gebhart/patrepeval huggingface dataset:
Mid-infrared quantum cascade lasers combs for spectroscopy (2012)

The quantum cascade laser (QCL)[1] has demonstrated operation over an extremely wide wavelength range extending from the mid-infrared at 2.9μm to the Terahertz at 360μm. In addition, quantum cascade lasers operating in the mid-infrared have now demonstrated extremely high powers (>1W c.w.) with increasingly high wallplug efficiencies (>25%)[2, 3]. As shown in Fig. 1, in a new development, ultra low dissipation devices have been fabricated, operating with powers below 1W at room temperature.
Real Time Gabor-Domain Optical Coherence Microscopy for 3D Imaging. (2016)

Fast, robust, nondestructive 3D imaging is needed for the characterization of microscopic tissue structures across various clinical applications. A custom microelectromechanical system (MEMS)-based 2D scanner was developed to achieve, together with a multi-level GPU architecture, 55 kHz fast-axis A-scan acquisition in a Gabor-domain optical coherence microscopy (GD-OCM) custom instrument. GD-OCM yields high-definition micrometer-class volumetric images. A dynamic depth of focusing capability through a bio-inspired liquid lens-based microscope design, as in whales' eyes, was developed to enable the high definition instrument throughout a large field of view of 1 mm3 volume of imaging. Developing this technology is prime to enable integration within the workflow of clinical environments. Imaging at an invariant resolution of 2 μm has been achieved throughout a volume of 1 × 1 × 0.6 mm3, acquired in less than 2 minutes. Volumetric scans of human skin in vivo and an excised human cornea are presented.
Modeling Simulink Diagrams Using Input/Output Extended Finite Automata (2009)

We develop a modeling approach for Simulink diagrams. Simulink is a commercial graphical representation tool for representing and simulating dynamical systems. We propose a recursive approach for modeling a class of Simulink diagrams as input/output-extended finite automata (I/O-EFA). A model of a Simulink diagram can be used for further analysis such as test generation and formal verification. The modeling approach is sound and complete: The input-output behavior of an I/O-EFA model, as defined in terms of a step-trajectory, preserves the input-output behavior of the corresponding Simulink diagram at each sample time.
Low Nonlinearity Yb-Doped Fluorosilicate Optical Fiber With Ultra-Flat Absorption Spectrum (2017)

We report on new Yb-doped fluorosilicate optical fibers with reduced strength of Brillouin, Raman, and thermal Rayleigh scattering. Yb3+ absorption spectra strongly resemble borate glasses, with ultra-flat absorption in the 940nm region.
Therapeutic Effects of Short Cyclic and Combined Epitope Peptides in a Long-Term Model of Graves' Disease and Orbitopathy (2019)

In summary, novel cyclic peptides mitigate many clinical findings in a mouse model of established Graves' disease and orbitopathy, and may therefore provide an additional therapeutic option compared to existing drugs or interventions.
Poly(diol fumarates); A new class of tunable antimicrobial polymers (2016)

Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, make your event a Frontiers Event!
Novel Process for Surface Modification of Polyimide (1990)

Surface modification (texturing) of polyimide through a metal clustering and migration process is reported. This process involves heat treatment of polyimide coated with a thin copper layer. Subsequent metallization of the textured surface leads to improved adhesion due to mechanical anchoring. Adhesion values of 7-10 lbs/in (ambient) and 4-6 lbs/in (after solder float) have been obtained.
Augmenting hand animation with three-dimensional secondary motion (2010)

Secondary motion, or the motion of objects in response to that of the primary character, is widely used to amplify the audience's response to the character's motion and to provide a connection to the environment. These three-dimensional (3D) effects are largely passive and tend to be time consuming to animate by hand, yet most are very effectively simulated in current animation software. In this paper, we present a technique for augmenting hand-drawn animation of human characters with 3D physical effects to create secondary motion. In particular, we create animations in which hand-drawn characters interact with cloth and clothing, dynamically simulated balls and particles, and a simple fluid simulation. The driving points or volumes for the secondary motion are tracked in two dimensions, reconstructed into three dimensions, and used to drive and collide with the simulated objects. Our technique employs user interaction that can be reasonably integrated into the traditional animation pipeline of drawing, cleanup, inbetweening, and coloring.
Assessing the genetic variation of Ty-1 and Ty-3 alleles conferring resistance to tomato yellow leaf curl virus in a broad tomato germplasm (2015)

