cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GETNET: A General End-to-end Two-dimensional CNN Framework for Hyperspectral Image Change Detection
Creators: name: Wang, Qi
name: Yuan, Zhenghang
name: Du, Qian
name: Li, Xuelong
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Change detection (CD) is an important application of remote sensing, which provides timely change information about large-scale Earth surface. With the emergence of hyperspectral imagery, CD technology has been greatly promoted, as hyperspectral data with the highspectral resolution are capable of detecting finer changes than using the traditional multispectral imagery. Nevertheless, the high dimension of hyperspectral data makes it difficult to implement traditional CD algorithms. Besides, endmember abundance information at subpixel level is often not fully utilized. In order to better handle high dimension problem and explore abundance information, this paper presents a General End-to-end Two-dimensional CNN (GETNET) framework for hyperspectral image change detection (HSI-CD). The main contributions of this work are threefold: 1) Mixed-affinity matrix that integrates subpixel representation is introduced to mine more cross-channel gradient features and fuse multi-source information; 2) 2-D CNN is designed to learn the discriminative features effectively from multi-source data at a higher level and enhance the generalization ability of the proposed CD algorithm; 3) A new HSI-CD data set is designed for the objective comparison of different methods. Experimental results on real hyperspectral data sets demonstrate the proposed method outperforms most of the state-of-the-arts.
Decentralized Technologies for AI Hubs
Creators: name: Blythman, Richard
name: Arshath, Mohamed
name: Vivona, Salvatore
name: Smékal, Jakub
name: Shaji, Hithesh
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: AI requires heavy amounts of storage and compute with assets that are commonly stored in AI Hubs. AI Hubs have contributed significantly to the democratization of AI. However, existing implementations are associated with certain benefits and limitations that stem from the underlying infrastructure and governance systems with which they are built. These limitations include high costs, lack of monetization and reward, lack of control and difficulty of reproducibility. In the current work, we explore the potential of decentralized technologies - such as Web3 wallets, peer-to-peer marketplaces, storage and compute, and DAOs - to address some of these issues. We suggest that these infrastructural components can be used in combination in the design and construction of decentralized AI Hubs.
description: arXiv admin note: substantial text overlap with arXiv:2210.16651
Oecomys speciosus
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oecomys
Oecomys speciosus

description: Oecomys speciosus (J. A. Allen and Chapman, 1893). Bull. Am. Mus. Nat. Hist., 5:212. TYPE LOCALITY: Trinidad, Princes Town. DISTRIBUTION: Savannahs of NE Colombia, C and N Venezuela, and Trinidad. SYNONYMS: caicarae, trichurus.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 716, DOI: 10.5281/zenodo.7353098
Trignometry Without Geometry
Creators: name: Gresham, John
name: Wyatt, Bryant
name: Crawford, Jesse
Publisher: name: arXiv
Year: 2019
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: 26-01

description: The development of the trigonometric functions in introductory texts usually follows geometric constructions using right triangles or the unit circle. While these methods are satisfactory at the elementary level, advanced mathematics demands a more rigorous approach. Our purpose here is to revisit elementary trigonometry from an entirely analytic perspective. We will give a comprehensive treatment of the sine and cosine functions and will show how to derive the familiar theorems of trigonometry without reference to geometric definitions or constructions.
description: title page followed by 20 numbered pages
Test experiments with distributed acoustic sensing and hydrophone arrays for locating underwater sound sources
Creators: name: Rychen, Jörg
name: Paitz, Patrick
name: Edme, Pascal
name: Smolinski, Krystyna
name: Brackenhoff, Joeri
name: Fichtner, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Whales and dolphins rely on sound for navigation and communication, making them an intriguing subject for studying language evolution. Traditional hydrophone arrays have been used to record their acoustic behavior, but optical fibers have emerged as a promising alternative. This study explores the use of distributed acoustic sensing (DAS), a technique that detects local stress in optical fibers, for underwater sound recording. An experiment was conducted in Lake Zurich, where a fiber-optic cable and a self-made hydrophone array were deployed. A test signal was broadcasted at various locations, and the resulting data was synchronized and consolidated into files. Analysis revealed distinct frequency responses in the DAS channels and provided insights into sound propagation in the lake. Challenges related to cable sensitivity, sample rate, and broadcast fidelity were identified. This dataset serves as a valuable resource for advancing acoustic sensing techniques in underwater environments, especially for studying marine mammal vocal behavior.
description: Data description
Indirect coupling between localized magnetic moments in zero-dimensional graphene nanostructures (quantum dots)
Creators: name: Szałowski, Karol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The indirect Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling between on-site magnetic impurities is studied for two kinds of graphene nanoflakes consisting of approximately 100 carbon atoms, posessing either zigzag or armchair edge. The tight-binding Hamiltonian with Hubbard term is used in non-perturbative calculations of coupling between the impurities placed at the edge of the structure. In general, for zigzag-edged nanoflakes a pronounced coupling robust against charge doping is found, while for armchair-edged structures the interaction is weaker and much more sensitive to charge doping. Also the distance dependence of indirect exchange differs significantly for both edge forms.
description: 2 pages, 2 figures, to appear in Proceedings of CSMAG'13 conference, modified to fit a strict 2 page length limit
The stellar-to-halo mass relation for Local Group galaxies
Creators: name: Brook, C. B.
name: Di Cintio, A.
name: Knebe, A.
name: Gottlöber, S.
name: Hoffman, Y.
name: Yepes, G.
name: Garrison-Kimmel, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We contend that a single power law halo mass distribution is appropriate for direct matching to the stellar masses of observed Local Group dwarf galaxies, allowing the determination of the slope of the stellar mass-halo mass relation for low mass galaxies. Errors in halo masses are well defined as the Poisson noise of simulated local group realisations, which we determine using constrained local universe simulations (CLUES). For the stellar mass range 10$^7$
description: ApJL Accepted version. Comments to cbabrook@gmail.com
An evaluation of the role of community care in meeting the needs of people with multiple sclerosis in Ireland
Creators: name: Maguire, Rebecca
name: King, Jennifer Deane
name: Fahy, Austin
name: Larkin, Aidan
name: COOTE, SUSAN
Publisher: name: University of Limerick
Year: 2022
Subjects: subject: Health sciences
subject: FOS: Health sciences

