cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Probabilistic Cloning of Coherent States without a Phase Reference
Creators: name: Müller, Christian R.
name: Wittmann, Christoffer
name: Marek, Petr
name: Filip, Radim
name: Marquardt, Christoph
name: Leuchs, Gerd
name: Andersen, Ulrik L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a probabilistic cloning scheme operating independently of any phase reference. The scheme is based solely on a phase-randomized displacement and photon counting, omitting the need for non-classical resources and non-linear materials. In an experimental implementation, we employ the scheme to clone coherent states from a phase covariant alphabet and demonstrate that the cloner is capable of outperforming the hitherto best-performing deterministic scheme. An analysis of the covariances between the output states shows that uncorrelated clones can be approached asymptotically. An intriguing feature is that the trade-off between success rate and achieved fidelity can be optimized even after the cloning procedure.
Reoccurring patterns in hierarchical protein materials and music: The power of analogies
Creators: name: Giesa, Tristan
name: Spivak, David
name: Buehler, Markus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biomolecules (q-bio.BM)
subject: Category Theory (math.CT)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Complex hierarchical structures composed of simple nanoscale building blocks form the basis of most biological materials. Here we demonstrate how analogies between seemingly different fields enable the understanding of general principles by which functional properties in hierarchical systems emerge, similar to an analogy learning process. Specifically, natural hierarchical materials like spider silk exhibit properties comparable to classical music in terms of their hierarchical structure and function. As a comparative tool here we apply hierarchical ontology logs (olog) that follow a rigorous mathematical formulation based on category theory to provide an insightful system representation by expressing knowledge in a conceptual map. We explain the process of analogy creation, draw connections at several levels of hierarchy and identify similar patterns that govern the structure of the hierarchical systems silk and music and discuss the impact of the derived analogy for nanotechnology.
description: 13 pages, 3 figures
A study of flux lines lattice order and critical current with time of flight small angle neutron scattering
Creators: name: Pautrat, Alain
name: Brulet, Annie
name: Simon, Charles
name: Mathieu, Patrice
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Small angle neutron scattering (SANS) is an historical technique to study the flux lines lattice (FLL) in a superconductor. Structural characteristics of the FLL can be revealed, providing fundamental information for the physics of vortex lattice. However, the spatial resolution is limited and all the correlation lengths of order are difficult to extract with precision. We show here that a time of flight technique reveals the Bragg peak of the FLL, and also its translational order with a better resolution. We discuss the implication of these results for pinning mechanisms in a Niobium sample.
description: accepted in PRB
Gravitational models with non-local scalar fields
Creators: name: Vernov, Sergey Yu.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A general class of f(R) gravity models with minimally coupling a nonlocal scalar field is considered. The Ostrogradski representation for nonlocal gravitational models with a quadratic potential and the way of its localization are proposed. We study the action with an arbitrary analytic function $F(\Box)$, which has both simple and double roots. The way of localization allows to find particular solutions of nonlocal equations of gravity.
description: 7 pages, has been published in the proceedings of the XIXth International Workshop on High Energy Physics and Quantum Field Theory (QFTHEP'2010), http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=104
3D Teeth Reconstruction from Panoramic Radiographs using Neural Implicit Functions
Creators: name: Park, Sihwa
name: Kim, Seongjun
name: Song, In-Seok
name: Baek, Seung Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Panoramic radiography is a widely used imaging modality in dental practice and research. However, it only provides flattened 2D images, which limits the detailed assessment of dental structures. In this paper, we propose Occudent, a framework for 3D teeth reconstruction from panoramic radiographs using neural implicit functions, which, to the best of our knowledge, is the first work to do so. For a given point in 3D space, the implicit function estimates whether the point is occupied by a tooth, and thus implicitly determines the boundaries of 3D tooth shapes. Firstly, Occudent applies multi-label segmentation to the input panoramic radiograph. Next, tooth shape embeddings as well as tooth class embeddings are generated from the segmentation outputs, which are fed to the reconstruction network. A novel module called Conditional eXcitation (CX) is proposed in order to effectively incorporate the combined shape and class embeddings into the implicit function. The performance of Occudent is evaluated using both quantitative and qualitative measures. Importantly, Occudent is trained and validated with actual panoramic radiographs as input, distinct from recent works which used synthesized images. Experiments demonstrate the superiority of Occudent over state-of-the-art methods.
