gebhart/patrepeval huggingface dataset:
Height and Facet Extraction from LiDAR Point Cloud for Automatic Creation of 3D Building Models (2019)

Three-dimensional models of buildings have a variety of applications, e.g., in urban planning, for making decision where to locate power lines, solar panels, cellular antennas, etc. Often, 3D models are created from a LiDAR point cloud, however, this presents three challenges. First, to generate maps at a nationwide scale or even for a large city, it is essential to effectively store and process the data. Second, there is a need to produce a compact representation of the result, to avoid representing each building as thousands of points. Third, it is often required to seamlessly integrate computed models with non-geospatial features of the geospatial entities.
3D migration velocity analysis for common image gathers in the reflection angle domain (2001)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 20013D migration velocity analysis for common image gathers in the reflection angle domainAuthors: Wei LiuAlexander M. PapoviciDimitri BevcBiondo BiondiWei Liu3DGeo Development Inc., Alexander M. Papovici3DGeo Development Inc., Dimitri Bevc3DGeo Development Inc., and Biondo BiondiStanford Universityhttps://doi.org/10.1190/1.1816778 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1816778FiguresReferencesRelatedDetailsCited byTarget-oriented velocity analysis using Marchenko-redatumed dataConstantin Mildner, Filippo Broggini, Johan O. A. Robertsson, Dirk-Jan van Manen, and Stewart Greenhalgh27 January 2017 | GEOPHYSICS, Vol. 82, No. 2Multicomponent joint migration velocity analysis in the angle domain for PP-waves and PS-wavesQizhen Du, Fang Li, Jing Ba, Yitong Zhu, and Bo Hou15 February 2012 | GEOPHYSICS, Vol. 77, No. 1Theory of 3-D angle gathers in wave-equation seismic imaging22 February 2011 | Journal of Petroleum Exploration and Production Technology, Vol. 1, No. 1Angle‐domain VSP reverse‐time migration and its applicationWenbo Sun and Sam Zandong Sun21 October 2010A Quadratic precision generalized nonlinear global optimization migration velocity inversion method26 June 2009 | Applied Geophysics, Vol. 6, No. 2Accurate imaging of complex salt features with narrow azimuth migrationM. M. Fliedner, S. Crawley, D. Bevc, and B. Biondi6 October 2006Fast model-based migration velocity analysis and reflector shape estimationWeihong Fei and George A. McMechan22 March 2005 | GEOPHYSICS, Vol. 70, No. 2Subsurface imaging of complex structures by reflection seismic data3D angle-domain common-image gathers for migration velocity analysisGeophysical Prospecting, Vol. 52, No. 6Angle‐domain common‐image gathers for migration velocity analysis by wavefield‐continuation imagingBiondo Biondi and William W. Symes27 September 2004 | GEOPHYSICS, Vol. 69, No. 5Common Angle Image Gathers Obtained from Gabordaubechies Beamlet Prestack Depth Migration31 May 2013 | Chinese Journal of Geophysics, Vol. 47, No. 5Theory of 3‐D angle gathers in wave‐equation imagingSergey Fomel3 January 2005Extracting angle domain information from migrated wavefieldXiao‐Bi Xie and Ru‐Shan Wu3 January 2005Wave‐equation migration velocity analysis beyond the Born approximationPaul Sava and Sergey Fomel3 January 2005 SEG Technical Program Expanded Abstracts 2001ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2001 Pages: 2135 publication data© 2001 Copyright © 2001 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 03 Jan 2005 CITATION INFORMATION Wei Liu, Alexander M. Papovici, Dimitri Bevc, and Biondo Biondi, (2001), "3D migration velocity analysis for common image gathers in the reflection angle domain," SEG Technical Program Expanded Abstracts : 885-888. https://doi.org/10.1190/1.1816778 Plain-Language Summary PDF DownloadLoading ...
Recrystallization of silicon amorphized by carbon implantation (1991)

