@periodical{OPUS4-4852,
  title     = {Schwerpunkt Synchronisation},
  volume    = {2014},
  number    = {5.2014, Heft 2},
  editor    = {Engell, Lorenz and Siegert, Bernhard},
  publisher = {Felix Meiner Verlag},
  address   = {Hamburg},
  organization    = {Internationales Kolleg f{\"u}r Kulturtechnikforschung und Medienphilosophie},
  issn      = {2366-0767},
  doi       = {10.28937/ZMK-5-2},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20240507-48527},
  pages     = {183},
  abstract  = {Nichts ist so aktuell wie die Gegenwart; gegenw{\"a}rtig sein aber heißt gleichzeitig sein mit etwas anderem, und diese Gleichzeitigkeit muss immer eigens durch geeignete Operationen der {\"U}bertragung, der {\"U}berbr{\"u}ckung, der Abstimmung und ihre Werkzeuge hergestellt werden. So schlicht erkl{\"a}rt sich die grundlegende und aktuelle Relevanz des Themas der Synchronisierung ebenso wie seine kulturtechnische und medienphilosophische Ausformung. Die aktuelle medientheoretische und medienhistorische Aufmerksamkeit f{\"u}r die Verfertigung der Gegenwart (deren wichtigste Operation diejenige der Synchronisierung ist), wie sie sich auch im Jahresthema 2012/2013 der Forschungen am Internationalen Kolleg f{\"u}r Kulturtechnikforschung und Medienphilosophie (IKKM) niedergeschlagen hat, reagiert auf eine spezifische zeitphilosophische Spannungslage, die sich im Anschluss an die strukturale und poststrukturale sowie die systemtheoretische Differenztheorie einerseits und an eher empirische, ph{\"a}nomenale, aber auch technikhistorisch und -theoretisch relevante Sachverhalte andererseits ergeben hat. Den ersten Pol dieser Spannung bildet die Dekonstruktion der Pr{\"a}senz, etwa, im Sinne Jacques Derridas, der Gleichzeitigkeit von Stimme und Ohr beim Sprechen, oder, im Sinne Deborah Eschs, der Live-{\"U}bertragung des Fernsehens. Den anderen Pol jedoch bilden die dennoch sich behauptenden ph{\"a}nomenalen und funktionalen Gleichzeitigkeitserfahrungen und -effekte. Sie umfassen etwa das Miterleben des Spielzuges im Sport, wie Hans Ulrich Gumbrecht es gefasst hat, und zahlreiche andere {\"a}sthetische, insbesondere erhabene Erfahrungen. Am anderen Ende der Skala geh{\"o}ren aber auch Prozesse wie die technische Einsteuerung und Abstimmung von Taktfrequenzen in Regelkreisen und {\"U}bertragungszusammenh{\"a}ngen zu den g{\"u}ltigen Formen effektiver Gleichzeitigkeit. Auch Verdichtungsvorg{\"a}nge wie die mehr oder weniger instantane, ereignisbezogene wie ereignisf{\"o}rmige Bildung und Aufl{\"o}sung von Publika sind derlei relevante Pr{\"a}senzeffekte. Die grundlegende Einsicht in die Gemachtheit und folglich Dekonstruierbarkeit der Gegenwart durch Synchronisierungs- und Desynchronisierungsoperationen jedenfalls widerstreitet nach medienwissenschaftlicher {\"U}berzeugung nicht ihrer Wirklichkeit im Sinne der Wirksamkeit - der lateinischen »actualitas«, als deren deutschsprachige Entsprechung die Scholastik des Mittelalters bei Meister Eckhart den Begriff der »Wirklichkeit« erst einf{\"u}hrte.},
  subject      = {Medienwissenschaft},
  language  = {de}
}
@periodical{OPUS4-4851,
  title     = {Focus Producing Places},
  volume    = {2014},
  number    = {5.2014, Heft 1},
  editor    = {Engell, Lorenz and Siegert, Bernhard},
  publisher = {Felix Meiner Verlag},
  address   = {Hamburg},
  organization    = {Internationales Kolleg f{\"u}r Kulturtechnikforschung und Medienphilosophie},
  issn      = {2366-0767},
  doi       = {10.28937/ZMK-5-1},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20240507-48519},
  pages     = {171},
  abstract  = {Producing places is a twofold topic. It can refer to places as sites that produce something, that are productive, that have operations unfold, or actions happen, or objects emerge. Or it can refer to the fabrication of places as specific entities themselves. With the extended availability and practicability of digital positioning, locating, and tracking systems, it has become evident that places are not just there, but that they are generated, that they are subject to mediatechnological operations and effects. Nonetheless, and at the same time, the aspect of places as being productive has also attracted considerable attention. Furthermore, in either perspective, a media-theoretical challenge has come up. It invests two different threads within the realm of conceptualizing not only space, but precisely place under conditions of media, both of them leading way back into the evolution of media societies and cultural technologies.},
