@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{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}
}
@misc{GarischKutznerOehleretal.,
  author    = {Garisch, Mathias and Kutzner, Eva and Oehler, Vanessa and Patzer, Nicole and Schmeing, Carolin},
  title     = {Analyse von Terminpl{\"a}nen},
  doi       = {10.25643/bauhaus-universitaet.2139},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20140317-21392},
  pages     = {61},
  abstract  = {Das Bachelorprojekt „Analyse von Terminpl{\"a}nen" besch{\"a}ftigt sich mit der Analyse der Abh{\"a}ngigkeiten zwischen den unterschiedlichen Vorg{\"a}ngen des Bauablaufs. Die Problematik in der Terminplanerstellung liegt darin, dass ein Terminplan nicht alle Hintergrundinformationen abbildet und es daher zu Projektverz{\"o}gerungen und Absprachefehlern kommen kann. Dieses Bachelorprojekt macht Gebrauch von bereits aufbereiteten Informationen zur genannten Problematik in Form eines vorangegangen Bachelorprojekts und eines Masterprojekts, sowie einer Umfrage des Instituts f{\"u}r Bauwirtschaft der Universit{\"a}t Kassel. In diesem Projekt werden 50 neue und 100 bereits existierende Terminpl{\"a}ne von diversen Unternehmen aus ganz Deutschland analysiert und ausgewertet. Die Analyse der Terminpl{\"a}ne basiert auf gef{\"u}hrten Experteninterviews. Das Interview ber{\"u}cksichtigt Faktoren wie zum Beispiel Darstellungsformen, Detaillierungsgrade, Abh{\"a}ngigkeiten, Vorgangsdauern oder Planungsgrundlagen. Durch die Befragung von m{\"o}glichst vielen Firmen konnte festgestellt werden, dass jeder Terminplanentwickler eine Vorgehensweise entwickelt, nach welcher er arbeitet. Außerdem ist in den Gespr{\"a}chen deutlich geworden, dass das Theorie- Praxis-Gef{\"a}lle sehr groß ist. Das heißt, dass theoretische Modelle aus der Ausbildung an beispielsweise Hochschulen, in der Praxis heutzutage wenig angewandt werden. Nach der Analyse der Terminpl{\"a}ne und Auswertung der Interviews, werden die Daten in eine vom vorangehenden Masterprojekt erstellte Excel-Tabelle eingepflegt. Die vorhandenen Informationen werden dann anhand verschiedenster Diagramme verglichen und ausgewertet.},
  subject      = {Analyse},
  language  = {de}
}
@misc{Udrea,
  type      = {Master Thesis},
  author    = {Udrea, Mihai-Andrei},
  title     = {Assessment of Data from Dynamic Bridge Monitoring},
  doi       = {10.25643/bauhaus-universitaet.2174},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20140429-21742},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {The focus of the thesis is to process measurements acquired from a continuous monitoring system at a railway bridge. Temperature, strain and ambient vibration records are analysed and two main directions of investigation are pursued. The first and the most demanding task is to develop processing routines able to extract modal parameters from ambient vibration measurements. For this purpose, reliable experimental models are achieved on the basis of a stochastic system identification(SSI) procedure. A fully automated algorithm based on a three-stage clustering is implemented to perform a modal parameter estimation for every single measurement. After selecting a baseline of modal parameters, the evolution of eigenfrequencies is studied and correlated to environmental and operational factors. The second aspect deals with the structural response to passing trains. Corresponding triggered records of strain and temperature are processed and their assessment is accomplished using the average strains induced by each train as the reference parameter. Three influences due to speed, temperature and loads are distinguished and treated individually. An attempt to estimate the maximum response variation due to each factor is also carried out.},
  subject      = {Messtechnik},
  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}
}
@phdthesis{Dang,
  author    = {Dang, Trang},
  title     = {Automated Detailing of 4D Schedules},
  doi       = {10.25643/bauhaus-universitaet.2310},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20141006-23103},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {120},
