207 research outputs found
Archaeological Investigations on Easter Island (Review)
No full textArchaeological Investigations on Easter Island. Maunga Tan: an Upland Agricultural Complex by Christopher M. Stevenson
Easter Island Foundation 1997 $26
Review by Paul G. Bahn </p
The interface shear anchorage of the U-Bahn weight-saving floor system
No full textThe U-Bahn floor system is an innovative weight-saving floor system that consists of a prefabricated floor and a structural screed. To connect these two layers, only lattice girders are applied. This means that all stresses in the complete floor system must be taken up by these lattice girders. The U-Bahn floor system is built without propping, a feature that speeds up the building process enormously. Therefore, all building phase depend on each other and together determine the capacity in the use phase. However, to correctly determine the capacity in the use phase, all stresses need to be determined per building phase. The capacity of the correctly anchored lattice girders must after all withstand these stresses. The aim of this research is to find out whether the lattice girders can resist the shear stresses of the U-Bahn floor system. The following research question has been drawn up: In which way does the design of the interface shear of the U-Bahn weight-saving floor system sufficiently anchorage the structural screed? To answer this question, extensive research was first conducted into the various building phases of the U-Bahn floor system. The stresses and forces for each phase individually were calculated. Subsequently, it is examined which type of lattice girder is usable in the U-Bahn floor system and how this type is incorporated in the floor. The stresses that these lattice girders must resist and transfer, have been calculated by means of two methods, an analytical calculation and finite element analysis calculation. As there is no product standard for the U-Bahn floor system yet, the calculations are based on the Eurocode and the floor plank standard. The results of the analytical calculation regarding the anchoring of the lattice girder showed the following : (i) the connection reinforcement, according to the floor plank standard, is sufficient, (ii) the shear force, according to the Eurocode, is not sufficient and, (iii) the detail requirements, as described in the Eurocode, have not been met. The results of the analytical calculation regarding the interface shear capacity of the total floor system shows that the resistance of the lattice girder in the U-Bahn floor system is lower than the acting stresses in the use phase, which results in a unity check of 1.40, which exceeds the maximum unity check of 1.0 as given in the Eurocode. To verify the analytical calculation and to determine to what extent the anchoring of the lattice is insufficient, the floor has been modelled in the finite element program, Diana. Due to the complexity of the program and the calculation, it has been decided to use a linear analysis for the calculation of the different phases of the U-Bahn floor system. Due to this, no result of the crack width and redistribution of the forces in the floor can be given. Nevertheless, the results do show that the concrete cannot take up the calculated stresses, which suggests that the floor will crack. Future research can further investigate the limits of the U-Bahn floor system by means of a non-linear calculation in a finite element analysis. In this non-linear calculation, the factors, deflections, creep and shrinkage must also be included, since this research has shown that these are co-determining factors for the interface shear capacity of the floor. These results will then have to be verified with destructive tests. Finally, if the results are confirmed, they can be converted into a rule-of-thumb, in order to facilitate tenders in the future.Civil Engineering | Structural Engineerin
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Lullaby
No full textPerformance at the B. Iden Payne Theatre, UT-Austin. Streams (interactive character by Tomie Hahn/Curtis Bahn): There is a dream state where memories become intertwined with the sensuality of the present. In recollecting streams, memories of places, bodies of water and land, technology, the flow of information, transmission, and liquid states arise. These memories, drawn from the body, awaken as gesture and sound. Through technology, this piece toys with the ephemeral quality of sound and the physical memory of time, sonic space, and sensory experience. Pikapika (interactive character by Tomie Hahn/Curtis Bahn): Meet Pikapika, a character influenced by anime and manga, Japanese pop animation and comics. Pikapika embodies movements from bunraku (puppet theater), a movement vocabulary Tomie Hahn studied while learning nohn buyo (Japanese traditional dance) pieces derived from the puppet theater. The concept of the sonic punctuation of Pikapika's movements is drawn directly from the bunraku musical tradition. However, the actual sounds are not drawn from bunraku musical vocabulary. Pikapika dons a new wireless interactive dance system (SSpeaPer, Sensor-Speaker-Performer) created by Curtis