Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2014-11-04T14:17:31Z No. of bitstreams: 2 Dissertação - Raphael Matias da Silva - 2014.pdf: 1915356 bytes, checksum: 46210dde4f1e2691a46a9de1c7a3a31e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2014-11-04T14:19:11Z (GMT) No. of bitstreams: 2 Dissertação - Raphael Matias da Silva - 2014.pdf: 1915356 bytes, checksum: 46210dde4f1e2691a46a9de1c7a3a31e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2014-11-04T14:19:11Z (GMT). No. of bitstreams: 2 Dissertação - Raphael Matias da Silva - 2014.pdf: 1915356 bytes, checksum: 46210dde4f1e2691a46a9de1c7a3a31e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2014-02-27 / Ornithophilous plant species occur in greater number in the understory of tropical forests, with Acanthaceae as one of the major families with this pollination syndrome. However, several other angiosperm families have species pollinated by hummingbirds, which is the largest group of vertebrate pollinators of the Neotropic, besides being the most representative and specialized group of nectarivorous birds. The present study is organized into three chapters, with the following objectives: 1) Conduct a literature review, compiling information on the pollination and reproductive systems found in the family Acanthaceae Juss. in Brazil, 2) Assess the association between ornithophilous understory plants and hummingbirds in two fragments, evaluating potential levels of specialization according to the floral traits, 3) To investigate the pollination biology of Geissomeria pubescens Nees (Acanthaceae), including aspects of its morphology, floral biology, nectar energy availability and reproductive system. Four pollination syndromes were recorded in a total of 28 species of Acanthaceae family: ornithophily, melittophily, psicofilia and chiropterophily. The ornithophily was the predominant syndrome and, consequently, hummingbirds were the most common group of floral visitors. Regarding the reproductive system, 94.1% of the Acanthaceae species studied in Brazil are self-compatible. In the study of the community ecology of the ornithophilous plants, 12 species were recorded, with Acanthaceae being the principal ornithophilous family. Thalurania furcata was the hummingbird which interacted with the greatest number of species, being considered as a generalist. The average amount of sugar produced in the area, by the species, was the only factor associated with the visitation rate. This feature may be a consequence of the fact, that larger resource quantities represent greater attraction and greater abundance of hummingbirds that exploit these resources in the areas. G. pubescens was the ornithophilous species that offered the greatest amount of resources to hummingbirds in the studied area. Based only on the amount of available energy for this plant species, on a daily basis, the studied fragment can support up to 94.6 hummingbirds during its flowering peak. G. pubescens produced no fruit by agamospermy and self-spontaneous pollinations. Thus, these results demonstrate the importance of the hummingbirds (the unique visitors) in the pollen flow occurrence and therefore, in the fruit formation of the species. / Espécies ornitófilas são encontradas em maior número no sub-bosque de florestas tropicais, sendo Acanthaceae uma das principais famílias com esta síndrome de polinização. Entretanto, várias outras famílias de Angiospermas apresentam espécies polinizadas por beija-flores, sendo este o maior grupo de polinizadores vertebrados do Neotrópico, além de ser o grupo mais representativo e especializado de aves nectarívoras. O presente estudo está organizado em três capítulos, com os seguintes objetivos: 1) Realizar uma revisão teórica compilando informações sobre os sistemas de polinização e reprodutivos encontrados na família Acanthaceae Juss. no Brasil; 2) Analisar a associação entre as plantas ornitófilas de sub-bosque e beija-flores em dois fragmentos avaliando possíveis níveis de especialização de acordo com os atributos florais; 3) Investigar a biologia da polinização de Geissomeria pubescens Nees (Acanthaceae), incluindo aspectos da morfologia, biologia floral, disponibilidade energética do néctar e sistema reprodutivo. Foram registradas quatro síndromes de polinização em um total de 28 espécies da família Acanthaceae, sendo elas: ornitofilia, melitofilia, psicofilia e quiropterofilia, onde a ornitofilia foi a síndrome predominante e, consequentemente, beija-flores foi o grupo mais comum de visitantes florais. Quanto ao sistema reprodutivo, 94,1% das espécies de Acanthaceae estudadas no Brasil são autocompatíveis. No estudo da ecologia de comunidades de plantas ornitófilas, foram registradas 12 espécies, sendo Acanthaceae a principal família ornitófila. Thalurania furcata foi o beija-flor que interagiu com o maior número de espécies, sendo considerado generalista. A quantidade média de açúcar produzida na área, por espécie, foi o único fator relacionado com a taxa de visitação. Tal característica pode ser consequência das maiores quantidades de recurso gerar uma maior atração e maior abundância dos beija-flores na exploração dos recursos. G. pubescens é a espécie ornitófila que ofereceu a maior quantidade de recursos aos beija-flores. Baseado apenas na quantidade de energia disponível por esta espécie vegetal, o fragmento estudado pode suportar até 94,6 beija-flores, diariamente, durante o pico de floração. G. pubescens não produziu frutos por agamospermia e autopolinização espontânea. Com isso, estes resultados demonstram a importância dos beija-flores (únicos visitantes) para que ocorra fluxo de pólen e, consequentemente, formação de frutos na espécie.

