gebhart/patrepeval huggingface dataset:
Chemical kinetic studies on dry sorbents. Final report. [Sodium bicarbonate] (1982)

The scope of this research investigation has included a review of potential additives suitable for dry flue-gas desulfurization (FGD) and a bench scale laboratory study to determine the chemical kinetics for the reaction of five different sorbents with sulfur dioxide. The sorbents chosen included sodium bicarbonate (NaHCO/sub 3/), soda ash (Na/sub 2/CO/sub 3/), trona, lime (CaO) and hydrated lime (Ca(OH)/sub 2/). This study has shown that: (1) The reaction rate increases with temperature for soda ash and calcium oxide. The reaction temperature has an inverse effect on sodium bicarbonate and trona due, primarily, to the simultaneous thermal activation reaction. The calcium hydroxide-SO/sub 2/ reaction increased up to 550/sup 0/F, and then decreased, due to uneven gas flow distribution. (2) The reaction rates for soda ash, calcium oxide and calcium hydroxide were increased by decreasing their particle size. This effect was not confirmed for sodium bicarbonate and trona where reaction temperature was the most important reaction parameter. (3) Reaction with soda ash was found to be limited by the presence of an impervious ash layer which prevented interparticle gaseous diffusion. Calcium oxide and calcium hydroxide were found to be limited by a slow chemical reaction rate. Results on the rate-limiting stepsmore » for sodium bicarbonate and trona were inconclusive because of the simultaneous thermal activation reaction. (4) The effect of thermal activation was to increase the reaction rate for sodium bicarbonate and trona at lower temperatures. This effect was less pronounced at higher temperatures. (5) Results obtained for nitric oxide show limited adsorption for the five sorbents tested as compared to the finding for sulfur dioxide.« less
Efficient binning for bitmap indices on high-cardinality attributes (2004)

Bitmap indexing is a common technique for indexing high-dimensional data in data warehouses and scientific applications. Though efficient for low-cardinality attributes, query processing can be rather costly for high-cardinality attributes due to the large storage requirements for the bitmap indices. Binning is a common technique for reducing storage costs of bitmap indices. This technique partitions the attribute values into a number of ranges, called bins, and uses bitmap vectors to represent bins (attribute ranges) rather than distinct values. Although binning may reduce storage costs, it may increase the access costs of queries that do not fall on exact bin boundaries (edge bins). For this kind of queries the original data values associated with edge bins must be accessed, in order to check them against the query constraints.In this paper we study the problem of finding optimal locations for the bin boundaries in order to minimize these access costs subject to storage constraints. We propose a dynamic programming algorithm for optimal partitioning of attribute values into bins that takes into account query access patterns as well as data distribution statistics. Mathematical analysis and experiments on real life data sets show that the optimal partitioning achieved by this algorithm can lead to a significant improvement in the access costs of bitmap indexing systems for high-cardinality attributes.
Antiviral Agents from Plants and Herbs: A Systematic Review (2003)

Though most of the clinical trials located reported some benefits from use of antiviral herbal medicines, negative trials may not be published at all. There remains a need for larger, stringently designed, randomized clinical trials to provide conclusive evidence of their efficacy.
The halo mass function from the dark ages through the present day (2006)

We use an array of high-resolution N-body simulations to determine the mass function of dark matter haloes at redshifts 10-30. We develop a new method for compensating for the effects of finite simulation volume that allows us to find an approximation to the true 'global' mass function. By simulating a wide range of volumes at different mass resolution, we calculate the abundance of haloes of mass 10 5-12 h -1 M . This enables us to predict accurately the abundance of the haloes that host the sources that reionize the Universe. In particular, we focus on the small mass haloes ( 10 5.5-6 h -1 M ) likely to harbour Population III stars where gas cools by molecular hydrogen emission, early galaxies in which baryons cool by atomic hydrogen emission at a virial temperature of 10 4 K (10 7.5-8 h -1 M ), and massive galaxies that may be observable at redshift 10. When we combine our data with simulations that include high-mass haloes at low redshift, we find that the best fit to the halo mass function depends not only on the linear overdensity, as is commonly assumed in analytic models, but also on the slope of the linear power spectrum at the scale of the halo mass. The Press-Schechter model gives a poor fit to the halo mass function in the simulations at all epochs; the Sheth-Tormen model gives a better match, but still overpredicts the abundance of rare objects at all times by up to 50 per cent. Finally, we consider the consequences of the recently released WMAP 3-yr cosmological parameters. These lead to much less structure at high redshift, reducing the number of z = 10 'mini-haloes' by more than a factor of two and the number of z = 30 galaxy hosts by nearly four orders of magnitude. Code to generate our best-fitting halo mass function may be downloaded from http://icc.dur.ac.uk/Research/PublicDownloads/genmf readme.html.
In-Situ Reservoir Compaction Monitoring in the Groningen Field (1994)

