gebhart/patrepeval huggingface dataset:
Acoustic environment identification using unsupervised learning (2014)

Acoustic environment leaves its characteristic signature in the audio recording captured in it. The acoustic environment signature can be modeled using acoustic reverberations and background noise. Acoustic reverberation depends on the geometry and composition of the recording location. The proposed scheme uses similarity in the estimated acoustic signature for acoustic environment identification (AEI). We describe a parametric model to realize acoustic reverberation, and a statistical framework based on maximum likelihood estimation is used to estimate the model parameters. The density-based clustering is used for automatic AEI using estimated acoustic parameters. Performance of the proposed framework is evaluated for two data sets consisting of hand-clapping and speech recordings made in a diverse set of acoustic environments using three microphones. Impact of the microphone type variation, frequency, and clustering accuracy and efficiency on the performance of the proposed method is investigated. Performance of the proposed method is also compared with the existing state-of-the-art (SoA) for AEI.
Spectral band selection for the characterization of salinity status of soils (1993)

Reflectance spectra of salt-affected surface soil samples have been measured at 10 nm spectral resolution between 495 nm and 2395 nm. The samples were collected in California (41) and in Hungary (49) to compare the effect of different salinization and alkalization processes on reflectance properties. The data set consisted of 272 spectra having 2–12 cases (repetitions) for each sample. Sixteen classes were defined based on chemical soil properties, accounting for changes in pH, electrical conductivity (EC), and exchangeable sodium percentage (ESP), of which 12 were represented in the sample. The reflectance data set was statistically analyzed using a modified stepwise principal component analysis (MSPCA) approach to select 1, 2, 3, … bands for classification of salinity status. Recognition of the above-described classification was tested by discriminant function analysis (DFA). Its results can be applied in further studies for weighing spectral bands according to their sensitivity to the chosen classification as well as in defining broad, but still potentially sufficient bands. Recognition accuracy of salinity status was 91%, 90%, and 88% with 10 nm, 20 nm, and 40 nm bands, respectively, for the entire data set. Comparison with PCA using all bands showed only slight differences. The California soil samples had more distinct spectral characteristics than the Hungarian ones. Key spectral ranges were identified in the visible (550–770 nm), near-infrared (900–1030 nm, 1270–1520 nm), and middle infrared (1940–2150 nm, 2150–2310 nm, 2330–2400 nm) portion of the spectrum at 20 nm, 40 nm, and 80 nm spectral resolution. Two of these (1270–1520 nm and 1940–2150 nm) cannot be used with satellite data due to water vapor absorption in the atmosphere. In addition, six broad bands in these ranges were identified, leading to considerably higher overall accuracy than currently available Landsat MSS, TM, and SPOT XS, in terms of spectral recognition of salinity status.
Sky's The Limit (1989)

Would any of your readers be interested in seeing a television programme in the making? London Weekend Television's studios are currently being used by Sky Television to make programmes for their satellite channel. We are looking for people to take part in the studio audience for an entertaining afternoon for the all new Sale of the Century, a fast and furious quiz where correct answers mean money in the bank, and tha ability to 'buy' prizes from 'the sale'.
Paludisme chloroquino-résistant en provenance du Rwanda (1984)

Il est necessaire que le praticien travaillant dans ces regions soit averti de l'existence d'une resistance de P.f. vis-a-vis de cette medication et de la possibilite de survenue d'un acces palustre malgre l'observation scrupuleuse d'une chimioprophylaxie a la chloroquine. Dans ce cas le traitement classique a la chloroquine peut malgre tout etre maintenu mais il devra etre complete par une prise unique de pyrimethamine 75 mg+sulfadoxine 1500 mg ou encore par de la quinine 1500 mg pendant 3 ou 4 jours associee a de la tetracycline 1500 mg pendant 10 jours
Mode Count and Modal Density of Isotropic Circular Cylindrical Shells Using a Modified Wavenumber Space Integration Method (2014)

