O ambiente interagências nas operações de pacificação do Complexo da Maré

O objetivo do presente estudo foi realizar uma análise da interação do Exército Brasileiro perante os 42 (quarenta e dois) órgãos civis e militares no conjunto de favelas da Maré e de que forma estas influenciaram na doutrina das operações militares de pacificação. A Operação São Francisco - iniciada em 5 de abril de 2014 pela Força de Pacificação (F Pac), foi designada aos componentes do Ministério da Defesa para assegurar e promover a garantia da lei e da ordem (GLO) pública nas comunidades do Complexo da Maré, na cidade do Rio de Janeiro. A metodologia proposta baseou-se em uma pesquisa aplicada com técnica de abordagem mista, através da pesquisa bibliográfica, da análise dos documentos e relatórios da F Pac e da realização de entrevistas aos integrantes das forças militares e dos civis que prestaram serviços públicos na região supracitada. Para isso, foi utilizado o método indutivo por meio dos testes estatísticos, que visaram identificar relacionamentos causais entre as demandas de serviços públicos civis atendidos nas comunidades, bem como a influência destas nas operações de pacificação e nas políticas de defesa voltadas à atualização da doutrina e das operações militares. As contribuições teóricas esperadas foram a observação das mudanças no emprego operacional em um ambiente com alta criminalidade e baixo Índice de Desenvolvimento Humano (IDH) e fornecer informações para o emprego colaborativo das instituições civis sob a proteção militar (mas não sob o controle militar). Isto visou proporcionar à população o acesso aos serviços públicos básicos com segurança e minimizou o desgaste das ações de GLO através da conquista da opinião pública local. As contribuições práticas esperadas residiram no aumento do potencial militar, através da integração de políticas públicas efetivas das pastas civis. As implicações referiram-se a abordagem e a maior interação entre as pastas governamentais militares e civis através da mediação da Seção de Assuntos Civis. As pesquisas deste trabalho evidenciaram por serem restritas ao contexto da pacificação de um conjunto de favelas da capital do Estado do Rio de Janeiro no ano de 2014.

UMA JUVENTUDE ORGANIZADA E NÃO-PARTICIPATIVA: UM ESTUDO DE CASO SOBRE UMA GESTÃO JOVEM EM SÃO BERNARDO DO CAMPO

Esta pesquisa estuda a existência e atuação de uma organização da sociedade civil em São Bernardo do Campo (SBC). A partir da utilização de ferramentas da participação cidadã, em especial a que constitui o Orçamento Participativo, ela analisa se e como esta organização se relaciona com os munícipes e com as esferas do poder executivo na busca por uma proposta de governo que atenda aos anseios daqueles a que representa, além das próprias aspirações. O estudo busca, através de um relato histórico, contextualizar o município pelos aspectos econômicos, políticos e sociais. A partir de levantamentos bibliográficos e acompanhamento, por meio de entrevistas, realizou-se um estudo de caso em uma entidade social não governamental que tem especial olhar sobre o jovem cidadão são-bernardense, a fim de verificar como esta entidade é planejada e gerida para atender às aspirações sociais destes. Espera-se, ao final, entender como uma organização da sociedade civil, em consonância com o que pretende para si mesma, reflete seus objetivos nas propostas e plenárias de Orçamento Participativo de SBC, realizadas em 2010 para o ano 2011.(AU)

A DUPLA FACE DE SALOMÃO MEMÓRIAS DE UMA ESCOLA DE ESCRIBAS NO SÉCULO X A.C.

