gebhart/patrepeval huggingface dataset:
Small core ultra high numerical aperture fibers with very high nonlinearity (2008)

We have demonstrated ultra high NA fibers of core diameters down to 1.2μm, low confinement loss and very high nonlinearity. Efficient supercontinuum generation is demonstrated in a 2μm core fiber. These fibers can also be spliced to conventional fibers with low loss.
Querying and mining graph databases (2007)

Graphs have become popular for modeling complex data in a variety of domains: chemical compounds, protein structures, protein interaction networks, database schemas, social networks, Web, XML, multimedia, etc. As a result, graph querying and mining has become important for information retrieval and analysis. However, many challenges arise in efficient processing of graph querying and mining. How to address the subgraph isomorphism problem which is NP-hard? How to measure the similarity between graphs? How to index a large collection of graphs for fast retrieval? How to optimize query processing over large-scale graphs? How to define and discover significant graph patterns in a graph database? 
In this dissertation, I demonstrate that the above questions can be well addressed with both theoretical soundness and practical efficiency. I first consider queries over a large collection of small graphs. For subgraph queries, I develop an approximation algorithm for the subgraph isomorphism problem. For similarity queries, I measure graph similarity through edit distance using heuristic graph mapping methods. Our index structure, called Closure-tree, organizes graphs hierarchically where each node summarizes its descendants by a generalized graph called a graph closure. Then, I propose GraphQL, a graph query language where graphs are the basic units of information and each query manipulates collections of graphs. The core of GraphQL is a graph algebra extended from the relational algebra where the selection operator is generalized to graph pattern matching and a composition operator is introduced for rewriting matched graphs. I then present efficient graph pattern matching over large graphs. 
In graph mining, I focus on finding significant graph patterns. For the case of a large collection of graphs, I present GraphRank, a technique that evaluates and ranks frequent subgraphs by their statistical significance. I also address feature vector mining that generalizes frequent itemset mining. In the case of mining a large weighted graph, I consider local maximal substructures around a given node. A scalable algorithm is developed for the k-MST problem (minimum spanning tree over k vertices) with approximation guarantees. All the presented techniques have been validated through extensive experiments on real and synthetic graphs.
Frequency Diverse Array Radars (2006)

This paper presents a generalized structure for a frequency diverse array radar. In its simplest form, the frequency diverse array applies a linear phase progression across the aperture. This linear phase progression induces an electronic beam scan, as in a conventional phased array. When an additional linear frequency shift is applied across the elements, a new term is generated which results in a scan angle that varies with range in the far-field. This provides more flexible beam scan options, as well as providing resistance to point interference such as multipath. More general implementations provide greater degrees of freedom for space-time-frequency-phase-polarization control, permitting novel concepts for simultaneous multi-mission operation, such as performing synthetic aperture radar and ground moving target indication at the same time.
Construction and evaluation of a noise-suppressing hydrophone (1993)

The construction and evaluation of an acoustic sensor is described which consists of two small pieces of piezoceramic bonded together with their poling axes collinear, one piece containing ordered macrovoids, the other solid. Electrical leads attached to each piece allow their outputs to be separately processed. The solid piece has a small hydrostatic voltage coefficient while the voided has a significantly larger voltage coefficient. Both have appreciable responses to vibration excitation along their poling axes. Hence, if the two electrical outputs are appropriately weighted, phase reversed, and then combined, the net response to vibration excitation should be negligible while the net response to an incident pressure wave should be essentially that of the voided piece alone. Hence, the assembly should function simultaneously as a poor accelerometer but a good hydrophone. The data show that at least 10 dB of vibration response cancellation and a large, nearly uniform, free-field voltage sensitivity are achieved over the frequency range from 5 to 20 kHz.
Glitch analysis and reduction in register transfer level power optimization (1996)

