bluuebunny/crossref_metadata_2025_split huggingface dataset:
Operator Valued Measures as Multipliers of L1(I,X) with order Convolution
Authors: Chaurasia P. K. 
Published: June 2015

Abstract
Let I = (0;∞) with the usual topology and product as max multiplication. Then I becomes a locally compact topo- logical semigroup. Let X be a Banach Space. Let L1(I;X) be the Banach space of X-valued measurable functions f such that ,we define

It turns out that ƒ ∗ g ∈ L1(I;X) and L1(I;X) becomes an L1(I)-Banach module. A bounded linear operator T on L1(I;X) is called a multiplier of L1(I;X) if T(f ∗ g) = f ∗ Tg for all f ∈ L1(I) and g ∈ L1(I;X). We characterize the multipliers of L1(I;X) in terms of operator valued measures with point-wise finite variation and give an easy proof of some results of Tewari[12].
On Nonlinear Second Order Volterra-Fredholm Functional Integrodifferential Equation with Nonlocal Condition in Banach Spaces
Authors: Dhakne Machindra B. , Bora Poonam S. 
Published: June 2015

Abstract
Our purpose in this paper is to study the existence of solution of nonlinear second order mixed functional integrodifferential equation with nonlocal condition in Banach space by employing two different techniques namely the Darbo-Sadovskii's fixed point theorem with Hausdorff's measure of noncompactness and the Leray Schauder Alternative.
Frequency and temperature dependent transport properties of NiCuZn ceramic oxide
Authors: Hossen M. Belal , Hossain A.K.M. Akther 
Published: June 2015

Abstract
A polycrystalline sample of ceramic oxide Ni0.27Cu0.10Zn0.63Fe2O4 was prepared by the solid state reaction method. The sintered sample was well polished to remove any oxide layer formed during sintering and the two surfaces of the pellet were coated with a silver paste as a contact material. Among dielectric properties, complex dielectric constant (ε* = εʹ - jεʺ), loss tangent (tanδ) and ac conductivity (σac) in the frequency range of 20 Hz to 2 MHz were analyzed in the temperature range of 303 to 498 K using a Wayne Kerr impedance analyzer (model No. 6500B). The experimental results indicate that ε, εʺ, tanδ and σac decrease with an increase in frequency and increase with increasing temperature. The transition temperature, as obtained from dispersion curve of εʹ, shifts towards higher temperature with an increase in frequency. The variation of dielectric properties with frequency and temperature shows the dispersion behavior which is explained in the light of Maxwell-Wagner type of interfacial polarization in accordance with the Koop’s phenomenological theory. The frequency dependent conductivity results satisfy the Jonscher’s power law, σT(ω) = σ(o)+Aωn, and the results show the occurrence of two types of conduction process at elevated temperature: (i) low frequency conductivity, due to long-range ordering (frequency independent, region I), (ii) mid frequency conductivity at the grain boundaries (region II, dispersion) and (iii) high frequency conductivity at the grain interior due to the short-range hopping mechanism (frequency independent plateau, region III).
Crystal structure of [2,2'-(1,5-diazocane-1,5-diyl)diethanamine-κ4N]- nickel(II) diperchlorate, C10H24Cl2N4NiO8
Authors: Xu Qiang , Li Guo Qiang , Meng Jiang Ping 
Published: June 2015

Abstract C10H24Cl2N4NiO8, orthorhombic, Cmc21 (no. 36), a = 9.657(2) Å, b = 14.916(4) Å, c = 24.599(8) Å, V = 3543.3 Å3, Z = 8, Rgt(F) = 0.0351, wRref(F2) = 0.0899, T = 293 K.
Smoking cessation and gender differences – results from a Swedish sample
Authors: Sohlberg Tove 
Published: June 2015

