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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
81

以語意分析及Bloom理論為基礎之線上測驗輔助及智慧型評分系統 / A Study on Computer Aided Testing and Intelligent Scoring: Based on Semantic Analysis and Bloom's Taxonomy

應鳴雄, Ying, Ming-Hsiung Unknown Date (has links)
隨著電子化學習(E-Learning)環境技術的普及,線上學習與線上測驗已成為資訊教育的重要議題。但是因為填充題及問答題等測驗類型在線上測驗系統上實施有許多問題需克服,當線上測驗系統提供填充題及問答題等題型測驗時,將會產生嚴重的測驗評分等化(Equation)問題。目前線上測驗系統大多仍以是非題、單選題及複選題等題型為主,雖有少數線上測驗系統提供填充題及其他開放式填答的測驗類型,但仍未針對受測者填答之答案進行的語意自動評分。 / 另外,現有線上測驗系統未提供教師設定個人化的評分風格,對於多位教師共用測驗系統平台時所產生的評分規則認知衝突,系統也未提供支援與解決,為了解決上述問題,並使線上測驗能具備與傳統測驗相同的評量效力,本研究使用模糊理論、相似語意詞庫及人工智慧概念等,發展一個線上測驗及智慧評分子系統,此系統除了包括一般測驗系統所提供的是非、單選、複選等題型外,也包含採用智慧評分機制來評分的填充題,完成雛形系統的建置後,本研究再針對傳統紙筆測驗、一般型評分機制、及本研究的智慧型評分機制進行評分效力比較的實證研究。 / 此部分的實證研究結果顯示,在包含填充題型的測驗中,不同的評分機制在測驗成績的評分結果上會有顯著差異,而智慧型評分機制運作初期雖然可以減少與紙筆評分間的差異,並改善一般型評分機制的評分效力,但仍無法在統計上獲得具有相同評分效力的結果。但是智慧評分機制在擴充詞彙語意後,「已擴充語意後的智慧評分機制」與「紙筆評分」的評分結果並無顯著差異,其顯示出若在包括填充題型的線上測驗系統中加入具有擴充詞彙語意關係知識的功能,並提供多功能的智慧型模糊評分機制,允許教師輸入代表個人評分風格習慣的評分規則參數,則線上評分系統將有可能具有與紙筆評分相同的評分效力來處理具有填充題題型的測驗工作。 / 然而線上測驗並不只是在測驗後給予受測者一個分數而已,而應該讓學習者了解自己在知識向度及認知向度的學習結果,因此測驗系統的試題若能包含Bloom教育目標分類資訊,將促使測驗活動能給予學習者更大的幫助。為了降低教師製作試題的負擔,本研究也以本體論、詞彙網路、Bloom分類理論、中文語意庫、人工智慧為基礎,提出一個輔助教師產製題庫的系統架構,並使電腦所產製的試題能涵蓋新版Bloom認知領域教育目標分類中的知識向度及認知向度概念。本研究在電腦輔助教師產製題庫的成果上,不僅能減少教師人工出題的負擔,系統產製的試題也能評量事實、概念及程序等三種知識及記憶、了解、應用、分析及評鑑等五種認知向度能力。受限於線上測驗系統能自動評分的四種題型,本研究尚無法產製屬於創造認知層次的試題,但是卻已能產製出包含基本知識概念的試題,並能提供具有Bloom概念的測驗題庫來評量學習成效。此外,本研究亦針對電子化學習環境,提出適用於線上測驗系統的試題品質及評分等化能力評估概念模式,強調Bloom理論在線上測驗系統環境中的使用範圍與限制。此模式也透過測驗等化觀念,針對教育領域測驗理論在評估試題品質概念上提出新的觀點。 / Since the rapid E-learning development, the online learning and testing have been important topics of information education. Currently teachers still need to spend much time on creating and maintaining on-line testing item banks. Some researches have applied the new Bloom's taxonomy to design meaningful learning assessments. This research has applied ontology, Bloom's taxonomy, Chinese semantic database, artificial intelligence, semantic web, to design an on-line course learning system to assist teachers in creating test items. / Most of present on-line testing only has multiple choice items and true-false items. Though some provide fill-in-blank items, they can only recognize the answers either all right or all wrong through the simple computer binary pattern matching. In order to have the same evaluation effects as the traditional paper-and-pencil testing, this research will adopt the concepts of fuzzy theory, thesaurus, set, and artificial intelligence to develop the fuzzy scoring mechanism. The proposed on-line testing system will have true-false, multiple-choice, and fil-in-blank items. The latter will be graded through fuzzy judgment that is naturally endowed by the human teachers. / In addition, the past research indicated that e-learning students would learn more if provided appropriate feedback messages. In this research will add feedback messages to the proposed system according to different situations. The proposed on-line testing system will not only grade the test items, but also explain the answers and provide related materials to the testers. / The result of study are: (1) we could design the test items that would need a particular cognitive process to a particular type of knowledge, though we still could not have items to test “creative” level of cognitive process; (2) the test items could be used to assess the learning level meaningfully; (3) the computer would assist teachers to create a large number items, and save time of making item; (4) that different scoring mechanisms have a significant effect on test scores; (5) at the beginning, though our fuzzy on-line testing system is significantly better than the usual on-line testing system, it could not achieve the same effect as the paper-and-pencil testing; (6) after expanding semantic vocabularies from feedbacks, our fuzzy scoring mechanism is equivalent to paper-and-pencil.
82

