cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Beyond the two-state model of switching in biology and computation
Creators: name: Deshpande, Abhishek
Publisher: name: Imperial College London
Year: 2018

description: The thesis presents various perspectives on physical and biological computation. Our fundamental object of study in both these contexts is the notion of switching/erasing a bit. In a physical context, a bit is represented by a particle in a double well, whose dynamics is governed by the Langevin equation. We define the notions of reliability and erasing time-scales in addition to the work required to erase a bit for a given family of control protocols. We call bits “optimal” if they meet the required reliability and erasing time requirements with minimal work cost. We find that optimal bits always saturate the erasing time requirement, but may not saturate the reliability time requirement. This allows us to eliminate several regions of parameter space as sub-optimal. In a biological context, our bits are represented by substrates that are acted upon by catalytic enzymes. We define retroactivity as the back-signal propagated by the downstream system when connected to the upstream system. We analyse certain upstream systems that can help mitigate retroactivity. However, these systems require a substantial pool of resources and are therefore not optimal. As a consequence, we turn our attention to insulating networks called push-pull motifs. We find that high rates of energy consumption are not essential to alleviate retroactivity in push-pull motifs; all we need is to couple weakly to the upstream system. However, this approach is not resilient to cross-talk caused by leak reactions in the circuit. Next, we consider a single enzyme-substrate reaction and analyse its mechanism. Our system has two intermediate states (enzyme-substrate complexes). Our main question is “How should we choose binding energies of the intermediates to minimize sequestra- tion of substrates (retroactivity), whilst maintaining a minimum flux at steady-state?”. Choosing very low binding energies increases retroactivity since the system spends a considerable proportion of time in the intermediate states. Choosing binding energies that are very high reduces retroactivity, but hinders the progress of the reaction. As a result, we find that the the optimal binding energies are both moderate, and indeed tuned with each other. In particular, their difference is related to the free energy difference between the products and reactants.
Symmetry Realization, Poisson Kernel and the AdS/CFT Correspondence
Creators: name: Chang, Zhe
name: Guo, Han-Ying
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two kinds of realizations of symmetry on classical domains or the Euclidean version of AdS space are used to study AdS/CFT correspondence. Mass of free particles is defined as an AdS group invariant, the Klein-Gordon and Dirac equations for relativistic particles in the AdS space are set up as a mimic in the case of Minkowskian space. The bulk-boundary propagator on the AdS space is given by the Poisson kernel. Theorems on the Poisson kernel guarantee the existence and sole of the bulk-boundary propagator. The propagator is used to calculate correlators of the theories that live on the boundary of the AdS space and show conformal invariance, which is desired by the AdS/CFT correspondence.
description: 11 pages, no figure, Latex
Why rankings of biomedical image analysis competitions should be interpreted with care
Creators: name: Maier-Hein, Lena
name: Eisenmann, Matthias
name: Reinke, Annika
name: Onogur, Sinan
name: Stankovic, Marko
name: Scholz, Patrick
name: Arbel, Tal
name: Bogunovic, Hrvoje
name: Bradley, Andrew P.
name: Carass, Aaron
name: Feldmann, Carolin
name: Frangi, Alejandro F.
name: Full, Peter M.
name: van Ginneken, Bram
name: Hanbury, Allan
name: Honauer, Katrin
name: Kozubek, Michal
name: Landman, Bennett A.
name: März, Keno
name: Maier, Oskar
name: Maier-Hein, Klaus
name: Menze, Bjoern H.
name: Müller, Henning
name: Neher, Peter F.
name: Niessen, Wiro
name: Rajpoot, Nasir
name: Sharp, Gregory C.
name: Sirinukunwattana, Korsuk
name: Speidel, Stefanie
name: Stock, Christian
name: Stoyanov, Danail
name: Taha, Abdel Aziz
name: van der Sommen, Fons
name: Wang, Ching-Wei
name: Weber, Marc-André
name: Zheng, Guoyan
name: Jannin, Pierre
name: Kopp-Schneider, Annette
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: International challenges have become the standard for validation of biomedical image analysis methods. Given their scientific impact, it is surprising that a critical analysis of common practices related to the organization of challenges has not yet been performed. In this paper, we present a comprehensive analysis of biomedical image analysis challenges conducted up to now. We demonstrate the importance of challenges and show that the lack of quality control has critical consequences. First, reproducibility and interpretation of the results is often hampered as only a fraction of relevant information is typically provided. Second, the rank of an algorithm is generally not robust to a number of variables such as the test data used for validation, the ranking scheme applied and the observers that make the reference annotations. To overcome these problems, we recommend best practice guidelines and define open research questions to be addressed in the future.
description: Article published in Nature Communications: https://rdcu.be/bRmNr
Subset Vertex Graphs for Social Networks
Creators: name: W. B. Vasantha Kandasamy
name: K. Ilanthenral
name: Smarandache, Florentin
Publisher: name: figshare
Year: 2018
Subjects: Algebra