Observa-se hoje o crescimento de programas de intervenção voltados à saúde e desenvolvimento infantil, com ênfase na participação familiar, daí a necessidade de aprofundar os conhecimentos sobre as famílias e seu contexto sócio-econômico-cultural. Baseada na Abordagem bioecológica de Bronfenbrenner, a pesquisa teve por objetivo a compreensão do cotidiano e das idéias dos pais sobre as práticas de cuidado e educação, em famílias de crianças com Paralisia Cerebral Diplégica Espástica (PC) e com Desenvolvimento Típico (DT), pertencentes a camadas populares. Participaram do trabalho 10 famílias, 5 delas com crianças que apresentavam diagnóstico de PC, sem retardo mental evidente, com idades entre 2 e 7 anos, atendidas em instituição de reabilitação de Salvador-BA, e 5 com características similares, cuja criança não apresentava esta patologia. As estratégias de coleta de dados incluíram: entrevistas estruturadas, direcionadas às mães e aos pais, realizadas em separado, gravadas e transcritas, observação naturalística do ambiente registrada em Diário de Campo, e observação da interação adulto-criança, nas situações de alimentação, banho e brincadeira, com registro contínuo. Os dados das observações do ambiente físico apontaram aspectos similares nas casas das crianças dos dois grupos, caracterizadas pela presença freqüente de obstáculos e barreiras arquitetônicas, condições estas pouco favoráveis ao trânsito de indivíduos com deficiência física. A análise do processo interativo mostra outras semelhanças entre os grupos: 1. Além das relações sintônicas, nos dois casos a maioria das crianças tende a ser responsável pela tarefa de alimentação e os adultos pelo banho, sugerindo que não apenas a deficiência física, mas outros fatores como o status da tarefa e a valorização da mesma possam estar interferindo na distribuição de responsabilidade. 2. Outro ponto de semelhança está na utilização da ordem, estratégia diretiva geralmente reportada na literatura como característica da interação de pais e crianças com deficiência, mas que no caso da presente pesquisa foi o recurso mais utilizado pelos adultos dos dois grupos, para levarem as crianças ao cumprimento da tarefa, principalmente na situação de banho; pergunta-se se este estilo parental não seria mais determinado pelo contexto sócio-cultural do que por características da criança. 3. A “brincadeira” foi amplamente reconhecida pelas mães como importante atividade na infância, mas elas não revelam muito envolvimento na mesma, exceto para sinalizar perigos ou inadequações. Por outro lado, as mães de crianças com PC se diferenciam das demais pela insatisfação com o desempenho dos filhos, principalmente no que tange aos hábitos de higiene e elas o consideram aquém do esperado devido à deficiência física, que também parece interferir na possibilidade de circulação da criança fora do ambiente doméstico (mais freqüente nas com DT). Nota-se, em geral, muita dificuldade dos participantes em conceituar PC, compreender suas causas e repercussões, mas todos vislumbram suas conseqüências negativas e associam a deficiência a idéias de fragilidade, tristeza e dependência, atribuindo-lhe um significado que transcende sua natureza puramente biológica, e apresentando outras representações, que provavelmente exercem influências na forma pela qual essas pessoas lidam com a criança com PC. Os pais relatam alguma participação nos cuidados e educação da criança, mas ainda concebem como sua principal função o prover a família. Ao avaliarem o sistema ideal de educação de filhos, as mães de ambos os grupos tendem a valorizar a afetividade extrema em detrimento da autoridade. Elas também destacam as explicações, os cuidados e a punição. Os pais, por sua vez, valorizam a afetividade, mas tendem a enfatizar em seu sistema ideal mais autoridade e exigência para aquelas com DT. A obediência é o principal atributo na concepção da “criança ideal”. A maioria das mães se auto-avalia como flexível na relação com os filhos e assinala como principal fonte de orientação para as práticas de educação sua própria experiência. Mães e pais revelam esforços de elaboração de suas vivências no processo de educar filhos, buscando não repetir situações que geraram sofrimento na sua infância. Esses resultados permitem discutir as inter-relações da PC e do contexto sócio cultural nas práticas de cuidado e educação da criança. / The growing in health and interventional programs for children, emphasizes the importance of family involvement, and, generates interest in amplifying deep knowledge regarding the families and their socio-economic-cultural context. Based on Bronfenbrenner´s bioecological model, this research aims to investigate day-to-day living reality, parents’ ideas of child rearing practices and education, in working class families with children with or without Cerebral Palsy. Ten families participated in this study, 5 having children with Cerebral Palsy, ages ranging from 2 to 7 years, with no evidence of mental delay, being followed by a rehabilitation center in Salvador city, and 5 families with similar characteristics but with nondisabled children. The data collection included structured interviews for mothers and fathers in different moments, recorded and fully transcribed, naturalistic observation of the environment, wrote in a field diary and observation of the adult-child interaction, through continuous register. The observation indicated similar characteristics in home environments for both groups with presence of many obstacles and architectonic barriers that makes difficult the dislocations for the child with a Cerebral Palsy. The analysis of the interaction process also indicates other similarities between the groups: 1. Beyond the sintonic relationship in both groups the majority of the children tend to be responsible for the feeding task and the adults for the bathing, suggesting that not only the physical disability, but also other factors, like the status and value of the task, could interfere in the responsibility distribution. 2. The use of order, directive strategy usually reported in literature as typical of the interaction between parents and children with disabilities, was the most used by the parents in this study to make the children perform the given task mainly during bath time; the question is if this parental style could be determined by the socio-cultural context, more than by the child’s characteristic. 3. The play activity was recognized as important for children, although mothers didn’t display much interest in it, except to prevent danger and inadequacies. On the other hand, the mothers of children with Cerebral Palsy are different from the others because they are unsatisfied with their children’s performance mainly in hygiene habits that they judge beneath their expectations in virtue of the physical disability. The same reason seems to justify a decrease in the exterior access for children with Cerebral Palsy. The fathers refereed involvement in child rearing practices but still seem to assume income raising as theirs fundamental function in the family’s dynamics. Thinking about an ideal educational system mothers from both groups tend to value extreme affection in detriment of authority. They also emphasize explanations, care and punishment. The fathers likewise value affection but tend to emphasize the use of authority and demands for the nondisabled children. The obedience is the most valued attribute of the “ideal child”. The majority of the mothers evaluate themselves as being flexible in their relationship with their children. In addition the parents made efforts to elaborate their own experience in the education process trying to avoid repetition of bad educational strategies that made them suffer in the past. The results enabled the discussion of the relation between Cerebral Palsy, socio-cultural context and child rearing practices.