  subject      = {Medienwissenschaft},
  language  = {de}
}
@misc{Kleiner,
  author    = {Kleiner, Florian},
  title     = {Charakterisierung des Einflusses der W{\"a}rmeleitf{\"a}higkeit von Kompositmaterialien auf die thermochemische W{\"a}rmespeicherung},
  doi       = {10.25643/bauhaus-universitaet.4496},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210921-44968},
  pages     = {86},
  abstract  = {Mit dem stetigen Steigen des Anteils an erneuerbaren Energien wird der Einsatz von Speichern immer bedeutsamer. Neben der Speicherung elektrischer Energie ist die Speicherung anfallender solarer bzw. industrieller W{\"a}rme eine wichtige Herausforderung. Aufgrund der hohen Energiespeicherdichte kommt dabei der thermochemischen W{\"a}rmespeicherung eine entscheidende Rolle zu. Eine Klasse dieser Speichermaterialien bilden Kompositmaterialien, die aus einer offenporigen Matrix und einem darin eingelagerten Salzhydrat bestehen. Ausschlaggebend f{\"u}r eine hohe Speicherdichte ist bei dieser Materialklasse der schnelle Abtransport der durch Wasserdampfsorption entstandenen W{\"a}rme. Das entscheidende Kriterium f{\"u}r eine Anwendung als Speichermaterial ist somit die W{\"a}rmeleitf{\"a}higkeit des Materials. Im Rahmen der Arbeit wurden deshalb die W{\"a}rmeleitf{\"a}higkeiten ausgew{\"a}hlter Salze (NaCl, MgSO4 und ZnSO4) mit verschiedenen Kristallwassergehalten, Tr{\"a}germaterialien wie Aktivkohle (Pellets und Pulver) und Zeolitpulver und an den daraus hergestellten Kompositmaterialien untersucht. Ziel war es außerdem Aussagen zu einer g{\"u}nstigen Materialkombination aus offenporigem Tr{\"a}germaterial und Salzhydrat sowie eines geeigneten Porenf{\"u}llgrades zu treffen und Ans{\"a}tze f{\"u}r die Modellierung der W{\"a}rmeleitf{\"a}higkeit der Komposite zu liefern.},
  subject      = {W{\"a}rmespeicher},
  language  = {de}
}
@misc{Habtemariam,
  type      = {Master Thesis},
  author    = {Habtemariam, Abinet Kifle},
  title     = {Numerical Demolition Analysis of a Slender Guyed Antenna Mast},
  doi       = {10.25643/bauhaus-universitaet.4460},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210723-44609},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {75},
  abstract  = {The main purpose of the thesis is to ensure the safe demolition of old guyed antenna masts that are located in different parts of Germany. The major problem in demolition of this masts is the falling down of the masts in unexpected direction because of buckling problem. The objective of this thesis is development of a numerical models using finite element method (FEM) and assuring a controlled collapse by coming up with different time setups for the detonation of explosives which are responsible for cutting down the cables. The result of this thesis will avoid unexpected outcomes during the demolition processes and prevent risk of collapsing of the mast over near by structures.},
  subject      = {Abbruch},
  language  = {en}
}
@article{ChenSchwingKarlovšeketal.,
  author    = {Chen, Zhen and Schwing, Moritz and Karlovšek, Jurij and Wagner, Norman and Scheuermann, Alexander},
  title     = {Broadband Dielectric Measurement Methods for Soft Geomaterials: Coaxial Transmission Line Cell and Open-Ended Coaxial Probe},
  series = {International Journal of Engineering and Technology},
  volume    = {2014},
  journal   = {International Journal of Engineering and Technology},
  number    = {volume 6, number 5},
  doi       = {10.7763/IJET.2014.V6.728},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210408-43984},
  pages     = {373 -- 380},
