bluuebunny/crossref_metadata_2025_split huggingface dataset:
1.2 V Sinh‐Domain allpass filter
Authors: Psychalinos C. , Roumelioti K. , Khanday F. A. , Shah N. A. 
Published: May 2013

AbstractA first‐order Sinh‐Domain allpass filter topology is introduced in this paper. It is constructed from a class‐AB current mirror and appropriately configured non‐linear transconductor cells. Due to the inherent class‐AB nature of Sinh‐Domain filters, the proposed topology offers the capability for handling currents at levels greater than that of the dc bias current level. Also, it offers the well‐known features of companding filters such as electronic adjustment of its frequency characteristics and the capability for operation in a low‐voltage environment. In addition, a four‐phase sinusoidal oscillator design example has been provided. The behaviour of the proposed topology has been evaluated and compared with other already known configurations, where the most important performance factors have been considered. Copyright © 2013 John Wiley & Sons, Ltd.
Development of polyamide‐imide/silica nanocomposite enameled wire
Authors: Kikuchi Hideyuki , Hanawa Hidehito , Honda Yuki 
Published: May 2013

AbstractNanocomposite materials based on polyamide‐imide have not been able to prevent nano‐particles from aggregating, and therefore the development of this material has been extremely diﬃcult. However, we prevented aggregation of nano‐particles by developing the low‐hygroscopicity solvent and the copolyamide‐imide, and commercialized a new partial discharge‐resistant enameled wire with nanocomposite polyamide‐imide insulating material in 2010. The lifetime of the newly developed partial discharge‐resistant nanocomposite polyamide‐imide enameled wire is 1000 or more times that of ordinary organic‐enameled wire. The lifetime of the new wire is also excellent in a high‐temperature atmosphere. © 2013 Wiley Periodicals, Inc. Electron Comm Jpn, 96(6): 41–48, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.11456
Current distribution characteristics of CFRP panels
Authors: Yamamoto Kazuo 
Published: May 2013

AbstractCFRP (Carbon Fiber Reinforced Plastic) is widely used in the structures of aircraft, automobiles, wind turbines, and rockets because of its qualities of high mechanical strength, low weight, fatigue resistance, and dimensional stability. However, these structures are often at risk of being struck by lightning. When lightning strikes such structures and lightning current ﬂows through the CFRP, it may be structurally damaged because of the impact of the lightning strike or by ignition between layers. If there are electronic systems near the CFRP, they may break down or malfunction because of the resulting electromagnetic disturbance. In fact, the generation mechanisms of these breakdowns and malfunctions depend on the current distribution in the CFRP. Hence, it is critical to clarify the current distribution in various kinds of CFRPs. In this study, two kinds of CFRP panels, one composed of quasi‐isotropic lamination layers and the other composed of 0°/90° lamination layers of unidirectional CFRP prepregs, are used to investigate the dependence of the current distribution on the nature of the lamination layers. The current distribution measurements and simulations for CFRP panels are compared with those for a same‐sized aluminum plate. The knowledge of these current distribution characteristics would be very useful for designing the CFRP structures of aircraft, automobiles, wing turbines, rockets, etc. in the future. © 2013 Wiley Periodicals, Inc. Electron Comm Jpn, 96(6): 32–40, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.11457
Physical unclonable function with multiplexing units and its evaluation
Authors: Yoshikawa Masaya , Asai Toshiya , Shiozaki Mitsuru , Fujino Takeshi 
Published: May 2013

AbstractRecently, semiconductor counterfeiting has become an increasingly serious problem. Therefore, techniques to prevent counterfeiting by using random characteristic patterns that are diﬃcult to control artiﬁcially have attracted attention. The physical unclonable function (PUF) is one of these techniques. It is a method of deriving ID information peculiar to a device by detecting random physical features that cannot be controlled during the device's manufacture. Because information such as the ID information is diﬃcult to replicate, PUF is used as a technique to prevent counterfeiting. Several studies have been reported on PUF. The arbiter PUF, which utilizes the diﬀerence in signal propagation delay between selectors, is a typical method of composing PUF using delay characteristics. This paper proposes a new PUF which is based on the arbiter PUF. The proposed PUF introduces new multiplexing selector units. It attempts to generate an eﬀective response using the orders of three signal arrivals. Experiments using FPGAs verify the validity of the proposed PUF. Although Uniqueness is degraded, Correctness, Steadiness, Randomness, and Resistance to machine learning attacks are improved in comparison with the conventional approach. © 2013 Wiley Periodicals, Inc. Electron Comm Jpn, 96(6): 22–31, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.11458
Development of 3D image measurement system and stereo‐matching method, and its archaeological measurement
Authors: Kochi Nobuo , Ito Tadayuki , Kitamura Kazuo , Kaneko Shun'ichi 
Published: May 2013

