gebhart/patrepeval huggingface dataset:
Low Voltage Buffered Bandgap Reference (2007)

We propose a new bandgap reference topology for supply voltages as low as one diode drop (~0.8V). In conventional low-voltage references, supply voltage is limited by the generated reference voltage. Also, the proposed topology generates the reference voltage at the output of the feedback amplifier. This eliminates the need for an additional output buffer, otherwise required in conventional topologies. With the bandgap core biased from the reference voltage, the new topology is also suitable for a low-voltage shunt reference. We fabricated a 1V, 0.35mV/degC reference occupying 0.013mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> in a 90nm CMOS process
Growth and Characterization of Magnetooptic Garnet Films with Planar Uniaxial Anisotropy (2005)

Abstract For Abstract see ChemInform Abstract in Full Text.
Zero-Crossing Current Detection for Modular and Robust Dynamic Wireless Power Transfer (2020)

A novel control scheme applicable to in-road inductive wireless charging pads in a dynamic system is presented. Primary inverter current sensing allows the primary pad to detect an approaching secondary pad. Zero-crossing detection of the same current allows the primary to synchronize to the secondary, functioning as a "synchronous inverter". Necessary measures to ensure stable operation of the design are discussed. The design is validated through simulation, which demonstrated no loss of efficiency or power capacity with the novel synchronization and detection scheme.
Automatic detection of patient-ventilator asynchrony by spectral analysis of airway flow (2011)

Spectral analysis of airway flow provides an automatic, non-invasive assessment of ventilator asynchrony at fixed short intervals. This method can be adapted to ventilator systems as a clinical monitor of asynchrony.
A novel soft switching ZVS, sinusoidal input boundary current mode control of 6-switch three phase 2-level boost rectifier for active and active + reactive power generation (2018)

Recent advancements in semiconductor technology and the commercial availability of low on resistance and parasitic capacitors wide bandgap devices (SiC & GaN) has led power electronics systems to achieve efficiency as high as 99% for three phase boost PFC rectifier systems. However, this high efficiency is attainable only for rectifiers running at low switching frequencies (<;70 kHz) as these converters operate in hard switching continuous conduction mode (CCM). Turn-on losses become dominant for high switching frequency operation with CCM. The trend for increasing switching frequency is driven by the fact that high switching frequency operation leads to significant reduction in filter size but high switching frequency operation is only feasible with soft switching ZVS turn-on control. Critical conduction mode (CRM) with ZVS turn-on has considerably high efficiency for single phase boost PFC at very high switching frequencies (>1 MHz). However, conventional boundary conduction mode (BCM)/CRM for three phase rectifier systems, does not generate sinusoidal average input current. A Zero Voltage Switching (ZVS) BCM control with sinusoidal input current for three phase 2-level converter is presented in this paper. This paper covers unity power factor (u.p.f.) operation, active + reactive power and also purely reactive power generation cases. The control scheme is presented in detail and ZVS turn-on operation is also discussed. The simulation and experimental results are discussed in the end. For a 1.2 KW converter, power density achieved by >500 kHz switching frequency operation is ~80 W/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> and with soft switching, 99 % efficiency is maintained.
Novel 3-Oxa Lipoxin A<sub>4</sub> Analogues with Enhanced Chemical and Metabolic Stability Have Anti-inflammatory Activity in Vivo (2004)

Lipoxin A(4) (LXA(4)) is a structurally and functionally distinct natural product called an eicosanoid, which displays immunomodulatory and anti-inflammatory activity but is rapidly metabolized to inactive catabolites in vivo. A previously described analogue of LXA(4), methyl (5R,6R,7E,9E,11Z,13E,15S)-16-(4-fluorophenoxy)-5,6,15-trihydroxy-7,9,11,13-hexadecatetraenoate (2, ATLa), was shown to have a poor pharmacokinetic profile after both oral and intravenous administration, as well as sensitivity to acid and light. The chemical stability of the corresponding E,E,E-trien-11-yne analogue, 3, was improved over 2 without loss of efficacy in the mouse air pouch model of inflammation. Careful analysis of the plasma samples from the pharmacokinetic assays for both 2 and 3 identified a previously undetected metabolite, which is consistent with metabolism by beta-oxidation. The formation of the oxidative metabolites was eliminated with the corresponding 3-oxatetraene, 4, and the 3-oxatrien-11-yne, 5, analogues of 2. Evaluation of 3-oxa analogues 4 and 5 in calcium ionophore-induced acute skin inflammation model demonstrated similar topical potency and efficacy compared to 2. The 3-oxatrien-11-yne analogue, 5, is equipotent to 2 in an animal model of inflammation but has enhanced metabolic and chemical stability and a greatly improved pharmacokinetic profile.
Noninvasive detection of coronary artery disease using parametric spectral analysis methods (1990)