description: 12 pages, 2 figures, accepted to International Conference on Medical Image Computing and Computer-Assisted Intervention MICCAI 2023
Channels as Objects in Concurrent Object-Oriented Programming
Creators: name: Campos, Joana
name: Vasconcelos, Vasco T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: There is often a sort of a protocol associated to each class, stating when and how certain methods should be called. Given that this protocol is, if at all, described in the documentation accompanying the class, current mainstream object-oriented languages cannot provide for the verification of client code adherence against the sought class behaviour. We have defined a class-based concurrent object-oriented language that formalises such protocols in the form of usage types. Usage types are attached to class definitions, allowing for the specification of (1) the available methods, (2) the tests clients must perform on the result of methods, and (3) the object status - linear or shared - all of which depend on the object's state. Our work extends the recent approach on modular session types by eliminating channel operations, and defining the method call as the single communication primitive in both sequential and concurrent settings. In contrast to previous works, we define a single category for objects, instead of distinct categories for linear and for shared objects, and let linear objects evolve into shared ones. We introduce a standard sync qualifier to prevent thread interference in certain operations on shared objects. We formalise the language syntax, the operational semantics, and a type system that enforces by static typing that methods are called only when available, and by a single client if so specified in the usage type. We illustrate the language via a complete example.
description: In Proceedings PLACES 2010, arXiv:1110.3853
Making Measurement of Use
Creators: name: Clarke, Helen
Publisher: name: University of Calgary
Year: 2010
Subjects: subject: information seeking
subject: user based design
subject: claims analysis
subject: libraries

description: In this study I review the use of behavioural models, and HCI practices including task analysis, personas, and claims analysis, to develop a sustainable and renewable model of scholars’ information seeking behaviour that can be used to develop performance measures and guide the development of digital libraries.
Bloch sphere representation of three-vertex geometric phases
Creators: name: Tamate, Shuhei
name: Ogawa, Kazuhisa
name: Kitano, Masao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The properties of the geometric phases between three quantum states are investigated in a high-dimensional Hilbert space using the Majorana representation of symmetric quantum states. We found that the geometric phases between the three quantum states in an N-state quantum system can be represented by N-1 spherical triangles on the Bloch sphere. The parameter dependence of the geometric phase was analyzed based on this picture. We found that the geometric phase exhibits rich nonlinear behavior in a high-dimensional Hilbert space.
description: 5 pages, 4 figures
Probing the interaction of Aspergillus fumigatus conidia and human airway epithelial cells by transcriptional profiling in both species
Creators: name: Gomez, Pol
Publisher: name: University of British Columbia
Year: 2010

description: The cells of the airway epithelium play critical roles in host defense to inhaled irritants, and in asthma pathogenesis. These cells are constantly exposed to environmental factors, including the conidia of the ubiquitous mould Aspergillus fumigatus, which are small enough to reach the alveoli. A. fumigatus is associated with a spectrum of diseases ranging from asthma and allergic bronchopulmonary aspergillosis to aspergilloma and invasive aspergillosis. Airway epithelial cells have been shown to internalize A. fumigatus conidia in vitro, but the implications of this process for pathogenesis remain unclear. We have developed a cell culture model for this interaction using the human bronchial epithelium cell line 16HBE and a transgenic A. fumigatus strain expressing green fluorescent protein (GFP). Immunofluorescent staining and nystatin protection assays indicated that cells internalized upwards of 50% of bound conidia. Using fluorescence-activated cell sorting (FACS), cells directly interacting with conidia and cells not associated with any conidia were sorted into separate samples, with an overall accuracy of 75%. Genome-wide transcriptional profiling using microarrays revealed significant responses of 16HBE cells and conidia to each other. Significant changes in gene expression were identified between cells and conidia incubated alone versus together, as well as between GFP positive and negative sorted cells. The identification of biologically relevant responses in both species validates this methodology, and motivates further work to characterize the interactions between A. fumigatus conidia and primary airway epithelial cells obtained from normal and asthmatic patients.
Equivariant Poincaré series of filtrations and topology
Creators: name: Campillo, A.
name: Delgado, F.
name: Gusein-Zade, S. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14B05, 16W70, 16W22

description: Earlier, for an action of a finite group $G$ on a germ of an analytic variety, an equivariant $G$-Poincaré series of a multi-index filtration in the ring of germs of functions on the variety was defined as an element of the Grothendieck ring of $G$-sets with an additional structure. We discuss to which extend the $G$-Poincaré series of a filtration defined by a set of curve or divisorial valuations on the ring of germs of analytic functions in two variables determines the (equivariant) topology of the curve or of the set of divisors.