O memóravel rei Salomão passou para a história como um sábio por excelência. Ainda na atualidade, a maioria das pessoas relaciona o seu nome com a sabedoria. Mas a partir do momento que passamos a ter conhecimento dos textos que se referem a Salomão, de como foram construídos e quais as ideologias ali presentes (tanto as favoráveis quanto as contrárias), surgem muitos questionamentos, em especial, quando se busca metodicamente dissociar a história da memória. Ao que parece a historiografia tradicional sobre Salomão, ainda encontra-se muito dependente da figura idealizada de Salomão. Resultado de uma construção feita desde a sua época, pelas mãos de seus escribas, como também em tempos posteriores, de acordo com os interesses de cada época. Concluí-se que a sabedoria de Salomão nada mais é do que uma construção ideológica. A partir dessa perspectiva, surge o desafio de buscar outra memória de Salomão, a fim de propor um caminho alternativo, que nos permita produzir uma nova historiografia a respeito de Salomão. Uma historiografia que não se firma na memória oficial , mas que siga na direção contrária, a partir das memórias dos que não se deixaram influenciar pela ideologia do poder. Dessa forma, poderemos alcançar a comprovação de nossa tese: a existência de duas memórias conflitantes a respeito de Salomão, dentro da Escola de Escribas da corte de Jerusalém no século X a.C. Infelizmente, as fontes disponíveis sobre esse assunto são realmente escassas, o que temos são textos, isto é, memórias sobre Salomão. Escolheu-se um texto crítico a Salomão. Trata-se de 1Rs 1-2, texto que pertence a chamada História da Sucessão de Davi, acreditando-se que a partir dele, consiga-se produzir uma historiografia diferente da historiografia tradicional. Concluímos que dentro da Escola de Escribas Salomônica existiam duas ideologias conflitantes. Os que eram a favor de Salomão, defendiam os interesses urbanos. Aqueles que pertenciam à escola anti-Salomônica e anti-Jerusalém, representavam os interesses dos camponeses explorados e oprimidos pelo poder.

TV BRASIL: UMA EMISSORA PÚBLICA EM CONSTRUÇÃO Ações e controvérsias 2007-2010 Universidade Metodista

A pesquisa verifica em que medida a TV Brasil, criada no país em 2007 pelo presidente Luiz Inácio Lula da Silva, se constitui, de fato, em um modelo democrático de TV pública, com o objetivo de desenvolver a consciência crítica do cidadão, mediante programação educativa, artística, cultural, informativa, cientifica e promotora da cidadania , como determina seu Estatuto. O trabalho descreve e analisa o processo de construção da emissora no período de 2007-2010. Examina as relações de poder e o debate entre os diferentes setores do governo e da sociedade civil organizada, envolvidos no processo de democratização da radiodifusão brasileira, e na criação e implementação do modelo de televisão pública no Brasil. Discute os processos de gestão, de produção e de financiamento da emissora, incluindo o sistema de pitching1 adotado. Define como é constituído o perfil da emissora, com base na descrição da grade semanal de programação, distribuída em horários e gêneros, através de um mapeamento geral dos programas, e uma breve análise comparativa da grade entre três emissoras: TV Globo, TV Cultura e TV Brasil 2009-2010. Trata-se de uma pesquisa exploratória. A metodologia central é a de Estudo de Caso (YIN, 2005), de natureza qualitativa. Examina as mudanças e tendências apresentadas no decorrer do período estudado. Apesar de existirem dificuldades de gestão e de ordem técnica relacionadas à transmissão, abrangência e qualidade do sinal, bem como a da ausência de verbas para a divulgação e constituição de sua programação, a TV Brasil oferece um novo paradigma para o campo público de rádio e televisão. Confirma, assim, sua viabilidade como um modelo alternativo e democrático de gestão e de funcionamento da televisão pública no país, ao se transformar num agente de fomento para a integração da sociedade brasileira. Vale ressaltar, no entanto, que a emissora encontra-se, ainda, em busca de novos caminhos e deverá aperfeiçoar-se ao longo do processo de sua consolidação, seja no âmbito de sua gestão ou de sua programação.