A new method based on the wavenumber space integration algorithm is proposed in order to obtain mode count and modal density of circular cylindrical shells. Instead of the simplified equation of motion, the exact equation is applied in mode count calculations. Modal plots are changed significantly in the k-space when using the exact equation. Mode repetition in cylindrical shells is represented by additional mode count curves in the k-space. On the other hand, a novel technique is presented in order to implement boundary condition effects in mode count and modal density calculations. Integrating these two significant corrections, a modified wavenumber space integration (MWSI) method is developed. Mode count and modal densities of three shells with different geometrical and acoustical properties are obtained using the MWSI method and conventional WSI. Results are verified using the exact mode count calculations. Moreover, effects of geometrical properties are studied on mode count plots in the k-space. Modal densities are obtained for cylindrical shells of different lengths, radii, and thicknesses. Finally, modal densities of cylindrical shells are compared to flat plates of the same size and boundary condition. Interesting results are obtained which will contribute in calculation of acoustic radiation efficiency and sound transmission in cylindrical shells.
Surface activity of proteins: chemical and physicochemical modifications (2021)

Introduction: surface activity and functional properties of proteins enhanced hydrophobicity - formation and properties of surface-active proteins increased anionic charge - conformational and functional properties deamidation and phosphorylation for food protein modification preparation and functional properties of protein-polysaccharide conjugates enzymatic modification as a tool for alteration of safety and quality of food proteins denaturation of globular proteins in relation to their functional properties protein-surfactant interactions factors affecting applications of native and modified proteins in food products.
Passively mode-locked Yb:KLu(WO4)2 oscillators (2005)

We demonstrate passive mode locking based on the novel monoclinic double tungstate crystal Yb:KLu(WO4)2. We report the shortest pulses ever produced with an Yb-doped tungstate laser using a semiconductor saturable absorber. A pulse duration of 81 fs has been achieved for an average power of 70 mW at 1046 nm. We compare the performance of the polarization oriented parallel to the Nm- and Np-crystallo-optic axes. Results in the femtosecond and picosecond regime are presented applying either Ti:sapphire or diode laser pumping. The great potential of Yb:KLu(WO4)2 as an active medium for ultrashort pulses is demonstrated for the first time, to our knowledge.
Transvenous catheter ablation of a posteroseptal accessory pathway in a patient with coexistent posteroseptal and right-sided accessory pathways. (1988)

Transvenous catheter ablation techniques have recently been used successfully in blocking posteroseptal accessory pathways in patients with Wolff-Parkinson-White syndrome (WPWS). We report the case of a patient in the People's Republic of China who had WPWS and posteroseptal and right anterolateral accessory pathways, and who had failed to respond to conventional antiarrhythmic drug therapy. The posteroseptal accessory pathway was ablated successfully. During 23 months of follow-up there were no complications; this led us to conclude that this technique can be used to achieve successful long-term ablation of this accessory pathway. This technique obviates the need for drug therapy and direct surgical ablation; it offers, as well, the advantages of shorter hospitalization, lower cost, a much shorter convalescence, and less discomfort to the patient.
Probing the mechanisms of low immunogenicity of a lipocalin allergen, Bos d 2, in a mouse model (2003)

The results exclude several mechanisms of peripheral tolerance as an explanation for the poor immune response against Bos d 2, and suggest that the allergen is recognized by a low number of specific T cells. The weak immunogenicity of Bos d 2 may be related to its allergenicity.
Negative differential resistance in ultrashort bulk MOSFETs (2003)

