gebhart/patrepeval huggingface dataset:
Efficient graph-based V2V free space fusion (2017)

A necessary prerequisite for future driver assistance systems as well as automated driving is a suitable and accurate representation of the environment around the vehicle with a sufficient range. To extend the range of the environment representation, sharing the environment detections of multiple vehicles via vehicle-to-vehicle (V2V) communication is a promising approach. In this paper, we present a method to fuse shared free space detections from multiple vehicles. The detections are represented as Parametric Free Space (PFS) maps, which are especially suitable for real-time radio V2V-transmission due to their compactness. A graph-based algorithm to fuse PFS maps is proposed that solves possible contradictions between the maps and incorporates the maps' uncertainty attributes. By solely operating on the contour, the fusion can be carried out by a simple path search in a fusion graph that is constructed from the maps. This results in an efficient method that finds the fusion result within few iterations. To account for possible errors in the relative poses between the PFS maps, we furthermore present an adapted Iterative Closest Point (ICP) matching to align the maps before the fusion. Therein we employ a modified soft-assign scheme for robust outlier rejection, and incorporate the PFS maps' boundary orientation to improve the matching process. We show the capabilities of our method by presenting results on real test drive data.
Time-resolved electroluminescence of AlGaN-based light-emitting diodes with emission at 285 nm (2003)

We present a study on the time evolution of the electroluminescence (EL) spectra of AlGaN-based deep ultraviolet light-emitting diodes (LEDs) under pulsed current pumping. The EL spectra peaks at 285 nm and 330 nm are found to result from recombination involving band-to-band and free carriers to deep acceptor level transitions. The 330 nm long-wavelength transitions to deep acceptor levels in the p-AlGaN layer as well as the nonradiative processes significantly influence the LED internal quantum efficiency.
HIME: Efficient Headshot Image Super-Resolution with Multiple Exemplars (2022)

A promising direction for recovering the lost information in low-resolution headshot images is utilizing a set of high-resolution exemplars from the same identity. Complementary images in the reference set can improve the generated headshot quality across many different views and poses. However, it is challenging to make the best use of multiple exemplars: the quality and alignment of each exemplar cannot be guaranteed. Using low-quality and mismatched images as references will impair the output results. To overcome these issues, we propose an efficient Headshot Image Super-Resolution with Multiple Exemplars network (HIME) method. Compared with previous methods, our network can effectively handle the misalignment between the input and the reference without requiring facial priors and learn the aggregated reference set representation in an end-to-end manner. Furthermore, to reconstruct more detailed facial features, we propose a correlation loss that provides a rich representation of the local texture in a controllable spatial range. Experimental results demonstrate that the proposed framework not only has significantly fewer computation cost than recent exemplar-guided methods but also achieves better qualitative and quantitative performance.
Supplementary Table 2 from Androgen Receptor Gene Aberrations in Circulating Cell-Free DNA: Biomarkers of Therapeutic Resistance in Castration-Resistant Prostate Cancer (2023)

&lt;p&gt;Supplementary Table 2. Frequency of androgen receptor (AR) copy number variation stratified by systemic therapy at time of circulating cell-free DNA (cfDNA) collection&lt;/p&gt;
Finite-Sample Analysis of Decentralized Temporal-Difference Learning with Linear Function Approximation (2019)

Motivated by the emerging use of multi-agent reinforcement learning (MARL) in engineering applications such as networked robotics, swarming drones, and sensor networks, we investigate the policy evaluation problem in a fully decentralized setting, using temporal-difference (TD) learning with linear function approximation to handle large state spaces in practice. The goal of a group of agents is to collaboratively learn the value function of a given policy from locally private rewards observed in a shared environment, through exchanging local estimates with neighbors. Despite their simplicity and widespread use, our theoretical understanding of such decentralized TD learning algorithms remains limited. Existing results were obtained based on i.i.d. data samples, or by imposing an `additional' projection step to control the `gradient' bias incurred by the Markovian observations. In this paper, we provide a finite-sample analysis of the fully decentralized TD(0) learning under both i.i.d. as well as Markovian samples, and prove that all local estimates converge linearly to a small neighborhood of the optimum. The resultant error bounds are the first of its type---in the sense that they hold under the most practical assumptions ---which is made possible by means of a novel multi-step Lyapunov analysis.
Numerical Simulation of the Phase Separation of a Polymer-Polymer-Solvent Ternary System on a Heterogeneously Functionalized Substrate (2008)