Landauer formula for phonon heat conduction: relation between energy transmittance and transmission coefficient
Creators: name: Das, Suman G.
name: Dhar, Abhishek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The heat current across a quantum harmonic system connected to reservoirs at different temperatures is given by the Landauer formula, in terms of an integral over phonon frequencies ω, of the energy transmittance T(ω). There are several different ways to derive this formula, for example using the Keldysh approach or the Langevin equation approach. The energy transmittance T(ω) is usually expressed in terms of nonequilibrium phonon Green's function and it is expected that it is related to the transmission coefficient τ(ω) of plane waves across the system. In this paper, for a one-dimensional set-up of a finite harmonic chain connected to reservoirs which are also semi-infinite harmonic chains, we present a simple and direct demonstration of the relation between T(ω) and τ(ω). Our approach is easily extendable to the case where both system and reservoirs are in higher dimensions and have arbitrary geometries, in which case the meaning of τ and its relation to T are more non-trivial.
description: 17 pages, 1 figure
Contrastive encoder pre-training-based clustered federated learning for heterogeneous data
Creators: name: Tun, Ye Lin
name: Nguyen, Minh N. H.
name: Thwal, Chu Myaet
name: Choi, Jinwoo
name: Hong, Choong Seon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Federated learning (FL) is a promising approach that enables distributed clients to collaboratively train a global model while preserving their data privacy. However, FL often suffers from data heterogeneity problems, which can significantly affect its performance. To address this, clustered federated learning (CFL) has been proposed to construct personalized models for different client clusters. One effective client clustering strategy is to allow clients to choose their own local models from a model pool based on their performance. However, without pre-trained model parameters, such a strategy is prone to clustering failure, in which all clients choose the same model. Unfortunately, collecting a large amount of labeled data for pre-training can be costly and impractical in distributed environments. To overcome this challenge, we leverage self-supervised contrastive learning to exploit unlabeled data for the pre-training of FL systems. Together, self-supervised pre-training and client clustering can be crucial components for tackling the data heterogeneity issues of FL. Leveraging these two crucial strategies, we propose contrastive pre-training-based clustered federated learning (CP-CFL) to improve the model convergence and overall performance of FL systems. In this work, we demonstrate the effectiveness of CP-CFL through extensive experiments in heterogeneous FL settings, and present various interesting observations.
description: Published in Neural Networks
Limitation of multi-resolution methods in community detection
Creators: name: Xiang, Ju
name: Hu, Ke
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Recently, a type of multi-resolution methods in community detection was introduced, which can adjust the resolution of modularity by modifying the modularity function with tunable resolution parameters, such as those proposed by Arenas, Fernandez and Gomez and by Reichardt and Bornholdt. In this paper, we show that these methods still have the intrinsic limitation-large communities may have been split before small communities become visible-because it is at the cost of the community stability that the enhancement of the modularity resolution is obtained. The theoretical results indicated that the limitation depends on the degree of interconnectedness of small communities and the difference between the sizes of small communities and of large communities, while independent of the size of the whole network. These findings have been confirmed in several example networks, where communities even are full-completed sub-graphs.
description: 10 pages, 4 figures
Communication Efficiency Optimization of Federated Learning for Computing and Network Convergence of 6G Networks
Creators: name: Cai, Yizhuo
name: Lei, Bo
name: Zhao, Qianying
name: Peng, Jing
name: Wei, Min
name: Zhang, Yushun
name: Zhang, Xing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Federated learning effectively addresses issues such as data privacy by collaborating across participating devices to train global models. However, factors such as network topology and device computing power can affect its training or communication process in complex network environments. A new network architecture and paradigm with computing-measurable, perceptible, distributable, dispatchable, and manageable capabilities, computing and network convergence (CNC) of 6G networks can effectively support federated learning training and improve its communication efficiency. By guiding the participating devices' training in federated learning based on business requirements, resource load, network conditions, and arithmetic power of devices, CNC can reach this goal. In this paper, to improve the communication efficiency of federated learning in complex networks, we study the communication efficiency optimization of federated learning for computing and network convergence of 6G networks, methods that gives decisions on its training process for different network conditions and arithmetic power of participating devices in federated learning. The experiments address two architectures that exist for devices in federated learning and arrange devices to participate in training based on arithmetic power while achieving optimization of communication efficiency in the process of transferring model parameters. The results show that the method we proposed can (1) cope well with complex network situations (2) effectively balance the delay distribution of participating devices for local training (3) improve the communication efficiency during the transfer of model parameters (4) improve the resource utilization in the network.
description: 13 pages, 11 figures, accepted by Frontiers of Information Technology & Electronic Engineering
Discovering the Next Generation of Library Search
Creators: name: Pival, Paul R.
name: Brown, David
name: Wood, Aaron
Publisher: name: University of Calgary
Year: 2010
Subjects: subject: Discovery
subject: Next Generation Catalogues
subject: Metadata Aggregation
subject: Library User Experience
subject: Serials Solutions Summon
subject: OCLC WorldCat Local
subject: ExLibris Primo Central

description: A few years ago Federated Search was touted as the best way to offer users access to multiple resources. But Federated Search turned out to be slow, difficult to maintain, and suspect with regards to search results. Over the past year a new breed of service has arisen: the Discovery Service. By searching pre-indexed (as opposed to live) data, discovery services return search results very quickly. This presentation discusses the University of Calgary Library's reasons for choosing to trial a Discovery Service after having run a Federated Search product for over a year. The presentation covers the technology used, some of the challenges encountered, and presents feedback from Library users.
