gebhart/patrepeval huggingface dataset:
One-Dimensional Interpolation Based Channel Estimation for Mobile DVB-H Reception (2006)

Orthogonal frequency-division multiplexing (OFDM) modulation provides a high data rate communication service. However, in mobile reception, a loss of sub-carrier orthogonality due to Doppler-spread leads to inter-carrier interference (ICI). This paper proposes a channel estimation scheme based on one-dimensional raised cosine interpolation. A time-domain raised cosine interpolation plus a frequency-domain raise cosine interpolator with adaptive roll-off factor can estimate the channel response very well in high-mobility environments.
Immobilization of Photoelectric Dye on the Polyethylene FilmSurface (2005)

PE film was treated with fuming nitric acid at 80℃ for 20 min, resulting in introduction of COOH moieties on the film surface. The COOH’s were reacted with ethylenediamine, whose amino groups were used for linking with (2-[4-(dibutylamino)phenyl]ethenyl)-3-carboxy-methylbenzo-thiazolium, photoelectric dye (NK-5962), which absorbs visible light and converts the photon energy to electric potentials. The dye molecules were immobilized on the PE film surface and they were able to stimulate chick retinal tissues on incidence of visible light. These facts hopefully lead to development of an artificial retinal prosthesis.
Compact broadband MMIC Schottky frequency tripler for 75–140 GHz (2011)

In this paper a monolithically integrated frequency tripler based on an antiparallel pair of Schottky diodes is presented. The tripler is designed for flat output power response and wide frequency range. With 2 mW of input power the tripler covers the frequency range of 75–140 GHz (bandwidth 60 %) delivering output power between −19.4 dBm and −14.7 dBm with an average efficiency of 1.1 %. The efficiency of the tripler stays almost constant in a wide input power range. With the largest available input power level of the test setup, 17.1 dBm, the tripler output power is −2.4 dBm and efficiency 1.1 % at 75 GHz, and the output is not yet saturated. The input and output matching and filtering circuits are optimized to minimize the chip dimensions. The total chip area including RF and bias probe pads is only 0.47 mm2. The state-of-the-art results are achieved in the small size of the chip as well as in the wide frequency bandwidth.
Interferon Alpha Induction of Stat1 and Stat2 and Their Prognostic Significance in Carcinoid Tumors (2001)

IFN-alpha has been shown to elicit antitumor activity in carcinoid tumors. In the present study the effects of IFN-alpha on the protein expression involved in the IFN-alpha signaling, which were recognized as signal transducer and activators of transcription (Stats), were investigated. Archive specimens from 45 carcinoid patients, 33 before IFN-alpha and 45 during treatment, were studied. The tissues were immunostained for protein expression by using monoclonal anti-Stat1 and anti-Stat2 antibodies. Results showed that Stat1 and Stat2 immunostaining were significantly increased during IFN-alpha treatment. Stats scores were significantly increased only in patients with objective response as well as those with stable disease but not in those with progressive disease. The induction of Stats correlated with the survival rates of the patients. In addition, both Stat scores significantly correlated with the p68 protein expression. In a carcinoid tumor cell line, Bon1, IFN-alpha dose-dependently increased the Stat expression. Analysis of cell fractions showed that IFN-alpha increased Stat protein both in cytoplasm and nucleoplasm of the cells. Furthermore, IFN-alpha enhanced tyrosine phosphorylation of Stat1 and Stat2. Thus, the antitumor effect, in vivo and in vitro, in IFN-alpha-treated carcinoid tumors seems to be mediated via upregulation of Stat proteins and enhancement of phosphorylation of these proteins.
Range-sensor based navigation in three dimensions (2003)