Factors predicting success in the final qualifying examination for chartered accountants

Wessels, Sally 11 1900 (has links)
Anyone desiring to qualify as an accountant or auditor is required to pass an examination as approved by the Public Accountants' and Auditors' Board to establish whether candidates have attained the required standard of academic knowledge in terms of the syllabi laid down by the Board, as well as whether they are able to apply that knowledge in practice (P AAB, 1995). However each year many students fail this very important examination. The reasons for this are not clear and the purpose of this research is to determine whether: personality; vocational interests; intelligence; matriculation Mathematics and home language (English/ Afrikaans) results, predict success in the QE, by comparing a group of successful and unsuccessful QE candidates. The logistic regression, discriminant analysis and t-test statistical procedures, indicated that: warmth (A), liveliness (F), rule-consciousness (G), social boldness (H), apprehension (0), self-reliance (Q2), perfectionism (Q3), tension (Q4), computational interest, social services interest, mechanical interest, Mental Alertness and matriculation home language, are significant factors to consider when identifying candidates likely to be successful in the QE. / Industrial and Organisational Psychology / MCOM (Industrial Psychology)
83

Topografias de controle de estímulos e equivalência de estímulos : variações paramétricas do procedimento de máscaras / Stimulus control topographies and stimulus equivalence: parametric variations of the blank procedure