Twist of fractional oscillations
Creators: name: Stanislavsky, Aleksander
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using the method of the Laplace transform, we consider fractional oscillations. They are obtained by the time-clock randomization of ordinary harmonic vibrations. In contrast to sine and cosine, the functions describing the fractional oscillations exhibit a finite number of damped oscillations with an algebraic decay. Their fractional differential equation is derived.
description: 12 pages, 2 figures
Comparing Mid-Infrared Globular Cluster Colors With Population Synthesis Models
Creators: name: Barmby, P.
name: Jalilian, F. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Several population synthesis models now predict integrated colors of simple stellar populations in the mid-infrared bands. To date, the models have not been extensively tested in this wavelength range. In a comparison of the predictions of several recent population synthesis models, the integrated colors are found to cover approximately the same range but to disagree in detail, for example on the effects of metallicity. To test against observational data, globular clusters are used as the closest objects to idealized groups of stars with a single age and single metallicity. Using recent mass estimates, we have compiled a sample of massive, old globular clusters in M31 which contain enough stars to guard against the stochastic effects of small-number statistics, and measured their integrated colors in the Spitzer/IRAC bands. Comparison of the cluster photometry in the IRAC bands with the model predictions shows that the models reproduce the cluster colors reasonably well, except for a small (not statistically significant) offset in [4.5]-[5.8]. In this color, models without circumstellar dust emission predict bluer values than are observed. Model predictions of colors formed from the V band and the IRAC 3.6 and 4.5 micron bands are redder than the observed data at high metallicities and we discuss several possible explanations. In agreement with model predictions, V-[3.6] and V-[4.5] colors are found to have metallicity sensitivity similar to or slightly better than V-Ks.
description: AJ in press; 28 pages incl 7 figures
TOWARDS IMPROVED REPRESENTATIONS ON HUMAN ACTIVITY UNDERSTANDING
Creators: name: Chi, Hyung-gun
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 460304
subject: Computer vision

description: Human action recognition stands as a cornerstone in the domain of computer vision, with its utility spanning across emergency response, sign language interpretation, and the burgeoning fields of augmented and virtual reality. The transition from conventional video-based recognition to skeleton-based methodologies has been a transformative shift, offering a robust alternative less susceptible to environmental noise and more focused on the dynamics of human movement.This body of work encapsulates the evolution of action recognition, emphasizing the pivotal role of Graph Convolution Network (GCN) based approaches, particularly through the innovative InfoGCN framework. InfoGCN has set a new precedent in the field by introducing an information bottleneck-based learning objective, a self-attention graph convolution module, and a multi-modal representation of the human skeleton. These advancements have collectively elevated the accuracy and efficiency of action recognition systems.Addressing the prevalent challenge of occlusions, particularly in single-camera setups, the Pose Relation Transformer (PORT) framework has been introduced. Inspired by the principles of Masked Language Modeling in natural language processing, PORT refines the detection of occluded joints, thereby enhancing the reliability of pose estimation under visually obstructive conditions.Building upon the foundations laid by InfoGCN, the Skeleton ODE framework has been developed for online action recognition, enabling real-time inference without the need for complete action observation. By integrating Neural Ordinary Differential Equations, Skeleton ODE facilitates the prediction of future movements, thus reducing latency and paving the way for real-time applications.The implications of this research are vast, indicating a future where real-time, efficient, and accurate human action recognition systems could significantly impact various sectors, including healthcare, autonomous vehicles, and interactive technologies. Future research directions point towards the integration of multi-modal data, the application of transfer learning for enhanced generalization, the optimization of models for edge computing, and the ethical deployment of action recognition technologies. The potential for these systems to contribute to healthcare, particularly in patient monitoring and disease detection, underscores the need for continued interdisciplinary collaboration and innovation.
