bluuebunny/crossref_metadata_2025_split huggingface dataset:
An ℋ︁∞ control system design method for parameter sensitivity reduction
Authors: Ohkubo Keiji , Aoki Kazuhiko , Ohmori Hiromitsu , Sano Akira 
Published: July 2007

AbstractThere are two types of uncertainty in a system to be controlled: parameter errors and unstructured uncertainty. Conventional ℋ︁∞ control synthesis in the presence of unstructured uncertainty has been developed on the basis of frequency‐domain criteria using the state‐space method. It is difficult to consider the sensitivity to parameter errors in the frequency domain, however. In this paper, the authors propose an ℋ︁∞ controller design method which can cope with parameter errors by introducing a trajectory sensitivity model into the conventional ℋ︁∞ controller design method. It is also shown that the obtained controller is equivalent to a dynamic state feedback controller whose order becomes high. Thus, controller reduction is adopted.
A realization of real filters using complex resonators
Authors: Muto Cosy , Kambayashi Noriyoshi 
Published: July 2007

AbstractThe synthesis of real filters using the complex coefficient filters is considered interesting in digital signal processing, since one can expect that the freedom in the design will be increased and the coefficient sensitivity will be decreased. In analog signal processing, on the other hand, there are few reports on the design of the filter from a similar viewpoint.This paper discusses the complex coefficient filter on the analog domain, which is obtained by shifting the frequency response of the lower‐order real filter on the frequency axis, together with its application to synthesize real filters.First, the complex analog transfer function is introduced, which is obtained by shifting the frequency response of the real filter on the frequency axis. The elements for the complex analog signal processing are defined. Then, using those elements, the complex resonator is proposed.The proposed circuit can be considered as a special class of the biquad circuit, where the complex conjugate poles of the second‐order section are specified. As a result of sensitivity analysis, the proposed circuit is shown to have the same or lower sensitivity as that of the biquad circuit. Another feature is that the circuit can be realized using the lossy integrators and can be used as the functional unit in the active filter to be operated at higher frequencies. Design examples using the operational amplifier and their experimental results are shown to verify the effectiveness of the proposed method.
Fir and IIR SC decimation filters using parallel cyclic‐type circuit for high frequency and low power consumption
Authors: Hirata Yoshinori , Takahashi Nobuaki , Kikuchi Katsumi , Hashimoto Mitsuru , Takebe Tsuyoshi 
Published: July 2007

AbstractThe filter on monolithic LSI for communication and measurement is realized by the digital signal processor (DSP) or the switched capacitor (SC) circuit. In the analog‐digital interface, high‐speed processing, applications requiring low power consumption operations, and low cost, SC circuits will be superior to the DSP circuits. The authors devised the SC circuit called parallel cyclic‐type, which can further enhance the high‐frequency and low power‐consumption operation. The single‐rate FIR and IIR filters have been proposed using the circuit.In this paper, the high frequency and low power‐consumption FIR and IIR decimation filters using the SC parallel cyclic‐type circuits are proposed. The effects of the finite gain bandwidth (GB product) of the operational amplifier and of the parasitic capacitance on the filter characteristics are analyzed.The proposed filters and the decimation filter by Franca et al. are constructed using discrete elements and the characteristics are examined. The characteristics are compared with the computer simulations. It is verified as a result that the proposed decimation filter has a much better performance than the filter by Franca et al.
A method to determine a minimal set of polynomials capable of generating a given finite N‐dimensional array
Authors: Iwamura Keiichi , Imai Hideki 
Published: July 2007

AbstractThe Berlekamp‐Massey algorithm and the Euclidean algorithm are well known as decoding methods for Reed‐Solomon codes. Sakata's algorithm, which finds the minimal set of polynomials that generate a given two‐dimensional (2‐D) array, is used as a decoding method for algebraic‐geometric codes; Reed‐Solomon codes are a subclass of the algebraic‐geometric codes. The Sakata algorithm is an extension of the Berlekamp‐Massey algorithm to two dimensions, but there is no corresponding extension of the Euclidean algorithm to give it the edge in implementation. Theorems are presented here to demonstrate in general the equivalence between the Berlekamp‐Massey algorithm and the Euclidean algorithm and from these theorems a 2‐D Euclidean algorithm that corresponds to the 2‐D Berlekamp‐Massey algorithm (Sakata algorithm) is developed. Moreover, the algorithms described here correspond to the multidimensional Berlekamp‐Massey algorithm and to the Kamiya‐Miura algorithm, a modification of the Sakata algorithm. The algorithms proposed in this paper may be implemented at high speeds with parallel processing, a difficult task for the Berlekamp‐Massey algorithm.
An efficient method for the limit estimation of slowly convergent sequence of numbers
Authors: Iijima Taizo 
Published: July 2007

