cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A bounded homogeneous domain and a projective manifold are not relatives
Creators: name: Mossa, Roberto
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53D05, 53C55

description: Let $M_1$ and $M_2$ be two Kähler manifolds. One says that $M_1$ and $M_2$ are "relatives" if they share a non-trivial Kähler submanifold $S$, namely, if there exist two holomorphic and isometric immersions (Kähler immersions) $h_1: S -> M_1$ and $h_2: S -> M_2$. In this paper we show that a bounded homogeneous domain with a homogeneous Kähler metric and a projective Kähler manifold (i.e. a projective manifold endowed with the restriction of the Fubini-Study metric) are not relatives. Our result is a generalization of the result obtained by A. J. Di Scala and A. Loi (in "Kähler manifolds and their relatives", Ann. Sc. Norm. Super. Pisa Cl. Sci. (5) 9 3 (2010), 495-501) for the Bergman metrics.
description: 5 pages. arXiv admin note: text overlap with arXiv:math/0601739 by other authors
PHASE TYPE QUEUEING MODEL OF SERVER VACATION, REPAIR AND DEGRADING SERVICE WITH BREAKDOWN, STARTING FAILURE AND CLOSE-DOWN
Creators: name: G. Ayyappan
name: S. Meena
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Phase type Distribution
Markovian Arrival Process
Degrading Service
Server Vacation
Breakdown
Repair
Starting failure
Close-down
Matrix-analytic method

description: We consider a single server phase type queueing model with server vacation, repair, breakdown, degrading service, starting failure and closedown. When the arrival rate of the customer follows the Markovian Arrival Process (MAP) and the service rate of the server follows the phase-type distribution. If no one is in the system when the server is back from the vacation, then the server will wait until the customer arrives. If the customer arrives at the moment with no starting failure, then he provides service, otherwise the server immediately goes to the repair process. Here, the service rate declining until degradation fixed. After completion of K services the degradation is addressed. During the period of service, the server may get a breakdown at any moment, and then the server immediately goes for a repair process. After completing the service, he switches to the close-down process, and then he goes on vacation. Using the Matrix-Analytic method, The stationary probability vector representing the total number of customers in the system is examined. The analysis of the busy period, the mean waiting time, and cost analysis are discussed. A few significant performance measures are attained. Finally, some numerical examples are given.
A Load-Buffer Semantics for Total Store Ordering
Creators: name: Abdulla, Parosh Aziz
name: Atig, Mohamed Faouzi
name: Bouajjani, Ahmed
name: Ngo, Tuan Phong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: We address the problem of verifying safety properties of concurrent programs running over the Total Store Order (TSO) memory model. Known decision procedures for this model are based on complex encodings of store buffers as lossy channels. These procedures assume that the number of processes is fixed. However, it is important in general to prove the correctness of a system/algorithm in a parametric way with an arbitrarily large number of processes. In this paper, we introduce an alternative (yet equivalent) semantics to the classical one for the TSO semantics that is more amenable to efficient algorithmic verification and for the extension to parametric verification. For that, we adopt a dual view where load buffers are used instead of store buffers. The flow of information is now from the memory to load buffers. We show that this new semantics allows (1) to simplify drastically the safety analysis under TSO, (2) to obtain a spectacular gain in efficiency and scalability compared to existing procedures, and (3) to extend easily the decision procedure to the parametric case, which allows obtaining a new decidability result, and more importantly, a verification algorithm that is more general and more efficient in practice than the one for bounded instances.
description: Logic in computer science
POWER GENERALIZED DUS TRANSFORMATION IN WEIBULL AND LOMAX DISTRIBUTIONS
Creators: name: Beenu Thomas
name: V.M. Chacko
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: PGDUS transformation
Weibull Distribution
Moments
Lomax Distribution
Maximum likelihood estimator
Simulation

description: A strong need for an appropriate lifetime model arises in reliability analysis. A large number of lifetime distributions are available in the literature. To analyze reliability data, a more suitable lifetime distribution is plausible. Power Generalized DUS (PGDUS) transformation of the lifetime model gives a solution to fit the data with more precision. PGDUS transformation of the exponential distribution is the first attempt in this regard. This new class of distributions can be used for model series systems in which the components are distributed as DUS transformations of some lifetime model. This paper introduces two novel classes of distributions using PGDUS transformation, which is a generalization of DUS transformation, with Weibull and Lomax distributions as the baseline distributions. Some analytical properties like moments, moment generating function, characteristic function, cumulant generating function, quantile function, distribution of order statistics, and Rényi entropy are derived. The maximum likelihood estimation procedure is employed to estimate the unknown parameters. Moreover, a simulation study has been conducted, and data has been analyzed for each of the proposed distributions to demonstrate how well the distributions would perform in a real-life situation. In comparison with some other recent new models, the proposed distribution is found to be a better model.
Weighted omega-Restricted One Counter Automata
Creators: name: Droste, Manfred
name: Kuich, Werner
Publisher: name: arXiv
Year: 2017
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences
subject: F.1.1; F.4.3
subject: 68Q45, 68Q70 (Primary) 68Q42 (Secondary)

