gebhart/patrepeval huggingface dataset:
True myocardial motion tracking (1994)

Myocardial tagging is a powerful tool for the assessment of in-plane cardiac motion. However, for previous myocardial tagging techniques, the imaged slice is fixed with respect to the magnet coordinate system. Thus, images acquired at different heart phases do not always represent the same slice of the myocardium. A new myocardial tagging technique is presented, which takes the through-plane motion into consideration. It involves tagging of the desired myocardial slice and applying a subtraction imaging technique to image just that part of the myocardium. The examination time can be reduced considerably by the acquisition of two one-dimensionally tagged images. To increase the signal-to-noise ratio especially at later heart phases, variable imaging RF excitation flip angles are applied. To reduce motion artifacts a repetitive breathhold scheme was applied. In vivo results demonstrate that the tags can be accurately tracked within the entire heart period with a temporal resolution of 35 ms, even at a top basal level of the heart and right ventricle.
Supplementary Table 1 from Tumorigenic and Metastatic Activity of Human Thyroid Cancer Stem Cells (2023)

Supplementary Table 1 from Tumorigenic and Metastatic Activity of Human Thyroid Cancer Stem Cells
Online simultaneous localization and mapping of multiple sound sources and asynchronous microphone arrays (2016)

This paper presents an online method of simultaneous localization and mapping (SLAM) for estimating the positions of multiple moving sound sources and stationary robots and synchronizing microphone arrays attached to those robots. Since each robot with a microphone array can solely estimate the directions of sound sources, the two-dimensional source positions can be estimated from the source directions estimated by multiple robots using a triangulation method. In addition, sound mixtures can be separated accurately by regarding distributed microphone arrays as one big array. To perform these tasks, some methods have been proposed for localizing and synchronizing microphone arrays. These methods, however, can be used only if a single sound source exists because the time differences of arrival (TDOAs) between microphones are assumed to be directly observed. To overcome this limitation, we propose a unified state-space model that encodes the source and robot positions and the time offsets between microphone arrays in a latent space. Given the TDOAs and directions of arrival (DOAs) estimated by separating observed mixture sounds into source sounds, the latent variables are estimated jointly in an online manner using a FastSLAM2.0 algorithm that can deal with an unknown time-varying number of moving sound sources.
Elastic constants and tensile properties ofAl2OCby density functional calculations (2007)

${\mathrm{Al}}_{2}\mathrm{OC}$ is a compound that forms as a nanoscale grain-boundary crystalline film in silicon carbide ceramics, and is responsible for imparting high low-temperature toughness and high-temperature creep strength in these materials. The elastic properties and ultimate strengths properties of ${\mathrm{Al}}_{2}\mathrm{OC}$ are determined from first-principles calculations. The crystal structure of ${\mathrm{Al}}_{2}\mathrm{OC}$ was approximated by an optimized model based on the wurtzite structure. The full set of single-crystal elastic stiffness ${c}_{ij}$ was calculated, from which the polycrystalline elastic constants were obtained by using the Voigt-Reuss-Hill averaging scheme. The tensile properties and the ideal strength in $[001]$ direction of ${\mathrm{Al}}_{2}\mathrm{OC}$ were also computed and compared to those of $\mathrm{SiC}$, where it was found that indeed, ${\mathrm{Al}}_{2}\mathrm{OC}$ is the weaker and more brittle phase, supporting fracture mechanics expectations for $\mathrm{SiC}$ containing ${\mathrm{Al}}_{2}\mathrm{OC}$-type intergranular films.
Multi-rate short-seeking control of dual-actuator hard disk drives for computation saving (2005)

