gebhart/patrepeval huggingface dataset:
On mitigating acoustic feedback in hearing aids with frequency warping by all-pass networks (2019)

Acoustic feedback due to the acoustic coupling between the microphones and loudspeakers at high gains can cause the hearing aid system to become unstable. This instability results in brief “howling” artifacts as magnitude and phase conditions fulfill the Nyquist stability criterion (NSC). We present a novel approach that uses all-pass networks to perform nonlinear spectral mapping that we call “freping,” a portmanteau for frequency warping. In this contribution, we focus on spectral manipulations on top of adaptive feedback cancellation (AFC) to break NSC for improved feedback reduction. A real-time, multichannel realization is presented, which has individual control of the warping degree in each frequency band. Freping helps mitigate the NSC and thus leads to improved feedback control, while distortions due to freping are fairly benign based on informal subjective assessments. Our current findings indicate that improvements in terms of the perceptual evaluation of speech quality (PESQ) and the hearing-aid speech quality index (HASQI) can be achieved with freping for a basic AFC (PESQ: 2.56 to 3.52 and HASQI: 0.65 to 0.78) at medium amplification; and an advanced AFC (PESQ: 2.75 to 3.17 and HASQI: 0.66 to 0.73) at high amplification. Additional results will be included in the final presentation.
DICOM transmission of simultaneous stereoscopic images of the optic nerve in patients with glaucoma (2007)

We evaluated the Digital Imaging and Communications in Medicine (DICOM) standard for the transmission of stereoscopic images of the optic nerve. Digital optic nerve images were obtained from patients with glaucoma. Fifteen simultaneous stereo images from consecutive patients were analysed independently twice, in random order, by two glaucoma specialists to establish baseline values of vertical and horizontal cup-to-disc (CDV and CDH) ratios and image quality (1 = worst, 5 = best). Images were transmitted to a distant location and returned to the sending site using DICOM standards in both directions. The received images were reassessed again by the two glaucoma specialists. The image file size slightly increased for all received images (mean 2545 kByte) in comparison with the transmitted images (mean 2460 kByte). The mean baseline values for CDV, CDH and quality score were 0.66, 0.59 and 3.9, respectively. The corresponding mean values for the received images were 0.66, 0.62 and 3.73, respectively. The differences between transmitted and received images were not significant. Clinical interpretation of digital stereoscopic images of glaucomatous optic nerves appears to be unaffected by DICOM capture and transmission.
Lincoln Laboratory's 3D Circuit Integration Technology (2008)

This chapter contains sections titled: Introduction Lincoln Laboratory's Wafer-Scale 3D Circuit Integration Technology Transferred FDSOI Transistor and Device Properties 3D Circuit and Device Results Summary References
Factors effecting dental composite wearin vitro (1997)

The wear of posterior dental composite restorations takes place through a complex combination of wear mechanisms. To isolate and measure the contribution of the different tribological phenomena in a controlled manner, an oral wear simulator was employed. Results previously reported demonstrated the simulator's ability to form strong correlations with clinical results for both abrasion and attrition wear. These results were generated with the device configured to mimic masticatory dynamics, specifically employing a human enamel stylus, physiologic load levels, and a foodlike slurry for a third body. In this study the slurry was replaced with water to examine the role of the third body in producing abrasion. The third body was found to reduce wear for most materials. In a separate test the enamel stylus tip was replaced with steatite, a semiporous ceramic with wear characteristics similar to enamel when opposing dental composite. The use of a steatite antagonist increased abrasion for the larger particle filled materials. The adhesive wear mechanism was found to be a contributing factor in dental composite wear.
Progressive Preclinical Interstitial Lung Disease in Rheumatoid Arthritis (2008)

Asymptomatic preclinical ILD, which is detectable by HRCT, may be prevalent and progressive among patients having RA. Cigarette smoking seems to be associated with preclinical ILD in patients having RA, and treatment using methotrexate may be a risk factor for progression of preclinical ILD. Quantification of alveolar proteins indicates that potential pathogenic mechanisms seem to differ in patients having RA-ILD and symptomatic RAPF.
Growth Mechanism of Ru Films Prepared by Chemical Vapor Deposition Using Bis(ethylcyclopentadienyl)ruthenium Precursor (2001)