description: Let $S$ be a complete star-omega semiring and $Σ$ be an alphabet. For a weighted $ω$-restricted one-counter automaton $\mathcal{C}$ with set of states $\{1, \dots, n\}$, $n \geq 1$, we show that there exists a mixed algebraic system over a complete semiring-semimodule pair ${((S \ll Σ^* \gg)^{n\times n}, (S \ll Σ^ω\gg)^n)}$ such that the behavior $\Vert\mathcal{C} \Vert$ of $\mathcal{C}$ is a component of a solution of this system. In case the basic semiring is $\mathbb{B}$ or $\mathbb{N}^{\infty}$ we show that there exists a mixed context-free grammar that generates $\Vert\mathcal{C} \Vert$. The construction of the mixed context-free grammar from $\mathcal{C}$ is a generalization of the well-known triple construction in case of restricted one-counter automata and is called now triple-pair construction for $ω$-restricted one-counter automata.
Eine römische Aedicula von Carden an der Mosel
Creators: name: Schaaffhausen, Hermann
Publisher: name: Bonner Jahrbücher
Year: 2018

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 89 (1890): Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Fundamental Properties of Quaternion Spinors
Creators: name: Yefremov, Alexander P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences
subject: F.2.2
subject: 08A02 Relational systems, laws of composition

description: The interior structure of arbitrary sets of quaternion units is analyzed using general methods of the theory of matrices. It is shown that the units are composed of quadratic combinations of fundamental objects having a dual mathematical meaning as spinor couples and dyads locally describing 2D surfaces. A detailed study of algebraic relationships between the spinor sets belonging to different quaternion units is suggested as an initial step aimed at producing a self-consistent geometric image of spinor-surface distribution on the physical 3D space background.
description: 8 pages
Pushing for weighted tree automata
Creators: name: Hanneforth, Thomas
name: Maletti, Andreas
name: Quernheim, Daniel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences
subject: F.4.2; F.4.3
subject: 68Q45, 68Q25

description: A weight normalization procedure, commonly called pushing, is introduced for weighted tree automata (wta) over commutative semifields. The normalization preserves the recognized weighted tree language even for nondeterministic wta, but it is most useful for bottom-up deterministic wta, where it can be used for minimization and equivalence testing. In both applications a careful selection of the weights to be redistributed followed by normalization allows a reduction of the general problem to the corresponding problem for bottom-up deterministic unweighted tree automata. This approach was already successfully used by Mohri and Eisner for the minimization of deterministic weighted string automata. Moreover, the new equivalence test for two wta $M$ and $M'$ runs in time $\mathcal O((\lvert M \rvert + \lvert M'\rvert) \cdot \log {(\lvert Q\rvert + \lvert Q'\rvert)})$, where $Q$ and $Q'$ are the states of $M$ and $M'$, respectively, which improves the previously best run-time $\mathcal O(\lvert M \rvert \cdot \lvert M'\rvert)$.
Graver basis and proximity techniques for block-structured separable convex integer minimization problems
Creators: name: Hemmecke, Raymond
name: Köppe, Matthias
name: Weismantel, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C10

description: We consider N-fold 4-block decomposable integer programs, which simultaneously generalize N-fold integer programs and two-stage stochastic integer programs with N scenarios. In previous work [R. Hemmecke, M. Koeppe, R. Weismantel, A polynomial-time algorithm for optimizing over N-fold 4-block decomposable integer programs, Proc. IPCO 2010, Lecture Notes in Computer Science, vol. 6080, Springer, 2010, pp. 219--229], it was proved that for fixed blocks but variable N, these integer programs are polynomial-time solvable for any linear objective. We extend this result to the minimization of separable convex objective functions. Our algorithm combines Graver basis techniques with a proximity result [D.S. Hochbaum and J.G. Shanthikumar, Convex separable optimization is not much harder than linear optimization, J. ACM 37 (1990), 843--862], which allows us to use convex continuous optimization as a subroutine.
description: 16 pages. arXiv admin note: substantial text overlap with arXiv:0911.4055
Ratio Transformation Lomax Distribution with Applications
Creators: name: Shamshad Ur Rasool
name: S.P. Ahmad
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Ratio Transformation Lomax distribution
hazard rate function
moments
maximum likelihood estimation

