Mit den Projekt Sommerakademie Informatik: IT is your turn girls soll die Attraktivität der IT- Studienfächer bei Studieninteressentinnen gesteigert werden. Dabei steht eine geschlechtersensible Organisationsentwicklung insbesondere im Bereich der Studienwerbung und Außendarstellung im Mittelpunkt. Bei der Konzeption der zweiten Sommerakademie Informatik: IT is your turn girls haben wir uns neben sozialwissenschaftlichen Erkenntnissen aus der Geschlechterforschung auch auf die Forschungsergebnisse zur Sommerakademie Informatik 2009 bezogen, um die Auswirkung struktureller Prozesse zu minimieren. Der vorliegende Projektbericht erläutert die Planung und Umsetzung nach den Richtlinien des Konzeptes sowie die Besprechung der Ergebnisse aus der Teilnehmerinnenbefragung vor und nach der Sommerakademie Informatik: IT is your turn girls 2010.

Messunsicherheiten sind ein wesentlicher Bestandteil eines Messergebnisses. Das Thema wird jedoch oft vernachlässigt in der Sekundarstufe, und die Schüler*innen haben viel Schwierigkeiten mit Varianz in Datensätzen. Diese Arbeit berichtet über die Gestaltung und Evaluierung einer digitalen Lernumgebung (DLE). Die konzeptbasierte DLE nutzt ein etabliertes Sachstrukturmodell für die Sekundarstufe und besteht aus drei Teilen: Einführung in und Grundlagen von Messunsicherheiten, Berechnung und Bedeutung des Mittelwerts und der Unsicherheit sowie dem Vergleich von Messergebnissen. Die Wirkung wurde in einem Prä-Post-Design getestet. Der Prä- und Posttest umfasste zwei Prüfungsaufgaben: einen Kompetenztest und ein Datenvergleichsproblem, bei dem eine mit Begründung versehene Entscheidung getroffen werden musste. Die Teilnehmenden wurden nach dem Zufallsprinzip einer der drei Gruppen A, B oder C zugeteilt und bekamen einen, zwei oder alle drei Teile der DLE gezeigt. Insgesamt nahmen 154 Schüler*innen der Klassenstufen 8 bis 11 freiwillig und selbstständig teil. Diese Studie hat gezeigt, dass mit zunehmendem konzeptionellen Wissen die Fähigkeit der Schüler*innen, Datensätze zu vergleichen, deutlich zunimmt. Der konzeptbasierte DLE kan selbstständig von Schüler*innen in 60 Min. bearbeitet werden. Das Kodiermanual ermöglicht eine schnelle Analyse der Begründungen der Schüler*innen im Rahmen von Datenvergleichsproblemen. Dieses Manual kann leicht in der Schule eingesetzt werden. Diese Codes zeigen in einem feinkörnigen Detail die Qualität und Entwicklung der Fähigkeit der Schüler*innen, Datensätze zu vergleichen. Es wurden keine Korrelationen zwischen der Klassenstufe und dem Ergebnis des Kompetenztests oder der Begründungsqualität gefunden. Der Erfolg der DLE und das gleichzeitige Fehlen eines solchen Zusammenhangs bedeutet, dass das Thema Messunsicherheiten bereits in der achten Klasse eingeführt werden kann. / Measurement uncertainties are an essential part of a measurement result. The topic is, however, rarely addressed in secondary education and students struggle a lot with variance in data sets. This thesis reports on the design and evaluation of a Digital Learning Environment (DLE). The concept-based DLE uses an established subject matter model for secondary education and consists of three parts: introduction to and underpinnings of measurement uncertainties, calculation and meaning of the mean value and the uncertainty, and the comparison of measurement results. The effect was tested in a pre-post design. The pre and post-test consisted of two probes: a competency test and a data comparison problem where a decision had to be made supported by a justification. Participants were randomly assigned one of three groups A, B, or C and were shown one, two, or all three parts of the DLE. A total of 154 students of grades 8-11 participated voluntarily and independently. This work has shown that with increased conceptual knowledge, students' ability to compare data sets increases significantly. The concept-based teaching can be done by having students work independently with the DLE in 60 min. The coding manual allows for a quick analysis of students' justifications in the context of data comparison problems. This coding manual can be easily used in school settings. These codes show, in a fine-grained detail, the quality and development of students' ability to compare data sets. No correlations have been found between grade level and competency test score or justification quality. The success of the DLE and the simultaneous absence of any such correlation means that the topic of measurement uncertainties can be introduced as early as eighth grade.

