gebhart/patrepeval huggingface dataset:
TSVD as a Statistical Estimator in the Latent Semantic Analysis Paradigm (2014)

The aim of this paper is to present a new point of view that makes it possible to give a statistical interpretation of the traditional latent semantic analysis (LSA) paradigm based on the truncated singular value decomposition (TSVD) technique. We show how the TSVD can be interpreted as a statistical estimator derived from the LSA co-occurrence relationship matrix by mapping probability distributions on Riemanian manifolds. Besides, the quality of the estimator model can be expressed by introducing a figure of merit arising from the Solomonoff approach. This figure of merit takes into account both the adherence to the sample data and the simplicity of the model. In our model, the simplicity parameter of the proposed figure of merit depends on the number of the singular values retained after the truncation process, while the TSVD estimator, according to the Hellinger distance, guarantees the minimal distance between the sample probability distribution and the inferred probabilistic model.
Synthesis of amphiphilic polyelectrolyte block copolymers using "living" radical polymerization. Application as stabilizers in emulsion polymerization (1998)

This paper describes the synthesis of amphiphilic block copolymers composed of an ionic poly(styrenesulfonate) first segment and a hydrophobic polystyrene second one, using TEMPO-mediated “living” radical polymerization. These copolymers proved to be efficient stabilizers in the emulsion polymerization of styrene.
Recursive weighted median filters admitting negative weights and their optimization (2000)

A recursive weighted median (RWM) filter structure admitting negative weights is introduced. Much like the sample median is analogous to the sample mean, the proposed class of RWM filters is analogous to the class of infinite impulse response (IIR) linear filters. RWM filters provide advantages over linear IIR filters, offering near perfect "stopband" characteristics and robustness against noise. Unlike linear IIR filters, RWM filters are always stable under the bounded-input bounded-output criterion, regardless of the values taken by the feedback filter weights. RWM filters also offer a number of advantages over their nonrecursive counterparts, including a significant reduction in computational complexity, increased robustness to noise, and the ability to model "resonant" or vibratory behavior. A novel "recursive decoupling" adaptive optimization algorithm for the design of this class of recursive WM filters is also introduced. Several properties of RWM filters are presented, and a number of simulations are included to illustrate the advantages of RWM filters over their nonrecursive counterparts and IIR linear filters.
A novel fuzzy logic controller and antiwindup PI controller for three-phase PWM Rectifier (2009)

This paper presents a novel fuzzy logic controller (FLC) for three-phase PWM Rectifier.The fuzzy logic controller is employed in the outer voltage loop. In order to improve the performances of current loop, the antiwindup PI controller of inner current controller is used instead of the traditional PI controller. The complete control scheme of the three-phase PWM Rectifier is implemented in real time using TMS320LF2812 digital signal processor. The simulation and experiment are carried out for the proposed system. The performances of the proposed FLC-based three-phase PWM rectifier are investigated. The results show that the proposed FLC can not only enhance the robustness of the system, but also improve the steady-state precision and dynamic performance.
Theory and operation of 2-D array piezoelectric micromachined ultrasound transducers (2008)

Piezoelectric micromachined ultrasound transducers (pMUTs) are a new approach for the construction of 2-D arrays for forward-looking 3-D intravascular (IVUS) and intracardiac (ICE) imaging. Two-dimensional pMUT test arrays containing 25 elements (5 x 5 arrays) were bulk micromachined in silicon substrates. The devices consisted of lead zirconate titanate (PZT) thin film membranes formed by deep reactive ion etching of the silicon substrate. Element widths ranged from 50 to 200 μm with pitch from 100 to 300 μm. Acoustic transmit properties were measured in de-ionized water with a calibrated hydrophone placed at a range of 20 mm. Measured transmit frequencies for the pMUT elements ranged from 4 to 13 MHz, and mode of vibration differed for the various element sizes. Element capacitance varied from 30 to over 400 pF depending on element size and PZT thickness. Smaller element sizes generally produced higher acoustic transmit output as well as higher frequency than larger elements. Thicker PZT layers also produced higher transmit output per unit electric field applied. Due to flexure mode operation above the PZT coercive voltage, transmit output increased nonlinearly with increased drive voltage. The pMUT arrays were attached directly to the Duke University T5 Phased Array Scanner to produce real-time pulse-echo B-mode images with the 2-D pMUT arrays.
Robust approximation of Giesekus flow by nonconforming finite elements (2011)