description: It has been noted in the literature on probability theory that the classical probability distributions do not adequately fit real-world data and do not exhibit non-monotonic hazard rate behavior. To overcome this limitation, researchers are focusing on the improvement of these distributions. In this manuscript, we have introduced a new probability model called Ratio Transformation Lomax Distribution (RTLD) as a new generalization of Lomax distribution. A thorough mathematical analysis of the new distribution is provided in closed form such as density function, distribution function, the r-th moment, survival function, hazard function, moment generating function, generalized entropy and also the order statistics. The new model’s parameters are calculated using the method of maximum likelihood estimation. The proposed distribution’s performance and adaptability is backed by three sets of real lifetime data as well as simulated data.
Defect modes properties in periodic lossy multilayer containing negative index materials with symmetric and asymmetric geometric structures
Creators: name: Aghajamali, Alireza
name: Javanmardi, Behnam
name: Barati, Mahmood
name: Wu, Chien-Jang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper the characteristic matrix method is used to study the propagation of electromagnetic waves through one-dimensional lossy photonic crystals composed of negative and positive refractive index material layers with symmetric and asymmetric geometric structures with a defect layer at the center of the structure. First, the positive index material defect layer is considered, and the effects of the polarization and the angle of incidence on the defect mode in the transmission spectra of the both structures are investigated. The results show that the number of the defect modes in the transmission spectra depends on the geometry (symmetric or asymmetric) of the structure. In addition, it is shown that the defect mode frequency increases as the angle of incidence increases. This property is independent of the geometry of the structure. Then, for normal incidence, the negative index material defect layer is considered, and the properties of defect modes for both structures are investigated. The results can lead to designing new types of transmission narrow filters.
description: This paper has been withdrawn by the author
Double parton correlations in constituent quark models
Creators: name: Rinaldi, M.
name: Scopetta, S.
name: Vento, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Double parton correlations, having effects on the double parton scattering processes occurring in high-energy hadron-hadron collisions, for example at the LHC, are studied in the valence quark region, within constituent quark models. In this framework, two particle correlations are present without any additional prescription, at variance with what happens, for example, in independent particle models, such as the MIT bag model in its simplest version. From the present analysis, conclusions similar to the ones obtained recenty in a modified version of the bag model can be drawn: correlations in the longitudinal momenta of the active quarks are found to be sizable, while those in transverse momentum are much smaller. However, the used framework allows to understand clearly the dynamical origin of the correlations. In particular, it is shown that the small size of the correlations in transverse momentum is a model dependent result, which would not occur if models with sizable quark orbital angular momentum were used to describe the proton. Our analysis permits therefore to clarify the dynamical origin of the double parton correlations and to establish which, among the features of the results, are model independent. The possibility to test experimentally the studied effects is discussed.
description: 16 pages, 7 figures; references added; a figure added; conclusions unchanged. Final version accepted for publication in Phys. Rev. D
Additional file 2 of Application of fused-grid-based CYP-Template systems for genotoxic substances to understand the metabolisms
Creators: name: Yamazoe, Yasushi
name: Murayama, Norie
name: Kawamura, Tomoko
name: Yamada, Takashi
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Supplement Fig. 2 Interactions of IQ, MeIQ and MeIQx on CYP2C9, CYP2C8, CYP3A4 and CYP1A2 Templates. Placements on Templates of CYP2C9 for IQ, MeIQ and MeIQx N-oxidations (A-C), of CYP2C8 for IQ N-oxidation (D), of CYP3A4 for IQ N-oxidation (E) and N-demethylation (F), and of CYP1A2 for the IQ N-demethylation (G) and N-oxidations (H and I). Dark arrows indicate the possible causes of defects
Additional file 3 of Application of fused-grid-based CYP-Template systems for genotoxic substances to understand the metabolisms
Creators: name: Yamazoe, Yasushi
name: Murayama, Norie
name: Kawamura, Tomoko
name: Yamada, Takashi
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Supplement Fig. 3 Rodent CYP1A1-selective Pier-sitting (Position 52’). Placements of PCB126 for the 4-OH-TCB (A and B) and 4-OH-PCB formations (C), of naringenin for the inhibition (D and E), and of 2-chlorodibenzo-p-dioxin (F, G and H) on CYP1A1 Template
Generalised Mermin-type non-locality arguments
Creators: name: Gogioso, Stefano
name: Zeng, William
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Logic in Computer Science (cs.LO)
subject: Category Theory (math.CT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.1.1; F.3.2

description: We broadly generalise Mermin-type arguments on GHZ states, and we provide exact group-theoretic conditions for non-locality to be achieved. Our results are of interest in quantum foundations, where they yield a new hierarchy of quantum-realisable All-vs-Nothing arguments. They are also of interest to quantum protocols, where they find immediate application to a non-trivial extension of the hybrid quantum-classical secret sharing scheme of Hillery, Bužek and Berthiaume (HBB). Our proofs are carried out in the graphical language of string diagrams for dagger compact categories, and their validity extends beyond quantum theory to any theory featuring the relevant algebraic structures.
Petri Automata
Creators: name: Brunet, Paul
name: Pous, Damien
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.3; F.1.1
subject: 68Q45