Thesis (M.A.)--Miami University, Dept. of History, 2006. / Title from first page of PDF document. Includes bibliographical references (p. 59-64).

The teaching project HIS (Holistic International STEMs – Learning with case studies and real life industry experiences) is presented as part of the poster session. Experience shows that German (outgoing) and international (incoming) students have difficulties to communicate properly at the workplace in Germany as well as abroad due to language differences, especially in STEM terms. In addition, young professionals often do not have experience in working in international or virtual teams. All those challenges are current job requirements, not just in global companies. But: How to teach this in higher education? The classical formats of lectures or seminars are not suitable. Therefore, there is a need to develop and prove new teaching formats, within the curriculum as well as extracurricular. With focus on STEM subjects the presented project combines three current impacts on higher education: Internationalization, digitalization, and labor market orientation. The concept of the project is that STEM students from different countries will attend an international, virtual summer school (April to June 2016). They solve real-life job case studies together in small interdisciplinary teams. The participants are mentored by national and international industry partners and STEM professors. With such, the participants will improve language and communication skills, and apply and exchange their expertise as well as gain intercultural work experience. The concept was awarded by the “Stifterverband für die deutsche Wissenschaft” (Donors association for the promotion of humanities and sciences in Germany). The poster introduces the project and exemplary the three-dimensional assignments of one case study (occupational, lingual, and intercultural). At present, the project should be handled as a “project in progress”. Keywords: technology, teaching projects, STEM, internationalization, digitalization, labor market orientation, employability, job orientation, competencies, development of new curricula

O estudo da moeda contribui para a compreensão da dinâmica do Antigo Sistema Colonial. Entre Portugal e Brasil, no seiscentos, ocorria uma evasão monetária em virtude, sobretudo, das vantagens comerciais fundadas no exclusivo metropolitano. Esta evasão foi agravada pela lei de 4 de agosto de 1688, que determinava um aumento de 20% no valor extrínseco das moedas portuguesas e que as patacas espanholas deveriam correr a peso pela razão de 100 réis a oitava. O objetivo da lei era combater o cerceio e evitar a evasão monetária na metrópole. Entretanto, no Brasil, cujo meio circulante era composto predominantemente por patacas cerceadas, houve resistências, insatisfações e até motins contra a implementação da lei, que diminuiria o valor extrínseco do dinheiro dos moradores na colônia. O governador-geral Câmara Coutinho publicou e fez cumprir a lei, o que intensificou ainda mais o escoamento de moedas do Brasil para Portugal, acentuando ainda mais as dificuldades dos senhores de engenho e lavradores, num momento crítico da produção açucareira. Quando a escassez de dinheiro comprometeu a arrecadação, ordenou-se a fundação da Casa da Moeda na Bahia para produção de moedas provinciais. / The study of currency contributes to the understanding of the dynamics of the Old Colonial System. Between Portugal and Brazil in the seventeenth century, there was a evasion of coins due mainly to commercial advantages based on metropolitan exclusive. This evasion was intensified by the law of August 4th, 1688, which determined an increase of 20% in the extrinsic value of the Portuguese coins, and that the Spanish patacas should run by the weight ratio of 100 reis by one eighth. The purpose of the law was to combat the curtailment and prevent the evasion of coins in the metropolis. However, in Brazil, whose currency was composed predominantly by curtailed patacas, there were resistances, dissatisfaction and even riots against the implementation of the law, which would decrease the extrinsic value of the money of the residents in the colony. The general governor Câmara Coutinho published and did comply with the law, which further intensified the flow of coins from Brazil to Portugal, further accentuating the difficulties of the senhores de engenho and lavradores, at a critical moment in sugar production. When the money shortage undertook the tax collection, it was ordered the founding of the Mint in Bahia for the production of provincial coins.

