bluuebunny/crossref_metadata_2025_split huggingface dataset:
Iconicizing Kingship in Elizabethan England: Strategic Acting by Queen Elizabeth I
Authors: Kizelbach Urszula 
Published: April 2013

Abstract
Renaissance England is often discussed in the context of theatre and theatrical acting. The fact is that Renaissance monarchs, too, viewed kingship in terms of theatrical display and public performance. Such is the nature of royalty presented by King James I in Basilicon Doron. Queen Elizabeth I was playing all her life. Faced with the problem of her femininity in the world of men, as well as her ambivalent hereditary rights as a member of the Tudor dynasty, she focused on legitimizing her reign through playing different roles - she played the fearful king, the loving queen, she even played Virgin Mary. But Elizabeth emerges as the most stunning actress when she plays herself. On her summer visit to Wanstead in 1578 she took an active part in the pageant “The lady of May”, playing herself, “Good Queen Bess”, which Sir Philip Sidney depicted in his pastoral romance The lady of May. In this way, Elizabeth became her own icon. This paper provides instances of the Queen’s political role play in a historical and socio-cultural context of the time.
“The Undiscovered Country”, “A Kind Behind the Door”, “Neverland”, or “A Small Unfocused Blur”: Uncanny Literary Definitions of Death
Authors: Małecka Katarzyna 
Published: April 2013

Abstract
Known yet unknown, undiscovered yet constantly discovered and re-discovered, death has always been a gold mine providing ideas, work and wages for scientists, sociologists, philosophers, artists, literary critics, and many others who find life’s provisionality in any way “uncanny”. This article looks at select literary definitions of death that present mortality as a concept both familiar and unfamiliar, comforting and discomforting, domestic and strange. Like the Freudian term “uncanny”, the nature of mortality is complex, mysterious and elusive. As Terry Eagleton (2003: 211) points out, “[d]eath is both alien and intimate to us, neither wholly strange nor purely one’s own”. While some of Freud’s ideas from his essay “The ‘Uncanny’” are used as the basis for discussion here, this analysis is not limited to a psychoanalytic perspective and includes psychological, sociological, medical and literary references which help explore different aspects of death in literature.
Weak forms of open mappings and α -topology
Authors: Duszyński Zbigniew 
Published: April 2013

Abstract
The following notations associated with a mapping f : (X, τ) → (Y, σ) have been introduced in [D. S. Janković: A note on mappings of extremely disconnected spaces, Acta Math. Hungar. (1985), 83-92]: where for each x ∊ X. Interrelationships between well-known openness-type properties (a.o.S., w.o., -openness, a.o.W.) for f, f*, fα, fα are studied.
A category analogue of the generalization of Lebesgue density topology
Authors: Wojdowski Wojciech 
Published: April 2013

Abstract
. A notion of AI -topology, a generalization of Wilczy´nski’s I-density topology (see [Wilczy´nski, W.: A generalization of the density topology, Real. Anal. Exchange 8 (1982-1983), 16-20] is introduced. The notion is based on his reformulation of the definition od Lebesgue density point. We consider a category version of the topology, which is a category analogue of the notion of an Ad- -density topology on the real line given in [Wojdowski, W.: A generalization ofdensity topology, Real. Anal. Exchange 32 (2006/2007), 1-10]. We also discuss the properties of continuous functions with respect to the topology.
On strongly countably continuous functions
Authors: Horbaczewska Gražyna 
Published: April 2013

Abstract
A real-valued function f on R is strongly countably continuous provided that there is a sequence of continuous functions (fn)n∈N such that the graph of f is contained in the union of the graphs of fn.
Some examples of interesting strongly countably continuous functions are given: one for which the inverse function is not strongly countably continuous, another which is an additive discontinuous function with a big image and a function which is approximately and I-approximately continuous, but it is not strongly countably continuous.
Existence of asymptotically periodic solutions of scalar Volterra difference equations
Authors: Diblík Josef , Růžičková Miroslava , Schmeidel Ewa 
Published: April 2013

Abstract
There is used a version of Schauder’s fixed point theorem to prove the existence of asymptotically periodic solutions of a scalar Volterra difference equation. Along with the existence of asymptotically periodic solutions, sufficient conditions for the nonexistence of such solutions are derived. Results are illustrated on examples.
Discrete-time Cohen-Grossberg neural networks with transmission delays and impulses
Authors: Mohamad Sannay , Akça Haydar , Covachev Valéry 
Published: April 2013