description: Background: People with MS (PwMS) can experience a number of diverse needs which may be met by community-based services such as those delivered by MS Ireland (MSI), where Community Workers (CWs) provide support to PwMS on an individualised basis. However, while such support may be critical in helping PwMS adapt and cope with the challenges of living with MS, there has been little evaluation of the outcomes and impacts of this service to date. This study aimed to explore the perceived effectiveness and impacts of community work from the perspectives of both PwMS and CWs. Methods: Using stakeholder engagement and public and patient involvement (PPI), two surveys were developed for (1) CWs, and (2) services users of MSI. A series of open and closed questions centred on the effectiveness of community work in meeting twelve distinct categories of needs taken from an adapted framework of rehabili?tation and healthcare needs of PwMS. Both CWs and service users rated the extent to which these various needs were met through community work, as well as describing the mechanisms by which needs were met, and the challenges faced in meeting these needs. Separately, both groups described the perceived impacts of community work using open-text responses. Results: Fifteen CWs and 367 PwMS, 269 (73%) of whom knew their CW, participated. Both groups rated community work positively in meeting the needs for information, emotional/psychological support and coordination of care, with lower perceived capacity for community work to meet needs for employment accommodations, caregiver support and homecare. Mann Whitney U tests did not find any significant difference between groups in the perceived capacity of community work to meet the various needs examined (p>.05). Core mechanisms by which CWs meet needs are by signposting to relevant services, listening, and facilitating peer support. Difficulty accessing external services was the primary challenge identified in meeting needs. Positive impacts of community work included the role that CWs play in fostering confidence and acceptance of MS, and in helping service users overcome the challenges of MS. Conclusion: Results suggest how CWs can help meet the needs of PwMS, while also highlighting the numerous positive impacts that community work has for this group. While it is clear that a number of unmet needs may remain due to a lack of access to other external services, this study shows how community-based services may play an important role in helping PwMS adapt to living with MS.
Time Distance: A Novel Collision Prediction and Path Planning Method
Creators: name: Analooee, Ali
name: Azadi, Shahram
name: Kazemi, Reza
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a new fast algorithm for path planning and a collision prediction framework for two dimensional dynamically changing environments are introduced. The method is called Time Distance (TD) and benefits from the space-time space idea. First, the TD concept is defined as the time interval that must be spent in order for an object to reach another object or a location. Next, TD functions are derived as a function of location, velocity and geometry of objects. To construct the configuration-time space, TD functions in conjunction with another function named "Z-Infinity" are exploited. Finally, an explicit formula for creating the length optimal collision free path is presented. Length optimization in this formula is achieved using a function named "Route Function" which minimizes a cost function. Performance of the path planning algorithm is evaluated in simulations. Comparisons indicate that the algorithm is fast enough and capable to generate length optimal paths as the most effective methods do. Finally, as another usage of the TD functions, a collision prediction framework is presented. This framework consists of an explicit function which is a function of TD functions and calculates the TD of the vehicle with respect to all objects of the environment.
Phen-DC 3 Induces Refolding of Human Telomeric DNA into a Chair-Type Antiparallel G-Quadruplex through Ligand Intercalation
Creators: name: Ghosh, Anirban
name: Trajkovski, Marko
name: Teulade-Fichou, Marie-paule
name: Gabelica, Valérie
name: Plavec, Janez
Publisher: name: arXiv
Year: 2023
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Human telomeric G-quadruplex DNA structures are attractive anticancer drug targets, but the target's polymorphism complicates the drug design: different ligands prefer different folds, and very few complexes have been solved at high resolution. Here we report that Phen-DC3, one of the most prominent G-quadruplex ligands in terms of high binding affinity and selectivity, causes dTAGGG(TTAGGG)3 to completely change its fold in KCl solution from a hybrid-1 to an antiparallel chair-type structure, wherein the ligand intercalates between a two-quartet unit and a pseudo-quartet, thereby ejecting one potassium ion. This unprecedented high-resolution NMR structure shows for the first time a true ligand intercalation into an intramolecular G-quadruplex.
Homotopy Rota-Baxter operators, homotopy $\mathcal{O}$-operators and homotopy post-Lie algebras
Creators: name: Tang, Rong
name: Bai, Chengming
name: Guo, Li
name: Sheng, Yunhe
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B10, 17B56, 17A42, 55P43