AbstractThree‐dimensional measurement and modeling systems with digital cameras on PCs are now making progress and increasingly felt to be desirable in terrestrial (close‐range) photogrammetry for such sectors as cultural heritage preservation, architecture, civil engineering, manufacturing, measurement, etc. Therefore, we have developed a system to improve the accuracy of stereo‐matching, which is the very core of 3D measurement. As a stereo‐matching method, in order to minimize mismatch and to be robust in geometric distortions, occlusion, as well as brightness change, we invented the Coarse‐to‐Fine Strategy Method by integrating OCM (orientation code matching) with LSM (least squares matching). This system could attain an accuracy of 0.26 mm in experiments on a mannequin. In real‐world experiments on archaeological ruins in Greece and Turkey, the accuracy was within 1 cm, compared with their blueprint plan. Formerly, workers required at least 1.5 months for this kind of survey operation with existing methods, but now only 3 or 4 days is needed. This conﬁrmed the practicality and eﬃciency of the new method. Herein we demonstrate our new system of 3D measurement and stereo‐matching and present some concrete examples of its practical application. © 2013 Wiley Periodicals, Inc. Electron Comm Jpn, 96(6): 9–21, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.11459
Robust design of vibration suppression control system for crane using sway angle observer considering friction disturbance
Authors: Sano Hiroki , Sato Kentaro , Ohishi Kiyoshi , Miyazaki Toshimasa 
Published: May 2013

AbstractIt is desirable for a container crane to operate smoothly and quickly. For this purpose, the control system of a container crane should be capable of antisway control for suppressing vibrations. A vision sensor system is often used to detect the sway angle. However, since a control system with a vision sensor has a delay time when determining the angle, it sometimes leads to deterioration of control performance owing to the delay time. In order to overcome this problem, this paper proposes a new antisway crane control system based on a dual‐state observer with sensor‐delay correction. However, because of nonlinear friction in the crane, the estimation accuracy achieved by using the observer is poor. To overcome this problem, this paper proposes a disturbance observer considering friction disturbance. The control performance and eﬀectiveness of the proposed robust control system based on the estimated information are shown to be satisfactory by experimental results. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 184(3): 36–46, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22412
Influencing the Stability of Diaminomethane‐Containing Azacrown Ether Ligands in the Presence of Transition‐Metal Ions
Authors: Gee William J. , Batten Stuart R. 
Published: May 2013

AbstractThe evaluation of a new azacrown ether ligand bis{[3‐(pyridin‐4‐yl)‐1H‐pyrazol‐1‐yl]methyl}diaza‐18‐crown‐6 (b3pd), which contains pendant p‐pyridylpyrazole arms connected by diaminomethane linkers, identified a tendency to undergo retro‐Mannich fragmentation in the presence of transition‐metal ions. However, treatment of b3pd with potassium perchlorate or potassium iodide prior to complexation with transition‐metal ions imparted a resistance to fragmentation, such that crystallisation of coordination polymers from concentrated solutions after several weeks was possible. Four solid‐state structures containing Kb3pd were isolated: a perchlorate salt (1), a divalent manganese 1D coordination polymer [Mn(Kb3pd)(DMF)4]·2ClO4·I3 (2, DMF = N,N‐dimethylformamide), a cuprous 2D coordination network [Cu2(Kb3pd)2(I3)(I)3]·3H2O (3) and a cuprous 1D coordination polymer [Cu(Kb3pd)(I)2] (4). Additionally, the retro‐Mannich process was investigated by in situ FTIR spectroscopy, mass spectrometry, crystallography and by the isolation of a cobalt complex ligated by a partially fragmented ligand, mono{[3‐(pyridin‐4‐yl)‐1H‐pyrazol‐1‐yl]methyl}diaza‐18‐crown‐6 (m3pd). The composition of the cobalt complex was found to be [CoCl3(Hm3pd)]·H2O (5).
Synthesis and Structure of KPbBP2O8 – A Congruent Melting Borophosphate with Nonlinear Optical Properties
Authors: Li Hongyi , Zhao Yi , Pan Shilie , Wu Hongping , Yu Hongwei , Zhang Fangfang , Yang Zhihua , Poeppelmeier Kenneth R. 
Published: May 2013