description: Kleene algebra axioms are complete with respect to both language models and binary relation models. In particular, two regular expressions recognise the same language if and only if they are universally equivalent in the model of binary relations. We consider Kleene allegories, i.e., Kleene algebras with two additional operations and a constant which are natural in binary relation models: intersection, converse, and the full relation. While regular languages are closed under those operations, the above characterisation breaks. Putting together a few results from the literature, we give a characterisation in terms of languages of directed and labelled graphs. By taking inspiration from Petri nets, we design a finite automata model, Petri automata, allowing to recognise such graphs. We prove a Kleene theorem for this automata model: the sets of graphs recognisable by Petri automata are precisely the sets of graphs definable through the extended regular expressions we consider. Petri automata allow us to obtain decidability of identity-free relational Kleene lattices, i.e., the equational theory generated by binary relations on the signature of regular expressions with intersection, but where one forbids unit. This restriction is used to ensure that the corresponding graphs are acyclic. We actually show that this decision problem is EXPSPACE-complete.
Holographic Thermalization from Kerr-AdS
Creators: name: Aref'eva, Irina
name: Bagrov, Andrey
name: Koshelev, Alexey S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study thermalization of a strongly coupled theory holographically dual to a thin shell of null dust with non-zero angular momentum collapsing to Kerr-AdS. We calculate thermalization time for two point correlation functions. It happens that in the 3-dimensional case the thermalization time is just proportional to the distance between points where the correlator is evaluated. This is a very surprising and rather unexpected generalization of the same relation in the case of zero momentum.
description: 17 pages, 8 figures, uses jheppub.sty; v2: refs. added, matches the version accepted for publication in JHEP
PROBABILISTIC ANALYSIS OF A TWO UNIT COLD STANDBY SYSTEM WITH REPAIR AND REPLACEMENT POLICIES
Creators: name: Chaudhary, Alka
name: Jaiswal, Suman
name: Sharma, Nidhi
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Cold standby
replacement policy
MTSF
regenerative point
availability
transition probability and mean sojourn time

description: The present paper deals with two identical units, one is operative and the other of which other is kept on cold standby. If the operative unit fails, it goes under repair and after repair, it is not considered as good as new. If the unit fails after the first repair, it is replaced with a new unit. A single repairman is always available with the system to repair a failed unit. Failure time, repair time and replacement time distributions are taken as exponential to reduce the complexity of the system model. By using the regenerative point technique, the various important measures of system effectiveness have been obtained and are shown with the help of graph.
A Complete Quantitative Deduction System for the Bisimilarity Distance on Markov Chains
Creators: name: Bacci, Giorgio
name: Bacci, Giovanni
name: Larsen, Kim G.
name: Mardare, Radu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: In this paper we propose a complete axiomatization of the bisimilarity distance of Desharnais et al. for the class of finite labelled Markov chains. Our axiomatization is given in the style of a quantitative extension of equational logic recently proposed by Mardare, Panangaden, and Plotkin (LICS 2016) that uses equality relations $t \equiv_\varepsilon s$ indexed by rationals, expressing that `$t$ is approximately equal to $s$ up to an error $\varepsilon$'. Notably, our quantitative deduction system extends in a natural way the equational system for probabilistic bisimilarity given by Stark and Smolka by introducing an axiom for dealing with the Kantorovich distance between probability distributions. The axiomatization is then used to propose a metric extension of a Kleene's style representation theorem for finite labelled Markov chains, that was proposed (in a more general coalgebraic fashion) by Silva et al. (Inf. Comput. 2011).
description: Logical Methods in Computer Science
RECOVERY PERIOD OF AIR TRANSPORTATION: A FORECAST WITH VECTOR ERROR CORRECTION MODEL
Creators: name: Tüzün Tolga İNan
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: passenger load factor
cargo load factor
vector error correction model
air transportation
recovery period