International audience
Phonon anomalies and phonon-spin coupling in oriented PbFe0.5Nb0.5O3thin films (2011)

We present Raman data on both single-crystal and thin-film samples of the multiferroic PbFe${}_{0.5}$Nb${}_{0.5}$O${}_{3}$ (PFN). We show first that the number and selection rules of Raman lines are compatible with a face-centered-cubic $\mathit{Fm}$-3m structure, as is known in other $\mathit{AB}$O${}_{3}$ relaxors, such as PbSc${}_{1/2}$Ta${}_{1/2}$O${}_{3}$. We then compare Raman data with anomalies in magnetization and the dielectric constant near the magnetic-phase-transition temperature (${T}_{N}$), the diffuse ferroelectric-phase-transition temperature (${T}_{m}$), and the pseudostructural-phase transition temperature (Burns temperature \ensuremath{\sim}${T}_{B}$). The temperature evolution of the Raman spectra for the PFN film shows measurable changes in phonon positions, intensities, and full width at half maxima near 200, 410, and 650 K---temperatures that match well with experimentally observed ${T}_{N}$, ${T}_{m}$, and ${T}_{B}$, respectively. The increase in frequency with increasing temperature for the lowest-energy ${F}_{2g}$ phonon mode is particularly unexpected. These changes suggest the transition of the crystal structure from an ordered phase to a disordered phase near ${T}_{B}$. The Raman study revealed phonon anomalies in the vicinity of ${T}_{m}$ and ${T}_{N}$ that are attributed to the dynamical behavior of polar nanoregions and spin-phonon coupling owing to its relaxor and multiferroic nature, respectively, which is well supported by dielectric and magnetic properties of the PFN thin film. Softening of the Fe-O mode was observed near the ${T}_{N}$. We correlate the anomalous shift of the Fe-O mode frequency with the normalized square of the magnetization sublattice; agreement with the experimental results suggests strong spin-phonon coupling near ${T}_{N}$ owing to phonon modulation of the superexchange integral; however, the shifts in frequency with temperature are small (3 cm${}^{\ensuremath{-}1}$).
On the crossroads of current polyelectrolyte theory and counterion-specific effects (2015)

Aqueous solutions of polyelectrolytes are studied here by means of neutron scattering, with emphasis on backbone hydrophobicity and counter ion specific effects. Ionene polyelectrolytes with varying chain charge density and different counter ions are considered. Their neutron scattering data feature a number of aspects and trends that clearly deviate from the predictions of the existing theory. Ionenes challenge the current hydrophilic-hydrophobic classification of water-soluble polyelectrolytes. The hydrophobic character of their hydrocarbon backbone emerges only for very low chain charge densities (at 15% of charged monomers), which is significantly lower than for other polyelectrolytes with a more complex structure. Universality in the counter ion specific effect seen in ionene solutions with Br(-) or F(-) counterions is established. The polyelectrolyte peak in the scattering spectra of Br-ionenes disappears beyond a specific charge concentration, which is identical across all ionene chain charge densities. In addition, scattering spectra of Br-ionenes and F-ionenes feature contrasting temperature trends, which are accentuated with decreasing chain charge density. Our interpretation of the F-Br effect, based on the different hydration properties of the counter ions, is supported by additional NMR measurements on ionenes with mixed counter ion clouds. Overall, the study of ionene polyelectrolytes points clearly to the need for combining the scaling concepts with those of ion specificity, to obtain a theoretical framework encompassing the wealth of phenomena occurring in polyelectrolyte solutions.
Antimicrobial Efficiency and Surface Interactions of Quaternary Ammonium Compound Absorbed on Dielectric Barrier Discharge (DBD) Plasma Treated Fiber-Based Wiping Materials (2019)