description: In this book authors for the first time introduce the notion of subset vertex graph using the vertex set as the subset of the power set P(S), S is assumed in this book to be finite; however it can be finite or infinite. We have defined two types of subset vertex graphs, one is directed and the other one is not directed.
Information-theoretic privacy in smart meters
Creators: name: Giaconi, Giulio
Publisher: name: Imperial College London
Year: 2018

description: Smart grids promise to enhance drastically the efficiency of today's power networks. One of the key components of smart grids is the smart meter, which allows to monitor a user's electricity consumption with much higher resolution compared to conventional energy meters. However, the high resolution of smart meter measurements also entails serious privacy implications for the users, as it makes easier to distinguish the power signature of single appliances from the aggregate household consumption. This would lead an attacker, which may be a thief, a surveillance agency, or the utility provider itself, to gain insights into users' activities and behaviors. In this dissertation we analyze several privacy-preserving techniques that protect users' privacy without diminishing the utility of smart grids. We adopt physical resources that are increasingly available at the users' premises, such as renewable energy sources and rechargeable batteries, and use them to minimize the information leaked about a user's electricity consumption, as well as the cost of energy. We deploy information-theoretic tools to characterize the fundamental limits of smart meter privacy, measuring privacy via mutual information, and characterizing single-letter expressions for the information leaked when considering infinite and zero-capacity rechargeable batteries. These scenarios represent lower and upper bounds on the privacy performance of more realistic settings with finite-capacity rechargeable batteries. When considering a finite-capacity battery, we express the information leakage as an additive quantity, and cast the problem as a stochastic control problem, which can be solved by dynamic programming. We also propose more empirical privacy-preserving strategies, testing their performance against real smart meter measurements and time of use pricing tariffs. In particular, we measure privacy as the squared difference between the smart meter measurements and a target profile, which we consider as a completely private power profile, and characterize the optimal trade-off between privacy and cost of energy.
Applying GSAT to Non-Clausal Formulas
Creators: name: Sebastiani, R.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper we describe how to modify GSAT so that it can be applied to non-clausal formulas. The idea is to use a particular ``score'' function which gives the number of clauses of the CNF conversion of a formula which are false under a given truth assignment. Its value is computed in linear time, without constructing the CNF conversion itself. The proposed methodology applies to most of the variants of GSAT proposed so far.
description: See http://www.jair.org/ for any accompanying files
Ultrasensitive detection of pancreatic cancer biomarkers by nanoscale engineered fluorescence enhancing materials
Creators: name: Jawad, Zaynab Abdul Raheem
Publisher: name: Imperial College London
Year: 2018

description: Pancreatic cancer is one of the deadliest cancers in the world. The main reason is that patients do not show symptoms until the advanced stages of the disease, when it has spread to other organs. In the late stages, there is no cure for pancreatic cancer and the only feasible treatments are chemotherapy and radiotherapy, which only prolong survival by a few months. In fact, only 15% of patients present when the disease is still resectable with surgery, which is the only cure. The main reason for these poor outcomes is that there is no diagnostic test to detect the disease in the early asymptomatic stage. Nanotechnology is an emerging field that is providing solutions to some of the dilemmas in cancer. For diagnostics, nanoparticles are being used to increase the sensitivity of detecting circulating cancer biomarkers in blood using a phenomenon known as metal enhanced fluorescence. By increasing the sensitivity of detecting these biomarkers, it has been shown that lower tumour burden can be identified. Furthermore, novel biomarkers such as microRNAs are proving to be promising candidates as biomarkers for early pancreatic cancer. In this project, four different nanomaterials for metal enhanced fluorescence-based detection of biomarkers were developed and evaluated using pancreatic cancer biomarkers. The nanomaterials have been optimised for use in biosensing. The lowest limit of detection achieved using tunable gold nanotriangular arrays was 7.7 × 10−7 UmL−1 and 10-15 M for CA 19–9 and GPC-1 respectively. A concentration dependent metal enhanced fluorescent assay was achieved for microRNA-21, also for detecting pancreatic cancer. Both assays were highly specific for their respective analyte of interest. These nanomaterials show great potential as multiplexing platforms to simultaneously detect multiple biomarkers for pancreatic cancer. In future, this strategy may improve the detection of the disease in the early stages to improve patient outcomes.
Topics arising from 3x3 bimatrix games
Creators: name: Olszowiec, Cezary Mikolaj
Publisher: name: Imperial College London
Year: 2018