The spinodal decomposition of a polymer-polymer-solvent ternary system was investigated in a 3-dimensional numerical model. The Cahn-Hilliard equation was employed to describe the free energy profile of the domain. A heterogeneously functionalized substrate was also implemented into the model to simulate the effect of substrate attraction. The mechanism of the morphology evolution was studied quantitatively. The well established linear relationship of the characteristic length, R(t) with t1/3 can be observed in the simulation results. The compatibility of the result pattern and the pattern on the substrate was measured by a scalar, Cs. The influence of the solvent concentration on the refinement of the result pattern was studied in this work. A critical time can be observed from the evolution of the value of Cs. The morphology evolution of a system considering the solvent evaporation was also studied.
ChemInform Abstract: TRIGONAL‐BIPYRAMIDAL BIS(NEOPENTYLIDENE), NEOPENTYLIDENE/ETHYLENE, AND BIS(ETHYLENE) COMPLEXES OF TANTALUM AND HOW THEY REACT WITH ETHYLENE. A CATALYST FOR RAPIDLY DIMERIZING ETHYLENE TO 1‐BUTENE (1982)

Abstract Bei Zers. von Chloro‐tetraneopentyltantal bei 0°C in Gegenwart von PMe3 bildet sich der Komplex (Ia), der mit Li‐alkylverbindungen zu den Derivaten (Ib) und (Ic) reagiert.
On Scheduling for Minimizing End-to-End Buffer Usage over Multihop Wireless Networks (2010)

While there has been much progress in designing backpressure based stabilizing algorithms for multihop wireless networks, end-to-end performance (e.g., end-to-end buffer usage) results have not been as forthcoming. In this paper, we study the end-to-end buffer usage (sum of buffer utilization along a flow path) over a network with general topology and with fixed, loop-free routes using a large-deviations approach. We first derive bounds on the best performance that any scheduling algorithm can achieve. Based on the intuition from the bounds, we propose a class of (backpressure-like) scheduling algorithms called ¿ß-algorithms. We show that the parameters ¿ and ß can be chosen such that the system under the ¿ß-algorithm performs arbitrarily closely to the best possible scheduler (formally the decay rate function for end-to-end buffer overflow is shown to be arbitrarily close to optimal in the large-buffer regime). We also develop variants which have the same asymptotic optimality property, and also provide good performance in the small-buffer regime. Our results are substantiated using both analysis and simulation.
A cyclic MUX-DMUX photonic cross-connect architecture for transparent waveband optical networks (2004)

A novel photonic cross-connect (PXC) configuration with cyclic multiplexers and demultiplexers (DMUXs) is proposed for realizing dynamic switching and transparent add-drop in waveband dense wavelength-division-multiplexed networks. The PXC architecture allows for a flexible operation while maintaining low optical losses for express wavebands and add-drop wavelengths. The drop functionality of this architecture is demonstrated using an integrated cyclic optical DMUX and four 10-Gb/s PIN receivers with an average receiver sensitivity of -34 dBm as a compact and cost-effective solution.
Flavopiridol causes cell cycle inhibition and demonstrates anti-cancer activity in anaplastic thyroid cancer models (2020)

Anaplastic thyroid cancer (ATC) is a rare, but nearly uniformly fatal disease that is typically resistant to chemotherapy and radiation. Alternative strategies to target this cancer at a molecular level are necessary in order to improve dismal outcomes for ATC patients. We examined the effects of flavopiridol, a CDK inhibitor, in a panel of ATC cell lines. When cell lines were treated over a ten-point concentration range, CAL62, KMH2 and BHT-101 cell lines had a sub micromolar half-maximal inhibitory concentration, while no effect was seen in the non-cancerous cell line IMR-90. Flavopiridol treatment resulted in decreased levels of the cell cycle proteins CDK9 and MCL1, and induced cell cycle arrest. Flavopiridol also decreased the in vitro ability of ATC cells to form colonies and impeded migration using a transwell migration assay. In vivo, flavopiridol decreased tumor weight and tumor volume over time in a patient-derived xenograft model of ATC. Given the observed in vitro and in vivo activity, flavopiridol warrants further investigation for treatment of ATC.
How to Achieve World-Leading Energy Efficiency using 22FDX with Adaptive Body Biasing on an Arm Cortex-M4 IoT SoC (2019)