description: Rota-Baxter operators, $\mathcal{O}$-operators on Lie algebras and their interconnected pre-Lie and post-Lie algebras are important algebraic structures with applications in mathematical physics. This paper introduces the notions of a homotopy Rota-Baxter operator and a homotopy $\mathcal{O}$-operator on a symmetric graded Lie algebra. Their characterization by Maurer-Cartan elements of suitable differential graded Lie algebras is provided. Through the action of a homotopy $\mathcal{O}$-operator on a symmetric graded Lie algebra, we arrive at the notion of an operator homotopy post-Lie algebra, together with its characterization in terms of Maurer-Cartan elements. A cohomology theory of post-Lie algebras is established, with an application to 2-term skeletal operator homotopy post-Lie algebras.
description: 29 pages
The Effects of Fiscal Policy on the Performance of Commercial Banks in Kenya
Creators: name: Commercial Studies, African Journal of
name: Orodi, Samuel
Publisher: name: figshare
Year: 2022
Subjects: subject: 150202 Financial Econometrics
subject: FOS: Economics and business
subject: 150201 Finance
subject: 150203 Financial Institutions (incl. Banking)

description: Abstract: Fiscal policy refers to the use of government spending and tax policies to influence economic conditions. Fiscal policies have existed for a long time, with major debates between proponents of the Keynesian model and the monetary approach. Fiscal policy can either be contractionary, expansionary, or neutral. This study analyses the literature on the effect of the national budget on banks performance; effect of Taxation on bank performance; and the effect of public expenditure on performance of Banks in Kenya. The literature shows that government expenditure is a good fiscal policy measure in terms of the positive performance of commercial banks however, there is a need to consider the issue of corruption that negatively affects the expenditure controls that are crucial in an effective government approach in terms of the way the authorities ensure effective expenditure programs. Budget surplus and the positive impact on banks’ lending, no direct or clear argument shows the role of budgeting on commercial banks' performance. Taxes also play an important role in developing infrastructures that are crucial for the improved performance of firms. However, gaps exist in literature that needs to explored by further studies. 
Public hearing before Senate Environment Committee and Assembly Environment Committee "to receive testimony from the Department of Environmental Protection and Energy and various invited private and public interest groups and experts concerning the proposed implementation of a low emission vehicle (California car) program in New Jersey"
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 1992

description: Transcript of a hearing held April 9, 1992 before the New Jersey Senate Environment Committee and Assembly Environment Committee to receive testimony from the Department of Environmental Protection and Energy and various invited private and public interest groups and experts concerning the proposed implementation of a low emission vehicle (California car) program in New Jersey, with an appendix of supporting documents.
OpenVSLAM: A Versatile Visual SLAM Framework
Creators: name: Sumikura, Shinya
name: Shibuya, Mikiya
name: Sakurada, Ken
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we introduce OpenVSLAM, a visual SLAM framework with high usability and extensibility. Visual SLAM systems are essential for AR devices, autonomous control of robots and drones, etc. However, conventional open-source visual SLAM frameworks are not appropriately designed as libraries called from third-party programs. To overcome this situation, we have developed a novel visual SLAM framework. This software is designed to be easily used and extended. It incorporates several useful features and functions for research and development.
Oecomys superans Thomas 1911
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oecomys
Oecomys superans