Isophote curves on timelike surfaces in Minkowski 3-space
Creators: name: Dogan, Fatih
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 51B20, 53A35, 53B30

description: Isophote comprises a locus of the surface points whose normal vectors make a constant angle with a fixed vector. In this paper, isophote curves are studied on timelike surfaces in Minkowski 3-space E31. The axises of spacelike and timelike isophote curves are found via their Darboux frames. Subsequently, the relationship between isophotes and slant helices is shown on timelike surfaces.
description: 11 pages. arXiv admin note: text overlap with arXiv:1203.4388
The Rap GTPases regulate B cell polarity and morphology by controlling the localization of Scribble and the activation of cofilin
Creators: name: Lei, Victor
Publisher: name: University of British Columbia
Year: 2010

description: Naïve resting B cells circulate throughout the body and enter secondary lymphoid organs (SLOs) in response to chemical cues known as chemokines. Within SLOs, B cells scan for foreign antigens, and antigen-induced clustering of the B cell receptor (BCR) initiates B cell activation. This clustering is enhanced through the formation of an immune synapse between the B cell and antigen presenting cell, which greatly amplifies BCR signaling and B cell activation. We have previously shown that activation of the Rap GTPases is important for the cytoskeletal changes that underlie B cell spreading, migration, and immune synapse formation. We have also shown that stimulating B-lymphocytes with a model particulate antigen, anti-BCR-coated polystyrene beads, causes cells to polarize and form actin-rich cups at sites of cell:bead contacts, and that the formation of these cups enhance B cell activation. Although a number of downstream targets of activated Rap (Rap-GTP) have been identified, the mechanisms by which Rap-GTP promotes cell polarization, actin polymerization, reorganization of the actin cytoskeleton, and changes in cell morphology are not completely understood. The establishment of cell polarity often involves complexes of evolutionarily conserved polarity proteins. One such polarity complex includes the Scribble protein. In this thesis, I show that Rap-GTP is important for generating an asymmetric distribution of Scribble when B cells encounter particulate antigens and form cups. The ability of leukocytes to assume a polarized morphology also requires that the cortical F-actin cytoskeleton be disassembled so that new F-actin filaments that contribute to the formation of a leading edge, F-actin-rich cup, or immune synapse can be assembled. Since cofilin plays a major role in severing and depolymerizing F-actin filaments, I tested the hypothesis that the Rap GTPases regulate changes in cell shape by controlling the activation of cofilin, a process that requires its dephosphorylation by the Slingshot phosphatase. I show that BCR clustering leads to cofilin dephosphorylation, and hence activation, which is dependent on activation of the Rap GTPases. This suggests that an early step underlying BCR-induced changes in B cell morphology that involve reorganization of the actin cytoskeleton is the Rap-dependent activation of the actin-severing protein cofilin.
Μελανοκύττωμα: βιβλιογραφική ανασκόπηση της διαχείρισης του .Παρουσίαση έξι περιστατικών
Creators: name: Κεμανετζή Χριστίνα Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Μελανοκύττωμα
Δερματοσκόπηση
Μελάνωμα
Melanocytoma
Dermatoscopy
Melanoma

description: Το 2018 ο ΠΟΥ αναθεώρησε την ταξινόμηση των μελανοκυτταρικών όγκων του δέρματος. Αυτό έθεσε νέα κριτήρια στο αν ένας όγκος είναι καλοήθης ή όχι διότι χρησιμοποιήθηκαν νέα δεδομένα για τον ορισμό του σπίλου και του μελανώματος. Εισήχθη δε και νέα κατηγοριοποίηση, αυτή των μελανοκυττωμάτων, η οποία βρίσκεται στην ενδιάμεση γκρίζα ζώνη μεταξύ καλοήθειας και κακοήθειας. Σημαντικό ρόλο στην υιοθέτηση της δημιουργίας της νέας αυτής κατηγορίας έπαιξε η εις βάθος ιστοπαθολογική γνώση των μελανοκυττωμάτων και η περαιτέρω διερεύνησή τους με ανοσοϊστοχημικούς και μοριακούς ελέγχους. Ανάμεσα στα μελανοκυττώματα διακρίνονται δε δύο βασικές κατηγορίες, μία χαμηλού και μία υψηλού βαθμού κακοήθειας, μια διάκριση ιδιαίτερα σημαντική διότι καθορίζει την περαιτέρω αντιμετώπισή τους. Στην κλινική μας είχαμε 6 περιστατικά που αφορούσαν σε μελανοκυττώματα. Η κλινική και δερματοσκοπική τους εικόνα μας οδήγησε στην εκτομή των βλαβών και την περαιτέρω διερεύνησή τους.. Περαιτέρω επιστημονική έρευνα είναι απαραίτητη για την πιο ξεκάθαρη και ακριβή διάκριση των ενδιάμεσων όγκων. Είναι επιβεβλημένη η γνώση της ύπαρξής τους κατ’ αρχήν από τους κλινικούς δερματολόγους θέτοντας την υποψία διάγνωσής τους, και κατά δεύτερο λόγο από τους ιστοπαθολόγους οι οποίοι θα προχωρήσουν στην περαιτέρω διερεύνησή τους, καθορίζοντας έτσι και την στρατηγική αντιμετώπισης
description: In 2018 the WHO revised the classification of melanocytic skin tumors. This set new criteria for whether a tumor is benign or not, since new data were used to modify the definition of nevus and melanoma. Furthermore, a new group of entities called melanocytomas was defined in the intermediate gray zone between benignity and malignancy. An important role in this approach was served by advanced histopathological knowledge of melanocytomas and their further investigation using immunohistochemical and molecular tests. Two main categories of melanocytomas emerged, one associated with low and another with a high degree of malignancy, a critical distinction which determines further treatment. In our clinic we had 6 cases of melanocytomas. Relevant clinical and dermatoscopic findings led us to the excision of the lesions and for further investigation.. Further research is necessary in order to distinguish intermediate tumors ore clearly and accurately. It is important to ensure that clinical
Importance Sampling for Multiscale Diffusions
Creators: name: Dupuis, Paul
name: Spiliopoulos, Konstantinos
name: Wang, Hui
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 60F05, 60F10, 60G60

description: We construct importance sampling schemes for stochastic differential equations with small noise and fast oscillating coefficients. Standard Monte Carlo methods perform poorly for these problems in the small noise limit. With multiscale processes there are additional complications, and indeed the straightforward adaptation of methods for standard small noise diffusions will not produce efficient schemes. Using the subsolution approach we construct schemes and identify conditions under which the schemes will be asymptotically optimal. Examples and simulation results are provided.