RESILIÊNCIA DE ATLETAS DE BASQUETEBOL

Resiliência remete à habilidade do ser humano de demonstrar êxito diante das adversidades da vida, superá-las e, inclusive, ser fortalecido ou transformado por elas. O construto tem sido estudado há cerca de quarenta anos na Psiquiatria com foco em crianças, mas sua investigação é bem mais recente com a população adulta. No mundo da competição esportiva, os estudos são escassos. O contexto esportivo apresenta altos desafios e adversidades constantes que os atletas precisam vencer para cumprir as metas profissionais; por isso, convivem, muito frequentemente, com seus limites físicos e psicológicos. Assim, a resiliência pode ser um importante aspecto em suas vidas profissionais. Este estudo objetiva descrever os níveis de resiliência dos atletas no Basquetebol e identificar possíveis relações entre resiliência e alguns indicadores de eficiência estatística. Participaram da pesquisa, voluntariamente, 71 atletas profissionais adultos e atuantes da modalidade. As variáveis foram avaliadas por meio da Escala de Avaliação de Resiliência EAR, de um questionário de dados sociodemográficos e de índices de eficiência registrados pela Federação Paulista de Basquetebol. Os resultados de análises estatísticas descritivas e de correlações bivariadas de Pearson permitiram observar que os atletas demonstraram um alto nível de resiliência com destaque para a persistência diante das dificuldades e a aceitação positiva de mudanças. Os fatores que compõem a resiliência não apresentaram correlação significativa no tocante ao coeficiente de eficiência dos atletas. Ao comparar as médias por meio da análise de variância percebeu-se que os atletas que possuíam entre cinco e dez anos de profissão apresentaram melhores médias de coeficiente de eficiência. Os resultados revelam, ainda, que os atletas que atuam menos de 8 minutos na partida, em média, produzem menores índices de eficiência estatística e que os atletas que pertencem às equipes de resultados medianos na tabela de classificação tendem a apresentar maior percepção de competência pessoal que os atletas que atuam nas equipes mais mal colocadas. Os fatores de resiliência não se diferenciam em função da experiência dos atletas, nem do tempo em média que permanecem em quadra. Esses resultados revelam a necessidade de questionar se os indicadores de eficiência estatística seriam os critérios mais adequados para verificar o papel da resiliência na vida de atletas de Basquetebol e apontam para a necessidade de aumentar o número de estudos sobre a influência de características individuais no mundo dos esportes profissionais.