description: Oecomys superans Thomas, 1911. Ann. Mag. Nat. Hist., ser. 8, 8:250. TYPE LOCALITY: Ecuador, Pastaza Prov., Rio Bobonaza, Canelos, 2100 ft. DISTRIBUTION: Lower Andean slopes and foothills of E Colombia, Ecuador, and Peru. SYNONYMS: melleus, paimeri.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 716, DOI: 10.5281/zenodo.7353098
Convolutional Neural Networks with Intermediate Loss for 3D Super-Resolution of CT and MRI Scans
Creators: name: Georgescu, Mariana-Iuliana
name: Ionescu, Radu Tudor
name: Verga, Nicolae
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: CT scanners that are commonly-used in hospitals nowadays produce low-resolution images, up to 512 pixels in size. One pixel in the image corresponds to a one millimeter piece of tissue. In order to accurately segment tumors and make treatment plans, doctors need CT scans of higher resolution. The same problem appears in MRI. In this paper, we propose an approach for the single-image super-resolution of 3D CT or MRI scans. Our method is based on deep convolutional neural networks (CNNs) composed of 10 convolutional layers and an intermediate upscaling layer that is placed after the first 6 convolutional layers. Our first CNN, which increases the resolution on two axes (width and height), is followed by a second CNN, which increases the resolution on the third axis (depth). Different from other methods, we compute the loss with respect to the ground-truth high-resolution output right after the upscaling layer, in addition to computing the loss after the last convolutional layer. The intermediate loss forces our network to produce a better output, closer to the ground-truth. A widely-used approach to obtain sharp results is to add Gaussian blur using a fixed standard deviation. In order to avoid overfitting to a fixed standard deviation, we apply Gaussian smoothing with various standard deviations, unlike other approaches. We evaluate our method in the context of 2D and 3D super-resolution of CT and MRI scans from two databases, comparing it to relevant related works from the literature and baselines based on various interpolation schemes, using 2x and 4x scaling factors. The empirical results show that our approach attains superior results to all other methods. Moreover, our human annotation study reveals that both doctors and regular annotators chose our method in favor of Lanczos interpolation in 97.55% cases for 2x upscaling factor and in 96.69% cases for 4x upscaling factor.
description: Accepted in IEEE Access
An extension of polar duality of toric varieties and its consequences in Mirror Symmetry
Creators: name: Rossi, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J33, 14M25, 53D37

description: The present paper is dedicated to illustrating an extension of polar duality between Fano toric varieties to a more general duality, called \emph{framed} duality, so giving rise to a powerful and unified method of producing mirror partners of hypersurfaces and complete intersections in toric varieties, of any Kodaira dimension. In particular, the class of projective hypersurfaces and their mirror partners are studied in detail. Moreover, many connections with known Landau-Ginzburg mirror models, Homological Mirror Symmetry and Intrinsic Mirror Symmetry, are discussed.
description: Major improvements suggested by the Referee, to whom all my thanks go. Final version to apper in Advances of Theoretical and Mathematical Physics
Oecomys trinitatis
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oecomys
Oecomys trinitatis

description: Oecomys trinitatis (J. A. Allen and Chapman, 1893). Bull. Am. Mus. Nat. Hist., 5:213. TYPE LOCALITY: Trinidad, Princes Town. DISTRIBUTION: Neotropical rainforests from SW Costa Rica to SE Brazil, including Guianas, Trinidad and Tobago; E Andean slopes of WE Colombia to SC Peru. SYNONYMS: bahiensis, catherinae, cinnamomeus, frontalis, fulviventer, helvolus, klagesi, osgoodi, palmarius, splendens, subluteus, tectus, vicencianus.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on pages 716-717, DOI: 10.5281/zenodo.7353098
A variant of K-theory and topological T-duality for Real circle bundles
Creators: name: Gomi, Kiyonori
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Topology (math.AT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics

description: For a space with involutive action, there is a variant of K-theory. Motivated by T-duality in type II orbifold string theory, we establish that a twisted version of the variant enjoys a topological T-duality for Real circle bundles, i.e. circle bundles with real structure.
description: 49 pages, LaTeX 2e
title: Megatrend-Report #05:  Der grüne  Standortwettbewerb
title: Wie eine veränderte Welthandelsordnung und  der Klimawandel die Industriefrage neu stellen
titleType: Subtitle
Creators: name: Holzmann, Sara
name: Krebs, Ruben
name: Petersen, Thieß
name: Posch, Daniel
name: Putzhammer, Fritz
name: Resende Carvalho, Lucas Merlin
name: Wortmann, Marcus
Publisher: name: Bertelsmann Stiftung
Year: 2023
Subjects: Wirtschaftspolitik
Standort
Wettbewerbsfähigkeit
Klimawandel
Klimapolitik
Geopolitik

