gebhart/patrepeval huggingface dataset:
The parallel approach to force/position control of robotic manipulators (1993)

Force/position control strategies provide an effective framework to deal with tasks involving interaction with the environment. In this paper the parallel approach to force/position control of robotic manipulators is presented. It shows a complete use of the available sensor measurements by operating the control action in a full-dimensional space without using selection matrices. Conflicting situations between the position and force tasks are managed using a priority strategy: the force control loop is designed to prevail over the position control loop. This choice ensures limited deviations from the prescribed force trajectory in every situation, guaranteeing automatic recovery from unplanned collisions. A dynamic force/position parallel control law is presented and its performance in presence of an elastic environment is analyzed; simplification of the dynamic control law is also discussed leading to a PID-type parallel controller. Two case studies are worked out that show the effectiveness of the approach in application to an industrial robot.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Molecular profiles of inflammatory myopathies (2002)

The molecular profiles of muscle tissue in patients with inflammatory myopathies are distinct and represent molecular signatures from which diagnostic insight may follow. Large numbers of differentially expressed genes are rapidly identified.
Phase transitions in a ferrofluid at magnetic-field-induced microphase separation (2001)

In the presence of a magnetic field applied perpendicular to a thin sample layer, a suspension of magnetic colloidal particles (ferrofluid) can form spatially modulated phases with a characteristic length determined by the competition between dipolar forces and short-range forces opposing density variations. We introduce models for thin-film ferrofluids in which magnetization and particle density are viewed as independent variables and in which the nonmagnetic properties of the colloidal particles are described either by a lattice-gas entropy or by the Carnahan-Starling free energy. Our description is particularly well suited to the low-particle-density regions studied in many experiments. Within mean-field theory, we find isotropic, hexagonal and stripe phases, separated in general by first-order phase boundaries.
Properties of Liquid Water: Origin of the Density Anomalies (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of Liquid Water: Origin of the Density AnomaliesMary Vedamuthu, Surjit Singh, and G. Wilse RobinsonCite this: J. Phys. Chem. 1994, 98, 9, 2222–2230Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.org/doi/10.1021/j100060a002https://doi.org/10.1021/j100060a002research-articleACS PublicationsRequest reuse permissionsArticle Views1193Altmetric-Citations151LEARN 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 options Get e-Alerts
Gravity model improvement for SEASAT (1982)

Analysis of the data from the SEASAT altimeter, a 10‐cm precision instrument, requires accurate knowledge of the radial position of the spacecraft for oceanographic applications such as the study of tides and ocean circulation as well as for geodetic applications. Initial orbit determinations using the best available geodetic and force models gave radial errors approaching 5 m. The dominant source of this radial error was the gravity field model. Improvements in the gravity modeling were made by successively incorporating the SEASAT laser and Unified S Band ground tracking data, the GEOS 3 altimeter data, and finally, the SEASAT altimeter data. With the most recent model (a set of spherical harmonic coefficients complete to degree and order 36), SEASAT ephemerides have been computed for an orbital arc length of 12 days with an rms radial accuracy of about 70 cm.
Fusion protein--A new technology of biological engineering (2001)

Affinity peptide (Marker) became more important in the development of genetic engineering. The strategies of fusion protein designing and its advantages and disadvantages in the bioprocessing of recombinant proteins, were introduced in this article.
Optimal software pipelining of loops with control flows (2002)

Software pipelining is widely used as a compiler optimization technique to achieve high performance in machines that exploit instruc-tion-level parallelism. However, surprisingly, there have been few theoretical or empirical results on optimal software pipelining of loops with control flows. In this paper, we present three new contributions for this under-investigated problem. First, we propose a necessary and sufficient condition for a loop with control flows to have an optimally software-pipelined program. We also present a decision procedure to compute the condition. Second, we present two software pipelining algorithms. The first algorithm computes an optimal solution for every loop satisfying the condition, but may run in exponential time. The second algorithm computes optimal solutions efficiently for most (but not all) loops satisfying the condition. Third, we present experimental results which strongly indicate that achieving the optimality in the software-pipelined programs is a viable goal in practice with realistic hardware support.
Sub-10-fs, terawatt-scale Ti:sapphire laser system (2003)

A three-stage, 1-kHz amplifier system delivering pulses shorter than 10 fs with a peak power in excess of 0.3 TW is reported. Passive and active spectral intensity and phase control allows the preservation of a bandwidth of 120 nm (FWHM) to as high as multimillijoule energy levels and temporal compression of the broadband pulses close to their Fourier limit. The system is scalable to peak powers well beyond 1 TW and holds promise for substantially advancing the state of the art of coherent laboratory soft-x-ray sources.
Methyl‐diethanolamine degradation — Mechanism and kinetics (1997)

Abstract Methyl‐diethanolamine (MDEA) degradation reactions between aqueous solutions of MDEA and CO 2 have been carried out in a 600 mL stirred autoclave under the following conditions: initial MDEA solution concentration 20‐50 mass%, solution temperature 100‐200°C, CO 2 partial pressure 1.38‐4.24 MPa. It was found that MDEA degrades quite rapidly (although more slowly than diethanolamine under comparable conditions) at elevated temperatures and CO 2 partial pressures. Degradation products are identified by gas chromatography and mass spectrometry (GC/MS). An MDEA degradation reaction mechanism and kinetic model predicting concentration changes is proposed and verified.
Enhanced electron attachment to superexcited states of saturated tertiary amines (1991)