Arantes, Ana Karina Leme 05 July 2012 (has links)
Made available in DSpace on 2016-06-02T20:30:07Z (GMT). No. of bitstreams: 1 4749.pdf: 4117281 bytes, checksum: 6047b5a8a4c0428901b24875ac28c98a (MD5) Previous issue date: 2012-07-05 / Universidade Federal de Minas Gerais / Stimulus equivalence literature has shown robust data, but with some result variability between participants, with some forming classes promptly and others who do not demonstrate the expected class formation. Matching to sample (MTS) is the commonly used procedure to verify these relationships formation. However, a situation involving experimental MTS is rather complex regarding the number of potential relationships, so that the participant can form classes based on different equivalence relations that those manipulated by the experimenter. For example, responses that are counted as instances of the same relationship may include different control topographies, some responses controlled by relations of selection (when control of the participant's response is given "selecting" the correct stimulus in the presence of a particular model) while others are controlled by rejection (when there is a "rejection" of a incorrect stimulus in the presence of a particular model). One possibility to check and monitor the different control relations during the baseline training is to use special procedures to induce and identify it. One of these procedures is the blank procedure in which a black square is gradually introduced over attempts conditional discrimination baseline so as to occlude participant s sight of it. This way, separately topographies of selection and rejection can be checked, as well as differences in the formation of equivalence relations. AB, BC and CD relations trainings were programmed, each set with three different stimuli (eg: A1, A2 and A3; B1, B2 and B3, etc.). Control only for rejection or only by selection in baseline training conditional relations BC were planned in one of the trainings, and results compared with another training in which all relations were taught either by selection or by rejection. Other parametric variations (nodal distance increase and extensive pre-training role in positive equivalence results using the mask) were also investigated to advance understanding of the variables that may be related to the equivalence formation. The results indicate that learning BC relationship with only one control relation is not sufficient for the equivalence classes ready formation. These are not guaranteed even if only selecting topographies are learned. Have the whole training - ensuring that the participant learns the relations either by rejection or by selection - assures equivalence formation in much more training opportunities. The results indicated that the extensive pre-training was useful to install some prerequisites behaviors required in the task pairing. Participants who passed the pre-training before starting the experiment were partially successful in achieving the criteria for baseline conditional relations learning training, but the generalized conditional responding did not occur as readily as expected, although it seems to have occurred faster for participants who had gone through extensive pre-training. / A literatura de equivalência de estímulos tem mostrado dados robustos, porém com certa variabilidade de resultados entre participantes, com alguns formando classes prontamente e outros que não demonstram formação das classes esperadas. O emparelhamento com o modelo (MTS) é o procedimento comumente usado para verificar a formação dessas relações, no entanto uma situação experimental envolvendo MTS é bastante complexa quanto ao número de relações potenciais, de tal modo que o participante pode formar equivalências com base em relações diferentes das que são definidas pelo experimentador. Por exemplo, as respostas que são computadas como instâncias de uma mesma relação podem incluir diferentes topografias de controle, sendo algumas respostas controladas por relações de seleção (quando o controle da resposta do participante é dado pelo selecionar o estímulo correto diante de um determinado modelo) enquanto outras são controladas por rejeição (quando há a rejeição de um estímulo incorreto na presença de um determinado modelo). Uma possibilidade de verificar e controlar as diferentes relações de controle durante a linha de base é utilizar procedimentos especiais para induzir e identificar estas relações. Um desses procedimentos é o procedimento de máscaras, em que um quadrado negro é introduzido gradualmente ao longo de tentativas de discriminação condicional de linha de base, de modo a obliterar a visão do estímulo por parte do participante. Assim é possível verificar separadamente as topografias de seleção e de rejeição, bem como as diferenças nas formações de relações de equivalência. Foram programados treinos das relações AB, BC e CD, sendo que cada conjunto apresentava três estímulos diferentes (por exemplo: A1, A2 e A3; B1, B2 e B3 etc.), induzindo o controle apenas por rejeição ou apenas por seleção no treino de relações condicionais de linha de base da relação BC, em um dos treinos, e comparando-o com outro treino em que todas as relações eram ensinadas tanto por seleção quanto por rejeição. Outras variações paramétricas (aumento da distância nodal e papel do pré-treino extensivo nos resultados positivos para equivalência em treinos lineares com uso da máscara) também foram investigadas para avançar na compreensão das variáveis que podem estar relacionadas à formação de equivalência. Os resultados indicam que a aprendizagem da relação BC com apenas uma das relações de controle não é suficiente para a pronta formação de classes de equivalência, mesmo que sejam garantidas apenas relações controladas por seleção do S+. Já o treino completo - assegurando que o participante aprenda as relações tanto por rejeição quanto por seleção - garantiu a formação de equivalência em muito mais oportunidades que os outros treinos. Os resultados indicaram que o pré-treino extensivo foi útil em instalar alguns comportamentos pré-requisitos requeridos na tarefa de emparelhamento, na medida em que os participantes que passaram pelo pré treino antes de iniciar o experimento obtiveram sucesso parcial em alcançar os critérios de aprendizagem durante o treino das relações condicionais de linha de base, mas o responder condicional generalizado não ocorreu tão prontamente quanto o esperado, embora pareça ter ocorrido mais rapidamente para os participantes que haviam passado pelo pré-treino extensivo.
84

