gebhart/patrepeval huggingface dataset:
A micromachined vibration isolation system for reducing the vibration sensitivity of surface transverse wave resonators (1998)

A micromachined system has been developed for reducing the vibration sensitivity of surface transverse wave (STW) resonators. The isolation system consists of a support platform for mounting the STW resonator, four support arms, and a support rim. The entire isolation system measures 8 mm by 9 mm by 0.4 mm without the resonator mounted on the platform. The system acts as a passive vibration isolation system, decreasing the magnitude of high frequency (>1.2 kHz) vibrations. Finite element analysis is used to analyze the acceleration sensitivity of the mounted resonator. The isolation system is then modeled as a damped mass-spring system and the transmissibility of vibration from the support rim to the support platform is calculated. Multiplying the acceleration sensitivity of the resonator by the transmissibility results in the expected system vibration sensitivity. The isolation systems are fabricated using two sided bulk etching of (110) oriented silicon wafers. STW resonators were mounted on the isolation systems, and the isolated units were mounted on commercial hybrid oscillator substrates. Vibration sensitivity measurements were taken for vibrations with frequencies ranging from 100 Hz to 5 kHz. The measured data show that the system performs as expected with a low frequency (<500 Hz) vibration sensitivity of 1.8x10(-8)/g and a high frequency roll off of 12 dB/octave.
High Speed and High Resolution Measurements on Submicron Capacitors for FeRAM Application (2003)

Ferroelectric capacitors of submicron size for nonvolatile memory applications are entering the structure size of nanotechnology. Therefore the signal level for hysteresis measurements is getting much smaller than the influence of the parasitic capacitance of the measurement setup, e.g. caused by the cantilever of a scanning force microscope (SFM) used for contacting. A novel compensation method significantly increases the signal to noise ratio by active cancellation of the parasitic capacitance of the setup during the measurement.
Femtosecond Stimulated Raman Spectroscopy (2010)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Richard A. Mathies; Femtosecond Stimulated Raman Spectroscopy. AIP Conf. Proc. 6 August 2010; 1267 (1): 4–5. https://doi.org/10.1063/1.3482639 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Millimeter Wave Channel Modeling via Generative Neural Networks (2020)

Statistical channel models are instrumental to design and evaluate wireless communication systems. In the millimeter wave bands, such models become acutely challenging; they must capture the delay, directions, and path gains, for each link and with high resolution. This paper presents a general modeling methodology based on training generative neural networks from data. The proposed generative model consists of a two-stage structure that first predicts the state of each link (line-of-sight, non-line-of-sight, or outage), and subsequently feeds this state into a conditional variational autoencoder that generates the path losses, delays, and angles of arrival and departure for all its propagation paths. Importantly, minimal prior assumptions are made, enabling the model to capture complex relationships within the data. The methodology is demonstrated for 28GHz air-to-ground channels in an urban environment, with training datasets produced by means of ray tracing.
Oxaphosphole‐Based Monophosphorus Ligands for Palladium‐Catalyzed Amination Reactions (2011)

Abstract A novel class of C‐2‐substituted oxaphosphole‐based monophosphines 1–4 has been synthesized. Palladium complexes derived from these ligands and their C‐2‐unsubstituted analogs provide general catalysts for amination reactions of challenging aryl and heteroaryl halides with sterically hindered anilines and alkylamines.
Initial clinical test of the first Helmet-Chin PET prototype for highly sensitive brain imaging (2016)

254 Objectives With progress in clinical studies on recently developed diagnostic medicine approaches for dementia, there is an emerging demand for dedicated brain PET scanners to provide early diagnosis of the disease. Therefore, we have proposed the Helmet-Chin PET, a novel geometry for highly sensitive brain imaging based on a hemispheric arrangement of detectors. For a proof-of-concept, last year we developed the first prototype using 4-layered depth-of-interaction (DOI) detectors. Following successful realization of phantom imaging, we conducted the first clinical test which we describe in this paper. Methods The Helmet-Chin PET prototype was developed using 54 DOI detectors, each of which consisted of 16×16×4 Zr-doped GSO crystals (2.8×2.8×7.5 mm3) and a high sensitivity 64-channel flat-panel photomultiplier tube. In the prototype, 47 detectors were used to form a hemisphere of 25 cm inner diameter and 50 cm outer diameter, and 7 detectors were used for the chin detector. First of all, we compared sensitivity for the brain region with a commercial scanner to determine injection activity. We measured the count rate performance of the prototype and that of a whole-body PET, Biograph mCT Flow 64-4R PET/CT system (Siemens Medical Solutions USA, Inc.). The mCT consisted of four detector rings 84 cm in diameter, having 192 detectors, each of which consisted of 13×13 LSO crystals (4×4×20 mm3). We made a pool phantom with a shape of hemisphere with inner diameter of 20 cm filled with 18F solution. The phantom was measured with the prototype and the mCT for 5 min. Following the sensitivity assessment, we conducted the initial clinical test using the prototype. A healthy volunteer was measured for 18 min beginning 85 min after 18F-FDG injection of 70 MBq. For attenuation correction, the separately scanned CT image was registered. Results The measured sensitivity for the brain region was 17.4 kcps/MBq for the Helmet-Chin PET prototype and 9.3 kcps/MBq for the mCT, where the energy windows were 400-600 keV and 435-650 keV, respectively. The sensitivity of the Helmet-Chin PET for the brain region was almost twice as high as that of the mCT, even though the number of detectors was less than 30% that of the mCT. For the initial clinical test, we could obtain a clear image of the brain with low radioactivity injection. Conclusions Our initial clinical test using the first prototype showed that the Helmet-Chin PET has promising performance for highly sensitive brain imaging.
The genetic heterogeneity and drug resistance mechanisms of relapsed refractory multiple myeloma (2022)

