Magister Legum - LLM

Context. Accretion outbursts are key elements in star formation. ASASSN-13db is a M5-type star with a protoplanetary disk, the lowest-mass star known to experience accretion outbursts. Since its discovery in 2013, it has experienced two outbursts, the second of which started in November 2014 and lasted until February 2017. Aims. We explore the photometric and spectroscopic behavior of ASASSN-13db during the 2014-2017 outburst. Methods. We use high- and low-resolution spectroscopy and time-resolved photometry from the ASAS-SN survey, the LCOGT and the Beacon Observatory to study the light curve of ASASSN-13db and the dynamical and physical properties of the accretion flow. Results. The 2014-2017 outburst lasted for nearly 800 days. A 4.15 d period in the light curve likely corresponds to rotational modulation of a star with hot spot(s). The spectra show multiple emission lines with variable inverse P-Cygni profiles and a highly variable blue-shifted absorption below the continuum. Line ratios from metallic emission lines (Fe I/Fe II, Ti I/Ti II) suggest temperatures of similar to 5800-6000 K in the accretion flow. Conclusions. Photometrically and spectroscopically, the 2014-2017 event displays an intermediate behavior between EXors and FUors. The accretion rate (<(M)over dot> = 1-3 x 10(-7) M-circle dot/yr), about two orders of magnitude higher than the accretion rate in quiescence, is not significantly different from the accretion rate observed in 2013. The absorption features in the spectra suggest that the system is viewed at a high angle and drives a powerful, non-axisymmetric wind, maybe related to magnetic reconnection. The properties of ASASSN-13db suggest that temperatures lower than those for solar-type stars are needed for modeling accretion in very-low-mass systems. Finally, the rotational modulation during the outburst reveals that accretion-related structures settle after the beginning of the outburst and can be relatively stable and long-lived. Our work also demonstrates the power of time-resolved photometry and spectroscopy to explore the properties of variable and outbursting stars.

Submitted by Biblioteca Central (biblioteca@unicap.br) on 2018-02-22T18:58:23Z No. of bitstreams: 1 nara_fonseca_santa_cruz_oliveira.pdf: 759775 bytes, checksum: e4be24ff2de1542aa85720e34494f350 (MD5) / Made available in DSpace on 2018-02-22T18:58:23Z (GMT). No. of bitstreams: 1 nara_fonseca_santa_cruz_oliveira.pdf: 759775 bytes, checksum: e4be24ff2de1542aa85720e34494f350 (MD5) Previous issue date: 2017-12-06 / With the development of new technologies, we are currently experiencing a revolution in the information society. The Internet has provided greater global integration and has completely altered the recall process, given that the facts posted on the web tend to be timeless and it is not subject to the common biological process of forgetting. In this context, some conflicts were brought to the Judiciary, involving, on the one hand, the supposed "right to forget" (linked to the rights of the personality) and, on the other, the right to freedom of expression and communication. In this work, two cases involving the so-called "right to oblivion" ("Chacina da Candelária" and "Aída Curi") will be studied, both judged on the same day, by STJ, under the report of Minister Luis Felipe Salomão. The factual context of the cases in question was analyzed separately, but the grounds of the decisions were dealt with together, since the High Court used the same arguments to make both decisions, although the solutions pointed out were different: in the case "Chacina da Candelária" (REsp. No. 1,334,097 / RJ), the STJ first applied the right to forgetfulness, since the "Aída Curi" Case (REsp. No. 1,335,153 / RJ) was considered an unforgettable one. In this work, we will analyze the position adopted by the Supreme Court in these cases, discussing whether the way the right to forgetfulness was conceived represents a threat to the right to freedom of expression and communication and the right to collective memory. In order to elucidate the problem, the general aspects involving personality rights, the right to freedom of expression and the collision of fundamental rights will be observed. The institute of collective memory will also be studied. / Com o desenvolvimento das novas tecnologias, experimentamos, atualmente, uma revolução na sociedade de informação. A Internet proporcionou uma maior integração global e alterou completamente o processo de lembrança, tendo em vista que os fatos divulgados na rede tendem a ser eternos e ela não se sujeita ao processo biológico comum de esquecimento. Nesse contexto, alguns conflitos foram levados ao Poder Judiciário, envolvendo, de um lado, o suposto “direito ao esquecimento” (ligado aos direitos da personalidade) e, do outro, o direito à liberdade de expressão e comunicação. Neste trabalho, será feito o estudo de dois casos envolvendo o chamado “direito ao esquecimento” (“Chacina da Candelária” e “Aída Curi”), ambos julgados no mesmo dia, pelo STJ, sob a relatoria do Ministro Luís Felipe Salomão. O contexto fático dos casos em questão foi analisado em separado, mas os fundamentos das decisões foram tratados em conjunto, tendo em vista que o Superior Tribunal utilizou os mesmos argumentos para proferir ambas as decisões, muito embora as soluções apontadas tenham sido diferentes: no caso “Chacina da Candelária” (REsp. nº. 1.334.097/RJ), o STJ aplicou pela primeira vez o direito ao esquecimento, já o Caso “Aída Curi” (REsp. nº 1.335.153/RJ) foi considerado inesquecível. Neste trabalho, será analisado o posicionamento adotado pelo STJ nos referidos casos, discutindo-se se a forma como o direito ao esquecimento foi concebido representa uma ameaça ao direito à liberdade de expressão e comunicação e ao direito à memória coletiva. Para elucidar o problema, serão observados os aspectos gerais que envolvem os direitos da personalidade, o direito à liberdade de expressão e a colisão entre direitos fundamentais. Será estudado também o instituto da memória coletiva.