Beyond Morality : Alternative Gay Narratives in Mark Ravenhill’s Shopping and Fucking and Dennis Cooper’s The Sluts

Bjuggfält, Makz January 2017 (has links)
The gay male emerged as a visible public consumer during 1990s, when the LGBTQ movement in the United Kingdom and the United States was marked by conflicting commercial and political motives, heightened by the AIDS crisis. The cultural tension surrounding the gay male subject was reflected through various literary expressions. In the United Kingdom Mark Ravenhill’s Shopping and Fucking (1996), as part of the in-yer-face theatre, exploded in the face of the bourgeoisie. In the US America Dennis Cooper’s highly publicised George Miles Cycle (1989-2000), was followed by The Sluts (2004) as part of the transgressive literature, provoking both straight and gay communities. Through an analysis of themes such as capitalism, commerce, hyperreality, internalised fear, desire, and violence in the works, an alternative image of the gay male is distinguished. This is an image of the gay male subject that is complex, multi-faceted, contradictory and polyvalent. The characters relate differently to the hegemonic hyperreal role model, but are exposed to the same social structure that dictates their living conditions and positioning them as objects possible to practice violence on. The works provide a widened and complicated image the public image of the gay male. Their countercultural narratives trace how the gay male subject have been affected by the heteronormative society. When the provided stereotype is too narrow to express the burden and the joy of the contemporary gay male subject, alternatives, like the depictions by Ravenhill and Cooper, may allow the subject to fully possess the gay experiences of pain, sorrow and anger that he has been forced to bear. This research explores how the violence within the texts holds a liberating potential.
85

Computationally Robust Algorithms for Hypoid Gear Cutting and Contact Line Determination using Ease-Off Methodology

Gill, Harnavpreet Singh January 2020 (has links)
No description available.
86

Musik des 20. Jahrhunderts in der Hörerziehung – drei methodische Ansätze

E. Matz, Irene 22 September 2023 (has links)
Der Beitrag plädiert für eine stärkere Berücksichtigung der Musik des 20. Jahrhunderts im Curriculum Hörerziehung. Dies geschieht nicht zuletzt in Hinblick auf die Befruchtung, welche hierdurch der ›klassische‹ Bereich erfährt. Aus der Arbeit mit Neuer Musik in der Gehörbildung werden drei Schwerpunkte vorgestellt: Lars Edlunds Modus Novus, die Arbeit mit Lückentexten und die speziell für Hörübungen mit nichttonaler Musik entwickelte Methode der Klangskizze. / This article makes the case for the stronger consideration of twentieth-century music in the aural-skills curricula. The argument addresses among other things the benefits this brings for “classical” repertoire. Three priorities are set based on the author’s experience with new music in aural-skills class: Lars Edlund’s Modus Novus, fill-in-the-blank activities, and a method of sketching sound developed particularly for the training of aural skills regarding non-tonal music.
87

L'agitation comportementale des enfants à l'école : expression des procédés hors-jeu au Scéno-Test / The behavioral excitement of the children at the school : expression of the offside processes in Scéno-Test

