cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Public Perception of Climate Change and the New Climate Dice
Creators: name: Hansen, James
name: Sato, Makiko
name: Ruedy, Reto
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: "Climate dice", describing the chance of unusually warm or cool seasons relative to climatology, have become progressively "loaded" in the past 30 years, coincident with rapid global warming. The distribution of seasonal mean temperature anomalies has shifted toward higher temperatures and the range of anomalies has increased. An important change is the emergence of a category of summertime extremely hot outliers, more than three standard deviations (3σ) warmer than climatology. This hot extreme, which covered much less than 1% of Earth's surface in the period of climatology, now typically covers about 10% of the land area. It follows that we can state, with a high degree of confidence, that extreme anomalies such as those in Texas and Oklahoma in 2011 and Moscow in 2010 were a consequence of global warming, because their likelihood in the absence of global warming was exceedingly small. We discuss practical implications of this substantial, growing, climate change.
description: 19 pages, 12 figures; submitted to Proceedings of the National Academy of Sciences
Persistent object tracking with randomized forests
Creators: name: Klinger, Tobias
name: Muhle, Daniel
Publisher: name: Göttingen : Copernicus GmbH
Year: 2012
Subjects: subject: Learning
subject: Detection
subject: Decision Support
subject: Tracking
subject: Real-time
subject: Video
subject: trees
subject: recognition
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Our work addresses the problem of long-term visual people tracking in complex environments. Tracking a varying number of objects entails the problem of associating detected objects to tracked targets. To overcome the data association problem, we apply a Tracking-by-Detection strategy that uses Randomized Forests as a classifier together with a Kalman filter. Randomized Forests build a strong classifier for multi-class problems through aggregating simple decision trees. Due to their modular setup, Randomized Forests can be built incrementally, which makes them useful for unsupervised learning of object features in real-time. New training samples can be incorporated on the fly, while not drifting away from previously learnt features. To support further analysis of the automatically generated trajectories, we annotate them with quality metrics based on the association confidence. To build the metrics we analyse the confidence values that derive from the Randomized Forests and the similarity of detected and tracked objects. We evaluate the performance of the overall approach with respect to available reference data of people crossing the scene.
[Segl tilhørende slekten Steen]
Creators: name: (:Unas)
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet i purpur et kamskjell.
description: Blasonering av hjelmtegnet: På kronet hjelm to vesselhorn.
description: Fram til 2023 var seglet feilaktig tillagt Esten Steen, sogneprest i Trondenes i Troms. Seglet er identisk med familien Steen fra Hedmark. Det finnes i et brev sendt til Christopher Hammer (udatert).
description: Film: F II 2764
Potential evaluation of different types of images and their combination for the classification of gis objects cropland and grassland
Creators: name: Recio, J. A.
name: Helmholz, Petra
name: Müller, S.
Publisher: name: Göttingen : Copernicus GmbH
Year: 2011
Subjects: subject: Agriculture
subject: Classification
subject: Multitemporal
subject: Aerial
subject: Satellite
subject: Orthoimage
subject: Resolution
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In many publications the performance of different classification algorithms regarding to agricultural classes is evaluated. In contrast, this paper focuses on the potential of different imagery for the classification of the two most frequent classes: cropland and grassland. For our experiments three categories of imagery, high resolution aerial images, high resolution RapidEye satellite images and medium resolution Disaster Monitoring Constellation (DMC) satellite images are examined. An object-based image classification, as one of the most reliable methods for the automatic updating and evaluation of landuse geospatial databases, is chosen. The object boundaries are taken from a GIS database, each object is described by means of a set of image based features. Spectral, textural and structural (semivariogram derived) features are extracted from images of different dates and sensors. During classification a supervised decision trees generating algorithm is applied. To evaluate the potential of the different images, all possible combinations of the available image data are tested during classification. The results show that the best performance of landuse classification is based on RapidEye data (overall accuracy of 90%), obtaining slightly accuracy increases when this imagery is combined with additional image data (overall accuracy of 92%).
Supplementary document for Tunable topological edge states based on anomalous scattering - 7348234.pdf
Creators: name: Yang, Chengxi
name: Li, Jianfei
name: Liu, Jialin
name: Yao, Jingfeng
name: Wang, Ying
name: Zhou, Zhongxiang
name: Yuan, Chengxun
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Photonics, Optoelectronics and Optical Communications

description: This supplemental document is intended to elaborate on the experimental details and parameter settings that would be necessary to reproduce an experiment.