description: This thesis is devoted to the study of bimatrix games, in particular examples of 3x3 bimatrix games governed by the Best Response Dynamics or coupled replicator equations. In Chapter 2, we present an approach to Hofbauer’s conjecture, positing that convergence of bimatrix games to the unique and completely mixed Nash equilibrium under the Best Response Dynamics occurs only for zero-sum games. We present partial results concerning this conjecture and inter alia provide some dynamical characterization of zero-sum games. In section 3.7, we provide a presumptive evidence that Hofbauer’s conjecture might be incorrect. In Chapter 3, we consider an example of a cyclic competition bimatrix game, a Rock-Scissors-Paper game. We investigate shadowing of the non-transverse heteroclinic network naturally appearing in this model, as well as the stability of some peculiar subcycles. Moreover, we present our numerical investigations and provide our presumptions about the way chaos might be born in this model. In Chapter 4, we consider a toy-model motivated by the Rock-Scissors-Paper game. The toy-model consists of a 2-dimensional center manifold of a saddle-elliptic point in R4 and 3-dimensional stable/unstable manifolds (of this center manifold) which coincide. We derive the normal form of the ODE-governed toy-model being considered near the center manifold and the normal form of the return map to the vicinity of the center manifold along the non-transverse homoclinic channel. We investigate in detail the dynamics of the return map.
title: A generalized Higgs potential with two degenerate minima for a dark QCD matter scenario
Creators: name: Lutz, Matthias F. M.
name: Heo, Yonggoo
name: Guo, Xiao-Yu
Publisher: name: Springer
Year: 2022

description: We consider the Higgs potential in generalizations of the Standard Model. The possibility of the potential to develop two almost degenerate minima is explored. This would imply that QCD matter at two distinct sets of quark masses is relevant for astrophysics and cosmology. If in the exotic minimum the QCD matter ground state is electromagnetically neutral, dark matter may consist of QCD matter and antimatter in bubbles of the Higgs field. We predict an abundance of γ rays in the few MeV region as messengers of dark matter regions in space. In addition the ratio of dark matter to normal matter is expected to show a time dependence.
Academic Accreditation Standards | معايير الاعتماد الأكاديمي
Creators: name: د. محمد عبدي آدم
Publisher: name: SORER
Year: 2021
Subjects: Academic
Accreditation
Standard

description: Dr. Mohamed Abdi Adam has given this presentation at SomaliREN Annual Council Meetings in Jigjiga, Somali region of Ethiopia.
Effective Action for an SU(2) Gauge Model with a Vortex
Creators: name: Zhukovsky, V. Ch.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Effective action of an SU(2) gauge model with a vortex in 4-dimensional space time is calculated in the 1-loop approximation. The minimum of the effective potential is found.
description: 5 pages, LATEX Submitted for publication to Vest. Mosk. Univ., Fiz. Astron
Plasmodium falciparum rhoptry proteins play diverse roles in the asexual erythrocytic life cycle, including in erythrocyte invasion, protein export and nutrient import
Creators: name: Sherling, Emma
Publisher: name: Imperial College London
Year: 2018

description: Plasmodium falciparum invades, replicates within and egresses from red blood cells. This asexual red blood cell stage is crucial for the propagation of the parasite and also accounts for all clinical manifestations of the disease. There is currently no effective vaccine available, and drug resistance is increasingly being seen across all classes of antimalarials. As a member of the Apicomplexa phylum, Plasmodium parasites contain a characteristic apical complex of organelles that includes the micronemes, rhoptries and dense granules. Proteins are resident within each of these organelles but there is only limited information about their roles within the parasite. Very few of the tens of proteins thought to localise to the paired and club-shaped rhoptries have been functionally categorised. Conventional gene disruption attempts indicated two rhoptry-resident proteins, RhopH3 and RAMA, to be essential, but their precise function remains undescribed. A third rhoptry protein, RON3, was annotated based on weak orthology to proteins of other apicomplexan parasites. The essentiality and the function of RON3 within P. falciparum remains to be determined. In this thesis, conditional disruption of the P. falciparum RhopH3, RAMA and RON3 genes confirms all three are essential for the blood stage cycle. Distinct, but universally lethal, phenotypic consequences result. Parasites expressing an internally truncated RhopH3 protein show two distinct phenotypes: a significant reduction in invasion and, for those parasites still able to invade, a complete block in nutrient uptake across the red blood cell membrane. Contrastingly, RAMA-null parasites show a complete block in invasion, which in turn is thought to be reflective of aberrant rhoptry morphology. Finally, RON3-null parasites are capable of invading but incapable of exporting parasite-derived proteins into the host red blood cell. These studies conclude that RhopH3, RAMA and RON3 play essential, yet distinct, roles across multiple stages of the asexual blood stage cycle.
Additional file 2 of Single-cell multi-omics analysis identifies SPP1+ macrophages as key drivers of ferroptosis-mediated fibrosis in ligamentum flavum hypertrophy
Creators: name: Fei, Chengshuo
name: Chen, Yanlin
name: Tan, Ruiqian
name: Yang, Xinxing
name: Wu, Guanda
name: Li, Chenglong
name: Shi, Jiawei
name: Le, Shiyong
name: Yang, Wenjie
name: Xu, Jiajia
name: Wang, Liang
name: Zhang, Zhongmin
Publisher: name: figshare
Year: 2025
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: table S2. Ferroptosis-promoting genes and Ferroptosis-resisting genes.
Fuzzy and Neutrosophic Sets in Semigroups
Creators: name: Jun, Young Bae
name: Madad Khan
name: Smarandache, Florentin
name: Anis, Saima
Publisher: name: figshare
Year: 2018
Subjects: Algebra

