gebhart/patrepeval huggingface dataset:
Bridgeless Flyback PFC Rectifier Using Single Magnetic Core and Dual Output Windings (2011)

In this paper, a bridgeless flyback power factor correction (PFC) rectifier which uses single magnetic core is proposed. The proposed PFC rectifiers utilize bidirectional switch to handle both positive and negative input voltage without bridge diodes. A transformer with dual output windings enables the rectifier dispense with any additional magnetic component. The operation of the proposed flyback PFC rectifier is analyzed, and its higher efficiency than its conventional counterpart is verified by experiment.
Comparison of the negative reactant ions formed in the plasma chromatograph by nitrogen, air, and sulfur hexafluoride as the drift gas with air as the carrier gas (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the negative reactant ions formed in the plasma chromatograph by nitrogen, air, and sulfur hexafluoride as the drift gas with air as the carrier gasTimothy W. CarrCite this: Anal. Chem. 1979, 51, 6, 705–711Publication Date (Print):May 1, 1979Publication History Published online1 May 2002Published inissue 1 May 1979https://pubs.acs.org/doi/10.1021/ac50042a030https://doi.org/10.1021/ac50042a030research-articleACS PublicationsRequest reuse permissionsArticle Views169Altmetric-Citations24LEARN 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
Machine Learning for Financial Risk Management: A Survey (2020)

Financial risk management avoids losses and maximizes profits, and hence is vital to most businesses. As the task relies heavily on information-driven decision making, machine learning is a promising source for new methods and technologies. In recent years, we have seen increasing adoption of machine learning methods for various risk management tasks. Machine-learning researchers, however, often struggle to navigate the vast and complex domain knowledge and the fast-evolving literature. This paper fills this gap, by providing a systematic survey of the rapidly growing literature of machine learning research for financial risk management. The contributions of the paper are four-folds: First, we present a taxonomy of financial-risk-management tasks and connect them with relevant machine learning methods. Secondly, we highlight significant publications in the past decade. Thirdly, we identify major challenges being faced by researchers in this area. And finally, we point out emerging trends and promising research directions.
Structure and Activity of (2,8)-Dicarba-(3,12)-cystino α-ImI, an α-Conotoxin Containing a Nonreducible Cystine Analogue (2009)

The alpha-conotoxins are potent and selective antagonists of nicotinic acetylcholine receptors (nAChR). Exploitation of these and other peptides in research and clinical settings has been hampered by the lability of the disulfide bridges that are essential for toxin structure and activity. One solution to this problem is replacement of cystine bridges with nonreducible dicarba linkages. We explore this approach by determining the solution structure and functional characteristics of a dicarba analogue of the alpha-conotoxin alpha-ImI, (2,8)-dicarba-(3,12)-cystino alpha-ImI. The structure of the dicarba analogue was similar to that of native alpha-ImI, with differences attributable to the different covalent geometry of the disulfide and dicarba bridges. Dicarba-alpha-ImI maintained inhibitory activity of nAChR comparable to that of native alpha-ImI in two in vitro assays. These findings confirm the potential of the dicarba linkage to improve stability while maintaining alpha-conotoxin function.
Preparation and Electrochemical Characterization of LiCoO[sub 2] Particles Prepared by Supercritical Water Synthesis (1999)

single‐crystal particles were obtained by supercritical water synthesis (SCWS) under optimized preparation conditions. The reaction time was less than . The particle size was , which was much smaller than that of prepared by a solid‐state reaction, and the crystal shape was rhombohedral. An electron diffraction image showed a highly crystalline phase. Intercalation and deintercalation of lithium into and from particles were carried out with good reversibility. ©2000 The Electrochemical Society
A hybrid binary classifier: Using modified Logistic Regression for non-support vector elimination (2015)

This paper is a report on a new Hybrid Binary Classifier that aims to eliminate non-support vectors through a pre-processing stage and hence aims to reduce the storage and time requirements for the training phase of an SVM classifier without forgoing accuracy. The paper investigates the possibility of dividing the N-dimensional space into 3 sub-regions - one each for both labels and the third which holds the region of contention between the 2 labels. The new classifier is built using a modified form of Logistic Regression and SVM. Such a classifier is tested on a number of datasets and the findings are reported.
A Dispersion and Characteristic Analysis for the One-dimensional Two-fluid Mode with Momentum Flux Parameters (2001)

