401   Timing jitter eater for optical pulse trains Timing jitter eater for optical pulse trains    2003 Using a single phase modulator and dispersive fiber, we demonstrate a 12-dB reduction in the phase noise of a train of 6.5-ps pulses at a repetition rate of 10 GHz. A prechirp fiber is shown to improve performance. 查看全文

402   Bundling up Carbon Nanotubes through Wigner Defects Bundling up Carbon Nanotubes through Wigner Defects Antônio J. R. da Silva,*† A. Fazzio,† and Alex Antonelli‡    2005 We show, using ab initio total energy density functional theory, that the so-called Wigner defects, an interstitial carbon atom right beside a vacancy, which are present in irradiated graphite, can also exist in bundles of carbon nanotubes. Due to the geometrical structure of a nanotube, however, this defect has a rather low formation energy, lower than the vacancy itself, suggesting that it may be one of the most important defects that are created after electron or ion irradiation. Moreover, th... 查看全文

403   STATISTICAL PROPERTIES OF TIMING JITTER IN A PAM TIMING RECOVERY SCHEME. STATISTICAL PROPERTIES OF TIMING JITTER IN A PAM TIMING RECOVERY SCHEME.    1974 A new technique is presented for evaluating the performance of a popular type of timing recovery circuit for baseband synchronous PAM data signals. The timing circuit consists of a square-law device followed by a narrow-band filter tuned to the pulse repetition frequency along with provision for reshaping the pulses entering the timing path (prefiltering). The output of the timing circuit is a nearly sinusoidal timing wave whose zero crossings indicate the appropriate sampling instants for demod... 查看全文

404   Cadherin expression delineates the divisions of the postnatal and adult mouse amygdala Cadherin expression delineates the divisions of the postnatal and adult mouse amygdala Kurt A. Jellinger    0 The amygdaloid complex represents a group of telencephalic nuclei and cortical areas that control emotional and social behavior. Amygdalar development is poorly understood. It is generally accepted that the structures of the amygdala originate from the neuroepithelium at both sides of the pallial-subpallial boundary. In the present study, we mapped the expression of 13 members of the cadherin superfamily of cell adhesion molecules, which provide an adhesive code for the development and maintenan... 查看全文

405   Nyström’s Iterative Variant Methods for the Solution of Cauchy Singular Integral Equations Nyström’s Iterative Variant Methods for the Solution of Cauchy Singular Integral Equations Apostolos Gerasoulis    0 Iterative methods for the solution of algebraic systems and integral equations are becoming increasingly popular, because they can take advantage of the speed of vector and parallel computers. In this paper, Nystr?m’s iterative variant methods developed for the solution of Fredholm integral equations are extended to the solution of Cauchy singular integral equations. Gauss–Chebyshev and Lobatto–Chebyshev quadrature approximations are used to define two iterative algorithms, GIV and LIV, and thei 查看全文

406   A reduced jitter-sensitivity clock generation technique for continuous-time ΣΔ modulators A reduced jitter-sensitivity clock generation technique for continuous-time ΣΔ modulators    2010 A clock generation technique for reducing the clock-jitter sensitivity of Switched current (SI) Return-to-Zero (RZ) DAC in CT ΣΔ modulators is presented in this paper. While realizing the clock-jitter insensitivity, this technique ensures that the feedback period can be utilized more efficiently so that the amplitude of feedback current can be reduced. The proposed technique employs simple digital elements to generate a fixed-pulse-width feedback control clock. It was verified in a 2... 查看全文

407   A high order Bi-phase modulation scheme for UWB transmission A high order Bi-phase modulation scheme for UWB transmission    2004 The goal of this paper is to present a novel scheme to achieve timing jitter-robust in ultra-wideband (UWB) systems. The proposed idea is to couple High Order Monocycle (HOM) with Bi-phase Modulation (BPM). Analysis and simulation results show that our proposed scheme outperforms the conventional ones in terms of anti-timing jitter ability and could also enable higher data throughput. © 2004 IEEE. 查看全文

