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We present the Regensburg Breast Shape Model (RBSM)—a 3D statistical shape model of the female breast built from 110 breast scans acquired in a standing position, and the first publicly available. Together with the model, a fully automated, pairwise surface registration pipeline used to establish dense correspondence among 3D breast scans is introduced. Our method is computationally efficient and requires only four landmarks to guide the registration process. A major challenge when modeling female breasts from surface-only 3D breast scans is the non-separability of breast and thorax. |
Transfer learning schemes based on deep networks which have been trained on huge image corpora offer state-of-the-art technologies in computer vision. Here, supervised and semi-supervised approaches constitute efficient technologies which work well with comparably small data sets. Yet, such applications are currently restricted to application domains where suitable deep network models are readily available. In this contribution, we address an important application area in the domain of biotechnology, the automatic analysis of CHO-K1 suspension growth in microfluidic single-cell cultivation, where data characteristics are very dissimilar to existing domains and trained deep networks cannot easily be adapted by classical transfer learning. |
We extend the study of the random Hermite second-order ordinary differential equation to the fractional setting. We first construct a random generalized power series that solves the equation in the mean square sense under mild hypotheses on the random inputs (coefficients and initial conditions). From this representation of the solution, which is a parametric stochastic process, reliable approximations of the mean and the variance are explicitly given. Then, we take advantage of the random variable transformation technique to go further and construct convergent approximations of the first probability density function of the solution. |
This research concerns the use of warped ruled surfaces in the load bearing structures of 19th century stone bridges in Prague. The descriptions of a skew arch used at The Negrelli Viaduct and a special surface called “corne de vache” used at The Legion Bridge are based not only on historical survey, archival materials and period publications, but also on contemporary measurements. |
Going green, green business, and sustainable business are topics on everyone’s mind. But what does all this mean exactly? A Primer on Sustainable Business answers that question and provides an introduction to the basics you need to know. |
Semi-regulated, privately-operated public transport (PT) systems are common in low and middle-income countries of the Global South. Several cities are now planning or implementing formalized schemes intended to improve quality of service, safety, security of PT services and to reduce negative externalities, with limited success. Bogotá, which embarked on a progressive citywide PT reform process starting in 2009, replicates the negative experience of other large cities introducing citywide transit reforms. |
In this paper we study a family of limsup sets that are defined using iterated function systems. Our main result is an analogue of Khintchine’s theorem for these sets. We then apply this result to the topic of intrinsic Diophantine Approximation on self-similar sets. In particular, we define a new height function for an element of Qd
contained in a self-similar set in terms of its eventually periodic representations. For limsup sets defined with respect to this height function, we obtain a detailed description of their metric properties. The results of this paper hold in arbitrary dimensions and without any separation conditions on the underlying iterated function system. |
Shallow Hilbert curve patterns with easily programmable texture density were selected for laser texturing of stainless steel substrates. Two different texture path segment lengths (12 and 24 µm) and four different laser power percentages (5%, 10%, 15%, and 20%) were investigated. The textured and smooth substrates were coated with thin polydopamine/polytetrafluoroethylene (PDA/PTFE) coatings for tribological property assessment. The effects of texture density (texture area coverage) and laser power on the durability and friction of the coated surfaces were studied. |
The paper traces the evolution the concept of socioeconomic vulnerability to climate change has followed in the academic and scientific debate and examines its effects on wellbeing. The recent recognition of vulnerability as a social construction has shifted the focus of the analysis to the dimension of adaptive capacity, restoring a political economy significance to the study of vulnerability. The social origin of vulnerability is related to the presence of structural inequalities, rooted in structural economic and political relationships and reinforced by historical cultural values and praxes. |
In this study, we investigate the determinants of social integration of Syrian refugees and the impact of social integration on refugees’ decision to stay in Germany, using the 2016 IAB-BAMF-SOEP Refugee Survey. Our econometric strategy is based on the estimation of a simultaneous equation model for social integration, economic integration, and the decision to stay, handling endogeneity issues through an instrumental variables strategy. Our first contribution is to show that economic integration has an impact on social integration for low- and medium-educated refugees only. |