description: In unserem fünften Megatrend-Report beschäftigen wir uns mit der Frage, wie Deutschland seine Standortattraktivität in Zeiten globaler Krisen und Konflikte erhalten kann. Zwar zeichnet sich der Wirtschaftsstandort noch durch international wettbewerbsfähige Produkte aus. Allerdings setzen zahlreiche nationale und internationale Entwicklungen sowie Megatrends diese preisliche Wettbewerbsfähigkeit zunehmend unter Druck. Ohne ein wirtschaftspolitisches Gegensteuern droht die Standortattraktivität Deutschlands zu schwinden – mit entsprechenden Auswirkungen auf den Wohlstand.
$Z^0$ boson associated b-jet production in high-energy nuclear collisions
Creators: name: Wang, Sa
name: Dai, Wei
name: Zhang, Ben-Wei
name: Wang, Enke
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The production of vector boson tagged heavy quark jets potentially provides new tools to probe the jet quenching effect. In this paper, we present the first theoretical study on the angular correlations ($Δϕ_{bZ}$), transverse momentum imbalance ($x_{bZ}$), and nuclear modification factor ($I_{AA}$) of $Z^0$ boson tagged b-jets in heavy-ion collisions, which was performed using a Monte Carlo transport model. We find that the medium modification of the $Δϕ_{bZ}$ for $Z^0\,+\,$b-jet has a weaker dependence on $Δϕ_{bZ}$ than that for $Z^0\,+\,$jet, and the modification patterns are sensitive to the initial jet $p_T$ distribution. Additionally, with the high purity of the quark jet in $Z^0\,+\,$(b-)jet production, we calculate the momentum imbalance $x_{bZ}$ and the nuclear modification factor $I_{AA}$ of $Z^0\,+\,$b-jet in Pb+Pb collisions. We observe a smaller $Δ\left\langle x_{jZ} \right\rangle$ and larger $I_{AA}$ of $Z^0\,+\,$b-jet in Pb+Pb collisions relative to those of $Z^0\,+\,$jet, which may be an indication of the mass effect of jet quenching and can be tested in future measurements.
description: 13 pages, 12 figures, 1 table. The version to appear in CPC
The Hamiltonian formalism of the Inverse Problem
Creators: name: Alishah, Hassan Najafi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 34A55, 34A30, 70H06, 70H33

description: A big-isotropic structure is a generalization of the notion of Dirac structure, due to Vaisman. We discuss the inverse problem of deciding if a vector field is Hamiltonian having a big-isotropic structure as underlying geometry. In [1] we have considered this question for the special case of replicator equations. Here we generalize that approach to any vector field that can be written in the form $X(u)=(\Bη)(u),$ where $\B=\B(u)$ is a matrix and $η=η(u)$ is a vector. For a linear system we show that, if the representing matrix of the system has at least one pair of positive-negative non-zero eigenvalues, or a zero eigenvalue with at least one 3-dimensional Jordan block associated to it, then the linear system has a Hamiltonian description with respect to a big-isotropic structure. As a byproduct, we find a class of linear systems with zero eigenvalue that are Hamiltonian with respect to a big-isotropic structure but not a Dirac structure. Moreover, we prove that every linear Hamiltonian system, having a big-isotropic structure as underlying geometry, is completely integrable in the sense of Zung [12]. For linear systems, in the both Hamiltonian formulation and complete integrability cases, explicit descriptions of the geometric structures, the Hamiltonian functions, the first integrals and the commuting flows are provided.
description: Presentation is improved significantly, to appear in Journal of Geometry and Physics
Timing Process Interventions with Causal Inference and Reinforcement Learning
Creators: name: Weytjens, Hans
name: Verbeke, Wouter
name: De Weerdt, Jochen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The shift from the understanding and prediction of processes to their optimization offers great benefits to businesses and other organizations. Precisely timed process interventions are the cornerstones of effective optimization. Prescriptive process monitoring (PresPM) is the sub-field of process mining that concentrates on process optimization. The emerging PresPM literature identifies state-of-the-art methods, causal inference (CI) and reinforcement learning (RL), without presenting a quantitative comparison. Most experiments are carried out using historical data, causing problems with the accuracy of the methods' evaluations and preempting online RL. Our contribution consists of experiments on timed process interventions with synthetic data that renders genuine online RL and the comparison to CI possible, and allows for an accurate evaluation of the results. Our experiments reveal that RL's policies outperform those from CI and are more robust at the same time. Indeed, the RL policies approach perfect policies. Unlike CI, the unaltered online RL approach can be applied to other, more generic PresPM problems such as next best activity recommendations. Nonetheless, CI has its merits in settings where online learning is not an option.
Large-Scale Marine Image Annotation in the Age of the Web and Deep Learning
Creators: name: Zurowietz, Martin
Publisher: name: Universität Bielefeld
Year: 2022
Subjects: subject: 004