The Romanian Orthodox Church

At first glance, the nationalist ideology of the French Revolution seems to have had little impact on the Orthodox Church in Romanian-speaking territories. Romanians were the predominant inhabitants of the principalities of Wallachia and Moldavia and the neighboring territories of Transylvania (including Crişana, Maramureş and Banat), Bukovina, Bessarabia, and Dobrudja. The majority of ethnic Romanians belonged to the Orthodox faith while their communities were at the intersection of geopo liti cal interests of the Rus sian, Ottoman, and Habsburg empires. In 1859 the Principalities of Wallachia and Moldavia (known as the Old Kingdom between 1866 and 1918) united into a single state under the rule of a local prince. The term "Romania" began to be used by the new state in its of cial documents in 1862. Two years later, the state supported the declaration of a Romanian autocephalous (in de pen dent) church that was recognized by the Ecumenical Patriarchate in 1885. As an integrative part of the Orthodox commonwealth, the church was situated between the competing jurisdictions of the Ecumenical Patriarchate and the Rus sian Orthodox Church, while its declaration of autocephaly followed a pattern in the spread of national churches in Southeastern Europe. From the Treaty of Kuchuk Kainardji of 1774 to the beginning of the Greek War for In de pen dence in 1821, the Romanian principalities were under the suzerainty of the Ottoman Empire, which had full control of their po liti cal and economic affairs. The sultan appointed princes, and the Porte determined their po liti cal and judicial status. The princes were drawn from the "Phanariots," and were directly appointed by the Porte from preponderantly Greek elite rather than the Romanian local elite, the boyars (boieri).1 In each principality, the church was headed by a metropolitan who was under the direct jurisdiction of the Ecumenical Patriarchate. That religion mattered to local population as a means of social cohesion was suggestively depicted by Anatole de Demidoff, an En glish traveler in the region in 1837. Arriving in Bucharest, the capital of Wallachia, he claimed that: I know of no city in Europe in which it is possible to find more agreeable society, or in which there is a better tone, united with the most charming gaiety⋯. Religion, which is here of the schismatic Greek creed, does not, properly speaking, hold any great empire over the minds of the Wallachian people, but they observe its outward forms, and particularly the austerities of fasting, with scrupulous exactitude. The people are seen to attend divine ser vice with every sign of respect, and the great number of churches existing in Wallachia, bear witness to the ardent zeal with which outward worship is honored.2 The Romanian Orthodox Church was a national institution, closely linked to social, economic, and po liti cal structures. In most cases, Orthodox hierarchs were appointed from the families of boyars, thus ensuring a close relationship with the state authorities and its policies. As one of the largest landowners in the principalities, the church had a prime role in administrating healthcare and education. Although the majority of the clergy was uneducated, it dispensed both ecclesiastical and civil justice and in many cases worked closely with boyars in local administration.3 The lower clergy not only contributed directly to the economy but also benefited from tax privileges. Some small villages had an unusually high proportion of clergy in comparison to the overall population. For example, in 1810, Stənisləveşti, a village in the south of Wallachia, was composed of eleven houses and had two priests, five deacons, and three cantors; similarly, the Frəsinet village of nineteen houses had two priests and five deacons.4 Although these cases were exceptional, they indicate both the economic value of being a member of the clergy and the wider canonical dimension of church jurisdiction. The special status of the clergy was reflected not only at lower but also at higher levels. Bishops and metropolitans engaged with state policy and in many cases opposition to the authorities led to the loss of a spiritual seat. The metropolitan of each principality worked with the prince and was president of the divan, the gathering of all boyars. He held the right to be the first person to comment on state policy and to make recommendations when the prince was absent. The metropolitan replaced the prince when the principality had no political ruler, such as in the cases of Metropolitan Veniamin Costachi of Moldavia in 1806 and Metropolitan Dositei Filitti of Wallachia, while the bishops of Buzəu and Argeş were members of the provisional government during the Rus sian occupation of the principalities in 1808. The higher clergy had both religious and political prerogatives in relation to foreign powers as evident in their heading of the boyars' delegation to peace negotiation between the Rus sian and Ottoman empires at Focşani in 1772 and addressing memoranda to the Austrian and Rus sian governments in 1802.5 The primary role of the church in the principalities of Moldavia and Wallachia was paralleled by the national mobilization of Orthodox communities in the neighboring territories that had Romanian inhabitants. Although throughout the region Orthodox communities were incorporated into church structures as part of the Habsburg, Austrian or Rus sian empires, the nineteenth century was characterized by the leadership's search for political autonomy and the building of a Romanian national identity. The Orthodox communities outside the Old Kingdom maintained relations with the faithful in principalities across the Carpathian Mountains and the Dniester River and sought support in their struggle for political and religious rights.

A marketing, a termelés és a logisztika hozzájárulása a vállalati eredményességhez (The Contribution of Marketing, Production and Logistics to Business Performance)

A Budapesti Corvinus Egyetem Versenyképességkutató Központjának 2004-ben lekérdezett kérdőíve alapján, ami 154 feldolgozóipari vállalat adatait tartalmazza, azt vizsgáljuk, hogy az ellátási lánc három lényeges vállalati funkciója, a marketing, a termelés és a logisztika milyen mértékben járul hozzá az üzleti eredményességhez. Az eredmények szerint a marketingnek és a termelésnek erősebb hatása van a vállalati teljesítményre, mint a logisztikának. A három funkció együttesen csekély, bár statisztikai értelemben szignifikáns szerepet játszik az üzleti sikerben. _____ Companies are complex organizations where a lot of activities and processes have to work properly in order to reach success. Depending on several factors, sometimes some activities get more emphasis while others work in the background. Since organizational functions have separate literature and practical knowledge, and transit between them is rare, we do have very little knowledge on how the various functions together contribute to company success. Based on a wide-scale empirical study on Hungarian competitiveness, which includes data on 154 companies from the process industry, we examine to what extent three functions of the supply chain, marketing, manufacturing and logistics, can contribute to business success. Results show that marketing and manufacturing have larger effect on company performance than logistics. However, the three functions together play a minor, although significant role in company success.