Investigating the associations between upper limb motor function and cognitive impairment: a scoping review
Creators: name: Rudd, KD
name: Lawler, Katherine
name: Callisaya, ML
name: Alty, J
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 520203
subject: Cognitive neuroscience
classificationCode: 3202
subject: Clinical sciences
classificationCode: 3105
subject: Genetics
subject: FOS: Biological sciences
classificationCode: 420106
subject: Physiotherapy

description: Upper limb motor function is a potential new biomarker of cognitive impairment and may aid discrimination from healthy ageing. However, it remains unclear which assessments to use. This study aimed to explore what methods have been used and to describe associations between upper limb function and cognitive impairment. A scoping review was conducted using PubMed, CINAHL and Web of Science. A systematic search was undertaken, including synonyms for key concepts ‘upper limb’, ‘motor function’ and ‘cognitive impairment’. Selection criteria included tests of upper limb motor function and impaired cognition in adults. Analysis was by narrative synthesis. Sixty papers published between 1998 and 2022, comprising 41,800 participants, were included. The most common assessment tasks were finger tapping, Purdue Pegboard Test and functional tasks such as writing. Protocols were diverse in terms of equipment used and recording duration. Most participants were recruited from clinical settings. Alzheimer’s Disease was the most common cause of cognitive impairment. Results were mixed but, generally, slower speed, more errors, and greater variability in upper limb movement variables was associated with cognitive impairment. This review maps the upper limb motor function assessments used and summarises the available evidence on how these associate with cognitive impairment. It identifies research gaps and may help guide protocols for future research. There is potential for upper limb motor function to be used in assessments of cognitive impairment.
A Logic for Choreographies
Creators: name: Carbone, Marco
name: Grohmann, Davide
name: Hildebrandt, Thomas T.
name: López, Hugo A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Programming Languages (cs.PL)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.3.1; F.3.2; C.2.4

description: We explore logical reasoning for the global calculus, a coordination model based on the notion of choreography, with the aim to provide a methodology for specification and verification of structured communications. Starting with an extension of Hennessy-Milner logic, we present the global logic (GL), a modal logic describing possible interactions among participants in a choreography. We illustrate its use by giving examples of properties on service specifications. Finally, we show that, despite GL is undecidable, there is a significant decidable fragment which we provide with a sound and complete proof system for checking validity of formulae.
description: In Proceedings PLACES 2010, arXiv:1110.3853
Spin freezing by Anderson localization in one-dimensional semiconductors
Creators: name: Echeverría-Arrondo, Carlos
name: Sherman, E. Ya.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: One-dimensional quantum wires are considered as prospective elements for spin transport and manipulation in spintronics. We study spin dynamics in semiconductor GaAs-like nanowires with disorder and spin-orbit interaction by using a rotation in the spin subspace gauging away the spin-orbit field. If the disorder is sufficiently strong, the spin density after a relatively short relaxation time reaches a plateau. This effect is a manifestation of the Anderson localization and depends in a universal way on the disorder and the spin-orbit coupling strength. As a result, at a given disorder, semiconductor nanowires can permit a long-term spin polarization tunable with the spin-orbit interactions.