description: Digital imaging has become one of the most important techniques to non-invasively collect data in the field of marine benthic environmental monitoring and exploration. Traditionally, marine imaging data is analyzed by manual image annotation where domain experts mark objects of interest in the images and assign class labels to the marked objects. With technological advances of underwater carrier systems, digital cameras and digital storage technology, the acquisition rate of marine imaging data is rapidly increasing. Traditional purely manual image annotation cannot keep up with the volume of newly acquired data, as the availability of domain experts who can annotate the images is very limited. Hence, new (computational) approaches that increase both the efficiency and effectivity of marine image annotation are required.

 In this thesis, BIIGLE 2.0 is presented, which is a web-based application for image annotation with a special focus on marine imaging. BIIGLE 2.0 offers several novel concepts and annotation tools that enable highly efficient manual image annotation. Furthermore, the application architecture of BIIGLE 2.0 allows for a versatile deployment from a mobile single-chip computer in the field up to a large cloud-based stationary setup. The possibility to synchronize annotation data between multiple BIIGLE 2.0 instances and a federated search pave the way for the creation of a powerful collaborative network of annotation systems across research ships, monitoring stations or research institutes. In addition, the Machine learning Assisted Image Annotation method (MAIA) and its extension through Unsupervised Knowledge Transfer (UnKnoT) are presented. MAIA introduces a four-stage image annotation workflow that includes machine learning methods for computer vision to automate the time-consuming task of object detection. This allows human observers to annotate large marine image collections much faster than before. With UnKnoT, the first two MAIA stages for unsupervised object detection can be skipped for datasets with special properties that are often given in the benthic marine imaging context, accelerating the workflow even more. The combination of BIIGLE 2.0, MAIA and UnKnoT presents an advancement for marine image annotation that integrates manual annotation with specialized software, automated computer assistance and a sophisticated user interface for a highly efficient and effective annotation process.
 In addition, the method and tool Interactive Feature Localization in Deep neural networks (IFeaLiD) is presented, which offers a novel way for the inspection of convolutional neural networks for computer vision. IFeaLiD can be used, among other objectives, to judge the suitability of a particular trained network for a specific task such as object detection in the marine imaging context.
Maximal tripartite entanglement between singlet-triplet qubits in quantum dots
Creators: name: Hiltunen, Tuukka
name: Harju, Ari
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Singlet-triplet states in double quantum dots are promising realizations of qubits, and capacitive coupling can be used to create entanglement between these qubits. We propose an entangling three-qubit gate of singlet-triplet qubits in a triangular setup. Our simulations using a realistic microscopic model show that a maximally entangled Greenberger-Horne-Zeilinger state can be generated as the qubits are evolved under exchange. Furthermore, our analysis for the gate operation can be used to extract the actual experimental pulse sequence needed to realize this.
A Low-Dimensional Representation for Robust Partial Isometric Correspondences Computation
Creators: name: Brunton, Alan
name: Wand, Michael
name: Wuhrer, Stefanie
name: Seidel, Hans-Peter
name: Weinkauf, Tino
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Intrinsic isometric shape matching has become the standard approach for pose invariant correspondence estimation among deformable shapes. Most existing approaches assume global consistency, i.e., the metric structure of the whole manifold must not change significantly. While global isometric matching is well understood, only a few heuristic solutions are known for partial matching. Partial matching is particularly important for robustness to topological noise (incomplete data and contacts), which is a common problem in real-world 3D scanner data. In this paper, we introduce a new approach to partial, intrinsic isometric matching. Our method is based on the observation that isometries are fully determined by purely local information: a map of a single point and its tangent space fixes an isometry for both global and the partial maps. From this idea, we develop a new representation for partial isometric maps based on equivalence classes of correspondences between pairs of points and their tangent spaces. From this, we derive a local propagation algorithm that find such mappings efficiently. In contrast to previous heuristics based on RANSAC or expectation maximization, our method is based on a simple and sound theoretical model and fully deterministic. We apply our approach to register partial point clouds and compare it to the state-of-the-art methods, where we obtain significant improvements over global methods for real-world data and stronger guarantees than previous heuristic partial matching algorithms.
description: 17 pages, 12 figures
A Background-Agnostic Framework with Adversarial Training for Abnormal Event Detection in Video
Creators: name: Georgescu, Mariana-Iuliana
name: Ionescu, Radu Tudor
name: Khan, Fahad Shahbaz
name: Popescu, Marius
name: Shah, Mubarak