Diese Dissertation besteht aus drei Aufsätzen, die zur empirischen Literatur über Beschäftigung und Löhne auf dem deutschen Arbeitsmarkt beitragen. Der erste Aufsatz untersucht die Auswirkungen eines großen und unerwarteten Zustroms von Migranten auf den westdeutschen Arbeitsmarkt zwischen 1988 und 1993 auf die Löhne und Beschäftigung der einheimischen Arbeitnehmer. Die Analyse zeigt, dass ein Anstieg der lokalen Beschäftigung von Migranten die durchschnittlichen Löhne und Beschäftigung kurzfristig reduziert, der Effekt langfristig jedoch verschwindet. Der zweite Aufsatz analysiert den kausalen Effekt einer Lockerung des deutschen Kündigungsschutzgesetzes (KSchG) im Jahr 2004 auf unterschiedliche Arbeitsmarktergebnisse auf Firmenebene. Dazu nutzt der Aufsatz eine Änderung des Schwellenwerts der Mindestbetriebsgröße zur Anwendbarkeit des KSchG von fünf auf zehn Beschäftigte als ein Quasi-Experiment. Die Ergebnisse der empirischen Analyse liefern keine robuste Evidenz für einen Effekt auf die Einstellungs-, Abgangs-, Nettobeschäftigungs- und Churning-Raten sowie auf Löhne und temporäre Beschäftigung. Dagegen gibt es Evidenz, dass die Einstellungs- und Nettobeschäftigungsraten von Frauen zugenommen haben. Der dritte Aufsatz untersucht die Entwicklung der MINT-Beschäftigung und -Löhne in Westdeutschland zwischen 1980 und 2010. Die Analyse deutet auf einen Anstieg der MINT-Beschäftigung und -Löhne, der zeitlich mit dem Anstieg der Lohnungleichheit zusammenfällt. Darüber hinaus zeigt der Aufsatz, dass die Zunahme des Lohnunterschieds zwischen MINT und nicht-MINT Arbeitern durch Angebots- und Nachfragefaktoren im Rahmen eines MINT-verzerrten technologischen Wandels auf Basis einer CES-Produktionsfunktion erklärbar ist. Zuletzt deutet eine alternative Analyse der MINT-Prämie unter Nutzung von Schätzwerten aus einem Modell mit additiven Arbeiter- und Firmeneffekten darauf hin, dass der durch Firmeneffekte erklärte Anteil der MINT-Prämie mit der Zeit bedeutend zugenommen hat. / This thesis consists of three essays that contribute to the empirical literature on employment and wages in the German labor market. The first essay investigates the impact of a large and unexpected inflow of immigrants into the West German labor market between 1988 and 1993 on native wages and employment. The analysis indicates that an increase in local immigrant employment reduces average native wages and employment in the short run; however, the effect tends to vanish in the longer term. The second essay analyzes the causal effect of a relaxation of the German Protection Against Dismissal Act (PADA) in 2004 on different labor market outcomes at the firm level. Specifically, the essay exploits a change of the minimum establishment size threshold determining coverage by the PADA from five to ten employees as a quasi-experiment. The results from the empirical analysis do not provide robust evidence for an effect on overall hiring, separation, job flow, and churning rates as well as wages and temporary employment. However, there is some evidence of increases in the hiring and job flow rates of women. The third essay studies trends in STEM employment and wages in West Germany between 1980 and 2010. The analysis indicates an increase in STEM employment and wages that coincides with the rise in wage inequality during the same period. Moreover, the essay shows that the increase in the wage differential between STEM and non-STEM workers can be explained by supply and demand factors under a STEM-biased technological change within a CES production framework. Finally, an alternative assessment of the STEM premium exploits estimates from a model with additive worker and firm fixed effects and suggests that the fraction of the STEM premium that is explained by firm effects has increased considerably over time.