Measurement and analysis of residual stresses and warpage in fiber reinforced plastic and hybrid components
Creators: name: Wu, Tao
name: Tinkloh, Steffen Rainer
name: Tröster, Thomas
name: Zinn, Wolfgang
name: Niendorf, Thomas
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: residual stress
subject: warpage
subject: incremental hole drilling method
subject: fiber reinforced plastic
subject: 620
subject: 660
subject: Faserverstärkter Kunststoff
subject: Hybridwerkstoff
subject: Verzug
subject: Eigenspannung

description: Gefördert durch den Publikationsfonds der Universität Kassel
Тиристорски исправљач заснован на програмабилном логичком контролеру "Omron" CJ1G-CPU43H и картици електронике "DIGISP 068" са редундантним чоперским излазним степеном
Creators: name: Vukić, Vladimir
Publisher: name: Zenodo
Year: 2009

description: Примарни захтев корисника постављен пред модификоване исправљаче серије ДРИ-ПТ са картицом управљачке електронике "DIGISP 068" је одржавање константног номиналног напона на потрошачима једносмерне струје, без обзира на стање или режим пуњења батерије. Коришћење DC/DC претварача TSC за напајање потрошача омогућава рад исправљача са потрошачима у свим режимима рада (допуњавање, пуњење, форсирано пуњење), уз одржавање стабилног напона од 48 V на потрошачима. Нове функције дигитално регулисаног исправљача управљаног програмабилним логичким контролером "Omron" серије CJ1-H су редундантно напајањe потрошача константним номиналним напоном, посебно мерење и регулисање струје батерије и укупне струје исправљача, сигнализација вредности струја и напона исправљача струјним петљама 4-20 mA. Модификоване су функције "меког старта", провере присуства батерије, регулатора, заштите и сигнализације. У складу са резултатима објављеним у литератури, очекује се да ће промена поступка провере присуства батерије довести до унапређења процеса пуњења батерије, уз продужење њеног животног века. Напајање потрошача чопером чији је минимални улазни напон 36 V спречава потпуно пражњење оловне батерије (до 1,5 V /ћелији).
Superconducting phase transitions in ultrathin TiN films
Creators: name: Baturina, T. I.
name: Postolova, S. V.
name: Mironov, A. Yu.
name: Glatz, A.
name: Baklanov, M. R.
name: Vinokur, V. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate transition to the superconducting state in the ultrathin titanium nitride films on approach to superconductor-insulator transition. Building on the complete account of quantum contributions to conductivity, we demonstrate that the resistance of thin superconducting films exhibits a non-monotonic temperature behaviour due to the competition between weak localization, electron-electron interaction, and superconducting fluctuations. We show that superconducting fluctuations give rise to an appreciable decrease in the resistance even at temperatures well exceeding the superconducting transition temperature, T_c, with this decrease being dominated by the Maki-Thompson process.The transition to a global phase-coherent superconducting state occurs via the Berezinskii-Kosterlitz-Thouless (BKT) transition, which we observe both by power-law behaviour in current-voltage characteristics and by flux flow transport in the magnetic field. The ratio T_{BKT}/T_c follows the universal Beasley-Mooij-Orlando relation. Our results call for revisiting the past data on superconducting transition in thin disordered films.
description: 6 pages, 4 figures
Hide and seek between Andromeda's halo, disk, and giant stream
Creators: name: Clementini, Gisella
name: Ramos, Rodrigo Contreras
name: Federici, Luciana
name: Macario, Giulia
name: Beccari, Giacomo
name: Testa, Vincenzo
name: Cignoni, Michele
name: Marconi, Marcella
name: Ripepi, Vincenzo
name: Tosi, Monica
name: Bellazzini, Michele
name: Pecci, Flavio Fusi
name: Diolaiti, Emiliano
name: Cacciari, Carla
name: Marano, Bruno
name: Giallongo, Emanuele
name: Ragazzoni, Roberto
name: Di Paola, Andrea
name: Gallozzi, Stefano
name: Smareglia, Riccardo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Photometry in B, V (down to V ~ 26 mag) is presented for two 23' x 23' fields of the Andromeda galaxy (M31) that were observed with the blue channel camera of the Large Binocular Telescope during the Science Demonstration Time. Each field covers an area of about 5.1kpc x 5.1kpc at the distance of M31 ((m-M)o ~ 24.4 mag), sampling, respectively, a northeast region close to the M31 giant stream (field S2), and an eastern portion of the halo in the direction of the galaxy minor axis (field H1). The stream field spans a region that includes Andromeda's disk and the giant stream, and this is reflected in the complexity of the color magnitude diagram of the field. One corner of the halo field also includes a portion of the giant stream. Even though these demonstration time data were obtained under non-optimal observing conditions the B photometry, acquired in time-series mode, allowed us to identify 274 variable stars (among which 96 are bona fide and 31 are candidate RR Lyrae stars, 71 are Cepheids, and 16 are binary systems) by applying the image subtraction technique to selected portions of the observed fields. Differential flux light curves were obtained for the vast majority of these variables. Our sample includes mainly pulsating stars which populate the instability strip from the Classical Cepheids down to the RR Lyrae stars, thus tracing the different stellar generations in these regions of M31 down to the horizontal branch of the oldest (t ~ 10 Gyr) component.
