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Cell-based simulations of biased epithelial lung growth
(2019)Physical BiologyDuring morphogenesis, epithelial tubes elongate. in the case of the mammalian lung, biased elongation has been linked to a bias in cell shape and cell division, but it has remained unclear whether a bias in cell shape along the axis of outgrowth is sufficient for biased outgrowth and how it arises. Here, we use our 2D cell-based tissue simulation software $\mathtt{ LBIBCell }$ to investigate the conditions for biased epithelial outgrowth. ...Journal Article -
Fabrication and Design of Wood-Based High-Performance Composites
(2019)Journal of Visualized Experiments. JoVEDelignified densified wood is a new promising and sustainable material that possesses the potential to replace synthetic materials, such as glass fiber reinforced composites, due to its excellent mechanical properties. Delignified wood, however, is rather fragile in a wet state, which makes handling and shaping challenging. Here we present two fabrication processes, closed-mold densification and vacuum densification, to produce high-performance ...Journal Article -
Encounters in Borderlands: Borderlining Animals and Technology at Frankfurt Airport
(2019)Environmental HumanitiesFocusing on a global hub of aviation, Frankfurt Airport, this essay examines encounters between animals and technology in airport operation. In order to understand how airport practices constantly negotiate the borders with local environments or even produce new ones, we draw on Gloria Anzaldúa’s concept of “borderlands.” Extending this notion from human to nonhuman inhabitants and passengers of airports opens up for novel possibilities ...Journal Article -
How Many Weak-Keys Exist in T-310
(2019)Tatra Mountains Mathematical PublicationsT-310 is an important Cold War cipher. The cipher is extremely complex and it outputs extremely few bits from the internal state. A recent paper [Courtois, N. T.: Decryption oracle slide attacks on T-310, Cryptologia, 42 (2018), no. 3, 191–204] shows an example of a highly anomalous key such that T-310 can be broken by a slide attack with a decryption oracle. In this paper, we show that the same attacks are ALSO possible for regular keys ...Journal Article -
Fast screening of illicit drugs in beverages and biological fluids by direct coupling of thin film microextraction to dielectric barrier discharge ionization-mass spectrometry
(2019)The AnalystA direct and fast method for screening and quantification of illicit drugs in beverages and biologicalfluidswas developed by using dielectric barrier discharge (DBD) as ionization technique, in combination withhigh-resolution mass spectrometry. Extraction of the targeted analytes was carried out with thinfilmmicroextraction (TFME) using ultrasound as agitation method. The targeted analytes were then thermallydesorbed and introduced into ...Journal Article -
Cardinality Estimators do Not Preserve Privacy
(2019)Proceedings on Privacy Enhancing TechnologiesCardinality estimators like HyperLogLog are sketching algorithms that estimate the number of distinct elements in a large multiset. Their use in privacy-sensitive contexts raises the question of whether they leak private information. In particular, can they provide any privacy guarantees while preserving their strong aggregation properties? We formulate an abstract notion of cardinality estimators, that captures this aggregation requirement: ...Journal Article -
Ancillary vegetation measurements at ICOS ecosystem stations
(2018)International AgrophysicsThe Integrated Carbon Observation System is a Pan-European distributed research infrastructure that has as its main goal to monitor the greenhouse gas balance of Europe. The ecosystem component of Integrated Carbon Observation System consists of a multitude of stations where the net greenhouse gas exchange is monitored continuously by eddy covariance measurements while, in addition many other measurements are carried out that are a key ...Journal Article -
Radiation measurements at ICOS ecosystem stations
(2018)International AgrophysicsSolar radiation is a key driver of energy and carbon fluxes in natural ecosystems. Radiation measurements are essential for interpreting ecosystem scale greenhouse gases and energy fluxes as well as many other observations performed at ecosystem stations of the Integrated Carbon Observation System (ICOS). We describe and explain the relevance of the radiation variables that are monitored continuously at ICOS ecosystem stations and define ...Journal Article -
Eddy covariance raw data processing for CO2 and energy fluxes calculation at ICOS ecosystem stations
(2018)International AgrophysicsThe eddy covariance is a powerful technique to estimate the surface-atmosphere exchange of different scalars at the ecosystem scale. The EC method is central to the ecosystem component of the Integrated Carbon Observation System, a monitoring network for greenhouse gases across the European Continent. The data processing sequence applied to the collected raw data is complex, and multiple robust options for the different steps are often ...Journal Article -
Standardisation of chamber technique for CO2, N2O and CH4 fluxes measurements from terrestrial ecosystems
(2018)International AgrophysicsChamber measurements of trace gas fluxes between the land surface and the atmosphere have been conducted for almost a century. Different chamber techniques, including static and dynamic, have been used with varying degrees of success in estimating greenhouse gases (CO2, CH4, N2O) fluxes. However, all of these have certain disadvantages which have either prevented them from providing an adequate estimate of greenhouse gas exchange or ...Journal Article