gebhart/patrepeval huggingface dataset:
Efficient method for harmonics estimation of car engine sounds: application to high quality real-time synthesis (2008)

Additive synthesis is the most popular method for the resynthesis of sounds containing slowly evolving harmonics or partials, such as car engine noise and more generally rotating machines sounds. The most important step lies in the estimation of the amplitude and frequency of each sinusoidal component. It appears that insufficiently precise estimation often leads to unsatisfactory results in terms of sound fidelity. A method providing the time and frequency evolution of the amplitude of the harmonics of a recorded sound is presented. This technique is based on a joint time and frequency chaining of amplitude's extrema of amplitudes coming from a short-time Fourier transform, using forward and backward estimation. The proposed method is compared to a rough estimation, and to an estimation based on measured tachometric data, all carried out over the same car engine sound. This estimation method is implemented into the LEA software, which thus allows fast and precise computations of the parameters. Moreover, it also helps in estimating the frequency content of the “background” noise, which depends on the speed, allowing the extraction of the partials from the original sound in an easy and efficient way. Once these characteristics are found, a high quality real-time synthesis is possible.
Web accessibility for individuals with cognitive deficits (2007)

Tim Berners-Lee claimed in 2001 that “the power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect”. A considerable amount of work has been done to make the web accessible to those with sensory or motor disability, with an increasing number of government and enterprise intranet webs being “accessible”, and also with some consortiums and groups seriously approaching this commitment. Some authors, such as Harrysson, have already highlighted the need for a cognitively accessible web. However, in spite of good intentions, there has been little work to date that has tackled this task. At least until now, the existing WAI and NI4 recommendations about cognitive disability are extremely difficult (if not impossible) to test, as they are only general recommendations. This article explains an alternative Web that has been constructed and tested on a sample of participants with cognitive disabilities (N = 20) with positive results encouraging us to dedicate more effort to fine tune their requirements regarding specific cognitive deficits and automating the process of creating and testing cognitively accessible web content. This alternative web implies the use of a simplified web browser and an adequate web design. Discussion of the need to have several levels of cognitive accessibility, equivalent (although not identical) content for this collective and the need for testable protocols of accessibility that support these people's needs is also included. This article finishes with conclusions about the potential impact of accessible pages in the daily life of people suffering from cognitive deficits, outlining the features to be considered within a user profile specification that support cognitive difficulties and with reflections about the suitability of Semantic Web Technologies for future developments in this field.
Controlling Seismic Response using Passive Energy Dissipating Cladding Connections (2013)

The basic function of passive energy dissipation (PED) devices is to absorb a portion of an earthquake's energy, thereby reducing the demand on structural members. In this way, such devices also limit the amount of damage to both the structure and its non-structural components in an earthquake. This paper examines the use of innovative cladding connections as suitable PED devices in multi-storey buildings. Use of such connections would also avoid the risk of brittle connection failures, like those observed during the Canterbury earthquake sequence. Quasi-static, uni-directional cyclic testing was conducted at the University of Canterbury of a single-storey, single-bay reinforced concrete frame clad with precast concrete panels. The panels were attached to the frame using U-Shaped Flexural Plates as potential PED cladding connections. Such connections utilise the relative displacement between a structure and its cladding during an earthquake to dissipate energy. The connections produced stable hysteretic damping up to 3.5% interstorey drift. Analytical models of the cladding connections were developed and incorporated into 2D numerical models of various buildings. Response history analyses were conducted, examining the building response and the energy demands of various components, both with and without cladding. Results show that PED cladding connections can potentially halve the full hysteretic energy of a structure as well as reduce inter-storey deflections. By being easily designed for various levels of participation, PED cladding connections can potentially be applied to both new and retrofitted buildings.
Temperature-Dependent Evolution of the Oxidation States of Cobalt and Platinum in Co1–xPtx Clusters under H2 and CO + H2 Atmospheres (2016)

Co1–xPtx clusters of 2.9-nm size with a range of atomically precise Pt/Co atomic ratios (x = 0, 0.25, 0.5, 0.75, 1) were synthesized using the mass-selected low-energy cluster beam deposition (LECBD) technique and soft-landed onto an amorphous alumina thin film prepared by atomic layer deposition (ALD). Utilizing ex situ X-ray photoemission spectroscopy (XPS), the oxidation state of the as-made clusters supported on Al2O3 was determined after both a 1-h-long exposure to air and aging for several weeks while exposed to air. Next, the aged cluster samples were characterized by grazing-incidence X-ray absorption spectroscopy (GIXAS) and then pretreated with diluted hydrogen and further exposed to the mixture of diluted CO and H2 up to 225 °C at atmospheric pressure, and the temperature-dependent evolutions of the particle size/shape and the oxidation states of the individual metal components within the clusters were monitored using in situ grazing-incidence small-angle X-ray scattering and X-ray absorption spectroscopy (GISAXS/GIXAS). The changes in the oxidation states of Co and Pt exhibited a nonlinear dependence on the Pt/Co atomic ratio of the clusters. For example, a low Pt/Co ratio (x ≤ 0.5) facilitates the formation of Co(OH)2, whereas a high Pt/Co ratio (x = 0.75) stabilizes the Co3O4 composition instead through the formation of a Co–Pt core–shell structure where the platinum shell inhibits the reduction of cobalt in the core of the Co1–xPtx alloy clusters. The obtained results indicate methods for optimizing the composition and structure of binary alloy clusters for catalysis.
Magnetic ordering in Ce3Al11 (1978)

