bluuebunny/crossref_metadata_2025_split huggingface dataset:
Definition of a Data Model to support Risk Analysis in the frame of Critical Infrastructures protection
Authors: Tirone Lucio , Tassini Claudio Calisti 
Published: August 2015

AbstractOn December 2008, the European Union adopted the Council Directive 2008/114/EC on the identification and designation of European critical infrastructures (CIs) and the assessment of the need to improve their protection. In support to European CI operators, on 2011 the Italian Association of Critical Infrastructures Experts (AIIC) started a Working Group (WG) with the goal to define guidelines for the drafting of Operator Security Plan (OSP). On 2012, the WG activities had been extended to define a Data Model for the construction of a knowledge base to support a risk analysis based on the protection of Critical Infrastructures. One of the key elements of the WG was the adoption of the principles of Systems Engineering, at both methodological and application level. This paper demonstrates how this preparatory activities has been effectively conducted, providing a deep insight in the definition of the “Systems” and “Components” involved in the protection of Critical Infrastructures.
Addressing potential role of magnesium dyshomeostasis to improve treatment efficacy for epilepsy: A reexamination of the literature
Authors: Osborn Katie E. , Shytle R. Douglas , Frontera Alfred T. , Soble Jason R. , Schoenberg Mike R. 
Published: August 2015

AbstractMagnesium (Mg2+) is an abundant mineral in the body serving many biochemical functions. Magnesium supplementation has been shown to raise seizure threshold in animal and human studies, but the etiological contribution of magnesium deficiency to the onset and maintenance of epilepsy, as well as the degree to which it impacts antiepileptic drug efficacy, remains poorly understood. This may be due, at least in part, to the inherent limitations of commonly used serum levels as a measure of functional magnesium status, as well as insufficient data regarding relative bioavailabilities of various magnesium salts and chelates for use with humans. To date, 1 randomized clinical trial has been conducted assessing Mg2+ supplementation in epilepsy, and findings yielded promising results. Yet a notable dearth in the literature remains, and more studies are needed. To better understand the potential role of magnesium deficiency as a causal factor in epilepsy, more convenient and accurate measurement methods should to be developed and employed in randomized, controlled trials of oral magnesium supplementation in epilepsy. Findings from such studies have the potential to facilitate far‐reaching clinical and economic improvements in epilepsy treatment standards.
Effectiveness of Granular Polyacrylamide to Reduce Soil Erosion During Consecutive Rainstorms in a Calcic Regosol Exposed to Different Fire Conditions
Authors: Lado Marcos , Inbar Assaf , Sternberg Marcelo , Ben‐Hur Meni 
Published: August 2015

AbstractFire severity varies widely among and within wildfires. The objective of this work was to test the effectiveness of granular polyacrylamide (PAM) to reduce erosion in a Calcic Regosol exposed to different fire conditions. Three treatments were selected representing disturbances that coexist after a wildfire: unburned, low‐moderate severity direct fire, and prolonged heating under moderate temperature [heated (HT)]. Granular PAM was spread on the surface of disturbed samples at two rates: (i) 0 (control) and (ii) 50 kg ha−1. Additional application rates of 25 and 100 kg ha−1 were tested in HT. Three 80‐mm rainstorms were applied with an intensity of 47 mm h−1, separated by drying periods. PAM reduced soil loss in all storms in unburned and direct fire, although runoff increased during the first storm due to increased runoff viscosity. In the highly stable HT, soil loss was reduced only with an application rate of 100 kg ha−1 and after a drying period. In many cases, granular PAM could be effective to reduce post‐fire erosion. In soils with high structural stability, a PAM dose should be selected to find a right balance between its stabilising effect on soil structure and its effect increasing runoff during the first storm. Copyright © 2015 John Wiley & Sons, Ltd.
CMOS low noise amplifier designs for 5.8 GHz dedicated short‐range communications applications
Authors: Huang Chien‐Chang , Guu George Changlin 
Published: August 2015

