gebhart/patrepeval huggingface dataset:
Multi-Environment based Meta-Learning with CSI Fingerprints for Radio Based Positioning (2022)

Radio based positioning of a user equipment (UE) based on deep learning (DL) methods using channel state information (CSI) fingerprints have shown promising results. DL models are able to capture complex properties embedded in the CSI about a particular environment and map UE's CSI to the UE's position. However, the CSI fingerprints and the DL models trained on such fingerprints are highly dependent on a particular propagation environment, which generally limits the transfer of knowledge of the DL models from one environment to another. In this paper, we propose a DL model consisting of two parts: the first part aims to learn environment independent features while the second part combines those features depending on the particular environment. To improve transfer learning, we propose a meta learning scheme for training the first part over multiple environments. We show that for positioning in a new environment, initializing a DL model with the meta learned environment independent function achieves higher UE positioning accuracy compared to regular transfer learning from one environment to the new environment, or compared to training the DL model from scratch with only fingerprints from the new environment. Our proposed scheme is able to create an environment independent function which can embed knowledge from multiple environments and more effectively learn from a new environment.
Reconstruction approach to quantum dynamics of bosonic systems (2019)

We propose an approach to analytically solve the quantum dynamics of bosonic systems. The method is based on reconstructing the quantum state of the system from the moments of its annihilation operators, dynamics of which is solved in the Heisenberg picture. The proposed dynamical reconstruction method is general in the sense that it does not require assumptions on the initial conditions of the system such as separability, or the structure of the system such as linearity. It is an alternative to the standard master-equation approaches, which are analytically demanding especially for large multipartite quantum systems. To demonstrate the proposed technique, we apply it to a system consisting of two coupled damped quantum harmonic oscillators.
Implementation of Low-Power 6–8 b 30–90 GS/s Time-Interleaved ADCs With Optimized Input Bandwidth in 32 nm CMOS (2016)

A model for voltage-based time-interleaved sampling is introduced with two implementations of highly interleaved analog-to-digital converters (ADCs) for 100 Gb/s communication systems. The model is suitable for ADCs where the analog input bandwidth is of concern and enables a tradeoff between different architectures with respect to the analog input bandwidth, the hold time of the sampled signal, and constraints on the clock path. The two ADCs at 6 and 8 b resolution implement inline demux sampling with 32χ and 64χ interleaving to achieve 36 GS/s at 110 mW and 90 GS/s at 667 mW, respectively. The analog input bandwidth of both ADCs exceeds 20 GHz. The SNDR of the 64χ interleaved ADC is above 36 dB up to 6.1 GHz and above 33 dB up to 19.9 GHz at 90 GS/s, and the SNDR of the 32χ interleaved ADC exceeds 31.6 dB up to Nyquist at 36 GS/s. The 32χ and 64χ interleaved ADCs are optimized for area and occupy 0.048 and 0.45 mm2, respectively, in 32 nm CMOS SOI technology.
Influence of Arachidonate Metabolism on Enhancement of Intracellular Transglutaminase Activity in Mouse Peritoneal Macrophages (1988)

We examined whether arachidonate metabolism exerted any influence on the enhancement of intracellular transglutaminase activity in mouse peritoneal macrophages. Enhancement of the intracellular transglutaminase activity was observed on stimulation of macrophages with normal sheep red blood cells (SRBC) or immunoglobulin G (IgG)-coated SRBC, and was inhibited by inhibitors of phospholipase A2 and cyclooxygenase. Moreover, prostaglandin E2 (PGE2), a main product of the cyclooxygenase pathway, leukotriene B4 (LTB4), a product of 5-lipoxygenase, and arachidonic acid also could directly induce high levels of intracellular transglutaminase activity without stimulation of macrophages by SRBC or IgG-coated SRBC, but leukotriene C4, prostaglandin D2, and prostacyclin were unable to induce high activity of the enzyme. Enhancement of transglutaminase activity induced by LTB4 was inhibited by cyclooxygenase inhibitor, but the enzyme activity induce by PGE2 was not inhibited. Furthermore, the quantity of PGE2 released into the culture medium of macrophages stimulated with SRBC or IgG-coated SRBC correlated well with the activity of intracellular transglutaminase in macrophages. Moreover, enhancement of transglutaminase activity by treatment of macrophages with SRBC or IgG-coated SRBC was partially suppressed by sodium benzoate, which is a scavenger of hydroxy radical. These findings suggest that arachidonate metabolism, in particular the cyclooxygenase pathway, plays an important role in the enhancement of intracellular transglutaminase activity.
Cute: A concatenative method for voice conversion using exemplar-based unit selection (2016)