We present design-for-low-power techniques based on glitch reduction for register-transfer level circuits. We analyze the generation and propagation of glitches in both the control and data path parts of the circuit. Based on the analysis, we develop techniques that attempt to reduce glitching power consumption by minimizing generation and propagation of glitches in the RTL circuit. Our techniques include restructuring multiplexer networks (to enhance data correlations, eliminate glitchy control signals, and reduce glitches on data signals), clocking control signals, and inserting selective rising/falling delays. Our techniques are suited to control-flow intensive designs, where glitches generated at control signals have a significant impact on the circuit's power consumption, and multiplexers and registers often account for a major portion of the total power. Application of the proposed techniques to several examples shows significant power savings, with negligible area and delay overheads.
<p>Cytotoxic and Antimicrobial Efficacy of Silver Nanoparticles Synthesized Using a Traditional Phytoproduct, Asafoetida Gum</p> (2020)

As asafoetida is a good traditional medicine, its involvement in the synthesis of AgNPs led the silver nanoparticles to exhibit good cytotoxic and antimicrobial effects.
A Recursive Switched-Capacitor House-of-Cards Power Amplifier (2017)

A fully integrated CMOS power amplifier (PA) that efficiently generates high-voltage RF waveforms directly from a 4.8-V supply using only low-voltage thin-oxide transistors is introduced. High-voltage operation is achieved via implicit ~100% efficient dc-dc conversion enabled by stacking and flying individual class-D PA cells in a House-of-Cards (HoC) topology. By dynamically reconfiguring digitally controlled HoC slices to support different voltage conversion ratios and capacitively coupling their outputs, a Doherty-like high-efficiency backoff profile is achieved without using any magnetic impedance inverter. A test chip, implemented in 65-nm low-power CMOS, operates directly from 4.8 V using only 1.2-V transistors, and attains above 40% battery-to-RF efficiency at both 23-dBm peak power and at 6-dB backoff at 720 MHz. When applying a 10-MHz 16-quadrature amplitude modulation signal, the PA achieves an error vector magnitude of 3.6%-rms without using any predistortion techniques with an average output power and power-added efficiency of 15.7 dBm and 26.5%.
REAL-TIME SPEECH SYNTHESIS ON AN ULTRA LOW-RESOURCE, PROGRAMMABLE (2002)

An efficient implementation of a time- domain speech synthesis sys tem on an ultra low- power, miniature, programma ble block­ flating-point DSP system is introdu ced. The DSP system, operating at a clock rate as low as 1.28 MHz, is well suited for spe ech and audio proc ess ing applications. Similar to the MBR­ PSOLA technique, this time-domain synthesis method uses a nonnalized speech database generated by a high-quality harmonic synthesis. Touce the memory usage and communication bandwidth, the normalizdatabase is compressed using a block­ adaptive, ADPCM approach. Listen ing tests comparing the synthetic speech quality on the DSP system and the same method implemented on a high-resource computer system show no degradations due to the memory. register length, or other low­ res ourCe limitations on the DSP syst em. The system consumes less than I mW at I volt.
Signal Processing Techniques for EDGE Wireless Modem (2005)

Signal processing techniques play key role in the design of EDGE wireless modem. Performance enhancing techniques are reaching beyond traditional equalization and decoding techniques, providing final performance tuning capability to the system design. We address some of the key signal processing techniques for EDGE wireless modem, including I/Q imbalance compensation, DC offset correction and channel estimation
P‐56: New Reflective BTN LCD Modes with a Rear Retardation Film (2000)

Abstract The contrast ratios of new reflective bistable twisted nematic liquid crystal displays with rear quarter‐wave film are optimized by means of a parameter space approach. Both the absolute reflectance and the wavelength dispersion of two bistable twisted states are investigated. The simulation results show that super‐high contrast ratio, reflectance about 95% with polarized‐light‐input, large dΔn (0.63 μm) and little dispersion are possible for such reflective bistable liquid crystal display.
ARMA Time-Series Modeling with Graphical Models (2012)