ABSTRACTThis article presents two low noise amplifier (LNA) designs in 5.8 GHz using 0.18 μm CMOS technology, for dedicated short‐range communications (DSRC) applications. The source degenerate inductor is utilized for the cascode configuration with and without the mutual coupling from the gate inductor, to show the compromise between chip size and noise figure, where the mutual inductor reduces the chip area with a little increase of noise figure. To improve the receiver dynamic ranges of the two designed LNAs, the gain‐control function is added by the bias current bleeding at the common‐gate stage of the cascode configuration. The measured results accomplish 10.9 dB in gain and 3.6 dB in noise figure with −5 dBm of input 1 dB gain compression point (P1dB) for the design without mutual inductor, and 11.2 dB in gain and 4.4 dB in noise figure with −5 dBm input P1dB for the design with mutual inductor, while the chips occupy 0.42 mm2 and 0.36 mm2, respectively. These LNA designs can fulfill the requirements of DSRC applications. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2524–2529, 2015
Design of planar band‐notched monopole antenna for 2.4 GHz WLAN and UWB applications
Authors: Satyanarayana Boya , Mulgi Shivasharanappa 
Published: August 2015

ABSTRACTIn this article, a novel design of band‐notched monopole antenna with U‐shaped slot capable to work for both WLAN (2.4 – 2.5 GHz) and UWB (3.1‐10.6 GHz) applications is proposed. This antenna comprises the multilateral structure of the circular radiating patch with U‐shaped slot fed by a 50Ω microstripline feed and on bottom of the antenna a partial ground plane is used. A U‐shaped slot is etched on the circular radiating patch. With this design the antenna gives the WiMAX (3.2‐4.2 GHz) band‐notched characteristics. The parametric study of the proposed antenna is investigated using the Ansoft HFSS software and the results are compared with experimental results and they are good in agreement with each other. The antenna can operate in the range of 2.36 to more than 12 GHz with notched band of 3.3‐4.20 GHz for 3.5 GHz WiMAX. Also, this antenna exhibits a good omni‐directional radiation patterns and stable peak gain over the desired frequency bands which will satisfy the UWB communication system. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2496–2501, 2015
RCS of large calibration objects with different surface characteristics in 0.31 THz
Authors: Liu Chi , Wang Xuetian , Kou Yuxin 
Published: August 2015

ABSTRACTNowadays, the space target characteristics of terahertz steps into a crucial stage, and the research in radar cross‐section (RCS) of large calibration objects is the foundation of it. This article gives the simulation and the tests of six conducting spheres of different surface characteristics. And the testing results show the variation of RCS calibrator. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2479–2482, 2015
A DVC switchable antenna technique for the hand effect in mobile terminals
Authors: Lee Won‐Woo , Jang Beakcheol 
Published: August 2015

ABSTRACTA human hand holding mobile terminals causes the impedance mismatch and the signal absorption in the human body and, in result, deteriorates the performance of the mobile terminals. In this letter, we show the hand effect on mobile terminals via appropriate experiments and propose a simple but novel antenna solution that compensates for the mismatch. Our proposed solution exploits the digital variable capacity (DVC), which makes the antenna adapt to the hand effect on mobile terminals. To validate our design, we implement the proposed antenna in band5. Experimental results show that a human hand holding mobile terminals causes losses by 5.39–6.02dB. They also show that the proposed DVC adaptive antenna technique improves the antenna performance as much as 0.47–1.78dB. This study presents new understanding on the effect of DVC that compensates mismatch losses. We believe that antenna designers can exploit this research when optimizing antenna performance. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2614–2617, 2015
Compact, high isolation, and dual‐polarized differential dual‐notched UWB‐MIMO slot antenna
Authors: Li Wen‐Ao , Tu Zhi‐Hong , Chu Qing‐Xin 
Published: August 2015

ABSTRACTA compact differentially fed ultrawideband‐multiple‐input multiple‐output (UWB‐MIMO) antenna with very high isolation, dual‐polarization, and dual‐notched bands is proposed in this letter. The proposed MIMO antenna consists of two pairs of differential ports which share a common circular radiation slot, making the proposed UWB‐MIMO antenna as compact as one antenna element with the size of 30 × 30 mm2. By arranging two pairs of differential ports orthogonally in the virtual ac ground of each other, the differential isolation can be infinite theoretically and dual‐polarization are obtained. To achieve dual notch‐band, half‐wavelength stubs and slits are introduced. Besides, the radiation characteristic and diversity performance are discussed. Good agreement is achieved between the measured results and simulated results. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2609–2614, 2015
X‐band printed fresnel zone plate antenna: Design, simulation, and field measurements
Authors: Perotoni Marcelo B. , Junqueira Cynthia 
Published: August 2015