Bahn. SSpeaPer naturally locates and spatializes the electronic sounds to emanate from the speakers mounted on her body. As Pikapika moves, her gestural information is sent by radio to an interactive computer music system. The sounds are then broadcast back to her body, creating a new sort of audio "alias" for her character; a sonic mask. Choreography: Laura Cannon (Transmigration of Angels); Theresa Hardy (...the scenery was Parting); Yacov Sharir (Tassos, Lullaby); Pika-Pika (Tomie Hahn). Dance Company: Sharir+Bustamante Danceworks, with guest artists Curtis Bahn and Tomie Hahn and Spurse. Dancers: Laura Cannon (Transmigration of Angels); Kevin Briggs, Laura Cannon, Alby Roblejo, Andee Scott (...the scenery was Parting); Kevin Briggs, Laura Cannon, Theresa Hardy, Alby Roblejo, Andee Scott (Tassos); Andee Scott, Yacov Sharir (Lullaby) Lighting: Amarante Lucero. Costumes: Amy Burrell; Amy Burrell with Laura Cannon (Transmigration of Angels). Images: Laura Cannon (Transmigration of Angels). Composer: Larisa Montanaro (Transmigration of Angels, Lullaby); Michael Nymen with voice by Christopher Middleton (...the scenery was Parting); Graham Reynolds (Tassos). Vocalist: Larisa Montanaro (Lullaby). Text: Excerpts from "The Fourth Elegy" by Rainer Maria Rilke (...the scenery was Parting). Composition/Interface Design: Curtis Bahn (Pika-Pika).Performance at the B. Iden Payne Theatre, UT-Austin.Theatre and Danc
Die Bahn im Wirtschaftswunder. Deutsche Bundesbahn und Verkehrspolitik in der Nachkriegsgesellschaft
No full textKopper C. Die Bahn im Wirtschaftswunder. Deutsche Bundesbahn und Verkehrspolitik in der Nachkriegsgesellschaft. Beiträge zur historischen Verkehrsforschung. Vol 9. Frankfurt am Main: Campus Verlag; 2007.Zugl.: Bielefeld, Univ., Habil.-Schr., 200
Review: Petra Grell (2006). Forschende Lernwerkstatt. Eine qualitative Untersuchung zu Lernwiderständen in der Weiterbildung
No full textPetra GRELL beschreibt ein gelungenes Beispiel einer partizipativen, problemorientierten qualitativen Sozialforschung, das sich mit dem in der Weiterbildung häufig anzutreffenden Problem von Lernwiderständen bei den Lehrgangsteilnehmenden auseinandersetzt. Um die verschiedenen Facetten und die Motivation hinter diesem Verhalten zu analysieren, greift die Autorin auf verschiedene qualitative Methoden zurück und integriert und reflektiert erfolgreich die Verwendung von bildgestützten Verfahren. Die Arbeit ist daher sowohl vom thematischen Fokus als auch von der methodischen Reflexion und Diskussion her sehr empfehlenswert.Petra GRELL describes an example of a successful participatory, problem-oriented qualitative social research project. The project dealt with resistance to learning in further education, a problem which is frequently observed. To show the different facets and the motivation behind this behaviour, the author uses a mixture of qualitative methods, and integrates and reflects on the successful use of image processes. The work is highly recommended both for its thematic focus and for the methodological reflection and discussion it contains.Petra GRELL describe el ejemplo de un exitoso proyecto de investigación cualitativa orientado al problema y participativo. El proyecto trata sobre la resistencia al aprendizaje en la educación superior, que es un problema observado frecuentemente. Para mostrar las diferentes facetas y la motivación detrás de esta conducta, el autor usa una mezcla de métodos cualitativos, integra y reflexiona acerca del exitoso uso de procesos de imagen. El trabajo es altamente recomendado tanto por su foco temático como por la reflexión metodológica y discusión que contiene
The centrality of 'between' in intellectual entrepreneurship
No full textA great deal of intellectual entrepreneurship happens between institutions. Between institutions in the dual sense of the term: institutions as organizations and institutions as conventions. Ideas and the energy to take them forward are often born when people from different organizations come together, ideas that might not fit within one institution alone. And the introduction of new ideas often involves pushing institutions as conventions aside, creating new space BETWEEN existing institutions for the different idea to emerge. The article explores the example of a business- and-research venture, CHOICE mobilitätsproviding GmbH, to illustrate the importance of multiple types of BETWEEN and their significance for organizational learning. -- In der modernen Wirtschaft und Gesellschaft ist Wissen die wichtigste erneuerbare Ressource. Welche Rolle spielen Institutionen bei der Generierung von Wissen und dessen Umsetzung in Innovationen? Findet wissensbasiertes unternehmerisches Denken und Handeln innerhalb von Institutionen oder eher außerhalb von Institutionen statt? In diesem Beitrag wird die Bedeutung von Räumen und Zeiten zwischen Institutionen hervorgehoben und zwar im doppelten Sinn: Institutionen als Organisationen und Institutionen als Konventionen. Anhand des Beispiels der CHOICE mobilitätsproviding GmbH, einem Unternehmen zwischen Wirtschaft und Wissenschaft, werden einige Zwischen-Institutionen dargestellt und ihre Bedeutung für das Organisationslernen erläutert.