The physicochemical interactions between alkyldimethylbenzylammonium chloride (ADBAC) as disinfectant and three commercial wiping materials made from 100% polyester (PET), 55%cellulose/45%PET (blend), and 100% cellulose were investigated after treatment with dielectric barrier discharge (DBD) plasma at atmospheric pressure. Wipe material type in terms of cellulose content, liquor ratio, and immersion time demonstrated a significant influence on the adsorption of ADBAC. The higher the content of cellulose in the material, the higher is the adsorption of ADBAC active ingredient. The antimicrobial tests confirm that the ADBAC adsorbed on pure cellulosic material is inactivated losing its bactericidal activity, while 100% PET and blend wipes showed good antimicrobial efficacy. XPS analysis demonstrates the strong interactions of ADBAC with the plasma-generated oxygen species in the polyester-containing wipes surface. Unexpectedly, plasma-treated blend wipe displays a reverse antimicrobial effect compared to untreated samples, performing better in Gram-negative bacteria. The best result was obtained in the plasma treated 100% polyester wipe showing an improvement of about 20% in Gram-positive bacteria and an excellent performance in Gram-negative ones. This method allows the unprecedented use of pure polyester as effective wiping material for surface disinfection eliminating the major drawback of pure polyester, its high hydrophobicity.
Using Iterative Repair to Improve the Responsiveness of Planning and Scheduling (2000)

The majority of planning and scheduling research has focused on batch-oriented models of planning. This paper discusses the use of iterative repair techniques to support a continuous planning process as is appropriate for autonomous spacecraft control. This allows the plan to incorporate execution feedback- such as early or late completion of activities, and over-use or under-use of resources. In this approach, iterative repair supports continuous modification and updating of a current working plan in light of changing operating context..
Genotyping for Human Platelet Alloantigen Polymorphisms: Applications in the Diagnosis of Alloimmune Platelet Disorders (2008)

Molecular typing for platelet allelic polymorphisms was first made possible by discovery of the HPA-1a/1b single nucleotide polymorphism in 1989. Since then, six other biallelic human platelet antigen (HPA) systems have been determined and can be typed using genomic DNA. The introduction of polymerase chain reaction enabled development of several different assays including polymerase chain reaction-sequence-specific primer, melting curve analysis by LightCycler, and 5'-nuclease assays. More recently, multiplex polymerase chain reaction has allowed for the development of high-throughput assays for genotyping large numbers of patients and blood donors for not only platelet gene polymorphisms but also for those of other blood cell genes. Platelet genotyping is a valuable tool in confirming platelet antigen specificities of alloantibodies detected in patient sera to complement the clinical history in the diagnosis of alloimmune platelet disorders such as fetal and neonatal alloimmune thrombocytopenia (FNAIT), posttransfusion purpura, and multiplatelet transfusion refractoriness. In addition, it has made possible prenatal platelet typing of the fetus in suspected cases of FNAIT and large-scale blood donor typing for provision of antigen-negative platelets to transfuse highly alloimmunized patients. Platelet genotyping may also someday prove important as an aid in determining the relative risk of patients for various thrombotic disorders.
Data in the cloud: authentication without leaking (2010)

Third party data distribution frameworks such as the cloud are increasingly being employed in order to store, process, and publish sensitive information such as healthcare and finance information, belonging to individuals and enterprises. Such data objects are often organized as trees, graphs or even forests (e.g., XML). In third party frameworks, not only authentication of data is important but also protection of privacy and assurance of confidentiality are important. Moreover, data authenticity must be assured even when the data object that a user has access to consists of subset(s) of the signed data. 
Existing solutions such as Merkle hash technique and the redactable signature schemes lead to leakages of structural information, which can be used to infer sensitive information, which in turn would lead to privacy and confidentiality breaches. So the question is: can we authenticate subset(s) of signed data objects without leaking, and if so, how efficiently such authentication can be carried out? We have reported a positive result by presenting efficient and provably secure solutions not only for trees, but also graphs and forests. We have presented a scheme that computes only one signature per tree, graph or forest.
Our schemes support encrypted data to be stored at third-party services. Our schemes can also be used to automatically recover from structural errors in tree-structured data, and for leakage-free authentication of paths (e.g., XPaths). Further, as the applications of our schemes, we have also developed a publish/subscribe model for XML – Structure-based routing, and a scheme for authentication of objects.
Synthesis of noncyclic polyether ionophores and their functions. (1987)

