gebhart/patrepeval huggingface dataset:
Small-sized resonator IF filter using shear horizontal wave on heavy metal film/quartz substrate (2003)

By composing interdigital transducers (IDTs) and reflectors made of a heavy metal film such as Au, Ta, or W on an ST cut 90/spl deg/X propagation (direction perpendicular to X-axis) quartz substrate, the authors have succeeded in exciting a new type of shear horizontal (SH) wave. This wave has a large electromechanical coupling factor, a very large reflection coefficient and excellent temperature characteristics. Though a conventional longitudinally-coupled resonator filter using Rayleigh waves on an ST cut X propagation quartz substrate requires more than 300 fingers of Al grating reflector on each side of the Al-IDTs, our newly developed resonator filter, utilizing this SH wave, requires only about 10 grating fingers for the reflector at most due to the large reflection coefficient. The authors applied this SH wave to filters for the first intermediate frequency (IF) stage of global system for mobile communications (GSM), personal handy phone system (PHS) and personal digital cellular (PDC in Japan) system. As a result, we succeeded in developing low loss and small-sized IF filters (3/spl times/3/spl times/1.03mm/sup 3/) having a high stop band rejection, a sufficient bandwidth without expansion coil, and excellent temperature properties for the first time.
52.1 Tb/s C-band DCI transmission over DCI distances at 52.1 Tb/s C-Band DCI Transmission over DCI Distances at 1.49 Tb/s/λ.49\ \text{Tb}/\mathrm{s}/\lambda$ (2020)

We report on a DWDM DCI transmission system relying on highest per channel symbol rate of 1.49 Tb/s at 128 GBaud. We compare transmission over G.652 and G.654.E fiber and report a new capacity record of 52.1 Tb/s for C-band transmission.
Estimating Tracking Sources and Sinks (2003)

When tracking in a particular environment, objects tend to appear and disappear at certain locations. These locations may correspond to doors, garages, tunnel entrances, or even the edge of a camera view. A tracking system with knowledge of these locations is capable of improved initialization of tracking sequences, reconstitution of broken tracking sequences, and determination of tracking sequence termination. Further, knowledge of these locations is useful for activity-level descriptions of tracking sequences and for understanding relationships between non-overlapping camera views. This paper introduces a method for simultaneously solving these coupled problems: inferring the parameters of a source and sink model for a scene; and fixing broken tracking sequences and other tracking failures. A model selection criterion is also explained which allows determination of the number of sources and sinks in an environment. Results in multiple environments illustrate the effectiveness of this method.
Predicting the spectral shape of multi-section quantum dot superluminescent LEDs (2011)

By characterizing the light emission from reconfigurable edge-emitting devices, measured gain and spontaneous emission data are fed into a theoretical model to predict the spectral shape of quantum dot superluminescent LEDs.
Pathfinder: Building the Enterprise Data Map (2021)

Pathfinder is a novel way of discovering, curating and disseminating heterogeneous metadata from multiple distributed systems at the scale of an entire enterprise. The management of metadata at scale has aspects that are similar to big data processing systems in regard to the need for handling high volumes of fast changing data derived from very varied sources. Pathfinder uses well known techniques from the data processing world such as schema-on-read, immutable logs, eventing, loose coupling etc. that are currently not widely used in metadata systems. At the core of Pathfinder is a Write-Ahead Log (WAL) for the entire set of metadata changes in an enterprise. This log contains a graph of an enterprise's data ecosystem that we call the Enterprise Data Map (EDM). The EDM is used by multiple independent processing systems that extract actionable information from the gathered metadata.
A Feasibility Test for Linear Interference Alignment in MIMO Channels With Constant Coefficients (2014)

In this paper, we consider the feasibility of linear interference alignment (IA) for multiple-input-multiple-output (MIMO) channels with constant coefficients for any number of users, antennas, and streams per user, and propose a polynomial-time test for this problem. Combining algebraic geometry techniques with differential topology ones, we first prove a result that generalizes those previously published on this topic. In particular, we consider the input set (complex projective space of MIMO interference channels), the output set (precoder and decoder Grassmannians), and the solution set (channels, decoders, and precoders satisfying the IA polynomial equations), not only as algebraic sets, but also as smooth compact manifolds. Using this mathematical framework, we prove that the linear alignment problem is feasible when the algebraic dimension of the solution variety is larger than or equal to the dimension of the input space and the linear mapping between the tangent spaces of both smooth manifolds given by the first projection is generically surjective. If that mapping is not surjective, then the solution variety projects into the input space in a singular way and the projection is a zero-measure set. This result naturally yields a simple feasibility test, which amounts to checking the rank of a matrix. We also provide an exact arithmetic version of the test, which proves that testing the feasibility of IA for generic MIMO channels belongs to the bounded-error probabilistic polynomial complexity class.
Schottky barrier height of boride-based rectifying contacts to p-GaN (2006)