description: Air transport is the primary module of civil aviation and because of its nature, air transport has been simultaneously affected by Pandemics and crises. The influence of COVID-19 was more devastating than the other Pandemics and crises due to its global effect. This effect has continued a long period that still this effect exists now with a slight trend. The aim of this study is to analyse the selected variables that shows the past and future trend of air transportation related to operational and financial status. These variables are the primary ones that can define the countries' general status in air transport. The forecasting results are examined by 9-months forecasting with Vector Error Correction Model. It is forecasted that slightly decreasing trend will proceed in the following 9months for passenger transportation due to fall and winter seasons. It is forecasted that slightly upward trend will proceed in the following 3-months and slightly decreased in the other 6-months for cargo transportation due to potential economic crisis in 2023. The originality of this paper is the first research related to analyse passenger and freight transportation together with the operational and financial parameters that defined in the sample of data and methodology sections.
FARZAND TARBIYASIDA OTA-ONALIK MA'SULIYATI
Creators: name: Rustamova, Munira
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqola farzand tarbiyasi va unda ota-onaning o’rni, ma’suliyati hamda vazifa va burchlari masalalariga bag’ishlanadi. Shuningdek ushbu maqolada farzand tarbiyasi bu shunchaki tajriba, oddiy ko‘rsatma va bilimlar jamlanmasi emas, balki o‘z ichiga diniy-axloqiy bilimlar, tibbiyot, etika, psixologiya, pedagogika kabi sohalariga oid bilimlarni ham qamrab oladigan murakkab jarayon ekanligi ta’kidlangan. Shu boisdan bu kichik tadqiqot tarbiyachilar, pedagoglar, psixologlar va ota-onalar uchun muhim ahamiyatga ega.
Wonderful compactifications of Bruhat-Tits buildings
Creators: name: Remy, Bertrand
name: Thuillier, Amaury
name: Werner, Annette
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Given a split semisimple group over a local field, we consider the maximal Satake-Berkovich compactification of the corresponding Euclidean building. We prove that it can be equivariantly identified with the compactification which we get by embedding the building in the Berkovich analytic space associated to the wonderful compactification of the group. The construction of this embedding map is achieved over a general non-archimedean complete ground field. The relationship between the structures at infinity, one coming from strata of the wonderful compactification and the other from Bruhat-Tits buildings, is also investigated.
Additional file 1 of The relationship between job stress and patient safety culture among nurses: a systematic review
Creators: name: Zabin, Loai M.
name: Zaitoun, Rasha S. Abu
name: Sweity, Esa M.
name: de Tantillo, Lila
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1. PubMed search strategy.
Additional file 1 of SPIOMET4HEALTH—efficacy, tolerability and safety of lifestyle intervention plus a fixed dose combination of spironolactone, pioglitazone and metformin (SPIOMET) for adolescent girls and young women with polycystic ovary syndrome: study protocol for a multicentre, randomised, double-blind, placebo-controlled, four-arm, parallel-group, phase II clinical trial
Creators: name: Garcia-Beltran, Cristina
name: Malpique, Rita
name: Andersen, Marianne S.
name: Bas, Firdevs
name: Bassols, Judit
name: Darendeliler, Feyza
name: Díaz, Marta
name: Dieris, Barbara
name: Fanelli, Flaminia
name: Fröhlich-Reiterer, Elke
name: Gambineri, Alessandra
name: Glintborg, Dorte
name: López-Bermejo, Abel
name: Mann, Christopher
name: Marin, Silvia
name: Obermayer-Pietsch, Barbara
name: Ødegård, Rønnaug
name: Ravn, Pernille
name: Reinehr, Thomas
name: Renzulli, Matteo
name: Salvador, Cristina
name: Singer, Viola
name: Vanky, Eszter
name: Torres, Juan Vicente
name: Yildiz, Melek
name: de Zegher, Francis
name: Ibáñez, Lourdes
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Virology
subject: Computational Biology

description: Additional file 1. Original funding documentation.
Highly-complex optical signal generation using electro-optical systems with non-linear, non-invertible transmission functions
Creators: name: Suárez-Vargas, José J.
name: Márquez, Bicky A.
name: González, Jorge A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a scheme whereby a static non-linear, non-invertible transmission function performed by the electro-optic Mach-Zehnder modulator produces highly complex optical chaos. The scheme allows the deterministic transformation of low-dimensional band-limited chaotic signals into much higher-dimensional structures with broadband spectra and without using any delay elements or feedback. Standard benchmark tests show that all the considered complexity indices are highly increased due to this transformation in a controlled fashion. This mechanism allows the design of simple optoelectronic delayed oscillators with extremely complex chaotic output.
description: 4 pages, 5 figures. To appear in Applied Physics Letters (August 2012)
RELIABILITY ANALYSIS OF PARALLEL SYSTEM USING PRIORITY TO PM OVER INSPECTION
Creators: name: Dabas, Neetu
name: Reetu Rathee
name: Abhishek Sheoran
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Parallel system
priority
inspection
semi-Markov
regenerative points
repair activities
profit