AbstractFor the first time, single crystals of KPbBP2O8 with sizes up to 18 × 13 × 6 mm have been grown from a stoichiometric mixture of its components by the top seed growth method. The crystal structure was determined from single‐crystal X‐ray data: tetragonal, space group I$\bar {4}$2d, a = 7.1464(7) Å, c = 13.8917(16) Å, Z = 4. It exhibits an isolated [BP2O8]3– unit that is built from nearly ideal tetrahedral BO4 and PO4 groups, which are connected to each other alternatively by corner‐sharing O atoms to make a 12‐membered ring. Transmission spectroscopy illustrates that the UV cutoff edge is at approximately 235 nm. Furthermore, IR spectroscopy, thermal analysis, and second‐harmonic generation (SHG) measurements were also performed on the reported material.
An Electropolymerisable Pyridine‐Functionalised Gold Bis(dithiolene) Complex
Authors: Oliveira Sandrina , Afonso Mónica L. , Dias Sandra I. G. , Santos Isabel C. , Henriques Rui T. , Rabaça Sandra , Almeida Manuel 
Published: May 2013

AbstractA new pyridine‐substituted dithiolene complex, PPh4[Au(4‐pdddt)2] (3), was prepared and characterised. Cyclic voltammetry shows three redox processes corresponding to the interconversion between dianionic, monoanionic, neutral and cationic states, as often presented by this type of bis(dithiolene) complexes. However, the last oxidation process in this compound leads to a polymerised species obtained as an electrodeposited film. By potentiostatic electrodeposition, thin films of either the neutral gold complex, [Au(4‐pdddt)2] (4), or the polymerised cationic species can be obtained. Both films absorb strongly in the NIR region and have properties consistent with the incorporation of the intact metal bis(dithiolene) complex. A mechanism for polymerisation through formation of S–S interligand bonds is proposed.
Lewis Bases Trigger Intramolecular CH–Bond Activation: (tBu3SiO)2W=NtBu [rlhar2] (tBu3SiO)(κO,κC‐tBu2SiOCMe2CH2)HW=NtBu
Authors: Marshak Michael P. , Rosenfeld Devon C. , Morris Wesley D. , Wolczanski Peter T. , Lobkovsky Emil B. , Cundari Thomas R. 
Published: May 2013

AbstractThe symmetry‐forbidden cyclometalation of (silox)2W=NtBu (1, silox = OSitBu3) to (silox)(tBuN)W(H)(κO,κC‐OSitBu2CMe2CH2) (2) was investigated by kinetics [ΔH‡ = 19.2(9) kcal/mol; ΔS‡ = –23(3) eu; ΔG‡(25 °C) = 26.1(10) kcal/mol], isotopic labeling {[D54]1 → [D54]2; kH/kD = 2.7(4)}, and equilibrium studies [ΔH° = –6.7(3) kcal/mol; ΔS° = –12.1(8) eu; ΔG°(25 °C) = –3.1(4) kcal/mol]. The crystal structure of 2 reveals a pseudo‐square‐pyramidal structure that can be viewed as a distorted tetrahedron with the W–H and W–C bonds occupying one site. The addition of H2 (or D2) to 1 proceeds similarly to afford (silox)2(tBuN=)WH2 (3), and the addition of H2 to 2 also affords 3, but labeling experiments show that it proceeds via 1. Phosphane bases with cone angles < 160° trigger the cyclometalation of 1 to 2 in < 5 min, and PMe3 catalyzed the dihydrogen addition to 1. Quantum mechanics/molecular mechanics (QM/MM) calculations support the experimental findings and show that Lewis bases promote σ/π mixing. The experimentally observed intermediate (silox)2(tBuN=)WPMe3 (1‐PMe3) has a (dyz)2 (i.e., π2) ground state in contrast to the (d)2 (i.e., σ2) configuration of 1. The σ/π mixing circumvents the constraints of orbital symmetry for both cyclometalation and dihydrogen addition.
Electrochemical Study of the EuIII/EuII Redox Properties of Complexes with Potential MRI Ligands
Authors: Gál Miroslav , Kielar Filip , Sokolová Romana , Ramešová Šárka , Kolivoška Viliam 
Published: May 2013