description: The topics discussed in this book are Int-soft semigroup, Int-soft left (right) ideal, Int-soft (generalized) bi-ideal, Int-soft quasi-ideal, Int-soft interior ideal, Int-soft left (right) duo semigroup, starshaped (∈, ∈∨ qk)-fuzzy set, quasi-starshaped (∈, ∈∨ qk)-fuzzy set, semidetached mapping, semidetached semigroup, (∈, ∈ ∨qk)-fuzzy subsemi-group, (qk, ∈ ∨qk)-fuzzy subsemigroup, (∈, ∈ ∨ qk)-fuzzy subsemigroup, (qk, ∈ ∨ qk)-fuzzy subsemigroup, (∈ ∨ qk, ∈ ∨ qk)-fuzzy subsemigroup, (∈, ∈∨ qkδ)-fuzzy subsemigroup, ∈∨ qkδ -level subsemigroup/bi-ideal, (∈, ∈∨ qkδ )-fuzzy (generalized) bi-ideal, δ-lower (δ- upper) approximation of fuzzy set, δ-lower (δ-upper) rough fuzzy subsemigroup, δ-rough fuzzy subsemigroup, Neutrosophic N -structure, neutrosophic N -subsemigroup, ε-neutrosophic N -subsemigroup, and neutrosophic N -product.
Morphology with a Null-Interface
Creators: name: Trost, Harald
name: Matiasek, Johannes
Publisher: name: arXiv
Year: 1994
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We present an integrated architecture for word-level and sentence-level processing in a unification-based paradigm. The core of the system is a CLP implementation of a unification engine for feature structures supporting relational values. In this framework an HPSG-style grammar is implemented. Word-level processing uses X2MorF, a morphological component based on an extended version of two-level morphology. This component is tightly integrated with the grammar as a relation. The advantage of this approach is that morphology and syntax are kept logically autonomous while at the same time minimizing interface problems.
description: 7 pages, LaTeX, uses fullname.sty, to appear in COLING'95
Complete search methods and tools for robust parameter estimation
Creators: name: Peric, Nikola
Publisher: name: Imperial College London
Year: 2018

description: This thesis is concerned with the application of complete search optimization methods to solve parameter estimation problems, with a focus on models taking the form of ordinary differential equations (ODEs). Complete search methods are of paramount importance in solving chemical and process systems engineering optimization problems, where multiple local optima are exhibited almost pathologically due to the frequent presence of highly nonlinear models. Meanwhile, parameter estimation problems are most commonly cast as an optimization exercise, where parameters are chosen such that model predictions match recorded observations as closely as possible. As such, the guarantee of global optimality should be considered a requirement in any model identifcation framework, particularly when observations are uncertain and further optimization problems must be solved to determine a region where parameter values are expected to lie. This thesis presents a new approach to nonlinear regression, called {\em set-membership nonlinear regression} (SMR). The SMR region is defined as the set of all global optimizers to a nonlinear regression problem in the presence of bounded uncertainty on the observed variables, and we show how to enclose this region for both algebraic-input and dynamic models by solving a set of semi-infinite optimization problems. In addition, this thesis presents an extension of set-valued integration to enable efficient sensitivity analysis of parameter-dependent ODE systems, using both the forward and adjoint methods. Auxiliary ODE systems are derived whose solutions define bounds on the forward and adjoint sensitivity trajectories. These methods are further used in solving global dynamic optimzation problems, where optimality conditions are used as redundant constraints in order to reduce the search space. Efficient numerical implementation is at the forefront of all research described in this thesis. All methods described can be found within the library CRONOS https://github.com/omega-icl/cronos}, which makes use of the library MC++ https://github.com/omega-icl/mcpp.
The Formation of Ultra Diffuse Galaxies in Cored Dark Matter Halos Through Tidal Stripping and Heating
Creators: name: Carleton, Timothy
name: Errani, Raphaël
name: Cooper, Michael
name: Kaplinghat, Manoj
name: Peñarrubia, Jorge
name: Guo, Yicheng
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We propose that the Ultra-Diffuse Galaxy (UDG) population represents a set of satellite galaxies born in $\sim10^{10}-10^{11}$ M$_\odot$ halos, similar to field dwarfs, which suffer a dramatic reduction in surface brightness due to tidal stripping and heating. This scenario is observationally motivated by the radial alignment of UDGs in Coma as well as the significant dependence of UDG abundance on cluster mass. As a test of this formation scenario, we apply a semi-analytic model describing the change in stellar mass and half-light radius of dwarf satellites, occupying either cored or cuspy halos, to cluster subhalos in the Illustris-dark simulation. Key to this model are results from simulations which indicate that galaxies in cored dark-matter halos expand significantly in response to tidal stripping and heating, whereas galaxies in cuspy halos experience limited size evolution. Our analysis indicates that a population of tidally-stripped dwarf galaxies, residing in cored halos (like those hosting low-surface brightness field dwarfs), is able to reproduce the observed sizes and stellar masses of UDGs in clusters remarkably well.
description: Resubmitted to MNRAS; comments welcome!
Converse Smith-Martin cell cycle kinetics by transformed B lymphocytes
Creators: name: K. Pham
name: A. Kan
name: L. Whitehead
name: R. J. Hennessy
name: K. Rogers
name: P. D. Hodgkin
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Recent studies using direct live cell imaging have reported that individual B lymphocytes have correlated transit times between their G1 and S/G2/M phases. This finding is in contradiction with the influential model of Smith and Martin that assumed the bulk of the total cell cycle time variation arises in the G1 phase of the cell cycle with little contributed by the S/G2/M phase. Here we extend these studies to examine the relation between cell cycle phase lengths in two B lymphoma cell lines. We report that transformed B lymphoma cells undergo a short G1 period that displays little correlation with the time taken for the subsequent S/G2/M phase. Consequently, the bulk of the variation noted for total division times within a population is found in the S/G2/M phases and not the G1 phase. Models that reverse the expected source of variation and assume a single deterministic time in G1 followed by a lag + exponential distribution for S/G2/M fit the data well. These models can be improved further by adopting two sequential distributions or by using the stretched lognormal model developed for primary lymphocytes. We propose that shortening of G1 transit times and uncoupling from other cell cycle phases may be a hallmark of lymphocyte transformation that could serve as an observable phenotypic marker of cancer evolution.
A Path Integral Representation of the Map between Commutative and Noncommutative Gauge Fields
Creators: name: Okuyama, Kazumi
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The world-volume theory on a D-brane in a constant B-field background can be described by either commutative or noncommutative Yang-Mills theories. These two descriptions correspond to two different gauge fixing of the diffeomorphism on the brane. Comparing the boundary states in the two gauges, we derive a map between commutative and noncommutative gauge fields in a path integral form, when the gauge group is U(1).
description: 14 pages, harvmac; transformation of Wilson loop corrected, SW map at the 2nd order corrected
title: Ein binaurales Richtungshörsystem für mobile Roboter in echoarmer Umgebung
Creators: name: Adamy, Jürgen
name: Voutsas, Kyriakos
name: Willert, Volker
Publisher: name: De Gruyter
Year: 2021