  abstract  = {Broadband dielectric measurement methods based on vector network analyzer coupled with coaxial transmission line cell (CC) and open-ended coaxial probe (OC) are simply reviewed, by which the dielectric behaviors in the frequency range of 1 MHz to 3 GHz of two practical geomaterials are investigated. Kaolin after modified compaction with different water contents is measured by using CC. The results are consistent with previous study on standardized compacted kaolin and suggest that the dielectric properties at frequencies below 100 MHz are not only a function of water content but also functions of other soil state parameters including dry density. The hydration process of a commercial grout is monitored in real time by using OC. It is found that the time dependent dielectric properties can accurately reveal the different stages of the hydration process. These measurement results demonstrate the practicability of the introduced methods in determining dielectric properties of soft geomaterials.},
  subject      = {Impedanzspektroskopie},
  language  = {en}
}
@misc{Kavrakov,
  type      = {Master Thesis},
  author    = {Kavrakov, Igor},
  title     = {Structural Optimization of Composite Cross-Sections and Elements using Energy Methods},
  doi       = {10.25643/bauhaus-universitaet.3959},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190815-39593},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {96},
  abstract  = {Structural optimization has gained considerable attention in the design of structural engineering structures, especially in the preliminary phase. This study introduces an unconventional approach for structural optimization by utilizing the Energy method with Integral Material Behavior (EIM), based on the Lagrange's principle of minimum potential energy. An automated two-level optimization search process is proposed, which integrates the EIM, as an alternative method for nonlinear structural analysis, and the bilevel optimization. The proposed procedure secures the equilibrium through minimizing the potential energy on one level, and on a higher level, a design objective function. For this, the most robust strategy of bilevel optimization, the nested method is used. The function of the potential energy is investigated along with its instabilities for physical nonlinear analysis through principle examples, by which the advantages and limitations using this method are reviewed. Furthermore, optimization algorithms are discussed. A numerical fully functional code is developed for nonlinear cross section, element and 2D frame analysis, utilizing different finite elements and is verified against existing EIM programs. As a proof of concept, the method is applied on selected examples using this code on cross section and element level. For the former one a comparison is made with standard procedure, by employing the equilibrium equations within the constrains. The validation of the element level was proven by a theoretical solution of an arch bridge and finally, a truss bridge is optimized. Most of the principle examples are chosen to be adequate for the everyday engineering practice, to demonstrate the effectiveness of the proposed method. This study implies that with further development, this method could become just as competitive as the conventional structural optimization techniques using the Finite Element Method.},
  subject      = {Strukturoptimierung},
  language  = {en}
}
@article{VoelkerMaempelKornadt,
  author    = {V{\"o}lker, Conrad and M{\"a}mpel, Silvio and Kornadt, Oliver},
  title     = {Measuring the human body's micro-climate using a thermal manikin},
  series = {Indoor Air},
  journal   = {Indoor Air},
  number    = {24, 6},
  doi       = {10.25643/bauhaus-universitaet.3815},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20181025-38153},
  pages     = {567 -- 579},