Functions of noncyclic polythers have been paid attention in recent years. Their molecular structures were designed with the change of chain structures, terminal groups, kinds and numbers of hetero atoms, etc. They were demonstrated to be available as carriers for ion-transport through liquid membranes, solvent extraction, ion-selective electrodes, and so on. It is in detail described that noncyclic polyethers exhibiting Li+ -selectivity which have been newly prepared can be useful not only for ion-separation but also for ion-analysis. In addition, the relationship between their structures and functions has been discussed based on spectroscopic behaviors, X-ray analysis, and also the inspection of CPK molecular model.
The Preparation of Methoxysilanes by the Interaction of Monosilane and Methanol1 (1959)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Preparation of Methoxysilanes by the Interaction of Monosilane and Methanol1Burt Sternbach and Alan G. MacDiarmidCite this: J. Am. Chem. Soc. 1959, 81, 19, 5109–5110Publication Date (Print):October 1, 1959Publication History Published online1 May 2002Published inissue 1 October 1959https://pubs.acs.org/doi/10.1021/ja01528a023https://doi.org/10.1021/ja01528a023research-articleACS PublicationsRequest reuse permissionsArticle Views225Altmetric-Citations19LEARN 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
MONACO &#x2014; A domain-specific language supporting hierarchical abstraction and verification of reactive control programs (2010)

Domain-specific languages aim to present software in the notations of domain experts and allow a straightforward mapping of application concepts to software solutions. In this paper, we present a domain-specific language for programming reactive control programs. The language differs from other approaches mainly by its hierarchical component approach, in which lower-level components provide elementary operations and upper components rely on the operations of their subordinates to implement higher control tasks. Moreover, the hierarchical component approach is leveraged in a hierarchical verification technique in which component implementations are verified against dynamic contracts of their subcomponents. We present the principles of the verification technique and discuss how it can be applied in a multi-stage development process.
A CPD image sensor with an SOI structure (1988)

A CPD image sensor with an SOI (silicon-on-insulator) structure has been developed. The sensor is composed of read-out transistors fabricated on laser-recrystallized silicon, photodiodes on the seeding region, an MOS shift register, and a CCD shift register. A reproduced image with a 50 (H)*60 (V) pixel image sensor showed reduction of smear noise to a value 1/8000 times that in the bulk transistor as a result of complete isolation of the drains of the read-out transistors by oxide layers.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
The start of the 50th year! (2004)

The Start of the 50 th Year!This issue of the AIChE Journal is the first of its 50 th year, an event worthy of some special recognition.This will be done in a number of ways during the year.First, in this issue you will find a list of the 100 most cited articles in the history of the Journal.These articles have hundreds of citations-and three have more than a thousand-which is evidence of the quality of articles published in the Journal and their impact on chemical engineering.Second, most of the issues this year will contain 50-year reviews of areas within chemical engineering by acknowledged leaders in their fields.The first of these reviews "Mathematics in Chemical Engineering: A 50-Year Introspection" by Doraiswami Ramkrishna and Neal Amundson appears in this issue.This will be followed by reviews of transport phenomena by R. Byron Bird, of biomedical engineering by Robert Langer and Nicholas Peppas, of thermodynamics by John M. Prausnitz and others in the months ahead.Also, there will be two sessions celebrating the golden anniversary of the Journal at the 2004 Annual Meeting of the Institute next November in Austin, TX.There have been many changes in the Journal since its founding under the leadership of Harding Bliss, and changes in both content and process will continue as the profession evolves.During the past year, we introduced a Web-based submission and review process that has reduced the average time between when an author submits a manuscript and it appears in print by more than two months.Our goal in the immediate future is to reduce this time by another two months to an average of about nine months for the print version.An important change with this issue is that John Wiley & Sons, Inc. has assumed post-editorial publishing responsibilities for the AIChE Journal (as well as two other AIChE publications, Environmental Progress and Process Safety Progress).This will have a number of advantages for authors and readers of the Journal, including the Wiley commitment to continued excellence of the Journal, the launching of online editions through Wiley Interscience with reference linking and improved searchability, the creation and distribution of a digital archive of all previous volumes of the Journal, and electronic publication of articles before their appearance in print.This and Wiley's worldwide marketing and distribution network hold the promise of a more rapid dissemination of articles in the AIChE Journal to a larger readership.While this editorial is not the place for a detailed history of the Journal, some retrospection is justified.When the Journal was introduced 1955, its foundation editor Harding Bliss wrote, "We plan to emphasize in the Journal those theoretical developments and research results which are immediately interesting to many and which it is hoped will be of great ultimate value for all."That is still our goal.Evidence of the success of the Journal was apparent from its start as a quarterly publication, to a bimonthly in 1962 and then monthly issues in 1985.Enhancing the electronic delivery of articles has been ongoing in an effort to keep abreast
ChemInform Abstract: Nitrogen‐Containing Remote Functionalized Organolithium Compounds by Reductive Opening of Five‐ and Six‐Membered Heterocycles. (1996)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.