description: 59 pages, 26 figures, 12 tables, ApJ in press
Nuclear structure study around Z=28
Creators: name: Srivastava, P. C.
name: Mehrotra, I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Yrast levels of Ni, Cu and Zn isotopes for $40 \leq N \leq50$ have been described by state-of-the-art shell model calculations with three recently available interactions using $^{56}$Ni as a core in the $f_{5/2}pg_{9/2}$ model space. The results are unsatisfactory viz. large $E(2^+)$ for very neutron rich nuclei, small B(E2) values in comparison to experimental values. These results indicate an importance of inclusion of $πf_{7/2}$ and $νd_{5/2}$ orbitals in the model space to reproduce collectivity in this region.
description: 12 pages, 14 figures
Ambipolar transition voltage spectroscopy: analytical results and experimental agreement
Creators: name: Baldea, Ioan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: This work emphasizes that the transition voltages $V_{t \pm}$ for both bias polarities ($V${\raisebox{1.2ex}{$_{\stackrel{>}{
Empowering COVID-19 Detection: Optimizing Performance Through Fine-Tuned EfficientNet Deep Learning Architecture
Creators: name: Talukder, Md. Alamin
name: Layek, Md. Abu
name: Kazi, Mohsin
name: Uddin, Md Ashraf
name: Aryal, Sunil
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The worldwide COVID-19 pandemic has profoundly influenced the health and everyday experiences of individuals across the planet. It is a highly contagious respiratory disease requiring early and accurate detection to curb its rapid transmission. Initial testing methods primarily revolved around identifying the genetic composition of the coronavirus, exhibiting a relatively low detection rate and requiring a time-intensive procedure. To address this challenge, experts have suggested using radiological imagery, particularly chest X-rays, as a valuable approach within the diagnostic protocol. This study investigates the potential of leveraging radiographic imaging (X-rays) with deep learning algorithms to swiftly and precisely identify COVID-19 patients. The proposed approach elevates the detection accuracy by fine-tuning with appropriate layers on various established transfer learning models. The experimentation was conducted on a COVID-19 X-ray dataset containing 2000 images. The accuracy rates achieved were impressive of 100% for EfficientNetB4 model. The fine-tuned EfficientNetB4 achieved an excellent accuracy score, showcasing its potential as a robust COVID-19 detection model. Furthermore, EfficientNetB4 excelled in identifying Lung disease using Chest X-ray dataset containing 4,350 Images, achieving remarkable performance with an accuracy of 99.17%, precision of 99.13%, recall of 99.16%, and f1-score of 99.14%. These results highlight the promise of fine-tuned transfer learning for efficient lung detection through medical imaging, especially with X-ray images. This research offers radiologists an effective means of aiding rapid and precise COVID-19 diagnosis and contributes valuable assistance for healthcare professionals in accurately identifying affected patients.
description: Computers in Biology and Medicine [Q1, IF: 7.7, CS: 9.2]
Understanding Giant Radio Galaxy J1420-0545: Large-Scale Morphology, Environment, and Energetics
Creators: name: Machalski, J.
name: Jamrozy, M.
name: Stawarz, L.
name: Koziel-Wierzbowska, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper we consider the possibility that the structure of the largest radio galaxy J1420-0545 is formed by a restarted rather than a primary jet activity. This hypothesis is motivated by the unusual morphological properties of the source, suggesting almost ballistic propagation of powerful jets in a particularly low-density environment. New radio observations of J1420-0545 confirm its morphology consisting of only two narrow lobes; no trace of any outer low-density cavity due to the previous jet activity is therefore detected. Different model fits performed using the newly accessed radio data imply relatively young age of the source, its exceptionally high expansion velocity, large jet kinetic power, and confirm particularly low-density environment. We find that it is possible to choose a realistic set of the model parameters for which the hypothetical outer lobes of J1420-0545 are old enough so that their expected radio surface brightness is substantially below the rms noise level of the available radio maps. On the other hand, the extremely low density of the gas surrounding the J1420-0545 lobes is consistent with the mean density of the baryonic matter in the Universe. This suggests that the source may be instead located in a real void of the galaxy and matter distribution. In both cases the giant radio lobes of J1420-0545 are expected to modify substantially the surrounding matter by driving strong shocks and heating the gas located at the outskirts of the filamentary galactic distribution. Finally, we also find that the energetic requirements for the source are severe in terms of the total jet power and the total energy deposited by the outflows far away from the central engine.
description: 42 pages, 9 figures, 6 tables; Accepted for publication in ApJ