Implanting (100) silicon substrates with 35 keV carbon ions at a dose of 1.5×1016 cm−2 causes Si to amorphize from the surface to a depth of 133±3 nm. Upon annealing at 800 °C the amorphized material recrystallizes to polycrystalline and highly defective single-crystal layers. An in situ annealing study of a cross-sectional transmission electron microscope specimen reveals that the minimum temperature needed to recrystallize the amorphous material is 725±25 °C. At this temperature grains that grow from the substrate surface dominate the recrystallization process leading to the formation of polycrystalline layer.
Towards a Complete Direct Hybrid Bonding D2W Integration Flow: Known-Good-Dies and Die Planarization Modules Development (2019)

Die-to-wafer stacking is very promising for the next 3DIC generation since it offers the ability to assemble several dies with small interconnection pitches. This paper proposes an overall integration scheme D2W HB process to reinforce its robustness and its economical relevance for microelectronics industry. Firstly, a KGD strategy was developed to be compatible with hybrid bonding. A successful D2W bonding was demonstrated with tested pads. Secondly, the development of the planarization of stacked dies is presented.
Phages and Immunomodulation (2017)

In the past years, the microbiome and its role in the pathophysiology of diseases have gained great interest. The progress of our knowledge in this field opens completely novel prospects for treating disorders, including those which are most challenging to medicine today. Of special interest are studies on the interactions of the microbiome with the immune system. Only recently has the presence of bacteriophages in the microbiome been highlighted, and their potential role in maintaining normal immunity has gained increasing attention. We summarize the available data pointing to the potential impact of phages in maintaining immunological homeostasis.
Effect of channel size on liquid‐liquid plug flow in small channels (2015)

The hydrodynamic properties of plug flow were investigated in small channels with 0.5‐, 1‐, and 2‐mm internal diameter, for an ionic liquid/aqueous two‐phase system with the aqueous phase forming the dispersed plugs. Bright field Particle Image Velocimetry combined with high‐speed imaging were used to obtain plug length, velocity, and film thickness, and to acquire velocity profiles within the plugs. Plug length decreased with mixture velocity, while for constant mixture velocity it increased with channel size. Plug velocity increased with increasing mixture velocity and channel size. The film thickness was predicted reasonably well for Ca > 0.08 by Taylor's (Taylor, J Fluid Mech. 1961;10(2):161–165) model. A fully developed laminar profile was established in the central region of the plugs. Circulation times in the plugs decreased with increasing channel size. Pressure drop was predicted reasonably well by a modified literature model, using a new correlation for the film thickness derived from experimental values. © 2015 American Institute of Chemical Engineers AIChE J, 62: 315–324, 2016
Codebook adaptation algorithm for a scene adaptive video coder (2002)

Proposes a codebook adaptation algorithm for very low bit rate, real-time video coding. Although adaptive codebook design has been studied in the past, its implementation at very low coding rates suitable for the MPEG4 standard remains significantly challenging. The coder uses a standard motion compensated predictor with DCT quantization. It is unique in that it uses a hybrid scalar/vector quantizer to code predictor residuals. Bits are dynamically allocated to minimize distortion in the current frame, and scalar quantized blocks are used to adapt the VQ codebook. A codebook adaptation algorithm is described which uses an "equidistortion principle" and a competitive learning algorithm to continuously adapt the codewords. This training algorithm results in an increased use of the more efficient vector quantizer and improved video quality.
Human Endogenous Retrovirus K (HML-2) Elements in the Plasma of People with Lymphoma and Breast Cancer (2008)