AbstractAdvances made in electronic computers allows the limit value of the sequence to be determined much more easily now than in the past. However, a problem still arises frequently in which it is difficult to determine the limit value with a high accuracy when a tremendous calculation is required in the determination of each term of the sequence. This paper proposes a theoretical method to estimate the limit value of the sequence with a high accuracy from the viewpoint of the recognition theory. By examining the gradual change of the sequence, the character inherent to the sequence is derived. By utilizing the character, the limit value can be estimated with a high accuracy directly from a small number of terms of the sequence. Lastly, the effectiveness of the proposed estimation method is demonstrated by simple examples.
Diastereoselective Synthesis of Highly Constrained Spiro‐β‐Lactams by the Staudinger Reaction Using an Unsymmetrical Bicyclic Ketene
Authors: Trabocchi Andrea , Lalli Claudia , Guarna Francesco , Guarna Antonio 
Published: July 2007

AbstractA rigid bicyclic ketene was used to generate highly constrained polycyclic spiro‐β‐lactams through the Staudinger reaction. Depending on the imine component, high diastereoselectivity was observed in the process, leading to mainly the cis diastereoisomer in the case of aromatic imines. This results from an anti addition of the imine to the ketene, followed by a conrotatory ring closure in which the heteroatom at the 6‐position of the scaffold rotates outward because of torquoelectronic effects.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Electrochemical Studies of the Interaction of 2‐Nitroacridone with DNA and Determination of DNA
Authors: Chen Jinghua , Zhang Jing , Zhuang Qian , Chen Jing , Lin Xinhua 
Published: July 2007

AbstractA new acridone derivate 2‐nitroacridone (NAD) was synthesized and a new method of electrochemical probe has been proposed for the determination of salmon sperm DNA based on its interaction with NAD. The electrochemical behavior of interaction of NAD with DNA was investigated on glassy carbon electrode (GCE). In the presence of DNA, the peak current of NAD decreases and the peak potential shifts to a more positive potential without appearance of a new peak. The binding ratio between NAD and salmon sperm DNA was calculated to be 2 : 1 and the binding constant was 3.19×105 L/mol. The decrease of the peak current (ΔIp) of NAD was proportional to the concentration of DNA in the range from 1.55×10−7 M to 2.02×10−6 M with the detection limit of 3.10×10−8 M, and DNA of synthetic sample was determined satisfactorily. Additionally, the binding mechanism was preliminarily discussed. The mode of interaction between NAD and DNA was found to be intercalation binding.
Complexation of cage thiones with bisphosphine platinum(0) complexes
Authors: Petzold Holm , Görls Helmar , Weigand Wolfgang , Romanski Jaroslaw , Mloston Grzegorz 
Published: July 2007

AbstractThe syntheses of thiocarbonyl derivatives of pentacyclo[5.4.0.02,6.03,10.05,8]‐8,10‐dione (1) using bis(trimethylsilyl)sulfide 12 or H2S/HCl as a thionating agent are reported. The complexation reactions of monothioketone 3, dimethoxythioketone 5, and thioxoketone 6 with bisphosphine platinum(0) complexes were investigated. The formed complexes 9a–c and 11 were characterized by 1H, 31P NMR, IR spectroscopy, as well as mass spectrometry and elemental analysis. X‐ray crystal structure analyses of 5 and complexes 9a and 11 were performed. The structure analyses show that thiocarbonyl derivatives are coordinated in the η2‐mode. In each case, only one isomer is formed, with the platinum complex fragment selectively coordinated in the exo‐position. © 2007 Wiley Periodicals, Inc. Heteroatom Chem 18:584–590, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20332
Synthesis of thienyl‐containing photochromes (dithienylethenes, fulgides, fulgimides, and spirocompounds)
Authors: Krayushkin Mikhail M. , Barachevsky Valery A. , Irie Masahiro 
Published: July 2007

