Sa-TikZ: a library to draw switching architectures

in Ars TeXnica (2013), 15

The article illustrates how it is possible to draw some types of switching architectures in a simple manner. The Sa-TikZ library provides not only the keys devoted to the drawing part, but also the keys ... [more ▼]

The article illustrates how it is possible to draw some types of switching architectures in a simple manner. The Sa-TikZ library provides not only the keys devoted to the drawing part, but also the keys devoted to customize the aspect of the architectures in the spirit of the TikZ syntax. [less ▲]

Scalable Gaussian Process Inference with Finite-data Mean and Variance Guarantees

in Proceedings of the 22nd International Conference on Artificial Intelligence and Statistics (AISTATS) 2019 (2019)

(Semi-) Pervasive Gaming Educational and Entertainment Facilities via Interactive Video-to-Video Communication over the Internet, for Museum Exhibits

in Papadopoulos, Harris; Andreou, Andreass; Iliadis, Lazaros (Eds.) et al Artificial Intelligence Applications and Innovations (2013)

Based upon the core concept of the LiveCity Project we focus on the specific City Cultural Experiences v2v Pilot,designed to allow for visitors at two defined locations to interact with one another in a ... [more ▼]

Based upon the core concept of the LiveCity Project we focus on the specific City Cultural Experiences v2v Pilot,designed to allow for visitors at two defined locations to interact with one another in a joint experience and to get educational/entertainment benefits, originating directly from the museum content delivery. We discuss a set of semi-pervasive games (the so-called “Twin Cities”games) which are designed to bring people together at remotely twinned locations through the use of video-to-video communication and multitouch interaction. We also present an early classification of video-to-video (v2v) interaction games that is designed to inform designers about the potential of such technologies. We classify them as: using video for awareness and communication, interacting with video and video as a game. [less ▲]

Sensitivity Analysis and Shape Optimisation through a T-spline Isogeometric Boundary Element Method

Scientific Conference (2013, March 25)

Sensitivity analysis and shape optimisation with the isogeometric boundary element methods

Scientific Conference (2012, March 27)

Sensitivity Analysis on Regularity Based Driver Advisory Systems

in 2020 IEEE 23rd International Conference on Intelligent Transportation Systems (ITSC) (2020, December)

A sensitivity-based approach for adaptive decomposition of anticipatory network traffic control

in Transportation Research. Part C : Emerging Technologies (2016), 66

Anticipatory optimal network control is defined as the problem of determining the set of control actions that minimizes a network-wide objective function. This not only takes into account local ... [more ▼]

Anticipatory optimal network control is defined as the problem of determining the set of control actions that minimizes a network-wide objective function. This not only takes into account local consequences on the propagation of flows, but also the global network-wide routing behavior of the users. Such an objective function is, in general, defined in a centralized setting, as knowledge regarding the whole network is needed to correctly compute it. Reaching a level of centralization sufficient to attain network-wide control objectives is however rarely realistic in practice. Multiple authorities are influencing different portions the network, separated either hierarchically or geographically. The distributed nature of networks and traffic directly influences the complexity of the anticipatory control problem. This is our motivation for this work, in which we introduce a decomposition mechanism for the global anticipatory network traffic control problem, based on dynamic clustering of traffic controllers. Rather than solving the full centralized problem, or blindly performing a full controller-wise decomposition, this technique allows recognizing when and which controllers should be grouped in clusters, and when, instead, these can be optimized separately. The practical relevance with respect to our motivation is that our approach allows identification of those network traffic conditions in which multiple actors need to actively coordinate their actions, or when unilateral action suffices for still approximating global optimality. This clustering procedure is based on well-known algebraic and statistical tools that exploit the network's sensitivity to control and its structure to deduce coupling behavior. We devise several case studies in order to assess our newly introduced procedure's performances, in comparison with fully decomposed and fully centralized anticipatory optimal network control, and show that our approach is able to outperform both centralized and decomposed procedures. © 2016 Elsevier Ltd. [less ▲]

Shape Optimization Directly from CAD: an Isogeometric Boundary Element Approach Using T-splines

Report (2016)

Shaping Pulses to Control Bistable Monotone Systems Using Koopman Operator

in 10th IFAC Symposium on Nonlinear Control Systems (2016, August)

In this paper, we further develop a recently proposed control method to switch a bistable system between its steady states using temporal pulses. The motivation for using pulses comes from biomedical and ... [more ▼]

In this paper, we further develop a recently proposed control method to switch a bistable system between its steady states using temporal pulses. The motivation for using pulses comes from biomedical and biological applications (e.g. synthetic biology), where it is generally di cult to build feedback control systems due to technical limitations in sensing and actuation. The original framework was derived for monotone systems and all the extensions relied on monotone systems theory. In contrast, we introduce the concept of switching function which is related to eigenfunctions of the so-called Koopman operator subject to a xed control pulse. Using the level sets of the switching function we can (i) compute the set of all pulses that drive the system toward the steady state in a synchronous way and (ii) estimate the time needed by the ow to reach an epsilon neighborhood of the target steady state. Additionally, we show that for monotone systems the switching function is also monotone in some sense, a property that can yield e cient algorithms to compute it. This observation recovers and further extends the results of the original framework, which we illustrate on numerical examples inspired by biological applications. [less ▲]

Sharing Physical Objects Using Smart Contracts

in Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct (2018)

Networked digital sharing economy services enable the effective and efficient sharing of vehicles, housing, and everyday objects. However, contemporary online sharing platforms face several challenges ... [more ▼]

Networked digital sharing economy services enable the effective and efficient sharing of vehicles, housing, and everyday objects. However, contemporary online sharing platforms face several challenges related to the establishment of trust among peers, as well difficulties to deal with the growing number of intermediaries (e.g., payment, insurance) needed to ensure an adequate service delivery. We designed and developed "Just Share It" (JSI), an interactive system that enables the sharing of personal physical possessions (e.g., power tools, toys, sports gear) by directly connecting lenders and borrowers, as peers, through mobile technology. The JSI system utilizes a blockchain ledger and smart contracting technologies to improve peer trust and limit the number of required intermediaries, respectively. In this submission, we briefly review emergent challenges in this space, describe the JSI prototype system and its trust model, and reflect on future architectural opportunities for an eventual "in the wild" deployment. [less ▲]