In our contribution negative differential resistance and single electron switching events in the channel of bulk MOSFETs with channel lengths down to 30 nm are demonstrated. First, reproducible unexpected periodic transconductance oscillations in the I/sub D/xV/sub G/ characteristics of nMOSFETs are presented. The oscillations, present from sub-threshold up to strong inversion, are reproducible from sample to sample and with temperature cycling. No dependency of the oscillation period on gate oxide thickness or channel length could be observed and the period of the oscillations does not change in magnetic fields up to 15 T. Various electric transport models for small size MOS systems are analyzed. For several reasons, Coulomb blockade seems to be a rather plausible explanation for the observed effects. In the second part, another single electron switching phenomenon is studied. Namely, oxide traps are used as a probe into the local channel surface potential. Locking at the bias point dependence of the random telegraph signal (RTS) it is possible to estimate the trap location along the channel. It is shown that the behavior of the RTS does depend upon the properties of the trap and channel electrons, making RTS analysis a valuable tool to study effects as coulomb scattering, electron gas heating and the mechanisms that influence electrical channel formation in very small area devices.
Selective ring-opening polymerization of 1,4-anhydro-2,3-di-O-benzyl-α-D-xylopyranose and synthesis of stereoregular (1 → 5)-.alpha.-D-xylofuranan (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelective ring-opening polymerization of 1,4-anhydro-2,3-di-O-benzyl-α-D-xylopyranose and synthesis of stereoregular (1 → 5)-.alpha.-D-xylofurananToshiyuki Uryu, Junichi Yamanouchi, Shuji Hayashi, Hidehiko Tamaki, and Kei MatsuzakiCite this: Macromolecules 1983, 16, 2, 320–326Publication Date (Print):February 1, 1983Publication History Published online1 May 2002Published inissue 1 February 1983https://pubs.acs.org/doi/10.1021/ma00236a030https://doi.org/10.1021/ma00236a030research-articleACS PublicationsRequest reuse permissionsArticle Views163Altmetric-Citations30LEARN 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
Wearable Flexible Reconfigurable Antenna Integrated With Artificial Magnetic Conductor (2017)

This letter presents a wearable flexible reconfigurable folded slot antenna. The antenna is composed of a folded slot and a stub where the reconfigurability is achieved by turning a p-i-n diode on and off, which alters the radiation characteristics of the stub. The operating frequency and polarization of the slot and stub are different. Hence, a polarization-dependent dual-band artificial magnetic conductor (AMC) surface is integrated with the antenna to improve its radiation performance and to reduce the specific absorption rate (SAR). The antenna is designed and fabricated on a flexible substrate, and its performance is measured for both flat and curved configurations. The measurements show an excellent agreement with the simulations. To examine its performance as a wearable antenna, it is measured on a human body. Simulations show that the SAR level is reduced when the AMC surface is used as an isolator. The proposed wearable antenna structure can be used for wireless body area network (WBAN) and Worldwide Interoperability for Microwave Access (WiMAX) body-worn wireless devices.
Motion planning in dynamic environments using the relative velocity paradigm (2002)

A simple and efficient approach to the computation of avoidance maneuvers among moving obstacles is presented. The method is discussed for the case of a single maneuvering object avoiding several obstacles moving on known linear trajectories. The original dynamic problem is transformed into several static problems using the relative velocity between the maneuvering object and each obstacle. The static problems are converted into a single problem by means of a vector transformation, and the set of velocity vectors guaranteeing the avoidance of all the obstacles is computed. Within this set, the best maneuver for the particular approach can be selected. The geometric background of this approach is developed for both 2-D and 3-D cases, and the method is applied to an example of a 3-D avoidance maneuver.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Data from Hepatocellular Carcinoma Associated with Liver-Gender Disruption in Male Mice (2023)