408   N-acetylcysteine as an adjuvant to clomiphene citrate for successful induction of ovulation in infertile patients with polycystic ovary syndrome N-acetylcysteine as an adjuvant to clomiphene citrate for successful induction of ovulation in infertile patients with polycystic ovary syndrome Donghui LI    2012 Aim: The aim of this study was to evaluate the effect of oral N-acetylcysteine (NAC) administration as an adjuvant to clomiphene citrate (CC) on induction of ovulation outcomes in patients with polycystic ovary syndrome (PCOS). 查看全文

409   Target Design: Changing Inflation Performance and Persistence in Industrial Countries Target Design: Changing Inflation Performance and Persistence in Industrial Countries Unknown Authors    0 of countries that have formally adopted the policy. Does inflation targeting influence the time series properties of inflation? To explore this issue, I estimate a simple model that illustrates whether inflation persistence has changed in a significant fashion in inflation targeting vs. non inflation-targeting countries. The paper concludes by noting that it is too early for a definitive assessment of inflation targeting. Yet, from the standpoint of economic analysis and empirical performance to... 查看全文

410   Birefringence-mediated timing jitter in soliton transmission Birefringence-mediated timing jitter in soliton transmission    1994 This paper presents the development of mathematical models to represent the effects of residual birefringence of optical fibers on transmission of solitons over long distances. The first is the differential transit time between orthogonally polarized solitons being accumulated over time, and the other is noise modulation of the polarization states of the pulses inducing a jitter in the arrival time of the pulse under the influence of the birefringence. 查看全文

411   A new shampoo based on neem (Azadirachta indica) is highly effective against head lice in vitro A new shampoo based on neem (Azadirachta indica) is highly effective against head lice in vitro Jörg Heukelbach, Fabíola A. S. Oliveira;Richard Speare    2006 Because topical compounds based on insecticidal chemicals are the mainstay of head lice treatment, but resistance is increasing, alternatives, such as herbs and oils are being sold to treat head lice. To test a commercial shampoo based on seed extract of Azadirachta indica (neem tree) for its in vitro effect, head lice (n=17) were collected from school children in Australia and immersed in Wash-Away Louse™ shampoo (Alpha-Biocare GmbH, Germany). Vitality was evaluated for more than 3 h... 查看全文

412   Dual-wavelength mode locked erbium fibre laser with low inter-pulse-stream timing jitter Dual-wavelength mode locked erbium fibre laser with low inter-pulse-stream timing jitter    1995 We present an experimental demonstration of a novel, actively mode-locked, dual-wavelength erbium fibre laser configuration with very low inter-pulse-stream timing jitter (standard deviation = 900 fs). 查看全文

413   Matthew Higgins and Thomas Klitgaard Asia’s Trade Performance after the Currency Crisis Matthew Higgins and Thomas Klitgaard Asia’s Trade Performance after the Currency Crisis Unknown Authors    0 ? Countries experiencing an abrupt shift from large capital inflows to large outflows need to make a matching improvement in their current account balance. ? In 1997-98, the Asian crisis countries achieved such an improvement primarily through lower spending on imports, measured in dollars terms. ? However, a breakdown of trade flows into price and volume components reveals that higher export volumes, as well as lower import volumes, contributed to the current account adjustment. ? Dollar import 查看全文

414   Enhanced Oxygen Buffering by Substitutional and Interstitial Ni Point Defects in Ceria: A First-Principles DFT+U Study Enhanced Oxygen Buffering by Substitutional and Interstitial Ni Point Defects in Ceria: A First-Principles DFT+U Study Xinquan Wang†, Meiqing Shen*†‡ and Jun Wang†    2010 The defect chemistry and electronic structure of NiO/CeO2 solid solutions are studied by means of DFT+U calculations in the limit of low Ni doping. We consider four representative solid solutions in which the Ni atoms are present as substitutional and interstitial point defects in bulk crystalline CeO2, both in its stoichiometric form. and in the presence of O vacancies. In all cases, Ni-doping significantly enhances the O buffering effect of ceria, controlled by O vacancy formation, but the act... 查看全文

415   The Performance of Disbursement Procedure of Public Works in Thailand The Performance of Disbursement Procedure of Public Works in Thailand Israngkura Na Ayudhya B, Kunishima M    0 Abstract—This paper analysis performance of disbursement procedure of public works project in Thailand. The results of research were summarised based on contracts, submitted invoice, inspection dated, copies of disbursement dated between client and their main contractor and interviewed with persons involved in central and local government projects during 1994-2008 in Thailand. The data collection was to investigate the disbursement procedure related to performance in disbursement during construc 查看全文