description: In diesem Beitrag wird ein binaurales Lokalisationsmodell für einen autonomen mobilen Roboter vorgestellt, das sich am menschlichen Hörsystem orientiert. Im Mittelpunkt steht die technische Umsetzung der neuronalen Verarbeitungsmechanismen der Olivenkerne des auditorischen Systems, die ein binaurales Richtungshören ermöglichen. Das System ist in der Lage, im Bereich des Sichtfeldes des Roboters eine Schallquelle in echoarmer, d. h. reflexionsarmer Umgebung anhand von Laufzeitunterschieden und Pegeldifferenzen zu lokalisieren. Die Möglichkeit des Richtungshörens verbessert die Wahrnehmung der unmittelbaren Umgebung des Roboters entscheidend und erlaubt z. B. die Ausrichtung des Roboterkopfes zur Schallquelle.
title: Εκτίμηση κινδύνων και μέτρα προστασίας στους χώρους εργασίας στην περίπτωση της πανδημίας του κορωνοϊού COVID-19
title: Risk assessment and protection measures in the workplace in the case of the COVID-19 pandemic
Creators: name: Γαρουφαλη Βασιλικη
Publisher: name: Technical University of Crete
Year: 2022

description: Όπως όλοι γνωρίζουμε η τρέχουσα επιδημία Covid-19, πλήττει τα τελευταία χρόνια σχεδόν ολόκληρο τον πλανήτη μας.  Πρόκειται για μια πανδημία η οποία προκαλείται από τον κορωνοϊό SARS-CoV-2, που ανήκει στην οικογένεια των κορωνωϊών (coronoviridae), μια μεγάλη οικογένεια RNA ιών. Γενικότερα, όλοι συγκλίνουν στη θέση ότι η συγκεκριμένη πανδημία θα αποτελέσει μια σημαντική δοκιμασία  για το σύνολο των χωρών, με δυσμενείς συνέπειες τόσο για την υγεία όσο και για την κοινωνική ζωή και την οικονομική συνοχή.  Στο πλαίσιο, λοιπόν, αυτής της πρόσφατης πανδημικής κρίσης, η λήψη έκτακτων μέτρων ασφάλειας στα εργασιακά περιβάλλοντα, κρίνεται όχι απλά αναγκαία αλλά και επιβεβλημένη.
 Κύριος στόχος, συνεπώς, του παρόντος ερευνητικού έργου αποτελεί η αναγνώριση και κατόπιν η εκτίμηση των κινδύνων οι οποίοι ελλοχεύουν στο εργασιακό περιβάλλον των οργανισμών και των επιχειρήσεων, λόγω της εξάπλωσης του ιού, μέσω της μεθόδου «Job Hazard Analysis». Σε δεύτερο χρόνο το ενδιαφέρον της έρευνας επικεντρώνεται και προσανατολίζεται κυρίως στη διερεύνηση και στον σχολιασμό των μέτρων πρόληψης και προστασίας στους εργασιακούς χώρους λόγω της εξάπλωσης της νόσου.
Καταληκτικά, το παρόν ερευνητικό πόνημα εστιάζει στην ανίχνευση και αναφορά των κινδύνων για την μετάδοση του ιού Covid-19,  όπως παρατηρήθηκε σε ένα Κατάστημα των Ελληνικών Ταχυδρομείων στην περιοχή των Χανίων.

