Marginal resection and adjuvant strontium plesiotherapy in the management of feline eyelid malignant peripheral nerve sheath tumours: two cases

Case series summary Two cats with a marginally resected eyelid malignant peripheral nerve sheath tumour were treated with adjuvant strontium plesiotherapy a few weeks after surgery. The dose applied in both cases was 200 Gy to the surface, in five fractions, on a Monday–Wednesday–Friday basis. The treatment aimed to achieve a clinical margin of approximately 1 cm around the surgical scar and multiple application fields were required to cover such an area. Local recurrence was not seen in either case after 1330 and 645 days, respectively. Relevance and novel information The majority of periocular malignant peripheral nerve sheath tumours reported in the literature recur after surgery. In the two cases described in this report the combination of surgery and adjuvant plesiotherapy has been able to provide good local control with minimal toxicity. This multimodal approach could be considered as an alternative to aggressive surgery such as enucleation or exenteration

Frequentist versus Bayesian analyses: Cross-correlation as an (approximate) sufficient statistic for LIGO-Virgo stochastic background searches

Sufficient statistics are combinations of data in terms of which the likelihood function can be rewritten without loss of information. Depending on the data volume reduction, the use of sufficient statistics as a preliminary step in a Bayesian analysis can lead to significant increases in efficiency when sampling from posterior distributions of model parameters. Here we show that the frequency integrand of the cross-correlation statistic and its variance are approximate sufficient statistics for ground-based searches for stochastic gravitational-wave backgrounds. The sufficient statistics are approximate because one works in the weak-signal approximation and uses measured estimates of the auto-correlated power in each detector. Using analytic and numerical calculations, we prove that LIGO-Virgo's hybrid frequentist-Bayesian parameter estimation analysis is equivalent to a fully Bayesian analysis. This work closes a gap in the LIGO-Virgo literature, and suggests directions for additional searches.Comment: 17 pages, 5 figure

RPNet: an End-to-End Network for Relative Camera Pose Estimation

This paper addresses the task of relative camera pose estimation from raw image pixels, by means of deep neural networks. The proposed RPNet network takes pairs of images as input and directly infers the relative poses, without the need of camera intrinsic/extrinsic. While state-of-the-art systems based on SIFT + RANSAC, are able to recover the translation vector only up to scale, RPNet is trained to produce the full translation vector, in an end-to-end way. Experimental results on the Cambridge Landmark dataset show very promising results regarding the recovery of the full translation vector. They also show that RPNet produces more accurate and more stable results than traditional approaches, especially for hard images (repetitive textures, textureless images, etc). To the best of our knowledge, RPNet is the first attempt to recover full translation vectors in relative pose estimation

Content-Based Video Retrieval in Historical Collections of the German Broadcasting Archive

The German Broadcasting Archive (DRA) maintains the cultural heritage of radio and television broadcasts of the former German Democratic Republic (GDR). The uniqueness and importance of the video material stimulates a large scientific interest in the video content. In this paper, we present an automatic video analysis and retrieval system for searching in historical collections of GDR television recordings. It consists of video analysis algorithms for shot boundary detection, concept classification, person recognition, text recognition and similarity search. The performance of the system is evaluated from a technical and an archival perspective on 2,500 hours of GDR television recordings.Comment: TPDL 2016, Hannover, Germany. Final version is available at Springer via DO

Los Eucaliptos en las tierras altas de Angola, su papel social durante el conflicto armado y en el desarrollo de las comunidades rurales y urbanas

Las tierras altas de Angola han tenido un complicado desarrollo histórico desde que fueron colonizadas a inicios del siglo XX. Este proceso histórico también ha afectado a los bosques naturales y las plantaciones de eucaliptos que se crearon durante los años 60 y 70. El uso de estas plantaciones, inicialmente planificadas como suministro de combustible y materias primas para la industria colonial, se vio truncado con la independencia y los posteriores avatares políticomilitares. En la nueva situación de inseguridad en el medio rural, se convirtieron en la principal fuente de combustible para la creciente población urbana que huía del campo. Actualmente, los polígonos forestales sobrevivientes pueden ser utilizados en la rehabilitación de esta zona del país. El objetivo de este trabajo de investigación es conocer el proceso histórico de uso y gestión de estas plantaciones su papel social en este proceso y la situación en la que se encuentran actualmente._________________________________The Angolan highlands were involved in a complicated historical process since the beginning of colonization in the early 1900´s. The process also affected the natural forest and eucalyptus plantations that were implanted in the sixties and seventies. Its primary planning uses were for fuel wood and timber supply to the colonial industries. The forest uses changed with the independence and the later war conflicts. The insecurity in the rural areas caused a strong rural peasant migration to the more secure cities. Forest plantation close to cities became the main fuel wood supply for the growing urban population. Currently, some forest plantations remain in the less accessible areas and can be use for the rehabilitation of the region. The main objective of the research was to increase the knowledge concern the eucalyptus forests uses and management during the historical process, its social importance during the war time and the state of the forests in present days