[Segl tilhørende Jens Henriksen Stoltenberg]
Creators: name: Stoltenberg, Jens Henriksen
Publisher: name: Unknown
Year: 0

description: Monogramsegl: Bokstavene J H S.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Land use classification with high-resolution satellite radar for estimating the impacts of land use change on the quality of ecosystem services
Creators: name: Bargiel, Damian
name: Herrmann, Sylvia
name: Lohmann, P.
name: Sörgel, Uwe
Publisher: name: Göttingen : Copernicus GmbH
Year: 2010
Subjects: subject: Ecosystem
subject: Land Use
subject: Classification
subject: Radar
subject: Multi-temporal
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Ecosystems provide several services for human well-being. The quality of these ecosystem services is among others affected by agriculture, the main land user in Europe. Thus, it is essential to provide information about land use in agricultural areas. In this research, land use classification of agricultural areas is carried out based on high-resolution Spotlight TerraSAR-X images (TSX-images) of two different polarisations (HH and VV). A stack of several radar images taken during the vegetation season is used for multi-temporal classification of land cover. The typical phenology of agricultural vegetation types and their individual phenological development during the year cause differences in the backscatter of the radar signal over time. Two different study areas are investigated, one in the North East of the city of Hannover, Germany called "Fuhrberger Feld" and one in the "Gorajec area" in the very South East of Poland. These two areas represent extremely diverse European regions with regard to agro-technological level, population density, cultivation form as well as geological and geomorphological conditions. Thereby, the radar signal backscatter for different regions is tested. Preliminary results show significant differences in the backscatter of crop types in SAR data of about 3 m, especially for grasslands, grain and broad-leaved crops. Furthermore the VV polarised radar signal has clearly lower backscattering for grains during summertime and for grasslands in general than for broad-leaved crops.
[Segl tilhørende PeterFriderich Suhm]
Creators: name: Suhm, PeterFriderich
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Skjoldet kvadrert. I 1. og 4. felt i blått en løve under tre seksoddete stjerner, i 2. og 3. felt i sølv et palmetre på jord. I hjerteskjold en oppreist hest.
description: Blasonering av hjelmtegnet: På kronet hjelm en oppvoksende hest.
description: Film: F II 2767
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Property of the large format digital aerial camera dmc ii
Creators: name: Jacobsen, Karsten
name: Neumann, K.
Publisher: name: Göttingen : Copernicus GmbH
Year: 2012
Subjects: subject: Camera
subject: Calibration
subject: Geometry
subject: Bundle
subject: Distortion
subject: Accuracy
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Z/I Imaging introduced with the DMC II 140, 230 and 250 digital aerial cameras with a very large format CCD for the panchromatic channel. The CCDs have with 140 / 230 / 250 mega pixel a size not available in photogrammetry before. CCDs in general have a very high relative accuracy, but the overall geometry has to be checked as well as the influence of not flat CCDs. A CCD with a size of 96mm x 82mm must have a flatness or knowledge of flatness in the range of 1 mu m if the camera accuracy in the range of 1.3 mu m shall not be influenced. The DMC II cameras have been evaluated with three different flying heights leading to 5cm, 9cm and 15cm or 20cm GSD, crossing flight lines and 60% side lap. The optimal test conditions guaranteed the precise determination of the object coordinates as well as the systematic image errors. All three camera types show only very small systematic image errors, ranging in the root mean square between 0.12 mu m up to 0.3 mu m with extreme values not exceeding 1.6 mu m. The remaining systematic image errors, determined by analysis of the image residuals and not covered by the additional parameters, are negligible. A standard deviation of the object point heights below the GSD, determined at independent check points, even in blocks with just 20% side lap and 60% end lap is standard. Corresponding to the excellent image geometry the object point coordinates are only slightly influenced by the self calibration. For all DMCII types the handling of image models for data acquisition must not be supported by an improvement of the image coordinates by the determined systematic image errors. Such an improvement up to now is not standard for photogrammetric software packages. The advantage of a single monolithic CCD is obvious. An edge analysis of pan-sharpened DMC II 250 images resulted in factors for the effective resolution below 1.0. The result below 1.0 is only possible by contrast enhancement, but this requires with low image noise, demonstrating the very good radiometric image quality.
