gebhart/patrepeval huggingface dataset:
A Method For Automated Drone Viewpoints to Support Remote Robot Manipulation (2022)

Drones can provide a minimally-constrained adapting camera view to support robot telemanipulation. Furthermore, the drone view can be automated to reduce the burden on the operator during teleoperation. However, existing approaches do not focus on two important aspects of using a drone as an automated view provider. The first is how the drone should select from a range of quality viewpoints within the workspace (e.g., opposite sides of an object). The second is how to compensate for unavoidable drone pose uncertainty in determining the viewpoint. In this paper, we provide a nonlinear optimization method that yields effective and adaptive drone viewpoints for telemanipulation with an articulated manipulator. Our first key idea is to use sparse human-in-the-loop input to toggle between multiple automatically-generated drone viewpoints. Our second key idea is to introduce optimization objectives that maintain a view of the manipulator while considering drone uncertainty and the impact on viewpoint occlusion and environment collisions. We provide an instantiation of our drone viewpoint method within a drone-manipulator remote teleoperation system. Finally, we provide an initial validation of our method in tasks where we complete common household and industrial manipulations.
Properties of plasma assisted chemical vapor deposited coatings of titanium boride on Ti–6Al–4V alloy substrates (1992)

Coatings prepared in a radio-frequency-plasma (plasma assisted chemical vapor deposition) reactor employing in situ laser diagnostics have been tested and characterized. Detailed characterization studies are important to relate gas phase laser diagnostic studies and concurrent heterogeneous modeling efforts to coating characteristics. Establishing how deposition conditions are correlated with coating properties is expected to provide needed methodology for scale up of applications in the hard face protective coating area. After a brief discussion of preparation conditions and mechanical test results, we present results of chemical and physical measurements on these coatings. Measurement techniques include x-ray diffraction, Dektak surface roughness, scanning tunneling microscopy, scanning electron microscopy, and SEI, Auger electron spectroscopy, x-ray photoelectron spectroscopy, and Rutherford backscattering spectroscopy. The coatings (∼20 μm thick) are very hard (40 GPa at depths over 100 nm), adherent (60 N on scratch test), and sand erosion resistant (≳40× as durable as Ti-6Al-4V). They are highly oriented with the c axis (hexagonal-close-packed) normal to the coating surface, rough (∼1 μm), and off-stoichiometry (TiB2.2).
Binary Shape Matching (2014)

This chapter discusses shape matching based on binary images. The use of binary images for shape matching has advantages because morphology functions can be used prior to shape matching to modify the binary image resulting for better results. Binary shape matching is an efficient and effective method to determine the center of mass of matched objects from its shape. By using shape matching, sorting and inspection of objects are possible. The shape of the objects can be classified (sorted) and defects can be determined by comparison with a reference image (inspection). An example of finding objects using binary shape matching is discussed in detail. Due to the requirement that binary shape matching operates on binary images, all target images need to be converted to binary. In order to preserve the original image, additional image memory can be allocated and connected to the image destination input of Vision Assistant.
Cooperative Action Branching Deep Reinforcement Learning for Uplink Power Control (2023)

Wireless networks are expected to move towards self-sustaining networks in 6G, where machine learning plays a critical role in maintaining high performance in dynamically changing environment. It is expected that in such environment machine learning algorithms need to be able to optimize multiple correlated network parameters simultaneously. One example of such correlated parameters, that exist already in 5G, are outer-loop power control (OLPC) parameters. In this paper we show how a single double deep Q network (DDQN) can optimize both OLPC parameters, <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$P_{0}$</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\alpha_{pl}$</tex> , simultaneously with two output branch dimensions. In order to tackle multi-agent problems, caused by interference, we describe how multiple machine learning agents have to cooperate to optimize the performance of the whole network. Extensive simulation studies confirm that provided reinforcement learning methods can outperform the traditional way of setting OLPC parameters, where global sub-optimal parametrization is hand-picked. Because cooperating agents learned to discriminate some cells to maximize overall throughput, we additionally experiment methods that equalize the performance between learning agents. Thus, it can be envisioned that the introduced methods can be harnessed to learn also other combinations of multiple simultaneous optimization actions taken in the future 6G networks.
IL-27-producing B cells synergize with IFNγ to promote IgG2a and IgG1 antibody responses (2020)