Multiple myeloma is the second most common hematological malignancy. Despite significant advances in treatment, relapse is common and carries a poor prognosis. Thus, it is critical to elucidate the genetic factors contributing to disease progression and drug resistance. Here, we carry out integrative clinical sequencing of 511 relapsed, refractory multiple myeloma (RRMM) patients to define the disease's molecular alterations landscape. The NF-κB and RAS/MAPK pathways are more commonly altered than previously reported, with a prevalence of 45-65% each. In the RAS/MAPK pathway, there is a long tail of variants associated with the RASopathies. By comparing our RRMM cases with untreated patients, we identify a diverse set of alterations conferring resistance to three main classes of targeted therapy in 22% of our cohort. Activating mutations in IL6ST are also enriched in RRMM. Taken together, our study serves as a resource for future investigations of RRMM biology and potentially informs clinical management.
Integration of problem solving and learning in intelligent robots. (1990)

In the real world, there are many kinds of uncertainties in motions of robots . Moreover, robots cannot always get sufficient knowledge about tasks in advance. Therefore , intelligent robots must posses both problem solving ability to decide on proper motions with insufficient knowledge and learning ability to acquire knowledge from experiences.
Multiple-mode radiation detector (2023)

An apparatus for detecting radiation is provided. In embodiments, at least one sensor medium is provided, of a kind that interacts with radiation to generate photons and/or charge carriers. The apparatus also includes at least one electrode arrangement configured to collect radiation-generated charge from a sensor medium that has been provided. The apparatus also includes at least one photodetector configured to produce an electrical output in response to photons generated by radiation in such a sensor medium, and an electronic circuit configured to produce an output that is jointly responsive to the collected charge and to the photodetector output. At least one such electrode arrangement, at least one such photodetector, and at least one such sensor medium are combined to form an integral unit.
Observation of surface defects in 6H-SiC wafers (1993)

A broad peak was observed in commercially available single-crystal 6H-SiC material. The samples were nitrogen doped, n type with free carrier concentration (ND−NA) of 1.3×1018 cm−3 that was determined from capacitance-voltage (C-V) measurements. The defect concentration profile showed that the defect was spatially localized and had a maximum concentration of 2.5×1014 cm−3 at 570 Å from the semiconductor-metal interface. The activation energy varied with applied voltage from Ec−0.40 eV at VR=−7 V to Ec−0.54 eV at VR=−5 V. This can be explained qualitatively in terms of the Poole–Frenkel effect. The defect was removed by the growth and subsequent removal of an oxide layer. Therefore, we conclude that the defect was caused by residual damage from the polishing process.
Practical VLSI realization of morphological operations (1991)

Mathematical morphology has been proven to be a very useful tool for image processing and computer vision. Gray scale and binary morphological operations are usually implemented by software. Software implementation is, however, inefficient and slow. To achieve real-time morphological processing, a new hardware implementation method is presented based on VLSI. The complexity of the implementation method is also discussed.
Recruitment of the adaptor protein Nck to PECAM-1 couples oxidative stress to canonical NF-κB signaling and inflammation (2015)

