gebhart/patrepeval huggingface dataset:
Generalized Self-Interference Model for Full-Duplex Multicarrier Transceivers (2019)

In the modeling of full duplex (FD) transceivers using multicarrier modulations, it is usually assumed that the intercarrier interference of the coupling path is negligible. Therefore, the system can be analyzed on a subcarrier basis, because the model reduces to a set of orthogonal flat channels. However, for more general FD transceivers, or when hardware components introduce nonlinear distortion, the orthogonality is lost and a more rigorous model is needed. In this paper, we introduce a model for the coupling interference of FD systems, which allows the uplink and the downlink to have different time and frequency offsets, and different parameters such as the number of subcarriers and symbol length. In addition, we present a linear approximation for the nonlinear coupling based on a generalization of the Bussgang's theorem, for the case of transmitters with nonuniform power allocation. We validate the proposed model with measurements and show numerically that it improves the accuracy of the signal to interference plus noise ratio expression, and the formulation of optimization problems. Therefore, the proposed model paves the way for a more realistic performance analysis and the derivation of more accurate power allocation strategies than is possible with the classic model.
ChemInform Abstract: Initial Structure—Activity Relationship of a Novel Class of Nonpeptidyl GnRH Receptor Antagonists: 2‐Arylindoles. (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Subspace methods for blind estimation of time-varying FIR channels (1997)

Novel linear algorithms are proposed in this paper for estimating time-varying FIR systems, without resorting to higher order statistics. The proposed methods are applicable to systems where each time-varying tap coefficient can be described (with respect to time) as a linear combination of a finite number of basis functions. Examples of such channels include almost periodically varying ones (Fourier series description) or channels locally modeled by a truncated Taylor series or by a wavelet expansion. It is shown that the estimation of the expansion parameters is equivalent to estimating the second-order parameters of an unobservable FIR single-input-many-output (SIMO) process, which are directly computed (under some assumptions) from the observation data. By exploiting this equivalence, a number of different blind subspace methods are applicable, which have been originally developed in the context of time-invariant SIMO systems. Identifiability issues are investigated, and some illustrative simulations are presented.
Generation of chaos with simple sets of semiconductor devices (2002)

This paper reviews our studies on the observation of chaos in thyristors and related devices, analysis that revealed the mechanism of chaos generation, simplification of the device to a capacitor-transistor pair, and its integration and application to neural computing.
Corticosteroid-Sparing Effects of Filgotinib in Moderately to Severely Active Ulcerative Colitis: Data from the Phase 2b/3 SELECTION Study (2022)

Filgotinib 200 mg demonstrated corticosteroid-sparing effects and maintained corticosteroid-free clinical remission in patients with UC. MAIC results should be interpreted cautiously given the large CIs and differences in study design and patient populations. [ClinicalTrials.gov: NCT02914522].
A Log-linearized Arterial Viscoelastic Index and Its Application to Carotid Ultrasonography (2012)

This paper proposes a method for qualitatively estimating the mechanical properties of arterial walls on a beat-to-beat basis through noninvasive measurement of continuous arterial pressure and arterial diameter. First, in order to describe the nonlinear relationships between arterial pressure waveforms and arterial diameter waveforms as well as the viscoelastic characteristics of arteries, we developed a second-order nonlinear model (called the log-linearized arterial viscoelastic model) to estimate the viscoelasticity of arterial walls. Next, to verify the validity of the proposed method, carotid viscoelastic indices were estimated based on arterial pressure waveforms measured using an ultrasonic device, and on arterial diameter waveforms measured using a noninvasive sphygmomanometer. The results showed that the proposed model could be used to accurately approximate the mechanical properties of arterial walls, and it was confirmed that the viscoelastic indices of arterial walls were proportional to age (stiffness: r=0.870; viscosity: r=0.668; and modified viscosity: r=-0.720). It was therefore concluded that the proposed model can be used to qualitatively evaluate arterial viscoelastic properties based on noninvasive measurement of arterial pressure and arterial diameter.
Outcomes after curative hepatectomy in patients with non-B non-C hepatocellular carcinoma and hepatitis B virus hepatocellular carcinoma from non-cirrhotic liver (2014)