  abstract  = {The human body is surrounded by a micro-climate which results from its convective release of heat. In this study, the air temperature and flow velocity of this micro-climate were measured in a climate chamber at various room temperatures, using a thermal manikin simulating the heat release of the human being. Different techniques (Particle Streak Tracking, thermography, anemometry, and thermistors) were used for measurement and visualization. The manikin surface temperature was adjusted to the particular indoor climate based on simulations with a thermoregulation model (UCBerkeley Thermal Comfort Model). We found that generally, the micro-climate is thinner at the lower part of the torso, but expands going up. At the head, there is a relatively thick thermal layer, which results in an ascending plume above the head. However, the micro-climate shape strongly depends not only on the body segment, but also on boundary conditions: the higher the temperature difference between the surface temperature of the manikin and the air temperature, the faster the air flow in the micro-climate. Finally, convective heat transfer coefficients strongly increase with falling room temperature, while radiative heat transfer coefficients decrease. The type of body segment strongly influences the convective heat transfer coefficient, while only minimally influencing the radiative heat transfer coefficient.},
  subject      = {Raumklima},
  language  = {en}
}
@article{Massaretti,
  author    = {Massaretti, Pier Giorgio},
  title     = {Dagli inizi dell'urbanismo teorico alla citt{\`a} moderna. Visioni urbanistiche del totalitarismo - Italia},
  series = {Anthologie zum St{\"a}dtebau. Das Ph{\"a}nomen Großstadt und die Entstehung der Stadt der Moderne},
  journal   = {Anthologie zum St{\"a}dtebau. Das Ph{\"a}nomen Großstadt und die Entstehung der Stadt der Moderne},
  doi       = {10.25643/bauhaus-universitaet.3222},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170529-32228},
  pages     = {1 -- 45},
  abstract  = {La prima edizione di questo testo {\`e} apparsa, in tedesco, nel volume II.2.: Anthologie zum St{\"a}dtebau. Das Ph{\"a}nomen Großstadt und die Entstehung der Stadt der Moderne, a cura di Vittorio Magnago Lampugnani, Katia Frey, Eliana Perotti, con il sostegno di Departement Architektur der Eidgen{\"o}ssischen Technischen Hochschule, Z{\"u}rich (Gebr. Mann Verlag, Berlin 2014, pp. 1307-1390). Previ specifici accordi con l'editore, viene qui presentata la versione originaria, in italiano, dell'intero capitolo: Modernit{\"a}t und Emphase. St{\"a}dtebau im italienischen Faschismus, e comprendente: i) una capiente saggio introduttivo - in una versione pi{\`u} ampia ed articolata (comprensiva della "Bibliografia sistematica", di riferimento) del testo in tedesco; ii) la versione in italiano del repertorio antologico di riferimento - e comprensiva di una "Scheda introduttiva", sull'Autore-Opera, e di una selezione del testo in esame.},
  subject      = {St{\"a}dtebau},
  language  = {it}
}
@inproceedings{Massaretti,
  author    = {Massaretti, Pier Giorgio},
  title     = {La ri-fondazione della Libia balbiana (1933-1939). Il poderoso racconto fotografico dei "Ventimila"},
  series = {Citt{\`a} mediterranee in trasformazione},
  booktitle = {Citt{\`a} mediterranee in trasformazione},
  doi       = {10.25643/bauhaus-universitaet.3223},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170529-32234},
  pages     = {14},
  abstract  = {La prima edizione di questo testo {\`e} apparsa negli atti del VI Convegno Internazionale di Studi del CIRICE - Centro Interdipartimentale di Ricerca sull'Iconografia della Citt{\`a} Europea - Universit{\`a} di Napoli Federico II, (Napoli, 13-15 marzo 2014), dal titolo: Citt{\`a} mediterranee in trasformazione. Identit{\`a} e immagine del paesaggio urbano tra Sette e Novecento, a cura di A. Buccaro e C. de Seta (Collana: Polis, 6; Napoli: Edizioni Scientifiche Italiane, 2014; pp. 1216; ISBN 9788849528145), all'interno della sessione 7, Le trasformazioni del paesaggio urbano nella fotografia e nella cinematografia, coordinatori: F. Capano, M. Iuliano, pp. 1085-1098. Il Convegno, aperto a studiosi di ambito nazionale e internazionale, si poneva l'obiettivo di fare il punto sulla storiografia riguardante la citt{\`a} mediterranea in et{\`a} contemporanea, con particolare riferimento alla sua identit{\`a}, struttura e immagine, dall'inizio dell'industrializzazione all'et{\`a} post-illuminista e borghese, fino ai temi inerenti l'evoluzione/involuzione del territorio e del paesaggio post-industriale, nonch{\´e} lo sviluppo del modello turistico tra Otto e Novecento.},
  subject      = {St{\"a}dtebau},
  language  = {it}
}
@article{ZhuangHuangLiangetal.,
