nel raggiungimento dei fini di politica economica perseguiti dalla norma: a tal fine si procede, dunque, sinteticamente all'analisi delle caratteristiche del sistema economico italiano, individuando i concetti economici e giuridici di “distretto” e “rete fattuale di imprese” ed evidenziando come gli stessi siano fondati su relazioni economiche recepibili in forma di rapporti orizzontali tra partecipanti al nuovo strumento contrattuale e si accerta che la potenzialità/effettività/volontariatetà di questi ultimi permette di tracciare il confine tra le stesse figure. La ricerca prosegue, poi, a verificare se la previsione di tali rapporti orizzontali tra i partecipanti - permettendo, al nuovo strumento contrattuale, di recepire a livello giuiridico la effettiva struttura economica delle modalità produttive a rete del nostro paese (distretti e reti fattuali d'impresa) - sia rilevante rispetto alla politica economica legislativa ed individua quali vantaggi ciò possa generare a livello di economie esterne alle singole imprese aderenti, ma interne alla rete stessa (in particolare rispetto alla finanziabilità delle imprese partecipanti alle reti). Appurato che, almeno in via teorica, la possibilità di costituire rapporti orizzontali tra partecipanti può essere utile nel perseguimento della finalità di politica economica, si procede a comprendere quanto tale previsione abbia comportato nella strutturazione giuridica del contratto. Nel secondo capitolo, riprendendo l'analisi delle attuali categorie contrattuali e considerata anche la loro evoluzione, si ricostruisce, da un punto di vista dogmatico-giuridico, il contratto di rete e, analizzando ed escludendo quelle teorie che attribuiscono allo stesso una natura “ibrida” ed una sua possibile riconducibilità ai contratti di scambio, si evidenziano tutte le motivazioni che portano a ritenerlo sempre e comunque un contratto associativo. Dato atto di ciò, ripercorrendo le caratteristiche di questa categoria contrattuale, nella ricerca si procede ad evidenziare le problematiche conseguenti all'applicazione delle norme di cui agli artt. 1420, 1446, 1459 e 1466 c.c., espressamente richiamate dal legislatore: tali norme, nate per disciplinare contratti che prevedono esclusivamente rapporti verticali tra l'ente e gli associati (caratterizzati, pertanto, esclusivamente da un “sinallagma per partecipazione”) appaiono non del tutto adeguate a regolare un contratto ove, in presenza di rapporti orizzontali, sussiste anche una sinallagmaticità “per corrispettività”, la quale rende necessaria una riconsiderazione dei criteri interpretativi delle suddette norme, che permetta di offrire adeguate tutele ad ogni interesse contrattuale. La terza parte analizza se, all'interno della categoria dei contratti associativi, la rete contrattuale sia un contratto del tutto nuovo ovvero se sia riconducibile a preesistenti figure e, nel caso, entro quali limiti: nel procedere a tale esame, tenendo conto che il dettato legislativo contiene un espresso riferimento ad alcune norme che disciplinano il fondo comune consortile, si verifica se sia giustificabile una riconduzione della rete contrattuale all'interno della generale tipologia consortile, evidenziando, peraltro, che i rapporti orizzontali permettono di qualificarla come nuova tipologia consortile, che offre strumenti ulteriori rispetto a quelle preesistenti e che la presenza di tali rapporti è di ostacolo alla possibilità che la rete possa assumere forme societarie. La conclusione del lavoro evidenzia che il legislatore, con l'introduzione del contratto di rete, ha introdotto una innovativa species associativa, riconducibile al genus consortile, consentendo, per la prima volta, che la strutturazione di un tale tipologia di contratto possa avvenire non solo attraverso gli abituali rapporti verticali, che obbligano i partecipanti nei confronti dell'ente, ma, pure, attraverso rapporti orizzontali, i quali concorrono, insieme con gli ordinari rapporti verticali, a rendere possibile, anche attraverso la combinazione delle attività dei partecipanti e lo scambio tra di essi sia di prestazioni sia di risorse, la realizzazione dell'attività volta al perseguimento dello scopo comune del contratto in questione. / The Legislator, with the provision of paragraph 4-ter art. 3 of d.l. February 10, 2009, No 5, converted with some amendments by the law “April 9, 2009, No 33”, and replaced by. Art.42, paragraph 2-bis of the d.l. nr. 78 of May 31st 2010, has introduced a new figure of contract with the clear aim of promoting the development of the Country. The work, starting from an empirical survey of individual contracts actually concluded, intends to define under new legal and economic background the new instrument of the network contract between companies, establishing the possibility of establishing