The effects of defendant account on damage award decisions

The purpose of this study was to examine whether the manner in which civil defendants account for their behavior influences compensatory and punitive damage awards. Jurors read three civil trial summaries, in which I manipulated injury severity (high vs. low), defendant reprehensibility (high vs. low), defendant status (individual vs. corporate), and account (concession, excuse, justification or refusal) in a factorial design. I also included four control groups in which the defendant stipulated liability. In all other conditions, participants read that a jury had found the defendant negligent. Only defendant reprehensibility influenced punitive awards. Both plaintiff injury and defendant reprehensibility influenced compensatory awards. When individuals offered justifications and when corporations offered excuses, jurors awarded lower compensatory awards against low reprehensibility defendants than against high reprehensibility defendants. Negligence stipulations led to lower damage awards for individuals than for corporations. Additionally, concessions tended to produce lower awards when combined with a stipulation of negligence as opposed to a jury decision. These findings support the hypothesis that in cases in which the defendant is clearly negligent, circumstances exist in which stipulating negligence and offering an apologetic account will lead to reduced damage awards decisions. Results indicate that individual and corporate defendants offering justifications and refusals should first consider the reprehensibility of their actions. In a broader realm, findings demonstrate that the manner in which a jury perceives the explanation given by the defendant is dependent upon defendant characteristics and case-specific factors. ^

Evaluation of contact and non-contact trapping efficiencies of human scent chemical profiles and their stabilities under different environmental conditions

Establishing an association between the scent a perpetrator left at a crime scene to the odor of the suspect of that crime is the basis for the use of human scent identification evidence in a court of law. Law enforcement agencies gather evidence through the collection of scent from the objects that a perpetrator may have handled during the execution of the criminal act. The collected scent evidence is consequently presented to the canines for identification line-up procedures with the apprehended suspects. Presently, canine scent identification is admitted as expert witness testimony, however, the accurate behavior of the dogs and the scent collection methods used are often challenged by the court system. The primary focus of this research project entailed an evaluation of contact and non-contact scent collection techniques with an emphasis on the optimization of collection materials of different fiber chemistries to evaluate the chemical odor profiles obtained using varying environment conditions to provide a better scientific understanding of human scent as a discriminative tool in the identification of suspects. The collection of hand odor from female and male subjects through both contact and non-contact sampling approaches yielded new insights into the types of VOCs collected when different materials are utilized, which had never been instrumentally performed. Furthermore, the collected scent mass was shown to be obtained in the highest amounts for both gender hand odor samples on cotton sorbent materials. Compared to non-contact sampling, the contact sampling methods yielded a higher number of volatiles, an enhancement of up to 3 times, as well as a higher scent mass than non-contact methods by more than an order of magnitude. The evaluation of the STU-100 as a non-contact methodology highlighted strong instrumental drawbacks that need to be targeted for enhanced scientific validation of current field practices. These results demonstrated that an individual's human scent components vary considerably depending on the method used to collect scent from the same body region. This study demonstrated the importance of collection medium selection as well as the collection method employed in providing a reproducible human scent sample that can be used to differentiate individuals.