This paper is concerned with multi-rate shortseeking control for a dual-actuator hard disk drive (HDD). Multi-rate control has been proposed to reduce the real time computation in HDD servos, and it has been shown that in track following control of HDDs, computation can be saved greatly without performance degradation by using multi-rate controllers. In this paper, we propose a novel short-seeking control method for dual-actuator HDDs based on multi-rate track following control and initial value adjustment. This method, which utilizes the same multi-rate controllers and same servo structure as track following, adjusts the initial values of the track-following controller for short seeking. Real time computation is greatly saved in two ways: (1) computation is saved by multi-rate scheme; (2) initial value adjustment of the feedback controller makes the use of the feedforward controller and reference trajectory unnecessary, which implies no real time computation for feedforward control is needed. Simulation and experimental results verify the effectiveness of the proposed method.
Technology/Memory Co-Design and Co-Optimization Using E-Tree Interconnect (2023)

For on-chip SRAM, a major portion of delay and energy is contributed by the H-Tree interconnects. In this paper, we propose an E-Tree interconnect technology to minimize the H-Tree delay and energy overheads based on an efficient interconnect technology/memory co-design framework for nonuniform workloads. Various array- and interconnect-level design parameters are co-designed for optimal performance using three emerging interconnect materials with a realistic cell library.
Observing a volume rendered fetus within a pregnant patient (2002)

Augmented reality systems with see-through headmounted displays have been used primarily for applications that are possible with today's computational capabilities. We explore possibilities for a particular application-in-place, real-time 3D ultrasound visualization-without concern for such limitations. The question is not "How well could we currently visualize the fetus in real time," but "How well could we see the fetus if we had sufficient compute power?" Our video sequence shows a 3D fetus within a pregnant woman's abdomen-the way this would look to a HMD user. Technical problems in making the sequence are discussed. This experience exposed limitations of current augmented reality systems; it may help define the capabilities of future systems needed for applications as demanding as real-time medical visualization.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Laterally patterned bandstructure and surface-normal anisotropy in micromachined (001) InGaAs multiple quantum wells (2003)

We demonstrate that micromachining lattice-matched InGaAs quantum wells grown with barriers under tensile strain produces laterally patterned modifications to the semiconductor bandstructure and a large surface-normal optical anisotropy. The technique enables novel applications ranging from polarization modulators to quasi-phase matching to new piezoelectric materials.
Electronic vs. Steric effects of substituents on the intramolecular excimer fluorescence from dilute solutions of halogen‐substituted polystyrenes (1993)

Abstract Steady state fluorescence measurements in dilute solution have been performed for eight halogenated polystyrenes and for poly(2,5‐dimethylstyrene). The monomers for halogenated polymers are o‐X ‐styrene ( X = F, Cl, Br), m ‐fluorostyrene, p‐X ‐styrene, and p ‐chloro‐α‐methylstyrene. The position of the excimer band and the ratio of the intensities of the excimer and monomer fluorescence depend on the substitution. The results for poly( p ‐chloro‐α‐methylstyrene) and poly(2,5‐dimethylstyrene) can be rationalized by a conformational analysis that examines the preferred geometries for face‐to‐face complexes by rings bonded to chain atoms i and i + 2. The results for the other polymers cannot be explained by a conformational analysis. They appear to arise from a combination of factors that alter the electronic properties of the chromophore.
Supplementary Data from CD20-Targeted Therapy Ablates <i>De Novo</i> Antibody Response to Vaccination but Spares Preestablished Immunity (2023)

Supplementary Data from CD20-Targeted Therapy Ablates &lt;i&gt;De Novo&lt;/i&gt; Antibody Response to Vaccination but Spares Preestablished Immunity
Controlled release of singlet oxygen using diphenylanthracene functionalized polymer nanoparticles (2014)

Functionalized polymer nanoparticles react and store molecular oxygen for several weeks in the form of endoperoxides. On-demand controlled release of singlet oxygen by the particles is achieved by thermolysis.
Degradation Analysis of Blue Phosphorescent Organic Light Emitting Diode by Impedance Spectroscopy and Transient Electroluminescence Spectroscopy (2009)