horizontal relations between participants, that the Legislator has expressly provided for in the common law, meaning such network as all the obbligations that are taken in order to realize the "joint network program”, by one or more of its members against and in favor of one or more other participants. This research, first of all, shows in the first chapter, the relevance that horizontal relations established within the new contract may have in achieving the goals of economic policy pursued by the law: to this end we proceed, therefore, in a brief analysis of the characteristics the Italian economic system, identifying the economic and legal concepts of "district" and "factual business network" and pointing out that the same are based on economic relations that can be represented in the form of horizontal relations between participants in the new contractual instrument. This research verifies that the potentiality/ effectiveness/volontariaty of the latter allows you to draw the line between the same figures. The research continues, then, to verify if the prediction of such horizontal relationships among the participants - allowing, to this new type of contract, to transpose in a giuridical way the actual economic structure of our country's production structure (business districts and de-facto networks of compaies) - is material in relation to legislative economical policy and identifies what benefits it may be generated in terms of external economies at the level of individual member company, but internal to the network itself (in particular with respect to the improved credit eligibility of the firms participating in networks). Having verified that, at least in theory, the possibility of establishing horizontal relations between participants can be helpful in pursuing the aim of economic policy, we proceed to understand how this provision has resulted in the legal structuring of the contract. In the second chapter, continuing the analysis of the current contract categories and considered also their evolution, is defined, from a legal-dogmatic point of view, the “network contract”, and analyzing and excluding those theories which attribute to it an “hybrid” nature and its possible link to exchange contracts, the research highlights all the reasons that lead us to conclude that it has always to be considered an associative contract. Because of this act, recapitulating the features of this contract category, the research proceeds to highlight the problems connected to application of Articles. 1420, 1446, 1459 and 1466 cc, expressly cited by the Legislator: such articles, created to regulate contracts involving only vertical relationships between the “entity” and the “associates” are not the entirely adequate to set a contract with horizontal relations, which requires a reconsideration of the criteria for interpretation of those rules, which allows to offer adequate protection to any contractual interest. The third part analyzes whether, within the category of associative contracts, the network contract is a new kind of contract or whether it is reconductable to existing contractual types and, if so, to what extent: in making such examination, taking into account that the legislation contains a specific reference to certain rules governing the mutual fund, it is verified if the network contract can be justified within the general type of consortium contract, emphasizing, however, that the horizontal relationship qualify it as a new type of consortium, which offers more than existing tools and that the presence of such relationships is an obstacle to the possibility that the network contract can assume societary forms. The conclusion of this paper stresses that the Legislator, with the introduction of the network contract, has introduced an innovative associative species, reconductable to that of a consortium, allowing, for the first time, that the structuring of such a type of contract can occur not only through the usual vertical relationships, which formally link the participants with the Entity, but also through horizontal relationships, which contribute, together with the ordinary vertical relationships, to make possible, through the combination of the activities of participants and the exchange between them of both performances or resources, the implementation of activities aimed at achieving the common purpose of the contract in question