AbstractProperties of the EuIII/EuII redox couple, in the presence of one of a group of different ligands of ligands, were investigated using several electrochemical methods. Ligands used in this study included cyclodextrins, polyazamacrocycles and poly(aminocarboxylates). The poly(aminocarboxylate) containing ligands currently used as MRI contrast agents (DTPA, DOTA) as well as newly developed ligands [1,4‐DOTA(GAC12)2, 1,7‐DOTA(GAC12)2] with potential use as MRI contrast agents were studied. Cyclic voltammetry, phase sensitive AC voltammetry, DC polarography and highly effective electrochemical impedance spectroscopy were utilised to elucidate the mechanism of the reduction/oxidation of the Eu ion in the presence of these compounds. Stability constants of the EuIII and/or EuII complexes and heterogeneous rate constants of the charge transfer were determined. Theoretical calculations of molecular volumes and diffusion coefficients were performed as well.
Effect of emulsifier type, pH and iron on oxidative stability of 5% fish oil‐in‐water emulsions
Authors: Nielsen Nina Skall , Horn Anna Frisenfeldt , Jacobsen Charlotte 
Published: May 2013

The effect of using different emulsifiers on lipid oxidation in 5% w/w fish oil‐in‐water emulsions was investigated. Emulsifiers included two of milk protein origin (whey protein isolate (Whey) or sodium caseinate (Cas)), soy lecithin (Lec) or emulsifiers high in milk phospholipid (20 or 75%). Forty different emulsions were produced with the five different emulsifiers. For each emulsifier, emulsions were prepared at two concentrations (0.2 and 0.75 wt%) at pH 3 or 7 and with or without added iron. Emulsions were stored in closed bottles in the dark at RT (20°C) for up to 7 days (with added iron) or 42 days (without added iron). Physical parameters and oxidative stability of the emulsions were investigated by analysis of particle size, zeta potential, primary and secondary oxidation products. Increase in emulsifier concentration generally increased the oxidative stability. Type of emulsifier and physical conditions affected the physical and oxidative stability of the emulsions. A general observation was that emulsions produced with the milk protein based emulsifiers were more oxidatively stable compared with the other emulsions.Practical applications: The overall conclusion from this study was that the oxidative stability of 5% o/w emulsions depended on both emulsifier type, concentration, pH and iron content. An analogous conclusion is most likely also valid in more complex food emulsions with similar or higher lipid contents such as milk drink, dressing, etc. Hence, in such foods the emulsifier and the emulsifier concentration should be carefully chosen in order to minimise lipid oxidation. However, milk protein‐based emulsifiers could be a better choice than emulsifiers with higher content of phospholipids independent of emulsifier concentration, pH and iron content.
Synthesis and Optical Properties of Difluorobora‐s‐diazaindacene Dyes with Trifluoromethyl meso‐Substituents
Authors: Sobenina Lyubov N. , Petrova Olga V. , Petrushenko Konstantin B. , Ushakov Igor A. , Mikhaleva Albina I. , Meallet‐Renault Rachel , Trofimov Boris A. 
Published: May 2013

AbstractA series of meso‐CF3‐4,4‐difluoro‐4‐bora‐3a,4a‐diaza‐s‐indacene (BODIPY) dyes with aryl and hetaryl substituents at the C‐3 and C‐5 positions, both symmetric and asymmetric, have been synthesized in 36–90 % yields by a new strategy involving as the key step the condensation of 2,2,2‐trifluoro‐1‐(5‐arylpyrrol‐2‐yl)‐1‐ethanols with diverse 2‐arylpyrroles. The starting 2,2,2‐trifluoro‐1‐(5‐arylpyrrol‐2‐yl)‐1‐ethanols are easily prepared by reduction of the available 2‐trifluoroacetyl‐5‐arylpyrroles. The synthesized dyes fluoresce in a longer wavelength region (626–698 nm) with high quantum yield (0.84–0.99).
Photochemical Synthesis of Phenanthridines: Exploring Fluoro and Protected Catechol Substitution
Authors: Linsenmeier Anna M. , Williams Craig M. , Bräse Stefan 
Published: May 2013

AbstractSubstituted phenanthridines, such as the natural product trispheridine, have been accessed by the practical photochemical cyclization of N‐benzylanilines. Functionalities, with a focus on fluoro substituents and protected catechols, are well tolerated on both the A and C rings. The phenanthridines were accessed in good to very good yields (up to 95 %) from iodinated substrates, whereas brominated substrates performed poorly in comparison (0–48 %).
The impact of superordinate identification on the justification of intergroup inequalities
Authors: Jaśko Katarzyna , Kossowska Małgorzata 
Published: May 2013