S-duality in Twistor Space
Creators: name: Alexandrov, Sergei
name: Pioline, Boris
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In type IIB string compactifications on a Calabi-Yau threefold, the hypermultiplet moduli space $M_H$ must carry an isometric action of the modular group SL(2,Z), inherited from the S-duality symmetry of type IIB string theory in ten dimensions. We investigate how this modular symmetry is realized at the level of the twistor space of $M_H$, and construct a general class of SL(2,Z)-invariant quaternion-Kahler metrics with two commuting isometries, parametrized by a suitably covariant family of holomorphic transition functions. This family should include $M_H$ corrected by D3-D1-D(-1)-instantons (with fivebrane corrections ignored) and, after taking a suitable rigid limit, the Coulomb branch of five-dimensional N=2 gauge theories compactified on a torus, including monopole string instantons. These results allow us to considerably simplify the derivation of the mirror map between type IIA and IIB fields in the sector where only D1-D(-1)-instantons are retained.
description: 29 pages, 1 figure
[Segl tilhørende Bernt Ancher Sverdrup]
Creators: name: Sverdrup, Bernt Ancher
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Skjoldet delt i blått og sølv. I 1. felt tre oppvoksende roser med stilker og blad, i 2. felt en tredelt busk med blad.
description: Blasonering av hjelmtegnet: På hjelmen en harniskkledt arm holdende en rose med stilk og blad.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Matching cartographic objects in spatial databases
Creators: name: Mantel, Daniela
name: Lipeck, Udo
Publisher: name: London : International Society for Photogrammetry and Remote Sensing
Year: 2004
Subjects: subject: Federated databases
subject: Integration
subject: Matching algorithms
subject: Resolution
subject: Graphical user interfaces
subject: Optical resolving power
subject: Semantics
subject: Cartographic objects
subject: Different resolutions
subject: Federated Databases
subject: Linked representation
subject: Matching algorithm
subject: Multi resolutions
subject: Real-world objects
subject: Semantic classification
subject: Database systems
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Nowadays cartographic objects of different resolutions are hold in different coexisting databases. This implies an extensive amount of work for updating an object in all resolutions. One way to reduce this is to build a multi-resolution database which holds and links different representations of the real-world objects and allows to automatically pass updates to all linked representations (requiring algorithms for propagation of updates). In order to ensure the autonomy of applications on the local databases, we propose the architecture of a federated database for such a multi-resolution database. A main requirement for setting up a multi-resolution database is to "identify" the different representations of real-world objects. Therefore we propose a multistage procedure as follows: - Semantic classification: Identify the sets of objects to compare with one another - Compute geometrically possible matchings within these classes - Postprocessing: Automatically select correct matchings from the set of possible matchings by applying prepared rules - Manual select correct matchings for the remaining possible matchings, which were not automatically detected as correct or incorrect We present a framework for the needed semantic classification, a concept for rule-based selection as well as an algorithm to compute possible matchings. We have enhanced the formerly known buffer growing algorithm for computation of possible matchings and implemented it in PL/SQL for use in spatial databases based on Oracle9i (with the spatial data cartridge). The enclosing object matching process is supported by a graphical user interface utilizing stored database procedures for the mentioned steps and rules. © 2004 International Society for Photogrammetry and Remote Sensing. All rights reserved.
Long-range crystalline nature of the skyrmion lattice in MnSi
Creators: name: Adams, T.
name: Mühlbauer, S.
name: Pfleiderer, C.
name: Jonietz, F.
name: Bauer, A.
name: Neubauer, A.
name: Georgii, R.
name: Böni, P.
name: Keiderling, U.
name: Everschor, K.
name: Garst, M.
name: Rosch, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report small angle neutron scattering of the skyrmion lattice in MnSi using an experimental set-up that minimizes the effects of demagnetizing fields and double scattering. Under these conditions the skyrmion lattice displays resolution-limited Gaussian rocking scans that correspond to a magnetic correlation length in excess of several hundred μm. This is consistent with exceptionally well-defined long-range order. We further establish the existence of higher-order scattering, discriminating parasitic double-scattering with Renninger scans. The field and temperature dependence of the higher-order scattering arises from an interference effect. It is characteristic for the long-range crystalline nature of the skyrmion lattice as shown by simple mean field calculations.