Aim Previous research has concluded that prevalence of smoking, reasons to quit and strategies to become smoke-free vary markedly by gender. Yet we lack a more comprehensive understanding of the process leading to a quit attempt and a positive long-term outcome, and of the gender-specific mechanisms behind successful cessation. My aim is therefore to investigate reasons of smoking and motives, mechanisms and factors of smoking cessation, with special regard to gender differences. Data/Method Between October 2009 and May 2010, respondents were recruited through the Swedish Monitor project. Each month 1 500 individuals from a representative sample in the Swedish population (n=12 000) were interviewed on the telephone. In a screening process, previous daily smokers who had been smoke-free for at last 12 months were asked to answer a postal survey (n=1 683) concerning their process to a smoke-free life. The analyses consist of both descriptive statistics and factor analyses. Results The results indicate that women's smoking filled an important role in life and that the cessation process was quite complex. Women often met harsh consequences from smoking, quitting for the sake of others. They tended to plan their cessation in advance and made more often use of professional help and nicotine replacement therapy (NRT) than men. Men tended to experience their smoking as quite unproblematic and typically quit for more self-oriented reasons. They seldom planned their cessation in advance, but many made use of snuff or snus, and about half were still using it. More than men, women perceived physical problems in not smoking, but also more social and personal benefits. Conclusions Gender differences were found in reasons to smoke, reasons to quit and strategies to quit smoking. Because the smoking cessation process is gendered, strategies and policy decisions should be gender sensitive, taking into account an array of specific needs.
Determination of the emission rate for the 14 MeV neutron generator with the use of radio-yttrium
Authors: Laszynska Ewa , Jednorog Slawomir , Ziolkowski Adam , Gierlik Michal , Rzadkiewicz Jacek 
Published: June 2015

Abstract
The neutron emission rate is a crucial parameter for most of the radiation sources that emit neutrons. In the case of large fusion devices the determination of this parameter is necessary for a proper assessment of the power release and the prediction for the neutron budget. The 14 MeV neutron generator will be used for calibration of neutron diagnostics at JET and ITER facilities. The stability of the neutron generator working parameters like emission and angular homogeneity affects the accuracy of calibration other neutron diagnostics. The aim of our experiment was to confirm the usefulness of yttrium activation method for monitoring of the neutron generator SODERN Model: GENIE 16. The reaction rate induced by neutrons inside the yttrium sample was indirectly measured by activation of the yttrium sample, and then by means of the γ-spectrometry method. The pre-calibrated HPGe detector was used to determine the yttrium radioactivity. The emissivity of neutron generator calculated on the basis of the measured radioactivity was compared with the value resulting from its electrical settings, and both of these values were found to be consistent. This allowed for a positive verification of the reaction cross section that was used to determine the reaction rate (6.45 × 10−21 reactions per second) and the neutron emission rate (1.04 × 108 n·s−1). Our study confirms usefulness of the yttrium activation method for monitoring of the neutron generator.
Evaluation of passive autocatalytic recombiners operation efficiency by means of the lumped parameter approach*
Authors: Bury Tomasz 
Published: June 2015

Abstract
The problem of hydrogen behavior in containment buildings of nuclear reactors belongs to thermal-hydraulic area. Taking into account the size of systems under consideration and, first of all, safety issues, such type of analyses cannot be done by means of full-scale experiments. Therefore, mathematical modeling and numerical simulations are widely used for these purposes. A lumped parameter approach based code HEPCAL has been elaborated in the Institute of Thermal Technology of the Silesian University of Technology for simulations of pressurized water reactor containment transient response. The VVER-440/213 and European pressurised water reactor (EPR) reactors containments are the subjects of analysis within the framework of this paper. Simulations have been realized for the loss-of-coolant accident scenarios with emergency core cooling system failure. These scenarios include core overheating and hydrogen generation. Passive autocatalytic recombiners installed for removal of hydrogen has been taken into account. The operational efficiency of the hydrogen removal system has been evaluated by comparing with an actual hydrogen concentration and flammability limit. This limit has been determined for the three-component mixture of air, steam and hydrogen. Some problems related to the lumped parameter approach application have been also identified.
Recent measurements of soft X-ray emission from the DPF-1000U facility
Authors: Surała Władysław , Sadowski Marek J. , Paduch Marian , Zielinska Ewa , Tomaszewski Krzysztof 
Published: June 2015