  author    = {Zhuang, Xiaoying and Huang, Runqiu and Liang, Chao and Rabczuk, Timon},
  title     = {A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage},
  series = {Mathematical Problems in Engineering},
  journal   = {Mathematical Problems in Engineering},
  doi       = {10.1155/2014/179169},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170428-31726},
  abstract  = {Renewable energy resources such as wind and solar are intermittent, which causes instability when being connected to utility grid of electricity. Compressed air energy storage (CAES) provides an economic and technical viable solution to this problem by utilizing subsurface rock cavern to store the electricity generated by renewable energy in the form of compressed air. Though CAES has been used for over three decades, it is only restricted to salt rock or aquifers for air tightness reason. In this paper, the technical feasibility of utilizing hard rock for CAES is investigated by using a coupled thermo-hydro-mechanical (THM) modelling of nonisothermal gas flow. Governing equations are derived from the rules of energy balance, mass balance, and static equilibrium. Cyclic volumetric mass source and heat source models are applied to simulate the gas injection and production. Evaluation is carried out for intact rock and rock with discrete crack, respectively. In both cases, the heat and pressure losses using air mass control and supplementary air injection are compared.},
  subject      = {Energiespeicherung},
  language  = {en}
}
@article{VoelskeGollubHagenetal.,
  author    = {V{\"o}lske, Michael and Gollub, Tim and Hagen, Matthias and Stein, Benno},
  title     = {A keyquery-based classification system for CORE},
  series = {D-Lib Magazine},
  journal   = {D-Lib Magazine},
  doi       = {10.1045/november14-voelske},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170426-31662},
  abstract  = {We apply keyquery-based taxonomy composition to compute a classification system for the CORE dataset, a shared crawl of about 850,000 scientific papers. Keyquery-based taxonomy composition can be understood as a two-phase hierarchical document clustering technique that utilizes search queries as cluster labels: In a first phase, the document collection is indexed by a reference search engine, and the documents are tagged with the search queries they are relevant—for their so-called keyqueries. In a second phase, a hierarchical clustering is formed from the keyqueries within an iterative process. We use the explicit topic model ESA as document retrieval model in order to index the CORE dataset in the reference search engine. Under the ESA retrieval model, documents are represented as vectors of similarities to Wikipedia articles; a methodology proven to be advantageous for text categorization tasks. Our paper presents the generated taxonomy and reports on quantitative properties such as document coverage and processing requirements.},
  subject      = {Massendaten},
  language  = {en}
}
@article{NagelSimonKuemmeletal.,
  author    = {Nagel, Falk and Simon, Flaviu and K{\"u}mmel, Benjamin and Bergmann, Jean Pierre and Hildebrand, J{\"o}rg},
  title     = {Optimization Strategies for Laser Welding High Alloy Steel Sheets},
  series = {Physics Procedia},
  journal   = {Physics Procedia},
  doi       = {10.1016/j.phpro.2014.08.040},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170425-31554},
  pages     = {1242 -- 1251},
  abstract  = {A known phenomenon during laser welding of thin sheets is the deformation caused by thermally induced stresses. This deformation can result in a change of the gap width between the welded parts, which leads to an unstable welding process. Inducing displacements by using a second heat source will compensate for the change in gap width, hence optimizing the welding process. The base material is 1 mm thick austenitic stainless steel 1.4301, which is welded by a CO2 laser. The second heat source is a diode laser. The gap between the welded parts was set between 0.05 mm and 0.1 mm. The influence of the second heat source on the welding process and the welding result is described. The usage of a second heat source allows a higher gap width to be set prior to the welding process. The results of the numerical simulation were found to be corresponding to those of the experiments.},