AbstractPrevious research on superordinate identification demonstrated the positive effects of such identification on intergroup relations. Our study investigated the hypothesis that superordinate identity increases acceptance of intergroup inequalities among members of low‐status groups. The results obtained from two studies supported our predictions. Superordinate identification increased the justification of unequal funding by members of the disadvantaged group (Study 1) and the acceptance of displaying religious symbols in public places among non‐believers (Study 2). In contrast, identification with the low‐status subgroup decreased perceived legitimacy of unequal intergroup arrangements. The results demonstrate that superordinate identification can have a negative influence on willingness to act in line with subgroup interest among members of disadvantaged groups. Copyright © 2013 John Wiley & Sons, Ltd.
Differential effects of female and male candidates on system justification: Can cracks in the glass ceiling foster complacency?
Authors: Brown Elizabeth R. , Diekman Amanda B. 
Published: May 2013

AbstractDespite women's increasing representation in elected offices across a range of countries, women remain a minority of elected officials. Although greater gender equality in political leadership may be assumed to promote gender equality in other domains, the presence of female candidates might ironically facilitate attitudes associated with legitimizing gender inequality. Using experimental methods, we demonstrate that the presence of a female political candidate, relative to a male political candidate, leads to greater beliefs that the sociopolitical system is just (Experiment 1), greater legitimacy of the gender status hierarchy (Experiment 2), and greater implicit preference for stability (Experiment 3). Ironically, within a context in which women are generally underrepresented as political leaders, the increasing presence of women as political candidates might lead to stronger legitimization of the current sociopolitical system, potentially inhibiting social change. Copyright © 2013 John Wiley & Sons, Ltd.
Combating the mental health stigma with nostalgia
Authors: Turner Rhiannon N. , Wildschut Tim , Sedikides Constantine , Gheorghiu Mirona 
Published: May 2013

AbstractWe report research implicating nostalgia as an intrapersonal means of warding off the stigmatization of persons with mental illness. We hypothesized and found that nostalgia about an encounter with a person with mental illness improves attitudes toward the mentally ill. In Experiment 1, undergraduates who recalled an encounter with a mentally ill person while focusing on central (vs. peripheral) features of the nostalgia prototype reported a more positive outgroup attitude. This beneficial effect of nostalgia was mediated by greater inclusion of the outgroup in the self (IOGS). In Experiment 2, undergraduates who recalled a nostalgic (vs. ordinary) interaction with a mentally ill person subsequently showed a more positive outgroup attitude. Results supported a serial mediation model whereby nostalgia increased social connectedness, which predicted greater IOGS and outgroup trust. IOGS and outgroup trust, in turn, predicted more positive outgroup attitudes. We ruled out alternative explanations for the results (i.e., mood, perceived positivity, and typicality of the recalled outgroup member). The findings speak to the intricate psychological processes underlying the prejudice‐reduction function of nostalgia and their interventional potential. Copyright © 2013 John Wiley & Sons, Ltd.
High‐Performance MxSb–Al2O3–C (M=Fe, Ni, and Cu) Nanocomposite‐Alloy Anodes for Sodium‐Ion Batteries
Authors: Kim Il Tae , Allcorn Eric , Manthiram Arumugam 
Published: May 2013

AbstractMxSb–Al2O3–C (M=Fe, Ni, and Cu) nanocomposites were synthesized by mechanochemical reduction of Sb2O3 with Al and other metals (Fe, Ni, and Cu) in the presence of carbon and they were subsequently assessed as potential anode materials for sodium‐ion batteries. Various characterization methods, including XRD and transmission electron microscopy (TEM), reveal that the as‐prepared nanocomposites consist of nanostructured MxSb particles in a matrix of amorphous Al2O3 and conductive carbon. The incorporation of Al2O3 and a conductive metal‐support into the Sb–C composite leads to an improved cycle life. The Cu2Sb–Al2O3–C and NiSb–Al2O3–C electrodes show, respectively, 80 and 90 % capacity retention after 70 cycles at a current rate of 100 mA g−1, and the MxSb–Al2O3–C composite anodes display >70 % retention at high current densities of 10 000 mA g−1. These characteristics are attributed to the presence of both a metal framework to support the electrochemically active Sb, which results in a low electrode impedance, and a ceramic oxide and conductive carbon matrix, which reduce the agglomeration of nanoparticles as well as buffer the volume expansion/contraction during alloying/dealloying. Ex situ XRD analysis of the sodium‐storage mechanism in MxSb–Al2O3–C composite anodes confirms the formation of a Na3Sb phase during sodiation.