Ruthenium thin films were prepared by chemical vapor deposition using a liquid bis(ethylcyclopentadienyl)ruthenium precursor in an oxidizing atmosphere, and their growth mechanism is explained in terms of oxygen ratio. Before growth, a long incubation time exists and is shortened by increasing growth temperature and oxygen ratio. Following the incubation time, the Ru film grows linearly with increasing deposition time, and the rate-determining process dominating the precursor decomposition changes according to ratio. At a low ratio of 1.3%, at which film thickness increases in proportion to logarithmic ratio of thermal decomposition with an activation energy of 1.9 eV dominates the growth process. On the other hand, at a high ratio of 25%, at which sufficient oxygen gas is supplied and film thickness does not depend on ratio, oxidative decomposition becomes dominant and activation energy decreases to 0.4 eV. We propose that the reaction-limited process results from the oxygen-supply-limited process, which is based on dissociative chemisorption of oxygen on the growing Ru film surface. © 2001 The Electrochemical Society. All rights reserved.
Bronchoscopic Approach to Lung Volume Reduction Using a Valve Device (2003)

Bronchoscopic lung volume reduction has been used in patients with advanced emphysema. We describe the experimental use of an endobronchial valve device to facilitate collapse of the segmental bronchi and effect nonsurgical lung volume reduction. Nine sheep underwent implantation of valve devices into lung segments using flexible bronchoscopy. After 1 week to 6 months, the animals underwent right thoracotomy and gross and histopathologic examination. Of the 40 valve devices placed in segmental bronchi, all but 3 were intact and well seated in the bronchial lumen. Gross collapse was seen distal to 34 devices (34 of 40, 85%). Atelectasis on histopathology was evident distal to 36 devices (36 of 40, 90%); of these, 6 had evidence of pneumonia and 1 had a focal abscess (7 of 36, 19%). Four additional segments had limited foci of inflammation (4 of 36, 11%). Lung volume reduction, as evidenced by atelectasis, can be achieved using bronchoscopically placed valve devices. In this model, device use was associated with pneumonia or abscess in 19% of cases and mild inflammatory changes in 11%. Potential advantages of a bronchoscopic valve device are that it permits bronchial drainage and continued decompression of the distal bronchus. The clinical efficacy of this approach awaits the results of an ongoing clinical trial.
ChemInform Abstract: Total Synthesis of Brevetoxin A. Part 1. First Generation Strategy and Construction of BCD Ring System. (1999)

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.
Characterization of [3H][2-D-penicillamine, 5-D-penicillamine]-enkephalin binding to delta opiate receptors in the rat brain and neuroblastoma--glioma hybrid cell line (NG 108-15). (1985)

Specific binding properties of the tritium-labeled delta opiate receptor agonist [3H][2-D-penicillamine, 5-D-penicillamine]enkephalin [( 3H][D-Pen2, D-Pen5]enkephalin) were characterized in the rat brain and in a mouse neuroblastoma-rat glioma hybrid cell line (NG 108-15). Saturation isotherms of [3H][D-Pen2, D-Pen5]enkephalin binding to rat brain and NG 108-15 membranes gave apparent Kd values of 1-6 nM. These values are in good agreement with the Kd value obtained from the kinetic studies. The Bmax value in NG 108-15 membranes was 235.3 fmol/mg of protein. An apparent regional distribution of [3H][D-Pen2, D-Pen5]enkephalin binding was observed in the rat brain. A number of enkephalin analogues inhibited [3H][D-Pen2, D-Pen5]enkephalin binding with high affinity (IC50 values of 0.5-5.0 nM) in both NG 108-15 and rat brain membranes. However, putative mu receptor-selective ligands such as morphine, [D-Ala2, MePhe4, Gly5-ol]enkephalin, [MePhe3, D-Pro4]morphiceptin, and naloxone were less effective inhibitors of [3H][D-Pen2, D-Pen5]enkephalin binding in both systems tested. These data suggest that [3H][D-Pen2, D-Pen5]enkephalin is a potent and selective ligand for the delta opioid receptor.
Statistical Measurement of the Combined Effect of PMD and PDL Using a 10-Gb/s Recirculating Loop Testbed (2001)