The dynamic character of a system of the governing differential equations for the one- dimensional two-fluid model, where the momentum flux parameters are employed to consider the velocity and void fraction distribution in a flow channel, is investigated. In response to a perturbation in the form of a＇traveling wave, a linear stability analysis is peformed for the governing differential equations. The expression for the growth factor as a function of wave number and various flow parameters is analytically derived. It provides the necessary and sufficient conditions for the stability of the one-dimensional two-fluid model in terms of momentum flux parameters. It is demonstrated that the one-dimensional two-fluid model employing the physical momentum flux parameters for the whole range of dispersed flow regime, which are determined from the simplified velocity and void fraction profiles constructed from the available experimental data and correlation, is stable to the linear perturbations in all wave-lengths. As the basic form of the governing differential equations for the conventional one-dimensional two-fluid model is mathematically ill posed, it is suggested that the velocity and void distributions should be properly accounted for in the one-dimensional two-fluid model by use of momentum flux parameters.s.
Pop-up SLAM: Semantic monocular plane SLAM for low-texture environments (2016)

Existing simultaneous localization and mapping (SLAM) algorithms are not robust in challenging low-texture environments because there are only few salient features. The resulting sparse or semi-dense map also conveys little information for motion planning. Though some work utilize plane or scene layout for dense map regularization, they require decent state estimation from other sources. In this paper, we propose real-time monocular plane SLAM to demonstrate that scene understanding could improve both state estimation and dense mapping especially in low-texture environments. The plane measurements come from a pop-up 3D plane model applied to each single image. We also combine planes with point based SLAM to improve robustness. On a public TUM dataset, our algorithm generates a dense semantic 3D model with pixel depth error of 6.2 cm while existing SLAM algorithms fail. On a 60 m long dataset with loops, our method creates a much better 3D model with state estimation error of 0.67%.
A standing posture control based on ground reaction force (2002)

Several forces are always exerted on locomotion systems, such as inertial forces, gravitational forces and ground reaction forces. Among these, we focus on the ground reaction forces in order to consider the balance control of a simple two-link legged robot model in the sagittal plane, which contains one actuator at the ankle and two force sensors on the sole. To maintain the balance, it is necessary that the ground reaction forces are kept positive at both ends of the foot, i.e. the heel and the toe. To achieve this, we design two control laws for each ground reaction force. By alternatively switching them, the standing posture can be maintained. Examining the behavior in the phase plane, the stability of the control laws are considered. Furthermore, we also study posture changes caused by stationary external forces in the horizontal direction. Introducing a torque input that changes on a large time scale, we realize a postural adjustment whereby the body is adaptively inclined to the opposite direction of the external force. By computer simulations, we confirm the convergence of such a posture adjustment.
A Convenient Synthesis of 2-Substituted 3-Hydroxy- and 3-Amino-Thiophens from Derivatives of 2-Chloroacrylic Acid (1979)

Abstract A valuable synthesis of methyl 3-amino-1 and 3-hydroxy-2 2-thiophen carboxylates, due to Fiesselmann, involves the base-induced condensation of methyl thioglycollate with 2,3-dihalogeno-propionitrile and 2,3-dihalogenopropionate esters, respectively. It seemed to us that readily accessible 2-halogenoacrylic acid derivatives might be useful substitutes for the halogenated compounds previously employed in these reactions. Accordingly we have used compounds (1a) and (1b) in a modification of the Fiesselmann process, and have obtained good yields of the thiophen derivatives (2a) and (2b):-
A dual-polarity SCR for RF IC ESD protection (2008)

Low-parasitic electrostatic discharge (ESD) protection is highly desirable for RF ICs. Silicon controlled rectifier (SCR), which is usually used as an on-chip electrostatic discharge (ESD) protection device in ICs, has the advantages of high current shunting ability and low parasitic effect. In this paper, a new ESD protection device based on the dual-polarity SCR (DSCR) is proposed in 0.18-mum CMOS mixed-signal process. The structure, crucial parameters and performance optimization of this new DSCR device have been discussed, too. The new DSCR has a high ESD human body model (HBM) protection level, low parasitic effects and easily-adjustable crucial parameter.
A Microburette for Producing Small Liquid Drops of Known Size (1947)

An apparatus is described by means of which small individual drops of accurately known uniform size may be produced. The drops are formed at the tip of a hypodermic needle round which is flowing a concentric stream of air. By varying the speed of the air, the size of the drops delivered from the microburette can be varied over a wide range.
A review of opinion mining and sentiment classification framework in social networks (2009)