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The planet’s biodiversity is in a worrying state. Palm oil production significantly contributes to biodiversity loss in Southeast Asia, especially in Indonesia. Unfortunately, the different forms of public and private regulation in place have had limited success in regulating the sector and protecting the environment. Three of the biggest palm oil traders – Cargill, Musim Mas, and Wilmar International – were chosen as subjects of an embedded case study to answer whether their Corporate Social Responsibility (CSR) efforts have the potential to drive transformation in the palm oil sector towards more environmental sustainability.  This thesis contributes to the debate around the role of business actors in Global Governance and their ability to tackle social and environmental problems caused by their business models with CSR. The thesis engages deductively with capitalism-critical theories on CSR. Carol Bacchi’s “What’s the Problem Represented to be?” (WPR) approach will guide a discourse analysis of the 2019 sustainability reports of the three companies regarding their efforts to improve sustainability in the palm oil sector. A comparison with research articles and NGO reports reaches the conclusion that the measures taken by Cargill, Musim Mas, and Wilmar are not enough to improve sustainability sufficiently.

Im Projekt „Weiterentwicklung und Optimierung von Be- und Entladesystemen für Tank- und Erdbeckenspeicher“ des Forschungsprogramms „Solarthermie 2000plus“ wurden von 2004 bis 2008 unterschiedliche Konstruktionen zur Be- und Entladung thermischer Speicher experimentell und mit Hilfe von Simulationsrechnungen untersucht. Wesentliche Ziele dieses Projektes waren: - die Systematisierung und Analyse bestehender Konstruktionen, - die Weiterentwicklung und Optimierung von Be- und Entladesystemen, - die Ableitung von Richtlinien für Planung und Auslegung, - die Untersuchung der Übertragbarkeit vom Experiment auf Mittel- und Großspeicher sowie - die Einbindung von Industriepartnern (Kooperation und Praxistests). Das Projekt wurde an der Technischen Universität Chemnitz in Zusammenarbeit mit dem Projektpartner Technische Universität Ilmenau durchgeführt. Die Ergebnisse der Untersuchungen und die gewonnenen Erkenntnisse werden im Bericht detailliert erläutert.