For patients with non-cirrhotic liver, clinical outcomes for NBNC-HCC were comparable to those for HBV-HCC after curative hepatectomy.
Robust Automated Step Extraction From Time-Series Contact Force Data Using the PDShoe (2014)

This paper presents a method of stride identification, extraction, and analysis of data sets of time-series contact force data for ambulating subjects both with and without Parkinson's disease (PD). This method has been made robust with the use of seeded K-Means clustering, fast Fourier transformation (FFT) spectral analysis, and minimum window size rejection. These methods combine to produce well selected strides of active walking data. We are able to calculate quality of walking measures of stride duration, stance duration (as percent of gait cycle - %GC), swing duration (%GC), time to maximum heel force (%GC), time to maximum toe force (%GC), time spent in heel contact (%GC), and time spent in toe contact (%GC).
Methods, systems and apparatus for adjusting modulation index to improve linearity of phase voltage commands (2023)

Embodiments of the present invention relate to methods, systems and apparatus for controlling operation of a multi-phase machine in a motor drive system. The disclosed embodiments provide a mechanism for adjusting modulation index of voltage commands to improve linearity of the voltage commands.
Parametric Harmonic Generation as a Probe of Unconstrained Spin Magnetization Precession in the Shallow Barrier Limit (2016)

We study the parametric excitation of high orders of magnetization precession in ultrathin films having perpendicular magnetic anisotropy. We observe that for a given driving field amplitude the harmonic generation can be increased by lowering the barrier with the application of an in-plane magnetic field in the manner of the Smit-Beljers effect. In this effect, the magnetic stiffness is reduced not by lowering the magnitude of the magnetic field upon which the spins precess, but rather by effectively releasing the field's "anchoring" point. This results in a shallow energy barrier where the electrons' spin is locally unconstrained. While the observation is unveiled in the form of nonlinear high harmonic generation, we believe that the physics whereby the barrier is suppressed by an external magnetic field may apply to other phenomena associated with ultrathin films. In these cases, such unconstrained motion may serve as a sensitive probe of the torques associated with proximate spin currents. Moreover, our approach may be used as a model system for the study of phase transitions in the field of nonlinear dynamics.
Change in Characteristics of Titania Nanoparticles during the Process of Dispersion, Agglomeration and Re-Dispersion with a Dual-Axis Beads-Mill (2013)

従来にない低エネルギーによりナノ粒子凝集体の連続分散を可能とした新しいタイプの2軸式ビーズミルを用いて，平均径15 nmの針状チタニアナノ粒子の分散および凝集特性を調べた．既往の研究において，ビーズ径およびミル回転速度を変えて最適なエネルギーで分散すると，動的光散乱法による平均粒度およびX線回折パターンによる結晶性の評価により，チタニアナノ粒子凝集体はダメージを受けることなく，一次粒子まで分散できることが明らかとなった．本研究では，さらに分散および凝集したナノ粒子のTEM像観察，小角X線散乱，ζ-電位，BET比表面積および分光特性を調べて，ナノ粒子凝集体の分散特性を明確にした．特に，TEM像の観察より，最適分散条件では，元の針状構造を保って分散されるが，高エネルギー分散条件では，針状粒子が10 nm程度の大きさに破砕されて再凝集体となっていることが確認された．また，この再凝集体に分散剤を添加して適切な条件で分散を行うと，10 nm程度の大きさに再分散し，透明性の高い分散スラリーが形成されるが，これらの再凝集–再分散過程での粒子特性の変化について考察した．
An interface for eddy current displacement sensors with 15-bit resolution and 20 MHz excitation (2010)

