Learning stable and predictive structures in kinetic systems: Benefits of a causal approach

Learning kinetic systems from data is one of the core challenges in many fields. Identifying stable models is essential for the generalization capabilities of data-driven inference. We introduce a computationally efficient framework, called CausalKinetiX, that identifies structure from discrete time, noisy observations, generated from heterogeneous experiments. The algorithm assumes the existence of an underlying, invariant kinetic model, a key criterion for reproducible research. Results on both simulated and real-world examples suggest that learning the structure of kinetic systems benefits from a causal perspective. The identified variables and models allow for a concise description of the dynamics across multiple experimental settings and can be used for prediction in unseen experiments. We observe significant improvements compared to well established approaches focusing solely on predictive performance, especially for out-of-sample generalization

Concrete renovation and enhancing of fire protection of an existing tunnel with sprayable polymer cement concrete (SPCC)

The approx. 342 m long tunnel located in the old town is constructed as a two cell rectangular frame section as part of the L530 in Lüdenscheid in 1971. During the stocktaking process it was detected that the demands of technical standards like e.g. RBT, ZTV-ING, RIZ-ING are not met. The construction also lacks of the structural fire protection. A recalculation of the rectangular frame section in case of exposure to fire showed that there is no sufficient load capacity. Due to the location in the city center with construction work above the tunnel line this topic is of major concern. Furthermore the need of concrete renovation was obtained, e.g. cracks, defects in the concrete, chlorides and in insufficient concrete cover. For the concrete renovation and the enhancing of fire protection it is planned to apply a sprayable polymer cement (spcc) to an extensive area. The report describes the calculatory verifications of the fire case and the intended renovation and enhancing concept

Anonymous voting and minimal manipulability

We compare the manipulability of different choice rules by considering the number of manipulable profiles. We establish the minimal number of such profiles for tops-only, anonymous, and surjective choice rules, and show that this number is attained by unanimity rules with status quo.public economics ;

Decentralised control of material or traffic flows in networks using phase-synchronisation

We present a self-organising, decentralised control method for material flows in networks. The concept applies to networks where time sharing mechanisms between conflicting flows in nodes are required and where a coordination of these local switches on a system-wide level can improve the performance. We show that, under certain assumptions, the control of nodes can be mapped to a network of phase-oscillators. By synchronising these oscillators, the desired global coordination is achieved. We illustrate the method in the example of traffic signal control for road networks. The proposed concept is flexible, adaptive, robust and decentralised. It can be transferred to other queuing networks such as production systems. Our control approach makes use of simple synchronisation principles found in various biological systems in order to obtain collective behaviour from local interactions

Minimal Manipulability: Anonymity and Unanimity

This paper is concerned with the minimal number of profiles at which a unanimous and anonymous social choice function is manipulable. The lower bound is derived when there are three alternatives to choose from. Examples of social choice functions attaining the lower bound are given. We conjecture that these examples are in fact all minimally manipulable social choice functions. Since some of these examples are even Pareto optimal, we have also derived the lower bound for Pareto optimal and anonymous social choice functions. Some of the minimally manipulable Pareto optimal and anonymous social choice functions can be interpreted as status quo voting.mathematical economics;

The Inside-Outside Duality in Inverse Scattering Theory

In this thesis we investigate a connection between far field data that arises from time-harmonic scattering problems and interior eigenvalues of corresponding scattering objects. This connection has been used to develop the so-called ``inside-outside duality`` method, which can be used to detect the interior eigenvalues from far field data. In this method a particular focus lies on the behavior of certain eigenvalues of the far field operator, which characterizes the interior eigenvalues. This thesis is separated into two parts. In the first part, we consider acoustic, time-harmonic scattering from impenetrable and penetrable scattering objects. We start by considering acoustic scattering from impenetrable objects and subsequently outline the principle arguments for the derivation of the inside-outside duality. In this context we also show how to work with near field data instead of far field data. In the remainder of the first part, the arguments are then adapted to scattering from penetrable scattering objects that may contain cavities. For all scattering scenarios under investigation, numerical examples for the verification of the theoretical results are provided. In the second part of this thesis we consider elastic and electromagnetic scattering problems. In the case of elastic scattering, we assume an isotropic background medium in which either a rigid or a penetrable scattering object is embedded. For electromagnetic scattering, we consider penetrable objects that may contain cavities. The main challenge in this part lies in adapting the preceding arguments for the different scattering equations. Therefore we focus on theoretical results, which can potentially be used to detect interior eigenvalues from corresponding far field data

Warasdiner Grenze - Extra Entwicklung eine Mikroregion in Drautallgebiet (Podravina)

Nekoliko puta u povijesti austrijskog vojnog kordona u Hrvatskoj Varaždinska je krajina postala polazištem procesa koji su se ubuduće proširili na cjelinu vojnokrajiške ustanove. Riječ je najprije o krajiškoj organizaciji u 17. te o reformama u 18. stoljeću, a potom prije svega o ukidanju Vojne krajine u drugoj polovici 19. stoljeća. U kontekstu likvidacije kordona (osobito u pretpovijesti ovog procesa) specifičan geografski položaj Varaždinske krajine igrao je veliku ulogu. Pogled na statističke podatke iz 19. stoljeća pokazuje da je Varaždinska krajina bila dio ravnomjerno oblikovanog i strukturiranog vojnokrajiškog sustava u Hrvatskoj i Slavoniji.Einige Male in der Geschichte des österreichischen Militärkordons in Kroatien wurde die Warasdiner Grenze zum Ausgangspunkt für Prozesse, die sich in der Folge auf die Gesamtheit der Militärgrenzeinrichtung ausweiteten: Namentlich betrifft dies zunächst die Grenzorganisation im XVII. sowie die Reformen im XVIII. Jahrundert, und dann vor allem die Auflösung der Militärgrenze in der zweiten Hälfte des XIX. Jahrunderts. Im Kontext der Liquidierung des Kordons (besonders in der Vorgeschichte dieses Prozesses) spielte die spezifische geographische Lage des Warasdiner Generalates eine bedeutende Rolle. Ein Blick auf statistische Daten aus dem XIX. Jahrundert zeigt, daß die Warasdiner Grenze Teil eines gleichmäßig ausgeformten und strukturierten Militärgrenzsystems in Kroatien-Slawonien war

TOWARDS AN INTEGRATED EVALUATION OF HUMANCENTERED SERVICE SYSTEMS AND CORRESPONDING BUSINESS MODELS: A SYSTEMS THEORY PERSPECTIVE

The design of services and their corresponding business models (BMs) aims at a value creation for customers and service providers. Thus, the outcome is interrelated. However, both – the design service systems and BMs – are evaluated separately because they do not have a common theoretical foundation. Therefore, this design science research aims at the development of an evaluation scheme for the design of services and BMs. Building on a general systems theory, we conceptualize human-centered service systems (HCSSs) and their corresponding BMs as a coherent system. This conceptualization gives the possibility to provide concrete analytical levels that allow an integrated evaluation of this system. We apply this evaluation scheme in a care service context and show that the integrated evaluation allows a more concrete assessment of the combined design of HCSS and the corresponding BMs. With this evaluation scheme, we offer an operationalization of a summative evaluation for the design of HCSSs and BMs as an artifact. Also, this provides a new perspective on theory-rooted knowledge for designing and evaluating service systems. For practitioners, the evaluation results allow the coordination of the value proposition in the service systems and BMs