@article{MosaviShamshirbandEsmaeilbeikietal., author = {Mosavi, Amir and Shamshirband, Shahaboddin and Esmaeilbeiki, Fatemeh and Zarehaghi, Davoud and Neyshabouri, Mohammadreza and Samadianfard, Saeed and Ghorbani, Mohammad Ali and Nabipour, Narjes and Chau, Kwok-Wing}, title = {Comparative analysis of hybrid models of firefly optimization algorithm with support vector machines and multilayer perceptron for predicting soil temperature at different depths}, series = {Engineering Applications of Computational Fluid Mechanics}, volume = {2020}, journal = {Engineering Applications of Computational Fluid Mechanics}, number = {Volume 14, Issue 1}, doi = {10.1080/19942060.2020.1788644}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200911-42347}, pages = {939 -- 953}, abstract = {This research aims to model soil temperature (ST) using machine learning models of multilayer perceptron (MLP) algorithm and support vector machine (SVM) in hybrid form with the Firefly optimization algorithm, i.e. MLP-FFA and SVM-FFA. In the current study, measured ST and meteorological parameters of Tabriz and Ahar weather stations in a period of 2013-2015 are used for training and testing of the studied models with one and two days as a delay. To ascertain conclusive results for validation of the proposed hybrid models, the error metrics are benchmarked in an independent testing period. Moreover, Taylor diagrams utilized for that purpose. Obtained results showed that, in a case of one day delay, except in predicting ST at 5 cm below the soil surface (ST5cm) at Tabriz station, MLP-FFA produced superior results compared with MLP, SVM, and SVM-FFA models. However, for two days delay, MLP-FFA indicated increased accuracy in predicting ST5cm and ST 20cm of Tabriz station and ST10cm of Ahar station in comparison with SVM-FFA. Additionally, for all of the prescribed models, the performance of the MLP-FFA and SVM-FFA hybrid models in the testing phase was found to be meaningfully superior to the classical MLP and SVM models.}, subject = {Bodentemperatur}, language = {en} } @inproceedings{Oehm2000, author = {Oehm, Gerald}, title = {Interaktive L{\"o}sung von Tourenproblemen}, doi = {10.25643/bauhaus-universitaet.623}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6238}, year = {2000}, abstract = {Durch Modifizierung des bekannten Savingsalgorithmus mittels fester bzw. variabler Savingsparameter l{\"a}ßt sich ein interaktiver Zugang zur L{\"o}sung des Tourenproblems begr{\"u}nden. Die Resultate des Savingsalgorithmus k{\"o}nnen dadurch um ca. 8,5\% verbessert werden. Durch die interaktive Arbeitsweise ist es m{\"o}glich, daß spezielle Vorgaben eines Nutzers und Erfahrungen des Bearbeiters Ber{\"u}cksichtigung finden. Die durchgef{\"u}hrten Rechnungen lassen erwarten, daß bei der Wahl der Savingsparameter noch Reserven f{\"u}r eine weitere Effizienzerh{\"o}hung liegen. Vermutlich spielt die Anpassung der Parameter an die Problemstruktur der gestellten Aufgabe eine Rolle. Durch lokale Suche l{\"a}ßt sich die Vielfalt der interaktiven Entscheidungsm{\"o}glichkeiten ein-grenzen und automatisieren.}, subject = {Transportproblem}, language = {de} } @inproceedings{RaueTimmlerAdami2000, author = {Raue, Erich and Timmler, Hans-Georg and Adami, Kay}, title = {Physikalisch nichtlineare Untersuchung der Aussteifungssysteme von zu revitalisierenden Plattenbauten mittels mathematischer Optimierungsalgorithmen}, doi = {10.25643/bauhaus-universitaet.569}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5690}, year = {2000}, abstract = {Im Zusammenhang mit der Revitalisierung von Plattenbauwerken kommt der Bewertung bzw. Neubewertung der vorhandenen Aussteifungssysteme große Bedeutung zu. Zur Aussteifung werden im allgemeinen raumbreite, raumhohe und meist unbewehrte Betonelemente verwendet, die lediglich konstruktiv miteinander verbunden sind. Im Rahmen der Untersuchung wird ein vorhandenes Berechnungsmodell zur physikalisch nichtlinearen Analyse von Aussteifungssystemen mehrgeschossiger Geb{\"a}ude unter Horizontallast so erweitert, dass unbewehrte Horizontalfugen ber{\"u}cksichtigt werden k{\"o}nnen. Die Analyse der Aussteifungssysteme wird auf der Basis der Methode der mathematischen Optimierung realisiert, wobei die aussteifenden W{\"a}nde als offene d{\"u}nnwandige, schlanke St{\"a}be betrachtet werden, die {\"u}ber dehnstarre Deckenscheibe (Diaphragmen) gekoppelt sind. Im Beitrag wird gezeigt, dass sich bei Ber{\"u}cksichtigung des physikalisch nichtlinearen Tragverhaltens und der damit verbundenen Schnittgr{\"o}ßenumlagerungen Tragreserven erschließen lassen, die auf die Standsicherheit sowohl vorhandener als auch revitalisierter Geb{\"a}ude angerechnet werden k{\"o}nnen.