  subject      = {Edelstahl},
  language  = {en}
}
@article{MotraHildebrandDimmigOsburg,
  author    = {Motra, Hem Bahadur and Hildebrand, J{\"o}rg and Dimmig-Osburg, Andrea},
  title     = {Assessment of strain measurement techniques to characterise mechanical properties of structural steel},
  series = {Engineering Science and Technology, an International Journal},
  journal   = {Engineering Science and Technology, an International Journal},
  doi       = {10.1016/j.jestch.2014.07.006},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170425-31540},
  pages     = {260 -- 269},
  abstract  = {Strain measurement is important in mechanical testing. A wide variety of techniques exists for measuring strain in the tensile test; namely the strain gauge, extensometer, stress and strain determined by machine crosshead motion, Geometric Moire technique, optical strain measurement techniques and others. Each technique has its own advantages and disadvantages. The purpose of this study is to quantitatively compare the strain measurement techniques. To carry out the tensile test experiments for S 235, sixty samples were cut from the web of the I-profile in longitudinal and transverse directions in four different dimensions. The geometry of samples are analysed by 3D scanner and vernier caliper. In addition, the strain values were determined by using strain gauge, extensometer and machine crosshead motion. Three techniques of strain measurement are compared in quantitative manner based on the calculation of mechanical properties (modulus of elasticity, yield strength, tensile strength, percentage elongation at maximum force) of structural steel. A statistical information was used for evaluating the results. It is seen that the extensometer and strain gauge provided reliable data, however the extensometer offers several advantages over the strain gauge and crosshead motion for testing structural steel in tension. Furthermore, estimation of measurement uncertainty is presented for the basic material parameters extracted through strain measurement.},
  subject      = {Baustahl},
  language  = {en}
}
@article{MasoodKharalNasir,
  author    = {Masood, R. and Kharal, M. K. N. and Nasir, A.R.},
  title     = {Is BIM Adoption Advantageous for Construction Industry of Pakistan?},
  series = {Procedia Engineering},
  journal   = {Procedia Engineering},
  doi       = {10.1016/j.proeng.2014.07.021},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170425-31509},
  pages     = {229 -- 238},
  abstract  = {Lack of Information technology applications on construction projects lead to complex flow of data during project life cycle. Building Information Modeling (BIM) has gained attention in the Architectural, Engineering and Construction (AEC) industry, envisage the use of virtual n-dimensional (n-D) models to identify potential conflicts in design, construction or operational of any facility. A questionnaire has been designed to investigate perceptions regarding BIM advantages. Around 102 valid responses received from diversified stakeholders. Results showed very low BIM adoption with low level of 'Buzz'. BIM is a faster and more effective method for designing and construction management, it improves quality of the design and construction and reduces rework during construction; which came out as the top thee advantages according to the perception of AEC professionals of Pakistan.BIM has least impact on reduction of cost, time and human resources. This research is a bench mark study to understand adoption and advantageous of BIM in Pakistan Construction Industry.},
  subject      = {Building Information Modeling},
  language  = {en}
}
@article{LinnowNiermannBonatzetal.,
  author    = {Linnow, Kirsten and Niermann, Michael and Bonatz, Dennis and Posern, Konrad and Steiger, Michael},
  title     = {Experimental Studies of the Mechanism and Kinetics of Hydration Reactions},
  series = {Energy Procedia},
  journal   = {Energy Procedia},
  doi       = {10.1016/j.egypro.2014.02.046},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170425-31484},