Abstract In-Situ reservoir compaction measurements have been performed in the Groningen field since 1974. The technique is based on regularly monitoring the distance between radio-active markers shot at regular distances across the reservoir. The application of this technique in the Groningen field is unique in the sense that it is normally used to monitor compaction in unconsolidated reservoirs, that compact much more than the Groningen reservoir. In practice, it has been proven difficult to obtain the required accuracy, 1 mm per 10 m. Until recently, the vertical rock compressibility could only be measured in three of the eight wells. The reservoir rock is so competent, that the target resolution is very close to the instrument resolution. Over the years, much effort has been put into improving the accuracy and reliability of the measurements, improvement on tools as well as on interpretation techniques. In 1993/1994, part of the surveys has been re-interpreted, using a new marker position algorithm, and a selection mechanism has been developed to identify statistically significantly deviating data. As a result, in all but one well could the vertical compressibility be obtained. The in-situ measured compressibilities match with the compressibility as inferred from the surface subsidence over the field.
Inhibition of salivary secretion by lipopolysaccharide: possible role of prostaglandins (2001)

Inducible (calcium-independent) nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) are important in the regulation of the function of different organs during infection. A single dose of lipopolysaccharide (LPS; 5 mg/kg ip) within 6 h increased NOS activity (20%) and prostaglandin E (PGE) content (100%) in submandibular glands (SMG) and blocked stimulated salivary secretion in adult male rats. The administration of an iNOS synthesis inhibitor, aminoguanidine (AG), with LPS decreased NOS activity and PGE content. Furthermore, the administration of meloxicam (MLX), an inhibitor of COX-2, blocked the increase in PGE and the production of NO. The incubation of slices of SMG in the presence of 3-morpholinosydnonimine, a donor of NO, increased the release of PGE highly significantly. The incubation of SMG in the presence of a PGE(1) analog (alprostadil) increased the production of NO. These results indicate that LPS activates NOS, leading to NO release, which activates COX, generating PGEs that act back to further activate NOS, causing further generation of PGEs by activation of COX. Because the alprostadil administration inhibited stimulated salivation, LPS-induced inhibition of salivation appears to be caused by increased PGE production. Diminished salivary secretion produces poor oral health; thus the use of COX-2 inhibitors to counteract the effects of inhibited salivation should be considered.
Planar array diagnosis through compressive sensing: A preliminary assessment (2014)

An approach based on the Bayesian Compressive Sensing (BCS) is presented in this work for the diagnosis of failed elements in planar arrays. After formulating the relation between the measured “difference” far-field pattern samples and the failed elements as a linear relationship with sparse unknowns, the BCS paradigm is adopted in order to get an estimate of the location and to retrieve the “entity” of the failures while enforcing the sparsity of the solution. The approach is numerically validated through preliminary examples aimed t showing the effectiveness and reliability of the proposed methodology also in the presence of noisy data.
Changes in Laminin Expression Pattern during Early Differentiation of Human Embryonic Stem Cells (2015)

Laminin isoforms laminin-511 and -521 are expressed by human embryonic stem cells (hESC) and can be used as a growth matrix to culture these cells under pluripotent conditions. However, the expression of these laminins during the induction of hESC differentiation has not been studied in detail. Furthermore, the data regarding the expression pattern of laminin chains in differentiating hESC is scarce. In the current study we aimed to fill this gap and investigated the potential changes in laminin expression during early hESC differentiation induced by retinoic acid (RA). We found that laminin-511 but not -521 accumulates in the committed cells during early steps of hESC differentiation. We also performed a comprehensive analysis of the laminin chain repertoire and found that pluripotent hESC express a more diverse range of laminin chains than shown previously. In particular, we provide the evidence that in addition to α1, α5, β1, β2 and γ1 chains, hESC express α2, α3, β3, γ2 and γ3 chain proteins and mRNA. Additionally, we found that a variant of laminin α3 chain-145 kDa-accumulated in RA-treated hESC showing that these cells produce prevalently specifically modified version of α3 chain in early phase of differentiation.
PERAN MANUSIA DALAM PELESTARIAN LINGKUNGAN HIDUP (Suatu Tinjauan Teologis) (2016)