Tomato yellow leaf curl virus (TYLCV) hampers tomato production worldwide. Our previous studies have focussed on mapping and ultimately cloning of the TYLCV resistance genes <i>Ty</i>-<i>1</i> and <i>Ty</i>-<i>3</i>. Both genes are derived from <i>Solanum chilense</i> and were shown to be allelic. They code for an RNA-dependent RNA polymerase (RDR) belonging to the RDRγ type defined by a DFDGD catalytic domain. In this study, we first fine-mapped the TYLCV resistance in <i>S. chilense</i> LA1932, LA1960 and LA1971. Results showed that chromosomal intervals of the causal genes in these TYLCV-resistant accessions overlap and cover the region where <i>Ty</i>-<i>1/Ty</i>-<i>3</i> is located. Further, virus-induced gene silencing was used to silence <i>Ty</i>-<i>1</i>/<i>Ty</i>-<i>3</i> in tomato lines carrying TYLCV resistance introgressed from <i>S. chilense</i> LA1932, LA1938 and LA1971. Results showed that silencing <i>Ty</i>-<i>1/Ty</i>-<i>3</i> compromised the resistance in lines derived from <i>S. chilense</i> LA1932 and LA1938. The LA1971-derived material remained resistant upon silencing <i>Ty</i>-<i>1/Ty</i>-<i>3</i>. Further, we studied the allelic variation of the <i>Ty</i>-<i>1/Ty</i>-<i>3</i> gene by examining cDNA sequences from nine <i>S. chilense</i>-derived lines/accessions and more than 80 tomato cultivars, landraces and accessions of related wild species. The DFDGD catalytic domain of the <i>Ty</i>-<i>1/Ty</i>-<i>3</i> gene is conserved among all tomato lines and species analysed. In addition, the 12 base pair insertion at the 5-prime part of the <i>Ty</i>-<i>1/Ty</i>-<i>3</i> gene was found not to be specific for the TYLCV resistance allele. However, compared with the susceptible <i>ty</i>-<i>1</i> allele, the <i>Ty</i>-<i>1/Ty</i>-<i>3</i> allele is characterized by three specific amino acids shared by seven TYLCV-resistant <i>S. chilense</i> accessions or derived lines. Thus, <i>Ty</i>-<i>1/Ty</i>-<i>3</i>-specific markers can be developed based on these polymorphisms. Elevated transcript levels were observed for all tested <i>S. chilense</i><i>RDR</i> alleles (both <i>Ty</i>-<i>1</i> and <i>ty</i>-<i>1</i> alleles), demonstrating that elevated expression level is not a good selection criterion for a functional <i>Ty</i>-<i>1/Ty</i>-<i>3</i> allele.
Phase Modulators Based on High Mobility Ambipolar ReSe2 Field-Effect Transistors (2018)

We fabricated ambipolar field-effect transistors (FETs) from multi-layered triclinic ReSe<sub>2</sub>, mechanically exfoliated onto a SiO<sub>2</sub> layer grown on p-doped Si. In contrast to previous reports on thin layers (~2 to 3 layers), we extract field-effect carrier mobilities in excess of 10<sup>2</sup> cm<sup>2</sup>/Vs at room temperature in crystals with nearly ~10 atomic layers. These thicker FETs also show nearly zero threshold gate voltage for conduction and high ON to OFF current ratios when compared to the FETs built from thinner layers. We also demonstrate that it is possible to utilize this ambipolarity to fabricate logical elements or digital synthesizers. For instance, we demonstrate that one can produce simple, gate-voltage tunable phase modulators with the ability to shift the phase of the input signal by either 90° or nearly 180°. Given that it is possible to engineer these same elements with improved architectures, for example on h-BN in order to decrease the threshold gate voltage and increase the carrier mobilities, it is possible to improve their characteristics in order to engineer ultra-thin layered logic elements based on ReSe<sub>2</sub>.
Novel optical modulation scheme for 16-QAM format with quadrant differential encoding (2009)