Schottky contact formation on p-GaN using a W2B-based metallization scheme was investigated using x-ray photoelectron spectroscopy (XPS), current-voltage (I-V), and capacitance-voltage (C-V) measurements. The Schottky barrier height (SBH) determined from XPS is 2.7eV, whereas fitting of the I-V’s gives 1.2 and 3.8eV depending on the assumed mechanism of forward current flow. While the C-V’s and the measurement temperature dependence of the I-V’s support tunneling as being the dominant transport mechanism, this latter approach overestimates the true SBH of W2B∕p-GaN contacts due to the presence of an interfacial layer acting as an additional barrier to carrier transport.
Semi-Supervised Multitask Learning on Multispectral Satellite Images Using Wasserstein Generative Adversarial Networks (GANs) for Predicting Poverty (2019)

Obtaining reliable data describing local poverty metrics at a granularity that is informative to policy-makers requires expensive and logistically difficult surveys, particularly in the developing world. Not surprisingly, the poverty stricken regions are also the ones which have a high probability of being a war zone, have poor infrastructure and sometimes have governments that do not cooperate with internationally funded development efforts. We train a CNN on free and publicly available daytime satellite images of the African continent from Landsat 7 to build a model for predicting local economic livelihoods. Only 5% of the satellite images can be associated with labels (which are obtained from DHS Surveys) and thus a semi-supervised approach using a GAN (similar to the approach of Salimans, et al. (2016)), albeit with a more stable-to-train flavor of GANs called the Wasserstein GAN regularized with gradient penalty(Gulrajani, et al. (2017)) is used. The method of multitask learning is employed to regularize the network and also create an end-to-end model for the prediction of multiple poverty metrics.
A Flexible Metal‐Catalyzed Synthesis of Highly Substituted Aryl Phenanthrenyl Selenides (2012)

Abstract An efficient method for the preparation of diaryl selenides, which are important in biology and materials science, is described. Specifically, the development of highly substituted phenanthrenyl phenyl selenides 4 and 6 by metal‐catalyzed cyclization of o ‐phenylarylalkynes species 1 was successfully performed. The selectivity for 9‐ and 10‐selenyl phenanthrenes was perfectly controlled by indium(III) and gold(I) catalysts, and the reactions proceed through different pathways. For the In(OTf) 3 catalyst system, 6‐ endo cyclization of alkyne 3 gives product 4 in which the selenium group is retained. In contrast, for the AuCl(IPr)/AgSbF 6 catalyst system, transformation of metal–alkyne complex 2 into vinylidene–gold intermediate 5 gives product 6 in which the selenium group is migrated. Various substrates, even electronically poor substrates, can be converted into phenanthrenes with high selectivity in high yield under very mild conditions.
Effects of Arabinosylcytosine-Substituted DNA on DNA/RNA Hybrid Stability and Transcription by T7 RNA Polymerase (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of Arabinosylcytosine-Substituted DNA on DNA/RNA Hybrid Stability and Transcription by T7 RNA PolymeraseThomas Mikita and G. Peter BeardsleyCite this: Biochemistry 1994, 33, 31, 9195–9208Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://doi.org/10.1021/bi00197a023RIGHTS & PERMISSIONSArticle Views92Altmetric-Citations14LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (5 MB) Get e-Alerts Get e-Alerts
BadNets: Identifying Vulnerabilities in the Machine Learning Model Supply Chain (2017)

Deep learning-based techniques have achieved state-of-the-art performance on a wide variety of recognition and classification tasks. However, these networks are typically computationally expensive to train, requiring weeks of computation on many GPUs; as a result, many users outsource the training procedure to the cloud or rely on pre-trained models that are then fine-tuned for a specific task. In this paper we show that outsourced training introduces new security risks: an adversary can create a maliciously trained network (a backdoored neural network, or a \emph{BadNet}) that has state-of-the-art performance on the user's training and validation samples, but behaves badly on specific attacker-chosen inputs. We first explore the properties of BadNets in a toy example, by creating a backdoored handwritten digit classifier. Next, we demonstrate backdoors in a more realistic scenario by creating a U.S. street sign classifier that identifies stop signs as speed limits when a special sticker is added to the stop sign; we then show in addition that the backdoor in our US street sign detector can persist even if the network is later retrained for another task and cause a drop in accuracy of {25}\% on average when the backdoor trigger is present. These results demonstrate that backdoors in neural networks are both powerful and---because the behavior of neural networks is difficult to explicate---stealthy. This work provides motivation for further research into techniques for verifying and inspecting neural networks, just as we have developed tools for verifying and debugging software.
Similar Structural Dynamics for the Degradation of CH3NH3PbI3 in Air and in Vacuum (2015)