description: 4 pages
Hierarchical higher order crf for the classification of airborne lidar point clouds in urban areas
Creators: name: Niemeyer, Joachim
name: Rottensteiner, Franz
name: Sörgel, Uwe
name: Heipke, Christian
Publisher: name: Göttingen : Copernicus GmbH
Year: 2016
Subjects: subject: Classification
subject: Contextual
subject: Higher Order Random Fields
subject: Lidar
subject: Point Cloud
subject: Urban
subject: Optical radar
subject: Random processes
subject: Remote sensing
subject: Semantics
subject: Classification results
subject: Conditional random field
subject: Contextual feature
subject: Hierarchical approach
subject: Point cloud
subject: Random fields
subject: Classification (of information)
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: We propose a novel hierarchical approach for the classification of airborne 3D lidar points. Spatial and semantic context is incorporated via a two-layer Conditional Random Field (CRF). The first layer operates on a point level and utilises higher order cliques. Segments are generated from the labelling obtained in this way. They are the entities of the second layer, which incorporates larger scale context. The classification result of the segments is introduced as an energy term for the next iteration of the point-based layer. This framework iterates and mutually propagates context to improve the classification results. Potentially wrong decisions can be revised at later stages. The output is a labelled point cloud as well as segments roughly corresponding to object instances. Moreover, we present two new contextual features for the segment classification: the distance and the orientation of a segment with respect to the closest road. It is shown that the classification benefits from these features. In our experiments the hierarchical framework improve the overall accuracies by 2.3% on a point-based level and by 3.0% on a segment-based level, respectively, compared to a purely point-based classification.
[Segl tilhørende Frederik Rantzau]
Creators: name: Rantzau, Frederik
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Skjoldet kløvd i rødt og sølv.
description: Blasonering av hjelmtegnet: På kronet hjelm to vesselhorn. På hver side av hornene bokstavene F R.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Feature descriptor by convolution and pooling autoencoders
Creators: name: Chen, Lin
name: Rottensteiner, Franz
name: Heipke, Christian
Publisher: name: Göttingen : Copernicus GmbH
Year: 2015
Subjects: subject: Autoencoder
subject: Descriptor evaluation
subject: Image matching
subject: Learning descriptor
subject: Benchmarking
subject: Auto encoders
subject: Benchmark data
subject: Descriptor matching
subject: Descriptors
subject: Feature based matching
subject: Feature descriptors
subject: Pooling
subject: Representation learning
subject: Learning systems
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: In this paper we present several descriptors for feature-based matching based on autoencoders, and we evaluate the performance of these descriptors. In a training phase, we learn autoencoders from image patches extracted in local windows surrounding key points determined by the Difference of Gaussian extractor. In the matching phase, we construct key point descriptors based on the learned autoencoders, and we use these descriptors as the basis for local keypoint descriptor matching. Three types of descriptors based on autoencoders are presented. To evaluate the performance of these descriptors, recall and 1-precision curves are generated for different kinds of transformations, e.g. zoom and rotation, viewpoint change, using a standard benchmark data set. We compare the performance of these descriptors with the one achieved for SIFT. Early results presented in this paper show that, whereas SIFT in general performs better than the new descriptors, the descriptors based on autoencoders show some potential for feature based matching.
Multitemporal crop type classification using conditional random fields and rapideye data
Creators: name: Hoberg, Thorsten
name: Müller, Sören
Publisher: name: Göttingen : Copernicus GmbH
Year: 2011
Subjects: subject: Crop
subject: Agriculture
subject: Classification
subject: Multitemporal
subject: Satellite
subject: imagery
subject: area
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The task of crop type classification with multitemporal imagery is nowadays often done applying classifiers that are originally developed for single images like support vector machines (SVM). These approaches do not model temporal dependencies in an explicit way. Existing approaches that make use of temporal dependencies are in most cases quite simple and based on rules. Approaches that integrate temporal dependencies to statistical models are very rare and at an early stage of development. Here our approach CRFmulti, based on conditional random fields (CRF), should make a contribution. Conditional random fields consider context knowledge among neighboring primitives in the same way as Markov random fields (MRF) do. Furthermore conditional random fields handle the feature vectors of the neighboring primitives and not only the class labels. Additional to taking spatial context into account, we present an approach for multitemporal data processing where a temporal association potential has been integrated to the common CRF approach to model temporal dependencies. The classification works on pixel-level using spectral image features, whereas all available single images are taken separately. For our experiments a high resolution RapidEye satellite data set of 2010 consisting of 4 images made during the whole vegetation period from April to October is taken. Six crop type categories are distinguished, namely grassland, corn, winter crop, rapeseed, root crops and other crops. To evaluate the potential of the new conditional random field approach the classification result is compared to a manual reference on pixel-and on object-level. Additional a SVM approach is applied under the same conditions and should serve as a benchmark.