Presents a globally convergent range-sensor based navigation algorithm in three-dimensions, called 3D Bug. The 3D Bug algorithm navigates a point robot in a three-dimensional unknown environment using position and range sensors. The algorithm strives to process the sensory data in the most reactive way possible, without sacrificing the global convergence guarantee. Moreover, unlike previous reactive-like algorithms, 3D Bug uses three-dimensional range data and plans three-dimensional motion throughout the navigation process. The algorithm alternates between two modes of motion. During motion towards the target, which is the first motion mode of the algorithm, the robot follows the locally shortest path in a purely reactive fashion. During traversal of an obstacle surface, which is the second mode of motion, the robot incrementally constructs a reduced data structure of an obstacle, while performing local shortcuts based on range data. We resent preliminary simulation results of the algorithm, which show that 3D Bug generates paths that resemble the globally shortest path in simple scenarios. Moreover, the algorithm generates reasonably short paths even in concave, room-like environments.
Photosensitive Function of Encapsulated Dye in Carbon Nanotubes (2007)

Single-wall carbon nanotubes (SWCNTs) exhibit resonant absorption localized in specific spectral regions. To expand the light spectrum that can be utilized by SWCNTs, we have encapsulated squarylium dye into SWCNTs and clarified its microscopic structure and photosensitizing function. X-ray diffraction and polarization-resolved optical absorption measurements revealed that the encapsulated dye molecules are located at an off center position inside the tubes and aligned to the nanotube axis. Efficient energy transfer from the encapsulated dye to SWCNTs was clearly observed in the photoluminescence spectra. Enhancement of transient absorption saturation in the S1 state of the semiconducting SWCNTs was detected after the photoexcitation of the encapsulated dye, which indicates that ultrafast (<190 fs) energy transfer occurred from the dye to the SWCNTs.
Single Image Super Resolution from Compressive Samples Using Two Level Sparsity Based Reconstruction (2015)

Super Resolution based on Compressed Sensing (CS) considers low resolution (LR) image patch as the compressive samples of its high resolution (HR) patch. Compressed sensing based image acquisition systems acquire less number of random linear measurements without first collecting all the pixel values. But using these compressive measurements directly to reconstruct the image causes quality issues. In this paper an image super-resolution method with two level sparsity based reconstruction via patch based image interpolation and dictionary learning is proposed. The first level reconstruction generates a low resolution image from random samples and the interpolation scheme used in this algorithm reduces the HR-LR patch coherency due to neighborhood issue which is a major drawback of single image super resolution algorithms. The dictionary based reconstruction phase generates the high resolution image from the low resolution output of the first level reconstruction phase. The experimental results proved that the proposed two level reconstruction scheme recovers more details of the image and yields improved results from very few samples (around 35-45%) than the state-of-the-art algorithms which uses low resolution image itself as input. The results are compared by considering both PSNR values and visual perception.
A ring-resonator-based silicon photonics transceiver with bias-based wavelength stabilization and adaptive-power-sensitivity receiver (2013)

Silicon photonic links based on ring-resonator devices provide a unique opportunity to deliver distance-independent connectivity, whose pin-bandwidth scales with the degree of wavelength-division multiplexing. However, reliability and robustness are major challenges to widespread adoption of ring-based silicon photonics. In this work, a CMOS photonic transceiver architecture is demonstrated that incorporates the following enhancements: transmitters with independent dual-edge pre-emphasis to compensate for modulator bandwidth limitations; a bias-based tuning loop to calibrate for resonance wavelength variations; and an adaptive sensitivity-bandwidth receiver that can self-adapt for insitu variations in input capacitance, modulator/photodetector performance, and link budget.
HA1077, a Rho kinase inhibitor, suppresses glioma‐induced angiogenesis by targeting the Rho‐ROCK and the mitogen‐activated protein kinase kinase/extracellular signal‐regulated kinase (MEK/ERK) signal pathways (2010)