State-of-the art voice conversion methods re-synthesize voice from spectral representations such as MFCCs and STRAIGHT, thereby introducing muffled artifacts. We propose a method that circumvents this concern using concatenative synthesis coupled with exemplar-based unit selection. Given parallel speech from source and target speakers as well as a new query from the source, our method stitches together pieces of the target voice. It optimizes for three goals: matching the query, using long consecutive segments, and smooth transitions between the segments. To achieve these goals, we perform unit selection at the frame level and introduce triphone-based preselection that greatly reduces computation and enforces selection of long, contiguous pieces. Our experiments show that the proposed method has better quality than baseline methods, while preserving high individuality.
Differential cross section polarization moments: Location of the D-atom transfer in the transition-state region for the reactions Cl+C2D6→DCl(v′=0,J′=1)+C2D5 and Cl+CD4→DCl(v′=0,J′=1)+CD3 (1997)

The photoloc technique can permit the measurement of not only the state-to-state differential cross section but also its complete product polarization dependence for all moments of orientation and alignment with k⩽2. We have realized this possibility for the reaction Cl+C2D6→DCl(v′=0,J′=1)+C2D5 at a collision energy of 0.25 eV, for which we have measured the differential cross section, 1/σ(dσ00/dΩr), and the four polarization-dependent moments of the differential cross section, A1(1)stf, A0(2)stf, A1(2)stf, and A2(2)stf, in the stationary target frame (STF), which are defined by Aq(k)stf=(dσkqstf/dΩr)/(dσ00/dΩr). For the Cl+CD4→DCl(v′=0,J′=1)+CD3 reaction at a collision energy of 0.28 eV we have also determined 1/σ(dσ00/dΩr) and A0(2)stf. The laboratory speed distributions of the DCl(v′=0,J′=1) products are measured using 2+1 resonance-enhanced multiphoton ionization (REMPI) and the core-extraction technique. The polarization-dependent differential cross sections are determined from the dependence of the core-extracted profiles on the photolysis and probe polarizations. Recent studies have shown that the Cl+CD4 and Cl+C2D6 both show scattering behavior described by the line-of-centers model and both yield rotationally cold DCl products with little energy in the alkyl fragments. Despite these similarities, we measure DCl(v′=0,J′=1) product polarizations that differ greatly for these two reactions. For the Cl+CD4 reaction, we find that JDCl is maximally aligned perpendicular to an axis close to the product scattering direction, uDCl. For the Cl+C2D6 reaction, we find that JDCl is half-maximally aligned perpendicular to the line-of-centers direction. We interpret these results in terms of the location of the D-atom transfer along the reaction coordinate, positing that the D-atom transfer for the Cl+CD4 reaction occurs late in the reactive process and the D-atom transfer for the Cl+C2D6 reaction occurs earlier near the distance of closest approach. We interpret the difference in the locations of the D-atom transfer to be the cause of the large differences in the Arrhenius pre-exponential factors of the Cl+CD4 and Cl+C2D6 reactions.
Ensemble Solar Forecasting Statistical Quantification and Sensitivity Analysis: Preprint (2015)