Manusia bukanlah satu-satunya makhluk Allah Swt. Manusia berada ditengah-tengah seribu satu jenis makhluk Allah lainnya. Seluruh makhluk diciptakan saling berinteraksi, saling menopang, saling membutuhkan dan saling mendukung dalam satu kesatuan hidup global yang direncanakan secara apik oleh Sang Pencipta, Subhanallah . Ternyata, manusia diciptakan dengan suatu spesifikasi khusus yang memberinya nilai lebih di antara sejumlah makhluk Allah lainnya, terutama dalam hal merekayasa lingkungannya untuk kehidupan yang lebih baik. Sayang sekali, spesifikasi khusus tersebut bermata dua. Ia bisa membuat hidup dan lingkungannya menjadi lebih baik, scbaliknya justru bisa membuat hidup dan lingkungannya menjadi binasa. Kerakusan, lupa akan tanggung jawab moral yang diakibatkan oleh absennya zikir kepada Sang Khalik menciptakan malapetaka. Sebaliknya, dengan fikiran yang jernih, moralitas yang tinggi dan kesadaran ketuhanan, akan menjadikan manusia menjadi makhluk terbaik dtengah-tengah makhluk Allah lainnya.
Analysis of affective expression in speech (2021)

This dissertation presents analysis of expressions in speech. It describes a novel framework for dynamic recognition of acted and naturally evoked expressions and its application to expression mapping and to multi-modal analysis of human-computer interactions. The focus of this research is on analysis of a wide range of emotions and mental states from non-verbal expressions in speech. In particular, on inference of complex mental states, beyond the set of basic emotions, including naturally evoked subtle expressions and mixtures of expressions. This dissertation describes a bottom-up computational model for processing of speech signals. It combines the application of signal processing, machine learning and voting methods with novel approaches to the design, implementation and validation. It is based on a comprehensive framework that includes all the development stages of a system. The model represents paralinguistic speech events using temporal abstractions borrowed from various disciplines such as musicology, engineering and linguistics. The model consists of a flexible and expandable architecture. The validation of the model extends its scope to different expressions, languages, backgrounds, contexts and applications. The work adapts an approach that an utterance is not an isolated entity but rather a part of an interaction and should be analysed in this context. The analysis in context includes relations to events and other behavioural cues. Expressions of mental states are related not only in time but also by their meaning and content. This work demonstrates the relations between the lexical definitions of mental states, taxonomies and theoretical conceptualization of mental states and their vocal correlates. It examines taxonomies and theoretical conceptualisation of mental states in relation to their vocal characteristics. The results show that a very wide range of mental state concepts can be mapped, or described, using a high-level abstraction in the form of a small sub-set of concepts which are characterised by their vocal correlates. This research is an important step towards comprehensive solutions that incorporate social intelligence cues for a wide variety of applications and for multi-disciplinary research.
A Low-cost Vehicle Detection and Classification System based on Unmodulated Continuous-wave Radar (2007)

Vehicle detection and classification system is an important part of the intelligent transportation systems (ITS). Its function is to measure traffic parameters such as flow-rate, speed, and vehicle types, which are valuable information for applications of road surveillance, traffic signal control, road planning, and so on. This paper presents a novel low-cost vehicle detection and classification system which is based on a K-band unmodulated CW radar. This system utilizes time-frequency analysis, multi-threshold detection, and Hough transform as the major signal processing methods to extract speed and shape information of vehicles from Doppler signature they generate. It can perform vehicle detection, speed measurement, and vehicle classification simultaneously. Experimental results show that the proposed system and algorithms can provide promising performance and accuracy.
Measurement of polarization-mode dispersion in single-mode fibers with random mode coupling (1989)

A simple frequency-domain technique for measuring polarization-mode dispersion in single-mode fibers with random mode coupling is used to give what is to my knowledge the first direct experimental demonstration of the transition of the dispersion from a linear length dependence to a square-root-of-length dependence. Sensitivity to external perturbations is demonstrated by an order-of-magnitude increase in dispersion when the fiber is removed from a conventional spool and placed on a large-diameter drum. An expression for the length-dependent probability density function that describes the dispersion for highly coherent sources is also presented and confirmed experimentally.
Comparative optical measurements of airspeed and aerosols on a DC-8 aircraft (2002)

NASA Dryden supported a cooperative flight test program on the NASA DC-8 aircraft in November 1993. This program evaluated optical airspeed and aerosol measurement techniques. Three brassboard optical systems were tested. Two were laser Doppler systems designed to measure freestream-referenced airspeed. The third system was designed to characterize the natural aerosol statistics and airspeed. These systems relied on optical backscatter from natural aerosols for operation. The DC-8 aircraft carried instrumentation that provided real-time flight situation information and reference data on the aerosol environment. This test is believed to be the first to include multiple optical airspeed systems on the same carrier aircraft, so performance could be directly compared. During 23 hr of flight, a broad range of atmospheric conditions was encountered, including aerosol-rich layers, visible clouds, and unusually clean (aerosol-poor) regions. Substantial amounts of data were obtained. Important insights regarding the use of laser-based systems of this type in an aircraft environment were gained. This paper describes the sensors used and flight operations conducted to support the experiments. The paper also briefly describes the general results of the experiments.
Review of the Pitot Tube (1956)