This paper presents a high-performance interface for eddy current displacement sensors, intended for use in IC fabrication equipment. The interface consists of a low-power front-end oscillator and a synchronous demodulator. With an excitation frequency of 20 MHz, it enables the use of targets with only a few tens of μm thickness. A ratio-metric measurement approach is applied to suppress the oscillator's noise contribution. The demodulator is auto-zeroed to suppress its 1/f noise. The interface has been realized in a 0.35μm BiCMOS technology and consumes about 18 mW. Measurement results demonstrate a linearity of 0.4%, and a resolution of 15.3 bits (75 nm on a 3mm range) within a 1 kHz signal bandwidth.
Laminar and Turbulent Natural Convection in the Annulus Between Horizontal Concentric Cylinders (1982)

Numerical solutions are presented for the steady-state, two-dimensional natural convection in the annulus between two horizontal concentric cylinders which are held at different constant temperatures. Solutions for the laminar case are obtained up to Rayleigh number (based on gap width, L) of 105. Turbulent flow results are presented for the Rayleigh number range of 106–107. the k-ε turbulence model has been applied to obtain the results. Buoyancy effects on the turbulence structure are also accounted for. The results for both the laminar and turbulent cases are in good agreement with available experimental data and other solutions in the literature. All results presented are for the outer cylinder diameter to inner cylinder diameter ratio of 2.6.
The integration of OSI network management and TCP/IP Internet management using SNMP (2002)

Network management refers to monitoring and controlling network elements. There are two different prevalent communication protocols used for network management, simple network management protocol (SNMP) proposed by IAB and common management information protocol (CMIP) by ISO/OSI. In this paper, we propose an efficient approach for the integration of OSI network management and TCP/IP Internet management using SNMP. We present an architecture and techniques to menage TCP/IP Internet using OSI's common management information services (CMIS) and system management functions (SMFs). We compare services provided by SNMP with those of OSI management. The features of management information models used by SNMP and OSI management are also comparatively analyzed. Software architecture and algorithms which are necessary for the provision of management application services using SNMP are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
<title>Mesh-restorable networks with complete dual failure restorability and with selectively enhanced dual-failure restorability properties</title> (2002)

We consider extensions of the most common mesh-restorable network capacity design formulation that enhance the dual-failure restorability of the designs. A significant finding is that while design for complete dual-failure restorability can require triple the spare capacity, dual failure restorability can be provided for a fairly large set of priority paths with little or no more spare capacity than required for single-failure restorability. As a reference case we first study the capacity needs under complete dual-failure restorability. This shows extremely high capacity penalties to support 100% dual-failure restorability. A second design model allows a user to specify a total capacity budget limit and obtain the highest average dual-failure restorability possible for that investment limit. A third design strategy supports multiple-restorability service class definitions at minimum total cost. Restorability can range from best-efforts-only on any failure to an assurance of complete single and dual-failure restorability, on a per-demand basis. This work shows how to economically support an added service class in the upward quality direction: assured dual failure survivability. This lets a network operator tailor the investment in capacity to provide ultra-high availability on a selective basis, while avoiding the very high investment required for complete dual-failure restorability for all.
Retrospective Comparative Study for Effectiveness, Procedural Time and Radiation Exposure Between Primary Catheter Aspiration and Mechanical Thrombectomy with Stent Retriever in Ischemic Stroke (2020)

Mathkour, Mansour H MD; Gouveia, Edna; Scullen, Tyler MD; Huang, Brendan; Gulotta, Paul; Vidal, Gabriel; Milburn, James; Valle, Edison MD Author Information
ChemInform Abstract: PRACTICAL TOTAL SYNTHESIS OF (.+‐.)‐AKLAVINONE AND TOTAL SYNTHESIS OF AKLAVIN (1981)

Abstract Diels‐ Alder‐Reaktion der Edukte (I) und (II) und Oxidation des prim. gebildeten Adduktes geben das Furan‐Derivat (III), dessen Ozonolyse zu dem Aldehyd (IVa) führt, daraus erhält man durch Acetalisierung und Reaktion mit 1‐(Trimethylsi1yl)‐butanon‐(2) das geschützte Aldol (IVb), das beim Umsetzen mit K 2 CO 3 /Me‐OH die Cyclisierungsprodukte (Va)‐(Vc) liefert.
Electrospinning core‐shell nanofibers for interfacial toughening and self‐healing of carbon‐fiber/epoxy composites (2012)