Oxidative stress stimulates nuclear factor κB (NF-κB) activation and NF-κB-dependent proinflammatory gene expression in endothelial cells during several pathological conditions, including ischemia/reperfusion injury. We found that the Nck family of adaptor proteins linked tyrosine kinase signaling to oxidative stress-induced activation of NF-κB through the classic IκB kinase-dependent pathway. Depletion of Nck prevented oxidative stress induced by exogenous hydrogen peroxide or hypoxia/reoxygenation injury from activating NF-κB in endothelial cells, increasing the abundance of the proinflammatory molecules ICAM-1 (intracellular adhesion molecule-1) and VCAM-1 (vascular cell adhesion molecule-1) and recruiting leukocytes. Nck depletion also attenuated endothelial cell expression of genes encoding proinflammatory factors but not those encoding antioxidants. Nck promoted oxidative stress-induced activation of NF-κB by coupling the tyrosine phosphorylation of PECAM-1 (platelet endothelial cell adhesion molecule-1) to the activation of p21-activated kinase, which mediates oxidative stress-induced NF-κB signaling. Consistent with this mechanism, treatment of mice subjected to ischemia/reperfusion injury in the cremaster muscle with a Nck inhibitory peptide blocked leukocyte adhesion and emigration and the accompanying vascular leak. Together, these data identify Nck as an important mediator of oxidative stress-induced inflammation and a potential therapeutic target for ischemia/reperfusion injury.
Cloning of DNA Polymerase I Geobacillus thermoleovorans SGAir0734 from a Batu Kuwung Hot Spring in Escherichia coli (2020)

Access to biological engineering has become a critical point of modern science development through polymerase chain reaction (PCR). One of the main components in this process is DNA polymerase, which copies the main template DNA. However, there i
Morphology of Low-Temperature All-Copper Interconnects Formed by Dip Transfer (2017)

Flip-chip interconnects made entirely from copper are needed to overcome the intrinsic limits of solder-based interconnects and match the demand for increased current densities. To this end, dip-based all-copper interconnects are a promising approach to form electrical interconnects by sintering copper nanoparticles between the copper pillar and pad. However, the remnant porosity of the copper joint formed between the pillar and the pad limits the performance of this technology. Moreover, the applicability of this technology in the printed circuit board (PCB) industry is endangered by thermo-mechanical stresses that arise during the sintering and by the unknown compatibility with standard finishing layers used to prevent the oxidation of the copper. This work reports three main advances in dip-based all-copper interconnect technology. First, a reduction in the porosity level of the copper joint is obtained by application of pressure during the bonding. Second, a decrease of the bonding temperature to 160 °C is achieved. Third, the compatibility of this technology with standard finishing layers is demonstrated.
Via Resistance Reduction using “Cool” PVD-Ta Processing (2003)

Different processes, including "cool" physical vapor deposition (PVD), of Ta barrier and Cu seed deposition were compared in Cu interconnect development. In the cool Ta process, the substrate temperature was <50°C, compared to a temperature of about >100°C in the standard process. With the cool process, via resistance (0.19 μm in via size) was reduced by about 25%, although 40% thicker Ta was measured at the via bottom. This was not in agreement with the common understanding that the thicker the Ta film is, the higher the via resistance. Blank film studies suggested that a mixed texture of α- and β-Ta was formed at via bottom in the new Ta/Cu process. X-ray diffraction spectra clearly exhibited the existence of α-Ta in addition to the β-Ta, where the latter is usually observed in the standard process. Electron diffraction spectra further supported the claim of mixed α-/β-Ta formation at via bottom. Moreover, Rutherford backscattering data suggested that the mixed α-/β-Ta had even higher thermal stability. © 2003 The Electrochemical Society. All rights reserved.
High‐speed reflectance confocal microscopy of human skin at 1251–1342 nm (2023)

These preliminary results demonstrate that high-speed SECM imaging of the human skin at 1251-1342 nm is feasible.
Analysis of the referral pattern to a supraregional bone and soft tissue tumour service (2003)

If a high suspicion of a soft tissue or bone tumour is suspected from the history, examination and plain radiograph, then early referral to a specialist centre is recommended where relevant, high-quality investigations can be arranged in a short time leading to a planned biopsy, confirmation of diagnosis and definitive treatment at an earlier stage.
Do Discs “Open” Anteriorly With Posterior-Only Correction of Scheuermannʼs Kyphosis? (2011)

For both surgical procedures, the majority of the kyphosis correction occurred in the lower thoracic levels and anterior disc heights increased up to twice as much as posterior disc heights shortened. The addition of the anterior release did not significantly alter the degree of correction or the disc shape changes.
Log Anomaly to Resolution: AI Based Proactive Incident Remediation (2021)

Based on 2020 SRE report, 80% of SREs work on postmortem analysis of incidents due to lack of provided information and 16% of toil come from investigating false positives/negatives. As a cloud service provider, the desire is to proactively identify signals that can help reduce outages and/or reduce the mean time to resolution. By leveraging AI for Operations (AIOps), this work proposes a novel methodology for proactive identification of log anomalies and its resolutions by sifting through the log lines. Typically, relevant information to retrieve resolutions corresponding to logs is spread across multiple heterogeneous corpora that exist in silos, namely historical ticket data, historical log data, and symptom resolution available in product documentation, for example. In this paper, we focus on augmented dataset preparation from multiple heterogeneous corpora, metadata selection and prediction, and finally, using these elements during run-time to retrieve contextual resolutions for signals triggered via logs. For early evaluation, we used logs from a production middleware application server, predicted log anomalies and their resolutions, and conducted qualitative evaluation with subject matter experts; the accuracy of metadata prediction and resolution retrieval are 78.57% and 65.7%, respectively.
12. Structures particulières de commande (2019)