We express the classic ARMA time-series model as a directed graphical model. In doing so, we find that the deterministic relationships in the model make it effectively impossible to use the EM algorithm for learning model parameters. To remedy this problem, we replace the deterministic relationships with Gaussian distributions having a small variance, yielding the stochastic ARMA (ARMA) model. This modification allows us to use the EM algorithm to learn parmeters and to forecast,even in situations where some data is missing. This modification, in conjunction with the graphicalmodel approach, also allows us to include cross predictors in situations where there are multiple times series and/or additional nontemporal covariates. More surprising,experiments suggest that the move to stochastic ARMA yields improved accuracy through better smoothing. We demonstrate improvements afforded by cross prediction and better smoothing on real data.
Introduction of Highly Tunable End-Groups in Polyethylene via Chain-Transfer Polymerization using a Cobalt(III) Catalyst (2019)

Highly tunable end-functionalized polyethylene molecules are directly synthesized via chain-transfer polymerization of ethylene with silanes as chain-transfer agents catalyzed by a pentamethyl cyclopentadienyl cobalt phosphite alkyl catalyst. A series of polymerizations and kinetic studies of the different elementary steps involved in the catalytic cycle were performed to establish the methodology and to gain a deeper understanding of the reaction mechanism. The rate of the chain transfer, and thus the polymer length, can be tuned independently by varying the silane concentration or substituents. The combination of a chain-transfer methodology with a late transition-metal-based catalyst makes this system more compatible to polar functionality. This is highlighted by the introduction of an organic dye as end group to yield a colored polyethylene material.
Modeling and Design of Spintronic Integrated Circuits (2012)

We present a theoretical and a numerical formalism for analysis and design of spintronic integrated circuits (SPINICs). The formalism encompasses a generalized circuit theory for spintronic integrated circuits based on nanomagnetic dynamics and spin transport. We propose an extension to the modified nodal analysis technique for the analysis of spin circuits based on the recently developed spin conduction matrices. We demonstrate the applicability of the framework using an example spin logic circuit described using spin Netlists.
An Externally Trimmed Integrated DC Current Regulator Insensitive to Conducted EMI (2008)

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper introduces a new integrated dc current regulator using external resistive trimming, which presents a high degree of immunity against conducted electromagnetic interference (EMI). While classic topologies generate erratic bias currents that are totally different from the expected value once EMI is injected into the circuit, this new topology succeeds in producing the same fixed dc current, whether EMI is present or not. Extra filtering requiring small on-chip capacitors ensures that the ripple on the output current due to the interference remains at a very low value. </para>
Vibration absorbers (1979)

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 Alan H. Vincent, Stephen P. King; Vibration absorbers. J. Acoust. Soc. Am. 1 July 1979; 66 (1): 334. https://doi.org/10.1121/1.382977 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
Cloning, in vitro expression, and tissue distribution of a human prostaglandin transporter cDNA(hPGT). (1996)

We recently identified a cDNA in the rat that encodes a broadly expressed PG transporter (PGT). Because PGs play diverse and important roles in human health and disease, we cloned human PGT (hPGT) from an adult human kidney cDNA library. A consensus sequence (4.0 kb) derived from several clones, plus 3' polymerase chain reaction amplification, exhibited 74% nucleic acid identity and 82% amino acid identity compared to rat PGT. When transiently expressed in HeLa cells, a full-length clone catalyzed the transport of PGE1, PGE2, PGD2, PGF2alpha, and, to a lesser degree, TXB2. Northern blotting revealed mRNA transcripts of many different sizes in adult human heart, placenta, brain, lung, liver, skeletal muscle, pancreas, kidney, spleen, prostate, ovary, small intestine, and colon. hPGT mRNAs are also strongly expressed in human fetal brain, lung, liver, and kidney. The broad tissue distribution and substrate profile of hPGT suggest a role in the transport and/or metabolic clearance of PGs in diverse human tissues.
A high efficiency DC-DC converter topology suitable for distributed large commercial and utility scale PV systems (2012)

In this paper a DC-DC power converter for distributed photovoltaic plant architectures is presented. The proposed converter has the advantages of simplicity, high efficiency, and low cost. High efficiency is achieved by having a portion of the input PV power directly fed forward to the output without being processed by the converter. The operation of this converter also allows for a simplified maximum power point tracker design using fewer measurements.
Countercurrent Chromatography of Proteins with Polyethylene Glycol-Dextran Polymer Phase Systems Using Type-XLLL Cross-Axis Coil Planet Centrifuge (1992)