Abstract© 2007 Wiley Periodicals, Inc. Heteroatom Chem 18:557–567, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20334
Oxidation of cyclic polysulfides fused to aromatics
Authors: Sato Ryu 
Published: July 2007

AbstractConsiderable interest has been focused on the reactivity and oxidation of cyclic polysulfides such as benzopentathiepins and benzotrithioles. In this review, some oxidations of cyclic polysulfides fused to aromatics such as bezopentathiepins and related compounds with a few oxidizing reagents are described. © 2007 Wiley Periodicals, Inc. 18:482–488, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20347
Plant manager covert behavior in rejection of automation technology: Case study
Authors: Whitman Kirwin A. 
Published: July 2007

AbstractThis case study examines two automation project rejections. These were traced past initially given postponement reasons (which the plant managers knew would be acceptable to corporate management) to expose hidden actual rejection reasons. The latter involved the plant manager's self‐interest, stress, or perception of cultural rules (which are likely to be hidden from corporate management). The implication of the study is that there is a need for research directed toward plant manager behavioral effects regarding automation technology.
Questioning analysis and design methods in development of interdisciplinary manufacturing systems design: The case of CIM‐OSA
Authors: Havn Erling 
Published: July 2007

AbstractThe complexity of designing computer‐supported manufacturing systems has lead to the development of several methodologies and tools to support the design. One of them is CIM‐OSA, developed within the ESPRIT program. In this article, CIM‐OSA is discussed and evaluated from a sociotechnical point of view.
Analytical modeling and experimental study of human workload in scheduling of advanced manufacturing systems
Authors: Bi Shuxin , Salvendy Gavriel 
Published: July 2007

AbstractHuman supervisory control of advanced manufacturing systems is characterized by dynamic, discrete, and random decision‐making tasks. With humans in the system control loop, there is a concern on cognitive task allocation based on human mental workload and performance. Traditional task analysis techniques based on observable actions are no longer appropriate. In this article, an analytical model was developed based on the conceptual model of human workload prediction proposed by Salvendy (Salvendy, 1993). This model is suggested to predict task load and human workload based on system engineering parameters: task arrival rate, task complexity, task uncertainty, and task performance requirement. This article also reports on an experimental study in which the sensitivity of the proposed engineering parameters on human workload and the validity of the analytical model were studied. A real time scheduling simulator of an advanced manufacturing system was implemented and configured with experiment data. The results support strongly the analytical model and further the conceptual model of human workload prediction. It is expected that the derived cognitive task analysis method and prediction models could be used for dynamic decision‐making system design with random task arrivals.
Unexpected variability of millennium green: Structural color of Japanese jewel beetle resulted from thermosensitive porous organic multilayer
Authors: Adachi Eiki 
Published: July 2007

AbstractThe Japanese jewel beetle (Chrysochroa fulgidissima) is one of the beautiful beetles showing metallic green color that is kept over a millennium. This is a typical structural color resulting from a multilayer, frequently seen in insects. It was found that the elytra unexpectedly change the color from original green to blue or red by heating at 200°C or by immersing in bromoform for over 1 month. This variability implies that the multilayer consists of a thermosensitive porous material. The color change induced by heating was accompanied with elytron shrinkage; the sensitivity of the reflection peak was −0.6 nm/°C in 30–65°C. The porous structure was determined by positron annihilation lifetime spectroscopy; the averaged pore radius was around 0.25–0.30 nm, which is close to the size of the bromoform molecule. These features prove the thermosensitivity and porous structure of the multilayer although inunusual environments. J. Morphol., 2007. © 2007 Wiley‐Liss, Inc.
Profiling and imaging of tissues by imaging ion mobility‐mass spectrometry
Authors: McLean John A. , Ridenour Whitney B. , Caprioli Richard M. 
Published: July 2007

AbstractMolecular profiling and imaging mass spectrometry (IMS) of tissues can often result in complex spectra that are difficult to interpret without additional information about specific signals. This report describes increasing data dimensionality in IMS by combining two‐dimensional separations at each spatial location on the basis of imaging ion mobility‐mass spectrometry (IM‐MS). Analyte ions are separated on the basis of both ion‐neutral collision cross section and m/z, which provides rapid separation of isobaric, but structurally distinct ions. The advantages of imaging using ion mobility prior to MS analysis are demonstrated for profiling of human glioma and selective lipid imaging from rat brain. Copyright © 2007 John Wiley & Sons, Ltd.
Product placement and tourism‐oriented environments: an exploratory introduction
Authors: Weaver Adam 
Published: July 2007