description: Reliability optimization of a system is an extant problem. By solving these problems, new methodologies are obtained that have invent new engineering technology and changes the management perspective. Aim of the reliability analysis is to study the failure mechanisms of a system and and outcomes of the analysis serve to identify design solutions and maintenance actions for preventing the failures from occurring. So, it is used to evaluate and improve the quality of products, processes, and systems. Measurement, planning, and improvement in the reliability are the things which are well do in any business but only when efforts are focused on important problems which are highlighted by monetary values, improve reliability, reduce unreliability costs, generate more profit, and get more business. To serve this purpose, present study investigates a parallel system of two identical units which is based on several assumptions like, the system is served by one serviceman who is immediately available for service when it will call. System failure rate is fix and the failure type (repairable or replaceable) is known by inspection. The failure and repair activities are stochastically independent, and their rates are exponentially distributed. Priority to PM over inspection is given in the system. Several measures of reliability effectiveness like MTSF, availability and cost-benefit analysis of the system are obtained by semi-Markov and regenerative point approach. Reliability characteristics parameters are random variables, and results are obtained in the form of graphs and tables by changing the values of these variables one by one, while keeping other variables constant at that point. From the results we conclude how to make the given system more profitable. Findings of present system model shows that when the failure rate is low then the system obtained more profit by increasing preventive maintenance rate. On the other hand, when failure rate going high then we make the system more profitable by increasing inspection rate. These insights of modelling and analysis helps the system developers and managers to make good choices of action against specified criteria that managing engineered products and industrial plants safely and reliably. This leads to more profit and making a business more growing.
Reliability Measures of a 2-out-of-3: G System with Priority and Failure of Service Facility during Repair
Creators: name: , Anuradha
name: S.C. Malik
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: 2-out-of-3 System
Preventive Maintenance
Treatment Rate
Priority
Failure of Service Facility and Reliability Measures

description: Aim. The objective of this paper is to describe a particular case of the k-out-of-n: G system for k=2 and n=3 with different repair policies and to discuss the application of the proposed in a toxic waste incinerator. Methods. The system has all the three units identical in nature. The system model is developed using semi-Markov process and regenerative point technique. The preventive maintenance and repair activities of the units are carried out immediately by a single service facility whenever desires. The service facility is subjected to failure during repair of the units while it does preventive maintenance of the units without any problem. The failed service facility undergoes for treatment to restore its efficiency to perform the remaining jobs with full capacity. The provision of priority to preventive maintenance of the units has been made over the repair in order to avoid the earlier failure of the system. Findings. The measures that can affect and enhance the performance of the system have been discussed for arbitrary values of the rates which follow some arbitrary distributions including the negative exponential. The system is analysed in steady state and the graphs have been drawn to see the effect of different transition rates such as failure rate, preventive maintenance rate, treatment rate, and repair rate of the units on reliability measures and the profit. The study reveals that there is a decline in these measures with the increase of the rate by which unit undergoes for preventive maintenance, failure rates of the units and service facility. However, the values of reliability measures MTSF, availability and profit function keep on increasing with the increase of treatment rate, repair rate of the unit and preventive maintenance completion rate. The profit increases if the rate with which a unit completes its preventive maintenance. Hence, implementing the preventive maintenance repair policy for a 2-out-of-3 system is beneficial as it increases the availability and hence the profit of the system.
AdS/CFT superconductors with Power Maxwell electrodynamics: reminiscent of the Meissner effect
Creators: name: Roychowdhury, Dibakar
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Superconductivity (cond-mat.supr-con)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Based on an analytic scheme and neglecting the back reaction effect several crucial properties of holographic $ s $- wave superconductors have been investigated in the presence of an external magnetic field in the background of a $ D $ dimensional Schwarzschild AdS space time. Inspired by low energy limit of heterotic string theory, in the present paper we replace the conventional Maxwell action by a Power Maxwell action. Immersing the holographic superconductors in an external static magnetic field the spatially dependent condensate solutions have been obtained analytically. Interestingly enough it is observed that condensation can form only below a certain critical field strength ($ B_c $). Finally, and most importantly it is observed that the value of this critical field strength increases as the mass of the scalar particles gets higher, which indicates the onset of a harder condensation.
description: Latex, 13 pages, To appear in Phys. Lett. B
Finding Hamilton cycles in random intersection graphs
Creators: name: Rybarczyk, Katarzyna
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C80, 05C85

description: The construction of the random intersection graph model is based on a random family of sets. Such structures, which are derived from intersections of sets, appear in a natural manner in many applications. In this article we study the problem of finding a Hamilton cycle in a random intersection graph. To this end we analyse a classical algorithm for finding Hamilton cycles in random graphs (algorithm HAM) and study its efficiency on graphs from a family of random intersection graphs (denoted here by G(n,m,p)). We prove that the threshold function for the property of HAM constructing a Hamilton cycle in G(n,m,p) is the same as the threshold function for the minimum degree at least two. Until now, known algorithms for finding Hamilton cycles in G(n,m,p) were designed to work in very small ranges of parameters and, unlike HAM, used the structure of the family of random sets.
Additional file 1 of Neuroprotective effect of nose-to-brain delivery of Asiatic acid in solid lipid nanoparticles and its mechanisms against memory dysfunction induced by Amyloid Beta1-42 in mice
Creators: name: Islamie, Ridho
name: Myint, Su Lwin Lwin
name: Rojanaratha, Tissana
name: Ritthidej, Garnpimol
name: Wanakhachornkrai, Oraphan
name: Wattanathamsan, Onsurang
name: Rodsiri, Ratchanee
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health

