Biology. ‒ .مدرک عطق ار یزاسنیشام هتشر رد لیصحت نم ... Ich schreibe meine Doktorarbeit. Despite the critical importance of this infrastructure, water utilities are facing major financial challenges worldwide and are raising water fees in response. A Lorentz force flowmeter is an electromagnetic Flowmeter To accommodate the expansion of the approach to varied material demands among projects, a network model is required to simulate the material and information flows from one project to another. This work contributes to the advancement of infrastructure asset management of water distribution networks in several ways. To overcome the challenges and limitations, prevailing principles and methods in manufacturing industry are required to address the needs of construction supply chains. As a result, projects often face schedule delays and cost overruns. Chemistry and Applied Biosciences. Based on the given classification of influence factors, changes in demand, and effects, suitable methods for the modelling of changes in demands in connection with the changes of connected influence factors should be identified and tested for application. The infrastructure asset management process is a well-suited tool for providing such argumentation. As a further aspect, the demand for multifunctional materials is increasing. Doctoral Thesis, Zurich, ETH Zurich, 2019. Good management of material flow processes requires efficient coordination of material and associated information flows, which leads to reduced misalignment in deliveries. C. Tropea 1. The results from the application of the method on the simple and the real world example show that, even though the expected net benefits from the evaluation with the method with consideration of decision flexibility are higher than the ones from the Traditional Method, the difference is small for the given examples, within the error margin of the input parameters, which does not justify the additional effort required to consider the flexible decision process. Maschinenbau und Verfahrenstechnik / Dep. Project stakeholders can prevent material flows from the negative impact of late change using the system to digitally support the lean workflow. Hiermit versichere ich, die vorliegende Doktorarbeit unter der Betreuung von Prof. Dr.-Ing. im Maschinenbau Von der Fakultät für Maschinenwesen der Rheinisch-Westfälischen Technischen Hochschule Aachen zur Erlangung des akademischen Grades eines Doktors der Ingenieurwissenschaften genehmigte Dissertation vorgelegt von Diplom-Ingenieur Jens Schröder aus Wuppertal For this purpose senseering GmbH relies on current key technologies such as 5G, Artificial Intelligence, Big Data, Cloud & Edge Computing and DLT/Blockchain. Präsentation der Themen zum Download (PDF, 10.2 MB), A systematic approach to enabling digital supply chain coordination in construction projects. Kaczmarczyk, Andreas Biologie . ETH Zürich The use of the methodology for the identification and evaluation of intervention projects on the real world example shows that it can be applied to a real world situation and can deliver meaningful results. Considerable simplifications regarding the selection of key parameters and models must be made throughout the process, to keep the complexity at a manageable level, though the methodology can be adapted to take in the level of complexity that is required for different projects. Diese Doktorarbeit befasst sich mit der Analyse des Wassermanagements in ADMFCs mit einem Membranelektrolyten, um m ogliche Grenzen sowie die An-forderungen an einen stabilen Betrieb zu identi zieren. genehmigte Dissertation von Dipl.-Ing. November 2011, nat. Part I consists of Chapter 2. Dalhaus, Tobias Paul Franz-Josef Management, Technologie und Ökonomie Management, Technology, and Economics. Von der Fakultät für Maschinenbau, Elektrotechnik und Wirtschaftsingenieurwesen der Brandenburgischen Technischen Universität Cottbus - Senftenberg zur Erlangung des akademischen Grades eines Doktor-Ingenieurs genehmigte Dissertation vorgelegt von Master of Science Maxim Bonkarev Geboren am 6. Recent historical events such as the 2002 European flood, hurricane Katrina (2005), or the Tōhoku earthquake and tsunami (2011) have shown that the analysis and understanding of large-scale infrastructure systems are essential for research, engineering and society. As the resources available to managers to protect their infrastructures are limited, it is essential for them to be aware of the probable consequences (i.e., risk) in order to set priorities and be resource-efficient. Part II consists of Chapters 3-6. bridges and road sections), the functional interrelationships of the affected objects, the resulting probable consequences, duration of network disruption, and the restoration of the network. construction, operation, maintenance, expansion, and demolition). The used models and methods often do not consider the uncertain future demands on the buildings. While the implementation of the risk assessment process in the first part is mainly based on computational models, the second part focuses on the development of innovative mathematical models from the field of network sciences. Technische Hochschule Zürich. Without clear and convincing argumentation, future water fee hikes will become increasingly difficult to obtain. The second part of the dissertation explores the combination of lean principles and digital technologies; namely, lean workflows with integrated management systems. The third part of the dissertation moves the focus to the management of bulk commodity. of Mechanical and Process Eng. The main themes of