Abstract This article reports a novel hybrid multiscale carbon‐fiber/epoxy composite reinforced with self‐healing core‐shell nanofibers at interfaces. The ultrathin self‐healing fibers were fabricated by means of coelectrospinning, in which liquid dicyclopentadiene (DCPD) as the healing agent was enwrapped into polyacrylonitrile (PAN) to form core‐shell DCPD/PAN nanofibers. These core‐shell nanofibers were incorporated at interfaces of neighboring carbon‐fiber fabrics prior to resin infusion and formed into ultrathin self‐healing interlayers after resin infusion and curing. The core‐shell DCPD/PAN fibers are expected to function to self‐repair the interfacial damages in composite laminates, e.g., delamination. Wet layup, followed by vacuum‐assisted resin transfer molding (VARTM) technique, was used to process the proof‐of‐concept hybrid multiscale self‐healing composite. Three‐point bending test was utilized to evaluate the self‐healing effect of the core‐shell nanofibers on the flexural stiffness of the composite laminate after predamage failure. Experimental results indicate that the flexural stiffness of such novel self‐healing composite after predamage failure can be completely recovered by the self‐healing nanofiber interlayers. Scanning electron microscope (SEM) was utilized for fractographical analysis of the failed samples. SEM micrographs clearly evidenced the release of healing agent at laminate interfaces and the toughening and self‐healing mechanisms of the core‐shell nanofibers. This study expects a family of novel high‐strength, lightweight structural polymer composites with self‐healing function for potential use in aerospace and aeronautical structures, sports utilities, etc. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Immunomodulatory function of major histocompatibility complexderived peptides (1996)

Recent advances with regard to the structure and function of the major histocompatibility molecules have given rise to a better understanding of T cell receptor interaction with the major histocompatibility complex plus peptide complex on the surface of antigen-presenting cells, and have highlighted the pivotal role of the peptide in determining the subsequent T cell response. There has therefore been increased interest in the use of synthetic peptides to alter T cell responses to foreign antigens. The purpose of this review is to highlight the recent studies which demonstrate the potential immunomodulatory functions of peptides derived from major histocompatibility complex molecules.
Measurement of Molecular-Alignment Relaxation Rate in NH3Using Non-Lorentzian Laser-Induced Saturation Resonances (1977)

A general technique is presented in which narrow non-Lorentzian laser-induced resonances are used to study molecular reorientation. The experiments, which study the ${\ensuremath{\nu}}_{2}asQ(8, 7)$ N${\mathrm{H}}_{3}$ transition, yield a value of 6 \ifmmode\pm\else\textpm\fi{} 1 MHz/Torr for the excited-state alignment relaxation rate, 50% larger than the corresponding population relaxation rate.
A screening technique for anticipating network instabilities in AC-DC systems using sequence impedances obtained by frequency scanning (2012)

In this paper, we present further applications of the time-domain simulation based frequency scanning technique which has been proposed in the earlier literature. The behavior of the complete HVDC system is modelled as the closed loop action of two independent systems (AC system and DC system). The separately obtained frequency scan results of these independent systems are used to get the frequency response of the complete HVDC system. A heuristic screening method, based on the evaluation of frequency dependent positive or negative sequence resistance seen at the converter terminals, is utilized to anticipate unstable AC-DC interaction. We present a methodology to incorporate frequency domain criteria into the cost function of a simulation based optimization procedure so as to obtain a robust controller which avoids adverse interaction. (6 pages)
Transforming growth factor beta induces IgA production and acts additively with interleukin 5 for IgA production. (1989)