Reseña: Petra Grell (2006). Forschende Lernwerkstatt [Un taller de investigación acerca del aprendizaje. Una investigación cualitativa sobre la resistencia al aprendizaje en la educación superior]
No full textPetra GRELL beschreibt ein gelungenes Beispiel einer partizipativen, problemorientierten qualitativen Sozialforschung, das sich mit dem in der Weiterbildung häufig anzutreffenden Problem von Lernwiderständen bei den Lehrgangsteilnehmenden auseinandersetzt. Um die verschiedenen Facetten und die Motivation hinter diesem Verhalten zu analysieren, greift die Autorin auf verschiedene qualitative Methoden zurück und integriert und reflektiert erfolgreich die Verwendung von bildgestützten Verfahren. Die Arbeit ist daher sowohl vom thematischen Fokus als auch von der methodischen Reflexion und Diskussion her sehr empfehlenswert.
URN: urn:nbn:de:0114-fqs0902242Petra GRELL describes an example of a successful participatory, problem-oriented qualitative social research project. The project dealt with resistance to learning in further education, a problem which is frequently observed. To show the different facets and the motivation behind this behaviour, the author uses a mixture of qualitative methods, and integrates and reflects on the successful use of image processes. The work is highly recommended both for its thematic focus and for the methodological reflection and discussion it contains.
URN: urn:nbn:de:0114-fqs0902242Petra GRELL describe el ejemplo de un exitoso proyecto de investigación cualitativa orientado al problema y participativo. El proyecto trata sobre la resistencia al aprendizaje en la educación superior, que es un problema observado frecuentemente. Para mostrar las diferentes facetas y la motivación detrás de esta conducta, el autor usa una mezcla de métodos cualitativos, integra y reflexiona acerca del exitoso uso de procesos de imagen. El trabajo es altamente recomendado tanto por su foco temático como por la reflexión metodológica y discusión que contiene.
URN: urn:nbn:de:0114-fqs090224
Recommended from our members
Lullaby
No full textStreams (interactive character by Tomie Hahn/Curtis Bahn): There is a dream state where memories become intertwined with the sensuality of the present. In recollecting streams, memories of places, bodies of water and land, technology, the flow of information, transmission, and liquid states arise. These memories, drawn from the body, awaken as gesture and sound. Through technology, this piece toys with the ephemeral quality of sound and the physical memory of time, sonic space, and sensory experience. Pikapika (interactive character by Tomie Hahn/Curtis Bahn): Meet Pikapika, a character influenced by anime and manga, Japanese pop animation and comics. Pikapika embodies movements from bunraku (puppet theater), a movement vocabulary Tomie Hahn studied while learning nohn buyo (Japanese traditional dance) pieces derived from the puppet theater. The concept of the sonic punctuation of Pikapika's movements is drawn directly from the bunraku musical tradition. However, the actual sounds are not drawn from bunraku musical vocabulary. Pikapika dons a new wireless interactive dance system (SSpeaPer, Sensor-Speaker-Performer) created by Curtis Bahn. SSpeaPer naturally locates and spatializes the electronic sounds to emanate from the speakers mounted on her body. As Pikapika moves, her gestural information is sent by radio to an interactive computer music system. The sounds are then broadcast back to her body, creating a new sort of audio "alias" for her character; a sonic mask. Choreography: Laura Cannon (Transmigration of Angels); Theresa Hardy (...the scenery was Parting); Yacov Sharir (Tassos, Lullaby); Pika-Pika (Tomie Hahn). Dance Company: Sharir+Bustamante Danceworks, with guest artists Curtis Bahn and Tomie Hahn and Spurse. Dancers: Laura Cannon (Transmigration of Angels); Kevin Briggs, Laura Cannon, Alby Roblejo, Andee Scott (...the scenery was Parting); Kevin Briggs, Laura Cannon, Theresa Hardy, Alby Roblejo, Andee Scott (Tassos); Andee Scott, Yacov Sharir (Lullaby). Lighting: Amarante Lucero. Costumes: Amy Burrell; Amy Burrell with Laura Cannon (Transmigration of Angels). Images: Laura Cannon (Transmigration of Angels). Composer: Larisa Montanaro (Transmigration of Angels, Lullaby); Michael Nymen with voice by Christopher Middleton (...the scenery was Parting); Graham Reynolds (Tassos). Vocalist: Larisa Montanaro (Lullaby). Text: Excerpts from "The Fourth Elegy" by Rainer Maria Rilke (...the scenery was Parting). Composition/Interface Design: Curtis Bahn (Pika-Pika).Performance at the B. Iden Payne Theatre, UT-Austin.Theatre and Danc
Easter Island Archaeology: Research on Early Rapanui Culture (Review)
No full textEaster Island Archaeology: Research on Early Rapanui Culture
Christopher M. Stevenson and William S. Ayres, eds.
Easter Island Foundation, 2000 $25
Review by Paul G. Balm</p
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