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-15T21:40:49Z No. of bitstreams: 1 VirginiaBezerraOliveiraCampos_DISSERT.pdf: 3793113 bytes, checksum: 4435d7d3c46fc8d73615a9b23cd0e5f4 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-17T15:55:28Z (GMT) No. of bitstreams: 1 VirginiaBezerraOliveiraCampos_DISSERT.pdf: 3793113 bytes, checksum: 4435d7d3c46fc8d73615a9b23cd0e5f4 (MD5) / Made available in DSpace on 2018-01-17T15:55:28Z (GMT). No. of bitstreams: 1 VirginiaBezerraOliveiraCampos_DISSERT.pdf: 3793113 bytes, checksum: 4435d7d3c46fc8d73615a9b23cd0e5f4 (MD5) Previous issue date: 2017-08-10 / A constante busca de materiais mais eficientes e com alto desempenho mec?nico, contribue efetivamente para a crescente demanda na utiliza??o de comp?sitos h?bridos. O processo de hibridiza??o pode propiciar melhoria significativa na combina??o global de propriedades, possibilitando assim aplica??es espec?ficas em elementos estruturais que requerem excel?ncia em suas propriedades mec?nicas e baixa massa espec?fica. Atrelado ? gradativa utiliza??o destes materiais, estudos que incidem nas previs?es de falha e, consequentemente, an?lises das cargas m?ximas que estes materiais podem suportar tornam-se essenciais para garantia da confiabilidade quanto a sua aplica??o. Neste sentido, a presente pesquisa buscou analisar o comportamento mec?nico de uma l?mina constitu?da ? base de tecido h?brido bidirecional (vidro/carbono) e resina ep?xi ?ster-vin?lica. Bem como, avaliar a representatividade de crit?rios de falhas desenvolvidos para comp?sitos unidirecionais quando aplicados em comp?sito h?brido de natureza bidirecional. A l?mina estudada foi caracterizada mecanicamente com base nos resultados obtidos pelos ensaios de tra??o e cisalhamento realizados em amostras com fibras de carbono orientadas a 0?, 30?, 45?, 60? e 90?. Observou-se a partir destes ensaios que materiais com fibras em ?ngulos fora do eixo (off-axis) de aplica??o de carga apresentam resist?ncia menor, embora apresentem maiores alongamentos, quando comparados a amostras com fibras alinhadas na dire??o principal do carregamento. Os dados experimentais referentes ?s propriedades cisalhantes, normatizados pela ASTM D3518M-13 (ensaio de cisalhamento por tra??o ?45?) e ASTM D5379-12 (ensaio de Iosipescu), apresentaram diferen?as significativas para a resist?ncia ao cisalhamento e similaridade nos valores do m?dulo de cisalhamento. O ensaio de tra??o ?45?, conforme an?lise macromec?nica, mostrou-se como o mais adequado para comp?sito com caracter?sticas similares ao analisado. Ao inserir os dados dos ensaios nas equa??es te?ricas que definem os crit?rios de falhas da M?xima Tens?o, Tsai-Hill, Tsai-Wu e Hashin e, analis?-los estatisticamente, contatou-se que estas teorias de falhas descrevem satisfatoriamente o comportamento experimental da l?mina, e, portanto, podem ser utilizados para predizer a resist?ncia mec?nica em comp?sitos como o avaliado, embora se tenha observado ?ndices de representatividade maiores quando se utiliza o ensaio de cisalhamento por tra??o ?45?. / The constant search for more efficient materials and with high mechanical performance, contributes effectively to the growing demand in the use of hybrid composites. The hybridization process can provide significant improvement in the overall combination of properties, thus enabling specific applications in structural elements that require excellence in their mechanical properties and low specific mass. Coupled with the gradual use of these materials, studies that focus on fault predictions and, consequently, analyzes of the maximum loads that these materials can withstand become essential to guarantee the reliability of their application. In this sense, the present research sought to analyze the mechanical behavior of laminae composed of two-way hybrid fabric (glass/carbon) and epoxy resin vinyl ester. As well as evaluating the representativeness of failure criteria developed for unidirectional composites when applied in hybrid composites of a bidirectional nature. The laminas studied were mechanically characterized based on the results obtained by tensile and shear tests performed on samples with carbon fibers orientated at 0?, 30?, 45?, 60? and 90?. It was observed from these tests that materials with fibers at off-axis loading angles exhibit lower strength, although they exhibit greater elongations when compared to samples with fibers aligned in the main direction of loading. Experimental data on shear properties, standardized by ASTM D3518M-13 (tensile shear test ?45?) and ASTM D5379-12 (Iosipescu's test), showed significant differences for shear strength and similarity in the modulus values of Shear. The tensile test ? 45?, according to macromechanical analysis, proved to be the most suitable for composite with characteristics similar to the one analyzed. By inserting test data into the theoretical equations defining Tsai-Hill, Tsai-Wu, and Hashin fault criteria, and statistically analyzing them, it was found that these fault theories satisfactorily describe the experimental behavior of the blade , and therefore can be used to predict mechanical strength in composites as evaluated, although higher representativity indices were observed when using the ? 