description: As we all know, the current Covid-19 epidemic has hit almost our entire planet in the recent years. It is a pandemic caused by the coronavirus SARS-CoV-2, which belongs to the coronoviridae family, a large family of RNA viruses. In general, everyone agrees that this pandemic will be a major test for all countries, with adverse consequences for both health and social life and economic cohesion. In the context of the recent pandemic crisis, the adoption of emergency safety measures in the workplace, due to the spread of the Covid Virus 19, is considered not only necessary but also imperative.
The main objective of this research project is initially the assessment of the risks that have lurked in the work environment due to the spread of the virus, through the method "Job Hazard Analysis". Secondly, the interest of the research is oriented to the definition of the measures of prevention and protection of the workplaces from the spread of the disease Covid-19.
Finally, the present research focuses on the detection and reporting of risks for the transmission of Covid-19 virus as observed in a Post Office in the region of Chania.
Degeneracy of zero modes of the Dirac operator in three dimensions
Creators: name: Adam, C.
name: Muratori, B.
name: Nash, C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: One of the key properties of Dirac operators is the possibility of a degeneracy of zero modes. For the Abelian Dirac operator in three dimensions the question whether such multiple zero modes may exist has remained unanswered until now. Here we prove that the feature of zero mode degeneracy indeed occurs for the Abelian Dirac operator in three dimensions, by explicitly constructing a class of Dirac operators together with their multiple zero modes. Further, we discuss some implications of our results, especially a possible relation to the topological feature of Hopf maps.
description: Latex file, 7 pages
title: ADCO, Boursier de Cîteaux : comptes (1489-1493) (11 H 1166), f. 00353
Creators: name: de la Côte-d'Or, Archives départementales
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166), f. 00353, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Diode-pumped alexandrite laser development and vortex mode generation
Creators: name: Kerridge-Johns, William
Publisher: name: Imperial College London
Year: 2018

description: This thesis is focussed on two aspects of solid-state laser development: optimising and understanding diode-pumped Alexandrite laser performance, and a new laser cavity design for vortex mode generation. Due to its broad wavelength tunability (700nm to 858nm) and excellent physical properties, Alexandrite has a wide range of potential applications from remote sensing to quantum optics. Recent advances in red laser diode-pumping has enabled high power and efficient laser operation. In this work a continuous-wave analytical model of end-pumped Alexandrite lasers was developed and applied to experimental systems. This helped to achieve a record diode-pumped slope efficiency of 54% with 1.2W of output power. A record shortest wavelength (714nm) and broadest tuning range (104nm) was obtained through optimising the crystal temperature between 8 °C and 105 °C. Investigation and new measurements of the properties of Alexandrite gave rules applicable in general to optimising these lasers, along with assessing the fundamental limits to Alexandrite laser efficiency. Optical vortex laser beams have attracted considerable attention from their wide range of applications that cover many areas of science, from optical communications to laser machining to microscopic laser manipulation. Directly generating them from a laser has advantages due to the pure and high power modes that can be generated. In this work an anti-resonant ring was proposed and used to couple two lasers through a shared gain medium. Using one cavity to control the output of the other, first order vortex Laguerre-Gaussian modes of power 9.0W from 24W of input power with high quality (M² = 2.1) were obtained, which had controllable and pure handedness. A second order vortex mode with 4.3W of power was also created. This vortex generation geometry could be applied to any solid-state laser gain medium, which would enable vortex generation across the electromagnetic spectrum.
Brachial pressure waveforms: measuring and modelling
Creators: name: Korolkova, Olga
Publisher: name: Imperial College London
Year: 2013