The Web has dramatically changed the way we express opinions on certain products that we have purchased and used, or for services that we have received in the various industries. Opinions and reviews can be easily posted on the Web, such as in merchant sites, review portals, blogs, Internet forums, and much more. These data are commonly referred to as user-generated content or user-generated media. Both the product manufacturers, as well as potential customers are very interested in this online dasiaword-of-mouthpsila, as it provides product manufacturers information on their customers likes and dislikes, as well as the positive and negative comments on their products whenever available, giving them better knowledge of their products limitations and advantages over competitors; and also providing potential customers with useful and dasiafirst-handpsila information on the products and/or services to aid in their purchase decision making process. This paper discusses the existing works on opinion mining and sentiment classification of customer feedback and reviews online, and evaluates the different techniques used for the process. It focuses on the areas covered by the evaluated papers, points out the areas that are well covered by many researchers and areas that are neglected in opinion mining and sentiment classification which are open for future research opportunity.
Transforming growth factor   induced FoxP3+ regulatory T cells suppress Th1 mediated experimental colitis (2005)

Our data suggest that regulatory Ti-Treg cells expand by TGF-beta and exogenous IL-2 derived from effector T cells at the site of inflammation. In addition to Tr1 and thymic CD4+CD25+ T cells, peripheral Ti-Treg cells emerge as a class of regulatory T cells with therapeutic potential in T cell mediated chronic intestinal inflammation.
Pharmacokinetics of drospirenone and ethinylestradiol in Caucasian and Japanese women (2012)

Ethnic origin had no clinically relevant influence on the pharmacokinetics of DRSP and EE.
High risk of breast carcinoma after irradiation of young women with Hodgkin's disease (1997)

Women younger than 30 years, particularly those younger than 20 years, who have received mantle irradiation for Hodgkin's disease require meticulous follow-up for breast carcinoma. The high incidence of breast carcinoma in this patient population should be considered when making treatment decisions in young women with early stage Hodgkin's disease.
Invited - Terahertz quantum cascade lasers (2003)

Quantum cascade lasen operating at far- infrared (terahertz) frequencies have now been demon- strated. We review the fabrication, operation, and perform- ance of these lasers, and indicate recent results in which de- vices have been developed tu operate continuous wave, at temperatures greater than 11 K, emit at frequencies down tu 3.5 THz, and produce tens of milli-Watts of power. These results are an encouraging step towards a widely applicable solid-state terahertz source, and the development of terahertz photonics.
Comparison of the influence of saturated nitrogen and sulfur donor atoms on the properties of copper(II/I)-macrocyclic polyamino polythiaether ligand complexes: redox potentials and protonation and stability constants of CuIL species and new structural data (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the influence of saturated nitrogen and sulfur donor atoms on the properties of copper(II/I)-macrocyclic polyamino polythiaether ligand complexes: redox potentials and protonation and stability constants of CuIL species and new structural dataM. Margarida Bernardo, Mary Jane Heeg, Ronald R. Schroeder, L. A. Ochrymowycz, and D. B. RorabacherCite this: Inorg. Chem. 1992, 31, 2, 191–198Publication Date (Print):January 1, 1992Publication History Published online1 May 2002Published inissue 1 January 1992https://pubs.acs.org/doi/10.1021/ic00028a013https://doi.org/10.1021/ic00028a013research-articleACS PublicationsRequest reuse permissionsArticle Views595Altmetric-Citations83LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Use of Toenail Fluoride Levels as an Indicator for the Risk of Hip and Forearm Fractures in Women (1998)

The relation between fluoride intake and risk of osteoporotic fractures remains unclear. The lack of individual measures of long-term fluoride intake has limited epidemiologic studies. We used toenail fluoride in this study as a measure of long-term intake to evaluate the relation between fluoride intake and subsequent risk of hip and distal forearm fractures. Between 1982 and 1984, we collected toenail clippings from 62,641 women in the Nurses' Health Study who were free from cancer, heart disease, stroke, and previous hip or forearm fracture. We identified fracture cases (53 proximal femur and 188 distal forearm) through subsequent biennial mailed questionnaires and matched controls to cases on year of birth. The odds ratio of hip fracture among women in the highest quartile of toenail fluoride [ > 5.50 parts per million (ppm)], compared with those in the lowest quartile (> 2.00 ppm), was 0.8 (95% confidence interval = 0.2-4.0), with adjustment for menopausal status, postmenopausal hormone use, caffeine intake, and alcohol consumption. The corresponding adjusted odds ratio for forearm fracture was 1.6 (95% confidence interval = 0.8-3.1). Further adjustment for body mass index, smoking status, and calcium and vitamin D intake did not alter these results.
Effects of Inhalation of Corticosteroids Immediately after Experimental Chlorine Gas Lung Injury (2000)

Immediate treatment with nebulized BDP improved pulmonary and cardiovascular function after experimental chlorine gas injury.
Discovery of 4,5,6,7-Tetrahydrobenzo[1,2-<i>d</i>]thiazoles as Novel DNA Gyrase Inhibitors Targeting the ATP-Binding Site (2015)