[Segl tilhørende Niels Riiber]
Creators: name: Riiber, Niels
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet et løvtre mellom to seksoddete stjerner.
description: Blasonering av hjelmtegnet: Utydelig hjelmtegn.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Chirality of tensor perturbations for complex values of the Immirzi parameter
Creators: name: Bethke, Laura
name: Magueijo, Joao
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we generalise previous work on tensor perturbations in a de Sitter background in terms of Ashtekar variables to cover all complex values of the Immirzi parameter gamma (previous work was restricted to imaginary gamma). Particular attention is paid to the case of real gamma. Following the same approach as in the imaginary case, we can obtain physical graviton states by invoking reality and torsion free conditions. The Hamiltonian in terms of graviton states has the same form whether gamma has a real part or not; however changes occur for the vacuum energy and fluctuations. Specifically, we observe a gamma dependent chiral asymmetry in the vacuum fluctuations only if gamma has an imaginary part. Ordering prescriptions also change this asymmetry. We thus present a measurable result for CMB polarisation experiments that could shed light on the workings of quantum gravity.
description: 6 pages, 1 figure
[Segl tilhørende J. (?) Riis]
Creators: name: Riis, J. (?)
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet i blått en kårde omslynget av to sl anger og med en fugl sittende på spissen.
description: Blasonering av hjelmtegnet: På hjelmen en fugl (falk?) sittende mellom to vinger.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
[Segl tilhørende Hans Rosing]
Creators: name: Rosing, Hans
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet i blått en rose med stilk omgitt av en krans av rosenstilker med torner og blad.
description: Blasonering av hjelmtegnet: På hjelmen en arm holdende en rose med stilk og blad. På hver side av hjelmtegnet bokstavene H C R.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Multiple-model based verification of japanese road data
Creators: name: Ziems, M.
name: Fujimura, H.
name: Heipke, Christian
name: Rottensteiner, Franz
Publisher: name: Göttingen : Copernicus GmbH
Year: 2010
Subjects: subject: Classification
subject: Databases
subject: Modelling
subject: Orthoimage
subject: Quality
subject: Updating
subject: Classification (of information)
subject: Database systems
subject: Image quality
subject: Maintenance
subject: Models
subject: Transportation
subject: Dempster-Shafer fusion
subject: Incomplete knowledge
subject: Multiple-modeling
subject: Orthoimages
subject: Semi-automatic systems
subject: Statistical properties
subject: Verification results
subject: Roads and streets
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: This paper describes a semi-automatic system for road verification from high resolution orthophotos in an urban context. The system combines several road detection and road verification approaches from current literature to form a more general solution. Each road detection / verification approach is realized as an independent module representing a unique road model and thus a unique strategy. The object-wise verification result of each module is formulated as a binary decision between the classes "correct road" and "incorrect road". These individual decisions are combined by Dempster-Shafer fusion, which provides tools for dealing with uncertain and incomplete knowledge about the statistical properties of the data. For each road detection / verification module a function for confidence is introduced that reflects degree of correspondence of an actual test situation with an optimal situation according to the underlying road model of that module. Experimental results achieved with four different test sites in Japan demonstrate the potential and confirm the reliability of the new system.
[Segl tilhørende Hans Jacob Rosted]
Creators: name: Rosted, Hans Jacob
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet en plog, et fjell og en ubestemmelig gjenstand. Devise: A RASTRIS PER ASPERA AD ROSTRA.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Fake News Source Detection – The State of The Art Survey For Current Problems And Research
Creators: name: Frąszczak, Damian
Publisher: name: figshare
Year: 2021
Subjects: Computer Engineering

description: Online social networks are a popular way of communication between users. Unfortunately, they are increasingly used withmalicious intent. Finding fake news is a crucial way to control the propagation of misinformation in a social network. Thispaper tries to gather are required aspects, problems and methods to provide a handbook of the source detection process.
[Segl tilhørende Henrik Rosted]
Creators: name: Rosted, Henrik
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Skjoldet kløvd med skjoldhode. I 1. felt en æskulapstav, i 2. felt en stubbe med gren og blad. I skjoldhodet et liggende kornnek med sigd.
description: Blasonering av hjelmtegnet: Mglr. hjelm.
description: Merknad: Defekt segl.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
[Segl tilhørende Hermann Ruge]
Creators: name: Ruge, Hermann
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Skjoldet delt i blått og nederst kløvd i sølv og svart. I 1. felt en krone omgitt av en tornekrans, i 2. felt en fremkommende bjørn holdende et sverd, i 3. felt en ugle sittende på en.
description: Blasonering av hjelmtegnet: På hjelmen en mitra mellom to oppvoksende og adosserte bispestaver.
description: Film: F II 2816
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
[Segl tilhørende C.(?) Petersen]
Creators: name: Petersen, C.(?)