Uncertainties associated with solar forecasts present challenges to maintain grid reliability, especially at high solar penetrations. This study aims to quantify the errors associated with the day-ahead solar forecast parameters and the theoretical solar power output for a 51-kW solar power plant in a utility area in the state of Vermont, U.S. Forecasts were generated by three numerical weather prediction (NWP) models, including the Rapid Refresh, the High Resolution Rapid Refresh, and the North American Model, and a machine-learning ensemble model. A photovoltaic (PV) performance model was adopted to calculate theoretical solar power generation using the forecast parameters (e.g., irradiance, cell temperature, and wind speed). Errors of the power outputs were quantified using statistical moments and a suite of metrics, such as the normalized root mean squared error (NRMSE). In addition, the PV model's sensitivity to different forecast parameters was quantified and analyzed. Results showed that the ensemble model yielded forecasts in all parameters with the smallest NRMSE. The NRMSE of solar irradiance forecasts of the ensemble NWP model was reduced by 28.10% compared to the best of the three NWP models. Further, the sensitivity analysis indicated that the errors of the forecasted cell temperature attributed only approximately 0.12% to the NRMSE of the power output as opposed to 7.44% from the forecasted solar irradiance.
Heparan Sulfate Interacting Protein (HIP/L29) Negatively Regulates Growth Responses to Basic Fibroblast Growth Factor in Gingival Fibroblasts (2002)

Basic fibroblast growth factor (bFGF) modulates gingival growth, and its release from heparan sulfate (HS) in the extracellular matrix (ECM) governs local tissue bioavailability. We identified a heparin/HS interacting protein (HIP/L29) that recognizes specific HS sequences. We hypothesize that HIP/L29, by modulating the interactions of bFGF with HS chains on proteoglycans, could regulate bFGF bioavailability. To investigate interactions between bFGF and HIP/L29, we isolated and cultured fibroblasts from normal gingiva and overgrown gingiva from patients on cyclosporine (CSA). bFGF significantly stimulated gingival fibroblast proliferation with or without heparin. Recombinant human HIP/L29 dramatically decreased bFGF-induced proliferation, but did not alter responses to insulin-like growth factor-1 (IGF-1). Analysis of mitogen-activated protein kinase (MAPK) phosphorylation patterns showed that bFGF stimulation of p44 (Erk-1), but not p42 (Erk-2), also was inhibited by HIP/L29 in a dose-dependent manner. Together, these results support our hypothesis that HIP/L29 modulates the bioavailability and action of bFGF.
Investigation into the optimal linear time-invariant lag correction for radar artifact removal (2011)

The choice of step-response edge (RSRF versus FSRF) and exposure intensity for IRF calibration could leave large residual lag in the step-response data. For the CBCT reconstructions, IRFs derived from FSRF data at low exposure intensities (1.6 and 3.4%) best removed the CBCT shading artifact. Which IRF to use for lag correction could be selected based on the object size.
HOM power propagation and attenuation in PEP-II B-factory (2002)

Most of the higher-order-mode (HOM) power that propagates in the PEP-II rings is generated in the RF cavities but its content in terms of TE and TM components has not been accurately determined. For purpose of shielding beamline components such as bellows and BPMs from TE power penetration and determining the heating on the cavity HOM absorber, this HOM power content and its distribution profile around the rings are needed. This paper calculates the TE and TM contributions of the RF cavities to the circulating HOM power and their transmission properties at another cavity downstream. By considering both the generation in, and scattering by the cavities, as well as the attenuation along the vacuum chamber, a complete distribution profile for the TE and TM HOM power can be obtained.
Analysis and Optimization of Financial Analytics Benchmark on Modern Multi- and Many-core IA-Based Architectures (2012)

In the past 20 years, computerization has driven explosive growth in the volume of financial markets and in the variety of traded financial instruments. Increasingly sophisticated mathematical and statistical methods and rapidly expanding computational power to drive them have given rise to the field of computational finance. The wide applicability of these models, their computational intensity, and their real-time constraints require high-throughput parallel architectures. In this work, we have assembled a financial analytics workload for derivative pricing, an important area of computational finance. We characterize and compare our workload's performance on two modern, parallel architectures: the Intel <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> Xeon Phi <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">TM</sup> 1 Processor 2680, and the recently announced Intel <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> Xeon PhiTM 1 `Knights Corner' coprocessor. In addition to analysis of the peak performance of the workloads on each architecture, we also quantify the impact of several levels of compiler and algorithmic optimization. Overall, we find that large caches on both architectures, out-of-order cores on Intel <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> Xeon Phi <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">TM</sup> 1, and large compute and memory bandwidth on Intel <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> Xeon PhiTM deliver high level of performance on financial analytics.
Support for non-locking parallel reception of packets belonging to a single memory reception FIFO (2023)