The magnetic properties of Ce3Al11 have been studied at low temperatures under pressure. We show that some of the striking properties of CeAl3 may be due to the presence of small amounts of Ce 3Al11.
Recent advances in eddy current technology for aerospace applications (1990)

One of the aerospace inspection problems that has been growing in importance, is the testing of aircraft wheels. The improved lifetime of tyres has resulted in a much longer period between possible inspection checks and, consequently, the need to detect cracks at an early stage of propagation. Low levels of corrosion also need to be detected. The economic and reliable way to scan the wheels is by a mechanical scanning system, utilising an eddy current probe. British Airways have done much of the pioneer work in this field. A typical probe configuration is presented and the required frequency response is considered. >
Person resolution in person search results (2005)

Finding information about people on the Web using a search engine is difficult because there is a many-to-many mapping between person names and specific persons (i.e. referents). This paper describes a person resolution system, called WebHawk. Given a list of pages obtained by submitting a person query to a search engine, WebHawk facilitates person search in three steps: First of all, a filter removes those pages that contain no information about any person. Secondly, a cluster groups the remaining pages into different clusters, each for one specific person. To make the resulting clusters more meaningful, an extractor is used to induce query-oriented personal information from each page. Finally, a namer generates an informative description for each cluster so that users can find any specific person easily. The architecture of WebHawk is presented, and the four components are discussed in detail, with a separate evaluation of each component presented where appropriate. A user study shows that WebHawk complements most existing search engines and successfully improves users' experience of person search on the Web.
Preamble allocation scheme using trajectory information for mobile relay stations (2009)

We propose a novel preamble allocation scheme for mobile relay stations (MRS) in order to reduce the occurrence of preamble collision. We calculate the probability of preamble collision based on trajectory information of MRSs. Then, we select a preamble considering not only the probability of preamble collision but also interference from other base stations (BS) and relay stations (RS). Simulation results show that the proposed scheme significantly reduces the occurrence of preamble collision.
Conformational analysis and conductivity via dopant intercalation model for PPS and PPO (Polyphenylene sulfide and oxide) (1982)

Abstract Semi-empirical potential energy functions in conjunction with quantum mechanical methods were used to characterize the intrachain interactions and conformational aspects of the processable polymers PPS and PPO. The purpose of this study was to elucidate the structural aspects of the dopant-polymer interaction and mechanism of electrical conduction subsequent to doping of these materials. These polymers, upon doping, can reach high levels of conductivity in spite of the fact that the crystalline conformation of the chains is non-planar and little conjugation along the chains is expected due to the presence of the chalcogenide atom. Chain flexibility and rearrangement upon doping will be discussed. Calculations have indicated that the rotations about C-X (X=O, S) bonds and stretching of the ⟨C-X-C angle can facilitate the intercalation of a dopant moiety in a manner that conduction can occur via an interchain mechanism. A dopant intercalation model will be presented and its consequences on conductivity anisotropy will be discussed.
Ferritin heavy chain (FTH1) exerts significant antigrowth effects in breast cancer cells by inhibiting the expression of c‐MYC (2021)

Overexpression of ferritin heavy chain (FTH1) often associates with good prognosis in breast cancer (BCa), particularly in the triple-negative subtype (triple-negative breast cancer). However, the mechanism by which FTH1 exerts its possible tumor suppressor effects in BCa is not known. Here, we examined the bearing of FTH1 silencing or overexpression on several aspects of BCa cell growth in vitro. FTH1 silencing promoted cell growth and mammosphere formation, increased c-MYC expression, and reduced cell sensitivity to chemotherapy. In contrast, FTH1 overexpression inhibited cell growth, decreased c-MYC expression, and sensitized cancer cells to chemotherapy; silencing of c-MYC recapitulated the effects of FTH1 overexpression. These findings show for the first time that FTH1 suppresses tumor growth by inhibiting the expression of key oncogenes, such as c-MYC.
Spacial Resolution Enhancement for Integrated Magnetic Probe by Two-Step Removal of Si-Substrate Beneath the Coil (2015)