The detection of coronary artery disease by noninvasive analysis of isolated diastolic heart sounds is considered. It is based on identifying features associated with turbulent blood flow in partially occluded coronary arteries. The application of two types of parametric spectral analysis-autoregressive methods and eigenvector methods-to identify the additional signal components is discussed. Results obtained with one eigenvector method, (the MUSIC method) for spectra obtained from an angioplasty patient and results obtained with the autoregressive model in a comparison study of ten diseased and five normal patients are presented and discussed.
The application of adaptive digital filter for the internal state estimation of batteries (2003)

We proposed an innovative estimation method for internal states of a rechargeable battery. First, we described the charge-discharge characteristic of a battery as a linear parameter varying model, and applied an adaptive-digital-filter theory to it. Finally, we estimated the state of charge and the usable input/output power accurately, which are necessary to fully utilize the battery power on the vehicle. The relationship between the current and terminal voltage of a storage battery is described using a linear parameter varying model. That made it possible to reduce the problem of recursively estimating the model parameters with an adaptive digital filter.
Optimizing Software-Directed Instruction Replication for GPU Error Detection (2018)

Application execution on safety-critical and high-performance computer systems must be resilient to transient errors. As GPUs become more pervasive in such systems, they must supplement ECC/parity for major storage structures with reliability techniques that cover more of the GPU hardware logic. Instruction duplication has been explored for CPU resilience; however, it has never been studied in the context of GPUs, and it is unclear whether the performance and design choices it presents make it a feasible GPU solution. This paper describes a practical methodology to employ instruction duplication for GPUs and identifies implementation challenges that can incur high overheads (69% on average). It explores GPU-specific software optimizations that trade fine-grained recoverability for performance. It also proposes simple ISA extensions with limited hardware changes and area costs to further improve performance, cutting the runtime overheads by more than half to an average of 30%.
Frugal storage for cloud file systems (2012)

Enterprises are moving their IT infrastructure to cloud service providers with the goal of saving costs and simplifying management overhead. One of the critical services for any enterprise is its file system, where users require real-time access to files. Cloud service providers provide several building blocks such as Amazon EBS, or Azure Cache, each with very different pricing structures that differ on the basis of storage, access and bandwidth costs. Moving an entire file system to the cloud using such services is not cost-optimal if we rely on only one of these services. In this paper, we propose FCFS, a storage solution that drastically reduces the cost of operating a file system in the cloud. Our solution integrates multiple storage services and dynamically adapts the storage volume sizes of each service to provide a cost-efficient solution with provable performance bounds. Using real-world large scale data sets spanning a variety of work loads from an enterprise data center, we show that FCFS can reduce file storage and access costs in current cloud services by a factor of two or more, while allowing users to utilize the benefits of the various cloud storage services.
Motion-compensated highly scalable video compression using an adaptive 3D wavelet transform based on lifting (2002)

This paper proposes a new framework for the construction of motion compensated wavelet transforms, with application to efficient highly scalable video compression. Motion compensated transform techniques, as distinct from motion compensated predictive coding, represent a key tool in the development of highly scalable video compression algorithms. The proposed framework overcomes a variety of limitations exhibited by existing approaches. This new method overcomes the failure of frame warping techniques to preserve perfect reconstruction when tracking complex scene motion. It also overcomes some of the limitations of block displacement methods. Specifically, the lifting framework allows the transform to exploit inter-frame redundancy without any dependence on the model selected for estimating and representing motion. A preliminary implementation of the proposed approach was tested in the context of a scalable video compression system, yielding PSNR performance competitive with other results reported in the literature.
A critical overview on spacecraft charging mitigation methods (2003)

Interactions between hazardous space plasmas and spacecraft surfaces often result in spacecraft charging. Spacecraft charging may disturb the scientific measurements onboard, affect communications, control, and operations of spacecraft, and may be harmful to the health of the electronics on the spacecraft. Several mitigation methods have been proposed or tested in recent years. This paper presents a critical overview on all of the mitigation methods known to date: 1) passive methods using sharp spikes and high secondary emission coefficient surface materials and 2) active methods using controlled emissions of electrons, ions, plasmas, neutral gas, and polar molecules. Paradoxically, emission of low-energy positive ions from a highly negatively charged spacecraft can reduce the charging level, because the ions tend to return and may generate secondary electrons which then escape. We discuss the advantages and disadvantages of each of the methods and illustrate the ideas by means of examples of results obtained on SCATHA and DSCS satellites. Finally, mitigation of deep dielectric charging is briefly discussed.
Ion Beam Bending of Nano Scale Materials in Free Space (2006)

We report an ion beam bending process to control the shape of nanometer scale materials. 5–30 keV gallium ion beam was found to plastically bend diverse materials having nanometer scale geometries of free-standing tube, spike and plank, along the ion beam so that their free end is directed toward the ion source, in vacuum space free of any applied electric or magnetic field. With the process, we could create a bent tip for scanning force microscope and hooks for nano-manipulation, out of straight spikes carved with nano-scale dimensions.
A study on the architecture of the in-vehicle wireless sensor network system (2013)