ABSTRACTDesign, simulation, and measurements of a horn‐fed X‐Band Fresnel Lens antenna is presented. The influence of the number of rings, substrate of choice and the respective near and far‐field measurements are shown. The antenna is designed to be used in a free‐space materials measurement setup, as a low cost and rugged alternative to dielectric horn antennas, therefore its focal area is defined and characterized. Measurements confirmed the simulation evaluations. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2604–2609, 2015
Size improvement of rectangular microstrip patch antenna at MM‐wave and terahertz frequencies
Authors: Rabbani M. S. , Ghafouri‐Shiraz H. 
Published: August 2015

ABSRACTA method has been proposed to increase the size of rectangular microstrip patch antenna (RMPA) for mm‐wave and terahertz frequencies to increase the fabrication tolerance. The method is experimentally tested on a RMPA designed at 56 GHz frequency where both the simulation and measured results are in good agreement. Moreover, the antenna's overall performance is also improved. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2585–2589, 2015
Compact UWB monopole antenna with 3.5/5.5 GHz enhanced dual band rejection characteristics
Authors: Sanyal Rajarshi , Patra Abhirup , Sarkar Partha Pratim , Chowdhury Santosh Kumar 
Published: August 2015

ABSTRACTThis article presents a compact ultrawideband (UWB) monopole microstrip antenna with enhanced band rejection at 3.5 and 5.5 GHz. The antenna consist an arrow shaped radiating patch with sequential steps at the lower edges and U shaped truncated ground plane to obtain UWB response. Enhanced band rejection at 3.5 GHz can be achieved by inserting a pair of identical quarter wave open ended complimentary split ‘O’ shaped resonator, connected to the stepped periphery of the patch surface, and conversely, deep band rejection at 5.5 GHz can be realized by embedding another pair of identical quarter wave open ended complimentary split ‘P’ shaped resonator symmetrically connected to the truncated edge of the ground plane. The proposed antenna exhibits quasiomnidirectional radiation pattern with stable gain performance. Moreover, group delay and transmission characteristic show excellent transient response. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2693–2699, 2015
Dual band printed quasi‐yagi antenna for RFID and WLAN applications
Authors: Ullah Mohammad Habib , Mahadi Wan Nor Liza , Latef Tarik Abdul , Islam Mohammad Tariqul , Uddin Md Jasim , Ahsan Md Rezwanul 
Published: August 2015

ABSTRACTIn this letter, a new dual band quasi‐Yagi antenna is presented for Radio Frequency Identification (RFID) reader and Wireless Local Area Network (WLAN). The proposed antenna is comprised of 0.17λ × 0.13λ radiating patch and reduced ground plane. The proposed antenna is fabricated on a custom made copper laminated 1.25‐mm thick dielectric substrate (εr = 4.5). Measurement results show that 27.78% and 23.4% bandwidths with maximum gains of 4.95 dBi and 7.26 dBi in lower and upper band, respectively. Configuration of driving elements, director, and the pairs of folded arm between excitation point and the driven element was optimized that reduces the length of driving poles significantly. Nearly, stable radiation characteristics with proper impedance matching make the proposed antenna appropriate for universal portable RFID reader with WLAN functionality. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2655–2659, 2015
Wideband bandpass filters using corrugated substrate integrated waveguide and periodic structures
Authors: Liang Fu‐tao , An Xiang 
Published: August 2015

ABSTRACTTwo wideband bandpass filters are designed and implemented by combining corrugated substrate integrated waveguides (CSIWs) and periodic structures, moreover, the novel CSIW is for the first time used for creating filtering devices. The CSIW performs similar to the traditional substrate integrated waveguide (SIW); however, it provides a completely floating conductor. As a result, active devices can easily be connected to the edge of the CSIW without using extra biasing chokes. With the help of the bandstop characteristics of periodic structures, such as defected ground structures (DGSs) and electromagnetic band gaps (EBGs), the proposed filters show wide passband, high frequency‐selectivity, and low insertion loss. The filters are fabricated and investigated, and the simulation results and experiment results are in good agreements. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2665–2668, 2015
Analysis and design of miniaturized multisection crossover with open stubs
Authors: Kim Taewon , Lee Juneseok , Choi Jaehoon 
Published: August 2015