From April to June 2016 a new and exclusively virtual teaching format – the international STEM1 Summer School – was provided at the University of Mining and Technology in Freiberg. The paper presents the approach, didactical design, and results of evaluation. The international STEM Summer School was developed and tested within the project „Holistic International STEMs - Learning with case studies and real-life industry experiences“. The aim was to better prepare STEM students for challenges in the current professional world that are characterized by in-ternationalization and digitalization. The project offers some ideas on how to teach the currently re-quired skills and competencies by industry in higher education. The conceptualization of the project was made possible with funding from the Donors\' Association for the Promotion of Humanities and Sciences in Germany2. The exclusively virtual collaboration is due to the different geographical distances and locations of the participating students, which generates specific challenges. On the one hand, technical conditions at the particular places of residence have an impact on virtual collaboration. On the other hand, cultural, lingual, and occupational differences, as well as the differing media literacy, play an important role. In addition, the setting of objectives and provision of incentives is decisive for the shared virtual work. The results of the first round of the international STEM Summer School indicate possible solution strategies based on the three areas of media use, interaction, and task orientation. During the Summer School, students from ten different countries solved real-life job case studies in small interdisciplinary teams. The exchange took place with the help of various e-learning tools like the virtual classroom, wiki, forum and e-portfolio. The participants were mentored by national and international industry partners, STEM professors, and e-tutors. After nine weeks work in intercultural teams they presented their results and learning outcomes during a web conference. The following article focusses on the evaluation results as well as selected insights and challenges.

Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2018-05-25T13:08:12Z No. of bitstreams: 1 ALANY MOISA BEZERRA DE ALMEIDA -- DISSERTAÇÃO PPGSA PROFISSIONAL 2018..pdf: 841322 bytes, checksum: 839ba5af833854ad276c1cdc955c7341 (MD5) / Made available in DSpace on 2018-05-25T13:08:12Z (GMT). No. of bitstreams: 1 ALANY MOISA BEZERRA DE ALMEIDA -- DISSERTAÇÃO PPGSA PROFISSIONAL 2018..pdf: 841322 bytes, checksum: 839ba5af833854ad276c1cdc955c7341 (MD5) Previous issue date: 2016-11-29 / A hortelã é uma planta bastante utilizada como planta medicinal e alimentícia, sendo produzida por agricultores em sistema familiar de produção. Dois experimentos foram conduzidos na Fazenda Experimental Rafael Fernandes, no distrito de Alagoinha, zona rural de Mossoró-RN, com o objetivo de avaliar o cultivo orgânico da hortelã sob diferentes doses de jitirana e épocas de colheita. O primeiro experimento foi conduzido no período de 13/08/2015 a 09/12/2015, e o segundo no período de 09/11/2015 a 10/12/2015, no delineamento experimental de blocos completos casualizados com os tratamentos arranjados em esquema fatorial 4 x 3, com três repetições. O primeiro fator foi constituído por quatro doses de jitirana (0,0; 0,5; 1,0 e 1,5 kg m-2 de canteiro em base seca) e o segundo fator, correspondendo a três épocas de colheita (30; 60 e 90 dias após o transplantio). Para a cultura da hortelã utilizou-se a cultivar “Mentha piperita”. As características avaliadas foram as seguintes: altura da biomassa, produção de biomassa, número de molhos, massa seca, teor e rendimento de óleo. Alguns indicadores econômicos foram observados, tais como: custo de produção, renda bruta, renda líquida, taxa de retorno e índice de lucratividade. Houve interação entre os fatores-tratamentos para o primeiro cultivo (produção, número de molhos e teor de óleo) e na rebrota da hortelã, nas características (rendimento e teor de óleo). No primeiro cultivo, houve acréscimo no número de molhos de hortelã em função dos fatorestratamentos com valores máximos de 1300; 3503 e 2651 unidades/100m2 nas épocas 30;60 e 90 dias, correspondendo as doses 1,3; 0,2 e 0,2 kg/m2, respectivamente. Na rebrota apresentou número médio de molhos de 2805 unidades/100 m2 (30 dias) e 2542 unidades/100 m2 (60 dias). A dose de 0 kg m2 de jitirana na época de colheita de 60 dias em primeiro cultivo, proporcionou rentabilidade liquida de R$ 3.458,00, taxa de retorno da ordem de R$ 3,26 e índice de lucratividade de 69,3%. Para a rebrota ocorreu rentabilidade liquida de R$ 2.753,00, taxa de retorno de 2,80 e índice de lucratividade de 64,2% na dose de 0 kg m-2 e