A method and apparatus for distributed parallel messaging in a parallel computing system. A plurality of DMA engine units are configured in a multiprocessor system to operate in parallel, one DMA engine unit for transferring a current packet received at a network reception queue to a memory location in a memory FIFO (rmFIFO) region of a memory. A control unit implements logic to determine whether any prior received packet destined for that rmFIFO is still in a process of being stored in the associated memory by another DMA engine unit of the plurality, and prevent the one DMA engine unit from indicating completion of storing the current received packet in the reception memory FIFO (rmFIFO) until all prior received packets destined for that rmFIFO are completely stored by the other DMA engine units. Thus, there is provided non-locking support so that multiple packets destined for a single rmFIFO are transferred and stored in parallel to predetermined locations in a memory.
Acute cholangitis. (1992)

Acute cholangitis is a clinical syndrome marked by fever, jaundice, and abdominal pain that develops because of stasis and infection in the biliary tract. Patients with cholangitis may present with symptoms ranging from a mild, recurrent illness to overwhelming sepsis. Increased age, malignant obstruction, and a rapidly progressive, systemic illness define a group of patients at increased risk. Patients who are delayed in diagnosis, present with septicemia, or fail to respond to conservative treatment still have substantial morbidity and death from cholangitis. Antibiotic therapy that includes coverage for anaerobes and gram-negative, enteric organisms together with other supportive measures often resolves the acute episode, permitting elective diagnostic procedures prior to definitive treatment of biliary tract obstruction. Advances in endoscopic and transhepatic procedures have reduced the necessity for and risks associated with emergent operative biliary drainage.
On the influence of morphology of carbide in a carbon-steel on the appearance of initial yielding (2002)

On the influence of morphology
A hybrid data sharing-data partitioning architecture for transaction processing (2003)

Proposes and evaluates a hybrid architecture that combines the approaches, and offers the advantages of both data sharing and data partitioning. Some databases are shared between systems, while others are retained private by specific systems. The issue is to determine which databases to share, which to retain private, and how to route transactions and partition the private databases among systems so as to minimize response time or overheads, while balancing the load among systems. A simulated annealing heuristic is used to solve this optimization problem. Trace data from large mainframe systems running IBM's IMS database management system are used to illustrate the methodology and to demonstrate the advantage of the hybrid approach.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
ChemInform Abstract: Catalyst‐Controlled Chemoselective Arylation of 2‐Aminobenzimidazoles. (2013)

Abstract An orthogonal set of conditions for the selective arylation steps is developed.
Mapping of weak current-induced magnetic fields in a 3D volume of the human brain at high resolution: 2D vs. Simultaneous multi slice (2023)

Exact knowledge of current distributions induced by transcranial electrical stimulation (TES) in the brain is important for effective clinical use of TES. MRCDI uses MRI to measure the TES-induced magnetic fields for estimating the underlying current flow distributions. The estimation methods can benefit from highly sensitive volume MRCDI measurements at a high spatial resolution. Here, we advanced our 2D spoiled gradient-echo-based MRCDI method for a sparse volume acquisition by using simultaneous-multi-slice (SMS) acquisition. Our SMS strategy demonstrated 25% improvement in noise floors against 2D. We test the performance of our methods by phantom and human in-vivo experiments using cable-loop currents.
A novel predictive model for formation enthalpies of Si and Ge hydrides with propane‐ and butane‐like structures (2010)