Guillot, Mireille 27 June 2011 (has links)
Cette recherche concerne l’agitation comportementale de neuf enfants à l’école et utilise la médiation projective du Scéno-Test.En référence au concept de Moi-peau, la pratique clinique intersubjective des contenants de pensée dans l’institution fonde un regard sur la psychopathologie face à la Loi de février 2005 qui considère l’enfant agité comme handicapé. A l’intérieur de ces contenants en partie réducteurs sont analysés les trajets émotionnels des familles des enfants rencontrées, capables, à partir d’un groupe de professionnels au travail, de transformation psychique des dits contenants.En référence à la théorie des enveloppes psychiques, cette recherche propose, dans le cadre de l’examen psychologique, un dispositif consistant en la passation de 4 séances de Scéno-Test pour chaque enfant qui tient compte d’une pensée du "hors" significative de sa potentielle éjection de l’école.Dès lors, l’expression des procédés hors-jeu au Scéno-test relance par le moyen d’un jeu permis le psychisme de l’enfant.Au regard du concept de retournement, c’est la notion de fil projectif élaborée à partir d’une pensée du blanc du couvercle de jeu et la notion du négatif utilisée par le clinicien chercheur qui permettent de penser l’élaboration des réponses. Au sein d’enveloppes projectives, tel l’écran du rêve dans la dialectique de la veille et du sommeil, telle l’hallucination négative dans la dialectique de l’absence et de la présence, l’enfant reconstruit une scène d’origine traumatique.L’ensemble des données recueillies montre que l’enfant instable est en danger, même à l’école. Sa capacité au Scéno-Test à figurer, malgré les angoisses impensables, les secrets et/ou les dénis familiaux, lui permet de réaménager au sein de ces enveloppes projectives un espace interne suffisamment sécurisant pour être réinvesti.Ces premiers résultats permettent d’établir que le Scéno-Test, épreuve thématique, peut aussi être utilisé comme une épreuve structurale paradoxale. / This research concerns the behavioral excitement of nine school children and uses the Scéno-Test projective mediation.In reference to the "Ego-skin" concept, the intersubjective clinical practice of thought containers in the institution a glance on the psychopathology in front of Act of February 2005 considering the restless child as an handicapped person. Inside these partially reducing containers are analyzed the emotional families axes encountered who, from a group of professionals in the work, can transform these containers.In reference to the psychic envelopes theory, this research proposes, as part of the psychological examination, a device consisting of the signing of 4 sessions of Scéno-Test for every child who takes into account a thought of "except" significant of his potential ejection of the school.From then on, the expression of the offside processes in Scéno-test stimulus by means of an allowed game helped the psyche of the child.Towards the concept of reversal, it’s the notion of thread projectif elaborated from a thought of the blank cover game and the notion of the negative used by the clinician researcher that allow to think of the elaboration of the answers. Within projectives envelopes, such as dream screen in the dialectic of waking and sleep, such as the negative hallucination in the dialectic of the absence and the presence, the child reconstructs a scene of traumatic origin.The overall results show that unstable child is in danger, even at school. Its ability to appear and represent capacity in Scéno-Test, despite the unthinkable fears and the family secrets and/or denials, allows him to reorganize within these projectives envelopes an internal space enough reassuring to be reinvested.
88

Levantado do chão de José Saramago e Nenhum olhar de José Luís Peixoto: uma leitura do espaço narrativo