Cette étude s’intéresse aux modes de transport terrestre utilisés pour les biens et marchandises dans l’ancienne Égypte. On en dénombre plusieurs, dont les plus importants sont la palanche, la barre de portage, le traîneau, et le transport à dos d’âne. Cette recherche s’appuie principalement sur des ressources documentaires iconographiques et plastiques, provenant de mastabas et d’hypogées datés de l’Ancien et du Moyen Empire. Elle a pour enjeu de préciser les conditions d’utilisation des différents modes de transport, tant sur un plan chronologique, que sociologique, ou topographique. / This study deals with means of land transport used for goods and merchandises in ancient Egypt. We can count a few, among which the most important are yoke, carrying pole, sledge and donkeys. This research is mainly based on iconographic and sculptural documentary resources from mastabas and hypogea dating from the Old and Middle Kingdom. Its main concern is to explain the conditions of use of the different means of land transport, on a chronological, sociological as well as on a topographical level.

This essay is working on exploring what it is that motivates the man and the boy to survive despite the harsh reality they live in. The purpose of the essay is to show four main factors for motivation: morality, religion, society and paternal love. The first factor is the fundamental inner voice of morality which tells them why they should do something. In order to be able to productively discuss the topic of moral motivation I will introduce W.D. Ross's theory of Pluralistic Deontology as a means to find a framework in which to discuss this aspect of the novel. The second factor discussed is religion, which somewhat functions in the same way as morality does but seems to be more of a driving force, primarily for the man. The third factor is society in the sense of how it motivates one to take certain actions. I will use Thomas Hobbes’s idea of the state of nature, but also make it clear how, specifically, a postapocalyptic scenario affects the protagonists. The fourth factor and also the overarching factor discussed is paternal love. This factor is inter-located throughout the whole essay. Probably the most significant phrase from Cormac McCarthy’s The Road is “carrying the fire” (79). It is a central focal point in the man and the boy's overall interaction. The importance of the phrase cannot be stressed enough and does, without a doubt, carry a significant meaning for them both. However, we never really get an explanation to what the phrase really means, which inevitably invites the readers to draw their own conclusions as to what the phrase conveys. It remains ambiguous throughout the novel but in terms of motivation it has to do with surviving and/or the upholding of values remembered from the pre-apocalyptic society. As I address the phrase this meaning it also becomes possible to see that there are motivating factors for both the man and the boy that affect their morale to keep the fire going. This essay will investigate three possible motivating factors found in the novel, and, in addition to this, an overarching factor that can, arguably, function as connection between the other three factors.