Butane- and propane-like silicon-germanium hydrides and chlorinated derivatives represent a new class of precursors for the fabrication of novel metastable materials at low-temperature regimes compatible with selective growth and commensurate with the emerging demand for the reduced thermal budgets of complementary metal oxide semiconductor integration. However, predictive simulation studies of the growth process and reaction mechanisms of these new compounds, needed to accelerate their deployment and fine-tune the unprecedented low-temperature and low-pressure synthesis protocols, require experimental thermodynamic data, which are currently unavailable. Furthermore, traditional quantum chemistry approaches lack the accuracy needed to treat large molecules containing third-row elements such as Ge. Accordingly, here we develop a method to accurately predict the formation enthalpy of these compounds using atom-wise corrections for Si, Ge, Cl, and H. For a test set of 15 well-known hydrides of Si and Ge and their chlorides, such as Si(3)H(8), Ge(2)H(6), SiGeH(6), SiHCl(3), and GeCl(4), our approach reduces the deviations between the experimental and predicted formation enthalpies obtained from complete basis set (CBS-QB3), G2, and B3LPY thermochemistry to levels of 1-3 kcal/mol, or a factor of ∼5 over the corresponding uncorrected values. We show that our approach yields results comparable or better than those obtained using homodesmic reactions while circumventing the need for thermochemical data of the associated reaction species. Optimized atom-wise corrections are then used to generate accurate enthalpies of formation for 39 pure Si-Ge hydrides and a selected group of 20 chlorinated analogs, of which some have recently been synthesized for the first time. Our corrected enthalpies perfectly reproduce the experimental stability trends of heavy butane-like compounds containing Ge. This is in contrast to the direct application of the CBS-QB3 method, which yields erratic predictions. Our approach also provides quantitative bond-additivity rules for the chlorination of these heavier species. Finally, we discuss structure and bonding trends across the entire sequence of butane-, propane-, and ethane-like molecules with a special focus on the isomeric variations.
Experimental investigation of subcooled flow boiling of a 50/50 ethylene glycol/water mixture in finned rectangular aluminum channels (2018)

Subcooled flow boiling heat transfer experiments were performed with a 50/50 ethylene glycol/water mixture in a finned aluminum channel. The channel represented a hybrid electric vehicle power electronic cold plate receiving a 50/50 mixture from the radiator at 105°C and 2 atmospheres. Experiments used a range of mixture flow rates and both top- and bottom-heating situations. Boiling curves were generated, and subcooled flow boiling heat transfer coefficients were determined including the test channel fin effects. Subcooled flow boiling heat transfer coefficients showed a 25–30% increase compared to single-phase convection.
Drug-eluting balloon: Very short-term exposure and overlapping (2008)

Paclitaxel balloon coating has shown promising effects in inhibiting restenosis in initial clinical trials. The aim of the present study was to evaluate the influence of two critical features of drug-eluting balloon (DEB) application - inflation time and increased dose due to overlapping balloons. Fifty-six stainless steel stents were implanted in the left anterior descending and circumflex coronary arteries of 28 domestic pigs using a 1.2:1.0 overstretch ratio. Stents were mounted on conventional uncoated and paclitaxel-coated angioplasty balloon catheters. The animals were randomized to five different treatments with a range of short (10 seconds [s] inflation using 1 DEB) to extended (2x60 s inflation using 2 DEB) intima contact time. After 28 days, quantitative angiography and histomorphometry of the stented arteries was performed on a total of 23 pigs. Paclitaxel balloon coating led to a marked reduction of parameters characterizing in-stent stenosis: Late lumen loss was 1.37 +/- 0.49 mm for uncoated balloons, 0.23 +/- 0.42 mm for one coated balloon 60 s inflation time, 0.37 +/- 0.28 mm for 10 s inflation time and 0.30 +/- 0.19 mm for the vessel segment treated by two coated balloons with 60 s inflation each. Neointimal areas were 4.26 +/- 1.18, 1.68 +/- 0.23, 1.83 +/- 0.40 and 1.67 +/- 0.46 mm(2), respectively (p = 0.001 versus control, p > 0.05 between paclitaxel-treated groups). Despite the marked reduction of neointimal proliferation, endothelialization of stent struts was present in all samples. DEB were found to effectively reduce neointimal proliferation regardless of inflation time and dose within the tested range. No adverse reactions were seen as dose was increased to more than three times the clinically tested dose.