The combined effect of PMD and PDL is investigated statistically using a 10-Gb/s, 8×82-km, recirculating fiber-loop testbed. As average PDL varies from 1.0 to 2.1 dB with a fixed average PMD of 18 ps, the power penalty at 2% probability increases from 2.5 to 4.3 dB.
Traffic-Based Study of Femtocell Access Policy Impacts on HSPA Service Quality (2009)

Home NodeBs (HNB)s can be operated in a fully-closed manner (in which only user equipment (UEs) within a closed subscriber group (CSG) are permitted to connect), a fully-open manner (in which access can potentially be granted to any nearby mobile station), or somewhere in between. An additional option is "hybrid" HNBs, in which a portion of the HNB resources are reserved for exclusive use of the CSG, and the remaining resources are allocated in an open manner. The relationship between access policy and the performance of the overall network is one of the most interesting open questions related to HNB deployment. The present paper explores the relationship between HNB access and quality of service with specific attention to the differences between HSDPA, HSUPA, and the relative mix of traffic types.
Estimation of Grain Size and Composition in Steel Using Laser UltraSonics Simulations at Different Temperatures (2023)

The applicability of laser ultrasonics for the determination of grain size and phase composition in steels under different temperatures was investigated. This was done by obtaining the velocity and attenuation of propagating ultrasonic waves in a simulated steel medium. Samples of ferrite and austenite with varying microstructures were modelled and simulated with the finite difference method, as were samples with varying ratios of austenite and martensite. The temperature of the medium was taken into account as an essential parameter, since both velocity and attenuation are temperature dependent. Results of the velocity and attenuation analysis showed that the use of the wave propagation velocity is not feasible for determination of grain size or phase composition due to a high sensitivity to temperature and sample thickness. The frequency-dependent ultrasonic wave attenuation was less sensitive to the variation of temperature and sample thickness. It can be concluded that accurate knowledge of the temperature is essential for obtaining a correct grain size or phase ratio estimation: a temperature accuracy of 100 °C yields a grain size accuracy in the order of a micrometer using the attenuation. Similarly, a temperature accuracy of 70 °C leads to a phase ratio estimation accuracy of 10%.
A multi-society-based intelligent association discovery and selection for ambient intelligence environments (2010)

This article presents a novel intelligent embedded agent approach for reducing the number of associations and interconnections between various agents operating within ad hoc multiagent societies of an Ambient Intelligent Environment (AIE) in order to reduce the processing latency and overheads. The main goal of the proposed fuzzy-based intelligent embedded agents (F-IAS) includes learning the overall network configuration and adapting to the system functionality to personalize themselves to the user needs based on monitoring the user in a lifelong nonintrusive mode. In addition, the F-IAS agents aim to reduce the agent interconnections to the most relevant set of agents in order to reduce the processing overheads and thus implicitly improving the system overall efficiency. We employ embedded ambassador agents, namely embassadors, which are designated F-IAS agents utilized with additional novel characteristics to not only act as a gateway filtering the number of messages multicast across societies but also discover, recommend, and establish associations between agents residing in separate societies. In order to validate the efficiency of the proposed methods for multiagent and society-based intelligent association discovery and learning of F-IAS agents/embassadors we will present two sets of unique experiments. The first experiment describes the obtained results carried out within the intelligent Dormitory (iDorm) which is a real-world testbed for AIE research. Here we specifically demonstrate the utilization of the F-IAS agents and discuss that by optimizing the set of associations the agents increase efficiency and performance. The second set of experiments is based on emulating an iDorm-like large-scale multi-society-based AIE environment. The results illustrate how embassadors discover strongly correlated agent pairs and cause them to form associations so that relevant agents of separate societies can start interacting with each other.
HB^+^+: a Lightweight Authentication Protocol Secure against Some Attacks (2006)