Sandwichkonstruktionen mit Deckschichten aus dünnen Metallblechen und Stahlbeton stellen seit Jahrzehnten bewährte und wirtschaftliche Verbundkonstruktionen für Gebäudehüllen dar. Der Einsatz von dünnen Deckschichten aus textilbewehrtem Beton verbindet deren Vorteile und ermöglicht auch bei steigenden Anforderungen an den Wärmeschutz geringe Konstruktionsdicken. Der Beitrag berichtet über die Entwicklung von Ingenieurmodellen zur wirklichkeitsnahen Beschreibung des Tragverhaltens von Sandwichquerschnitten aus textilbewehrtem Beton, Hartschaumdämmkern und geeigneten Verbundmitteln. / Sandwich constructions made of thin metal sheets and structural concrete have been reliable and economic composite structures in the past decades. The application of thin-walled facings made of Textile Reinforced Concrete (TRC) combines the advantages of this construction and allows for slender construction thicknesses despite the progressing demands on thermal insulation. This contribution reports on the development of models, which enable the realistic mechanical description of the load-bearing behavior of the sandwich panels made of two TRC-facings and a core of polymeric rigid foam together with suitable connecting devices.

Despite the past decade’s increased adoption of scientific methodologies by startups, most still fail to scale into large companies. The paralyzing plethora of advice, theory and models recommended to startups is poorly matched by practical advice on the applicability and implications of actually following the recommendations. In this action-based research I, an IT consultant for twelve years and founder/co-founder of several startups, try out and evaluate the applicability of methodologies for applying scientific management principles to innovation in early-stage startups. In the first part of my research, I use an naive explorative hands-on approach which results in insights into the limited applicability of popular methodologies such as Growth Hacking and The Lean Startup. These limitations are especially pronounced for early-stage startups who are yet to launch a minimum viable product (MVP), as well as those that have trouble to decide which hypotheses are the riskiest. Most actionable insights during this part stemmed from the engagement in various thought-experiments and reflections, and not from external customer feedback. To remedy this, and to thoroughly evaluate the applicability of a pre-launch market assessment method, I engage in market opportunity discovery following the recommendations set forth by Outcome-Driven Innovation (ODI). This hands-on in-depth approach yielded seemingly high-quality actionable insights with direct implications for the product and marketing strategy of the studied early-stage startup. In the discussion part, I reflect over the applicability of the evaluated methodologies and argue that the main difference between applicable and non-applicable methodologies is whether they are manufacturing-based or needs-based. Finally, I reflect over possible implications and suggest that a startup community wide change of mindset from manufacturing-based methodologies such as The Lean Startup to needs-based methodologies such as Outcome-Driven Innovation will minimize the startup innovation-process variability and increase startup efficiency dramatically on a global scale.

Barnperspektivet har inte alltid prioriterats i Sveriges lagstiftning och barn har heller inte alltid fått vara delaktiga i beslut gällande sig själva. Regeringen skrev en proposition med argument för att inkorporera barnkonventionen till svensk lag och den 1 januari år 2020 genomfördes detta. Denna studies syfte har varit att se hur barnperspektivet, samt barns rättigheter kommer till uttryck i propositionen till barnkonventionen, vilka argument som har använts för att motivera inkorporeringen samt hur detta kan avse påverka det sociala arbetet. Studien har tre frågeställningar formulerade utifrån syftet som har besvarats genom metoden What’s the problem represented do be (WPR), som är en analysmetod inom policyanalys, samt med ett barndomssociologiskt perspektiv. Resultatet har visat att barnperspektivet samt barns rättigheter är centrala begrepp i propositionen samt att ett stärkande av dessa i praktiken är ett av argumenten som används för att inkorporera barnkonventionen. Deras starkaste och återkommande argument grundas i att stärka barnets rättigheter och delaktighet i beslut samt att öka barnperspektivet i myndighetsutövning. I samband med beslutet att inkorporera barnkonvention i svensk lag tillkom det nya transformeringar av befintliga lagar, vilket i sin tur påverkar det sociala arbetet, både i arbetssätt och metoder, samt i förhållningssättet gentemot barn. Ett sätt som lagstiftaren kunnat avse att påverka det sociala arbetet är genom att implementera ett ökat barnrättsbaserat synsätt, vilket ska genomsyra alla verksamheter som arbetar med och för barn.

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