Effects of transforming growth factor beta (TGF-beta) on IgA production by LPS-stimulated B cells have been studied. TGF-beta itself could augment polyclonal IgA production in concomitant inhibition of polyclonal IgM and IgG1 production. Furthermore, TGF-beta and IL-5 additively augmented IgA production. TGF-beta exerted its activity early in the culture (by 2 d in a 5-d culture) and IL-5 was required late in the culture. Surface IgA- (sIgA-) B cells responded to TGF-beta for the development of IgA-secreting cells. By contrast, sIgA+ B cells, but not sIgA- B cells, responded to IL-5 for IgA production. These results suggest that TGF-beta has a differential role in the induction of IgA production from IL-5 on murine-activated B cells.
On the selection of adaptive modulation and coding modes over OFDM (2004)

In this paper we address the problem of how best selecting the smallest set of transmission modes (i.e. modulation and channel code formats) to be employed in adaptive modulation and coding (AMC) schemes for OFDM. In fact, by decreasing the number of allowable modes, the complexity of the ACM scheme is greatly reduced. The method makes use of an optimum throughput maximization algorithm for the bit and power allocation. We start with a large set of possible transmission modes. Then, for a given channel, we iterate the loading algorithm with mode sets having successive removal of the mode which yields the smallest contribution to the overall throughput. By using this method in a Rayleigh fading channel, we are able to show that in the test case of the HIPERLAN/2 modes, up to five modes out of seven can be removed with a very small impact on the average achievable throughput.
Designing of a Field Shaper for Electromagnetic Crimping of Multi-Tube-Tube and Multi-Tube-Rod in Single Discharge Energy (2022)

Abstract This paper designed a unique field shaper, which can crimp multiple end tubes in single discharge energy. This design will surely provide an advantage of crimping different diameter tube-tube-tube and tube-tube-rod in single discharge energy. The design of the field shaper not only shows the feasibility of the multi-tube-tube and multi-tube-rod crimping for different electrical and fluid transfer applications but also explores the idea that multi-joining is also possible if carried out at the correct machine and tool parameters. The feasibility of the new process was proven by doing numerical analysis using the electromagnetic (EM) module of the ls-dyna software. Discussions on variables like current density, magnetic field, effective stress, impact velocity, and slit change are carried out. The work was validated using the tube deformation, the cross-sectional analysis of the crimped samples, and the impact velocity of the flyer tube that was measured using the PDV system. Post-processing of the samples was also carried out like a pull-out test, which justifies the numerical data interpreted. Some new important observation of the pressure waves generated during the process is discussed. Those intense pressure waves still exist after the peak current value is achieved during the current first cycle. As predicted, it may also be one of the reasons affecting the lifecycle of the field shaper. The design of the field shaper will provide a unique method for carrying out the multiple samples crimping in the single discharge energy and enhancing the production rate.
Chapter 1. History of Sustainable Bio-based Polymers (2011)

Bio-based polymers have played an important role in the development of today's plastics industry. Plastics derived from renewable resources have been around for millennia; they have come and gone, and are slowly making a comeback. After almost disappearing, today, engineering viable bio-based materials may contribute to a more sustainable future economy and advance the field of biomedical engineering. The biodegradability of bio-based plastics, formerly perceived as a problem, is seen by many today as an asset, since it offers an outlet for overflowing solid waste streams. Polylactic acid, soy protein-based plastics, starches and many more are promising renewable, biodegradable materials. Although agriculture-based plastics have been around for centuries, they were largely forgotten after the advent of synthetic, petroleum- based polymers. This chapter reviews the history of the development of what was once a thriving industry, tying it to today's technological and societal needs. Starting with the use of silk as suture material for over 100 years, this chapter revisits the literature left to us by early twentieth century engineers who made protein-based plastics from casein and soy protein on an industrial scale. With advances in tissue engineering and cell culture, biocompatible and biodegradable natural polymers have gained great importance, such as collagen and chitosan. Major progress in genetics and molecular biology has allowed industrial growth of polymers produced from bacteria for a great array of applications. In recent years, there has been a resurgence of interest in green industry and biopolymers; for this reason the history of bio-based plastics can be a starting point to its resurgence.