época de colheita de 30 dias. A produção de hortelã em sistema orgânico de produção constitui-se em alternativa para o produtor. / The plant consortium presents itself as one of the most appropriate methods to the practice of horticulture, in agroecological molds with numerous advantages in the environmental aspect, productive and economical. Two experiments were conducted at the Experimental Farm Rafael Fernandes in Alagoinha district, a rural area of Mossoró- RN, in order to assess the agricultural economic viability of mint consortium with coriander fertilized with manure jitirana more beef. The first experiment was conducted in the period from 08.11.2015 to 11.05.2015 and the second experiment in the period from 11.27.2015 to 22.03.2016, in a randomized complete block with treatments arranged in a 2x4 factorial design with three replications. The first factor consisted of monocropping and intercropping mint and coriander, and the second factor was the different doses of jitirana mixed with manure (0.0, 1.0, 2.0 and 3.0 kg m- 2 site). For mint culture was used to cultivate "Mentha piperita". For the coriander was used to cultivate "Verdão". The characteristics evaluated for the Mint culture were as follows: height of biomass, fresh weight, number of sauces, dry mass, oil content and yield. For the coriander crop the following characteristics were evaluated: plant height, number of stems plant-1, productivity, number of sauces and dry mass. Also economic indicators were used, such as land equivalent ratio (LER), cost of production, gross income, net income, rate of return and profitability index. The use of more manure jitirana cattle contributed to the increase of the productive characteristics of the consortium in the two growing seasons, with number of mint sauces 17.6 and 5.8 in 3.0 doses and 2.2 kg m-2 respectively. For coriander crop, the values were 16.5 and 15.3 m2 sauces in 3.0 kg dose m-2, respectively. The equivalent area obtained in the two experiments were 1.72 and 1.78, respectively. The greater economic efficiency of the consortium was observed in the first growing season with the application of 3.0 kg m-2 of more manure jitirana cattle in an area of 100 m2, with gross income of R $ 3,761.00; net income of R $ 2,727.50; return rate of R $ 3.64 and 72.52% profitability index.

O estudo da moeda contribui para a compreensão da dinâmica do Antigo Sistema Colonial. Entre Portugal e Brasil, no seiscentos, ocorria uma evasão monetária em virtude, sobretudo, das vantagens comerciais fundadas no exclusivo metropolitano. Esta evasão foi agravada pela lei de 4 de agosto de 1688, que determinava um aumento de 20% no valor extrínseco das moedas portuguesas e que as patacas espanholas deveriam correr a peso pela razão de 100 réis a oitava. O objetivo da lei era combater o cerceio e evitar a evasão monetária na metrópole. Entretanto, no Brasil, cujo meio circulante era composto predominantemente por patacas cerceadas, houve resistências, insatisfações e até motins contra a implementação da lei, que diminuiria o valor extrínseco do dinheiro dos moradores na colônia. O governador-geral Câmara Coutinho publicou e fez cumprir a lei, o que intensificou ainda mais o escoamento de moedas do Brasil para Portugal, acentuando ainda mais as dificuldades dos senhores de engenho e lavradores, num momento crítico da produção açucareira. Quando a escassez de dinheiro comprometeu a arrecadação, ordenou-se a fundação da Casa da Moeda na Bahia para produção de moedas provinciais. / The study of currency contributes to the understanding of the dynamics of the Old Colonial System. Between Portugal and Brazil in the seventeenth century, there was a evasion of coins due mainly to commercial advantages based on metropolitan exclusive. This evasion was intensified by the law of August 4th, 1688, which determined an increase of 20% in the extrinsic value of the Portuguese coins, and that the Spanish patacas should run by the weight ratio of 100 reis by one eighth. The purpose of the law was to combat the curtailment and prevent the evasion of coins in the metropolis. However, in Brazil, whose currency was composed predominantly by curtailed patacas, there were resistances, dissatisfaction and even riots against the implementation of the law, which would decrease the extrinsic value of the money of the residents in the colony. The general governor Câmara Coutinho published and did comply with the law, which further intensified the flow of coins from Brazil to Portugal, further accentuating the difficulties of the senhores de engenho and lavradores, at a critical moment in sugar production. When the money shortage undertook the tax collection, it was ordered the founding of the Mint in Bahia for the production of provincial coins.