45? traction shear test.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-10-11T22:03:58Z No. of bitstreams: 1 MoniqueBezerraPazLeitao_TESE.pdf: 11056144 bytes, checksum: 978892fd0142f3723b3084ebbd726901 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-10-17T21:24:59Z (GMT) No. of bitstreams: 1 MoniqueBezerraPazLeitao_TESE.pdf: 11056144 bytes, checksum: 978892fd0142f3723b3084ebbd726901 (MD5) / Made available in DSpace on 2016-10-17T21:24:59Z (GMT). No. of bitstreams: 1 MoniqueBezerraPazLeitao_TESE.pdf: 11056144 bytes, checksum: 978892fd0142f3723b3084ebbd726901 (MD5) Previous issue date: 2015-12-18 / Beb?s e crian?as pequenas costumam ser considerados graciosos e despertar muito afeto. A tend?ncia de perceb?-los de modo positivo e a disposi??o em cuidar s?o atribu?das a tra?os f?sicos e comportamentais t?picos de um infante. Em humanos, caracter?sticas faciais como olhos grandes em rela??o ao rosto e cabe?a arredondada s?o importantes est?mulos. Alguns te?ricos defendem que a tend?ncia humana ? coopera??o tem ra?zes em mecanismos que evolu?ram para o cuidado ? prole, entretanto poucos estudos investigam as rela??es entre tra?os infantis, percep??o de fofura e coopera??o. Neste trabalho foram desenvolvidas quatro publica??es. A primeira investigou a influ?ncia da faixa et?ria e sexo na express?o de comportamentos cooperativos e competitivos e na percep??o de infantilidade por parte de indiv?duos mais velhos ao interagir com crian?as pequenas. Participaram 244 sujeitos (120 do sexo feminino) que interagiram em d?ades durante partidas do jogo da velha. Foram testadas as d?ades: Crian?a 4-5 x Crian?a 8-9 anos; Crian?a 4-5 x Adolescente 14-16 anos; Crian?a 4-5 x Adulto 25-35 anos. Crian?as entre 8-9 anos expressaram mais comportamentos competitivos, especialmente d?ades de sexo opostos, e adultos expressaram mais ajuda. Adolescentes e adultos tenderam a avaliar a crian?a pequena como mais fofinha, bonita e ing?nua. Quanto maior a avalia??o de fofura, menos competi??o por parte de crian?as de 8-9 anos e adultos. A segunda publica??o tratou da constru??o e valida??o do Child Neutral Expression Picture Set - CNEPS, um banco de faces composto por imagens de 131 crian?as entre 4-5 anos, com express?o facial neutra. Ap?s a captura, edi??o e normaliza??o, as imagens foram avaliadas por especialistas, sendo em geral consideradas com express?o neutra. A terceira publica??o teve como objetivo medir e relacionar diversos tra?os faciais infantis das imagens de crian?as entre 4-5 anos com a percep??es de fofura, os comportamentos competitivos e cooperativos no jogo dirigidos a estas crian?as por parte de sujeitos de diferentes idades. Os sujeitos e o m?todo foram os mesmos descritos na primeira publica??o, acrescidos da medi??o dos tra?os. O estudo ? inovador por mostrar que a percep??o e frequ?ncia de competi??o e ajuda variam de acordo com a intensidade de certos tra?os em todas as faixas et?rias. Nas crian?as de 8-9 anos, os tra?os relacionaram-se ? percep??o de fofura, nos adolescentes tanto ?s percep??es e como ? inibi??o de competi??o. Nos adultos os tra?os correlacionaram com mais ajuda. A quarta publica??o ? uma nota t?cnica que descreve v?rios bancos de imagens faciais de crian?as e adultos dispon?veis para pesquisas cient?ficas. Em s?ntese, a presente tese mostrou que ao longo do desenvolvimento, os indiv?duos tendem a agir mais cooperativamente com crian?as pequenas e de avali?-las de modo mais positivo e que os tra?os infantis espec?ficos influenciam a diminui??o da competitividade e aumento da coopera??o. Entende-se que diversas adapta??es cognitivas e comportamentais foram favorecidas durante a evolu??o humana para promover cuidado e prote??o de indiv?duos imaturos, especialmente considerando o alto n?vel de depend?ncia e o longo per?odo de cuidado exigido pelos nossos infantes. / Babies and young children are often considered graceful and evoke much affection. The tendency to perceive them in a positive manner and the propensity to care for them are assigned to physical and behavioral traits typical of an infant. In humans, facial features such as large eyes relative to the face and rounded head are important stimuli. Some theorists argue that the human cooperation tendency is rooted in mechanisms that have evolved to care for offspring, however few studies investigated the relationship between children's traits, perceptions of cuteness and cooperation. In this work it was developed four publications. The first investigated the influence of age range and sex in the expression of cooperative and competitive behaviors and perception of childishness on the part of older individuals by interacting with young children. Took part of the study 244 subjects (120 females) who interacted in dyads during tic-tac-toe matches. Dyads