Actively replicating endogenous retroviruses entered the human genome millions of years ago and became a stable part of the inherited genetic material. They subsequently acquired multiple mutations, leading to the assumption that these viruses no longer replicate. However, certain human tumor cell lines have been shown to release endogenous retroviral particles. Here we show that RNA from human endogenous retrovirus K (HERV-K) (HML-2), a relatively recent entrant into the human genome, can be found in very high titers in the plasma of patients with lymphomas and breast cancer as measured by either reverse transcriptase PCR or nucleic acid sequence-based amplification. Further, these titers drop dramatically with cancer treatment. We also demonstrate the presence of reverse transcriptase and viral RNA in plasma fractions that contain both immature and correctly processed HERV-K (HML-2) Gag and envelope proteins. Finally, using immunoelectron microscopy, we show the presence of HERV-K (HML-2) virus-like particles in the plasma of lymphoma patients. Taken together, these findings demonstrate that elements of the endogenous retrovirus HERV-K (HML-2) can be found in the blood of modern-day humans with certain cancers.
Propionibacterium avidum: A Virulent Pathogen Causing Hip Periprosthetic Joint Infection (2017)

We describe the largest series of P. avidum PJI predominantly located in the hip. Phylogenetic similarity of our P. avidum strains to PJI strains isolated elsewhere suggests that these invasive lineages may be common.
Hepatocyte [<sup>3</sup>H]-palmitate uptake: effect of albumin surface charge modification (2001)

The role of plasma proteins on the cellular uptake of lipophilic substrates has perplexed investigators for many years. We tested the hypothesis that an ionic interaction between the protein-ligand complex and hepatocyte surface may be responsible for supplying more ligand to the cell for uptake. The surface-charged groups on albumin were modified to yield proteins having a range of isoelectric points (ALB, ALBs, ALBm, ALBe had values of 4.8-5.0, 4.5-4.7, 3.0-3.5, 8.4-8.6, respectively). [3H]-Palmitate uptake studies were performed with adult rat hepatocyte suspensions using similar unbound ligand fractions in the presence of the different binding proteins. Mass spectrometry, isoelectric focusing (pI), and heptane:water partitioning were used to determine protein molecular weight, pI, and protein-palmitate equilibrium binding constant, respectively. Hepatocyte [3H]-palmitate clearance in the presence of ALBs and ALBm were significantly lower (p < 0.05) than ALB, whereas [3H]-palmitate clearance in the presence of ALBe was significantly higher (p < 0.05) than ALB. The data were consistent with the notion that ionic interactions between extracellular protein-ligand complexes and the hepatocyte surface facilitate the uptake of long-chain fatty acids.
Molecularchaperones as HSF1-specific transcriptional repressors (1998)

The rapid yet transient transcriptional activation of heat shock genes is mediated by the reversible conversion of HSF1 from an inert negatively regulated monomer to a transcriptionally active DNA-binding trimer. During attenuation of the heat shock response, transcription of heat shock genes returns to basal levels and HSF1 reverts to an inert monomer. These events coincide with elevated levels of Hsp70 and other heat shock proteins (molecular chaperones). Here, we show that the molecular chaperone Hsp70 and the cochaperone Hdj1 interact directly with the transactivation domain of HSF1 and repress heat shock gene transcription. Overexpression of either chaperone represses the transcriptional activity of a transfected GAL4-HSF1 activation domain fusion protein and endogenous HSF1. As neither the activation of HSF1 DNA binding nor inducible phosphorylation of HSF1 was affected, the primary autoregulatory role of Hsp70 is to negatively regulate HSF1 transcriptional activity. These results reveal that the repression of heat shock gene transcription, which occurs during attenuation, is due to the association of Hsp70 with the HSF1 transactivation domain, thus providing a plausible explanation for the role of molecular chaperones in at least one key step in the autoregulation of the heat shock response.
Pattern and prevalence of substance use and dependence in two districts of Union Territory of Jammu & Kashmir (2021)

Our results indicate that RDS was a feasible and acceptable sampling method for recruiting 'difficult to reach 'participants like illicit substance users including IDUs. Our results further demonstrate that opioids are highly prevalent in Kashmir and heroin injection is not uncommon. All these findings call for attention from policy makers as opioids are one of the important contributors to mortality and morbidity related to substances.
Investigation of the Stationary Plasma Thruster (SPT-100) - Characteristics and thermal maps at the raised discharge power (1998)