}, subject = {Großtafelbau}, language = {de} } @article{Schwerzmann, author = {Schwerzmann, Katia}, title = {Abolish! Against the Use of Risk Assessment Algorithms at Sentencing in the US Criminal Justice System}, series = {Philosophy \& Technology}, volume = {2021}, journal = {Philosophy \& Technology}, doi = {10.1007/s13347-021-00491-2}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20211207-45417}, pages = {1 -- 22}, abstract = {In this article, I show why it is necessary to abolish the use of predictive algorithms in the US criminal justice system at sentencing. After presenting the functioning of these algorithms in their context of emergence, I offer three arguments to demonstrate why their abolition is imperative. First, I show that sentencing based on predictive algorithms induces a process of rewriting the temporality of the judged individual, flattening their life into a present inescapably doomed by its past. Second, I demonstrate that recursive processes, comprising predictive algorithms and the decisions based on their predictions, systematically suppress outliers and progressively transform reality to match predictions. In my third and final argument, I show that decisions made on the basis of predictive algorithms actively perform a biopolitical understanding of justice as management and modulation of risks. In such a framework, justice becomes a means to maintain a perverse social homeostasis that systematically exposes disenfranchised Black and Brown populations to risk.}, subject = {Biopolitik}, language = {en} } @phdthesis{Vogler, author = {Vogler, Verena}, title = {A framework for artificial coral reef design: Integrating computational modelling and high precision monitoring strategies for artificial coral reefs - an Ecosystem-aware design approach in times of climate change}, isbn = {978-3-00-074495-2}, doi = {10.25643/bauhaus-universitaet.4611}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20220322-46115}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {243}, abstract = {Tropical coral reefs, one of the world's oldest ecosystems which support some of the highest levels of biodiversity on the planet, are currently facing an unprecedented ecological crisis during this massive human-activity-induced period of extinction. Hence, tropical reefs symbolically stand for the destructive effects of human activities on nature [4], [5]. Artificial reefs are excellent examples of how architectural design can be combined with ecosystem regeneration [6], [7], [8]. However, to work at the interface between the artificial and the complex and temporal nature of natural systems presents a challenge, i.a. in respect to the B-rep modelling legacy of computational modelling. The presented doctorate investigates strategies on how to apply digital practice to realise what is an essential bulwark to retain reefs in impossibly challenging times. Beyond the main question of integrating computational modelling and high precision monitoring strategies in artificial coral reef design, this doctorate explores techniques, methods, and linking frameworks to support future research and practice in ecology led design contexts. Considering the many existing approaches for artificial coral reefs design, one finds they often fall short in precisely understanding the relationships between architectural and ecological aspects (e.g. how a surface design and material composition can foster coral larvae settlement, or structural three-dimensionality enhance biodiversity) and lack an integrated underwater (UW) monitoring process. Such a process is necessary in order to gather knowledge about the ecosystem and make it available for design, and to learn whether artificial structures contribute to reef regeneration or rather harm the coral reef ecosystem. For the research, empirical experimental methods were applied: Algorithmic coral reef design, high precision UW monitoring, computational modelling and simulation, and validated through parallel real-world physical experimentation - two Artificial Reef Prototypes (ARPs) in Gili Trawangan, Indonesia (2012-today). Multiple discrete methods and sub techniques were developed in seventeen computational experiments and applied in a way in which many are cross valid and integrated in an overall framework that is offered as a significant contribution to the field. Other main contributions include the Ecosystem-aware design approach, Key Performance Indicators (KPIs) for coral reef design, algorithmic design and fabrication of Biorock cathodes, new high precision UW monitoring strategies, long-term real-world constructed experiments, new digital analysis methods and two new front-end web-based tools for reef design and monitoring reefs. The methodological framework is a finding of the research that has many technical components that were tested and combined in this way for the very first time. In summary, the thesis responds to the urgency and relevance in preserving marine species in tropical reefs during this massive extinction period by offering a differentiated approach towards artificial coral reefs - demonstrating the feasibility of digitally designing such 'living architecture' according to multiple context and performance parameters. It also provides an in-depth critical discussion of computational design and architecture in the context of ecosystem regeneration and Planetary Thinking. In that respect, the thesis functions as both theoretical and practical background for computational design, ecology and marine conservation - not only to foster the design of artificial coral reefs technically but also to provide essential criteria and techniques for conceiving them. Keywords: Artificial coral reefs, computational modelling, high precision underwater monitoring, ecology in design.}, subject = {Korallenriff}, language = {en} }