Elektrische Verbindungen in der Elektroenergietechnik sind aus technologischen und konstruktiven Gründen beim Zusammenschalten von Betriebsmitteln in Schaltanlagen und auf den Übertragungswegen bei Kabeln und Freileitungen notwendig. Als elektrischer Kontakt wird die Berührung zweier stromführender Leiter verstanden. Eine Verbindungsart, die häufig bei Stromschienen eingesetzt wird, ist die Schraubenverbindung. Um eine Lebensdauer dieser Verbindung von üblicherweise 50 Jahren und mehr zu gewährleisten, ist es notwendig, die Alterung abhängig von der Zeit und der Temperatur zu kennen. Neben dem Kraftabbau und den chemischen Reaktionen / Fremdschichtbildung bei Verbindungen mit Kupfer- oder Aluminiumleitern ist die Interdiffusion bei Bimetallverbindungen und bei Verbindungen mit beschichteten Kontaktpartnern von Bedeutung. In dieser Arbeit wurde der Kraftabbau bei Schraubenverbindungen mit Stromschienen aus Cu-ETP (Werkstoff-Nr. CW004A) und CuAg0,1P (Werkstoff-Nr. CW016A) im Temperaturbereich zwischen 105 °C und 160 °C untersucht. Es wurde die Kraft und der Widerstand an stromdurchflossenen Verbindungen abhängig von der Zeit bis zu 2,4 Jahren gemessen. Des Weiteren wurde der Einfluss von verschiedenen federnden und nicht federnden Elementen im Verbindungssystem auf den Kraftabbau untersucht. Es wurde eine statische Mindestverbindungskraft bestimmt, der Kraftabbau bis zu einer Lebensdauer von 50 Jahren berechnet und daraus eine Grenztemperatur für diese Verbindungsart bestimmt. Neben dem Kraftabbau wurde die Alterung durch Interdiffusion an Schraubenverbindungen mit verzinnten und versilberten Cu-ETP Stromschienen im Temperaturbereich zwischen 115 °C und 140 °C untersucht. Es wurde an stromdurchflossenen und im Wärmeschrank gelagerten Verbindungen der Verbindungswiderstand abhängig von der Zeit bis zu 2 Jahren gemessen. Die Langzeitversuche wurden durch mikroskopische Untersuchungen ergänzt, in denen die Dicke der sich gebildeten intermetallischen Phasen gemessen und bewertet wurde. Ergänzend zu den Langzeituntersuchungen wurden aktuelle Erkenntnisse zu den chemischen Reaktionen / Fremdschichtbildung auf Kupfer-, Silber- und Zinnoberflächen zusammengestellt und bewertet. / Electrical joints are necessary for technological and design reasons to connect electric equipment and to realize the transmission of electrical energy by cables and overhead lines. The contact between two current-flown electrical conductors is called electrical joint. One joint type often used is the bolted joint. To allow a lifetime of this joint of 50 years and longer it is necessary to know the ageing depend on time and temperature. In addition to ageing by force reduction and the chemical reactions / impurity layers at joints with copper und aluminium conductors, the interdiffusion has a great influence at bi-metal joints and joints with plated conductors. In this work the force reduction was analysed at bolted joints with bus bars made of Cu-ETP (material number CW004A) and CuAg0.1P (material number CW016A) in a temperature range between 105 °C and 160 °C. The joint force and the joint resistance were measured time-depended at current-flown joints up to 2.4 years. Furthermore the influence on the force reduction by different resilient und non-resilient elements in the joint system was tested. There was a minimum static joint force appointed and the force reduction calculated to a lifetime of 50 years. Out of these results a category temperature for these joints was defined. Additionally the ageing due to interdiffusion at bolted joints with tin and silver plated Cu-ETP bus bars was analysed at the temperatures 115 °C and 140 °C. At joints aged by current-flown and in the heating cabinet the joint resistance was measured time-dependent up to 2 years. These long-term tests were supplemented by microscopic examinations. The thickness of the grown intermetallic compounds was measured and stated. Additional to the long-term tests the topical knowledge to chemical reactions / impurity layers at copper, silver and tin surfaces was composed and stated.