Abstract
Soft X-ray imaging is a very useful diagnostic technique in plasma-focus (PF) experiments. This paper reports results of four experimental sessions which were carried out at the DPF-1000U plasma-focus facility in 2013 and 2014. Over 200 discharges were performed at various experimental conditions. Measurements were taken using two X-ray pinhole cameras with a line of sight perpendicular to the z-axis, at different azimuthal angles (about 20° and 200°), and looking towards the centre of the PF-pinch column. They were equipped with diaphragms 1000 μm or 200–300 μm in diameter and coated with filters of 500 μm Al foil and 10 μm Be foil, respectively. Data on the neutron emission were collected with silver activation counters. For time-resolved measurements the use was made of four PIN diodes equipped with various filters and oriented towards the centre of the PF-column, in the direction perpendicular to the electrode axis. The recorded X-ray images revealed that when the additional gas-puff system is activated during the discharge, the stability of the discharge is improved. The data collected in these experiments confirmed the appearance of a filamentary fine structure in the PF discharges. In the past years the formation of such filaments was observed in many Z-pinch type experiments. Some of the recorded X-ray images have also revealed the appearance of the so-called hot-spots, i.e. small plasma regions of a very intense X-ray emission. Such a phenomenon was observed before in many PF experiments, e.g. in the MAJA-PF device, but it has not been investigated so far in a large facility such as the DPF-1000U. The time-resolved measurements provided the evidence of a time lapse between the X-ray emission from plasma regions located at different distance from the anode surface. The formation of distinct ‘hot-spots’ in different instants of the DPF-1000U discharge was also observed.
Generation of shock waves in dense plasmas by high-intensity laser pulses
Authors: Pasley John , Bush I. A. , Robinson Alexander P. L. , Rajeev P. P. , Mondal S. , Lad A. D. , Ahmed S. , Narayanan V. , Kumar G. Ravindra , Kingham Robert J. 
Published: June 2015

Abstract
When intense short-pulse laser beams (I > 1022 W/m2, τ < 20 ps) interact with high density plasmas, strong shock waves are launched. These shock waves may be generated by a range of processes, and the relative significance of the various mechanisms driving the formation of these shock waves is not well understood. It is challenging to obtain experimental data on shock waves near the focus of such intense laser–plasma interactions. The hydrodynamics of such interactions is, however, of great importance to fast ignition based inertial confinement fusion schemes as it places limits upon the time available for depositing energy in the compressed fuel, and thereby directly affects the laser requirements. In this manuscript we present the results of magnetohydrodynamic simulations showing the formation of shock waves under such conditions, driven by the
j
×
B
force and the thermal pressure gradient (where
j
is the current density and
B
the magnetic field strength). The time it takes for shock waves to form is evaluated over a wide range of material and current densities. It is shown that the formation of intense relativistic electron current driven shock waves and other related hydrodynamic phenomena may be expected over time scales of relevance to intense laser–plasma experiments and the fast ignition approach to inertial confinement fusion. A newly emerging technique for studying such interactions is also discussed. This approach is based upon Doppler spectroscopy and offers promise for investigating early time shock wave hydrodynamics launched by intense laser pulses.
Operation modes of the FALCON ion source as a part of the AMS cluster tool
Authors: Girka Oleksii , Bizyukov Alexander , Bizyukov Ivan , Gutkin Michael , Mishin Sergei 
Published: June 2015

Abstract
The paper investigates the options to increase the production yield of temperature compensated surface acoustic wave (SAW) devices with a defined range of operational frequencies. The paper focuses on the preparation of large wafers with SiO2 and AlN/Si3N4 depositions. Stability of the intermediate SiO2 layer is achieved by combining high power density UV radiation with annealing in high humidity environment. A uniform thickness of the capping AlN layer is achieved by local high-rate etching with a focused ion beam emitted by the FALCON ion source. Operation parameters and limitations of the etching process are discussed.
Change of silica luminescence due to fast hydrogen ion bombardment
Authors: Zhurenko Vitaliy P. , Kalantaryan Oganes V. , Kononenko Sergiy I. 
Published: June 2015

Abstract
This paper deals with the luminescence of silica (KV-type) induced by beam of hydrogen ions with the energy of 210 keV per nucleon. An average implantation dose of up to 3.5 × 1021 cm−3 (5 × 1010 Gy) was accumulated during irradiation over an extended period. The luminescent spectra consisted of the blue band (maximum at 456 nm) and the red band (650 nm) in the visible range. It was shown that increase in the absorption dose had an effect on the silica luminescence. It was found that the most significant changes in the spectrum occurred during the dose accumulation in the region of 550–700 nm. The shape of the spectrum of the luminescent radiation in this wavelength range was affected both by the oxygen deficient centres (blue band) and non-bridging oxygen hole centers (red band). Mathematical processing of the experimental spectra permitted to identify contributions to the luminescent radiation coming from both types of defects.
Temporal distribution of linear densities of the plasma column in a plasma focus discharge
Authors: Cikhardtova Balzhima , Kubeš Pavel , Cikhardt Jakub , Paduch Marian , Zielinska Ewa , Kravárik Josef , Řezáč Karel , Kortanek Jiři , Šíla Ondřej 
Published: June 2015