In this paper, we study on the architecture of the in-vehicle wireless sensor network system. We present the system architecture which will be applied to the convenience/safety-related services by using wireless sensor networks applied to the in-vehicle system. This system architecture aims to compose an efficient vehicle system and reduce the increased vehicle weight by the in-vehicle sensors and ECUs(Electronics Control Unit). We describe the system architecture about a vehicular basestation and a vehicular wireless sensor node which is installable randomly to the in-vehicle electronic components.
A new locus on chromosome 19 linked with late-onset Alzheimer's disease (2001)

Alzheimer's disease (AD) is a complex neurodegenerative disorder, characterized by cognitive decline and distinctive neuropathology. APOE 4 and APOCI A on chromosome 19 are risk factors for late-onset disease. Using large extended families with multiple siblings affected, we have identified several microsatellite markers which are also linked with late- onset Alzheimer's disease. These microsatellites are distal from the apolipoprotein cluster on chromosome 19. It is likely that multiple genes will be involved with late-onset disease, either as risk factors or as causative agents.
Ebolavirus Glycoprotein GP Masks both Its Own Epitopes and the Presence of Cellular Surface Proteins (2009)

ABSTRACT Ebolavirus (EBOV) is the etiological agent of a severe hemorrhagic fever with a high mortality rate. The spike glycoprotein (GP) is believed to be one of the major determinants of virus pathogenicity. In this study, we demonstrated the molecular mechanism responsible for the downregulation of surface markers caused by EBOV GP expression. We showed that expression of mature GP on the plasma membrane results in the masking of cellular surface proteins, including major histocompatibility complex class I. Overexpression of GP also results in the masking of certain antigenic epitopes on GP itself, causing an illusory effect of disappearance from the plasma membrane.
Laser Ultrasonic Inspection of Subsurface Defects in Flip-Chips (2005)

Flip‐chips play an important role in electronic packaging; allowing for increased packaging density while maintaining or improving the reliability of the circuits. In a flip‐chip, the silicon die is placed upside down on the circuit board and the input/output (I/O) connections are made through solder balls on the underside of the die. Epoxy under‐fill is typically required to enhance bonding of the flip‐chip to the substrate as well as to protect the solder balls from thermal cycling and mechanical vibrations. We report on the use of laser based ultrasonic microscopy for the non‐contact and nondestructive inspection of flip‐chips. A pulsed laser source is used for ultrasonic wave generation at the chip surface, and the reflected acoustic waves from the chip/substrate interface are measured using a Michelson interferometer. A two‐dimensional scanning system has been implemented to perform raster scans over flip‐chips, and images are produced allowing for the detection and sizing of subsurface inhomogeneities such as voids in the epoxy under‐fill. Results indicate that laser based ultrasonic microscopy provides an attractive alternative to conventional immersion scanning acoustic microscopy for the inspection of electronic packaging.
Tuftsin and Tuftsin Analogs: Biology, Synthesis and Design Theory (1996)

Abstract: We have reviewed aspects of the medicinal chemistry of Tuftsin. Biochemical and clinical aspects including physioogy and assays are briefly accounted for. Structure-activity relationships found in the literature provide a link between the synthetic/design strategies and the biological response. Directed rational design and synthetic techniques are reviewed for both tuftsin and its analogs.
Topological transformation approaches to optimizing TCAM-based packet classification systems (2009)

Several range reencoding schemes have been proposed to mitigate the effect of range expansion and the limitations of small capacity, large power consumption, and high heat generation of TCAM-based packet classification systems. However, they all disregard the semantics of classifiers and therefore miss significant opportunities for space compression.
Secure ADS-B framework “ADS-Bsec” (2016)

In this paper, we leverage previous work on securing Automatic Dependent Surveillance Broadcast (ADS-B) to propose a secure ADS-B framework that substantially enhances the original safety and security solutions. The enhancements are obtained by feeding real flight data along with malicious data at the secure ADS-B sender and observing the outcome at the secure ADS-B receiver that we developed as part of our research on ADS-Bsec. To evaluate our ideas, we built a trajectory predictor module based on Base of Aircraft Data (BADA) and, together with well-defined departure and arrival airports, generated a synthetic, yet realistic aircraft data set. The experiments focus on describing how our system reacts to known ADS-B attacks, and the results obtained so far and presented in this paper are consistent with our expectations of enhancements in both safety and security of ADS-B operations.
Static noise analysis with noise windows (2003)