ABSTRACTA compact branch‐line crossover using open stubs structure is proposed. Even and odd mode analysis is adopted to derive the analytical formulas for a crossover with wide bandwidth and a compact size. The proposed crossover operating at 2.5 GHz has a fractional bandwidth of 23% (from 2.2 to 2.78 GHz) with high isolation, a high return loss, and low insertion loss. It also has a low group delay deviation of about 0.38 ns. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2673–2677, 2015
A simulation method for high‐cycle fatigue‐driven delamination using a cohesive zone model
Authors: Bak Brian L. V. , Turon Albert , Lindgaard Esben , Lund Erik 
Published: August 2015

SummaryA novel computational method for simulating fatigue‐driven mixed‐mode delamination cracks in laminated structures under cyclic loading is presented. The proposed fatigue method is based on linking a cohesive zone model for quasi‐static crack growth and a Paris' law‐like model described as a function of the energy release rate for the crack growth rate during cyclic loading. The J‐integral has been applied to determine the energy release rate. Unlike other cohesive fatigue methods, the proposed method depends only on quasi‐static properties and Paris' law parameters without relying on parameter fitting of any kind. The method has been implemented as a zero‐thickness eight‐node interface element for Abaqus and as a spring element for a simple finite element model in MATLAB. The method has been validated in simulations of mode I, mode II, and mixed‐mode crack loading for both self‐similar and non‐self‐similar crack propagation. The method produces highly accurate results compared with currently available methods and is capable of simulating general mixed‐mode non‐self‐similar crack growth problems. Copyright © 2016 John Wiley & Sons, Ltd.
Population shuffling between ground and high energy excited states
Authors: Sabo T. Michael , Trent John O. , Lee Donghan 
Published: August 2015

AbstractStochastic processes powered by thermal energy lead to protein motions traversing time‐scales from picoseconds to seconds. Fundamental to protein functionality is the utilization of these dynamics for tasks such as catalysis, folding, and allostery. A hierarchy of motion is hypothesized to connect and synergize fast and slow dynamics toward performing these essential activities. Population shuffling predicts a “top‐down” temporal hierarchy, where slow time‐scale conformational interconversion leads to a shuffling of the free energy landscape for fast time‐scale events. Until now, population shuffling was only applied to interconverting ground states. Here, we extend the framework of population shuffling to be applicable for a system interconverting between low energy ground and high energy excited states, such as the SH3 domain mutants G48M and A39V/N53P/V55L from the Fyn tyrosine kinase, providing another tool for accessing the structural dynamics of high energy excited states. Our results indicate that the higher energy gauche− rotameric state for the leucine χ2 dihedral angle contributes significantly to the distribution of rotameric states in both the major and minor forms of the SH3 domain. These findings are corroborated with unrestrained molecular dynamics (MD) simulations on both the major and minor states of the SH3 domain demonstrating high correlations between experimental and back‐calculated leucine χ2 rotameric populations. Taken together, we demonstrate how fast time‐scale rotameric side‐chain population distributions can be extracted from slow time‐scale conformational exchange data further extending the scope and the applicability of the population shuffling model.
Theoretical calculations on the structural, electronic, and optical properties of bulk silver nitrides
Authors: Suleiman Mohammed S. H. , Joubert Daniel P. 
Published: August 2015

AbstractThe extreme endothermic nature of silver nitride has been hampering its experimental characterization and there is incomplete detailed knowledge of the structural and physical properties of this material. Stimulated by this lack, we present a first‐principles DFT and GW investigation of structural, electronic, and optical properties of bulk crystalline silver nitrides. In this study, 20 structures for AgN, AgN, and AgN were investigated. The equilibrium cohesive and formation energies revealed that the series contains the most energetically stable phases. However, all the formation energies confirmed that silver nitrides are thermodynamically unstable. New possible structural phase transitions were discovered from the enthalpy–pressure equation of states diagrams. We predict that the most stable phases of AgN and AgN are metallic, while those of AgN are semiconductors. In agreement with a previous study, it is found that as the nitrogen to silver ratio decreases, the total DOS at Fermi energy decreases until a gap opens. The calculated lattice parameter of AgN(D09)—the most stable modification in the considered AgN phases—is close to the experimentally reported one, yet the calculated absorption spectrum does not explain the observed black color of the synthesized AgN.
Prenatal diagnosis of cobblestone lissencephaly associated with Walker–Warburg syndrome based on a specific sonographic pattern
Authors: Lacalm A. , Nadaud B. , Massoud M. , Putoux A. , Gaucherand P. , Guibaud L. 
Published: August 2015