Abstract
A discrete-time analogue is formulated for an impulsive Cohen- -Grossberg neural network with transmission delay in a manner in which the global exponential stability characterisitics of a unique equilibrium point of the network are preserved. The formulation is based on extending the existing semidiscretization method that has been implemented for computer simulations of neural networks with linear stabilizing feedback terms. The exponential convergence in the p-norm of the analogue towards the unique equilibrium point is analysed by exploiting an appropriate Lyapunov sequence and properties of an M-matrix. The main result yields a Lyapunov exponent that involves the magnitude and frequency of the impulses. One can use the result for deriving the exponential stability of non-impulsive discrete-time neural networks, and also for simulating the exponential stability of impulsive and non-impulsive continuous-time networks.
Parametrization for some boundary value problems of interpolation type
Authors: Rontó Miklós , Shchobak Natalia 
Published: April 2013

Abstract
We obtain some results concerning the investigation of two-dimensional non-linear boundary value problems of interpolation type. We show that it is useful to reduce the given boundary value problem, using an appropriate substitution, to a parametrized boundary value problem containing some unknown scalar parameter in the boundary conditions. To study the transformed parametrized problem, we use a method which is based upon special types of successive approximations constructed in an analytic form.
A telescoping principle for oscillation of the second order half-linear dynamic equations on time scales
Authors: Vítovec Jiří 
Published: April 2013

Abstract
. We establish the so-called “telescoping principle” for oscillation of the second order half-linear dynamic equation [r(t)Φ(x<sup>Δ</sup>)]<sup>Δ</sup> + c(t)Φ(x<sup>σ</sup>) = 0 on a time scale. This principle provides a method enabling us to construct many new oscillatory equations. Unlike previous works concerning the telescoping principle, we formulate some oscillation results under the weaker assumption r(t) ≠ 0 (instead r(t) > 0).
A Helly theorem for functions with values in metric spaces
Authors: Duchoň Miloslav , Maličký Peter 
Published: April 2013

Abstract
We present a Helly type theorem for sequences of functions with values in metric spaces and apply it to representations of some mappings on the space of continuous functions. A generalization of the Riesz theorem is formulated and proved. More concretely, a representation of certain majored linear operators on the space of continuous functions into a complete metric space.
Mathematical model of physical RNGs based on coherent sampling
Authors: Bernard Florent , Fischer Viktor , Valtchanov Boyan 
Published: April 2013

ABSTRACT
Random number generators represent one of basic cryptographic primitives used in creating cryptographic protocols. Their security evaluation represents very important part in the design, implementation and employment phase of the generator. One of important security requirements is the existence of a mathematical model describing the physical noise source and the statistical properties of the digitized noise derived from it. The aim of this paper is to propose the model of a class of generators using two jittery clocks with rationally related frequencies. The clock signals with related frequencies can be obtained using phase-locked loops, delay-locked loops or ring oscillators with adjusted oscillation periods. The proposed mathematical model is used to provide entropy per bit estimators and expected bias on the generated sequence. The model is validated by hardware experiments.
Cryptanalysis of a hash function based on isotopy of quasigroups
Authors: Slaminková Ivana , Vojvoda Milan 
Published: April 2013

ABSTRACT
This paper deals with cryptanalysis of one hash function based on isotopy of quasigroups [J. Dvorský, E. Ochodková, V. Snášel: Hash functionbased on quasigroups, in: Proc. of Mikulàšska kryptobesídka, Praha, 2001, pp. 27-36. (In Czech)], [J. Dvorský, E. Ochodková, V. Snášel: Hash functionsbased on large quasigroups, in: Proc. of Velikonoční kryptologie, Brno, 2002, pp. 1-8. (In Czech)]. Our work enhances the paper [M. Vojvoda: Cryptanalysisof one hash function based on quasigroup, Tatra Mt. Math. Publ. 29 (2004), 173-181], where the simplified studied hash function, based only on the quasigroup of modular subtraction, was successfully cryptanalysed. In this paper we show how to construct collisions, 2nd preimages, and also preimages for the full hash function based on isotopy of quasigroups.
Results of Ukrainian national public cryptographic competition
Authors: Oliynykov Roman , Gorbenko Ivan , Dolgov Viktor , Ruzhentsev Viktor 
Published: April 2013