Adaptive body biasing is a technique to reduce detrimental effects on performance and leakage implied by both process variability and operating conditions in FDSOI technologies. Forward body biasing, optimally applied over all process corners and operating conditions, achieves performance comparable to the fastest unbiased operation while not increasing leakage over the worst unbiased leakage condition. This method of corner tightening is exemplified on an Arm Cortex-M4F MCU implementation in GLOBALFOUNDRIES 22FDX <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> technology with 84kB SRAM and 100MHz performance with 6.88µW/MHz overall power consumption. Racyics’ adaptive body biasing enables LVT devices at 0.50V ULV conditions, to meet the tough leakage power constraints of IoT devices.
A Conversation with Prof. Chad Mirkin: Nanomaterials Architect (2009)

[Traditional chemists] had to take what was available to them, and then apply their really neat, new techniques to ask and to answer questions, whereas I could pick a system and make it and try to design what I thought was the perfect molecular system, or materials-based system, for asking and answering key questions in materials science.
Application of Body Composition Monitoring to Peritoneal Dialysis Patients (2009)

Assessment of body fluids in peritoneal dialysis is an important issue in the treatment of renal failure. Overhydration is related with hypertension and left ventricular hypertrophy and dehydration leads to hypotension and reduction of residual renal function. Bioimpedance analysis (BIA) provides objective information in assessment of hydration status of the patients. In the past BIA was not widely used in patients undergoing peritoneal dialysis. Our aim was to estimate the status of hydration in our peritoneal dialysis population by body composition monitoring (BCM) device to modify our pharmacological and dialysis policy. We used a Fresenius Body Composition Monitor, a whole-body bioimpedance spectroscopy (50 frequencies, 5-1,000 kHz ), to assess the body composition of 97 patients on peritoneal dialysis in our center. The patients were subjected to a physical examination every three months: We measured body weight, 24 h diuresis and performed a BIA session. BIA measurements were repeated according to different clinical situations. Every patient underwent BIA at least on two different occasions. Our preliminary results have found a strict correlation between weight increase or decrease and the results (total body water, extracellular water, lean mass index) shown by BCM. Modifications of therapy in patients dehydrated restored a satisfying amount of diuresis. Hypertensive overhydrated patients changed their scheduled treatment improving their blood pressure and achieving a lower body weight. Bio impedance analysis is the most reliable, repetitive, not invasive, simple, portable and relatively inexpensive technique to assess the fluid status of a dialysis patient is bioimpedance.
E. coli SbcCD and RecA Control Chromosomal Rearrangement Induced by an Interrupted Palindrome (2010)

Survival and genome stability are critical characteristics of healthy cells. DNA palindromes pose a threat to genome stability and have been shown to participate in a reaction leading to the formation of inverted chromosome duplications centered around themselves. There is considerable interest in the mechanism of this rearrangement given its likely contribution to genome instability in cancer cells. This study shows that formation of large inverted chromosome duplications can be observed in the chromosome of Escherichia coli. They are formed at the site of a 246 bp interrupted DNA palindrome in the absence of the hairpin nuclease SbcCD and the recombination protein RecA. The genetic requirements for this spontaneous rearrangement are consistent with a pathway involving DNA degradation and hairpin formation, as opposed to a cruciform cleavage pathway. Accordingly, the formation of palindrome-dependent hairpin intermediates can be induced by an adjacent DNA double-stand break.
Tumour epithelial vimentin expression and outcome of pancreatic ductal adenocarcinomas (2011)