Bacterial DNA gyrase and topoisomerase IV are essential enzymes that control the topological state of DNA during replication and validated antibacterial drug targets. Starting from a library of marine alkaloid oroidin analogues, we identified low micromolar inhibitors of Escherichia coli DNA gyrase based on the 5,6,7,8-tetrahydroquinazoline and 4,5,6,7-tetrahydrobenzo[1,2-d]thiazole scaffolds. Structure-based optimization of the initial hits resulted in low nanomolar E. coli DNA gyrase inhibitors, some of which exhibited micromolar inhibition of E. coli topoisomerase IV and of Staphylococcus aureus homologues. Some of the compounds possessed modest antibacterial activity against Gram positive bacterial strains, while their evaluation against wild-type, impA and ΔtolC E. coli strains suggests that they are efflux pump substrates and/or do not possess the physicochemical properties necessary for cell wall penetration. Our study provides a rationale for optimization of this class of compounds toward balanced dual DNA gyrase and topoisomerase IV inhibitors with antibacterial activity.
Fabrication of Nd-Fe-B exchange-spring magnets (2009)

In this report we present our recent results on fabrication of Nd-Fe-B exchange-spring magnets using melt-spinning method. Additive elements were used to improve useful parameters of this kind of hard magnetic materials. Hot pressing technique was applied to increase mass density of the magnets. The compositions and technology routes for fabricating the Nd-Fe-B exchange-spring magnets with maximum energy product (BH)max above 10 MGOe were shown.
Blood lactate levels in 31 female dogs with pyometra (2009)

Canine pyometra is a life-threatening disease common in countries where spaying of dogs is not routinely performed. The disease is associated with endotoxemia, sepsis, systemic inflammatory response syndrome (SIRS) and a 3–4% mortality rate. Blood lactate analysis is clinically valuable in predicting prognosis and survival, evaluating tissue perfusion and treatment response in human and veterinary critical care settings. The aims of the present study were to investigate 1) the blood lactate levels of female dogs with pyometra by a hand-held analyser and 2) if these levels are related with the clinical status or other biochemical or hematological disorders. In total 31 female dogs with pyometra admitted for surgical ovariohysterectomy and 16 healthy female control dogs were included in the present study. A complete physical examination including SIRS-status determination was performed. Blood samples for lactate concentrations, hematological and biochemical parameters, acid-base and blood gas analysis and other laboratory parameters were collected and subsequently analysed. The diagnosis pyometra was verified with histopathological examination of the uterus and ovaries. Increased hospitalisation length and presence of SIRS were used as indicators of outcome. In the pyometra group the median blood lactate level was 1,6 mmol l-1 (range <0.8–2.7 mmol l-1). In the control group the median lactate level was 1,2 mmol l-1 (range <0.8–2.1 mmol l-1). Of the 31 bitches 19 (61%) fulfilled 2 or more criteria for SIRS at inclusion, 10 bitches (32%) fulfilled 3 of the SIRS criteria whereas none accomplished more than 3 criteria. Lactate levels did not differ significantly between the pyometra and control group, or between the SIRS positive and SIRS negative dogs with pyometra. Increased lactate concentration (>2.5 mmol l-1) was demonstrated in one female dog with pyometra (3%), and was not associated with longer hospitalisation or presence of SIRS. Lactate measurement was not indicative of peritonitis. None of the bitches died during or within two months of the hospital stay. The measurements of temperature, heart rate, respiratory rate, percentage bandforms of neutrophilic granulocytes, α2-globulins, creatinin, pvCO2, TCO2 and base excess showed significant differences between the SIRS positive and the SIRS negative pyometra cases. Increased blood lactate concentrations were demonstrated in 3% (1/31), and SIRS was present in 61% (19/31) of the female dogs with pyometra. Preoperative lactate levels were not related with presence of SIRS or prolonged hospitalisation. Lactate measurement was not indicative of peritonitis. The value of a single and repeated lactate analysis in more severely affected cases remains to be determined.
Characterizing dye bias in microarray experiments (2005)

We analyzed two large (each >27 arrays) tissue culture experiments with extensive dye swap arrays to better characterize dye bias. Indirect, amino-allyl labeling was used in both experiments. We found that post-normalization dye bias that is consistent across samples does appear to exist for many genes, and that controlling and correcting for this type of dye bias in design and analysis is advisable. The extent of this type of dye bias remained unchanged under a wide range of normalization methods (median-centering, various loess normalizations) and statistical analysis techniques (parametric, rank based, permutation based, etc.). We also found dye bias related to the individual samples for a much smaller subset of genes. But these sample-specific dye biases appeared to have minimal impact on estimated gene-expression differences between the cell lines.