Abstract
Five symmetric block ciphers were proposed to Ukrainian national public cryptographic competition. Developers used different methods for achiev- ing security and performance of the algorithms. An overview of proposed sym- metric block ciphers and results of their security analysis is given in this paper.
On chosen target forced prefix preimage resistance
Authors: Rjaško Michal 
Published: April 2013

Abstract
In this paper we analyze the Chosen Target Forced Prefix (CTFP) preimage resistance security notion for hash functions firstly introduced in [Kelsey, J.-Kohno, T.: Herding hash functions and the Nostradamus attack, in: Advances in Cryptology-EUROCRYPT ’06, 25th Annual Internat. Conf. on the Theory and Appl. of Cryptographic Techniques (S. Vaudenay, ed.), St. Peters- burg, Russia, 2006, Lecture Notes in Comput. Sci., Vol. 4004, Springer-Verlag, Berlin, 2006, pp. 183-200]. We give a formal definition of this property in hash function family settings and work out all the implications and separations be- tween the CTFP preimage resistance and other standard notions of hash function security (preimage resistance, collision resistance, etc.). This paper follows the work of [Rogaway, P.-Shrimpton, T.: Cryptographic hash-function basics: Def- initions, implications, and separations for preimage resistance, second-preimage resistance, and collision resistance, in: Fast Software Encryption, 11th Interna- tional Workshop-FSE ’04 (B. Roy et al., eds.), Delhi, India, 2004, Lecture Notes in Comput. Sci., Vol. 3017, Springer-Verlag, Berlin, 2004, pp. 371-388], where they define seven basic notions of hash function security and examine all the relationships among these notions. We also define a new property for security of hash function families-always CTFP preimage resistance, which guarantees CTFP security for all the hash functions in the family.
Oscillation theorems for second order advanced neutral differential equations
Authors: Džurina Jozef 
Published: April 2013

Abstract
The aim of this paper is to study the oscillation of the second order advanced neutral differential equations . (E)
Obtained results are based on the new comparison theorems that enable us to reduce problem of the oscillation of the second order equation to the the oscillation of the first order equations. Obtained comparison principles essentially simplify the examination of the studied equations.
How to find initial data generating bounded solutions of discrete equations
Authors: Hlavičková Irena 
Published: April 2013

Abstract
This contribution concerns the asymptotic behavior of solutions of a first-order difference equation. We are looking for a solution whose graph stays in a given domain. It is supposed that all the boundary points of this domain are the so called points of strict egress. Under this supposition, it has been already proved that the existence of at least one solution the graph of which stays in the given domain is guaranteed. The main aim of this article is to find the concrete value of the initial condition which generates such a solution. The method we introduce resembles the well-known bisection method for finding roots of equations.
On nonoscillatory solutions tending to zero of third-order nonlinear differential equations
Authors: Mojsej Ivan , Tartal’ová Alena 
Published: April 2013

Abstract
The aim of this paper is to present some results concerning with the asymptotic behavior of solutions of nonlinear differential equations of the third-order with quasiderivatives. In particular, we state the necessary and sufficient conditions ensuring the existence of nonoscillatory solutions tending to zero as t → ∞.
Systems with monotone and slope restricted nonlinearities
Authors: Rǎsvan Vladimir 
Published: April 2013

Abstract
The paper starts from the suggestion of R. E. Kalman that additional information on nonlinearity slope may improve the sufficient conditions for absolute stability. This leads to the so called systems with augmented dynamics. Motivated also by the problem of the PIO II aircraft oscillations-self sustained oscillations induced by the saturation nonlinearities, which are both sector and slope restricted-the paper considers a generalization of the Yakubovich criterion to the case of the systems with critical and unstable linear part. The same generalization concerns a quite well known stability criterion where only slope restrictions are taken into account: the published version is improved by using all advantages of the Liapunov method and of the frequency domain stability inequalities. The results are illustrated by several applications.
The estimation of the dynamics of indirect control switching systems
Authors: Růžičková Miroslava , Kuzmych Olena , Khusainov Denys Ya. 
Published: April 2013