We investigate the degradation path of MAPbI3 (MA=methylammonium) films over flat TiO2 substrates at room temperature by means of X-ray diffraction, spectroscopic ellipsometry, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. The degradation dynamics is found to be similar in air and under vacuum conditions, which leads to the conclusion that the occurrence of intrinsic thermodynamic mechanisms is not necessarily linked to humidity. The process has an early stage, which drives the starting tetragonal lattice in the direction of a cubic atomic arrangement. This early stage is followed by a phase change towards PbI2 . We describe how this degradation product is structurally coupled with the original MAPbI3 lattice through the orientation of its constituent PbI6 octahedra. Our results suggest a slight octahedral rearrangement after volatilization of HI+CH3 NH2 or MAI, with a relatively low energy cost. Our experiments also clarify why reducing the interfaces and internal defects in the perovskite lattice enhances the stability of the material.
ISOLATION AND CHARACTERIZATION OF A STABLE DITHIOXOPHOSPHORANE (1984)

Abstract A sterically protected dithioxophosphorane, 2,4,6-tri-t-butylphenyldithioxophosphorane, has been isolated and characterized for the first time as a stable compound.
Single Molecule Spectroscopy : Photon Correlation And Electric Field Effect. (1992)

The first single molecule detection, by Moerner and colleagues [1] in the system pentacene in p-terphenyl crystal via absorption, has been extremely difficult due to photon noise. In our paper [2], we demonstrated for the first time single molecule lines in fluorescence excitation spectra of the same system. This much simpler method provides a dramatic improvement of the signal/noise ratio. It opened the way for a true single molecule spectroscopy (SMS). Since then, several experiments performed using this technique [3-8] have shown the power and promise of this new spectroscopic method. In this report, we want to apply SMS to obtain detailed information about individual molecules and the differences in some spectroscopic properties due to their local surroundings. We also report on preliminary results on electric field effects on single molecule lines.
Need for and requirements for neutron irradiation facility for fusion materials testing (1989)

The construction and operation of an intense 14MeV neutron source is essential for the development and eventual qualification of structural materials for a fusion reactor demonstration plant (DEMO). Because of the time required for materials developed and the scale-up of materials to commercial production, a decision to build a neutron source should precede engineering design activities for a DEMO by at least 20 years. The characteristic features of 14MeV neutron damage are summarized including effects related to cascade structure, transmutation production, and dose rate. The importance of a 14MeV neutron source for addressing fundamental radiation damage issues, alloy development activities and the development of an engineering data bases is discussed. From these considerations the basic requirements and machine parameters are derived. 14 refs., 5 figs., 5 tabs.
Importance of dipole moments and ambient polarity for the conformation of Xaa–Pro moieties – a combined experimental and theoretical study (2015)

NMR spectroscopic studies with a series of proline derivatives revealed that the polarity of the environment has a significant effect on the <i>trans</i> : <i>cis</i> isomer ratio of Xaa-Pro bonds. Computational studies showed that this effect is due to differences in the overall dipole moments of <i>trans</i> and <i>cis</i> conformers. Comparisons between the conformational properties of amide and ester derivatives revealed an intricate balance between polarity effects and n → π* interactions of adjacent carbonyl groups. The findings have important implications for protein folding and signaling as well as the performance of proline-based stereoselective catalysts.
Direct DRAQ5 DNA staining on sterilized and contaminated wood surface: an investigation by confocal microscopy (2018)

Direct DRAQ5 DNA staining on sterilized and contaminated wood surface: an investigation by confocal microscopy. 7ème conférence GDR bois
The Preclinical Bases of the Rational Combination of Paclitaxel and Antiangiogenic Drugs (2014)