At Crypto05, Juels and Weis introduce HB+, an enhancement of the Hopper and Blum (HB) authentication protocol. This protocol HB+ is proven secure against active attacks, though preserving HBs advantages: mainly, requiring so few resources to run that it can be implemented on an RFID tag. However, in a wider adversarial model, Gilbert, Robshaw and Sibert exhibit a very effective attack against HB+. We here show how a modification of the HB+ protocol thwarts Gilbert et als attack. The resulting protocol, HB++, remains a good choice for RFID authentication.
Development and Validation of a Continuous In Vitro System Reproducing Some Biotic and Abiotic Factors of the Veal Calf Intestine (2010)

Following the January 2006 European ban of antibiotics used as growth promoters in the veal calf industry, new feed additives are needed in order to maintain animal health and growth performance. As an alternative to in vivo experiments in the testing of such additives, an in vitro system modeling the intestinal ecosystem of the veal calf was developed. Stabilization of the main cultured microbial groups and their metabolic activity were tracked in an in vitro continuous fermentor operated under anaerobiosis, at pH 6.5, and at a temperature of 38.5 degrees C and supplied with one of three different nutritive media (M1, M2, or M3). These media mainly differed in their concentrations of simple and complex carbohydrates and in their lipid sources. In vitro microbial levels and fermentative metabolite concentrations were compared to in vivo data, and the biochemical composition of the nutritive media was compared to that of the veal calf intestinal content. All three nutritive media were able to stabilize anaerobic and facultative anaerobic microflora, lactate-utilizing bacteria, bifidobacteria, lactobacilli, enterococci, and Bacteroides fragilis group bacteria at levels close to in vivo values. The microbiota was metabolically active, with high concentrations of lactate, ammonia, and short-chain fatty acids found in the fermentative medium. Comparison with in vivo data indicated that M3 outperformed M1 and M2 in simulating the conditions encountered in the veal calf intestine. This in vitro system would be useful in the prescreening of new feed additives by studying their effect on the intestinal microbiota levels and fermentative metabolite production.
A Highly Flexible Yet >300 mAh cm−3 Energy Density Lithium‐Ion Battery Assembled with the Cathode of a Redox‐Active Polyether Binder (2020)

A highly flexible cathode for lithium-ion batteries is made with lithium cobalt oxide, single-walled carbon nanotubes, and a redox-active radical polymer binder. The polyether backbone of the polymer is beneficial to withstand rapid bending over 104 times. The high energy density of the hybrid cathode (> 300 mAh cm−3) contributes to the realization of a 0.5 mm thick flexible battery. More details can be found in article number 1901159 by Kenichi Oyaizu, Hiroyuki Nishide, and co-workers.
Andrographolide Inhibits IFN-γ and IL-2 Cytokine Production and Protects Against Cell Apoptosis (2005)

Andrographolide is the main labdane diterpene present in Andrographis paniculata. Two lines of evidence report immunostimulant and anti-inflammatory properties for andrographolide in different models. Using murine T-cells in vitro we demonstrated that andrographolide and to a lesser extent, 14-deoxyandrographolide (14-DAP), reduced significantly, in a dose-dependent manner, the IFN-gamma production induced by concanavaline A (CON-A), with an IC50 of 1.7 +/- 0.07 microM and 35.8 +/- 0.50 microM, respectively. Andrographolide, but not 14-DAP, inhibited partially the IL-2 production induced by CON-A. Andrographolide at doses of 5 and 10 microM reduced the extracellular-signal-regulated protein kinase (ERK1/2) phosphorylation induced by CON-A, whereas 14-DAP only reduced ERK1 and partially the ERK2 phosphorylation. The inhibition of ERK1/2 phosphorylation was associated to a decrease in the IFN-gamma production, due that UO126, a specific ERK1/2 inhibitor, also reduced the IFN-gamma production in murine T-cells induced by CON-A. Additionally, andrographolide and to a lesser extent 14-DAP, at doses of 50 microM and 100 microM, respectively, reduced the apoptosis induced by hydrocortisone and PMA in thymocytes, which was associated to a decrease in caspase-3 like activity. We conclude that both diterpenic labdanes isolated from A. paniculata can exert potent immunosuppressant effects without affecting the viability of the cells.
Early outcomes of sequentially cross-linked thin polyethylene liners with large diameter femoral heads in total hip arthroplasty. (2011)