We carried out degradation analysis of a blue phosphorescent organic light emitting diode by both impedance spectroscopy and transient electroluminescence (EL) spectroscopy. The number of semicircles observed in the Cole-Cole plot of the modulus became three to two after the device was operated for 567 hours. Considering the effective layer thickness of the initial and degraded devices did not change by degradation and combining the analysis of the Bode-plot of the imaginary part of the modulus, the relaxation times of emission layer and hole-blocking with electron transport layers changed to nearly the same value by the increase of the resistance of emission layer. Decay time of transient EL of the initial device was coincident with that of the degraded one. These phenomena suggest that no phosphorescence quenching sites are generated in the degraded device, but the number of the emission sites decrease by degradation.
Dynamic Edge Fabric EnvironmenT: Seamless and Automatic Switching among Resources at the Edge of IoT Network and Cloud (2019)

The number of IoT devices at the edge of the network is increasing rapidly. Data from IoT devices can be analysed locally at the edge, or they may be sent to the cloud. Currently, the decision to deploy a task for execution at the edge or in the cloud is not decided as the data are received. Instead the decision is usually based on pre-defined system design and corresponding assumptions about locality and connectivity. However, the mobile environment has rapid, sometimes unpredictable changes and requires a system that can dynamically adapt to these changes. An intelligent platform is required that can discover available resources (both nearby and in the cloud) and autonomously orchestrate a seamless and transparent task allocation at runtime to help the IoT devices achieve their best performance given the available resources. We propose a new platform, DEFT (Dynamic Edge-Fabric environmenT), that can automatically learn where best to execute each task based on real-time system status and task requirements, along with learned behavior from past performance of the available resources. The task allocation decision in this platform is powered by machine learning techniques such as regression models (linear, ridge, Lasso) and ensemble models (random forest, extra trees). We have implemented this platform on heterogeneous devices and run various IoT tasks on the devices. The results reveal that choosing proper machine learning approaches based on the tasks properties and priorities can significantly improve the overall performance of selecting resources (either from the edge or cloud) dynamically at runtime.
Enterovirus D68 detection in respiratory specimens: Association with severe disease (2017)

Molecular techniques increased the number of documented respiratory infections. In a substantial number of cases the causative agent remains undetected. Since August 2014, an increase in Enterovirus(EV)-D68 infections was reported. We aimed to investigate epidemiology and clinical relevance of EV-D68. From June to December 2014 and from September to December 2015, 803 and 847 respiratory specimens, respectively, were tested for respiratory viruses with a multiplex RT-PCR. This multiplex RT-PCR does not detect EV-D68. Therefore, 457 (2014) and 343 (2015) specimens with negative results were submitted to an EV-specific-RT-PCR. EV-positive specimens were tested with an EV-D68-specific-RT-PCR and genotyped. Eleven specimens of 2014 tested positive in the EV-specific-RT-PCR and of these seven were positive in the EV-D68-specific-RT-PCR. Typing confirmed these as EV-D68. Median age of EV-D68-positive patients was 3 years (1 month-91 years). Common symptoms included fever (n = 6, 86%), respiratory distress (n = 5, 71%), and cough (n = 4, 57%). All EV-D68-positive patients were admitted to hospital, 4 (57%) were admitted to intensive care units and 6 (86%) received oxygen. One patient suffered from acute flaccid paralysis. Seven specimens of 2015 were positive in the EV-specific-RT-PCR but negative in the EV-D68-specific-RT-PCR. In conclusion, use of an EV-specific-RT-PCR allowed us to detect EV-D68 circulation in autumn 2014 that was not detected by the multiplex RT-PCR and was associated with severe disease.
POWER7: IBM's next generation, balanced POWER server chip (2009)

Presents a collection of slides covering the following topics: Extreme multicore throughput; SMP scaling; 8-core high performance server chip; virtual machine; cloud computing; server evolution; cache hierarchy technology; memory subsystem; and off-chip signaling technology.
Analysis and Modeling of IEEE 802.11p Wireless Channel Characteristics in Domestic Radio Propagation Environments (2016)