Abstract This paper is an attempt to bring together the important information regarding Pitot tubes and their use; to summarize the available data on the application of various types of impact and velocity probes for the guidance of engineers and research workers; and to aid them in the design of flow instruments for specific applications.
Blind adaptive decision feedback equalization: a class of channels resulting in ill-convergence from a zero initialization (1998)

This paper addresses the ill-convergence of blind adaptive decision feedback equalizers using the decision-directed algorithm under a zero initialization. In particular, the paper identifies analytically a class of channels for which the adaptive equalizer parameters converge to an undesired minimum where incorrect decision estimates can be made under zero noise. This misbehaviour occurs despite the existence of a DFE parameter setting that perfectly equalizes the channel. © 1998 John Wiley & Sons, Ltd.
1,5-Diaryl-2,3-pyrrolidinediones. VIII. Synthesis and Structure Proof (1957)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT1,5-Diaryl-2,3-pyrrolidinediones. VIII. Synthesis and Structure ProofWALTER L. MEYERWALTER L. MEYERMore by WALTER L. MEYER and WYMAN R. VAUGHANWYMAN R. VAUGHANMore by WYMAN R. VAUGHANCite this: J. Org. Chem. 1957, 22, 12, 1554–1560Publication Date (Print):December 1, 1957Publication History Published online1 May 2002Published inissue 1 December 1957https://pubs.acs.org/doi/10.1021/jo01363a005https://doi.org/10.1021/jo01363a005research-articleACS PublicationsRequest reuse permissionsArticle Views238Altmetric-Citations12LEARN 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
Analysis of the catalytic activity induction and deactivation of PtIn/Mg(Al)O catalysts for propane dehydrogenation reaction (2015)

The catalytic activity induction and deactivation of PtIn/Mg(Al)O catalysts for propane dehydrogenation reaction are experimentally verified.
Smart fabric sensors and e-textile technologies: a review (2014)

This paper provides a review of recent developments in the rapidly changing and advancing field of smart fabric sensor and electronic textile technologies. It summarizes the basic principles and approaches employed when building fabric sensors as well as the most commonly used materials and techniques used in electronic textiles. This paper shows that sensing functionality can be created by intrinsic and extrinsic modifications to textile substrates depending on the level of integration into the fabric platform. The current work demonstrates that fabric sensors can be tailored to measure force, pressure, chemicals, humidity and temperature variations. Materials, connectors, fabric circuits, interconnects, encapsulation and fabrication methods associated with fabric technologies prove to be customizable and versatile but less robust than their conventional electronics counterparts. The findings of this survey suggest that a complete smart fabric system is possible through the integration of the different types of textile based functional elements. This work intends to be a starting point for standardization of smart fabric sensing techniques and e-textile fabrication methods.
The Management Aspects of Frame Relay (1992)

Abstract If the marketing hype is to be believed, frame relay offers benefits that are too compelling to ignore. But when the layers of hype are peeled away, what remains are several unresolved issues in such critical areas as standards compliance, congestion control and network management.
Am-fm image models (1996)

A new theory of multidimensional AM-FM signal modeling is presented in this dissertation. AM-FM image functions generalize the 2D Fourier transform kernel by admitting arbitrarily varying amplitude and phase modulations. Thus, they are inherently capable of capturing essential nonstationary, yet locally coherent image structures. Often, such nonstationarities contribute significantly to visual perception and interpretation. Recently, AM-FM signal modeling has been successfully applied to a number of problems characterized by such nonstationarities. Examples include speech recognition and analysis, image texture modeling, analysis, and segmentation, 3D shape from texture, and phase-based computational stereopsis.
The first half of the dissertation focuses on the fundamental motivation and principles of AM-FM modeling. Foundations are developed for analyzing modulations in arbitrarily dimensioned continuous and discrete signals using nonlinear demodulation operators related to the Teager-Kaiser operator. In the second half of the dissertation, practical approaches are presented for extracting AM-FM sub-image information from digital images and for computing multi-component AM-FM image representations. Biologically motivated multiband Gabor filter banks are used for isolating AM-FM image multi-components on a spatio-spectrally localized basis, and optimal filters are designed for tracking multi-components across the filterbank channel responses using a statistical state-space component model. Techniques for recovering the essential structure of an image from its computed AM-FM representation are also developed.
Two main computational paradigms are presented in detail. The first, called dominant component analysis, delivers estimates of the emergent frequencies and dominant amplitude modulations of an image. These estimates are useful in a variety of image processing and machine vision tasks, including shape from texture and texture-based stereopsis. Texture segmentation using the estimated dominant component modulating functions is also demonstrated. In the second main paradigm, full multi-component AM-FM image representations are computed. Exciting future applications of such representations include AM-FM-based image and video coding for multimedia communications and CD-ROM mass storage systems.