Campos, Juliana Sant'Ana 28 October 2009 (has links)
Made available in DSpace on 2016-04-28T19:59:19Z (GMT). No. of bitstreams: 1 Juliana Santana Campos.pdf: 802506 bytes, checksum: 5027af9f7fa4e984a8ce9986a052ef28 (MD5) Previous issue date: 2009-10-28 / Secretaria da Educação do Estado de São Paulo / The main objective of this study is to present a reading of the narrative space in two contemporary Portuguese novels, one of them is Levantado do Chão by José Saramago (2005) and the other, Nenhum Olhar by José Luís Peixoto (2005). In both novels, the analyzed space is Alentejo, presented as a place that the limit between life and death is faint. The writers also use such space to reflect about specific questions of this area. In both plots, the store of the characters is develop by generations in which the pain cycle of pain and/or work need to be broken. Each action unleashed by a character, in a specific place, bringing on significant changes for the space of the plot as a whole. To develop the analyze of the space the theoretical criticism proposals belonging to Gaston Bachelard and Antonio Dimas were used, as well as those related to utopia and dystopia from Carlos Eduardo Ornelas Berriel, Lyman Tower Sargent, Tomas More, Ildney Cavalcanti, J. M. Sousa Nunes, and nihilism from Rossano Pecoraro. The conceptions related to utopia and dystopia, however, were used basically to analyze Levantado do Chão and reveled that the novel varies between the two genders. At the beginning, Saramago s book was based on the dystopic gender for, latter, change to utopic. The nihilism conception, in turn, was used to study the novel Nenhum Olhar, because this is based in the absolutely nothing, not presenting any possibility of future for the characters. Finally, both were compared and common points were reveled, such as the absence of God, the change of nature that follows the change of the plot and the constructions of a space named Alentejo made as criticism and imagination / O presente estudo tem como objetivo apresentar uma leitura do espaço narrativo em dois romances portugueses contemporâneos, um deles é Levantado do Chão de José Saramago (2005) e o outro, Nenhum Olhar de José Luís Peixoto (2005). Em ambos os romances, o espaço analisado é o Alentejo, retratado como um local em que o limite entre vida e morte é tênue. Os escritores também se valem de tal espaço para refletirem sobre questões especificas desta região. Nas duas tramas, a saga das personagens é acompanhada por gerações em que o ciclo de dor e/ou trabalho necessita ser quebrado. Cada ação desencadeada por uma personagem, em um local específico, acarreta mudanças significativas para o espaço da trama como um todo. Para que a análise do espaço pudesse ser desenvolvida, foram utilizadas as propostas teórico-críticas relativas ao espaço pertencentes a Gaston Bachelard e Antonio Dimas, bem como as relativas à utopia e à distopia de Carlos Eduardo Ornelas Berriel, Lyman Tower Sargent, Tomas More, Ildney Cavalcanti, J. M. Sousa Nunes, e ao niilismo de Rossano Pecoraro. As concepções de utopia e distopia, entretanto, foram aplicadas basicamente à análise de Levantado do Chão e revelaram que o romance oscila entre os dois gêneros. A princípio, a obra de Saramago se alicerça no gênero distópico para posteriormente pender para o utópico. A concepção de niilismo, por sua vez, foi empregada para o estudo da obra Nenhum Olhar, pois esta se alicerça no nada absoluto, não apresentando possibilidade nenhuma de futuro para as personagens. Por fim, ambas foram comparadas e mostraram pontos em comum como a ausência de Deus, a mudança da natureza que acompanha a mudança da trama, e a construção de um espaço chamado Alentejo forjado enquanto crítica e imaginário
89

Função normativa do sistema financeiro nacional nos crimes econômicos

Giacomet Junior, Isalino Antonio 08 August 2012 (has links)
Made available in DSpace on 2016-03-15T19:33:57Z (GMT). No. of bitstreams: 1 Isalino Antonio Giacomet Junior.pdf: 1126819 bytes, checksum: 32838bbb6682054d64262f508220dd4e (MD5) Previous issue date: 2012-08-08 / Dealing effectively with economic crimes is a fundamental need for fair and balanced development of society today, given the collective nature of legal interests protected by them and the special features of economic criminality, consisting of one of the most obvious legal limit on the economic power. The success of combating such crimes within which include crimes against the financial system and crimes against the capital market - depends directly on the adoption of specific legislative techniques of criminal law. Constant innovations in the means of transmission of wealth, associated with the evolution of products and services offered to users of the financial market and the necessity to preserve the constitutional economic order, require that the economy criminal law is endowed with mechanisms that would allow flexibility and adaptation to the economic reality of any given time. Therefore, it is crucial that the expertise and the regulatory powers inherent to normative and supervisor agencies of the National Financial System emanating from within their respective regulatory administrative functions - are also translated to economic criminal law. Among the instruments of criminal regulation that allow this administrative influence, are in the characterization of blank criminal laws, the use of normative elements of the crime and objective conditions for punishment. Despite these legislative techniques cause, as a rule, the creation of open criminal types, it is emphasized that these mechanisms of penal norms do not offend the principle of legality. / O enfrentamento eficiente aos delitos econômicos representa uma necessidade fundamental para o desenvolvimento justo e equilibrado da sociedade nos dias atuais, em virtude dos bens jurídicos de índole coletiva por eles tutelados e das características especiais da criminalidade econômica, consistindo em uma das formas mais evidentes de limitação jurídica sobre o poder econômico. O sucesso do combate a tais delitos dentro dos quais se inserem os crimes contra o sistema financeiro e os crimes contra o mercado de capitais depende diretamente da adoção de técnicas legislativas diferenciadas dos tipos penais. As constantes inovações nos meios de transmissão de riquezas, aliadas à evolução dos serviços e produtos oferecidos aos usuários do mercado financeiro e à necessidade de preservação da ordem econômica constitucional, requerem que o direito penal econômico seja dotado de mecanismos que permitam sua maleabilidade e adaptação constante à realidade econômica de determinado momento. Torna-se fundamental, portanto, que os conhecimentos técnicos e os poderes normativos inerentes aos órgãos normativos e supervisores do Sistema Financeiro Nacional exarados no âmbito de suas respectivas atribuições administrativas regulatórias sejam transpostos também para a seara do direito penal econômico. Dentre os instrumentos de normatização penal que permitem essa influência administrativa, situam-se a tipificação de normas penais em branco, a utilização de elementos normativos do tipo e as condições objetivas de punibilidade. Em que pese tais técnicas legislativas ensejarem, em regra, a criação de tipos penais abertos, destaca-se que esses mecanismos de normatização penal não ofendem o princípio da legalidade.
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Systemunterstützte Umformung