본 논문에서는 IEEE 802.11p 표준을 기반으로 하는 WAVE(Wireless Access in Vehicular Environment) 통신 시스템의 V2I(Vehicle to Infrastructure)와 V2V(Vehicle to Vehicle) 무선채널 특성을 국내 도심 및 고속도로 환경에서 분석하고 이를 모델링한다. 이를 위해 국내 도심도로 및 고속도로에서의 전파 환경을 3차원 지리 정보시스템을 이용하여 모델링하고, 3차원 레이트레이싱 방법을 이용하여 무선채널 특성을 시뮬레이션 한다. 시뮬레이션 및 분석을 통해 도심도로와 고속도로에서 V2I와 V2V통신에서의 지연확산 특성과 라이시안 페이딩 특성을 분석하고 이를 바탕으로 일반도로에서 7탭 TDL(Tapped Delay Line)모델의 PDP(Power Delay Profile)와 고속도로에서 16탭 TDL모델의 PDP를 모델링 하였다. 제안된 채널 모델들은 국내 도심도로 및 고속도로 환경에서 IEEE 802.11p 통신 시스템의 성능을 평가하고 디자인 하는데 유용하게 사용될 수 있을 것이다.
Tethering system design for Dante II (2002)

Dante II is a tethered mobile robot designed for volcano exploration. It has 6 pantographic legs, and is a rappelling robot that uses a tether to support itself on steep terrain, just as a mountaineer uses a climbing rope. The tether is connected to a generator and satellite communication station located at the volcano's rim. The satellite station relays data to and from remotely located operators. This paper describes the issues faced in the design of the tethering system of Dante II, and the approach used to address these issues.
Long-Term Telomere Dynamics: Modest Increase of Cell Turnover in HIV-Infected Individuals Followed for up to 14 Years (1999)

To quantify the long-term dynamics of telomere lengths and the effect of HIV infection on lymphocyte turnover rates, we measured in a blinded study longitudinal samples from 6 individuals using a highly accurate method based on two-dimensional calibration of DNA sizes. For two uninfected controls followed 8 and 10 years the average telomeric terminal restriction fragment (TRF) shortening rate in peripheral blood mononuclear cells (PBMCs) was 50 and 60 bp/year, respectively, in agreement with previous measurements of cross-sectional samples. The TRF lengths of PBMCs from two slow progressors followed for 14 years declined by a rate of 120 +/-10 bp/year, i.e. 2-fold higher than the rate of TRF shortening for uninfected individuals. The rate of TRF shortening was higher in CD8 (140 +/-10 bp/year) than in CD4 (100 +/-10 bp/year) cells. The CD8 cell TRFs of the two fast progressors shortened faster (240 +/-10 bp/year) and the rate of CD4 cell TRF shortening in one of the fast progressors was 160 bp/year. These data suggest that HIV infection causes only a modest increase in the lymphocyte turnover which we speculate could be due to chronic activation of the immune system, and may not result in the exhaustion of its regenerative capacity and immunopathogenesis.
Acoustic Leak Survey of the Underground Potable Water System at a CONUS Army Installation (2006)

Abstract U. S. Army Corps of Engineers Engineer Research and Development Center, Construction Engineering Research Laboratory (ERDC-CERL), and Carlyle Consulting’s John Carlyle conducted a leak detection survey at a U.S. Army Installation. The thrust of the work was to acoustically survey all of the underground pipelines constituting the installation’s potable water distribution system and find any leaks. The results of the survey were that 6 leaks were discovered in the main lines, 63 leaks associated with fire hydrants, freeze proof hose bibs, water meters, etc., and 33 leaks inside buildings. Over two thousand acoustic measurements were made in order to obtain these results.
Raman Excitation Profiles with Self-Consistent Excited-State Displacements (2000)