Malignant gliomas are characterized by high invasive potential and strong angiogenic ability. Constitutive activation of Rho and its downstream target Rho-kinase are crucial for tumor progression. We investigated the effect of the Rho-kinase inhibitor HA1077 on tumor-induced angiogenesis of malignant glioma cells and explored the molecular mechanisms underlying the effect of HA1077. Here, we demonstrated that HA1077 suppressed tube formation of endothelial cells in human umbilical vein endothelial cell (HUVEC)-glioma cell co-culture assay. Western blot, RT-PCR, ELISA and zymography demonstrated that HA1077 suppressed gene and protein expressions of vascular endothelial growth factor (VEGF), matrix metalloproteinase (MMP)-2 and MMP-9 in glioma cells. Furthermore, HA1077 attenuated the phosphorylation of extracellular signal-regulated kinases 1 and 2 (ERK1/2) and the DNA binding activity of activator protein-1, a key downstream transcriptional factor of ERK1/2. HA1077 also suppressed the migration of HUVEC in vitro. Thus, it is suggested that the anti-angiogenic effect of HA1077 may be due to the combination of ROCK inhibition and mitogen-activated protein kinase kinase (MEK)/ERK pathway inhibition. Moreover, an in vivo intracerebral human glioma cell xenograft mouse model demonstrated that HA1077 suppressed neovascularity and tumor growth. The results of the present study suggest that HA1077 has a therapeutic potential as an anti-angiogenic agent against malignant gliomas.
Ontology-based extraction and structuring of information from data-rich unstructured documents (1998)

We present a new approach to extracting information from unstructured documents based on an application ontology that describes a domain of interest. Starting with such an ontology, we formulate rules to extract constants and context keywords from unstructured documents. For each unstructured document of interest, we extract its constants and keywords and apply a recognizer to organize extracted constants as attribute values of tuples in a generated database schema. To make our approach general, we fix all the processes and change only the ontological description for a different application domain. In experiments we conducted on two different types of unstructured documents taken from the Web, our approach attained recall ratios in the 80% and 90% range and precision ratios near 98%.
Kirigami‐Enabled, Passive Resonant Sensors for Wireless Deformation Monitoring (2019)

Abstract A passive resonant sensor with kirigami patterning is presented to wirelessly report material deformation in closed systems. The sensors are fabricated from copper‐coated polyimide by etching a conductive Archimedean spiral and then laser cutting kirigami patterns. The sensor response is defined as the resonant frequency in the transmission scattering parameter signal ( S 21 ), which is captured via a benchtop vector network analyzer. The sensors are tested over a 0–22 cm range of extension and show a significant shift in resonant frequency (e.g., 90 MHz shift for 10 cm stretch). Furthermore, the effect of resonator coil pitch on the extension sensor gain (MHz cm −1 ) and linear span of the sensor is studied. The repeatability of the sensor gain is confirmed by performing hysteresis cycles. The sensors is coated with polydimethylsiloxane films to protect from electrical shorting in aqueous environments. The coated resonators are placed in a pipe to report flow rates. The sensor with 1 mm coating is found to have the largest gain (0.17 MHz⋅s mL −1 ) and linear span (10–100 mL s −1 ). Thus, flexible resonant sensors with kirigami‐inspired patterns can be tuned via geometric and coating considerations to wirelessly report a large range of extension lengths for potential uses in health monitoring, motion tracking, deformation detection, and soft robotics.
Nonenzymic Plasmid Ligation Mediated by Minor Groove-Binding Molecules (1994)

International audience
Resisting Shoulder Surfing Attack Using Pass Matrix and Pair Base Techniques (2018)

Now a days India is moving towards a digital India while moving towards a digitization security is major concern. For providing security traditional authentication methods are used like credentials, OTP, LTP, etc. But there are major security threats while using this methods.
Web application and mobile application are used widely in everywhere with various devices. This evolution is very useful but also increases probability leaking a password through shoulder surfing attacks. In this attack, attacker can observe directly or by external recording devices or video capturing are used for collecting password. To overcome this we proposed a system that provides pair base method and graphical password based on pass matrix concept to resist shoulder surfing attack. Pass Matrix is considered a novel and easy-to-use graphical password authentication system, which can effectively improve shoulder-surfing attacks. In graphical password where users click on images to authenticate themselves. Experimental result show that, the proposed system achieves better resistance to shoulder surfing attacks while maintaining usability.
Geometric modeling based on triangle meshes (2006)