The overall survivorship of the study cohort was 100%, compared to a 96% survivorship in the comparison group (two failures due to infection). The mean Harris hip scores in the thin polyethylene cohort improved from 43 points (range, 10 to 67 points) pre-operatively to 91 points (range, 69 to 100 points) postoperatively. Upon radiographic review, no malalignment, radiolucencies, or polyethylene fracture was noted in the study cohort. The mean volumetric wear rate was 0.4122 mm³/year (range, 0.2311 to 0.7310 mm³/year), and the mean linear wear rate was 0.0004 mm/year (range, 0.0002 to 0.0007 mm/year) for the thin polyethylene group. The mean volumetric wear was 0.8839 mm³ (range, 0.4621 to 1.5839 mm³) for this cohort. Excellent clinical and radiographic outcomes were found for patients treated with thin, sequentially cross-linked and annealed polyethylene bearings utilized in total hip arthroplasty, with a nominal thickness of 3.8 millimeters. We have not seen any failures with thin polyethylene liners that have undergone this manufacturing process, which is in contradistinction to results of previously reported thin polyethylene liners. Wear rates were lower than other bearing surfaces at similar periods.
Cathodoluminescence and electron microscopy of red quantum dots used for display applications (2015)

Abstract Cathodoluminescent imaging of the visible light emitted from quantum dots is reported. The shape and uniformity of individual particles is observed in the scanning transmission electron microscope image, and the image of the particles created from their visible light collected simultaneously is shown. Visible light images of the 13 nm sized particles are reported for clusters of particles. The emission spectrum collected from small clusters of quantum dots is also reported.
Integrated Gradient Index Luneburg Lens for Robust Fiber-to-Chip Coupling (2012)

We demonstrate a high contrast, low loss, gradient index lens for robust fiber-to-chip coupling of silicon waveguides. We experimentally show increased alignment tolerance in comparison to a conventional inverse taper.
DISK: Learning local features with policy gradient (2020)

Local feature frameworks are difficult to learn in an end-to-end fashion, due to the discreteness inherent to the selection and matching of sparse keypoints. We introduce DISK (DIScrete Keypoints), a novel method that overcomes these obstacles by leveraging principles from Reinforcement Learning (RL), optimizing end-to-end for a high number of correct feature matches. Our simple yet expressive probabilistic model lets us keep the training and inference regimes close, while maintaining good enough convergence properties to reliably train from scratch. Our features can be extracted very densely while remaining discriminative, challenging commonly held assumptions about what constitutes a good keypoint, as showcased in Fig. 1, and deliver state-of-the-art results on three public benchmarks.
Title to be Announced (2016)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text S. G. Johnson, "Title to be Announced," in Frontiers in Optics 2016, OSA Technical Digest (online) (Optica Publishing Group, 2016), paper LTu1H.3. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
ChemInform Abstract: Synthesis of LD‐Hepp‐ and KDO‐Containing Di‐ and Tetrasaccharide Derivatives of Neisseria meningitidis Inner‐Core Region via Iodonium Ion Promoted Glycosidations. (1992)

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.
Study of nano-imprint for sub-100-nm patterning by using SU-8 3000NIL resist (2006)

SU-8 (Kayaku Microchem Co., Ltd.) provides well-defined resist profiles with high aspect ratios, and is also suitable for use as a permanent resist. SU-8 has been widely used for many years in the MEMS (Micro Electro Mechanical System), IC package (bump, insulator, encapsulation), micro fluid (inkjet, micro reactor, biochips), and optical device (waveguide, optical switch) fields. SU-8 is a chemically amplified negative resist based on epoxy resin. This resist generates a strong acid during exposure, and PEB (Post Exposure Baking) induces the crosslinking reaction of the resin with the acid working as a catalyst to insolubilize the resist. In our study, we sought to investigate the potential application of SU-8 3000NIL, the most commonly used resist for the MEMS process, to imprint lithography. The results we obtained indicate that SU-8 3000NIL can indeed be applied to imprint lithography after optimizing process conditions for imprinting.