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet i blått en havmann holdende en trefork.
description: Blasonering av hjelmtegnet: På hjelmen en flyvende due mellom to vesselhorn.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Suzaku X-ray Imaging of the Extended Lobe in the Giant Radio Galaxy NGC6251 Associated with the Fermi-LAT Source 2FGLJ1629.4+8236
Creators: name: Takeuchi, Y.
name: Kataoka, J.
name: Stawarz, L.
name: Takahashi, Y.
name: Maeda, K.
name: Nakamori, T.
name: Cheung, C. C.
name: Celotti, A.
name: Tanaka, Y.
name: Takahashi, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the results of a Suzaku X-ray imaging study of NGC6251, a nearby giant radio galaxy with intermediate FR I/II radio properties. Our pointing direction was centered on the gamma -ray emission peak recently discovered with Fermi-LAT around the position of the north-west radio lobe 15 arcmin offset from the nucleus. After subtracting two "off-source" pointings adjacent to the radio lobe, and removing possible contaminants in the XIS field of view, we found significant residual X-ray emission most likely diffuse in nature. The spectrum of the excess X-ray emission is well fit by a power law with photon index Γ= 1.90 +- 0.15 and a 0.5 - 8 keV flux of 4 x 10^{-13} erg cm^{-2} s^{-1}. We interpret this diffuse X-ray emission component as being due to inverse-Compton up-scattering of the cosmic microwave background photons by ultrarelativistic electrons within the lobe, with only a minor contribution from the beamed emission of the large-scale jet. Utilizing archival radio data for the source, we demonstrate by means of broad-band spectral modeling that the -ray flux of the Fermi-LAT source 2FGL J1629.4+8236 may well be accounted for by the high-energy tail of the inverse-Compton continuum of the lobe. Thus, this claimed association of gamma-rays from the north-west lobe of NGC6251, together with the recent Fermi-LAT imaging of the extended lobes of Centaurus A, indicates that particles may be efficiently (re-)accelerated up to ultrarelativistic energies within extended radio lobes of nearby radio galaxies in general.
description: 19 pages, 4 figures, accepted for publication in the ApJ
[Segl tilhørende Thor Olsen]
Creators: name: Olsen, Thor
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Ikke skjold. I seglet en opprett nøkkel fulgt av bokstavene T O.
description: Merknad: Årstallet 1567 inngravert på signetets håndtak.
description: Film: F II 2756
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Multitemporal interpretation of remote sensing data
Creators: name: Müller, Sönke
name: Mota, Guilherme Lucio Abelha
name: Liedtke, Claus-Eberhard
Publisher: name: London : International Society for Photogrammetry and Remote Sensing
Year: 2004
Subjects: subject: Aerial
subject: Classification
subject: Knowledge base
subject: Land use
subject: Multitemporal
subject: Urban
subject: Antennas
subject: Classification (of information)
subject: Image enhancement
subject: Knowledge based systems
subject: Knowledge representation
subject: Quality control
subject: Semantics
subject: Automated classification
subject: Automated interpretation
subject: Automatic image analysis
subject: Multi-temporal
subject: State transition diagrams
subject: Statistical classification
subject: Remote sensing
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The automated interpretation of aerial image data is a task with increasing significance for several applications, e.g. quality control and automatic updating of GIS data, automatic land use change detection, measurement of sealed areas for public authority uses, monitoring of land erosion etc. The use of additional sensors could improve the performance of the automated classification; however, because of additional costs or simple unavailability of data, this approach should be avoided. One possibility to stabilize an automatic image analysis is using remote sensing data of the same region of different dates that is often existing. This paper presents a method how a monotemporal knowledge representation can be expanded by a temporal component to take advantage of previous classifications of the same scene and knowledge about the time dependency of the object classes. The present approach proposes the combination of a semantic network, representing the generic description of the scene, and a state transition diagram, modeling the possible state transitions for each one of the classes of interest. The probabilities of the state transition diagram are introduced as a priori knowledge in a statistical classification procedure. Experimental results from a series of three aerial images from 1983 up to 2001 of a suburban region near Hannover are shown in order to illustrate the potential of the proposed multitemporal approach. © 2004 International Society for Photogrammetry and Remote Sensing. All rights reserved.
[Segl tilhørende Henrik Opdal]
Creators: name: Opdal, Henrik
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet et Agnus dei (lam med fane over høyre forben).
description: Blasonering av hjelmtegnet: På hjelmen en seksoddet stjerne, deromkring bokstavene H A (?).
