gebhart/patrepeval huggingface dataset:
Reconstruction of Surfaces of Revolution from Single Uncalibrated Views (2002)

This paper addresses the problem of recovering the 3D shape of a surface of revolution from a single uncalibrated perspective view.The algorithm introduced here makes use of the invariant properties of a surface of revolution and its silhouette to locate the image of the revolution axis, and to calibrate the focal length of the camera.The image is then normalized and rectified such that the resulting silhouette exhibits bilateral symmetry.Such a rectification leads to a simpler differential analysis of the silhouette, and yields a simple equation for depth recovery.Ambiguities in the reconstruction are analyzed and experimental results on real images are presented, which demonstrate the quality of the reconstruction.
MS Read: Context Sensitive Document Analysis in the WWW Environment (2001)

Highly distributed environments like WWW pose challenges to the design and implementation of Information Management (IM) facilities. Authoring, data collection, indexing, searching, and document delivery on the Web appear completely disconnected. In particular, at the time a document is delivered from the hosting server as a result of search the search context is lost. Furthermore, user’s queries typically provide an incomplete description of the information need. The focus of the search can also change considerably with the user’s exposure to the data. A prototype application called MS Read is presented which creates an evolving model of the user’s need during searching and browsing. It uses that model to analyze accessed documents. The model is based on the natural language processing of search queries and topic descriptions explicitly provided by the user while browsing though documents. It is semantically enhanced using linguistic and custom knowledge resources.
Benchmark problem for beam pointing control of phased array radar against maneuvering targets (2005)

Presents a benchmark problem for tracking maneuvering targets. The benchmark problem involves beam pointing control of a phased array (agile beam) radar against highly maneuvering targets. A testbed simulation program that includes the effects of target amplitude fluctuations, beamshape, missed detections, finite resolution, target maneuvers, and track loss is described. Limits on the position and maneuverability of the targets are given along with descriptions of six target trajectories. The "best" tracking algorithm is the one that requires the minimum number of radar dwells while satisfying a constraint of 4% on the maximum number of lost tracks.
Closed loop adaptive antenna for satellite mobile communications (2002)

An adaptive antenna has been designed and developed for land mobile communications. The purpose of the close loop antenna reported here has been to obtain a system that allows experiments to evaluate a possible solution to the mobile antenna segment of a mobile-satellite communications system. The work involved in the antenna design, the calibration, tracking algorithms and field test are reported.
Intracoronary Fibrinolytic Therapy in Acute Myocardial Infarction (1983)

We performed a randomized trial comparing intracoronary administration of streptokinase versus dextrose placebo within six hours after the onset of symptoms of acute myocardial infarction in 40 patients. The base-line clinical, hemodynamic, and angiographic findings were similar in the control and streptokinase-treated groups. Reestablishment of flow occurred in 12 of 20 patients treated with streptokinase and in 2 of 20 given placebo (P less than 0.05). Left ventricular function, angiographic ejection fraction, and regional wall motion, measured before and immediately after intervention, and serial radionuclide ejection fractions, measured at treatment, at 12 days, and at 5 months, were compared according to type of treatment (streptokinase vs. placebo) and outcome of therapy (reperfusion vs. no reperfusion). No statistically significant differences between groups were found. Thus, although streptokinase was more effective than placebo in achieving reperfusion, we detected no improvement of left ventricular function as a result of reestablished coronary flow.
In vitro generation of antigen-specific hemolytic plaque-forming cells from human peripheral blood mononuclear cells. (1981)

We have described a culture and assay system for the sensitization of human peripheral blood mononuclear cells with a T cell-dependent antigen, sheep erythrocytes, in the absence of nonspecific stimulatory agents and with the subsequent generation of macroscopic hemolytic plaques. We have shown that the antibody produced by the plaque-forming cells generated in this culture system is specific for the sensitizing antigen, and that the plaques created are not false plaques because their formation is inhibited by cycloheximide. The success of this system can be attributed to several critical factors including large numbers of peripheral blood mononuclear cells (5 x 10(6) culture), a prolonged period of incubation (10-11 d), continuous rocking during the entire period of incubation, culturing in large (35-mm) flat-bottomed culture dishes in the presence of human plasma, and the appropriate antigen concentration (5 x 10(6) sheep erythrocytes/culture). Furthermore, the generation of macroscopic hemolytic plaques requires plaquing sensitized peripheral blood mononuclear cells in target cell monolayers fixed in an agarose matrix with an incubation period of 2-3 h. We have further shown that the antigen-specific response measured by this system is dependent on adherent cells and T lymphocytes. At least one population of the helper T cells is sensitive to 2,000 rad irradiation. This system is simple, sensitive, and should serve as an effective tool for the analysis of cellular interactions involved in the generation of human antigen-specific plaque-forming cells, the genetic control the human immune response, and the pathophysiology of altered immunoregulation in disease.
The Annular Momentum Control Device (AMCD) (1975)