The presence of vimentin-expressing tumour epithelial cells in surgically resected pancreatic adenocarcinomas independently predicted a shorter postsurgical survival.
Analgesic Effect of a Mixed T-Type Channel Inhibitor/CB2 Receptor Agonist (2013)

Our work shows that both T-type channels as well as CB2 receptors play a role in the antinociceptive action of NMP-181, and also provides a novel avenue for suppressing chronic pain through novel mixed T-type/cannabinoid receptor ligands.
Polymer-Supported Organic Catalysts (2003)

ADVERTISEMENT RETURN TO ISSUEArticleNEXTPolymer-Supported Organic Catalysts†Maurizio Benaglia, Alessandra Puglisi, and Franco CozziView Author Information Dipartimento di Chimica Organica e Industriale, CNR-ISTM, and Centro di Eccellenza CISI, Via Golgi 19, I-20133 Milano, Italy Cite this: Chem. Rev. 2003, 103, 9, 3401–3430Publication Date (Web):July 4, 2003Publication History Received17 February 2003Revised5 May 2003Published online4 July 2003Published inissue 1 September 2003https://doi.org/10.1021/cr010440oCopyright © 2003 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views9513Altmetric-Citations680LEARN 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 Read OnlinePDF (599 KB) Get e-AlertscloseSUBJECTS:Aromatic compounds,Catalysts,Hydrocarbons,Polymers,Recycling Get e-Alerts
Performance of Corrosion Inhibitors at High CO2 Pressures (2008)

The objective of this study was to evaluate the performance of two corrosion inhibitors (CI-A and CI-B) under conditions similar to the second PTT’s offshore pipeline. The experiments were carried out in flow-loop system, 36 m long, 10.16 cm diameter at 10.5 and 14 bar of carbon dioxide pressure, a temperature at 50°C. The performances of corrosion inhibitors were examined under conditions of superficial liquid velocity of 0.03 m/s and gas velocities of 6, 8 and 10 m/s in 0 and 3 degree inclinations using the ER probe and X65 weight-loss coupons for corrosion rate measurement at the top and bottom of pipe. According to flow characteristics, it was found that the smooth and wavy stratified flow occurred in 0 degree. For 3 degree inclination, wavy stratified flow with big waves was dominantly presented for all conditions. Corrosion inhibitor B showed a better performance than inhibitor A in all cases. For inhibitor B, the target corrosion rates of less than 0.1 mm/yr were achieved in all conditions with 50 ppm of inhibitor concentration whereas the amount of 75 ppm inhibitor concentration was required for CI-A. The color, turbidity, and emulsion tendency with corrosion inhibitors will be also discussed in this paper.
Property Improvement of Additively Manufactured Ti64 by Heat Treatment Characterized by In Situ High Temperature EBSD and Neutron Diffraction (2021)

Among various off-equilibrium microstructures of additively manufactured Ti-6Al-4V alloy, electron beam powder bed fusion, in which three dimensional metallic objects are fabricated by melting the ingredient powder materials layer by layer on a pre-heated bed, results in a specimen that is nearly free of the preferred orientation of the α-Ti phase as well as a low beta phase fraction of ~1 wt%. However, when further heat treatment of up to 1050 °C was applied to the material in our previous study, a strong texture aligning the hexagonal basal plane of α phase with the build direction and about 6% β phase appeared at room temperature. In this study, to understand the mechanism of this heat treatment, the grain level microstructure of the additively manufactured Ti-6Al-4V was investigated using in situ high temperature EBSD up to 1000 °C, which allows the tracking of individual grains during a heat cycle. As a result, we found a random texture originating from the fine grains in the initial material and observed a significant suppression of α phase nucleation in the slow cooling after heating to 950 °C within the α and β dual phase regime but close to the the β-transus temperature at ~980 °C, which led to a coarse microstructure. Furthermore, the texture resulting from phase transformation of the additively manufactured Ti-6Al-4V assuming nucleation at the grain boundaries was modeled, using the double Burgers orientation relationship for the first time. The model successfully reproduced the measured texture, suggesting that the texture enhancement of the α phase by the additional heat treatment derives also from the variant selection during the phase transformation and nucleation on grain boundaries.
Synthesis and Activity of Histidine-Containing Catalytic Peptide Dendrimers (2006)