  abstract  = {The increasing success of BIM (Building Information Model) and the emergence of its implementation in 3D construction models have paved a way for improving scheduling process. The recent research on application of BIM in scheduling has focused on quantity take-off, duration estimation for individual trades, schedule visualization, and clash detection. Several experiments indicated that the lack of detailed planning causes about 30\% non-productive time and stacking of trades. However, detailed planning still has not been implemented in practice despite receiving a lot of interest from researchers. The reason is associated with the huge amount and complexity of input data. In order to create a detailed planning, it is time consuming to manually decompose activities, collect and calculate the detailed information in relevant. Moreover, the coordination of detailed activities requires much effort for dealing with their complex constraints. This dissertation aims to support the generation of detailed schedules from a rough schedule. It proposes a model for automated detailing of 4D schedules by integrating BIM, simulation and Pareto-based optimization.},
  subject      = {Simulation},
  language  = {en}
}
@phdthesis{Wellnitz,
  author    = {Wellnitz, Felix},
  title     = {BAUKLIMATISCHE ERT{\"U}CHTIGUNG UND NACHHALTIGE INSTANDSETZUNG DENKMALGESCH{\"U}TZTER VERWALTUNGSBAUTEN DER 1950er JAHRE AM BEISPIEL DER EHEMALIGEN BAYERISCHEN LANDESVERTRETUNG VON SEP RUF IN BONN},
  doi       = {10.25643/bauhaus-universitaet.2303},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20140919-23031},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {172},
  abstract  = {Viele Baudenkmale sind dem Konflikt aus baulichem Instandsetzungsbedarf f{\"u}r eine zeitgem{\"a}ße Nutzung und einer sich m{\"o}glicherweise daraus ergebenden Gef{\"a}hrdung der Denkmalsubstanz ausgesetzt. Gr{\"u}nde sind steigende Energiekosten f{\"u}r den Geb{\"a}udebetrieb, zeitgem{\"a}ße Anforderungen an Behaglichkeit und Arbeitsschutz, sowie die Vermeidung von Sch{\"a}den an der Substanz aufgrund baulicher M{\"a}ngel des konstruktiven W{\"a}rme- und Feuchteschutzes. Gleichzeitig gilt f{\"u}r viele Bauten aber auch die Notwendigkeit regelm{\"a}ßiger Nutzung und Bewirtschaftung, um den Erhalt {\"u}berhaupt zu sichern. Die energetische Ert{\"u}chtigung von Baudenkmalen scheitert in diesem Spannungsfeld oft am unl{\"o}sbaren Konflikt zwischen dem Erhalt der bauzeitlichen Substanz auf der einen und der notwendigen energetischen Optimierung der Geb{\"a}udeh{\"u}lle auf der anderen Seite. Zielsetzung dieser Fallstudie ist die beispielhafte Entwicklung einer bauklimatischen und denkmalgerechten Ert{\"u}chtigungsstrategie am Beispiel eines Verwaltungsgeb{\"a}udes der Nachkriegsmoderne als Beitrag zur L{\"o}sung dieses Konfliktes.},
  subject      = {Denkmalpflege},
  language  = {de}
}
@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}
}
@phdthesis{Wiedemeyer,
  author    = {Wiedemeyer, Nina},
  title     = {Buchfalten: Material Technik Gef{\"u}ge der K{\"u}nstlerb{\"u}cher},
  doi       = {10.25643/bauhaus-universitaet.2333},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20141210-23337},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {215},
  abstract  = {B{\"u}cher werden nicht erst seit ihrer industriellen Produktion aus gefalzten Papierbogen zusammengesetzt - schon mittelalterliche Codices wurden aus gefalteten Pergamenth{\"a}uten konstruiert. Fokus dieser Studie {\"u}ber das Medium Buch ist daher die Kulturtechnik der Faltung. Anders als in der philosophischen Auseinandersetzung mit dem Begriff der Falte, ist die Buchfalte keine anti-lineare Figur, sondern ein operationales Falzscharnier, welches Anordnungen im Buchraum bestimmt und Ornamente hervorbringt. Mediengeschichtliche Fragestellungen sind auf Analysen von Buchmaterial und K{\"u}nstlerb{\"u}chern vom 19. Jahrhundert bis zur Gegenwart basiert. Mit den B{\"u}chern u.a. von Christian Boltanski, Hanne Darboven und Hans-Peter Feldmann werden Erkenntnisse {\"u}ber buchgeschichtliche Zusammenh{\"a}nge gewonnen und das K{\"u}nstlerbuch in eine Geschichte des Mediums Buch eingestellt.},
  subject      = {Buch; Buchkunst; Falte; Ornament; Papier},
  language  = {de}
}