Made available in DSpace on 2017-07-10T17:59:30Z (GMT). No. of bitstreams: 1 Ana Claudia Cabral dos Santos.pdf: 1804875 bytes, checksum: 59accd259357d955c055e44645dee662 (MD5) Previous issue date: 2014-12-05 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Biodiesel is a fuel that can be obtained from renewable sources and due to its chemical composition is sensitive to oxidation. To increase their oxidative stability is necessary to add antioxidants, which are compounds capable of avoiding or delaying oxidation reactions and can be synthetic or natural, from the natural, we highlight a variety of plants with antioxidant activity, among them the mint (Mentha spicata L.) and Acerola (Malpighia glabra L.). The objective of this study was to evaluate the oxidative stability of biodiesel in the presence of natural antioxidants from extracts of Acerola and mint leaves obtained by conventional extraction and supercritical CO2 on temperature and various pressure using oxidative stability in Rancimat test, avaliou- is also the synthetic antioxidant TBHQ, to compare the results obtained with the use of the plant extracts. The effects of temperature and pressure on the yield and quality of the extract. The best induction times were obtained for biodiesel plus the supercritical extracts of Acerola 40 °C and 150 bar condition (1.38 h) and 60 °C and 250 bar (1.07 h) and the supercritical extract of mint conditions of 40 °C and 150 bar (1.08 h), 40 °C and 250 bar (1.71 h) and 60 °C and 250 bar (2.04 h) and soxhlet extract with hexane obtained from both acerola (2.84 h) and Mint (2.87 h), which showed greater induction time of the control (1.04 h). Biodiesel plus the synthetic antioxidant TBHQ got time higher induction to control and biodiesel plus extracts and from 36.95 hours. The oxidative stability of biodiesel was more increased when the extracts obtained by conventional extraction using Hexane as the solvent, which can be extracted from a larger quantity of compounds with antioxidant activity. / Biodiesel é um combustível que pode ser obtido de fontes renováveis e devido sua composição química é sensível à oxidação. Para aumentar sua estabilidade oxidativa é necessário acrescentar antioxidantes, que são compostos capazes de evitar ou retardar reações de oxidação e podem ser sintéticos ou naturais, dentre os naturais, destacam-se uma variedade de plantas com atividade antioxidante, dentre elas a Hortelã (Mentha spicata L.) e Acerola (Malpighia glabra L.). O objetivo deste trabalho foi avaliar a estabilidade oxidativa do Biodiesel na presença de antioxidantes naturais dos extratos das folhas de Acerola e Hortelã obtidos por extração convencional e com CO2 supercrítico em condições de temperatura e pressão variadas, utilizando teste de estabilidade oxidativa em Rancimat, avaliou-se, também, o antioxidante sintético TBHQ, para comparar com os resultados obtidos com a utilização dos extratos das plantas. Foram avaliados os efeitos da temperatura e Pressão no rendimento e da qualidade do extrato. Os melhores tempos de indução obtidos foram para o Biodiesel acrescido dos extratos supercríticos da Acerola nas condições 40 °C e 150 bar (1,38 h) e 60 °C e 250 bar (1,07 h) e os extratos supercríticos da Hortelã nas condições de 40 °C e 150 bar (1,08 h), 40 °C e 250 bar (1,71 h) e 60 °C e 250 bar (2,04 h) e os extratos soxhlet obtidos com hexano, tanto da Acerola (2,84 h) quanto da Hortelã (2,87 h), que apresentaram tempo de indução maior que o controle (1,04 h). O Biodiesel acrescido do antioxidante sintético TBHQ obteve tempo de indução superior ao controle e ao biodiesel acrescidos dos extratos, sendo de 36,95 horas. A estabilidade oxidativa do Biodiesel foi superior quando acrescido dos extratos obtidos por extração convencional utilizando Hexano como solvente, que, pode ter extraído uma maior quantidade de compostos com atividade antioxidante.