In the paper the results of experimental and numerical investigations SPT-IOO of a nominal configuration, i.e. serially made under the operational designer documentation are adduced, working at discharge powers exceeding it nominal power (up to 3.4 kW) are presented. Are obtained voltagecurrent and thrust-power of the characteristic; the temperatures of a construction in steady-state thermal modes at discharge power of 3 kW are measured . The thermal analysis is performed; the results of thermal analysis satisfactorily will be agreed experiment. Based on results of experimental and computational investigations the conclusions are made, that in forced on discharge power up to 3 kW modes optimized on a magnetic field, the temperatures of a design do not leave for permissible limits; the thruster long duration is functionality up to discharge power, at least, 3 kW; predicted lifetime on erosion of isolator of an accelerating channel at discharge power of 3 kW ~ 2500 hours Introduction Experimental equipment
Low-cost vector map assisted navigation strategy for autonomous vehicle (2018)

Differential Global Positioning System (DGPS) is a crucial component in the perception system of todays autonomous vehicle (AV). Traditional navigation technique takes advantage of the accurate positioning of DGPS and high-definition (HD) map to facilitate path tracking. However, HD map occupies large storage space due to its extensive information on the detailed structure of the environment, which is extremely costly to deploy onto in-vehicle computing devices. This work proposes a low-cost vector map based navigation framework. By recording the vector map offline, the framework initializes an optimal global route by giving any starting and ending position on the map. During runtime, the computer filters the real-time positioning data from DGPS and tracks the planned path according to geometric rules. Besides, when the Lidar/vision subsystem detects any obstacles, the method dynamically adjusts the local path to realize obstacle avoidance. Demonstrated on an AV testing platform, the proposed method calculates the angle of the steering wheel and transmits the actual commands through CAN bus interface.
Variation in Fineness of Cement-Based Composites Containing Sugarcane Bagasse Ashes (2014)

This study is aimed to evaluate the effect of sugarcane bagasse ash fineness on the properties of cement-based composites. Three sugarcane bagasse ash contents (10, 20 and 30% by weight of cement) and three particle sizes of bagasse ash (particles less than 45, 75 and 150 μm) were used as a partial replacement for cement in mortar specimens with a constant water/cementitious ratio of 0.55. The pozzolanic strength activity test, compressive strength test and scanning electron microscope observations were conducted and compared. Test results indicated that the compressive strength decreased with the addition of sugarcane bagasse ash content increased. Addition of sugarcane bagasse ash to replace cement in cementitious composites could provide hydration and pozzolanic reaction, but it would still keep more rugged and some larger pores observed from the paste surface and resulted in the weaker microstructures and poorer properties in cementitious composites. In conclusion, the critical usage of sugarcane bagasse ash is 10 % with 45μm particles.
Zingiber officinale (Ginger)–an antiemetic for day case surgery (1993)

The effect of powdered ginger root was compared with metoclopramide and placebo. In a prospective, randomised, double-blind trial the incidence of postoperative nausea and vomiting was measured in 120 women presenting for elective laparoscopic gynaecological surgery on a day stay basis. The incidence of nausea and vomiting was similar in patients given metoclopramide and ginger (27% and 21%) and less than in those who received placebo (41%). The requirement for postoperative antiemetics was lower in those patients receiving ginger. The requirements for postoperative analgesia, recovery time and time until discharge were the same in all groups. There was no difference in the incidence of possible side effects such as sedation, abnormal movement, itch and visual disturbance between the three groups. Zingiber officinale is an effective and promising prophylactic antiemetic, which may be especially useful for day case surgery.
Auxiliary Particle Filtering-Based Estimation of Remaining Useful Life of IGBT (2017)