Peptide dendrimers built by iteration of the diamino acid dendron Dap-His-Ser (His = histidine, Ser = Serine, Dap = diamino propionic acid) display a strong positive dendritic effect for the catalytic hydrolysis of 8-acyloxypyrene 1,3,6-trisulfonates, which proceeds with enzyme-like kinetics in aqueous medium (Delort, E.; Darbre, T.; Reymond, J.-L. J. Am. Chem. Soc. 2004, 126, 15642-3). Thirty-two mutants of the original third generation dendrimer A3 ((Ac-His-Ser)8(Dap-His-Ser)4(Dap-His-Ser)2Dap-His-Ser-NH2) were prepared by manual synthesis or by automated synthesis with use of a Chemspeed PSW1100 peptide synthesizer. Dendrimer catalysis was specific for 8-acyloxypyrene 1,3,6-trisulfonates, and there was no activity with other types of esters. While dendrimers with hydrophobic residues at the core and histidine residues at the surface only showed weak activity, exchanging serine residues in dendrimer A3 against alanine (A3A), beta-alanine (A3B), or threonine (A3C) improved catalytic efficiency. Substrate binding was correlated with the total number of histidines per dendrimer, with an average of three histidines per substrate binding site. The catalytic rate constant kcat depended on the placement of histidines within the dendrimers and the nature of the other amino acid residues. The fastest catalyst was the threonine mutant A3C ((Ac-His-Thr)8(Dap-His-Thr)4(Dap-His-Thr)2Dap-His-Thr-NH2), with kcat = 1.3 min(-1), kcat/k(uncat) = 90'000, KM = 160 microM for 8-bytyryloxypyrene 1,3,6-trisulfonate, corresponding to a rate acceleration of 18'000 per catalytic site and a 5-fold improvement over the original sequence A3.
Expression of β-galactosidase controlled by a nitrogenase promoter in stem nodules of Aeschynomene scabra (1984)

A 365-base-pair (bp) DNA fragment, containing the promoter region of the nitrogenase reductase (nifH) gene from stem Rhizobium BTAi1, has been isolated and sequenced. The transcription initiation sites were localized at positions 152 (major initiation) and 114 (minor initiation) nucleotides upstream of the translation initiation codon. The 200-bp nucleotide sequence upstream of the nifH structural gene shows substantial homology to the corresponding nifH regions of cowpea Rhizobium (100%), Parasponia Rhizobium (89%), and Rhizobium japonicum (88%). The nifH promoter region of stem Rhizobium BTAi1 was fused to the lacZ gene of Escherichia coli. The fusion and a 1.6-kilobase DNA specifying neomycin phosphotransferase were inserted into a 3,4-kilobase fragment of stem Rhizobium chromosome, and the resulting construct was placed on a mobilizable vector, pREV1000. Stem Rhizobium transconjugants resistant to kanamycin were found to contain the nifH promoter region-lacZ fusion linked to the neomycin phosphotransferase gene at the site of chromosomal homology. Analysis of the DNA from stable transconjugants showed integration of a single copy of these sequences into the chromosome by a double-reciprocal crossover event. The transconjugants formed nitrogen-fixing nodules, indicating that the insertion occurred in a "nonessential" region of the stem Rhizobium chromosome. Transconjugant strain BTAi1000 grows on beta-galactosidase indicator plates under aerobic conditions as white colonies, whereas under microaerobic conditions (97% N(2)/3% O(2)), which derepress nitrogenase, the colonies turn blue within 15-24 hr. beta-Galactosidase activity in derepressed cultures of BTAi1000 showed a 200-fold increase in comparison to the wild-type strain, whereas stem nodules formed by BTAi1000 exhibited 15- to 20-fold higher beta-galactosidase values than wild-type nodules. Nitrogenase promoter-dependent expression of beta-galactosidase in stem nodules was inhibited by fixed nitrogen, suggesting that the nifH promoter-lacZ fusion is controlled coordinately in trans with the native nif region.