the three parts are pipe failure prediction with artificial neural networks (ANNs), optimal intervention planning for water distribution networks, and optimizing the execution of operational maintenance programs. Maschinenbau, Kapitel Werkstofftechnik, Seiten E 1–E 120. Doctoral Thesis, Zurich, ETH Zurich, 2017. Secondly, a methodology is presented for determining optimal short-term intervention programs on large, real-world water distribution networks that considers all network components requiring preventive intervention planning. Labouesse, Marie Anais Gesundheitswissenschaften und Technologie . Springer-Verlag, Ber-lin, 17. This thesis aims to fulfil this need by providing specific examples of how digitalization dissolves data silos within utilities and between them and enables the adoption of efficient algorithms to tangibly improve asset management of water distribution networks. Vorwort Die vorliegende Dissertation entstand während meiner Tätigkeit als wissenschaftlicher Mitar-beiter am Institut für Werkzeugmaschinen und Betriebswissenschaften (iwb) der Technischen Universität München (TUM) und an der Projektgruppe für Ressourceneffiziente mechatroni- Diese Doktorarbeit beschäftigt sich mit numerischen Untersuchungen von Zweiphasenströmungen auf und durch elementare und komplexe feste Strukturen von unterschiedlicher Benetzbarkeit. This process is a systematic approach to ensure that infrastructure continues to provide an adequate level of service during all lifecycle phases (i.e. Dissertation Beispiele – Medizin, Jura und mehr. One task of building managers is to ensure that their buildings function as required over a defined period of time, while the ability of buildings to meet demands changes over time due to two reasons: (1) The change of the ability of the building to meet fixed demands, normally through deterioration, and (2) the change of demands for the building. Veröffentlicht am 1. This allows the application of the proposed process to estimate the spatio-temporal risk of a realistic road network due to the occurrence of time-varying multi-hazard events, considering physical and functional effects on network objects (e.g. In pursuit of this, the dissertation aims to \textit{develop a systematic approach and the corresponding techniques to improve the coordination of material and information flows in construction projects, considering the integration of lean workflows, digital technologies, and optimization algorithms, with a special focus on stakeholders’ collaborative decision-making processes}. Architecture. Environmental Systems Science. This requires determining the intervention to be executed immediately and estimating the ones that might be executed in the future, i.e. Taking into consideration this flexibility of management to decide which intervention program to follow is believed to be a cornerstone of any method to be used to determine optimal intervention programs in management systems where there is uncertainty with respect to future demand. Civil, Environmental and Geomatic Engineering. The application of the method on this example showed that the Real Options Method required more effort than the Traditional Method without the consideration of decision flexibility before and during the evaluation for the definition of the flexible decision making, the definition of the consequences of the decision making at these decision points and values over the investigated time period, and the calculation of the probabilities of execution for each possible time and value where a decision of execution is beneficial. endstream endobj 67 0 obj <. 88 0 obj <>/Filter/FlateDecode/ID[<60C7F4657C21AB44BF61401B37CCD697><1172850B494EE04696C16FA09E88A2BC>]/Index[66 37]/Info 65 0 R/Length 110/Prev 162370/Root 67 0 R/Size 103/Type/XRef/W[1 3 1]>>stream 5 Abstract This work is dedicated to experimental investigations for the calibration of a Lorentz force flowmeter in liquid metal flows. Mechanical and Process Engineering. Mechanical and Process Engineering. Die vorliegende Doktorarbeit befasst sich mit der Entwicklung und Anwen-dung eines neuartigen, instationären Reynolds-gemittelten Navier-Stokes (URANS) Modells, welches als Basis das Skalen-adaptive Konzept (SAS), eingeführt von Menter und Egorov [35], verwendet. Krall, Nikolaus Chemie und Angewandte Biowissenschaften . Dr. Rudolf Vetschera vom Lehrstuhl für Organisation und Planung der Universität Wien für die Betreuung meiner The Real Options Method for the evaluation of intervention programs with consideration of decision flexibility and the methodology for the identification and evaluation of intervention projects with consideration of decision and building flexibility are applied by analysing the situation, building adequate models of the uncertain key parameters, establishing the static and dynamic evaluation models, identifying possible intervention projects, and evaluating these intervention projects with the method for the evaluation of intervention programs with consideration of decision flexibility. Biology. November 2018 von Franziska Pfeiffer. N. Damaschke 2. November 2020. D’Acunto, Pierluigi Architektur . The institutional repository TUprints offers all members of TU Darmstadt the opportunity to publish scientific research papers as primary or secondary electronic publication. More precisely, this work provides a novel risk assessment process for infrastructure managers, designed to estimate the spatio-temporal risk of complex infrastructure systems due to the occurrence of time-varying multi-hazard events. Chemistry and Applied Biosciences. Second, a complex network