Abstract How B cells integrate innate receptor and adaptive T cell signals in the class-switched antibody response needs be better understood. By using cytokine gene knockout and reporter mice, in vitro B cell cultures and single-cell analyses, we have identified a subset of B cells that produces IL-27 as signature cytokine upon priming by TLR ligands, which up-regulate CD40 expression, and exposure to Tfh cell stimuli CD154 and IL-21. B cell IL-27 induction depends on NF-kB activated by linear ubiquitin assembly complexes and up-regulated Baft3 transcription factor, which are recruited to the Il27p28 locus, as made accessible by CD154 and IL-21 stimulation. IL-27-producing B cells are bystander B cells that are inefficient in secreting antibodies, but express high levels of adhesion molecules which engage other activated B cells. Together with IFNg, they boost proliferation, survival and class-switching to IgG2a of B cells stimulated with CD154 and IL-21. Accordingly, mice with B cell-specific ablation of IL-27 and IFNg receptors display severe defects in germinal center B cell and plasma cell differentiation, leading to abrogation of IgG2a and markedly reduced IgG1 responses. Thus, IL-27-producing B cells function as “helper” cells to promote differentiation of antigen-specific B cells for optimal IgG responses. As such, they play a critical role in the production of effective anti-viral antibodies and, possibly, modulation of anti-tumoral immunity.
Emergency Oral Anticoagulant Reversal: The Relative Efficacy of Infusions of Fresh Frozen Plasma and Clotting Factor Concentrate on Correction of the Coagulopathy (1997)

Haemorrhage, including intracranial bleeding, is a common, potentially lethal complication of warfarin therapy and rapid and complete reversal of anticoagulation may be life-saving. Fresh frozen plasma (FFP) and vitamin K are most frequently administered. Because of the variable content of vitamin K-dependent clotting factors in FFP, and the effects of dilution, the efficacy of this approach is open to doubt. We have therefore compared the effects of FFP and clotting factor concentrates on the INRs and clotting factor levels of orally anticoagulated subjects requiring rapid correction of their haemostatic defect. In many, the pre-treatment INR was considered to be dangerously above the target therapeutic range. In the 12 patients given FFP, the INR did not completely correct (range 1.6-3.8, mean 2.3) indicating an ongoing anticoagulated state in all. In contrast, the INR in 29 subjects given clotting factor concentrates was completely corrected in 28 (range 0.9-3.8, mean 1.3). Following treatment, marked differences were observed in clotting factor IX levels between the two groups. The median factor IX level was 19 u/dl (range 10-63) following FFP infusion and 68.5 u/dl (range 31-111) following concentrate. In FFP treated patients, poorer responses were also observed for each of the other vitamin K-dependent clotting factors but these were less marked than for factor IX, which was present in low concentrations in some batches of FFP. Thus, haemostatically effective levels of factor IX cannot be achieved, in most instances, by the conventional use of FFP in patients requiring reversal of their anticoagulant therapy. Clotting factor concentrates are the only effective option where complete and immediate correction of the coagulation defect is indicated in orally anticoagulated patients with life or limb-threatening haemorrhage.
ChemInform Abstract: SYNTHESIS OF OPTICALLY PURE ENKEPHALIN ANALOG, (D‐ALA2, LEU5‐OL)ENKEPHALIN, USING CHIRAL β‐LACTAMS AS SYNTHETIC INTERMEDIATES (1982)

Abstract Auf dem im Formelschema angegebene‐n Weg werden aus den Iminen (I) bzw. (VI) die Lactame (V) bzw. (XI) erhalten, die zum Bis‐lactäm‐dipeptid (XII) gekoppelt werden.
The final report of a phase I trial of surgical resection with biodegradable carmustine (BCNU) wafer placement followed by vaccination with dendritic cells pulsed with tumor lysate for patients with glioblastoma. (2012)