description: Hypertension is a major risk factor of stroke, myocardial infarction, heart failure and organ damage. Although hypertension is currently defined based on the pressure measured in the brachial artery, a number of studies have shown that central aortic blood pressure is a better predictor of cardiovascular events. Central aortic pressure can only be measured invasively, which is undesirable for a patient. It is preferable to measure central blood pressure non-invasively with the same diagnostic efficacy since it is much simpler method that does not require as much expertise. Aortic pressure waveform, measured invasively in patients, is used as an input into nu- merical one-dimensional model of the arterial network to generate brachial pressure wave- forms. Modelled brachial pressure waveforms are compared with those measured invasively (with a pressure wire) and non-invasively (with a cuff-based device). An unpredicted os- cillatory behaviour of the pressure waveform in the brachial artery due to the occlusion of the artery during the cuff inflation is observed. Disagreement in systolic and diastolic pressures between invasive and non-invasive mea- surements led to a study of the propagation of the pressure waveform from the brachial artery through the soft tissue to the surface of the skin, where it is commonly measured. A simplified upper arm model (consisting of one artery and a bone surrounded by soft tissue) of the pressure propagation from the artery to the skin is built in the Comsol Multiphysics software using poroelastic theory to describe the material properties. The brachial pres- sure is approximated with a sinusoidal wave of varying frequency and used as an input in the upper arm model. The results of this model show small uctuations in the cuff pressure. Since our hypothesis that the pressure waveform is being damped when propagating through the soft tissue has not been confirmed, some ideas for model improvement are also presented.
High throughput quantitative metallography for complex microstructures using deep learning: A case study in ultrahigh carbon steel
Creators: name: DeCost, Brian L.
name: Lei, Bo
name: Francis, Toby
name: Holm, Elizabeth A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We apply a deep convolutional neural network segmentation model to enable novel automated microstructure segmentation applications for complex microstructures typically evaluated manually and subjectively. We explore two microstructure segmentation tasks in an openly-available ultrahigh carbon steel microstructure dataset: segmenting cementite particles in the spheroidized matrix, and segmenting larger fields of view featuring grain boundary carbide, spheroidized particle matrix, particle-free grain boundary denuded zone, and Widmanstätten cementite. We also demonstrate how to combine these data-driven microstructure segmentation models to obtain empirical cementite particle size and denuded zone width distributions from more complex micrographs containing multiple microconstituents. The full annotated dataset is available on materialsdata.nist.gov (https://materialsdata.nist.gov/handle/11256/964).
description: Updated with minor revisions reflecting the review process at Microscopy and Microanalysis. Full supplementary materials will be available at https://holmgroup.github.io/publications/
Index Modulation for Molecular Communication via Diffusion Systems
Creators: name: Gursoy, Mustafa Can
name: Basar, Ertugrul
name: Pusane, Ali Emre
name: Tugcu, Tuna
Publisher: name: arXiv
Year: 2018
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Molecular communication via diffusion (MCvD) is a molecular communication method that utilizes the free diffusion of carrier molecules to transfer information at the nano-scale. Due to the random propagation of carrier molecules, inter-symbol interference (ISI) is a major issue in an MCvD system. Alongside ISI, inter-link interference (ILI) is also an issue that increases the total interference for MCvD-based multiple-input-multiple-output (MIMO) approaches. Inspired by the antenna index modulation (IM) concept in traditional communication systems, this paper introduces novel IM-based transmission schemes for MCvD systems. In the paper, molecular space shift keying (MSSK) is proposed as a novel modulation for molecular MIMO systems, and it is found that this method combats ISI and ILI considerably better than existing MIMO approaches. For nano-machines that have access to two different molecules, the direct extension of MSSK, quadrature molecular space shift keying (QMSSK) is also proposed. QMSSK is found to combat ISI considerably well whilst not performing well against ILI-caused errors. In order to combat ILI more effectively, another dual-molecule-based novel modulation scheme called the molecular spatial modulation (MSM) is proposed. Combined with the Gray mapping imposed on the antenna indices, MSM is observed to yield reliable error rates for molecular MIMO systems.
description: 14 pages, 10 figures, final draft of IEEE Transactions on Communications. A small typo in Eqs. (22)-(23) are fixed in this version
On possibility of Decoherence due to Relativistic Effect
Creators: name: Carazza, B.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This note looks at the possibility of a system of free particles presenting decoherence in the total momentum when tracing upon their relative momenta if we take into account a relativistic correction to the expression of the kinetic energy.
description: 16 pages, Latex, no figures
Structural basis of antibacterial peptide export by ABC transporters
Creators: name: Bountra, Kiran Dev
Publisher: name: Imperial College London
Year: 2019