  pages     = {394 -- 404},
  abstract  = {The mechanism and the kinetics of hydration reactions are important for the application of a salt hydrate as a thermochemical heat storage material. MgSO4·H2O and Na2SO4 were chosen in this study because they are both promising candidates for such an application. Considering that the hydration of these salts yields MgSO4·7H2O and Na2SO4·10H2O as the reaction products, the maximum overall heat effect can be calculated from the heat of condensation of water vapor (44 kJ mol-1) and the heats of hydration of 75 kJ·mol-1 (for MgSO4·H2O) and 81 kJ mol-1 (for Na2SO4). Based on the densities of the two hydrated phases, this results in the very high theoretical energy densities of 2.3 GJ·m-3 and 2.4 GJ·m-3, respectively, for MgSO4·7H2O and Na2SO4·10H2O. Not only the energy density is important for the dimensioning of a storage system, but also the kinetics of hydration reactions play a major role for the application as storage material. In the present study, hydration reactions under varying climatic conditions were investigated by using water vapor sorption measurements and in-situ Raman microscopy. Using the phase diagrams, it can be clearly shown that the mechanism and the kinetics depend on the climatic conditions. Below the deliquescence humidity of the lower hydrated phase the hydration proceeds as solid state reaction, whilst above the deliquescence humidity a through solution mechanism takes place.},
  subject      = {W{\"a}rmespeicherung},
  language  = {en}
}
@article{LeNguyenLudwig,
  author    = {Le, Ha Thanh and Nguyen, Sang Thanh and Ludwig, Horst-Michael},
  title     = {A Study on High Performance Fine-Grained Concrete Containing Rice Husk Ash},
  series = {International Journal of Concrete Structures and Materials},
  journal   = {International Journal of Concrete Structures and Materials},
  doi       = {10.1007/s40069-014-0078-z},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170425-31477},
  pages     = {301 -- 307},
  abstract  = {Rice husk ash (RHA) is classified as a highly reactive pozzolan. It has a very high silica content similar to that of silica fume (SF). Using less-expensive and locally available RHA as a mineral admixture in concrete brings ample benefits to the costs, the technical properties of concrete as well as to the environment. An experimental study of the effect of RHA blending on workability, strength and durability of high performance fine-grained concrete (HPFGC) is presented. The results show that the addition of RHA to HPFGC improved significantly compressive strength, splitting tensile strength and chloride penetration resistance. Interestingly, the ratio of compressive strength to splitting tensile strength of HPFGC was lower than that of ordinary concrete, especially for the concrete made with 20 \% RHA. Compressive strength and splitting tensile strength of HPFGC containing RHA was similar and slightly higher, respectively, than for HPFGC containing SF. Chloride penetration resistance of HPFGC containing 10-15 \% RHA was comparable with that of HPFGC containing 10 \% SF.},
  subject      = {Hochfester Beton},
  language  = {en}
}
@article{AtaollahiOshkourTalebiSeyedShirazietal.,
  author    = {Ataollahi Oshkour, Azim and Talebi, Hossein and Seyed Shirazi, Seyed Farid and Bayat, Mehdi and Yau, Yat Huang and Tarlochan, Faris and Abu Osman, Noor Azuan},
  title     = {Comparison of various functionally graded femoral prostheses by finite element analysis},
  series = {Scientific World Journal},
  journal   = {Scientific World Journal},
  doi       = {10.1155/2014/807621},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170413-31194},