Commuter Airlines:Their Changing Role

In - Commuter Airlines: Their Changing Role – an essay by J. A. F. Nicholls, Transportation Coordinator, Department of Marketing and Environment, College of Business Administration, Florida International University, Nicholls initially observes: “The great majority of airline passenger miles flown in the United States are between large conurbations. People living in metropolitan areas may be quite unaware of commuter airlines and their role in our transportation system. These airlines are, however, communications lifelines for dwellers in small - and not so small - towns and rural areas. More germanely, commuter airlines have also developed a pivotal role vis-a-vis the major carriers in this country. The author discusses the antecedents of the commuter Airlines, their current role, and future prospects.” Huh; conurbations? Definition: [n.] a large urban area created when neighboring towns spread into and merge with each other In providing a brief history on the subject of commuter airlines, Nicholls states: “…there had been a sort of commuter airline as far back as 1926 when, for example, the Florida Airways Corporation provided flights between Jacksonville and Atlanta, Colonial Air Lines between New York and Boston, and Ford Air Transport from Detroit to Cleveland.” “The passage of the Civil Aeronautics Act in 1938 was pivotal in encouraging and developing a passenger orientation by the airlines…” Nicholls informs you. Nicholls provides for the importance of this act by saying: “The CAA was empowered to act “in the public interest and in accordance with the public convenience and necessity.” Only the CAA itself could determine what constituted the “public convenience and necessity.” Nobody, however, could provide air transportation for public purposes without a Certificate of Public Convenience and Necessity, dispensed by the CAA.” The author wants you to know that this all happens in the age of airline regulation; that is to say, pre de-regulation i.e. 1978. Airlines could not and did not act on their own behalf; their actions were governed by the regulating agency, that being the Civil Aeronautics Board [CAB], who administered the conditions set forth by the CAA. “In 1944 the CAB introduced a new category of service called feeder airlines to provide local service-short-haul, low density-for smaller communities. These carriers soon became known as air taxis since they operated as common carriers, without a regular schedule,” says Nicholls in describing the evolution of the service. In 1969 the CAB officially designated these small air carriers as commuter airlines. They were, and are subject to passenger limits and freight/weight restrictions. Nicholls continues by defining how air carriers are labeled and categorized post 1978; in the age of de-regulation.

South American Defense Council: What it Means for Regional Security?

The South American Defense Council (CSD), created in March 2009 as a military coordinating body of the Union of South American Nations (UNASUR) demonstrates a growing trend among Latin American countries to approach matters of regional security independent of the United States. The CSD also indicates a maturation of democratic civil military relations in a region once dominated by authoritarian military regimes. The CSD aims to facilitate the exchange of information about regional defense policies, promote collaboration for disaster relief, and promote civil-military engagement. In less than a year it is hardly a tested entity, but the presence of 12 South American states coming together around security policy marks an important moment in the evolution of civil-military relations in the region. Brazil has taken on an important leadership role in the CSD, acting as a leader in recent regional peacekeeping efforts. As a geopolitical move, Brazil also sees a benefit in promoting good relationships with all countries of South america, given its common border with nine of them. Although the United States is not a member of the CSD, the organization's agenda of infromation exchange of defense policies, military cooperation, and capacity building, including disaster assistance and preparedness provide opportunities for greater collaboration. The CSD is not part of the Inter-American System created after the Second World War. It is unclear how its work will coincide with the OAS Committee on Hemispheric Security or its Secretariat for Multidimensional Security. The U.S. should view the CSD as a mechanism to promote joint initiatives that encourage democratic governance in the region.

A graduate piano recital

PROGRAM The Well-Tempered Clavier, Book I..............Johann Sebastian Bach (1685-1750) Prelude and Fugue XXI in B flat major Prelude and Fugue XXII in b flat minor Sonata N. 11 in A major, K.331.......Wolfgang Amadeus Mozart (1756 - 1791) Theme and Variations Menuetto Allegretto Intermission Images Series II................................Claude-Achille Debussy (1862-1918) Poission d' or (Goldfish) Rhapsodies Op. 79 .................................Johannes Brahms (1833-1897) No. 1 in b minor No. 2 in g minor Etude in A flat Major, Op. 1, No. 2.....................Paul de Schlozer (1841-1898)