Abstract
The paper deals with the time switching hybrid systems described by nonlinear control equations with nonlinearity of a sector form. The estimation of the solution of the control system at any moment is established through the method of Lyapunov function. Both cases, stable and unstable control systems are considered. The final estimation of the solution of the hybrid system is obtained from the composition of perturbations of the separate control systems using the condition of solution continuity in the points of switching.
Brooks-Jewett-type theorems for the pointwise ideal convergence of measures with values in (l)-groups
Authors: Boccuto Antonio , Papanastassiou Nikolas , Dimitriou Xenofon 
Published: April 2013

ABSTRACT
Some Brooks-Jewett, Vitali-Hahn-Saks and Nikod´ym convergence- -type theorems in the context of (l)-groups with respect to ideal convergence are proved. Moreover, an example is given.
A Comparison of Local Reduction and Sat-Solver Based Algebraic Cryptanalysis of Jh And Keccak
Authors: Adamček Peter , Loderer Marek , Zajac Pavol 
Published: April 2013

ABSTRACT
Local reduction methods can be used to assess the resistance of cryptosystems against algebraic attacks. The assessment is based on the separation of the attack into polynomial-time reduction algorithm, and exponential time guessing and backtracking. This approach is similar to that employed by the DPLL algorithm that is used as a core of various modern SAT-solvers. In the article we show the application of this method to evaluate the strength of (reduced versions of) two chosen SHA-3 candidates: JH, and Keccak, respectively. We compare the complexity estimates with the behavior of the full search algorithm. We also compare the results based on the local reduction with the attack based on the use of SAT-solvers PrecoSAT, and CryptoMiniSAT, respectively.
Improved Zero-Knowledge Identification with Lattices
Authors: Cayrel Pierre-Louis , Lindner Richard , Rückert Markus , Silva Rosemberg 
Published: April 2013

ABSTRACT
Zero-knowledge identification schemes solve the problem of authenticating one party to another via an insecure channel without disclosing any additional information that might be used by an impersonator. In this paper we propose a scheme whose security relies on the existence of a commitment scheme and on the hardness of worst-case lattice problems. We adapt a code- -based identification scheme devised by Cayrel, V´eron and El Yousfi, which constitutes an improvement of Stern’s construction. Our solution sports analogous improvements over the lattice adaption of Stern’s scheme which Kawachi et al. presented at ASIACRYPT ’08. Specifically, due to a smaller cheating probability close to 1/2 and a similar communication cost, any desired level of security will be achieved in fewer rounds. Compared to Lyubashevsky’s scheme presented at ASIACRYPT ’09, our proposal, like Kawachi’s, offers a much milder security assumption: namely, the hardness of SIS for trinary solutions. The same assumption was used for the SWIFFT hash function, which is secure for much smaller parameters than those proposed by Lyubashevsky.
Experiments with the Plaintext Space in Gentry’S Somewhat Homomorphic Scheme
Authors: Mikuš Michal 
Published: April 2013

ABSTRACT
In this paper we propose an improvement of the implementation of the original Gentry-Halevi somewhat homomorphic scheme. We suggest to choose a bigger plaintext space, by changing the underlying ideal from I = (2) to I = (p) for some bigger prime p. Our analysis shows that bigger plaintext space will improve the homomorphic computation of the somewhat homomorphic scheme while it only slightly increases the complexity of the key generation procedure. The encryption and decryption functions have the same complexity. We provide also some experimental computations that support the analysis.
Is everything clear about Tako-Tsubo syndrome?
Authors: Petrov Ivo S. , Tokmakova Mariya P. , Marchov Daniel N. , Kichukov Kostadin N. 
Published: April 2013