Abstract The performance of a new model of countercurrent chromatograph called the XLLL cross-axis synchronous coil planet centrifuge was evaluated for protein separation. The apparatus produced a satisfactory retention of the stationary phase for the polymer phase systems composed of dextran T500, polyethylene glycol 8000 and potassium phosphate buffers. The capability of the apparatus was demonstrated in separations of histones and serum proteins.
Reactive Dyes (2000)

Abstract The article contains sections titled: 1. Introduction 2. Reactive Systems 2.1. Mono‐Anchor Dyes 2.2. Double‐Anchor Dyes 2.3. Multiple‐Anchor Dyes 3. Chromogens 3.1. Azo Dyes 3.2. Anthraquinone Dyes 3.3. Triphenodioxazine Dyes 3.4. Formazan Dyes 3.5. Phthalocyanine Dyes 4. Synthetic Procedures 5. Uses 5.1. Forms of Supply 5.2. Dyeing Processes
Characterization and overexpression of a novel <b>β</b>-agarase from <i>Thalassomonas agarivorans</i> (2013)

AgaB1 was the first β-agarase that was cloned and described from Thalassomonas species. In the light of properties of AgaB1, it has the potential as the biocatalyst for industrial applications.
Open5G: A Software-Defined Networking Protocol for 5G Multi-RAT Wireless\n Networks (2020)

Mobile Networks today comprise of multiple Radio Access Technologies (RATs),\ne.g., 4G LTE, Wireless Local Area Network (WLAN), and the upcoming 5G-New Radio\n(5G-NR). The access networks of these RATs are controlled by RAT-specific\nentities, e.g., the resource management function located inside an individual\nLTE eNB is used for the eNB control, or access controllers are used for\ncontrolling WLAN Access Points. Even in the 3GPP's 5G architecture, which has a\ncommon Core supporting multiple RATs, radio access related decisions are taken\nindependently within individual RATs. Due to the fragmented nature of\ncontrol-plane in multi-RAT Radio Access Network (RAN), a unified global view of\nnetwork resources is unavailable, hindering optimized allocation of resources.\nIt also brings complexity to the features involving multiple RATs, e.g., dual\nconnectivity. To address these issues, we introduced an SDN-based Multi-RAT RAN\narchitecture (SMRAN) in our earlier work [arXiv:1812.11825], where the RAN\ncontrol-plane is segregated from the data-plane. As part of the SMRAN\narchitecture, we defined a logically centralized multi-RAT RAN Controller and\nindividual RAT-specific data-plane functions. In the current work, we define a\nprotocol, called Open5G, to be used for control and management of the SMRAN\ndata-plane. Open5G is based on OpenFlow (OF) and OF-Config, which are commonly\nused protocols in the SDN-based wired networks and data centers.\n
Synthesis and characterization of polyimides based on new fluorinated 3,3?-diaminobiphenyls (1997)

Two new fluorinated diamine monomers, 3,3′-diamino-5,5′-bis(trifluoromethyl)biphenyl and 3,3′-diamino-6,6′-bis(trifluoromethoxy)biphenyl, as well as a known nonfluorinated analog, 3,3′-diaminobiphenyl, were synthesized. Reaction of these diamines with rigid, highly rod-like dianhydrides produced poly(amic acid)s and polyimides, which were spin coated and thermally treated to produce polyimide films for evaluation in electronics applications. It was hoped that these polyimide films would exhibit an ideal combination of low thermal expansion, reduced water absorption, and low dielectric constant but with improved elongation due to the “crankshaft” nature of the 3,3′-biphenyl unit. Unlike polyimide films from analogous 4,4′-diaminobiphenyls, however, the 3,3′-diaminobiphenyl-based polyimides did not yield low in-plane thermal expansion coefficient in spin-coated films. In some cases high elongation was achieved, but with high thermal expansion. These new diamines may nevertheless find utility in polyimides and polyaramides for membrane, fiber, and other applications. Additionally, they may be useful in modifying the properties of polymer backbones via copolymerization. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 2441–2451, 1997
Real-Time Detection of HIV-2 by Reverse Transcription–Loop-Mediated Isothermal Amplification (2014)