This course is designed to cover the entire geometry processing pipeline based on triangle meshes. We will present the latest concepts for mesh generation and mesh repair, for geometry and topology optimizations like mesh smoothing, decimation, and remeshing, for parametrization, segmentation, and shape editing. In addition to describing and discussing the related algorithms, we will also give valuable implementation hints and provide source code for most of the covered topics. The course assumes only very basic knowledge on geometric concepts in general, but does not require specific knowledge on polygonal meshes and how to discretize the respective problems for those. It is intended for computer graphics researchers, software developers and engineers from CAGD, computer games, or the movie industry, who are interested in geometry processing algorithms based on triangle meshes.
Multimodality Imaging of Integrin α<sub>v</sub>β<sub>3</sub> Expression (2011)

Over the last decade, integrin α(v)β(3) has been studied with every single molecular imaging modality. Since no single modality is perfect and sufficient to obtain all the necessary information for a particular question, combination of certain molecular imaging modalities can offer synergistic advantages over any modality alone. This review will focus on multimodality imaging of integrin α(v)β(3) expression, where the contrast agent used can be detected by two or more imaging modalities, such as combinations of PET and optical, SPECT and fluorescence, PET and MRI, SPECT and MRI, and lastly, MRI and fluorescence. Most of these agents are based on certain type(s) of nanoparticles. Contrast agents that can be detected by more than two imaging modalities are expected to emerge in the future and a PET/MRI/fluorescence agent will likely find the most future biomedical/clinical applications. Big strides have been made over the last decade for imaging integrin α(v)β(3) expression and several PET/SPECT probes have been tested in human studies. For dualmodality and multimodality imaging applications, a number of proof-of-principle studies have been reported which opened up many new avenues for future research. The next decade will likely witness further growth and continued prosperity of molecular imaging studies focusing on integrin α(v)β(3), which can eventually impact patient management.
Breast Tissue Expander—Related Infections: Perioperative Antimicrobial Regimens (2013)

Contrary to the proven effectiveness of a single dose of perioperative antibiotics, the common use of local antimicrobial irrigation and prolonged postoperative oral antibiotics appears to be an inadequate component of our preventive armamentarium. Also, because methicillin-resistant staphylococcal and pseudomonal infections occurred approximately 60% of the time, at institutions that have observed an increase of these organisms, it may be prudent that perioperative antimicrobials target these microorganisms.
Effect of an NK1/NK2 Receptor Antagonist on Airway Responses and Inflammation to Allergen in Asthma (2006)

Despite its demonstrated pharmacologic activity against inhaled NKA, multiple doses of AVE5883 increased the allergen-induced airway responses without affecting markers of airway hyperresponsiveness and airway inflammation. Our data question the prominent role of neurogenic inflammation in asthma and, consequently, the therapeutic potential of dual tachykinin antagonists.
Targeting polymeric fluorescent nanodiamond-gold/silver multi-functional nanoparticles as a light-transforming hyperthermia reagent for cancer cells (2013)

This work demonstrates a simple route for synthesizing multi-functional fluorescent nanodiamond-gold/silver nanoparticles. The fluorescent nanodiamond is formed by the surface passivation of poly(ethylene glycol) bis(3-aminopropyl) terminated. Urchin-like gold/silver nanoparticles can be obtained via one-pot synthesis, and combined with each other via further thiolation of nanodiamond. The morphology of the nanodiamond-gold/silver nanoparticles thus formed was identified herein by high-resolution transmission electron microscopy, and clarified using diffraction patterns. Fourier transform infrared spectroscopy clearly revealed the surface functionalization of the nanoparticles. The fluorescence of the materials with high photo stability was examined by high power laser irradiation and long-term storage at room temperature. To develop the bio-recognition of fluorescent nanodiamond-gold/silver nanoparticles, pre-modified transferrin was conjugated with the gold/silver nanoparticles, and the specificity and activity were confirmed in vitro using human hepatoma cell line (J5). The cellular uptake analysis that was conducted using flow cytometry and inductively coupled plasma mass spectrometry exhibited that twice as many transferrin-modified nanoparticles as bare nanoparticles were engulfed, revealing the targeting and ease of internalization of the human hepatoma cell. Additionally, the in situ monitoring of photothermal therapeutic behavior reveals that the nanodiamond-gold/silver nanoparticles conjugated with transferrin was more therapeutic than the bare nanodiamond-gold/silver materials, even when exposed to a less energetic laser source. Ultimately, this multi-functional material has great potential for application in simple synthesis. It is non-cytotoxic, supports long-term tracing and can be used in highly efficient photothermal therapy against cancer cells.
Method for the preparation of nanocrystalline diamond thin films (2023)