We propose a novel modulation scheme for the generation of 16-QAM optical signals. The proposed scheme employs only two-level electrical driving signals and implements a quadrant differential encoding rule with minimum precoding.
Anti-islanding protection in three-phase converters using grid synchronization small-signal stability (2012)

This paper presents the islanding detection algorithms for three-phase (3Φ) grid-interface converters based on the grid synchronization small-signal stability. To study the grid synchronization behavior at the islanded condition, a low-frequency small-signal phase-locked-loop (PLL) model is proposed by considering the converter interaction with the system impedances. Many of the frequency-related behaviors can be well explained and the crucial system parameters which impact the PLL stability are quantified by the proposed model as well. Based on the model, two islanding detection algorithms based on the small-signal stability theory are proposed to effectively detect the islanding event under the worst loading condition. The proposed algorithms feature a small impact to the converter system operation as well as an easy implementation. Multi-disciplinenary comparison and the detailed design procedures are given.
Fiberguide to metal hermetic seal (1978)

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 W. W. Benson, D. R. Mackenzie, T. C. Rich, and I. Camlibel, "Fiberguide to metal hermetic seal," Appl. Opt. 17, 2271-2272 (1978) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Exploring new approaches to the treatment of asthma: Potentialroles for lipoxins and aspirin-triggered lipid mediators (2003)

The prevalence of asthma continues to increase and its optimal treatment remains a challenge. During asthma, leukotrienes and prostaglandins are generated in human airways, leading to bronchoconstriction and airway inflammation. Several pharmaceutical agents are currently available to inhibit the formation or action of these lipid mediators, but asthmatic individuals have heterogeneous and often incomplete therapeutic responses. Lipoxins are a class of eicosanoids distinct from leukotrienes and prostaglandins. Temporal analyses in experimental models of acute inflammation reveal early coordinate appearance of leukotrienes and prostaglandins followed by delayed lipoxin biosynthesis concurrent with resolution of the inflammatory response. Of interest, lipoxins display unique antiinflammatory actions and, in an experimental model of asthma, administration of a stable analog of 15-epi-lipoxin A(4) markedly decreased both airway hyperresponsiveness and inflammation. In addition, overexpression of human lipoxin A(4) (LXA(4)) receptors in murine leukocytes also protected animals from the development of airway inflammation. Inhibition of airway hyperresponsiveness and allergic airway inflammation with a LXA(4) stable analog highlights a unique counterregulatory profile for LXA(4) and its leukocyte receptor in airway responses and suggests that lipoxins and related pathways present novel multipronged therapeutic approaches for consideration in airway inflammation and human asthma.
<title>Hierarchical video summarization</title> (1998)

We address the problem of key-frame summarization of vide in the absence of any a priori information about its content. This is a common problem that is encountered in home videos. We propose a hierarchical key-frame summarization algorithm where a coarse-to-fine key-frame summary is generated. A hierarchical key-frame summary facilitates multi-level browsing where the user can quickly discover the content of the video by accessing its coarsest but most compact summary and then view a desired segment of the video with increasingly more detail. At the finest level, the summary is generated on the basis of color features of video frames, using an extension of a recently proposed key-frame extraction algorithm. The finest level key-frames are recursively clustered using a novel pairwise K-means clustering approach with temporal consecutiveness constraint. We also address summarization of MPEG-2 compressed video without fully decoding the bitstream. We also propose efficient mechanisms that facilitate decoding the video when the hierarchical summary is utilized in browsing and playback of video segments starting at selected key-frames.
Excellent mechanical properties of carbon fiber semi-aligned electrospun carbon nanofiber hybrid polymer composites (2016)

The excellent mechanical properties of carbon fiber fabric hybrid polymer composites is achieved by integrating continuous semi-aligned carbon nanofiber layers in the interlaminar region between carbon fiber fabric plies.
Providing secure services for a virtual infrastructure (2009)