2084 Background: Our prior immunotherapy trials demonstrated efficacy in generating a tumor specific immune response in malignant glioma and the potential for high tumor-specific toxicity and sustained tumoricidal activity. Immunotherapy may synergize with chemotherapy and biodegradable carmustine (BCNU) wafers and have a modest impact to extend overall survival. We exploited this synergistic effect to maintain a cytotoxic environment around the tumor milieu, and this is a presentation of the final results of our clinical trial. Methods: Patients with glioblastoma were eligible after maximal resection with biodegradable carmustine (BCNU) wafer placement. Screening leukapheresis was used to isolate mononuclear cells which were differentiated into dendritic cells, pulsed with tumor lysate, and then 3 intradermal vaccines administered at 2-week intervals. Patients continued systemic chemotherapy after vaccine or at progression. Results: Twenty three patient with glioblastoma received therapy including 8 with newly diagnosed disease (35%) and 15 with recurrent disease (65%) were evaluable. Immune response data is available for 20/23 patients although survival data is present for all. One grade 3 SAE of fever and chills was noted otherwise therapy was well tolerated. Within the newly diagnosed GBM cohort the median overall survival (OS) was 25.5 months (15,31+), and within the recurrent GBM cohort, the median OS was 16 months (8,23+). Among the recurrent GBM an increase of &gt;1.5 X baseline interferon gamma production post vaccination was associated with a prolonged median OS 22 months (8,40) in 4/12 patients versus 17 months (9,27) in 8/12 patients. Conclusions: We were able to generate an immune response in 25% of patients which is lower than what we have seen in previous trials and suggests a limited synergy with local control. However, within the recurrent GBM cohort we did find prolonged survival in both groups with an increased survival noted in immune responders demonstrating the potential for this therapy.
Bioartificial dextran and poly[ethylene‐<i>co</i>‐(vinyl alcohol)] hybrid sponges as support for proteins (2005)

Abstract A biological–synthetic hybrid material was prepared as a support for proteinic molecules. To control the conformational stability and ‘vitality’ of the entrapped compound, an enzyme, which catalyses a chemical reaction, was chosen. The physical immobilisation of α‐amylase on a novel biological–synthetic hybrid material was realised using a synthetic (poly[ethylene‐ co ‐(vinyl alcohol)]) and a biological (dextran) component. The supports were obtained in the form of porous sponges using the phase inversion process. The kinetic parameters of enzymatic hydrolysis of soluble starch were obtained by determining the maltose (reaction product) concentration in the test solution by a spectrophotometric method. A high amount of enzyme (10 and 15 mg per g of polymer matrix) was successfully entrapped in the polymer support and a rather good enzyme activity of entrapped α‐amylase and a constant activity for repeated use, compared with native α‐amylase, were observed. The results obtained clearly indicated that the bioartificial polymer sponges, showing an immobilisation of α‐amylase with maintenance of the catalytic function of the enzyme, can be used as suitable supports for proteins. Copyright © 2005 Society of Chemical Industry
A time domain surface integral technique for mixed electromagnetic and circuit simulation (2003)

A full-wave time domain surface integral approach to coupled electromagnetic and circuit simulation is presented in this paper. In particular, non-linear circuit elements and effects of interference and crosstalk can be modeled in the time domain. The coupling of lumped elements to a surface integral formulation is detailed. Losses are modeled with an efficient recursive convolution.
Stripped Functionality Logic Locking With Hamming Distance-Based Restore Unit (SFLL-hd) – Unlocked (2019)