A method and system for manufacturing nanocrystalline diamond film on a substrate such as field emission tips. The method involves forming a carbonaceous vapor, providing a gas stream of argon, hydrocarbon and possibly hydrogen, and combining the gas with the carbonaceous vapor, passing the combined carbonaceous vapor and gas carrier stream into a chamber, forming a plasma in the chamber causing fragmentation of the carbonaceous vapor and deposition of a diamond film on the field emission tip.
A modified cross-correlation algorithm to achieve the time difference of arrival in sound source localization (2019)

The accuracy in ranging and direction in locating a target source is crucial in sound source localization and different methods have been proposed due to important applications of sound source localization. One of the methods in sound source localization is triangulation with the time difference of arrival information. In this literature, a modified cross-correlation algorithm is introduced to increase the accuracy in time difference of arrival, thus further improving the sound source localization results. A numerical model is generated by assuming multiple sound sources broadcasting in room environment and the location of the target sound source is identified with the triangulation algorithm. Real-time data are produced through experimental setup using an array of four microphones with a target source and background noise. The signals are processed by modified cross-correlation and conventional cross-correlation for comparison. The impacts of the signal-to-noise ratio and time difference of arrival on sound source localization results are demonstrated and discussed. Experimental validation conducted in a non-ideal environment has shown that the modified cross-correlation algorithm can minimize the error in time difference of arrival to be used in sound source localization, thus improving the accuracy in both sound source ranging and direction.
ChemInform Abstract: A New and Efficient Route to Derivatives of (R)‐4‐Hydroxycyclohex‐2‐enone. (2002)

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.
Cerebral hemodynamics of the aging brain: risk of Alzheimer disease and benefit of aerobic exercise (2014)

Alzheimer disease (AD) and cerebrovascular disease often coexist with advanced age. Mounting evidence indicates that the presence of vascular disease and its risk factors increase the risk of AD, suggesting a potential overlap of the underlying pathophysiological mechanisms. In particular, atherosclerosis, endothelial dysfunction, and stiffening of central elastic arteries have been shown to associate with AD. Currently, there are no effective treatments for the cure and prevention of AD. Vascular risk factors are modifiable via either pharmacological or lifestyle intervention. In this regard, habitual aerobic exercise is increasingly recognized for its benefits on brain structure and cognitive function. Considering the well-established benefits of regular aerobic exercise on vascular health, exercise-related improvements in brain structure and cognitive function may be mediated by vascular adaptations. In this review, we will present the current evidence for the physiological mechanisms by which vascular health alters the structural and functional integrity of the aging brain and how improvements in vascular health, via regular aerobic exercise, potentially benefits cognitive function.
PET Recycling by Diethylene Glycol‐Diethanol Amine Binary Mixture and Application of Product in Rigid Polyurethane Foam Formulation (2007)

Polyethylene terephthalate (PET) wastes were depolymerized by diethylene glycol (DEG)‐diethanol amine (DEA) binary mixtures as a solvent system in various DEG:DEA ratios and sodium hydroxide as the trans‐esterification catalyst. The obtained product was vacuum filtered for separation and characterization of resulting phases by using spectroscopic and chromatographic techniques. Liquid phase of recyclate was an OH containing product and was used as a portion of polyol content, being compared with virgin polyol in rigid polyurethane foam formulation. Keywords: polyethylene terephthalatepolyurethane foamrecycletrans‐esterificationdiethylene glycoldiethanol amine