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Abnormal event detection in video is a complex computer vision problem that has attracted significant attention in recent years. The complexity of the task arises from the commonly-adopted definition of an abnormal event, that is, a rarely occurring event that typically depends on the surrounding context. Following the standard formulation of abnormal event detection as outlier detection, we propose a background-agnostic framework that learns from training videos containing only normal events. Our framework is composed of an object detector, a set of appearance and motion auto-encoders, and a set of classifiers. Since our framework only looks at object detections, it can be applied to different scenes, provided that normal events are defined identically across scenes and that the single main factor of variation is the background. To overcome the lack of abnormal data during training, we propose an adversarial learning strategy for the auto-encoders. We create a scene-agnostic set of out-of-domain pseudo-abnormal examples, which are correctly reconstructed by the auto-encoders before applying gradient ascent on the pseudo-abnormal examples. We further utilize the pseudo-abnormal examples to serve as abnormal examples when training appearance-based and motion-based binary classifiers to discriminate between normal and abnormal latent features and reconstructions. We compare our framework with the state-of-the-art methods on four benchmark data sets, using various evaluation metrics. Compared to existing methods, the empirical results indicate that our approach achieves favorable performance on all data sets. In addition, we provide region-based and track-based annotations for two large-scale abnormal event detection data sets from the literature, namely ShanghaiTech and Subway.
description: Accepted in IEEE Transactions on Pattern Analysis and Machine Intelligence
Frame-wise Cross-modal Matching for Video Moment Retrieval
Creators: name: Tang, Haoyu
name: Zhu, Jihua
name: Liu, Meng
name: Gao, Zan
name: Cheng, Zhiyong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Video moment retrieval targets at retrieving a moment in a video for a given language query. The challenges of this task include 1) the requirement of localizing the relevant moment in an untrimmed video, and 2) bridging the semantic gap between textual query and video contents. To tackle those problems, early approaches adopt the sliding window or uniform sampling to collect video clips first and then match each clip with the query. Obviously, these strategies are time-consuming and often lead to unsatisfied accuracy in localization due to the unpredictable length of the golden moment. To avoid the limitations, researchers recently attempt to directly predict the relevant moment boundaries without the requirement to generate video clips first. One mainstream approach is to generate a multimodal feature vector for the target query and video frames (e.g., concatenation) and then use a regression approach upon the multimodal feature vector for boundary detection. Although some progress has been achieved by this approach, we argue that those methods have not well captured the cross-modal interactions between the query and video frames. In this paper, we propose an Attentive Cross-modal Relevance Matching (ACRM) model which predicts the temporal boundaries based on an interaction modeling. In addition, an attention module is introduced to assign higher weights to query words with richer semantic cues, which are considered to be more important for finding relevant video contents. Another contribution is that we propose an additional predictor to utilize the internal frames in the model training to improve the localization accuracy. Extensive experiments on two datasets TACoS and Charades-STA demonstrate the superiority of our method over several state-of-the-art methods. Ablation studies have been also conducted to examine the effectiveness of different modules in our ACRM model.
description: 12 pages; accepted by IEEE TMM
Zero temperature limits of Gibbs states for almost-additive potentials
Creators: name: Iommi, Godofredo
name: Yayama, Yuki
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper is devoted to study ergodic optimisation problems for almost-additive sequences of functions (rather than a fixed potential) defined over countable Markov shifts (that is a non-compact space). Under certain assumptions we prove that any accumulation point of a family of Gibbs equilibrium measures is a maximising measure. Applications are given in the study of the joint spectral radius and to multifractal analysis of Lyapunov exponent of non-conformal maps.
description: Changes in Sections 4 and 5 are included in this version
The role of nonmetricity in metric-affine theories of gravity
Creators: name: Vitagliano, Vincenzo
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The intriguing choice to treat alternative theories of gravity by means of the Palatini approach, namely elevating the affine connection to the role of independent variable, contains the seed of some interesting (usually under-explored) generalizations of General Relativity, the metric-affine theories of gravity. The peculiar aspect of these theories is to provide a natural way for matter fields to be coupled to the independent connection through the covariant derivative built from the connection itself. Adopting a procedure borrowed from the effective field theory prescriptions, we study the dynamics of metric-affine theories of increasing order, that in the complete version include invariants built from curvature, nonmetricity and torsion. We show that even including terms obtained from nonmetricity and torsion to the second order density Lagrangian, the connection lacks dynamics and acts as an auxiliary field that can be algebraically eliminated, resulting in some extra interactions between metric and matter fields.
description: 15 pages. v2: some misconceptions clarified, references added. Accepted for publication on Classical and Quantum Gravity
Oligoryzomys andinus
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys andinus