Auteur de l'ouvrage : Emmanuel Godoy
Unique Thermal Conductivity Behavior of Single-Walled Carbon Nanotube−Polystyrene Composites (2008)

ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTUnique Thermal Conductivity Behavior of Single-Walled Carbon Nanotube−Polystyrene CompositesJonathan E. Peters, Dimitrios V. Papavassiliou, and Brian P. Grady*View Author Information School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, Oklahoma 73019* Corresponding author. E-mail: [email protected]Cite this: Macromolecules 2008, 41, 20, 7274–7277Publication Date (Web):September 24, 2008Publication History Received23 May 2008Revised8 September 2008Published online24 September 2008Published inissue 28 October 2008https://pubs.acs.org/doi/10.1021/ma8011569https://doi.org/10.1021/ma8011569rapid-communicationACS PublicationsCopyright © 2008 American Chemical SocietyRequest reuse permissionsArticle Views1431Altmetric-Citations90LEARN 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 SUBJECTS:Carbon nanotubes,Composites,Heat transfer,Polymers,Thermal conductivity Get e-Alerts
Unilateral Straight Hair and Congenital Horner Syndrome (2012)

Congenital Horner syndrome is a rare disorder that accounts for less than 5% of all cases of Horner syndrome. Like Horner syndrome in general, it consists primarily of ptosis, miosis, and anhidrosis. Congenital Horner syndrome may manifest some special features such as iris heterochromia since the sympathetic nervous system is an essential component for the development and maintenance of eye color. We present 3 cases of unilateral straight hair in association with congenital Horner syndrome in which the patients had straight hair ipsilateral to the Horner syndrome, whereas on the contralateral side, it was curly, and we discuss possible mechanisms for this phenomenon.
Combining dipole and mixed model approaches for UXO discrimination (2008)

A multi dipole (MD) model is combined with a statistical algorithm called the mixed model to discriminate between objects of interest, such as unexploded ordnance (UXO), and innocuous items. In the multi dipole model (an extended version of the single dipole model), electromagnetic induction (EMI) responses for bodies of revolution (BOR) are approximated with a set of dipoles placed along the axis of symmetry of the objects. The model accurately takes into account the scatterer's heterogeneity along its axis of symmetry and is fast enough to invert digital geophysical data for discrimination purposes in real/near real time. Determining the amplitudes of the multi dipoles is an ill-posed problem that requires regularization. Obtaining the regularization parameters is not straightforward and in many cases is done via impractical supervised approaches. To overcome this problem, in this paper we combine a new statistical approach called the mixed model with the multi dipole model. Mixed modeling (MM) can be viewed as a generalization of the empirical Bayesian approach. It assumes that the forward model is not perfect: i.e., the model parameters (the amplitudes of the responding multi magnetic dipoles) contain random noise with zero mean and constant variance. Based on these assumptions, the method derives the regularization parameter from the variance of the least square error between the model and actual data using standard linear regression. Numerical results are presented to illustrate the theoretical basis and practical realization of the combined MD-mixed model (MD-MM) algorithm for UXO discrimination under real field conditions. In addition, a new condensed algorithm for determining the location and orientation of buried objects is introduced and tested against the ESTCP pilot discrimination study dynamic data set.
Experimental parameterization of a diffuse scattering model at 60 GHz (2015)

In this work a measurement campaign is carried out to find the best diffuse scattering model parameters for three typical indoor materials: glass, plasterboard and chipboard. Diffuse scattering is modeled in this work using the effective roughness approach. A time gating technique is applied to both measured and simulated time responses to single out the received power of the diffuse scattered component. The comparison between measured and simulated relative received powers allows the inference of the best-fit parameters values, as shown in the results.
The word-gesture keyboard (2012)

research-article Share on The word-gesture keyboard: reimagining keyboard interaction Authors: Shumin Zhai Google and ACM Transactions on Computer-Human Interaction Google and ACM Transactions on Computer-Human InteractionView Profile , Per Ola Kristensson University of St Andrews University of St AndrewsView Profile Authors Info & Claims Communications of the ACMVolume 55Issue 9September 2012 pp 91–101https://doi.org/10.1145/2330667.2330689Published:01 September 2012Publication History 102citation8,706DownloadsMetricsTotal Citations102Total Downloads8,706Last 12 Months4,254Last 6 weeks15 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my Alerts New Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access