tested were: Child 4-5 x Child 8-9 years old; Child 4-5 x Adolescent 14-16 years old; Child 4-5 x Adult 25-35 years old. Children aged 8-9 years expressed more competitive behavior, especially dyads of opposite sex, and adults expressed more help. Adolescents and adults tended to evaluate the young child as cuter, more beautiful and more na?ve. The higher the cuteness evaluation, the lower competition by children aged 8-9 years and adults. The second publication describes the construction and validation of the Child Neutral Expression Picture Set - CNEPS, a database face made up of images of 131 children between 4-5 years old with neutral facial expression. After capturing, editing and standardizing, the images were evaluated by experts, generally being considered with neutral expression. The third publication aimed to measure and correlate the facial infant traits of children's image with positive perceptions, competitive and cooperative behaviors in the game toward these children by subjects of different ages. The subjects and method were the same used in the first publication, adding the traits' measurement. The study is innovative by showing that the perception and frequency of competition and helping vary according to the intensity of certain baby schema traits in all age groups. Among children 8-9 years old the traits correlated to the perception of cuteness, among the adolescents they were related to both the positive perception and competition inhibition. In adults, the traits correlated with more help. The fourth publication is a technical note describing datasets of facial images of children and adults available for scientific research. In summary, this thesis showed that across the lifespan, individuals tend to act more cooperatively with small children, evaluate them more positively and that specific infant traits influence the decreased competitiveness and increased cooperation. It is understood that several cognitive and behavioral adaptations were favored during human evolution to promote care and protection of immature individuals, especially considering the high level of dependency and long-term care required by our infants.

Purpose – This thesis aimed at investigating students’ beliefs influencing their personal attitudes and subjective norms not to choose the accounting profession by using the simplified Theory of Reasoned Action (TRA) model. Theoretical framework – This study used the simplified TRA model to investigate the beliefs that influence students not to choose the accounting profession. From an accounting context, prior research has indicated that, there are intrinsic and extrinsic factors that determine the behavioural beliefs of students about the accounting profession. Likewise, normative beliefs are another construct of the simplified TRA model that influences students’ intentions towards the accounting profession. Methodology – Through a quantitative approach, questionnaires were sent electronically to first and second year students at five major universities in Sweden. In total, 323 students replied to the questionnaire. Since this study focused on students intending to choose business administration, non-business administration students were deleted from the sample giving an actual sample size of 228. The data collected was analyzed in two steps using multiple regression analysis. Findings – The findings of the study confirmed the simplified TRA model. The results showed that both behavioural and normative beliefs influenced students’ intentions not to choose the accounting profession. For behavioral beliefs, no personal interest in accounting, the belief that accounting is boring and the belief that other occupations (for instance, marketing and management) negatively influenced students’ attitudes not to choose the accounting profession. Similarly, for normative beliefs, teachers and peers influenced students’ subjective norms not to choose the accounting profession. Practical implications – The practical implications of this study are two-folded. Firstly, program directors at universities should engage in hiring qualified teachers in accounting, organize supportive activities to encourage students about the accounting profession. Also, program directors should include compulsory internships in the curriculum so that students can learn about the accounting profession. Secondly, former accounting students should get involved in the process of encouraging students about the accounting profession. Originality/value – This paper contributes to the existing literature by highlighting the beliefs influencing the personal attitudes and subjective norms of students not to choose the accounting profession. Therefore, the thesis provides an up-to-date theory about the TRA in the accounting profession in Sweden.