&lt;div&gt;Abstract&lt;p&gt;Hepatocellular carcinoma (HCC) is a male-predominant cancer associated with chronic hepatitis. Like human viral hepatitis, murine &lt;i&gt;Helicobacter hepaticus&lt;/i&gt; infection produces inflammation and HCC with a masculine bias. We used this model to identify potential mechanisms of male HCC predisposition. Male weanling A/JCr mice (&lt;i&gt;n&lt;/i&gt; = 67) were gavaged with &lt;i&gt;H. hepaticus&lt;/i&gt; or vehicle. At 1 year, mice were distributed into four groups: surgical castration, chemical castration, castration followed by dihydrotestosterone supplementation, or sexually intact controls. Responses to infection were compared with IFN-γ challenge alone. At 21 months, there was no significant difference in hepatitis between groups. Neither castration nor androgen receptor agonism altered tumor incidence. Infected mice with severe, but not mild, disease exhibited a mosaic of alterations to sexually dimorphic genes and microsomal long-chain fatty acids. By microarray, tumorigenic hepatitis was strongly associated with liver-gender disruption, defined as the loss of a gender-identifying hepatic molecular signature. IFN-γ alone produced similar changes, demonstrating a role for proinflammatory cytokines in this process. In conclusion, hepatocarcinogenesis in male mice with chronic hepatitis is maturationally imprinted and androgen-independent. Proinflammatory cytokines may promote HCC in a male-predominant fashion due to high sensitivity of the masculinized liver to loss of sex-specific transcriptional balance. Liver-gender disruption has pleiotropic implications for hepatic enzyme activity, lipid processing, nuclear receptor activation, apoptosis, and proliferation. We propose a multistep model linking chronic hepatitis to liver cancer through cytokine-mediated derangement of gender-specific cellular metabolism. This model introduces a novel mechanism of inflammation-associated carcinogenesis consistent with male-predominant HCC risk. [Cancer Res 2007;67(24):11536–46]&lt;/p&gt;&lt;/div&gt;
The intestinal microbiota in health and disease: the influence of microbial products on immune cell homeostasis (2009)

Associations between alterations in the microbiota and human disease implicate intestinal microbial signals in shaping immune responses. These signals are recognized by innate immune cells and influence the ability of these cells to modulate both the local and systemic immune response.
Ga2O3 Schottky rectifiers with 1 ampere forward current, 650 V reverse breakdown and 26.5 MW.cm-2 figure-of-merit (2018)

A key goal for Ga2O3 rectifiers is to achieve high forward currents and high reverse breakdown voltages. Field-plated β-Ga2O3 Schottky rectifiers with area 0.01 cm2, fabricated on 10 μm thick, lightly-doped drift regions (1.33 x 1016 cm-3) on heavily-doped (3.6 x 1018 cm-3) substrates, exhibited forward current density of 100A.cm-2 at 2.1 V, with absolute current of 1 A at this voltage and a reverse breakdown voltage (VB) of 650V. The on-resistance (RON) was 1.58 x 10-2 Ω.cm2, producing a figure of merit (VB2/RON) of 26.5 MW.cm-2. The Schottky barrier height of the Ni was 1.04 eV, with an ideality factor of 1.02. The on/off ratio was in the range 3.3 x 106 - 5.7 x 109 for reverse biases between 5 and 100V. The reverse recovery time was ∼30 ns for switching from +2V to -5V. The results show the capability of β-Ga2O3 rectifiers to achieve exceptional performance in both forward and reverse bias conditions.
Inhibition of the Hypoxia-Inducible Factor 1α–Induced Cardiospecific HERNA1 Enhance-Templated RNA Protects From Heart Disease (2019)

HERNA1 is a novel heart-specific noncoding RNA with key regulatory functions in modulating the growth, metabolic, and contractile gene program in disease, and reveals a molecular target amenable to therapeutic exploitation.
Unidirectional ad hoc routing with efficient route reconstruction using relay control of route requests (2005)

This paper evaluates performance of on demand ad hoc routing protocols to handle unidirectional routing protocols. Ad hoc networks are consisted of nodes of various transmission range in many cases. Thus routing protocols should support route construction using unidirectional links to provide high connectivity and high routing performance with low control overhead. Among existing routing protocols, DSR is typical protocol to support unidirectional routing, but its optimization mechanism is not effective for unidirectional links and generates substantial control traffic. We have previously proposed a new on demand ad hoc routing method for unidirectional routing called FOCUS. In this paper, FOCUS is evaluated and compared with DSR. Results of simulation show that FOCUS outperforms DSR in the number of transmitted RREQ packets and data packet transmission delay while maintaining route construction performance, and that it is especially effective in high density network.
Scalable Passive Sleep Monitoring Using Mobile Phones: Opportunities and Obstacles (2017)