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
[Segl tilhørende Lauritz Halmsted]
Creators: name: Halmsted, Lauritz
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: Utydelig skjold.
description: Blasonering av skjoldholdere: En sittende mann med glorie, holdende et sverd i høyre hånd og en vekt i venstre hånd.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices
Creators: name: Pedersen, K. G. L.
name: Andersen, B. M.
name: Syljuasen, O. F.
name: Bruun, G. M.
name: Sorensen, A. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We suggest a simple experimental method for probing antiferromagnetic spin correlations of two-component Fermi gases in optical lattices. The method relies on a spin selective Raman transition to excite atoms of one spin species to their first excited vibrational mode where the tunneling is large. The resulting difference in the tunneling dynamics of the two spin species can then be exploited, to reveal the spin correlations by measuring the number of doubly occupied lattice sites at a later time. We perform quantum Monte Carlo simulations of the spin system and solve the optical lattice dynamics numerically to show how the timed probe can be used to identify antiferromagnetic spin correlations in optical lattices.
description: 5 pages, 5 figures
Automatic measurement of sewer man-holes in large scale aerial images
Creators: name: Pollak, Bernd
name: Jacobsen, Karsten
Publisher: name: [Wechselnde Verlagsorte] : ISPRS
Year: 2000
Subjects: subject: Aerial image
subject: Automatic measurement
subject: Coal mining
subject: Digital photogrammetry
subject: Antennas
subject: Coal mines
subject: Cost reduction
subject: Data handling
subject: Photogrammetry
subject: Remote sensing
subject: Sewers
subject: Aerial images
subject: Automatic measurements
subject: Full resolutions
subject: Geometric changes
subject: Horizontal displacements
subject: Manual measurements
subject: Image processing
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The geometric changes of the surface (subsidence and horizontal displacement) caused by coal mining can be determined by photogrammetry with a sufficient accuracy. As long time stable targets sewer manholes can be used. They can be identified in large scale aerial images without additional effort for targeting. They also can be measured semi-automatic in digital images. Especially for periodically performed photogrammetric evaluations of the same area these aspects can lead to a significant cost reduction against a manual measurement. The program DPLX developed by the University of Hannover resulted in a precision and completeness of the automatic image point determination similar to those by manual measurement with analytical plotters. Digital images with the full resolution can be handled also on standard PC's. © 2000 International Society for Photogrammetry and Remote Sensing. All rights reserved.
Entanglement Detection Using Majorization Uncertainty Bounds
Creators: name: Partovi, M. Hossein
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement detection criteria are developed within the framework of the majorization formulation of uncertainty. The primary results are two theorems asserting linear and nonlinear separability criteria based on majorization relations, the violation of which would imply entanglement. Corollaries to these theorems yield infinite sets of scalar entanglement detection criteria based on quasi-entropic measures of disorder. Examples are analyzed to probe the efficacy of the derived criteria in detecting the entanglement of bipartite Werner states. Characteristics of the majorization relation as a comparator of disorder uniquely suited to information-theoretical applications are emphasized throughout.
description: 10 pages, 1 figure
[Segl tilhørende Hans Helljesson]
Creators: name: Helljesson, Hans
Publisher: name: Unknown
Year: 0

description: Monogramsegl: Bokstaven H.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Optimisation of the calibration process of a k-tls based multi-sensor-system by genetic algorithms
Creators: name: Hartmann, J.
name: Von Gösseln, I.
name: Schild, N.
name: Dorndorf, A.
name: Paffenholz, J.-A.
name: Neumann, I.
Publisher: name: Göttingen : Copernicus GmbH
Year: 2019
Subjects: subject: Genetic Algorithm
subject: Kinematic Laser Scanning
subject: Optimisation
subject: Birefringence
subject: Calibration
subject: Genetic algorithms
subject: Geometry
subject: Kinematics
subject: Laser applications
subject: Object detection
subject: Scanning
subject: Seebeck effect
subject: Steel beams and girders
subject: Uncertainty analysis
subject: (Geo-)referencing
subject: Industrial production
subject: Laser scanning
subject: Optimisations
subject: Position and orientations
subject: Qualitative assessments
subject: Terrestrial laser scanning
subject: Uncertainty propagation
subject: Surveying instruments
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In recent years, the requirements in the industrial production of elongated objects, e.g., aircraft, have been increased. An essential aspect of the production process is the 3D object detection as well as the qualitative assessment of the captured data. On the one hand high accuracy requirements with a 3D standard deviation of σ3D Combining double low line 1 mm have to be fulfilled, on the other hand an efficient 3D object capturing is needed. In terms of efficiency, kinematic terrestrial laser scanning (k-TLS) has proven its strength in the recent years. It can be seen as an alternative and is even more powerful than to the well established static terrestrial laser scanning (s-TLS). In order to perform a high accurate 3D object capturing with k-TLS, the 3D object capturing of the initial sensor, the (geo-)referencing of the mobile platform, the synchronisation of all sensors and the system calibration, which means the determination of six extrinsic parameters have to be performed with suitable accuracy. Within this contribution we focus on the system calibration. Therefore an approach based on known reference geometries, here planes, is used (Strübing and Neumann, 2013). As a result, the lever arm and boresight angles are determined. Hereby the number as well as the position and orientation of the reference geometries is of importance. Therefore, an optimal arrangement has to be found. Here a sensitive analysis based on uncertainty propagation is used. A selective search of an optimised arrangement is carried out by a genetic algorithm. Within some examples we demonstrate some theoretical aspects and how an optimisation of the reference geometry arrangement can be achieved.