approach is used to investigate traffic flow dynamics on road networks, which provides reasonable estimates for traffic flow changes and significantly reduces the computing time of classical simulation models. The approach consists of two main steps that contractors should take: 1) monitoring the dynamic demand fluctuations using a 4D model that captures the as-built site progress and updated look-ahead schedules, 2) modifying original orders to accommodate the demand fluctuations where quantities of additional orders and outsourced orders are determined by a heuristic evolutionary algorithm. Doctoral Thesis, Zurich, ETH Zurich, 2020. In this thesis, a Real Options Method for the evaluation of intervention programs with consideration of decision flexibility under uncertainty in changes in demand is presented and applied to a simple example of a fictive office building and a real world example, a clinic of a Swiss university hospital. The untapped potential of digitalization represents a clear path forward to achieving these ambitious goals. h�bbd```b``�"��I�r,n &��H���"�_��|�X�e�٩`RDN�$CT@�dU�� 2� l�\�lt���7�%A�@UT �30��` ��R Lean management principles and Industry 4.0 technologies combined with various optimization algorithms have dominated manufacturing supply chains in the past decade and have the potential to enhance stakeholder collaboration and workflow efficiency. Mechanical and Process Engineering. Either within or among projects, the implementation of the two-step approach in both cases proves the benefits of balancing the daily material supply and demand according to a continuously updated schedule. Hiermit versichere ich, die vorliegende Doktorarbeit unter der Betreuung von Prof. Dr. rer. Also, during early steps of the methodology, a test can be made whether the considered case will have a significant impact. Ich habe mein Maschinenbau-Studium abgebrochen. Kries, Hajo Chemie und Angewandte Biowissenschaften . Chen, Tian Maschinenbau und Verfahrenstechnik . Physics . geb. Physics Hiermit versichere ich, die vorliegende Doktorarbeit unter der Betreuung von Prof. Dr.-Ing. Supply chain management plays a fundamental role in running a successful construction project to ensure cost-efficient, accurate, and on-time material delivery to construction sites. S. Grundmann nur mit den angegebenen Hilfsmitteln selbständig angefertigt zu haben. vom Fachbereich Maschinenbau und Verfahrenstechnik der Technischen Universit at Kaiserslautern zur Verleihung des akademischen Grades Doktor-Ingenieur (Dr.-Ing.) C. Tropea Mitberichterstatter: Prof. Dr.-Ing. The willingness of stakeholders to bear this growing financial burden is low. determining an intervention program. �\8:`�:$ ���L������D�b:�"���Ŗ����A�20��1�F�1�C�r20��t200o����Ti e0 �p _ Mitberichterstatter: Prof. Dr.-Ing. Exploiting Digitalization to Determine Optimal Intervention Programs for Water Distribution Networks, Towards integrating risk in railway asset management, Risk Assessments of Complex Infrastructure Systems Considering Spatial and Temporal Aspects. This method is based on Real Option Analysis and Decision Tree Analysis. Müller, Jochen Maschinenbau und Verfahrenstechnik . [2] Dieter, George E. et al. Michael Suppa geboren am 13.01.1976 in Hannover 2008 Given the fluctuating demand for concrete, an approach that uses digitized information within a short-term planning window is presented to improve the ordering of concrete by minimizing waste and cost. Finally, a study is provided exploring the influence of maintenance density and routing algorithm on the efficiency gains that can be achieved by integrating municipal maintenance tasks such as hydrant and valve inspections and meter replacements into combined work packages. It strongly relies on stakeholder knowledge and requires good and extens-ive stakeholder communication throughout the complete process. The main objective of this research is to investigate how to consider the decision flexibility of the decision maker in the determination and evaluation of intervention programs with consideration of the uncertainty in future demand and to identify a method that can support a decision maker in the determination and evaluation of such intervention programs. The increasing demands of stakeholders for decision transparency, resource efficiency and sustainability will continue to serve as catalysts for the development and professionalization of infrastructure asset management. John, Michael Otto Maschinenbau und Verfahrenstechnik . Von der Fakultat f¨ ur Maschinenbau¨ der Gottfried Wilhelm Leibniz Universit¨at Hannover zur Erlangung des akademischen Grades Doktor-Ingenieur genehmigte Dissertation von Dipl.-Ing. The first part of the dissertation focuses on the comprehensive review of contemporary supply chain management in construction projects. Mechanical and Process Engineering. Burrin, Claire Mathematik . Data silos further limit the capabilities of construction stakeholders to collaborate and inhibit the reliability of their decisions on material supplies and demands. The use of the method for the determination and evaluation of intervention programs with consideration of decision flexibility shows that the method allows for appropriate consideration of decision flexibility and, therefore, can lead to an increased benefit for building managers. Uncertain changes in demand make it undesirable to attempt to evaluate intervention programs now and then determine exactly which one to follow over the remaining planning horizon. To give better insights into the resilience of the infrastructure system to natural hazards and to help the infrastructure managers to make better decisions in such situations, a restoration model is formulated to determine optimal recovery responses in the aftermath of such events. Several aspects of the novel methodology are explored in additional chapters. Ultimately, digitalization will not only transform decision-making but will also fundamentally reshape the organizational structures within utilities as well as the water sector itself. One review is conducted to develop an objective and data-driven assessment of the use of automation and digital technologies to provide a better understanding of their potential benefits and limitations. in Atlanta, USA Berichterstatter: Prof. Dr.