This paper presents an enhancement of high spacial resolution magnetic probe for the applications of measuring magnetic fields emitted from cryptography micro-electronic devices. The on-chip sensing system includes a magnetic pick-up coil, three-stage low-noise amplifier, mixer, and low-pass filter. Noise problems are reduced by the proposal of using the down-conversion mixer. A two-step removal of Si-substrate (Si-SUBS) areas is also proposed by applying a focused-ion-beam process to avoid eddy currents that reduces the coil sensitivity. Four probe chips are fabricated in a 0.18 um CMOS five-metal layer process with different coil sizes and with/without Si-SUBS removals. Experimental results on a thin wire and micro-strip line show the proposed system achieves high spacial resolution and sensitivity for near-field magnetic scanning.
The Rearrangement of Cyclohexene Oxides with Magnesium Bromide Etherate1-3 (1957)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Rearrangement of Cyclohexene Oxides with Magnesium Bromide Etherate1-3Saiyid M. Naqvi, Jerome P. Horwitz, and Robert FillerCite this: J. Am. Chem. Soc. 1957, 79, 23, 6283–6286Publication Date (Print):December 1, 1957Publication History Published online1 May 2002Published inissue 1 December 1957https://pubs.acs.org/doi/10.1021/ja01580a046https://doi.org/10.1021/ja01580a046research-articleACS PublicationsRequest reuse permissionsArticle Views517Altmetric-Citations55LEARN 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
Effect of residence time and suspension density on crystal size distributions in continuous crystallization (1967)

A recently developed model relating crystal size distri­ bution, nucleation and growth kinetics and operating para­ meters was compared with experimental crystal size distribu­ tion data obtained from a continuous, mixed suspension, mixed effects of residence time (or production rate) and suspension density upon the resulting size distributions were extensively investigated for several crystal systems. The results demon­ strated that the nucleation rate can be related to crystal growth rate and suspension density as a simple power function over a wide range of levels of supersaturation. Steady state correlations were developed to explain observed phenomena relating nuclei population density, growth rate and nucleation rate to residence time and suspension density. It was observed that decreasing residence time resulted in a significant overall size distribution degra­ dation; whereas, suspension density had little or no effect on the overall size distributions. These observations indi­ cate that heterogeneous nucleation is a significant factor in new crystal formation. The model was used to simulate crystal size distribution dynamics for step changes in solute feed concentration and in residence time from initial steady state conditions. Quali­ tative agreement between theory and experimental observations
MODELING AND CHARACTERIZATION OF OSCILLATOR CIRCUITS BY VAN DER POL MODEL USING PARAMETER ESTIMATION (2012)

In this paper, we present a new method for the modeling and characterization of oscillator circuit with a Van Der Pol (VDP) model using parameter identification. We also discussed and investigated the problem of estimation in nonlinear system based on time domain data. The approach is based on an appropriate state space representation of Van der Pol oscillator that allows an optimal parameter estimation. Using sampled output voltage signal, model parameters are obtained by an iterative identification algorithm based on Output Error method. Normalization issues are fixed by an appropriate transformation allowing a quickly global minimum search. Finally, the proposed estimation method is tested and validated using simulation data from a 1 GHz oscillator circuit in GaAs technology.
Lightweight and Highly Conductive Aerogel-like Carbon from Sugarcane with Superior Mechanical and EMI Shielding Properties (2015)

Aerogel-like carbon (ALC) based on sugarcane was prepared by a hydrothermal carbonization (HTC) and postpyrolysis process. The ALC prepared from sugarcane exhibits a typical cellular structure with low density, high specific surface area, and excellent electrical conductivity. Although with low density, the specific elastic modulus of ALC can reach 484.7 MPa·cm3/g, based on our knowledge, this is the strongest aerogel-like carbon ever reported. The average electromagnetic interference (EMI) shielding effectiveness of ALC in X band is 51.0 dB with an absorption-dominant shielding feature. More importantly, the specific surface area of ALC, which has subtle influence on the properties of ALC, can be fined tuned by the HTC process. Considering the chemical-free fabrication process with sustainable raw materials, adjustable structure, excellent mechanical properties, the lightweight and highly conductive ALCs are postulated to have promising potential applications in sensor, energy conversion and storage, and EMI shielding.
Leishmania-Infected Macrophages Are Targets of NK Cell-Derived Cytokines but Not of NK Cell Cytotoxicity (2011)