Virtualization brings exibility to the data center and enables separations allowing for better security properties. For these security properties to be fully utilized, virtual machines need to be able to connect to secure services such as networking and storage. This paper addresses the problems associated with managing the cryptographic keys upon which such services rely by ensuring that keys remain within the trusted computing base. Here we describe a general architecture for managing keys tied to the underlying virtualized systems, with a specific example given for secure storage.
Language‐modeling kernel based approach for information retrieval (2007)

Abstract In this presentation, we propose a novel integrated information retrieval approach that provides a unified solution for two challenging problems in the field of information retrieval. The first problem is how to build an optimal vector space corresponding to users' different information needs when applying the vector space model. The second one is how to smoothly incorporate the advantages of machine learning techniques into the language modeling approach. To solve these problems, we designed the language‐modeling kernel function, which has all the modeling powers provided by language modeling techniques. In addition, for each information need, this kernel function automatically determines an optimal vector space, for which a discriminative learning machine, such as the support vector machine, can be applied to find an optimal decision boundary between relevant and nonrelevant documents. Large‐scale experiments on standard test‐beds show that our approach makes significant improvements over other state‐of‐the‐art information retrieval methods.
Ultrasonic Tissue Characterization of Normal and Ischemic Myocardium (1990)

Cardiac ultrasonic tissue characterization is designed to use the alterations in acoustic signals from the myocardium to differentiate normal from ischemic or infarcted tissue due to their characteristic backscatter attenuation. Various approaches such as use of a gray scale, color display, or quantitative image analysis have been used for tissue characterization, but all depend on subjective assessments and are not necessarily reproducible. The most promising method has been the use of "raw" radiofrequency signals and measure changes in the ultrasonic attenuation with an index of backscatter to distinguish normal from abnormal myocardium called "integrated backscatter" (IB). Various studies have demonstrated the changes in the ultrasonic backscatter with ischemia or infarction. In this review we summarize our experience with a research prototype instrument in tissue characterization and differentiation of normal, ischemic, infarcted, and post ischemic reperfused myocardium in anesthetized open chest dogs. Currently we are investigating the role of ultrasonic tissue characterization to estimate infarct size and plan to apply these observations to patients in order to detect viable myocardium and quantitate infarct size.
The role of ammonia in promoting ammonia borane synthesis (2016)

Ammonia promotes the synthesis of pure ammonia borane (AB) in excellent yields from sodium borohydride and ammonium sulfate in tetrahydrofuran under ambient conditions. An examination of the influence of added ammonia reveals that it is incorporated into the product AB, contrary to its perceived function as a catalyst or a co-solvent. Mechanistic studies point to a nucleophilic attack by ammonia on ammonium borohydride with concurrent dehydrogenation to yield AB.
A novel automatic neonatal seizure detection system (2005)

A novel neonatal seizure detection system is proposed including work in the areas of independent component analysis, feature extraction, probability and classification networks. The system comprises of a preprocessing stage to reduce the effect of EEG artifacts and incorporate multichannel analysis and data reduction. A feature extraction stage examines the EEG using techniques from various signal processing approaches. A probability estimator compares current and past features to emphasise changes in the state of the EEG. Finally, a classification stage uses the results from the probability estimator to make a decision as to whether the EEG is non-seizure or seizure. Results show promising performance, detecting 45 of 46 seizures in the test data with low false detection rates.
An Information Theoretic, Microfluidic-Based Single Cell Analysis Permits Identification of Subpopulations among Putatively Homogeneous Stem Cells (2011)