416   Time for a common standard for cost-effectiveness in Europe? Time for a common standard for cost-effectiveness in Europe? Bengt Jönsson    2006 查看全文

417   On Defects in Solids On Defects in Solids M. Apostol    1996 查看全文

418   Role of Defects in Single-Walled Carbon Nanotube Chemical Sensors Role of Defects in Single-Walled Carbon Nanotube Chemical Sensors Joshua A. Robinson, Eric S. Snow,* Ştefan C. Bǎdescu, Thomas L. Reinecke, and F. Keith Perkins    2006 We explore the electronic response of single-walled carbon nanotubes (SWNT) to trace levels of chemical vapors. We find adsorption at defect sites produces a large electronic response that dominates the SWNT capacitance and conductance sensitivity. This large response results from increased adsorbate binding energy and charge transfer at defect sites. Finally, we demonstrate controlled introduction of oxidation defects can be used to enhance sensitivity of a SWNT network sensor to a variety of c... 查看全文

419   Patterns of body weight in middle-aged and older Americans, by gender and race, 1993–2000 Patterns of body weight in middle-aged and older Americans, by gender and race, 1993–2000 Kristi R. Jenkins, Nancy H. Fultz, Stephanie J. Fonda;Linda A. Wray    2003 Objectives: Despite evidence of poor health outcomes associated with excessive weight gain or loss, longitudinal patterns of body weight over the adult life course have not been fully described. This article seeks to address this by examining body weight patterns for middle-aged and older adults.Methods: Panel data from the Health and Retirement Study (HRS) original cohort and the original cohort of the Asset and Health Dynamics Among the Oldest Old (AHEAD) study are used to compare, by social g... 查看全文

420   Iterative circular conebeam CT reconstruction using fast hierarchical backprojection/reprojection operators Iterative circular conebeam CT reconstruction using fast hierarchical backprojection/reprojection operators Jeffrey Brokish    0 This is the first report on a new fast statistical iterative reconstruction algorithm for conebeam with a circular source trajectory, accelerated by InstaRecon's fast O(N3logN) hierarchical cone beam backprojection1 and reprojection algorithms. We report on the results of image quality and run-time comparisons with iterative algorithms based on conventional backprojection and reprojection. We demonstrate that the iterative algorithm introduced here can provide image quality indistinguishable fro... 查看全文

421   Reduction in timing jitter by chirp selection for externally modulated return to zero optical soliton pulse at 10 Gb/s Reduction in timing jitter by chirp selection for externally modulated return to zero optical soliton pulse at 10 Gb/s    2010 We investigate the chirp selection of externally modulated RZ soliton pulse at 10 Gb/s for fiber optical communication systems for the reduction in timing jitter. We have chosen single arm Mach-Zehnder amplitude modulator with sin2 electrical shaped input-output (P-V) characteristic and its chirp range has been varied in the range of -5 to 5. The timing jitter, Q factor and bit error rate (BER) generated for the chirp range has been studied for various fiber lengths and post compensation has bee... 查看全文

422   Incidence, risk factors and short-term mortality of stroke in Vittoria, southern Italy Incidence, risk factors and short-term mortality of stroke in Vittoria, southern Italy F. Iemolo, E. Beghi, C. Cavestro, A. Micheli, A. Giordano;E. Caggia    2002 We determined the incidence, risk factors, and short-term mortality of stroke in a well-defined area of southern Italy, i. e. the city of Vittoria, Sicily (58 833 inhabitants). The medical recores of the local hospitals and the outpatient files of the local neurologist referring to the calendar year 1991 were retrospectively investigated. Stroke was defined according to standard criteria and classified as first-ever (FE) and recurrent (R). Risk factors for stroke were dia... 查看全文

423   Gilles de la Tourette Syndrome: symptomatic treatment based on evidence Gilles de la Tourette Syndrome: symptomatic treatment based on evidence Mary M. Robertson;Jeremy S. Stern    2000 The treatment of the Gilles de la Tourette syndrome has evolved from case reports, clinical experience and more recently blinded trials usually in small numbers of patients. We have reviewed the evidence available to clinicians. The oldest and still most widely prescribed drug, haloperidol, should now not be considered the firstline agent in children as other agents have superior adverse effects profiles. Symptomatic treatment should be targeted to the specific additional... 查看全文