As processing technology scales down to the nanometer regime, capacitive crosstalk is having an increasingly adverse effect on circuit functionality, leading to increasing number of chip failures. In this paper, we propose mapping the static crosstalk functional noise problem into the well understood static timing problem. The key differences between static noise and static timing analyses, namely the injection of noise, accurate noise window propagation and register sensitive window computation are the contributions of this work. We demonstrate the effectiveness of this approach in two industrial designs by achieving 5X reduction in functional noise failures over noise propagation without considering timing of the composite noise pulse envelope, and 30X reduction in functional noise failures over net based noise failure metrics.
Fluid-filled engine mount device (1986)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Toshihiko Kakimoto, Keizo Konishi, Teruo Yonehama, Takao Yamamoto; Fluid‐filled engine mount device. J. Acoust. Soc. Am. 1 May 1986; 79 (5): 1642. https://doi.org/10.1121/1.393287 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAcoustical Society of AmericaThe Journal of the Acoustical Society of America Search Advanced Search |Citation Search
Isolation and Characterization of the Tsetse Thrombin Inhibitor: A Potent Antithrombotic Peptide from the Saliva of Glossina morsitans morsitans (1996)

"Isolation and Characterization of the Tsetse Thrombin Inhibitor: A Potent Antithrombotic Peptide from the Saliva of Glossina morsitans morsitans" published on May 1996 by The American Society of Tropical Medicine and Hygiene.
Use of a Live Attenuated Varicella Vaccine to Boost Varicella‐Specific Immune Responses in Seropositive People 55 Years of Age and Older: Duration of Booster Effect (1998)

Varicella-zoster virus (VZV)-specific T cell immunity was measured in 130 persons > or = 55 years of age 6 years after they received a live attenuated VZV vaccine. Circulating T cells, which proliferated in vitro in response to VZV antigen, were enumerated (VZV responder cell frequency assay). Six years after the booster vaccination, the VZV-responding cell frequency (1/61,000 circulating cells) was still significantly (P < .05) improved over the baseline measurements (1/70,000) and appears to have diminished the expected decline in frequency as these vaccinees aged (to 1/86,000). Ten herpes-zoster--like clinical events were recorded. Although the frequency of these events, approximately 1/100 patient-years, is within the expected range of such events for this age cohort, the number of lesions was small, there was very little pain, and there was no postherpetic neuralgia. These results support the development of a vaccine to prevent or attenuate herpes zoster.
PRODUCTION OF CONCRETE CONTAINING FLY ASH FOR STRUCTURAL APPLICATIONS. INTERIM REPORT (1986)

Structural applications of concrete containing fly ash have been limited mainly to high strength concrete in the past. This trend is primarily due to the lack of information available to the resident engineer concerning curing conditions, setting times, strength characteristics and durability of normal strength fly ash concrete. This study addresses some of the major concerns of resident highway engineers on concrete containing fly ash for structural concrete in highway applications. This report summarizes the experimental observations and conclusions from a research program investigating the properties of both fresh and hardened structural concrete containing fly ash. Tests were performed to establish guidelines for the selection of materials and trial mix design procedures for producing quality concrete containing fly ash. The study investigated freeze-thaw resistance, flexural and compressive strength characteristics, mixing conditions and procedures and curing conditions such as temperature, humidity, curing methods and rate of strength gain. Types A and B fly ashes were used in this study as a replacement for 0, 15, 25, and 35% Type I portland cement by weight. In addition, Type IP cement containing 20% Type A fly ash was used. The results of this study show that concrete containing fly ash can be designed and proportioned to meet present Texas SDHPT specifications for structural applications. In addition, this study reveals that an optimum mix design for concrete containing fly ash is both technically and economically advantageous to the Texas SDHPT. This report provides the resident engineer with recommendations to ensure the production of quality concrete containing fly ash for structural applications.
Nanoantenna-enabled midwave infrared focal plane arrays (2012)

We demonstrate the effects of integrating a nanoantenna to a midwave infrared (MWIR) focal plane array (FPA). We model an antenna-coupled photodetector with a nanoantenna fabricated in close proximity to the active material of a photodetector. This proximity allows us to take advantage of the concentrated plasmonic fields of the nanoantenna. The role of the nanoantenna is to convert free-space plane waves into surface plasmons bound to a patterned metal surface. These plasmonic fields are concentrated in a small volume near the metal surface. Field concentration allows for a thinner layer of absorbing material to be used in the photodetector design and promises improvements in cutoff wavelength and dark current (higher operating temperature). While the nanoantenna concept may be applied to any active photodetector material, we chose to integrate the nanoantenna with an InAsSb photodiode. The geometry of the nanoantenna-coupled detector is optimized to give maximal carrier generation in the active region of the photodiode, and fabrication processes must be altered to accommodate the nanoantenna structure. The intensity profiles and the carrier generation rates in the photodetector active layers are determined by finite element method simulations, and iteration between optical nanoantenna simulation and detector modeling is used to optimize the device structure.