-Ing. Michael Schäfer nur mit den angegebenen Hilfsmitteln selbständig angefertigt zu haben. The consideration of decision flexibility in the construction of intervention programs is not applicable for all building components, as the application is only beneficial under certain conditions. The capability of the system to improve the coordination of changes over an engineer-to-order material flow process simulation of the office building project is demonstrated to be superior than that of the traditional management framework. The contents of the thesis is divided into three main parts. Although supply chain management helps stakeholders complete construction projects, the problems associated with material flow processes, such as material delays, rework, and incorrect deliveries remain frequent due to a lack of efficient supply chain integration and coordination. Mechanical and Process Engineering Nagel, Joseph Benjamin Bau, Umwelt und Geomatik . Bürkli, Anja Umweltsystemwissenschaften . The usefulness of the CPI curve is demonstrated through two case studies. C. Tropea und Dr.-Ing. This adds considerable uncertainties to the management of material flows from the planning phase to the installation phase, in contrast to the manufacturing processes that happen in a closed and consistent work environment. To embed the lean workflow in a digital platform, an integrated management system is developed that focuses on the communication of design-change and schedule-change information. Results from both reviews suggest that a holistic integration of the supply chains and stakeholders’ collaborative decision making through digitalization (e.g., integrated BIM-IoT technologies) together with and lean workflows are essential to improve supply chain coordination but are missing from current practices. This part explores the combination of lean principles, digital technologies, and optimization algorithms to improve stakeholders’ decision-making processes in the coordination of material flows. Mechanical and Process Engineering. Ich habe mein Maschinenbau-Studium abgebrochen. A methodology to make accurate preliminary estimates of construction material quantities for construction projects. Doctoral Thesis, Zurich, ETH Zurich, 2018. Nobs, Samuel Philip Biologie . In such a situation, the decision maker can make a choice of which intervention program to follow, either with or without consideration of decision flexibility. Future research should also consider a deeper analysis of the probabilistic models used for the evaluation of intervention programs, which were in this thesis based on simplifications. genehmigte D i s s e r t a t i o n vorgelegt von Dipl.-Phys. In this part, a general risk assessment process for infrastructure systems affected by natural hazards is introduced. h�b```�Y�,B �����������X���m��� First, a network model for interdependent infrastructure systems is presented, which is based on the mathematical concept of the spatially embedded random network, and therefore, needs only a limited amount of data. Thus, the method and methodology with consideration of decision flexibility investigated in this thesis have to be applied in the context of the management of related building components without consideration of flexibility. Dafur werden zun achst mehrere Extremf alle modelliert um … The method with consideration of decision flexibility does not lead to better intervention programs for all components of a building, and thus should only be applied if management flexibility is a possibility, the uncertainty of key parameters is high, and the intervention costs are high compared to the benefits. Landig, Renata Eva Klementine Physik . The proposed approach is demonstrated to be useful to provide optimal order quantities of concrete with minimal costs within a five-day planning window. This is illustrated in the material flow processes for the erection of an office building with prefabricated columns. The ramifications of the results from the application of both the method and the methodology are analysed. Zuverlässige numerische Simulationen von solchen Mehrphasen- und Mehrskalen-Prozessen erfordern eine fundierte Modellierung der Darmstadt, den … This work represents the first instance where detailed look-ahead plans, BIM, RFID, and a common data environment are integrated in supply chain collaboration to replace otherwise ad-hoc procedures. Bösch, Fabian Maschinenbau und Verfahrenstechnik . Ortner, Franziska Marei Maschinenbau und Verfahrenstechnik . P. Steinmann Korreferenten: Prof. Dr.-Ing. Saša Bakić aus Darmstadt Berichterstatter: Prof. Dr.-Ing. The most substantial contribution of this thesis is found in Part II on optimal intervention planning. The decision flexibility about the interventions to be executed over the investigated time period is the focus of this thesis. This part selects ready-mix concrete as a representative type of bulk commodity to study this dynamic.