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Positioning our air hub
(2020)In each autumn term at ETH Zurich, Master in Spatial Development and Infrastructure Systems students work on an interdisciplinary group assignment, called Interdisziplinäre Projektarbeit (IPA). In this class, students work within a defined project area – with a time horizon and with several (political) constraints - on the spatial and transport planning as well as infrastructure management issues interdisciplinarily for a particular area. ...Student Paper -
Truth be told: Benchmarking BLE and IEEE 802.15.4
(2019)A large body of recent flooding-based communication protocol proposals for wire- less sensor networks exploit concurrent transmissions (CT). Many existing pro- tocols are designed to run on the IEEE 802.15.4 physical layer. Thus, there is extensive research on the conditions required for successfully receiving CT over IEEE 802.15.4. While IEEE 802.15.4 is popular in the research community, Blue- tooth Low Energy (BLE) has experienced ...Student Paper -
Multi-sensor wireless sensor network nodes for alpine environment monitoring
(2019)The Pizol Glacier is the first glacier in Switzerland to be declared dead in 2019 and it will not be the last if global warming continues to this extent. Because glaciers and permafrost are melting, our mountains are becoming more and more unstable. In the coming years it is expected that dangerous rockfalls will increase in size and quantity and that they will also occur in previously safe areas. At the same time, leisure activities ...Student Paper -
3D-Printed Inflatable Actuators
(2019)Designing soft inflatable actuators is not a trivial task due to the coupling between their function and their mechanical design. Hence, in order to realize a functional design, numerous design parameters and their interdependencies have to be studied. As a result, the design process is often both tedious and ambiguous as there is no well-defined approach to guide it. In this semester project, 3D-printed inflatable actuators were designed, ...Student Paper -
Equivalence of the catalytic entropy conjecture and the transitivity conjecture is plausible
(2019)In essence, the catalytic entropy conjecture states that for a given initial state and a target state with higher entropy there exists a unitary operator acting on the tensor product of the initial state and a state of an auxiliary system such that the marginal states after the action of the unitary are precisely the target state and the same auxiliary state respectively. Since the state of the auxiliary system remains unchanged, we refer ...Student Paper -
Low-Power Network Design: Work Hard, Play Hard
(2019)With the rapid expansion of the Internet of Things, an increasing number of applications relies on reliable, energy-efficient, and low-latency communication between small networked wireless devices. A large number of wireless communication protocols dealing with these challenges have been proposed in recent years. Their performance typically varies greatly with the application and environment they are used in. The EWSN Dependability ...Student Paper -
Preparation and characterization of mechanically alloyed, yttria containing steel powder for additive manufacturing of dispersion strengthened steels
(2019)Oxide-dispersion-strengthened (ODS) steel is a material that is being studied for its potential in high-temperature and high-irradiation applications, such as nuclear fusion reactors or IV generation fission reactors. Its properties derive from the presence of nano-dispersed oxide particles that act as a barrier against the movement of dislocations, hence reducing susceptibility to creep, and as sinks for irradiation-induced defects, thus ...Student Paper -
Low-power network design: work hard, play hard
(2019)Competing in a well-known competition in a field that you have no experience in can be hard for sure. In this semester thesis, we describe how we managed to design a low-power wireless protocol for a sensor network in less than 3 months of part-time work. Baloo is a novel protocol design framework, which offers an abstraction layer from the underlying hardware and enables fast protocol prototyping. Using Baloo, our goal was to create a ...Student Paper -
Is low-power wireless networking a reproducible science?
(2019)Recently, a noticeable number of attempts to reproduce experimental results across many different scientific fields were unsuccessful. In the field of low- power wireless networking, the dynamic behavior of the environment causes an inherited variability in the performance of wireless networking protocols, placing under consideration their reproducibility. In this semester project, a methodology for evaluating the performance of low- power ...Student Paper -
Chance-Constrained Programming for Autonomous Vehicles in Uncertain Environments
(2018)Trajectory planning in uncertain environments arises in several autonomous system applications including robotics, air traffic and autonomous driving. An approach to handle uncertainties with sufficiently high safety guarantees is through chance-constrained optimization. In this work, we consider the problem of trajectory planning for an autonomous vehicle in an uncertain environment comprised of a number of obstacles. First, we explore ...Student Paper