We find that mobile phones provide adequate sleep monitoring in typical use cases, and that our methods generalize well to a broader population than has previously been studied. However, we also observe several types of data artifacts when collecting data in uncontrolled settings. Some of these can be resolved through corrections, but others likely impose a ceiling on the accuracy of sleep prediction for certain subjects. Future research will need to focus more on the understanding of people's behavior in their natural settings in order to develop sleep monitoring tools that work reliably in all cases for all people.
Organic Acid Enhancement of Pelargonic Acid (2008)

Selected fatty acids, such as pelargonic acid and caprylic acid, are effective nonselective herbicides for a wide spectrum of annual weed species. Greenhouse and field studies evaluated the potential of certain food-grade organic acids to enhance herbicide activity of pelargonic acid-based formulations. The addition of diammonium succinate and succinic acid improved the efficacy of a pelargonic acid formulation from 117 to 200% in the greenhouse. l-Lactic acid and glycolic acid enhanced the efficacy of pelargonic acid formulations on velvetleaf and common lambsquarters in the greenhouse by 126 to 168% and in the field by 117 to 138%. Thus, combinations of fatty and organic acids with selected emulsifiers can be highly effective as safe, nonselective herbicides.Nomenclature: Caprylic acid, pelargonic acid, common lambsquarters, Chenopodium album L., CHEAL, velvetleaf, Abutilon theophrasti Medic. ABUTH
Split LDPC Codes for Hybrid ARQ (2007)

In this paper, we propose a new rate-control scheme, called splitting, to construct low-rate codes from high-rate codes by splitting rows of the parity-check matrices of LDPC codes, which can construct ratecompatible LDPC codes having good initial transmission performance. Good low-rate codes can be constructed by making the number of distinct check node degrees as small as possible after splitting. The proposed scheme achieves good cycle property, low decoding complexity, and fast convergence speed, especially compared to the puncturing. Especially, rate-compatible repeat accumulate-type LDPC (RA-Type LDPC) code is constructed using splitting, which covers the code rates from 1/3 to 4/5. Through simulation it is shown that this code outperforms other rate-compatible RA-Type LDPC codes for all rates and can be decoded conveniently and efficiently.
Isolation, phylogeny and evolutionary analysis of Pto-type disease resistance gene analogues from a Cucumis hystrix introgression line of cucumber (C. sativus) (2010)

Multiple resistances to bacterial and fungal pathogens due to Pto-type serine/threonine kinase (STK) has made this protein a promising candidate for resistance breeding and provided motivation to identify functional Pto-type genes from other plant species. In our present paper, eight classes of STKs were isolated from the cucumber (Cucumis sativus L.) introgressed line 5211S that shows downy mildew resistance. Phylogenetic analysis revealed six classes of cucumber Pto-type resistance gene analogues (RGAs). Multiple sequence alignment of deduced amino acid sequences from these Pto-type RGAs and Pto showed the typical structure of a Pto protein. Non-synonymous to synonymous nucleotide substitution (Ka : Ks) ratios for these Pto-type RGAs were less than 1, indicating that purifying selection played an important role in the evolutionary process. The Pto-type RGAs identified in this study will permit further genetic characterisation that may lead to the development of specific or even broad-spectrum pathogen resistance in 5211S.
Magnetostatic Surface-Wave Transducers (1979)

Magnetostatic surface-wave (MSSW) transducer theory is extended and generalized. A Fourier transform relation is established between MSSW field amplitudes and transducer spatial current distribution. Expressions are developed for the radiation resistance of periodic meander and grating transducers, spatial harmonic amplitudes, and radiation resistance for uniform and nonuniform current distribution models. An expression is given for the radiation resistance of apodized transducers. The results enable one to predict transducer frequency response for a specified weighting of transducer element width, Iength and spacing.