An incomplete understanding of the nature of heterogeneity within stem cell populations remains a major impediment to the development of clinically effective cell-based therapies. Transcriptional events within a single cell are inherently stochastic and can produce tremendous variability, even among genetically identical cells. It remains unclear how mammalian cellular systems overcome this intrinsic noisiness of gene expression to produce consequential variations in function, and what impact this has on the biologic and clinical relevance of highly 'purified' cell subgroups. To address these questions, we have developed a novel method combining microfluidic-based single cell analysis and information theory to characterize and predict transcriptional programs across hundreds of individual cells. Using this technique, we demonstrate that multiple subpopulations exist within a well-studied and putatively homogeneous stem cell population, murine long-term hematopoietic stem cells (LT-HSCs). These subgroups are defined by nonrandom patterns that are distinguishable from noise and are consistent with known functional properties of these cells. We anticipate that this analytic framework can also be applied to other cell types to elucidate the relationship between transcriptional and phenotypic variation.
Dyeing Natural Fibers with Disperse Dyes in Supercritical Carbon Dioxide (1994)

Because of the success of dyeing synthetic fibers with disperse dyes in supercritical carbon dioxide, we have investigated the possibility of dyeing natural fibers with this technique. Experiments are presented for wool and cotton dyeings after a special pretreatment.
Electrochemical Synthesis of Heteroaromatic Polymers : New Compounds and Novel Substrates (1985)

Abstract The electrochemical deposition of polypyrrole on carbon fibers surfaces is described with the resulting morphologies and mechanical properties. The first in a family of heteroaromatic conducting polymers has been obtained from thieno [3,2-b] pyrrole.
Applying Pragmatics Principles for Interaction with Visual Analytics (2017)

Interactive visual data analysis is most productive when users can focus on answering the questions they have about their data, rather than focusing on how to operate the interface to the analysis tool. One viable approach to engaging users in interactive conversations with their data is a natural language interface to visualizations. These interfaces have the potential to be both more expressive and more accessible than other interaction paradigms. We explore how principles from language pragmatics can be applied to the flow of visual analytical conversations, using natural language as an input modality. We evaluate the effectiveness of pragmatics support in our system Evizeon, and present design considerations for conversation interfaces to visual analytics tools.
Optical Coherent Receiver With a Switchable Electrical Dispersion Compensator for 10 Gb/s DPSK Transmission up to 300 km of SSMF in Metro Optical Networks (2009)

The purpose of this paper is to demonstrate the potential of an electrical signal processing technique to mitigate the effect of intersymbol interference in metro optical networks, using optical coherent detection. Intersymbol interference in fiber-optic systems can severely degrade the system performance and subsequently limit both the maximum transmission distance and data rate. The main sources of intersymbol interference include chromatic dispersion (CD) and polarization mode dispersion (PMD). The typical reach for 10 Gb/s metro optical systems is on the order of 300 km. To bridge this distance either with or without repeaters, we demonstrate the potential use of 10 Gb/s differential phase-shift keying (DPSK) modulation format in conjunction with an optical coherent receiver with a built-in switchable electrical dispersion compensator. The overall performance of the optical coherent receiver is compared with that of the corresponding direct detection (DD) receiver based on Mach-Zehnder delay interferometer. The optical signal-to-noise (OSNR) required to operate the optical coherent receiver at the enhanced forward error correction (EFEC) threshold of 2.1 X 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> is 6 dB/0.1 nm resolution bandwidth. The optical coherent receiver outperforms in absolute required OSNR by 0.5 dB at the EFEC threshold when compared to a DD receiver. A four position switchable CD compensator compensates up to ?5100 ps/nm of CD, using the method of heterodyne detection. The optical coherent receiver has a first-order PMD tolerance of 36.2 ps for 1 dB OSNR penalty. The utility of our optical coherent receiver is demonstrated by doing transmission experiments over 304 km of standard single-mode fiber (SSMF) in both repeatered (multiple spans) and repeaterless (single span) to measure the self-phase modulation (SPM) tolerance of 10 Gb/s nonreturn-to-zero (NRZ)-DPSK. The measured SPM tolerance of NRZ-DPSK over 304 km of SSMF in three spans of ~100 km each is +8.8 dBm fiber launch power for 1.5 dB OSNR penalty. In addition, the best Q factor of ~12 dB is obtained for the fiber launch power of +18 dBm over single repeaterless span of 304 km of SSMF, which gives ~3 dB of system margin at the second generation EFEC threshold of 9.1 dB.