Insulated gate bipolar transistor (IGBT) has been widely used in diverse power electronics systems. As IGBT is one of the most vulnerable components in power electronics converter, remaining useful life (RUL) estimation of this switch has become highlight of the research in recent years. This RUL estimation helps in schedule maintenance based on health status of IGBT to avoid the unexpected failure of converters. However, there has been commonly a large variance in RUL estimation due to presence of random noise, which leads to erroneous result in IGBT prognosis. To reduce this variance in RUL estimation, particle filter methods including sequential importance sampling and sequential importance resampling have been employed recently. Still, these methods lead to nonnegligible estimation variance due to degeneracy and impoverishment of samples. In this paper, RUL estimation approach based on auxiliary particle filter (APF) is proposed. The proposed method will sufficiently reduce estimation variance by increasing dimensionality of samples as well as by sustaining diversity in samples. In addition, a simple slope-based method is proposed to identify the region when the degradation is evident in IGBT. An APF method is applied when the IGBTs under test enter this region. This step is able to reduce variation in RUL estimation and computation cost. The performance of the proposed RUL estimation method is theoretically and experimentally verified.
Co-designed radar-communication using linear frequency modulation waveform (2016)

The expansion of consumer and wireless devices has placed increasing demand on signal bandwidth. This increased demand on a finite resource is in turn driving interest in more efficient ways to use available bandwidth. One approach is through mixed modulation of existing waveforms to achieve complementary objectives. Historically, mixed modulated signals have been designed to include some degree of orthogonality between the different waveforms to preclude interference. Such approaches usually involve use of time division multiple access (TDMA) or code division multiple access (CDMA), or the use of orthogonal frequency division multiplexing. With the evolution of digital signal processing, another approach is mixed modulation through intended modulation on pulse (IMOP). In the past, IMOP was challenging due to both the obvious cross interference concerns and the limits of signal processing technology. However, advances in both digital electronics and signal processing have opened the door to re-exploring IMOP approaches.
5-Piperazinylalkyl-2(3H)-oxazolones with neuroleptic activity (1989)

A series of new 4-aryl-5-[omega-(4-aryl-1-piperazinyl)alkyl]-2(3H)- oxazolones was synthesized and tested for neuroleptic activity in mice and rats. Several compounds exhibited interesting neuroleptic activity with very low liability to the extrapyramidal side effects. In particular the activity of 4-(4-fluorophenyl)-5-[2-[4-(3,5-dichlorophenyl)-1- piperazinyl]ethyl]-2(3H)-oxazolone (14) was greater than that of butropipazone and fluanisone, while of the same order of that of chlorpromazine; however, the product showed a longer lasting activity and minor ability to produce catalepsy as compared with the reference drugs.
A phase shift controlled current-fed Quasi-Switched-Capacitor isolated dc/dc converter with GaN HEMTs for photovoltaic applications (2015)

This paper proposes a phase shift controlled isolated dc/dc converter for photovoltaic applications, which is composed of a current-fed half bridge and a Quasi-Switched-Capacitor (QSC) cell. The proposed converter employs phase shift control to realize a wide voltage regulation range, and features zero-voltage-switching on all the switches. Compared to traditional H-bridge and half bridge, the secondary side QSC circuit exhibits a higher boost ratio and reduced voltage stress on devices and transformer. The circuit structure, operation principles and soft-switching analysis of the converter are presented. A 1-kW gallium nitride device based circuit prototype is used to verify the circuit analysis. Both simulation and experimental results are presented.
[Lormetazepam in preoperative sleeplessness. Dose dependance of the effect and comparison with 100 mg pentobarbital (author's transl)]. (1979)

Lormetazepam (0.5, 1, 2, 4, 8 mg)--a new benzodiazepine--was tested versus Pentobarbital (100 mg) under double blind conditions on 240 preoperative inpatients for night-time sedative and side effects after acute oral intake. Results are based on p less than 0.05. Additionally p less than 0.125 in binomial-two-sample-tests was accepted. Lormetazepam shows dose dependent increase in hypnotic effects (e.g. reduction in sleep latency and number of awakenings, increase of total sleep duration), and side effects (e.g. dopiness, dizziness), but no relevant change in vital signs. About 0.5 mg of Lormetazepam are equivalent to 100 mg of Pentobarbital. 2 mg of Lormetazepam seem to be the optimum dose regarding the relation between hypnotic and side effects. In the view of anaesthesists Lormetazepam is preferable to Pentobarbital because of more favorable safety aspects.