Influence of synchrotron self-absorption on the 21cm experiments
Creators: name: Zheng, Qian
name: Wu, Xiang-Ping
name: Gu, Jun-Hua
name: Wang, Jingying
name: Xu, Haiguang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: Cosmology and Extragalactic Astrophysics

description: Presence of spectral curvature due to synchrotron self-absorption (SSA) of extragalactic radio sources may break down the spectral smoothness feature-the premise that bright radio foreground can be successfully removed in the 21cm experiments of searching for the epoch of reionization (EOR).We present a quantitative estimate of the effect on the measurement of the angular power spectrum of the low-frequency sky,incorporating a phenomenological model,characterized by the fraction of radio sources with turnover frequencies in 100-1000MHz range and a broken power law for the spectral transition around turnover frequencies nu_m,into the simulated radio sources over a small sky area of 10x10 deg^2.We compare statistically the changes in their residual maps with/without inclusion of the SSA after the bright sources of S_150MHz>=100mJy are excised and the best-fitted polynomials in frequency domain on each pixel are further subtracted.It has been shown that the effect of SSA on the detection of EOR depends sensitively on the spectral profiles of radio sources around the turnover frequencies: A hard transition model described by the broken power law with the turnover of spectral index at nu_m would leave pronounced imprints on the residual background and cause serious confusion with the EOR signal.However,the spectral signatures on the angular power spectrum of extragalactic foreground generated by a soft transition model,in which the rise and fall power laws of spectral distribution around nu_m are connected through a smooth transition spanning >=200 MHz in characteristic width,can be fitted and consequently subtracted by employment of polynomials to an acceptable degree(delta T<1mK).As this latter scenario seems to be favored by both theoretical expectation and radio spectral observations,we conclude that the influence of SSA on the 21cm experiments is probably very minor.
description: 17 pages, 10 figures, accepted for publication in MNRAS
[Segl tilhørende Poul Friderik Heltzen]
Creators: name: Heltzen, Poul Friderik
Publisher: name: Unknown
Year: 0

description: Blasonering av skjoldet: I skjoldet i gull en svart sparre fulgt av tre (2.1) røde hjerter.
description: Blasonering av hjelmtegnet: På hjelmen to svarte vinger.
description: Beskrivelse av segl og andre opplysninger er hentet fra boka "Segl i Universitetsbiblioteket i Trondheim" av Harald Nissen og Monica Aase utgitt 1990.
Trans-Alfvenic Motions in the Taurus Molecular Cloud
Creators: name: Heyer, Mark H.
name: Brunt, Christopher M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Magnetically aligned velocity anisotropy over varying physical conditions and environments within the Taurus Molecular Cloud is evaluated from analysis of wide field spectroscopic imaging of 12CO and 13CO J=1-0 emission. Such anisotropy is a result of MHD turbulence in the strong magnetic field regime and provides an indirect measure of the role of magnetic fields upon the gas. Velocity anisotropy aligned with the local, projected mean magnetic field direction is limited to fields with low surface brightness 12CO emission corresponding to regions of low visual extinction and presumably, low gas volume density. The more optically thin 13CO J=1-0 emission shows little evidence for velocity anisotropy. We compare our results with computational simulations with varying degrees of magnetic field strength and Alfvenic Mach numbers. In the diffuse, molecular envelope of the cloud, a strong magnetic field and sub-Alfvenic turbulent motions are inferred. Super-Alfvenic motions are present within the high column density filaments of the Taurus cloud. From this trans-Alfvenic flow, we constrain the scaling exponent, kappa, of the magnetic field density relation (B ~ n^kappa) to be near zero as expected for ambipolar diffusion or material loading of magnetic flux tubes.
description: submitted to MNRAS