Submitted by Alex Sandro R?go (alex@ifpb.edu.br) on 2016-11-23T14:41:01Z No. of bitstreams: 1 Disserta??o -CARACTERIZA??O DE COBERTURA DE SINAIS NA FAIXA DE 700 MHZ EM AMBIENTES INDOOR- Niedson Almeida Lemos.pdf: 3735134 bytes, checksum: 79f539745b2c49c6611e113b63dc877e (MD5) / Approved for entry into archive by Alex Sandro R?go (alex@ifpb.edu.br) on 2016-11-23T14:42:00Z (GMT) No. of bitstreams: 1 Disserta??o -CARACTERIZA??O DE COBERTURA DE SINAIS NA FAIXA DE 700 MHZ EM AMBIENTES INDOOR- Niedson Almeida Lemos.pdf: 3735134 bytes, checksum: 79f539745b2c49c6611e113b63dc877e (MD5) / Made available in DSpace on 2016-11-23T14:42:00Z (GMT). No. of bitstreams: 1 Disserta??o -CARACTERIZA??O DE COBERTURA DE SINAIS NA FAIXA DE 700 MHZ EM AMBIENTES INDOOR- Niedson Almeida Lemos.pdf: 3735134 bytes, checksum: 79f539745b2c49c6611e113b63dc877e (MD5) Previous issue date: 2016-11-23 / O planejamento de novas redes de comunica??es sem fio, a exemplo da quarta gera??o de telefonia m?vel celular (4G), representa um grande desafio ao incluir servi?os cada vez mais avan?ados com diferentes requisitos de qualidade, suporte ? mobilidade, altas taxas de transmiss?o e capacidades de tr?fego elevadas. Os diversos ambientes nos quais essas redes operam e os fen?menos associados a eles produzem diversos efeitos no comportamento do sinal recebido e, consequentemente, uma varia??o no desempenho dos enlaces de comunica??o via radio. Por conseguinte, esses efeitos devem ser avaliados corretamente, de tal forma que o dimensionamento da rede atenda aos requisitos de qualidade regulamentados. O presente trabalho tem por objetivo estabelecer a caracteriza??o da cobertura de sinais de comunica??o sem fio em ambientes indoor na faixa de frequ?ncia em torno de 700 MHz. Essa banda foi escolhida devido a sua destina??o para ser utilizada pelos sistemas de comunica??o em banda larga 4G/LTE no Brasil. Desta forma, foram realizadas simula??es baseadas no m?todo do Tra?ado de Raios e medi??es para efeitos comparativos. As medi??es para caracteriza??o da cobertura e comportamento do sinal foram realizadas obtendo-se valores m?dios do sinal em intervalos regularmente espa?ados, de modo a se garantir uma menor influ?ncia do fen?meno de desvanecimento r?pido e uma maior espacialidade entre elas. A pesquisa considerou a aferi??o de valores abordando artif?cios como transmissores virtuais nas simula??es, posicionados no in?cio de cada corredor transversal, que consideraram como pot?ncia de sa?da a mesma pot?ncia aferida naquele ponto ou local, a partir do transmissor real. Deste modo, os resultados obtidos mostraram uma boa concord?ncia entre os valores simulados, medidos e te?ricos, calculados a partir da f?rmula de Friis, nas situa??es com visada e sem visada.

O Glioblastoma é um dos tumores mais agressivos do sistema nervoso central e entre as diversas neoplasias possui um dos piores prognósticos. Mesmo com as novas estratégias de tratamento, a sobrevida de pacientes portadores de glioblastoma continua sendo muito baixa, sendo a temozolomida (TMZ) o agente mais comum usado no seu tratamento. O ácido tetra-o-metil nordihidroguaiarético (M4N), é um novo agente terapêutico que funciona como um repressor transcricional global de genes dependentes do fator de transcrição Sp1, tais como Survivina e Cdk1. No presente estudo, foram investigados os níveis de expressão do gene Survivina, suas variantes gênicas por splicing alternativo e Cdk1 em amostras tumorais e linhagens celulares de GBM. Adicionalmente, foram investigados os efeitos do M4N em combinação ou não com TMZ e/ou radiação em culturas primárias e linhagens celulares de GBM. Ensaios de qRT-PCR foram realizados para determiner a expressão de mRNA das variantes gênicas de Survivina e Cdk1. A proliferação celular foi analisada pelo ensaio XTT e os niveis de apoptose e variações do ciclo celular foram determinados por citometría de fluxo. Analises de combinação de drogas utilizando diferentes estratégias de administração (simultânea e seqüencial) foram realizados baseados no método de Chou-Talalay em linhagens celulares e culturas primárias de GBM. Para os ensaios de sobrevivência clonogênica, foram utilizadas as doses de 2, 4 e 6 Gy de radiação gamma. Todas as variantes por splicing alternativo de Survivina e o