Abstract
Introduction: Tako-tsubo syndrome is a novel cardio-vascular disease affecting predominantly postmenopausal women exposed to unexpected strong emotional or physical stress, in the absence of significant coronary heart disease. It is characterized by acute onset of severe chest pain and/or acute left ventricular failure, ECG-changes, typical left ventricular angiographic findings, good prognosis and positive resolution of the morphological and clinical manifestations. First described in 1990 in Japan by Sato, Tako-tsubo cardiomyopathy is characterized by transient contractile abnormalities of the left ventricle, causing typical left ventricular apical ballooning at end-systole with concomitant compensatory basal hyperkinesia. There are also atypical forms, presenting with left ventricular systolic dysfunction which affects the mid-portions of the left ventricle.
The etiology of the disease still remains unclear. Many theories have been put forward about the potential underlying pathophysiological mechanisms that may trigger this syndrome among which are the theory of catecholamine excess, the theory of multivessel coronary vasospasm, the ischemic theory, and the theory of microvascular dysfunction and dynamic left ventricular gradient induced by elevated circulating catecholamine levels.
Adequate management of Tako-tsubo syndrome demands immediate preparation for coronary angiography. Once the diagnosis is made, treatment is primarily symptomatic and includes monitoring for complications. Patients with Tako-tsubo syndrome most frequently develop acute LV failure, pulmonary edema, rhythm and conductive disturbances and apical thrombosis. Treatment is symptomatic and includes administration of diuretics, vasodilators and mechanical support of circulation with intra-aortic balloon counterpulsation.
Breast reduction with the posterosuperior pedicle: a series of 200 consecutive patients
Authors: Shipkov Hristo , Mojallal Ali , Braye Fabienne 
Published: April 2013

ABSTRACT
AIM: To present and evaluate the outcomes of the posterosuperior pedicle breast reduction technique.
PATIENTS AND METHODS: 200 patients were included in the present retrospective study. They were operated on between January 2006 and January 2009. The mean age was 35.9 years (range 22 to 58 years). The average notch-to-nipple distance was 35.8 cm (range, 29 to 42 cm). The mean body mass index was 27 (range, 22 to 35 cm). Results were assessed by means of self-evaluation and by an independent 5-member jury. Fifty two patients (26%) had had bariatric surgery and 48 (24%) had had abdominoplasty. None of the patients had any previous breast surgery. All patients reported dorsal and cervical pain.
RESULTS: The mean follow-up period was 16 months (range, 13 to 23 months). The average weight resected was 981 g (range from 370 g to 1800 g). The average duration of surgery was 2h (range, 1.50 to 2.30 hours) and average length of hospital stay was 2.3 days (range, 2 to 4 days). The duration of the outpatient postoperative care until complete wound healing was 15.2 days (range, 13 to 20 days). There were 4 major complications (2%) (1 bilateral and 3 unilateral infections) treated by drainage and intravenous antibiotics. Twenty-two minor complications were recorded (11%) including one desquamation of the nipple-areola complex without necrosis (0.5%) delayed healing at the junction site of the inverted T incision in 21 cases (10.5%). One hundred and forty eight patients evaluated their results as “very good” (74%), 36 as “good” (18%), and 16 as “acceptable” (8%). There were no results assessed as “poor.” Fifty-eight percent of the patients found that back pain had totally resolved versus 42% who had signifi cant improvement though not complete resolution.
CONCLUSIONS: The postero-superior pedicle for breast reduction is a reproducible and versatile technique. The preservation of the anterior intercostal artery perforators enhances the reliability of the vascular supply to the superior pedicle.
Relative share of asymptomatic forms of hepatitis a in Plovdiv region, Bulgaria
Authors: Vatev Nikolai T. , Stoycheva Mariyana V. , Petrov Andrey I. , Atanasova Maria V. 
Published: April 2013

ABSTRACT
OBJECTIVE: To study the relative share of asymptomatic forms of Hepatitis A in family reservoirs of infection with different hygienic conditions.
MATERIALS AND METHODS: Asymptomatic forms were identifi ed by detecting anti-HAV IgM using ELISA. Two types of households: with poor hygiene and with good hygiene, were studied. The study was designed as case-control. A group of Hepatitis A contact children attending day nurseries and kindergartens was also included in the study.
RESULTS: The relative share of asymptomatic forms of HAV infection in poor hygiene households was 58.62%, while in those with good hygiene it was 41.57%. The comparison using Fisher’s exact test yielded OR = 1.99 and 95% CI (P < 0.05). Asymptomatic forms were found in 7.75% of the investigated contacts among children attending day nurseries and kindergartens.
CONCLUSION: Asymptomatic forms of hepatitis A are very common which makes them epidemiologically quite signifi cant as many of the cases remain unrecognized and later become focal points of new cases of the disease. Poor hygiene conditions are likely to cause more asymptomatic forms. The high relative share of asymptomatic forms found in the households supports the need for immunoprophylaxis of the contacts.