Rittmeier, Sebastian 29 October 2007 (has links) (PDF)
Konsequent betriebener Leichtbau führte und führt weiterhin zu steigender Komplexität in der Blechumformung. Erkenntnisse aus Forschungsaktivitäten zur gezielten Beeinflussung, Regelung und Vollautomatisierung des Tiefziehprozesses konnten jedoch bisher nicht in Großserienpresswerke transferiert werden. Aus diesem Grund wird in dieser Arbeit ein Werkzeugkonzept vorgestellt, welches unter Berücksichtigung der relevanten Randbedingungen eine gezielte lokale Beeinflussung des Umformprozesses ermöglicht. Gleichzeitig gestattet es, mit Hilfe eines neuartigen, optischen Sensorkonzeptes die Geschwindigkeit sowie den Einlaufweg der Platine zu überwachen. Es wird eine methodische Vorgehensweise zur Herstellung von Umformwerkzeugen, auf der neuen Konzeption basierend, beschrieben. Umformsimulationen dienen dabei zur Identifikation von kritischen Bauteilen und deren neuralgischen Zonen. Eine entsprechend angepasste Konstruktion bietet Bauraum für die Implementierung von zusätzlichen Aktuatoren und einem definiert elastischen Einsatz. Abschließende FEM-Analysen mit Volumenmodellen sowie die Kalkulation der Lebensdauer bestätigen eine ausreichende Flexibilität und die erforderliche Dauerfestigkeit. Im Rahmen der experimentellen Analyse konnte eine drastische Verkürzung der Anlaufzeit durch deutlich reduzierten Tuschieraufwand aufgrund der Anpassungsfähigkeit sowie Flexibilität des definiert elastischen Werkzeugkonzeptes nachgewiesen werden. Neben diesem Potential hinsichtlich strukturierter Inbetriebnahmen ermöglicht die Konzeption eine Kompensation von Pressenunterschieden und individuellen Maschinencharakteristika (wie bspw. Stößelverkippungen) wodurch der Transfer von der Einarbeitspresse auf die Produktionsanlage wesentlich weniger Korrekturschleifen hervorruft. Außerdem werden der Qualitätsaufwand (Nachtuschieren) während der laufenden Serienproduktion, Stillstandszeiten und Ausschussquoten stark verringert. Darüber hinaus ergeben sich erweiterte Anwendungsmöglichkeiten bei der Umformung von tailored blanks und aus der Minimierung/Optimierung des Platinenzuschnittes enorme Einsparungs- und Kostenpotentiale. Abschließend werden die Vorteile eines geschlossenen Prozessregelkreises durch die Verknüpfung von Sensorik und Aktorik analysiert. Dabei bestätigt das vorgeschlagene Regelkonzept einer Prozessnachführung die Erhöhung der Prozessstabilität bei schwankenden Prozessparametern durch die gezielte, lokale Verteilung der Flächenpressung. Zuletzt diskutiert der vorliegende Beitrag Transfermöglichkeiten der Verbesserungspotentiale in kommende Serienwerkzeuge vor dem Hintergrund von Kostenrestriktionen und Minimierung des bedientechnischen sowie konstruktiven Aufwandes.

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