Natural killer (NK) cells are important components of a protective immune response against intracellular pathogens such as Leishmania parasites, which reside within myeloid cells. Previous in vivo studies in murine cutaneous or visceral leishmaniasis showed that NK cells are activated by conventional dendritic cells in a Toll-like receptor 9-, interleukin-12 (IL-12)-, and IL-18-dependent manner during the early phase of infection and help to restrict the tissue parasite burden by unknown mechanisms. Here, we tested whether NK cells contribute to the control of Leishmania infections by lysing or by activating infected host cells. Coculture experiments revealed that activated NK cells from poly(I:C)-treated mice readily killed tumor target cells, whereas Leishmania infantum- or L. major-infected macrophages or dendritic cells remained viable. Infection with Leishmania did not significantly alter the expression of NK cell-activating molecules (retinoic acid early transcript alpha [Rae-1α], mouse UL16-binding protein-like transcript 1 [MULT-1], CD48) or inhibitory molecules (major histocompatibility complex [MHC] class I, nonclassical MHC class 1b molecule Qa-1) on the surface of myeloid cells, which offers an explanation for their protection from NK cell cytotoxicity. Consistent with these in vitro data, in vivo cytotoxicity assays revealed poor cytolytic activity of NK cells against adoptively transferred infected wild-type macrophages, whereas MHC class I-deficient macrophages were efficiently eliminated. NK cells activated by IL-12 and IL-18 stimulated macrophages to kill intracellular Leishmania in a cell contact-independent but gamma interferon-, tumor necrosis factor-, and inducible nitric oxide synthase-dependent manner. We conclude that Leishmania parasites, unlike viruses, do not render infected myeloid cells susceptible to the cytotoxicity of NK cells. Instead, soluble products of NK cells trigger the leishmanicidal activity of macrophages.
Control of axonophilic migration of oligodendrocyte precursor cells by Eph–ephrin interaction (2004)

The migration of oligodendrocyte precursor cells (OPCs) is modulated by secreted molecules in their environment and by cell-cell and matrix-cell interactions. Here, we ask whether membrane-anchored guidance cues, such as the ephrin ligands and their Eph receptors, participate in the control of OPC migration in the optic nerve. We postulate that EphA and EphB receptors, which are expressed on axons of retinal ganglion cells, interact with ephrins on the surface of OPCs. We show the expression of ephrinA5, ephrinB2 and ephrinB3 in the migrating OPCs of the optic nerve as well as in the diencephalic sites from where they originate. In addition, we demonstrate that coated EphB2-Fc receptors, which are specific for ephrinB2/B3 ligands, induce dramatic changes in the contact and migratory properties of OPCs, indicating that axonal EphB receptors activate ephrinB signaling in OPCs.Based on these findings, we propose that OPCs are characterized by an ephrin code, and that Eph-ephrin interactions between axons and OPCs control the distribution of OPCs in the optic axonal tracts, and the progress and arrest of their migration.
A Numerical Evaluation of Entanglement Sharing Protocols Using Quantum LDPC CSS Codes (2012)

Entangled states play crucial roles in quantum information theory and its applied technologies. In various protocols such as quantum teleportation and quantum key distribution, a good entangled state shared by a pair of distant players is indispensable. In this paper, we numerically examine entanglement sharing protocols using quantum LDPC CSS codes. The sum-product decoding method enables us to detect uncorrectable errors, and thus, two protocols, Detection and Resending (DR) protocol and Non-Detection (ND) protocol are considered. In DR protocol, the players abort the protocol and repeat it if they detect the uncorrectable errors, whereas in ND protocol they do not abort the protocol. We show that DR protocol yields smaller error rate than ND protocol. In addition, it is shown that rather high reliability can be achieved by DR protocol with quantum LDPC CSS codes.
Helicobacter pylori eradication treatment and the risk of gastric adenocarcinoma in a Western population (2018)

Eradication treatment for <i>H. pylori</i> seems to counteract the development of gastric adenocarcinoma and non-cardia gastric adenocarcinoma in this Western population.
Cardiovascular disease risk factors and DNA methylation at theLINE-1repeat region in peripheral blood from Samoan Islanders (2011)

Lower levels of LINE-1 methylation in peripheral blood have been previously associated with risk of developing non-communicable conditions, the most well-explored of these being cancer, although recent research has begun to link altered LINE-1 methylation and cardiovascular disease. We examined the relationship between LINE-1 methylation and factors associated with metabolic and cardiovascular diseases through quantitative bisulfite pyrosequencing in DNA from peripheral blood samples from participants of the Samoan Family Study of Overweight and Diabetes (2002-03). The sample included 355 adult Samoans (88 men and 267 women) from both American Samoa and Samoa. In a model including all sample participants, men had significantly higher LINE-1 methylation levels than women (p=0.04), and lower levels of LINE-1 methylation were associated with higher levels of fasting LDL (p=0.02) and lower levels of fasting HDL (p=0.009). The findings from this study confirm that DNA "global" hypomethylation, (as measured by methylation at LINE-1 repeats) observed previously in cardiovascular disease is associated with altered levels of LDL and HDL in peripheral blood. Additionally, these findings strongly argue the need for further research, particularly including prospective studies, in order to understand the relationship between LINE-1 DNA methylation measured in blood and risk factors for cardiovascular disease.