AbstractThis paper examines the ‘physical’ placement of products within tourism‐oriented environments. Product placement is usually associated with the incorporation of branded products into media vehicles. However, a type of placement also occurs within ‘non‐store’ spaces used by tourists. Product placement within these spaces may increase awareness about certain products and, ultimately, induce purchases. Tourism‐oriented environments may enhance the attractiveness of placed products because they enable consumers to interact with and appraise these products before they purchase them. A number of examples are provided, which demonstrate that marketers seek to create encounters between tourists and products. Copyright © 2007 John Wiley & Sons, Ltd.
Forced compliance in family decision‐making
Authors: Seymour Daniel T. 
Published: July 2007

Abstract‘Forced compliance,’ a situation in which a person engages in a behavior that he or she would normally deem as inappropriate, is used in this study to examine conflict resolution in family decision‐making. Specific hypotheses related to a major purchase decision are tested in a field study. The results indicate that those husbands or wives who have been forced to engage in counterattitudinal behaviors find numerous ways to justify their inconsistencies.
A circuit model for the inductive strip in homogeneous finline
Authors: Knorr Jeffrey B. , Morua Michael L. 
Published: July 2007

AbstractThis article describes a circuit model for infinitesimally thin inductive strips centered in homogeneous finline. The model is valid for 0.1 ≤ W/b ≤ 1.0, 0.01 ≤ T/a, and 0.4 ≤ b/a ≤ 0.5 when frequency is in the normal operating band for the rectangular waveguide shield. The error is less than 2.5%.
On the application of fast wavelet transform to the integral‐equation solution of electromagnetic scattering problems
Authors: Kim Hyeongdong , Ling Hao 
Published: July 2007

AbstractThe fast wavelet transform is applied to the integral‐equation solution of two‐dimensional electromagnetic scattering problems. In the wavelet transform domain, the moment‐method impedance matrix becomes sparse, and sparse matrix algorithms can be utilized to solve the resulting matrix equation. Using the fast wavelet transform in conjunction with the conjugate gradient method, we present the time performance for the solution of a dihedral corner reflector. The total computational complexity is found to be reduced without sacrificing much accuracy. The reason for the sparsity of the wavelet domain representation is discussed and additional areas of research are pinpointed. © 1993 John Wiley & sons, Inc.
Resonant frequency of a triangular microstrip antenna
Authors: Güney K. 
Published: July 2007

AbstractA new very simple effective side length and effective relative dielectric constant expressions are presented for a triangular microstrip antenna. The theoretical resonant‐frequency results obtained from the magnetic wall cavity model with this new effective side length and effective relative dielectric constant expressions are in very good agreement with experimental results available in the literature. © 1993 John Wiley & Sons, Inc.
Radiation characteristics of a microstrip traveling‐wave antenna‐power balance
Authors: Alaeddine A. , Reineix A. , Jecko B. 
Published: July 2007

AbstractThe radiation behavior of a microstrip traveling‐wave antenna is theoretically analyzed using a time‐domain method based on the FDTD. The time evolution of the fields and currents computed by the FDTD can be given in the frequency domain on a large bandwidth using Fourier transforms. Then it is possible to deduce classical parameters as the radiated field, the gain, and the power delivered by the antenna. © 1993 John Wiley & Sons, Inc.
On the discretization process involved in the staircase‐approximation technique for analyzing radially inhomogeneous optical fibers
Authors: Guerreiro Neves M. V. Das , Faria J. A. Brandao 
Published: July 2007

AbstractThe accuracy of staircase‐approximation techniques that are used for analyzing optical fiber properties depends on how certain discretization parameters are chosen. In this work we discuss and develop criteria for the choice of those parameters. Particular emphasis is placed on a physics‐based criterion we suggest be followed for the specification of the refractive index of the layers into which the fiber core is discretized. © 1993 John Wiley & Sons, Inc.
Two‐lobe pattern from rectangular patch by electromagnetic coupling
Authors: Yousefi M. H. , Alyer R. C. , Karekar R. N. 
Published: July 2007