  abstract  = {This study is focused on finite element analysis of a model comprising femur into which a femoral component of a total hip replacement was implanted. The considered prosthesis is fabricated from a functionally graded material (FGM) comprising a layer of a titanium alloy bonded to a layer of hydroxyapatite. The elastic modulus of the FGM was adjusted in the radial, longitudinal, and longitudinal-radial directions by altering the volume fraction gradient exponent. Four cases were studied, involving two different methods of anchoring the prosthesis to the spongy bone and two cases of applied loading. The results revealed that the FG prostheses provoked more SED to the bone. The FG prostheses carried less stress, while more stress was induced to the bone and cement. Meanwhile, less shear interface stress was stimulated to the prosthesis-bone interface in the noncemented FG prostheses. The cement-bone interface carried more stress compared to the prosthesis-cement interface. Stair climbing induced more harmful effects to the implanted femur components compared to the normal walking by causing more stress. Therefore, stress shielding, developed stresses, and interface stresses in the THR components could be adjusted through the controlling stiffness of the FG prosthesis by managing volume fraction gradient exponent.},
  subject      = {Finite-Elemente-Methode},
  language  = {en}
}
@article{AmaniSaboorBagherzadehRabczuk,
  author    = {Amani, Jafar and Saboor Bagherzadeh, Amir and Rabczuk, Timon},
  title     = {Error estimate and adaptive refinement in mixed discrete least squares meshless method},
  series = {Mathematical Problems in Engineering},
  journal   = {Mathematical Problems in Engineering},
  doi       = {10.1155/2014/721240},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170413-31181},
  abstract  = {The node moving and multistage node enrichment adaptive refinement procedures are extended in mixed discrete least squares meshless (MDLSM) method for efficient analysis of elasticity problems. In the formulation of MDLSM method, mixed formulation is accepted to avoid second-order differentiation of shape functions and to obtain displacements and stresses simultaneously. In the refinement procedures, a robust error estimator based on the value of the least square residuals functional of the governing differential equations and its boundaries at nodal points is used which is inherently available from the MDLSM formulation and can efficiently identify the zones with higher numerical errors. The results are compared with the refinement procedures in the irreducible formulation of discrete least squares meshless (DLSM) method and show the accuracy and efficiency of the proposed procedures. Also, the comparison of the error norms and convergence rate show the fidelity of the proposed adaptive refinement procedures in the MDLSM method.},
  subject      = {Elastizit{\"a}t},
  language  = {en}
}
@article{AdamatzkySchubert,
  author    = {Adamatzky, Andrew and Schubert, Theresa},
  title     = {Slime mold microfluidic logical gates},
  series = {Materials Today},
  journal   = {Materials Today},
  doi       = {10.1016/j.mattod.2014.01.018},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170413-31168},
  pages     = {86 -- 91},
  abstract  = {We demonstrate how logical operations can be implemented in ensembles of protoplasmic tubes of acellular slime mold Physarum polycephalum. The tactile response of the protoplasmic tubes is used to actuate analogs of two- and four-input logical gates and memory devices. The slime mold tube logical gates display results of logical operations by blocking flow in mechanically stimulated tube fragments and redirecting the flow to output tube fragments. We demonstrate how XOR and NOR gates are constructed. We also exemplify circuits of hybrid gates and a memory device. The slime mold based gates are non-electronic, simple and inexpensive, and several gates can be realized simultaneously at sites where protoplasmic tubes merge.},
  subject      = {Physarum polycephalum},
  language  = {en}
}
@techreport{KoenigTapiasSchmitt,
  author    = {K{\"o}nig, Reinhard and Tapias, Estefania and Schmitt, Gerhard},
  title     = {New Methods in Urban Analysis and Simulation: Documentation of the teaching results from the spring semester 2014},
  doi       = {10.25643/bauhaus-universitaet.2515},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20160121-25154},
  pages     = {62},
  abstract  = {Documentation of the teaching results from the spring semester 2014 at ETH Zurich},
  subject      = {St{\"a}dtebau},
  language  = {en}
}