Logic locking is a technique that has received significant attention. It protects a hardware design netlist from a variety of hardware security threats, such as tampering, reverse-engineering, and piracy, stemming from untrusted chip foundry and end-users. This technique adds logic and inputs to a given design netlist to make sure that the locked design is functional only when a key is applied from the new inputs; an incorrect key makes the design produce incorrect outputs. The new inputs, referred to as the key inputs, are driven by a tamper-proof memory on the chip, which stores the secret key. Research in this field has shown that this technique, if not implemented properly, may be vulnerable to attacks that extract the key of logic locking. Recently, a logic locking technique called stripped functionality logic locking (SFLL) has been proposed and shown to withstand all known attacks in a provably secure manner. SFLL strips some functionality from the original design by corrupting its output corresponding to a number of “protected” input patterns. In one version of SFLL, referred to as SFLL-hd, these protected patterns are all of a certain hamming distance h to the key. The modified design is accompanied by additional logic that fixes the output for each protected input pattern only when the key is in the tamper-proof memory. In this paper, we present an attack that breaks SFLL-hd within a minute. Our attack exploits structural traces left behind in the locked design due to the functionality strip operation and is capable of identifying some of the protected patterns. We also present a theoretical framework that helps us develop two different techniques to complete our attack. In the first technique, we use the Gaussian elimination technique to solve a system of equations that we form based on k-identified protected patterns in O(k <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ) time in the best case, where k is the number of key bits in key. The second technique uses one identified protected pattern to query the oracle k times. In both techniques, we successfully recover the key from the protected pattern(s). We show that our attacks work on the SFLL-locked microprocessor design (more than 50 K gates) that the authors of SFLL made available to the public; we extract the 256-bit key within a minute and reveal it in this paper. We also test our attacks on a few other SFLL-hd benchmarks provided by SFLL authors.
Switching of ionic conductivities in columnar liquid-crystalline anilinium salts: effects of alkyl chains, ammonium cations and counter anions on thermal properties and switching temperatures (2019)

Effects of molecular structures on the thermal switching behavior of ion conductivities for columnar anilinium liquid crystals have been examined.
Murine Gut Microbiota and Transcriptome Are Diet Dependent (2012)

FF shifted gut microbiota and structural integrity, oxidative stress, and immune function genes, presumably increasing vulnerability to disease in FF mice. Interrogation of microbial and host gene expression in FF neonates may offer new insight on how diet affects disease pathogenesis.
Optical Filter for Infrared Region Formed by Polymer Stabilized Cholesteric Liquid Crystals (2019)

We investigated the formation of optical filter for infrared region by using polymer stabilized cholesteric liquid crystals (PSCLCs) under UV irradiation conditions. The selective reflection band in infrared region in PSCLCs is expanded with the increase of UV irradiation energy, and the change of bandwidth shows the threshold characteristics for UV irradiation. The experimental results suggest that the reflection bandwidth of infrared region in PSCLCs is tunable by the UV irradiation based fabrication process. The simple polymerization technique can be applied to achieve the performance of optical filter for solar-ray in infrared regions for basis of smart windows.
Post Engine Test Characterization and Flight Test Experience of Self Sealing Ceramic Matrix Composites for Nozzle Seals in Gas Turbine Engines (2005)

The advancement of self-sealing ceramic matrix composites offers durability improvements in hot section components of gas turbine engines. These durability improvements come with no need for internal cooling and with reduced weight. Building on past material efforts, ceramic matrix composites based upon a silicon carbide or carbon fiber with a novel self-sealing matrix have been developed for gas turbine applications. The specific application being pursued on this effort is an F100-PW-229 nozzle seal. Ground engine testing has been completed that exceeds the full design life. The ground testing has demonstrated a significant durability improvement from the baseline metal design. Residual properties have been determined by extracting tensile and microstructural coupons from the ceramic matrix composite seal. This was done as a function of design life. Nondestructive interrogation was used as a guide in setting cutting diagrams. The results from this effort will be presented.
Challenges in Integration of MMC STATCOM with Battery Energy Storage for Wind Power Plants (2019)

As the conventional power plants are being replaced by renewable energy sources like wind and solar, large power plants based upon the renewable energy sources are expected to provide ancillary services and functionalities like voltage and frequency regulation, and to mitigate the variability of power supply. Thus, there is a need for the control of both active and reactive power generation from the plant. Wind power plants have limited controllability of active power due to their dependency upon the instantaneous wind conditions; while the reactive power should be locally compensated at the Point of Connection (PoC). This paper describes the application of a modular multilevel converter (MMC) static compensator (STATCOM) with Battery Energy Storage System (BESS) as an integrated solution to these requirements. Simulation results demonstrate the inertial as well as fast droop response for frequency control, while the voltage regulation is relatively slow process.
Comparing Circuit Connectivity Between All-Metal GDS Layouts. (2021)