An annular momentum control device consisting principally of a spinning rim, a set of noncontacting magnetic bearings for supporting the rim, a noncontacting electric motor for driving the rim, and, for some applications, one or more gimbals is described. The device is intended for applications where requirements for control torque and momentum storage exist. Hardware requirements and potential unit configurations are discussed. Theoretical considerations for the passive use of the device are discussed. Potential applications of the device in other than passive configurations for the attitude control, stabilization, and maneuvering of spacecraft are reported.
Doubly Fed Induction Generator System Resonance Active Damping Through Stator Virtual Impedance (2016)

The penetration of wind power has been increasing in the past few decades all over the world. Under certain nonideal situations where the wind power generation system is connected to the weak grid, the doubly fed induction generator (DFIG)-based wind power generation system may suffer high-frequency resonance (HFR) due to the impedance interaction between the DFIG system and the weak grid network whose impedance is comparatively large. Thus, it is important to implement an active damping for the HFR in order to ensure a safe and reliable operation of both the DFIG system and the grid-connected converters/loads. This paper analyzes and explains first the HFR phenomenon between the DFIG system and a parallel compensated weak network (series RL + shunt C). Then, on the basis of the DFIG system impedance modeling, an active damping control strategy is introduced by inserting a virtual impedance (positive capacitor or negative inductor) into the stator branch through stator current feedforward control. The effectiveness of the DFIG system active damping control is verified by a 7.5 kW experimental downscaled DFIG system, and simulation results of a commercial 2 MW DFIG system is provided as well.
Investigation of a new laser active medium in the form of gadolinium scandium gallium garnet crystals activated with chromium and neodymium (1984)

A general method is proposed for calculating the populations of excited acceptor states when they interact with energy donors under conditions of nonradiative losses in the acceptor subsystem. The method is suitable for dealing with continuous and pulsed pumping and no restrictions are imposed on the shape of the pump pulses. A study is made of the time dependence of the population of the upper active level 4F3/2 of Nd3+ in gadolinium scandium gallium garnet (GSGG) crystals containing chromium and neodymium. An allowance is made for energy migration in the donor subsystem in the case of low and high Nd3+ ion concentrations when, in the latter case, concentration self-quenching of Nd3+ is observed. A quantitative agreement is obtained between the calculated and experimental results and an increase in the population of the 4F3/2 level of Nd3 + because of sensitization of the Nd3+ luminescence by Cr3+ ions is found. The proposed calculation method is used to determine the optimal concentrations of Nd3+ in GSGG:Cr:Nd crystals under continuous and pulsed lasing conditions.
RAPD Analyses of Taxaceae and Its Related Taxa (2000)

Eleven species of Taxaceae and its related taxa were analyzed by RAPD. 15 primers screened from 80 random primers were found to produce clear patterns and 14 of them showed polymorphic. The results generated by utilizing UPGMA method to cluster the genetic distances calculated from RAPD data implied:① both of the two genera, Amentotaxus and Pseudotaxus should be included in Taxaceae; it is not necessary to treat Amentotaxus as a separated family;② Taxaceae could be divided into three tribes, Taxeae (including Taxus and Pseudotaxus), Amentotaxeae and Torreyeae;③ it was supported to constructsect. Pectinatae to show the special taxonomic position of Cephalotaxus oliveri in the genus of Cephalotaxus ;④ the 11 species were clustered into three groups corresponding to the Taxaceae,Cephalotaxaceae and Podocarpaceae; Podocarpaceae was more close to Cephalotaxaceae than it to Taxaceae.
Lignins as formulating agents for controlled release in agriculture (1983)

Abstract The use of naturally‐occurring polymers, and in particular, kraft lignin, for controlled release pesticide formulations is reviewed. A matrix of kraft lignin containing polar pesticides can be prepared in granular form and the release rates of the active ingredient from this formulation are described. Successful applications of this type of formulation include herbicides for weed control in conifer plantation and insecticides in tropical flooded rice.
Colossal Room-Temperature Electrocaloric Effect in Ferroelectric Polymer Nanocomposites Using Nanostructured Barium Strontium Titanates (2015)