Abstract
Experiments were carried out on the PF-1000 plasma focus device, with a deuterium filling and with deuterium puffing from a gas-puff nozzle placed on the axis of the anode face. The current was reaching 2 MA. 15 interferometric frames from one shot were recorded with a Nd:YLF laser and a Mach–Zehnder interferometer, with 10–20 ns delay between the frames. As a result, the temporal and spatial distribution of the linear densities and the radial and axial velocities of the moving of plasma in the dense plasma column could be estimated.
Spatial distribution of heavy metals in the topsoil on roundabouts in Zielona Góra, Poland
Authors: Kostecki Jakub , Greinert Andrzej , Wasylewicz Róża , Adam Roksana , Garbera Bartłomiej , Knap Przemysław , Ostapkowicz Maciej , Stanisławiak Bartosz 
Published: June 2015

Abstract
In most cases, traffic pollution deposition is linear with regularities in its distribution in transect routes (canyon-type effect). The aim of this study is to identify different characteristics of heavy metal deposition on large roundabouts, which are open spaces atypical in terms of the characteristics of the air mass flow along road lanes. The study was conducted on four large roundabouts in Zielona Góra. The content of the selected elements in the tested soils was: Cd 0.54–1.22 mg·kg−1 d.m., Cu 3.60–29.3 mg·kg−1 d.m., Cr 2.17–4.63 mg·kg−1 d.m., Zn 26.6–89.9 mg·kg−1 d.m., Pb 10.9–75.4 mg·kg−1 d.m. The geo-accumulation index was also calculated. The threshold values for communication areas were not exceeded, and the content of the elements was generally comparable between the roundabouts. However, we found some differences within particular roundabouts.
Effect of ascorbic acid on morphological and biochemical parameters in tomato seedling exposure to salt stress
Authors: Krupa-Małkiewicz Marcelina , Smolik Beata , Ostojski Dominik , Sędzik Maja , Pelc Justyna 
Published: June 2015

Abstract
The aim of this study is to determine the effect of both NaCl and KCl alone and in comparison to AsA on the morphological and some biochemical parameters of Oxheart and Vilma cultivars of tomato under laboratory and field conditions. A combination of salt applied in the laboratory experiment caused a significant effect on seed germination and root and shoot length and a significant reduction of Chl a, Chl b and Car contents in 14-day-old tomato seedlings. However, seedlings of cultivar Vilma were characterised by higher tolerance to applied salt stress.
NaCl caused a significant decrease in Chl a, Chl b and Car, and an increase in Pro and MDA content in the leaves of Vilma cultivar under field conditions. Besides, tomato plants cv. Vilma treated with NaCl alone or NaCl with ascorbic acid developed longer roots, from 48 to 73%, compared to the control.
Stipa glareosa (Poaceae) in the Republic of Buryatia (Russia)
Authors: Gudkova Polina D. , Nobis Marcin , Ebel Aleksandr L. , Chimitov Daba G. , Verkhozina Alla V. 
Published: June 2015

Abstract Stipa glareosa P. A. Smirn. (sect. Smirnovia Tzvel.) is reported for the first time from the Republic of Buryatia (Russia). Its stations are located at the northern limit of its general distribution range. The taxonomy, distribution and habitat preferences of the species are given, along with its population size at each new locality.
Substring-Searchable Symmetric Encryption
Authors: Chase Melissa , Shen Emily 
Published: June 2015