ABSTRACTWe report a specific sonographic cerebral pattern of cobblestone lissencephaly (CL) that has not been described previously. This pattern was encountered in four index cases and allowed prenatal diagnosis of CL associated with Walker–Warburg syndrome. The pattern included both an outer echogenic band with reduced pericerebral space, corresponding to an infra‐ and supratentorial extracortical layer of neuroglial overmigration on pathological examination, and a ‘Z’‐shaped appearance of the brainstem. This pattern was found as early as 14 weeks' gestation in one of our cases. Copyright © 2015 ISUOG. Published by John Wiley & Sons Ltd.
Communications on quantum similarity (4): collective distances computed by means of similarity matrices, as generators of intrinsic ordering among quantum multimolecular polyhedra
Authors: Carbó‐Dorca Ramon , Barragán Diego 
Published: August 2015

This study generalizes the notion of distance via defining an axiomatic collective distance, between arbitrary vector sets. A first part discusses conceptual tools, which can be later useful for general mathematical practice or as computational quantum similarity indices. After preliminary definitions, two elements, which can be associated with arbitrary sets of a vector space, are described: the centroid and the variance vectors. The Minkowski norm of the variance vector is shown to comply with the axioms of a collective distance. The role of the Gram matrix, associated with a vector set, is linked to the definition of numerical variance. Several simple application examples involving linear algebra and N‐dimensional geometry are given. In a second part, all previous definitions are applied to quantum multimolecular polyhedra (QMP), where a set of molecular quantum mechanical density functions act as vertices. The numerical Minkowski norm of the variance vector in any QMP could be considered as a superposition of molecular contributions, corresponding to a new set of quantum similarity indices, which can generate intrinsic ordering among QMP vertices. In this way, the role of quantum similarity matrix elements is evidenced. Application to collections of molecular structures is analyzed as an illustrative practical exercise. The connection of the QMP framework with classical and quantum quantitative structure–properties relation (QSPR) becomes evident with the aid of numerical examples computed over several molecular sets acting as QMP. WIREs Comput Mol Sci 2015, 5:380–404. doi: 10.1002/wcms.1223This article is categorized under:

Structure and Mechanism > Molecular Structures
Computer and Information Science > Chemoinformatics
Computer and Information Science > Computer Algorithms and Programming
New Ternary Hafniumhalides: Cs[Hf2Br9] and Rb[Hf2Br9]
Authors: Jablonski Jonas , Köckerling Martin 
Published: August 2015

Abstract The syntheses and crystal structures of two new ternary hafnium compounds, Cs[Hf2Br9] (1) and Rb[Hf2Br9] (2), are described. Both compounds are obtained in high yield from the chemical reaction of HfBr4 and CsBr or RbBr, respectively, in the presence of a small amount of elemental Al at 450 °C in sealed silica tubes. They crystallize isostructurally in the monoclinic space group P2/n. The lattice parameters are a = 9.946(1) (1) and 9.9388(4) Å (2), b = 6.6580(9) (1) and 6.6695(3) Å (2), c = 12.930(2) (1) and 12.8435(6) Å (2), and β = 112.479(6)° (1) and 112.726(2)° (2). The crystals of the two compounds contain dinuclear tri‐μ‐bromido‐hexabromido‐dihafnate(–) complex anions, [Hf2Br9]–, besides the alkali metal cations. The complex anions can be described as face‐sharing bioctahedral units.
Fusion of Information from 3D Printing and Surgical Robot: An Innovative Minimally Technique Illustrated by the Resection of a Large Celiac Trunk Aneurysm
Authors: Salloum Chady , Lim Chetana , Fuentes Liliana , Osseis Michael , Luciani Alain , Azoulay Daniel 
Published: August 2015

AbstractThe rapid advancement in technological innovations, such as 3D printing and robotic surgery, is a progression that few could imagine just a few years ago. The combination of these technologies namely 3D printing of patient‐specific anatomy and robotic surgery is reported here to plan and perform the resection of a large aneurysm of the celiac trunk.