In this thesis we propose an abstraction based certification technique for Java programs which is based on rewriting logic, a very general logical and semantic framework efficiently implemented in the functional programming language Maude. We focus on safety properties, i.e. properties of a system that are defined in terms of certain events not happening, which we characterize as unreachability problems in rewriting logic. The safety policy is expressed in the style of JML, a standard property specification language for Java modules. In order to provide a decision procedure, we enforce finite-state models of programs by using abstract interpretation. Starting from a specification of the Java semantics written in Maude, we develop an abstraction based, finite-state operational semantics also written in Maude which is appropriate for program verification. As a by-product of the verification based on abstraction, a dependable safety certificate is delivered which consists of a set of rewriting proofs that can be easily checked by the code consumer by using a standard rewriting logic engine. The abstraction based proof-carrying code technique, called JavaPCC, has been implemented and successfully tested on several examples, which demonstrate the feasibility of our approach. We analyse local properties of Java methods: i.e. properties of methods regarding their parameters and results. We also study global confidentiality properties of complete Java classes, by initially considering non--interference and, then, erasure with and without non--interference. Non--interference is a semantic program property that assigns confidentiality levels to data objects and prevents illicit information flows from occurring from high to low security levels. In this thesis, we present a novel security model for global non--interference which approximates non--interference as a safety property. / Alba Castro, MF. (2011). Abstract Certification of Java Programs in Rewriting Logic [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/13617 / Palancia

The subject of this master's thesis is a static and structural design of a Load-carrying steel structure of railway bridge with bottom steel deck of the span of 42 + 60 + 42 m over the Labe river in Děčín. A solid steel beam forms the main load-bearing structure of the bridge reinforced with truss-work. The truss-work is made up of an open top chord and diagonal strut without secondary vertical struts. The calculations were done in compliance with valid ČSN EN documents.

The Master Thesis describes knowlege in thrust bearings with solid segments. Contains analysis of thrust bearing used in NR/20SJ turbochargers. Further designs new thrust bearing with enhancement of load carrying capacity. The new thrust bearing and the old one are tested and compared.

A soil damage due to logging is soil compression or track formation due to forest machines driving through woodland. After harvesting areas on Stora Enso’s woodland, serious soil damages have been noticed during thinning and final harvesting follow-ups. The purpose of the study was to clarify whether there is a connection between planned and not planned crossings in the compartment instructions and the occurrence of both soil damage and serious soil damage. To investigate this, 30 areas were selected from this year´s 207 final harvest areas and divided into three categories, which were compared for differences in occurrence of logging damages depending on type of crossing. The result showed that the category that had no planned crossings had a predominantly high proportion of soil damage and serious soil damage in the study. The category that had planned crossings had a low percentage of soil damage and no serious soil damage.

No description available.