The electrocaloric effect (ECE) refers to conversion of thermal to electrical energy of polarizable materials and could form the basis for the next-generation refrigeration and power technologies that are highly efficient and environmentally friendly. Ferroelectric materials such as ceramic and polymer films exhibit large ECEs, but each of these monolithic materials has its own limitations for practical cooling applications. In this work, nanosized barium strontium titanates with systematically varied morphologies have been prepared to form polymer nanocomposites with the ferroelectric polymer matrix. The solution-processed polymer nanocomposites exhibit an extraordinary room-temperature ECE via the synergistic combination of the high breakdown strength of a ferroelectric polymer matrix and the large change of polarization with temperature of ceramic nanofillers. It is found that a sizable ECE can be generated under both modest and high electric fields, and further enhanced greatly by tailoring the morphology of the ferroelectric nanofillers such as increasing the aspect ratio of the nanoinclusions. The effect of the geometry of the nanofillers on the dielectric permittivity, polarization, breakdown strength, ECE and crystallinity of the ferroelectric polymer has been systematically investigated. Simulations based on the phase-field model have been carried out to substantiate the experimental results. With the remarkable cooling energy density and refrigerant capacity, the polymer nanocomposites are promising for solid-state cooling applications.
Effect of Out-of-Plane Alkyl Group’s Position in Dye-Sensitized Solar Cell Efficiency: A Structure–Property Relationship Utilizing Indoline-Based Unsymmetrical Squaraine Dyes (2016)

Squaraine dyes are promising chromophores to harvest visible and near-infrared (NIR) photons. A series of indoline-based unsymmetrical squaraine (SQ) dyes that contain alkyl chains at sp<sup>3</sup> C- and N- atoms of indoline moieties with a carboxylic acid anchoring group were synthesized. The optical and electrochemical properties of the SQ dyes in solution were nearly identical as there was no change in the D-A-D SQ framework; however, remarkable changes with respect to the power conversion efficiencies (PCE) were observed depending upon the position of alkyl groups in the dye. Introduction of alkyl groups to the indoline unit that was away from anchoring unit were helped in more dye loading with controlled organization of dyes on surface, increased charge transfer resistance, long electron lifetime, and hence higher PCE than that of the corresponding isomer in which the alkyl groups funtionalized indoline unit contains the carboxylic acid anchoring group. Careful analysis of incident photon-to-current conversion efficiency (IPCE) profiles indicated the presence of aggregated structure on the TiO<sub>2</sub> surface that contributes to the charge injection in the presence of a coadsorbent. A dye-sensitized solar cell (DSSC) device made out of SQ5 was achieved an efficiency of 9.0%, with an open-circuit potential (V<sub>oc</sub>) of 660 mV and short-circuit current density (J<sub>sc</sub>) of 19.82 mA/cm<sup>2</sup>, under simulated AM 1.5G illumination (100 mW/cm<sup>2</sup>). The IPCE profile of SQ5 shows an onset near to 750 nm with a good quantum efficiency (>80%) in the range of 550-700 nm, indicating the importance of self-organization of dyes on the TiO<sub>2</sub> surface for an efficient charge injection. This present investigation revealed the importance of position of alkyl groups in the squaraine-based dyes for the better PCE.
Efficient HPLC Purification of Endohedral Metallofullerenes on a Porphyrin-Silica Stationary Phase (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEfficient HPLC Purification of Endohedral Metallofullerenes on a Porphyrin-Silica Stationary PhaseJie Xiao, Michael R. Savina, Glenn B. Martin, Anthony H. Francis, and Mark E. MeyerhoffCite this: J. Am. Chem. Soc. 1994, 116, 20, 9341–9342Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https://pubs.acs.org/doi/10.1021/ja00099a066https://doi.org/10.1021/ja00099a066research-articleACS PublicationsRequest reuse permissionsArticle Views423Altmetric-Citations60LEARN 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
The Formulation of a Therapeutic Paradigm (1998)

ABSTRACT This article describes the development of a therapeutic paradigm through the course of the author's career as a college psychotherapist. The paradigm that is described incorporates a variety of (sometimes disparate) theories, hut is essentially psychoanalytic. The paradigm is viewed by the author as a dynamic process that is subject to change and elaboration as the therapist's understanding of social and psychological factors grows and undergoes refinement.
Harvesting Water Wave Energy by Asymmetric Screening of Electrostatic Charges on a Nanostructured Hydrophobic Thin-Film Surface (2014)

Energy harvesting from ambient water motions is a desirable but underexplored solution to on-site energy demand for self-powered electronics. Here we report a liquid-solid electrification-enabled generator based on a fluorinated ethylene propylene thin film, below which an array of electrodes are fabricated. The surface of the thin film is charged first due to the water-solid contact electrification. Aligned nanowires created on the thin film make it hydrophobic and also increase the surface area. Then the asymmetric screening to the surface charges by the waving water during emerging and submerging processes causes the free electrons on the electrodes to flow through an external load, resulting in power generation. The generator produces sufficient output power for driving an array of small electronics during direct interaction with water bodies, including surface waves and falling drops. Polymer-nanowire-based surface modification increases the contact area at the liquid-solid interface, leading to enhanced surface charging density and thus electric output at an efficiency of 7.7%. Our planar-structured generator features an all-in-one design without separate and movable components for capturing and transmitting mechanical energy. It has extremely lightweight and small volume, making it a portable, flexible, and convenient power solution that can be applied on the ocean/river surface, at coastal/offshore areas, and even in rainy places. Considering the demonstrated scalability, it can also be possibly used in large-scale energy generation if layers of planar sheets are connected into a network.
Presence or absence of light moduli: The controlling feature for supersymmetry phenomenology (2013)