424   Lifetime mating success, sexual selection and life history of fallow bucks ( Dama dama ) Lifetime mating success, sexual selection and life history of fallow bucks ( Dama dama ) A. G. McElligott;T. J. Hayden    2000 We used data from a long-term study (15 years) of fallow deer to report for the first time the lifetime mating success, overall variance in lifetime mating success, and age-specific mortality levels of males. Fallow bucks that gain matings have higher social dominance rank, higher rates of fighting, and invest more in vocal display during the breeding season than unsuccessful males. Therefore, we examined if mating was associated with trade-offs in terms of survival, life... 查看全文

425   Contact Angle Hysteresis Generated by Strong Dilute Defects† Contact Angle Hysteresis Generated by Strong Dilute Defects† Mathilde Reyssat and David Quéré*    2009 Water on solid decorated with hydrophobic defects (such as micropillars) often stays at the top of the defects in a so-called fakir state, which explains the superhydrophobicity observed in such case, provided that the density of defects is small enough. Here we show that this situation provides an ideal frame. for studying the contact angle hysteresis; the phase below the liquid is “perfect” and slippery (it is air), contrasting with pillars’ tops whose edges form. strong pining sites for the c 查看全文

426   The prevalence and associates of depressive disorders in the oldest-old Finns The prevalence and associates of depressive disorders in the oldest-old Finns A. Päivärinta, A. Verkkoniemi, L. Niinistö, S-L. Kivelä;R. Sulkava    1999 Aim: To describe the prevalence and associates of major depression and minor depression among the Finnish non-demented population aged 85 years and older (n = 339). Methods: DSM-III-R criteria were used in diagnosing major depression and dementia. Minor depression was diagnosed by the physician in those who did not fulfil the DSM-III-R criteria for major depression, but had still at least two depressive symptoms. In the first phase, cross-tabulation was used t... 查看全文

427   The Iterative Structure Analysis of Montgomery Modular Multiplication The Iterative Structure Analysis of Montgomery Modular Multiplication Wang Jinbo    0 Montgomery modular multiplication (MMM) plays a crucial role in the implementation of modular exponentiations of public‐key cryptography. In this paper, we discuss the iterative structure and extend the iterative bound condition of MMM. It can be applied to complicated modular exponentiations. Based on the iterative condition of MMM, we can directly use non‐modular additions, subtractions and even simple multiplications instead of the modular forms, which make modular exponentiation operation ve 查看全文

428   Modeling Protein and Oxidative Metabolism in Parkinson’s Disease Modeling Protein and Oxidative Metabolism in Parkinson’s Disease Mathieu Cloutier;Peter Wellstead    0 Elevated levels of reactive oxygen species (ROS) and accumulation of misfolded α-synuclein (αSYN) are recurrent features in a majority of Parkinson’s disease cases. Building on the brain energy metabolism framework in Chap. 2, a mathematical model is constructed of these key neurochemical players and their interactions. A computer implementation of the model is used to simulate and visualize the dynamics of ROS, αSYN, and their nonlinear interaction wit... 查看全文

429   Comparison of rapid thermal processing and furnace processing for quarter-micrometer CMOS Comparison of rapid thermal processing and furnace processing for quarter-micrometer CMOS Badih El-Kareh    0 A comparison was made between rapid-thermal processing and furnace processing with respect to gate oxidation, polysilicon sidewall oxidation, and junction activation anneal. NMOS and PMOS structures with N + polysilicon gates, 6.5 nm gate oxide, and 70 nm source/drain junction depths were processed in parallel, using one-mask FET test structures to define MOSFETs with channel lengths down to 0.18 micrometers . Good NMOS device characteristics and low junction leakage were observed for all exper... 查看全文

430   Influence of packaging on the shelf life of frozen foods II. Baltic herring fillets Influence of packaging on the shelf life of frozen foods II. Baltic herring fillets Selim Kermasha and Maurice Metche    2007 查看全文

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