Abstract not provided.
Concerns over interspecies transcriptional comparisons in mice and humans after trauma (2013)

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Characterization of Human Renal Stones with MDCT: Advantage of Dual Energy and Limitations Due to Respiratory Motion (2008)

Dual-energy CT attenuation values can be used to predict the chemical composition of stones in vitro. However, when slight motion is applied to renal stones during image acquisition, the values become significantly different from those obtained with no motion. Consequently, confusion arises in differentiating stone types. A perfect breath-hold has to be performed for in vivo use of attenuation value to discern stone type.
The Assignment of the 78/203meV Double Acceptor in GaAs to B&lt;sub&gt;As&lt;/sub&gt; Impurity Antisite Centers (1993)

Ga-rich GaAs shows two levels at (Esubv plus 78 meV) and (Esubv plus 203 meV) due to a He-like double acceptor. The consensus is that the defect responsible is the GasubAs antisite, but IR localized vibrational mode (LVM) measurements have also revealed the presence of BsubAs impurity antisites when the Fermi level EpsilonsubF is above (EsubV plus 203 meV), leading to an ambiguity. New photoluminescence analyses reveal the 78/203 meV defect in LEC GaAs containing boron but not in boron-free Bridgman GaAs. Reversible photo-induced changes of the strengths of the absorption from the electronic 78/203 meV levels and the LVM line are consistent with their assignments to BsubAshigh0, BsubAshigh- and BsubAshigh2- respectively. Combined DLTS measurements, used to determine the concentration of the 78 meV level, and IR measurements led to an estimated effective charge of the BsubAs LVM of Eta about 2.5 e. The BsubAs defect appears to be bistable and to give rise to a resonant mode at 225 cmhig h-1, revealed by Raman scattering, when EtasubF smaller than (EsubV plus 78 meV).
Optical design and performance of the NGST wavefront control testbed (2003)

The NGST Wavefront Control Testbed (WCT) is a joint technology program managed by the Goddard Space Flight Center (GSFC) and the Jet Propulsion Laboratory (JPL) for the purpose of developing technologies relevant to the NGST optical system. The WCT provides a flexible testing environment that supports the development of wavefront sensing and control algorithms that may be used to align and control a segmented optical system. WCT is a modular system consisting of a Source Module (SM), Telescope Simulator Module (TSM) and an Aft-Optics (AO) bench. The SM incorporates multiple sources, neutral density filters and bandpass filters to provide a customized point source for the TSM. The telescope simulator module contains a flip-in mirror that selects between a small deformable mirror and three actively controlled spherical mirror segments. The TSM is capable of delivering a wide range of aberrated, unaberrated, continuous and segmented wavefronts to the AO optical bench for analysis. The AO bench consists of a series of reflective and transmissive optics that images the exit pupil of the TSM onto a 349 actuator deformable mirror that is used for wavefront correction. A Fast Steering Mirror (FSM) may be inserted into the system (AO bench) to investigate image stability and to compensate for systematic jitter when operated in a closed loop mode. We will describe the optical design and performance of the WCT hardware and discuss the impact of environmental factors on system performance.
High-Sensitivity Bolometers from Self-Oriented Single-Walled Carbon Nanotube Composites (2011)

In this work, films of horizontally aligned single-walled carbon nanotubes were thermally and electrically characterized in order to determine the bolometric performance. An average thermal time constant of τ = 420 μs along with a temperature coefficient of resistance of TCR = -2.94% K(-1) were obtained. The maximum voltage responsivity and detectivity obtained were R(V) =230 V/W and D* = 1.22 × 10(8) cm Hz(1/2)/W, respectively. These values are higher than the maximum voltage responsivity (150 V/W) and maximum temperature coefficient of resistance (1.0% K(-1)) previously reported for carbon nanotube films at room temperature. The maximum detectivity was obtained at a frequency of operation of 1.25 kHz.