AbstractA rectangular microstrip patch antenna is electromagnetically excited by microstrip line, but fed from the short side. The effect on the radiation pattern of variation of the feedline inset/off set position is studied experimentally. It is observed that the radiation pattern has two distinct lobes with variable, asymmetric amplitudes. The angle between the two lobes is found to be about 95° ± 10°. But the lobe amplitudes show a periodic variation with normalized inset for each offset value. © 1994 John Wiley & Sons, Inc.
Full‐wave hybrid‐mode analysis of general structure of coplanar waveguides by using the method of lines
Authors: Tao Y. M. , Fang D. G. , Li X. G. 
Published: July 2007

AbstractIn this article the method of lines combined with the generalized spectral‐domain immittance approach is used as a full‐wave analysis to the general structure of coplanar waveguides. Numerical examples show the validity of this new method. It can also be used to analyze multilayered or multiregion structures. © 1994 John Wiley & Sons, Inc.
Analysis of microstrip multiport junctions using the multimode boundary integral method
Authors: Gan Y. B. , Leong M. S. , Kool P. S. 
Published: July 2007

AbstractThe Boundary integral method (BIM) is applied to a number of planar microstrip multiport junctions. The E fields for coupling ports are expressed as multimode series, enabling direct calculation of S parameters from the resulting matrix equation. Results obtained for cross junctions, T junctions, Y junctions, and 90° bends agree very well with those obtained from full‐wave analysis and other methods. © 1994 John Wiley & Sons, Inc.
Two‐LD‐pumped Pr‐doped fiber amplifier module with a 1.30‐μm signal gain of 17 dB
Authors: Shimizu Makoto , Yamada Makoto , Temmyo Jiro , Wada Masato , Kanamori Terutoshi , Terunuma Yukio , Ohishi Yasutake , Sudo Shoichi 
Published: July 2007

AbstractWe have constructed a Pr‐doped fluoride fiber amplifier module pumped by two laser diodes (LDs). This module has a maximum signal gain of 17 dB at 1.30 μm. The saturated output power at 3‐dB gain compression is 5 dBm. © 1994 John Wiley & Sons, Inc.
Optimum directivity of a uniformly spaced broadside array of collinear half‐wave dipoles
Authors: Rashed‐Mohassel J. 
Published: July 2007

AbstractA closed‐form expression is obtained for the directivity of a uniformly spaced broadside array of collinear half‐wave dipoles with similar excitations. The directivity is then optimized and the amplitude distribution is obtained for various spacings of the dipoles and different numbers of elements. A comparison between the optimum and nominal directivity is presented. It is observed that for increased separation, the optimum and the nominal directivities are practically the same. © 1994 John Wiley & Sons, Inc.
Optimally filtered self‐synchronized PPM PIN‐BJT receivers
Authors: Elmirghani Jaafar M. H. , Cryan Robert A. 
Published: July 2007

AbstractA common‐collector common‐emitter PIN‐BJT receiver topology is considered for use with optical‐fiber pulse position modulation (PPM). The PPM PIN‐BJT system is shown to offer a sensitivity improvement of 8.6 dB over a comparable PCM system when both systems are operating at 140 Mbit/s and λ = 1.3 μm. The sensitivity penalty in self‐synchronized PPM due to slot clock jitter is considered. This is shown to be significant (3.6 and 6.3 dB) at the set of parameters considered. An optimum presynchronization filter is derived and shown to result in the minimization of the jitter penalty. The inclusion of the filter resulted in reduction in the jitter penalty to about 0.1 dB for the two sets of parameters considered. © 1994 John Wiley & Sons, Inc.
3D FDTD characterization of interconnections between MMIC and MIC modules
Authors: Visan S. , Picon O. , Hanna V. Fouad 
Published: July 2007

AbstractA 3D finite‐difference time‐domain (FDTD) method is used to characterize interconnections between MMIC (monolithic microwave integrated circuits) and MIC (microwave integrated circuits) modules. The scattering parameters are calculated in the 0–40‐GHz band for an interconnection between a microstrip line on a GaAs substrate (MMIC) and a microstrip line on an alumina substrate (MIC). The variation of the interconnection scattering parameters as a function of its geometrical parameters is presented. © 1994 John Wiley & Sons, Inc.