In the present review we report the preclinical development of paclitaxel-based combination treatment with antiangiogenic drugs and their translation into clinical practice. A particular attention is paid to the mechanisms by which an interaction between paclitaxel and antiangiogenic drugs may be advocated. In mid ‘90s, the discovery of the antiangiogenic properties of paclitaxel has widened the possible uses of the drug for the treatment of solid tumors. In fact, paclitaxel is able to negatively modulate vascular endothelial growth factor (VEGF) and angiopoietin-1 expression, whereas the drug may induce an increased expression of the antiangiogenic endogenous modulator thrombospondin-1. On the basis of these discoveries, several promising antiangiogenic treatments have been identified in preclinical models, in which paclitaxel has been administered together with direct antiangiogenic drugs (i.e., bevacizumab and vandetanib). In other cases, the paclitaxel-based combination included inhibitors of those mediators whose activity is associated with and supports neovessel formation, such as matrix metalloproteinases, cyclooxygenase-2 and endothelin-1. The synergistic cytotoxic effect of combined treatments may depend on the capability of paclitaxel to inhibit both tissue invasion by tumors (i.e., antagonizing matrix metallo-proteinase activity) and secretion of pro-angiogenic mediators (i.e., VEGF) through an antagonistic effect of the taxane against endothelin-1/endothelin A receptor. Some of these combination treatments have not yet (or will not) reach clinical studies and the therapeutic armamentarium, despite the promising results achieved in preclinical models. However, they may play a role as proof-of-concept in the growing knowledge and interest in the mechanism by which we can modulate or halt angiogenic processes driven by tumors. Keywords: Angiogenesis, angiopoietin-1, antiangiogenic drugs, bevacizumab, cediranib, celecoxib, cetuximab, gefitinib, lapatinib, matrix metalloproteinases, monoclonal antibodies, paclitaxel, preclinical studies, receptor tyrosine-kinases, sorafenib, thrombospondin-1, TNP-470, trastuzumab, vandetanib, vascular endothelial growth factor.
3-D MHD simulation of a railgun hybrid armature (1997)

A 3-D plasma MHD code MAP3 was developed to simulate the flow in railgun plasma armatures. MAP3 has now been used to simulate qualitatively the plasma flow around a hybrid armature. The first simulation considered an aluminum hybrid armature in a 1-cm square bore, similar to the conditions for hybrid armature experiments performed earlier at UTSL. Simulation results agree with flow paths observed visually on the recovered experimental armatures at UTSL. The second simulation considered a hybrid armature in a 2-cm square bore. The fraction of the current carried in the solid armature increases with the bore dimension, which is consistent with experimental observations.
Controlled release device prevents damage from dynamic stresses (1966)

Controlled release device that retards motion by extruding or drawing a tapered ductile pin through a die will control launch vehicle motion at liftoff. The device prevents the damaging dynamic stresses that are imposed on the vehicle when it is instantaneously released at full thrust.
Prediction of peptidoglycan hydrolases- a new class of antibacterial proteins (2016)

http://metagenomics.iiserb.ac.in/hype/ and http://metabiosys.iiserb.ac.in/hype/ .
Quantitative assessment of ischemia and reactive hyperemia of the dermal layers using multi - spectral imaging on the human arm (2009)

Quantitative assessment of skin chromophores in a non-invasive fashion is often desirable. Especially pixel wise assessment of blood volume and blood oxygenation is beneficial for improved diagnostics. We utilized a multi-spectral imaging system for acquiring diffuse reflectance images of healthy volunteers' lower forearm. Ischemia and reactive hyperemia was introduced by occluding the upper arm with a pressure cuff for 5min with 180mmHg. Multi-spectral images were taken every 30s, before, during and after occlusion. Image reconstruction for blood volume and blood oxygenation was performed, using a two layered skin model. As the images were taken in a non-contact way, strong artifacts related to the shape (curvature) of the arms were observed, making reconstruction of optical / physiological parameters highly inaccurate. We developed a curvature correction method, which is based on extracting the curvature directly from the intensity images acquired and does not require any additional measures on the object imaged. The effectiveness of the algorithm was demonstrated, on reconstruction results of blood volume and blood oxygenation for in vivo data during occlusion of the arm. Pixel wise assessment of blood volume and blood oxygenation was made possible over the entire image area and comparison of occlusion effects between veins and surrounding skin was performed. Induced ischemia during occlusion and reactive hyperemia afterwards was observed and quantitatively assessed. Furthermore, the influence of epidermal thickness on reconstruction results was evaluated and the exact knowledge of this parameter for fully quantitative assessment was pointed out.
Preliminary Evaluation of Recommended Airline Exercises for Optimal Calf Muscle Pump Activity (2006)

A preliminary study to investigate which of the recommended airline exercises for DVT prevention produce optimal calf muscle pump activity. Four subjects were instructed to carry out ten lower leg exercises based on those recommended by airlines for DVT prevention. An EMG sensor was used to record calf muscle activity and a motion analysis system was used to ensure the exercise was conducted correctly. Statistical analysis showed significant differences in the level of calf muscle pump activity induced by the different exercises. Heel rise foot pumps were shown to induce highest levels of activity while many exercises did not induce any significant calf muscle activity at all. These findings indicate that a further, more detailed examination of the exercises recommended to passengers for DVT prevention on long distance flights should be conducted to determine the potential benefit to the health and safety of the passenger.