Abstract
In this paper, we consider a setting where a client wants to outsource storage of a large amount of private data and then perform substring search queries on the data – given a data string s and a search string p, find all occurrences of p as a substring of s. First, we formalize an encryption paradigm that we call queryable encryption, which generalizes searchable symmetric encryption (SSE) and structured encryption. Then, we construct a queryable encryption scheme for substring queries. Our construction uses suffix trees and achieves asymptotic efficiency comparable to that of unencrypted suffix trees. Encryption of a string of length n takes O(λn) time and produces a ciphertext of size O(λn), and querying for a substring of length m that occurs k times takes O(λm+k) time and three rounds of communication. Our security definition guarantees correctness of query results and privacy of data and queries against a malicious adversary. Following the line of work started by Curtmola et al. (ACM CCS 2006), in order to construct more efficient schemes we allow the query protocol to leak some limited information that is captured precisely in the definition. We prove security of our substring-searchable encryption scheme against malicious adversaries, where the query protocol leaks limited information about memory access patterns through the suffix tree of the encrypted string.
Optimal Rate Private Information Retrieval from Homomorphic Encryption
Authors: Kiayias Aggelos , Leonardos Nikos , Lipmaa Helger , Pavlyk Kateryna , Tang Qiang 
Published: June 2015

Abstract
We consider the problem of minimizing the communication in single-database private information retrieval protocols in the case where the length of the data to be transmitted is large. We present first rate-optimal protocols for 1-out-of-n computationallyprivate information retrieval (CPIR), oblivious transfer (OT), and strong conditional oblivious transfer (SCOT). These protocols are based on a new optimalrate leveled homomorphic encryption scheme for large-output polynomial-size branching programs, that might be of independent interest. The analysis of the new scheme is intricate: the optimal rate is achieved if a certain parameter s is set equal to the only positive root of a degree-(m + 1) polynomial, where m is the length of the branching program. We show, by using Galois theory, that even when m = 4, this polynomial cannot be solved in radicals. We employ the Newton-Puiseux algorithm to find a Puiseux series for s, and based on this, propose a Θ (logm)-time algorithm to find an integer approximation to s.
Guard Sets for Onion Routing
Authors: Hayes Jamie , Danezis George 
Published: June 2015

Abstract
“Entry” guards protect the Tor onion routing system from variants of the “predecessor” attack, that would allow an adversary with control of a fraction of routers to eventually de-anonymize some users. Research has however shown the three guard scheme has drawbacks and Dingledine et al. proposed in 2014 for each user to have a single long-term guard. We first show that such a guard selection strategy would be optimal if the Tor network was failure-free and static. However under realistic failure conditions the one guard proposal still suffers from the classic fingerprinting attacks, uniquely identifying users. Furthermore, under dynamic network conditions using single guards offer smaller anonymity sets to users of fresh guards. We propose and analyze an alternative guard selection scheme by way of grouping guards together to form shared guard sets. We compare the security and performance of guard sets with the three guard scheme and the one guard proposal. We show guard sets do provide increased resistance to a number of attacks, while foreseeing no significant degradation in performance or bandwidth utilization.
De-anonymizing Genomic Databases Using Phenotypic Traits
Authors: Humbert Mathias , Huguenin Kévin , Hugonot Joachim , Ayday Erman , Hubaux Jean-Pierre 
Published: June 2015

Abstract
People increasingly have their genomes sequenced and some of them share their genomic data online. They do so for various purposes, including to find relatives and to help advance genomic research. An individual’s genome carries very sensitive, private information such as its owner’s susceptibility to diseases, which could be used for discrimination. Therefore, genomic databases are often anonymized. However, an individual’s genotype is also linked to visible phenotypic traits, such as eye or hair color, which can be used to re-identify users in anonymized public genomic databases, thus raising severe privacy issues. For instance, an adversary can identify a target’s genome using known her phenotypic traits and subsequently infer her susceptibility to Alzheimer’s disease. In this paper, we quantify, based on various phenotypic traits, the extent of this threat in several scenarios by implementing de-anonymization attacks on a genomic database of OpenSNP users sequenced by 23andMe. Our experimental results show that the proportion of correct matches reaches 23% with a supervised approach in a database of 50 participants. Our approach outperforms the baseline by a factor of four, in terms of the proportion of correct matches, in most scenarios. We also evaluate the adversary’s ability to predict individuals’ predisposition to Alzheimer’s disease, and we observe that the inference error can be halved compared to the baseline. We also analyze the effect of the number of known phenotypic traits on the success rate of the attack. As progress is made in genomic research, especially for genotype-phenotype associations, the threat presented in this paper will become more serious.