Currently, there are no FDA-approved nucleic acid amplification tests (NAATs) for the detection or confirmation of HIV-2 infection. Here, we describe the development of a real-time assay for the detection of HIV-2 DNA and RNA using reverse transcription-loop-mediated isothermal amplification (RT-LAMP) and the ESEQuant tube scanner, a portable isothermal amplification/detection device.
Vessel Schedule Recovery in Liner Shipping: Modeling Alternative Recovery Options (2020)

Disruption occurrences in liner shipping operations affect schedule reliability and may increase the total cost of delivering cargoes at ports. If a vessel experiences disruption occurrences either at ports of call or in sea, the liner shipping company is required to decide on the schedule recovery action to execute in order to recover the resulting delays. This study formulates a novel mathematical model for the vessel schedule recovery problem (VSRP) in liner shipping. The objective aims to minimize the total profit loss, suffered by the liner shipping company due to disruption occurrences at a given liner shipping route. A total of four recovery strategies are considered in the model, which include: (1) vessel sailing speed adjustment; (2) vessel handling rate adjustment; (3) port skipping without container diversion; and (4) port skipping with container diversion. The proposed mathematical formulation for the nonlinear VSRP model is solved to the global optimality using BARON. A set of computational experiments are further performed for the Middle East/Pakistan/India-West Mediterranean (WM3) route, which is served by the OOCL liner shipping company, for various scenarios of disruption occurrences in sea and at ports. The results from the performed analyses demonstrate potential benefits for liner shipping companies from using the proposed methodology for various realistic scenarios of disruptions.
Development of Ir based tool for friction stir welding of high temperature materials (2010)

A friction stir welding (FSW) tool with good properties at elevated temperature is needed to perform the friction stir welding of high temperature materials. One of the reasons for delaying the application of FSW to high temperature metals is the absence of such a tool. The purpose of this study was to develop a welding tool for the FSW of high temperature materials. As a result, it has been clarified that iridium (Ir) is almost unaffected by oxidation at elevated temperatures. The Ir alloy increases its recrystallization temperature, high-temperature strength and high-temperature hardness by the addition of rhenium (Re). Although SUS304 stainless steel was friction stir welded by an Ir-10at%Re welding tool, the tool was hardly deformed.
Dynamic space-vector model of induction machines with stator inter-turn short-circuit fault (2015)

This paper presents a simple state-space representation of induction machine (IM) transients under stator winding inter-turn short-circuit fault. The mathematical development of this dynamic model is presented in detail and the differential equations are transformed into space-vector form for reduction reasons. The simulations of this transient model are conducted in MatLab script using ordinary differential equation (ODE) solver. For verification purposes, the results of this simulation are compared with the ones obtained for the symmetrical IM. A turn fault signature study is performed for fault detection and identification using the electromagnetic torque ripple and the symmetric components transformation of the stator currents.
Acoustic-phonetic approach to speech recognition based on event detection and linear discriminant analysis (2001)

An approach to speech recognition based on phonetic-feature theory was developed to recognize the E-set. The speech signal is first segmented into broad classes based on parameters for the manner phonetic features sonorant, syllabic, continuant, and strident, in addition to silence. The speech signal is divided into the regions: vowel, sonorant consonant, strong fricative, weak fricative, and stop. The events specified by the manner features are then used to extract parameters relevant for the place phonetic features. In particular, we extract parameters for the place phonetic features labial and alveolar for stops; and alveolar and palatal for strong fricatives. Decisions at this stage of recognition are based on an optimal linear combination of parameters. The linear weights are obtained from the training data by applying linear discriminant analysis. The TI46 database is used for training and testing. The results of our event-based system are compared to a standard MFCC and HMM based recognizer. [Work supported by NSF Grant SBR-9729688.]