description: Under conditions of nutrient starvation bacteria produce and release antibacterial peptides like the lasso peptide microcin J25 (MccJ25). Uptake of MccJ25 by other bacteria leads to RNA polymerase inhibition and subsequent cell death. MccJ25 is also toxic to the producing organism that utilises ATP-binding cassette (ABC) transporters to provide self-immunity. The ABC transporter McjD is responsible for the efflux of MccJ25. The general architecture of an ABC transporter comprises two nucleotide-binding domains (NBDs) and two transmembrane domains (TMDs). Previously, the structure of McjD from Escherichia coli was determined in complex with a non-hydrolysable ATP analogue (AMP-PNP), providing some insights into the transport cycle. However, the mechanistic basis for MccJ25 secretion remained elusive. In this work, the structure of McjD has been determined in a post-ATP hydrolysis intermediate state (ADP-VO4). Using predictive cysteine cross-linking, cavity accessibility studies, transport assays and PELDOR measurements in lipid membranes, a novel mechanism for MccJ25 secretion is proposed requiring the transient opening of the McjD TMDs for substrate release. Unlike multidrug ABC exporters which display large conformational changes in the TMDs, the McjD TMDs exist in a predominantly occluded state which prevents MccJ25 reuptake upon efflux. These structural insights are complimented by the first single molecule FRET (smFRET) characterisation of an ABC exporter in a native-like environment. The smFRET findings report conformational changes in the NBDs and TMDs of McjD, demonstrating that opening of the TMDs is tightly coupled to the binding of both ATP and MccJ25. The NBDs display intrinsic conformational dynamics on the millisecond timescale whereas the TMDs do not show any dynamic behaviour. Finally, attempts are made to purify and functionally characterize two staphylococcal peptide ABC exporters Pmt and AbcA. These transporters secrete cytolytic α- helical peptides, phenol soluble modulins, that can evade the immune response.
Closed Path Integrals and Renormalisation in Quantum Mechanics
Creators: name: Jirari, H.
name: Kröger, H.
name: Luo, X. Q.
name: Moriarty, K. J. M.
name: Rubin, S. G.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We suggest a closed form expression for the path integral of quantum transition amplitudes. We introduce a quantum action with renormalized parameters. We present numerical results for the $V \sim x^{4}$ potential. The renormalized action is relevant for quantum chaos and quantum instantons.
description: Revised text, 1 figure added; Text (LaTeX file), 1 Figure (ps file)
Additional file 4 of Single-cell multi-omics analysis identifies SPP1+ macrophages as key drivers of ferroptosis-mediated fibrosis in ligamentum flavum hypertrophy
Creators: name: Fei, Chengshuo
name: Chen, Yanlin
name: Tan, Ruiqian
name: Yang, Xinxing
name: Wu, Guanda
name: Li, Chenglong
name: Shi, Jiawei
name: Le, Shiyong
name: Yang, Wenjie
name: Xu, Jiajia
name: Wang, Liang
name: Zhang, Zhongmin
Publisher: name: figshare
Year: 2025
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: table S4. Marker genes of 21 clusters.
Continuous degeneracy of the fcc kagome lattice with magnetic dipolar interactions
Creators: name: Way, Andrew R.
name: Hall, Kyle P. W.
name: Saika-Voivod, Ivan
name: Plumer, Martin L.
name: Southern, Byron W.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Results are presented on analytic and computational analyses of the spin states associated with a 3D fcc lattice composed of ABC stacked kagome planes of magnetic ions with only long-range dipole-dipole interactions. Extending previous work on the 2D kagome system, where discrete six-fold discrete degeneracy of the ground state was revealed [Holden et al. Phys. Rev. B 91, 224425 (2015)], we show that the 3D lattice exhibits a continuous degeneracy characterized by just two spherical angles involving six sublattice spin vectors. Application of a Heat Bath Monte Carlo algorithm shows that thermal fluctuations reduce this degeneracy at very low temperature in an order-by-disorder process. A magnetic field applied along directions of high symmetry also results in lifting the continuous degeneracy to a subset of states from the original set of ground states. Metropolis Monte Carlo simulation results are also presented on the temperature and system size dependence of the energy, specific heat, and magnetization, providing evidence for a phase transition at T $\simeq$ 0.38 (in units of the dipole strength). The results can be relevant to a class of magnetic compounds having the AuCu$_3$ crystal structure.
description: 13 pages, 23 figures
title: Absatzerkennung bei autonomen mobilen Robotern
Creators: name: Bechtel, Peter
name: Schatz, Andreas
name: Dieterle, Lars
name: Adamy, Jürgen
Publisher: name: De Gruyter
Year: 2021

description: In dieser Arbeit wird ein Absatzerkennungssystem für mobile Roboter vorgestellt, das die Gefahr des Absturzes an Absätzen ausschließt. Ausgehend von den allgemeinen Anforderungen wurde ein Sensorsystem, das auf einer Kombination von zwei Infrarotsensortypen basiert, und ein Fahralgorithmus zur Gefahrenvermeidung entwickelt. Die Methode ist weitgehend unabhängig vom Typ des radgetriebenen Roboters. Das System funktioniert ohne Vorwissen über das Aussehen der Absätze.
Anomaly cancellation in D=4, N=1 orientifolds and linear/chiral multiplet duality
Creators: name: Klein, Matthias
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been proposed that gauge and Kaehler anomalies in four-dimensional type IIB orientifolds are cancelled by a generalized Green-Schwarz mechanism involving exchange of twisted RR-fields. We explain how this can be understood using the well-known duality between linear and chiral multiplets. We find that all the twisted fields associated to the N=1 sectors and some of the fields associated to the N=2 sectors reside in linear multiplets. But there are no linear multiplets associated to order-two twists. Only the linear multiplets contribute to anomaly cancellation. This suffices to cancel all U(1) anomalies. In the case of Kaehler symmetries the complete SL(2,R) can be restored at the quantum level for all planes that are not fixed by an order-two twist.
description: 30 pages, Latex; v2: misprints corrected
A Corrective Training Algorithm for Adaptive Learning in Bag Generation
Creators: name: Chen, Hsin-Hsi
name: Lee, Yue-Shi
Publisher: name: arXiv
Year: 1994
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The sampling problem in training corpus is one of the major sources of errors in corpus-based applications. This paper proposes a corrective training algorithm to best-fit the run-time context domain in the application of bag generation. It shows which objects to be adjusted and how to adjust their probabilities. The resulting techniques are greatly simplified and the experimental results demonstrate the promising effects of the training algorithm from generic domain to specific domain. In general, these techniques can be easily extended to various language models and corpus-based applications.
description: 7 pages, uuencoded compressed PostScript file; extract with Unix uudecode and uncompress