description: Additional file 1.
RELIABILITY MODELING OF TWO-UNIT GAS TURBINE SYSTEM CONSIDERING THE EFFECT OF HUMIDITY
Creators: name: Pinki
name: Singh, Dalip
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Gas Turbine
Steam Turbine
Failure Rate
Reliability Measures

description: Aim. The purpose of this paper is to find the reliability measures and profit of a two-unit gas turbine power generating system incorporated with one gas turbine and one steam turbine. Effects of different humidity condition (humidity ≤/> 50%) are taken into consideration by fixing the range of temperature (5℃-25℃) for developing the model. At initial stage, both units (gas turbine and steam turbine) are in operative mode. If steam turbine fails, gas turbine remains in operative mode but if gas turbine fails, system goes to down state and when both unit fails, system fails. In this system we assume that failure time distribution is exponentially distributed while repair time distribution is arbitrary. Methods. In this paper we use the Laplace transform for mathematical analysis, and semimarkov process and regenerative point technique to investigate reliability measures and profit of the system. Findings. The system is analysed in steady state and different reliability measures such as mean time to system failure, availability for different cycles and for different humidity conditions, busy period, down time of the system etc. are calculated and the graphs have been drawn to see the effect of different transition rates such as failure rate and repair rate of the units for different humidity conditions on reliability measures and the profit for particular case is evaluated using the information/data collected from gas turbine power generating system located at Bawana, Delhi, India. Conclusion. Our finding shows that mean time to system failure and availability when both turbines are working decreases with increase in any one of failure rate while availability when only gas turbine is working increases with increase in steam turbine failure rate and profit for plant decreases with increase in failure rates. From this we concluded that availability for the fixed range of temperature (5℃-25℃) is higher when humidity is >50% as compared to when humidity is ≤50%. Thus, a comprehensive study of gas turbine system may be helpful to those who are involved in power generating industry.
Thicket Density
Creators: name: Bhaskar, Siddharth
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: F.2.m
subject: 03C45, 05C35

description: We define a new type of "shatter function" for set systems that satisfies a Sauer-Shelah type dichotomy, but whose polynomial-growth case is governed by Shelah's 2-rank instead of VC dimension. We identify the rate of growth of this shatter function, the quantity analogous to VC density, with Shelah's $ω$-rank.
description: 15 pages, 7 figures
REPRESENTATION OF CERTAIN LIFETIME MODELS VIA SEQUENCES OF SPECIAL NUMBERS
Creators: name: Genest, Christian
name: Kolev, Nikolai
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Bell numbers
Bernoulli numbers
Gould–Hopper polynomials
law of uniform seniority
lifetime distributions
Stirling numbers of the second kind
survival functions

description: Stimulated by the work of Rzqdkowski et al. (2015, J. Nonlinear Math. Phys., 22 (2015), 374–380), the authors derive representations for certain classes of univariate and bivariate lifetime distributions in terms of sequences of Bell, Bernoulli, and Stirling numbers of the second kind, their generalizations, and associated polynomials. Gould–Hopper polynomials are used in the bivariate case, leading to representations for large classes of distributions satisfying a law of uniform seniority for dependent lives formulated by Genest and Kolev (Scan. Act. J., 2021-8 (2021), 726–743).
Particle model for skyrmions in metallic chiral magnets: dynamics, pinning and creep
Creators: name: Lin, Shi-Zeng
name: Reichhardt, Charles
name: Batista, Cristian D.
name: Saxena, Avadh
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently spin textures called skyrmions have been discovered in certain chiral magnetic materials without spatial inversion symmetry, and have attracted enormous attention due to their promising application in spintronics since only a low applied current is necessary to drive their motion. When a conduction electron moves around the skyrmion, its spin is fully polarized by the spin texture and acquires a quantized phase; thus, the skyrmion yields an emergent electrodynamics that in turn determines skyrmion motion and gives rise to a finite Hall angle. While Skyrmions behave as particles, no particle level description of their dynamics exists to date. Such a model would have tremendous impact on understanding skyrmion dynamics by theoretical analysis and computational modeling. Here we derive the equation of motion from a microscopic continuum model and obtain the short-range interaction between skyrmions, and the interaction between skyrmions and defects. Skyrmions also experience a Magnus force perpendicular to their velocity due to the underlying emergent electromagnetic field. We validate the equation of motion by studying the depinning transition using both the particle and the continuum models. By using the particle description, we explain the recent experimental observations of the rotation of a skyrmion lattice in the presence of a temperature gradient. We also predict quantum and thermal creep motion of skyrmions in the pinning potential.
description: 8 pages and 7 figures
SELECTION PROCEDURE FOR SKIP LOT SAMPLING PLAN OF TYPE SKSP-R BASED ON PERCENTILES OF EXPONENTIATED RAYLEIGH DISTRIBUTION
Creators: name: P. Umamaheswari
name: K. Pradeepa Veerakumari
name: S.Suganya
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Exponentiated Rayleigh Distribution
Percentiles
Life tests
Single Sampling Plan
SkSP –R