Raman excitation profiles (REPs) are computed in the time domain for harmonic modes with excited-state displacement g and measured at multiple excitation frequencies ωL in a bimetallic complex with a metal-to-metal charge-transfer band and 10 coupled modes. Self-consistency is required because the time evolution depends on all displaced modes rather than the individual intensities used in the short-time approximation for g(0). Self-consistency ensures that g is independent of ωL for a single resonance. Exact REPs for displaced oscillators show the importance of vibronic lifetimes and marked deviations from the short-time approximation at molecular frequencies. Spectra at multiple ωL indicate scattering from another electronic excitation with displacement h that is also found self-consistently. Mode-specific Raman data at multiple ωL require additional parameters to yield reliable structural information. Harmonic oscillators with self-consistent displacements are a first approximation to systems with many coupled modes.
InGaAlAs/InP ridge-waveguide lasers fabricated by highly selective dry etching in CH/sub 4//H/sub 2//O/sub 2/ plasma (2003)

Demonstration of the highly selective dry etching of InP on InAlAs to produce vertical and smooth etching profiles for InGaAlAs ridge-waveguide lasers is described. The selective and anisotropic etching characteristics were achieved by adding oxygen to the mixture of methane and hydrogen gases used in etching. A low plasma power density was used for both increased selectivity and a lower possibility of plasma-induced damage. With a plasma power density of 0.08 W/cm/sup 2/, and oxygen content of the mixture in the range from 0.5% to 1.0%, the selectivity is a high 60, yielding vertical etching profiles and smooth surface morphology. This selective dry etching process was applied to the fabrication of InGaAlAs ridge-waveguide lasers. The lasing characteristics of the lasers with selectively dry-etched ridge-waveguides are almost as good as those with wet-etched ones, which confirms the damage-free nature of this selective dry-etching process.
Efficacy and Safety of Systemic Treatments Among Colorectal Cancer Patients: A Network Meta-Analysis of Randomized Controlled Trials (2022)

https://www.crd.york.ac.uk/prospero/, identifier CRD42019127772.
Synthesis of acetylene-terminated .alpha.,.omega.-bisphenoxy alkanes (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of acetylene-terminated .alpha.,.omega.-bisphenoxy alkanesStephan A. Babirad and William A. FeldCite this: J. Chem. Eng. Data 1989, 34, 1, 140–141Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published inissue 1 January 1989https://pubs.acs.org/doi/10.1021/je00055a040https://doi.org/10.1021/je00055a040research-articleACS PublicationsRequest reuse permissionsArticle Views174Altmetric-Citations2LEARN 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 InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Isotropic–nematic phase transition in the Lebwohl–Lasher model from density of states simulations (2012)

Density of states Monte Carlo simulations have been performed to study the isotropic-nematic (IN) transition of the Lebwohl-Lasher model for liquid crystals. The IN transition temperature was calculated as a function of system size using expanded ensemble density of states simulations with histogram reweighting. The IN temperature for infinite system size was obtained by extrapolation of three independent measures. A subsequent analysis of the kinetics in the model showed that the transition occurs via spinodal decomposition through aggregation of clusters of liquid crystal molecules.
ChemInform Abstract: Cyclocondensation of Amino-propargyl Silanes. (2012)

The reactions are relatively insensitive to water and air and produce various polycyclic N-heterocycles bearing an allenic side chain.
Investigation of Photo-Induced Hysteresis and Off-Current in Amorphous In-Ga-Zn Oxide Thin-Film Transistors Under UV Light Irradiation (2013)

We investigated the hysteresis and off-current (I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">off</sub> ) of amorphous In-Ga-Zn oxide thin-film transistors illuminated by 400 nm light at various intensities. Both hysteresis and I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">off</sub> are induced by the ionized oxygen vacancy (Vo <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2+</sup> ) that forms at the interface between the gate insulator and active layer. In our measurements, I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">off</sub> was much less than the estimated photocurrent. I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">off</sub> showed a rapid nonlinear increase with light intensity, while the photocurrent of a conventional crystalline semiconductor is expected to show a linear relationship. Furthermore, a numerical analysis suggested that the response time of Vo <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2+</sup> should be considered when analyzing the hysteresis of these devices.