description: Oligoryzomys andinus (Osgood, 1914). Field Mus. Nat. Hist. Pubi., Zool. Ser., 10:156. TYPE LOCALITY: Peru, La Libertad Dept., upper Rio Chicama, Hacienda Liagueda, 6000 ft. DISTRIBUTION: W Peru and WC Bolivia; geographic and altitudinal limits uncertain. COMMENTS: Karyotype reported by Gardner and Patton (1976).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 717, DOI: 10.5281/zenodo.7353098
description: {"references": ["Gardner, A. L., and J. L. Patton. 1976. Karyotypic variation in oryzomyine rodents (Cricetinae) with comments on chromosomal evolution in the Neotropical cricetine complex. Occasional Papers of the Museum of Zoology, Louisiana State University, 49: 1 - 48."]}
Buffering and Trapping Ultrashort Optical Pulses in Concatenated Bragg Gratings
Creators: name: Fu, Shenhe
name: Liu, Yikun
name: Li, Yongyao
name: Song, Liyan
name: Li, Juntao
name: Malomed, Boris A.
name: Zhou, Jianying
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Strong retardation of ultrashort optical pulses, including their deceleration and stoppage in the form of Bragg solitons in a cascaded Bragg-grating (BG) structure, is proposed. The manipulations of the pulses are carried out, using nonlinear effects, in a chirped BG segment which is linked, via a defect, to a uniform grating. The storage of the ultrashort pulses is shown to be very robust with respect to variations of the input field intensity, suggesting the feasibility of storing ultrafast optical pulses in such a structure. Physical estimates are produced for the BGs written in silicon.
description: Optics Letters, in press
CLASH-VLT: spectroscopic confirmation of a z=6.11 quintuply lensed galaxy in the Frontier Fields Cluster RXC J2248.7-4431
Creators: name: Balestra, I.
name: Vanzella, E.
name: Rosati, P.
name: Monna, A.
name: Grillo, C.
name: Nonino, M.
name: Mercurio, A.
name: Biviano, A.
name: Bradley, L.
name: Coe, D.
name: Fritz, A.
name: Postman, M.
name: Seitz, S.
name: Scodeggio, M.
name: Tozzi, P.
name: Zheng, W.
name: Ziegler, B.
name: Zitrin, A.
name: Annunziatella, M.
name: Bartelmann, M.
name: Benitez, N.
name: Broadhurst, T.
name: Bouwens, R.
name: Czoske, O.
name: Donahue, M.
name: Ford, H.
name: Girardi, M.
name: Infante, L.
name: Jouvel, S.
name: Kelson, D.
name: Koekemoer, A.
name: Kuchner, U.
name: Lemze, D.
name: Lombardi, M.
name: Maier, C.
name: Medezinski, E.
name: Melchior, P.
name: Meneghetti, M.
name: Merten, J.
name: Molino, A.
name: Moustakas, L.
name: Presotto, V.
name: Smit, R.
name: Umetsu, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present VIsible Multi-Object Spectrograph (VIMOS) observations of a z 6 galaxy quintuply imaged by the Frontier Fields galaxy cluster RXC J2248.7-4431 (z=0.348). This sub-L^*, high-z galaxy has been recently discovered by Monna et al. (2013) using dropout techniques with the 16-band HST photometry acquired as part of the Cluster Lensing And Supernova survey with Hubble (CLASH). Obtained as part of the CLASH-VLT survey, the VIMOS medium-resolution spectra of this source show a very faint continuum between ~8700A and ~9300A and a prominent emission line at 8643A, which can be readily identified with Lyman-alpha at z=6.110. The emission line exhibits an asymmetric profile, with a more pronounced red wing. The rest-frame equivalent width of the line is EW=79+-10A. After correcting for magnification, the star-formation rate (SFR) estimated from the Lya line is SFR(Lya)=11 M_{sol}/yr and that estimated from the UV data is SFR(UV)=3 M_{sol}/yr. We estimate that the effective radius of the source is R_e6 M_{sol}/yr/kpc^2 and, using the Kennicutt-Schmidt relation, a gas surface mass density Sigma_{gas}>10^3 M_{sol}/pc^2. Our results support the idea that this magnified, distant galaxy is a young and compact object with 0.4 L^* at z=6, with comparable amount of mass in gas and stars. Future follow-up observations with ALMA will provide valuable insight into the SFR and molecular gas content of this source. In the spirit of the Frontier Fields initiative, we also publish the redshifts of several multiply imaged sources and other background objects which will help improving the strong lensing model of this galaxy cluster.
description: 4 pages, 3 figures, 1 table, Accepted for publication in A&A (minor changes, published version)