description: In this study, acceptance sampling techniques are effective for reducing the cost and time of the submitted lots. In this hectic environment, a high level of product reliability and quality assurance is expected. Use the abbreviated life tests in the acceptance sampling plan as a result. To make a choice on the product, sampling plans with time-truncated life tests are used. This study uses percentiles under the exponentiated Rayleigh distribution to build a skip lot sampling plan of the SkSP-R type for a life test. A truncated life test may be carried out to determine the minimum sample size to guarantee a specific percentage life time of products. In particular, this paper highlights the construction of the Skip lot Sampling Plan of the type SkSP-R by considering the Singe Sampling Plan (SSP) and Double Sampling plan(DSP) as reference plans for life tests based on percentiles of Exponentiated Rayleigh Distribution (ERD). Calculations are made for various quality levels to determine the minimum sample size, prescribed ratio, and operational characteristic values. The proposed sampling plan, which is appropriate for the manufacturing industries for the selection of samples, is also analyzed in terms of its parameters and metrics. Illustrations are provided to help you comprehend the plan. In addition, it addresses the feasibility of the new strategy.
$\overline{M}_{1,n}$ is usually not uniruled in characteristic $p$
Creators: name: Sawin, Will
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M20

description: Using etale cohomology, we define a birational invariant for varieties in characteristic $p$ that serves as an obstruction to uniruledness - a variant on an obstruction to unirationality due to Ekedahl. We apply this to $\overline{M}_{1,n}$ and show that $\overline{M}_{1,n}$ is not uniruled in characteristic $p$ as long as $n \geq p \geq 11$. To do this, we use Deligne's description of the etale cohomology of $\overline{M}_{1,n}$ and apply the theory of congruences between modular forms.
description: 10 pages, published version
SOME USEFUL PATHWAY MODELS FOR RELIABILITY ANALYSIS
Creators: name: T. Princy
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Pathway model
reliability analysis
hazard function
entropy optimization

description: In this paper, we first discuss pathway model in general. Then a special case for the real scalar variable is considered. This special case is relevant in reliability problems. In the pathway model, an arbitrary function is introduced so that the hazard function resulting from this model is of a given shape such as a bathtub type hazard function. The model is also derived by using an entropy optimization procedure by introducing a new entropy measure. It is shown that a large number of densities in current use are connected to the pathway model. Certain combinations of pathway densities resulting in hazard functions of desired shapes, multi-component failure situation etc are examined from a reliability point of view. For further use of the proposed model, the unknown parameters are estimated using the method of maximum likelihood estimation. The behaviour of the reliability measure has been observed graphically for arbitrary values of the parameters related to the number of components and operating time.
Deep carbon cycle constrained by carbonate solubility.
Creators: name: Farsang, Stefan
name: Louvel, Marion
name: Zhao, Chaoshuai
name: Mezouar, Mohamed
name: Rosa, Angelika D
name: Widmer, Remo N
name: Feng, Xiaolei
name: Liu, Jin
name: Redfern, Simon A T
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Earth's deep carbon cycle affects atmospheric CO2, climate, and habitability. Owing to the extreme solubility of CaCO3, aqueous fluids released from the subducting slab could extract all carbon from the slab. However, recycling efficiency is estimated at only around 40%. Data from carbonate inclusions, petrology, and Mg isotope systematics indicate Ca2+ in carbonates is replaced by Mg2+ and other cations during subduction. Here we determined the solubility of dolomite [CaMg(CO3)2] and rhodochrosite (MnCO3), and put an upper limit on that of magnesite (MgCO3) under subduction zone conditions. Solubility decreases at least two orders of magnitude as carbonates become Mg-rich. This decreased solubility, coupled with heterogeneity of carbon and water subduction, may explain discrepancies in carbon recycling estimates. Over a range of slab settings, we find aqueous dissolution responsible for mobilizing 10 to 92% of slab carbon. Globally, aqueous fluids mobilise [Formula: see text]% ([Formula: see text] Mt/yr) of subducted carbon from subducting slabs.