A representação discursiva da vítima e do réu no gênero sentença judicial

This dissertation aims to identify and describe the phenomenon of discursive representation of victim and defendant in court judgment genre. Researchis part of general theoretical framework of text linguistics and more specifically in textual discourse analysis (ATD) theory developed by Jean-Michel Adam ([2008] 2011). Discursive representation notion proposed by ATD is one of the most important aspects of semantic dimension of the text, being complemented in the work of Grize (1990, 1996) from schematization notion. In this perspective, this work is guided by studies of text linguistics with Koch (2012, 2005, 2004), Marcuschi (2012, 2008, 2005), Rodrigues, Passeggi and Silva Neto (2010, 2012, 2014), with genre Bazerman (2005), Bakhtin (1992) and the juridical discourse with Capez (2012), Pimenta (2007), Lourenço (2013) and Gomes (2013) . Methodologically, is a documentary research, presenting qualitative and descriptive characters and is guided by the inductivedeductive method. Corpus consists of a judicial sentence, criminal, collected electronically from Court of Justice of São Paulo - Judiciary website in consultation Judged1st Degree, with the theme of violence against women. Analysis procedures use semantic categories of discursive representation, such as referencing, predication, modification and the spatial and temporal location. Results are focused on the construction of discursive representation of (victim and defendant) from PdV distinct enunciators, which may approach or distance themselves according to argumentative text orientation. Thus, considering social importance of forensic text and, in particular, court judgment in the lives of citizens, it was possible to realize the importance of developing research that addresses the study of text semantic dimension, especially in construction of representations of discourse objects

Estudo da densidade de corrente crítica para reversão da magnetização de nanoelementos ferromagnéticos

The discovery that a spin-polarized current is capable of exerting a torque in a ferromagnetic material, through spin transfer, might provide the development of new technological devices that store information via the direction of magnetization. The reduction of current density to revert the magnetization is a primary issue to potential applications on non volatile random access memories (MRAM). We report a theorical study of the dipolar and shape effects on the critical current density for reversal of magnetization, via spin transfer torque (STT), on ferromagnetic nanoelements. The nanostructured system consists on a reference layer, in which the current will be spin-polarized, and a free layer of magnetization reversal. We observed considerable changes on the critical current density as a function of the element’s reversion layer thickness (t = 1.0 nm, 1.5 nm, 2.0 nm e 2.5 nm) and geometry (circular and elliptical), the material kind of the system free layer (Iron and Permalloy) and according to the orientation of the magnetization and the spin polarization with the major axis. We show that the critical current density may be reduced about 50% by reducing the Fe free layer thickness and around 75% when we change the saturation magnetization of circular nanoelements with 2.5 nm of thickness. We still observed a reduction as much as 90% on the current density of reversion for thin nanoelements magnetized along the minor axis direction, using in-plane spin polarization parallel to the magnetization.

Análise de sedimentos associados à atividade de perfuração na plataforma continental externa, Bacia Potiguar - Brasil

This study was developed in an area located on the outer shelf in the Potiguar Basin, Brazilian equatorial margin; this tropical shelf represents a modern, highly dynamic mixed carbonate-siliciclastic system. Field sampling was carried out during 3 cruises surrounding a shallow-water exploratory well to compare sediment properties of the seafloor, including grainsize, texture, mineral composition, carbonate content, and organic matter. Cruise 1 (C1) was carried prior to drilling, while Cruise 2(C2) and 3 (C3) respectivelly 3 and 12 months after drilling. The sample grid used had 16 stations located along 4 radials from 50 m the well up to a distance of 500 m. Sediments were analyzed in the first 0-2 cm, and 0-10 cm layers. The results show that sedimentary cover around the well is poor to very poorly sorted, with the particle size predominantly in the medium to coarse sand fraction, followed by gravel and mud. The content of calcium carbonate is greater than 96%, associated to bioclastic sediments, and the content of organic matter is less than 12%. Only minor sedimentological variations occured in the area affected by drilling operations. Mainly observed during the second cruise, in terms of a change in grain size distribution associated to an increase in siliciclastic content, This impact occurred in the most surficial sediment (0-2 cm), in the radial closest to the well (50 m), and could suggest the effects of drilling. However, in the third cruise, one year after drilling, the sediments return to show the same characteristics as in the first cruise. These results show no significant sedimentological variations due to drilling activity, and indicate that ocean dynamics in this area was high enough to recover the environment original characteristics.