Supersymmetry and string theory suggest the existence of light moduli. Their presence, or absence, controls the realization of supersymmetry at low energies. If there are no such fields, or if all such fields are fixed in a supersymmetric fashion, the conventional thermal production of lightest supersymmetric particle dark matter is possible, as is an anomaly-mediated (``mini-split'') spectrum. On the other hand, the axion solution to the strong $CP$ problem is not operative, and slow roll inflation appears difficult to implement. If there are light moduli, a mini-split spectrum is less generic, weakly interacting dark matter appears atypical, and the supersymmetry scale is likely tens of TeV or higher.
Liquid Crystal Behavior of Single-Walled Carbon Nanotubes Dispersed in Biological Hyaluronic Acid Solutions (2007)

We report the spontaneous liquid crystal phase separation of nanotubes (single-walled carbon nanotubes, SWNTs) stabilized in aqueous biological (hyaluronic acid, HA) solutions. Sonication of SWNTs in solutions of HA produced well-dispersed single-phase isotropic dispersions which, over time, phase separated into dispersions containing birefringent nematic domains in equilibrium with an isotropic phase. The time required for phase separation to occur was shown to depend on the concentration of SWNT and HA, with the attractive interactions between the SWNT and HA shifting the onset of the phase separation toward lower concentration. This phase separation is accompanied by an increase in the dispersion viscosity with this increase qualitatively matching the degree of phase separation. The formation of ordered phases in biological media can offer wide opportunities for processing conducting biomaterials with aligned and oriented domains.
Die anodischen Entladungsteile einer Glimmentladung (1956)

An der Kathode einer selbständigen Glimmentladung beobachtet man stets die gleichen typischen Entladungserscheinungen: nämlich die erste Kathodenschicht oder kathodische Glimmhaut, den HITTORFschen Dunkelraum und das negative Glimmlicht. Diese Entladungserscheinungen sind für den Mechanismus einer selbständigen Glimmentladung erforderlich und für ihn so charakteristisch, daß man geradezu eine Gasentladung als selbständige Glimmentladung anspricht oder nicht, je nachdem ob sie diese Entladungsteile aufweist oder nicht.
Background to the Transvaal Iron Age - new discoveries at Olifantspoort and Broederstroom (1974)

The work being done on Iron Age sites in the Transvaal is descriptionbed, with particular reference to the finds at Olifantspoort and Broederstroom. The material so far found provides evidence for the production of iron and copper, the farming of cattle and sheep, and the construction of large villages by people who were probably ancestral to the present Bantu population. The material dates from as early as A.D. 270, but clear indications occur from A.D. 460 onwards.
Non-Linearity Analysis of RF Ohmic Switches Based on Phase Change Materials (2014)

We report on a thermoelectric model that can be used to analyze the nonlinearity and power handling capability of RF switches based on phase change (PC) materials. To analyze the nonlinear behavior of the PC switches, the Poole-Frenkel effect, the variation of thermal and electrical conductance with temperature, and the effect of Joule heating with increased RF signal power are all taken into account. The simulated input third-order intercept point and the 1-dB compression point (P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1dB</sub> ) are compared with measured results of directly heated PC switches, showing a good agreement. Using this model, we provide insights into the effect of electrical resistance, and thermal properties, as well as the operation frequency on the switch nonlinearity and power handling capability.
Influence of PEG-conjugated Hemoglobin on Tumor Oxygenation and Response to Chemotherapy (2008)

Hypoxic tumors are significantly more malignant, metastatic, radio- and chemoresistant. The use of artificial oxygen carriers represents a new approach to the problem of hypoxia. In the present study, female athymic BALB/c nude mice bearing the cervical carcinoma were untreated or treated with cisplatin to determine whether administration of artificial oxygen carrier (PEG-conjugated Hemoglobin, PEG-Hb) could improve the tumor oxygenation and enhance the anti-tumor efficacy of cisplatin. Pimonidazole staining was employed to detect tumor tissue oxygenation status. We found that the application of a higher dose (0.6 g/kg) PEG-Hb could significantly ameliorate the hypoxic condition in cervical carcinoma xenograft models. Co-administration of PEG-Hb (0.6 g/kg) with cisplatin produced significant tumor growth inhibition and pro-apoptotic and anti-proliferative effects as compared to cisplatin alone. These suggest the evaluated PEG-Hb in this experiment has positive effects on cisplatin or cisplatin-based chemotherapy, and further work to optimize its application is warranted.