gene Cdk1 foram expressos em amostras (n=16) e linhagens celulares (n=6) de GBM, exceto a variante Survivina-2B que apenas foi expressa nas linhagens celulares de GBM. O tratamento com M4N diminuiu a expressão de Cdk1, Survivina e a variante Survivina-Ex3, enquanto que houve um aumento da expressão da variante Survivina-2B. O M4N diminuiu a proliferação celular de forma isolada e sinérgicamente quando combinada com TMZ. Além disso, o M4N aumentou os efeitos da radiação, principalmente quando associado com TMZ. O M4N causou morte celular apoptótica, diminuição do índice mitótico e parada do ciclo celular principalmente na fase x G2/M. Os resultados do presente estudo sugerem a potencial aplicação clínica de M4N em combinação com TMZ e radiação no tratamento do GBM. / Glioblastoma (GBM), one of the most human malignant neoplasia, responds poorly to current treatment modalities, being temozolomide (TMZ) the most used drug in its treatment. TetraO-methyl Nordihydroguaiaretic Acid (M4N) is a global transcriptional repressor of genes dependents of Sp1 transcription factor, such as Survivin and Cdk1. In this study was evaluated the gene expression of Survivin, their spliced-variants and Cdk1 in GBM samples and cell lines. Moreover, it was investigated the effects of M4N combined or not with TMZ and/or radiation on primary cultures and cell lines of GBM. qRT-PCR assays were performed to determine the Survivin-spliced variants and Cdk1 gene mRNA expression in GBM tumor samples and cell lines. Cell proliferation was measured by XTT assay and cell cycle and apoptosis were determined by flow cytometry. Drug combination analyzes using different schedules of administration (simultaneous and sequential) were performed based in ChouTalalay method on GBM cell lines and primary cultures. For clonogenic survival, it was used the doses of 2, 4, and 6 Gy of gamma radiation. All Survivin-spliced variants and Cdk1 gene were expressed in GBM samples (n=16) and cell lines (n=6), except the Survivin-2B variant that was only expressed in GBM cell lines. M4N treatment down regulated the expression of Cdk1, Survivin and Survivin-Ex3 variant, while the Survivin-2B variant was up-regulated. M4N decreased the cell proliferation separately and synergistically with TMZ, moreover it enhanced the radiation effects, mainly when associated with TMZ. M4N also induced apoptotic cell death, decreased mitotic index and arrested the cell cycle mainly in G2/M phase. Our results suggest a potential clinical application of M4N in combination with TMZ and radiation in GB treatment.

Sociala medier och IT support, två områden som det ofta pratas om. Allt fler företag väljer att kombinera dessa två och låta sina kunder kontakta dem då de behöver IT support via sociala medier, detta fenomen kallas ’Social IT support’. Många människor, använder dagligen sociala medier dock är det oklart vad användare anser om att söka IT support via sociala medier. Denna uppsats syftar till att undersöka hur användaren ser på att söka IT support via sociala medier samt vid vilket tillfälle de hellre skulle använda sig av traditionell IT support så som telefon och e-post samt om användaren förräntar sig snabbare respons från företaget då de söker IT support via sociala medier. Undersökningarna som genomförts har syftat till att undersöka och granska vad verkliga individer tycker och tänker kring ämnet. Undersökningarna som genomfört har bestått av en strukturerad kvantitativ enkät med 102 respondenter samt en semi strukturerad kvalitativ intervju som har genomförts på fem individer. Resultatet som framkommit av undersökningen visar att majoriteten av respondenterna är positivt inställda till att prova på att söka IT support via sociala medier. Undersökningen visar också att det är de olika problemen som uppstår som påverkar om de väljer att söka IT support via sociala medier eller på det traditionella sättet. Resultatet visar även att de flesta respondenter förväntar sig snabbare kontakt från företaget då de sökt IT support via sociala medier än över telefon. Vilket är känt från tidigare forskning dock har skillnader från tidigare forskningar påträffats. Undersökningen visar även att män har högre förväntningar än kvinnor på hur lång tid det ska ta för ett företag att kontakta dem.