Electron attachment measurements on excimer–laser-excited superexcited states (SES) of saturated amine compounds, and in particular on triethylamine (TEA), have been carried out employing a new experimental technique. A rate equation analysis based on a proposed model shows that the electron attachment rate constant for the SES is several orders of magnitude larger than that for the ground electronic state. The proposed mechanism for electron attachment to SES involves the capture of a near-zero-energy electron—(produced by the same laser pulse that produces the SES)—by a superexcited molecule to form a transient parent anion which subsequently dissociates producing a stable fragment anion. The similarity of the above mechanism to an electron-excited Feshbach resonance is indicated and a scheme for the identification of molecular systems that can be excited (via resonance-enhanced multiphoton excitation) to SES is outlined.
Direct demonstration of sulphonylurea‐sensitive K<sub>ATP</sub> channels on nerve terminals of the rat motor cortex (1995)

We examined whether ATP-sensitive potassium (KATP) channels are present on presynaptic terminals of the rat motor cortex, an area of the CNS exhibiting a high density of sulphonylurea binding. A novel fused nerve terminal preparation was developed which produced structures amenable to patch clamp methods. In inside-out recordings a K+ channel was observed which possessed all the major features of the Type 1 KATP channel, including sensitivity to ATP and the antidiabetic sulphonylureas.
Shear-wave logging with quadrupole sources (1989)

Abstract This paper provides laboratory verification of a novel technique for direct, on-line, shear (S)-wave velocity logging in hard and soft formations using a quadrupole source as recently suggested by theory. Conventional monopole logging tools are not capable of directly measuring the shear-wave velocity in soft formations. Previous theoretical and laboratory experimental work has already shown that a dipole source can be used for direct shear-wave velocity logging in hard and soft formations. I demonstrate in this paper that quadrupole sources can also achieve this objective. Furthermore, the quadrupole source can produce higher resolution of S-wave velocity, since it can be operated at higher frequencies. A power comparison of monopole, dipole, and quadrupole indicates that a field quadrupole logging tool may be expected to produce strong enough signals for practical operation.The present studies were conducted on laboratory scale models representative of sonic logging conditions in the field. I used a limestone model to represent hard formations and a plastic model to simulate a soft formation such as Gulf Coast soft shale or near-surface materials.
Comparing high-level modeling approaches for embedded system design (2005)

This paper present a comparison between three different high-level modeling approaches for embedded systems design, focusing on systems that require dataflow models. The proposed evaluation investigates the facilities provided by these approaches for expressing systems requirements, functional specification, and timing constraints. Properties like model readability, testability, and implementability are also considered. Moreover, the support to different Models of Computation is also evaluated. A Crane Control System is used as case study to apply the proposed comparison criteria.
La argumentación en el discurso periodístico sobre la inmigración (2011)

En este trabajo se estudian los mecanismos argumentativos que los principales medios de comunicacion espanoles emplearon en la cobertura de los de El Ejido ocurridos en la localidad almeriense en febrero de 2000. Para ello, se utilizan dos herramientas fundamentales: el Analisis Critico del Discurso, en tanto que marco metodologico general y la Teoria de la Argumentacion en la Lengua, en tanto que instrumento de trabajo particular. El capitulo I esta dedicado precisamente a presentar el marco metodologico. La finalidad de esta parte es la de comprender adecuadamente el lugar que ocupa el Analisis Critico del Discurso en el seno de los estudios sobre el discurso. El capitulo II trata de analizar que factores del contexto en el que los medios de comunicacion desarrollan su labor tienen una influencia efectiva en las caracteristicas discursivas de las noticias. Para ello se emplea como herramienta general el Modelo de Propaganda elaborado por Noam Chomsky y Edward S. Herman. El capitulo III estudia las caracteristicas mas generales del discurso mediatico sobre la inmigracion. El capitulo IV esta dedicado a la argumentacion. Se exponen los principios teoricos y la evolucion de la Teoria de la Argumentacion en la Lengua, teoria no referencialista que concibe que son los elementos linguisticos y no los hechos del mundo los que determinan el progreso argumentativo de un discurso. Uno de los componentes de este enfoque es la denominada Teoria de los Modificadores Argumentativos. Esta (sub)teoria es principalmente semantica, sin embargo, es posible demostrar que la sintaxis impone igualmente restricciones a los procesos de modificacion argumentativa. Por este motivo, se propone la existencia de un Componente Sintactico en dicha (sub)teoria que es necesario tener en cuenta para comprender correctamente el alcance explicativo de la misma. El capitulo V, finalmente, analiza las estrategias y estructuras argumentativas que los medios de comunicacion espanoles emplearon en la representacion simbolica de los principales actores sociales implicados en los sucesos de El Ejido. Logicamente, un estudio de todos y cada uno de los fenomenos argumentativos tratados en el ambito de la Teoria de la Argumentacion en la Lengua rebasaria con creces los limites de cualquier trabajo. Por ello, el analisis se centra en dos aspectos complejos que permiten explicitar las caracteristicas discursivas de la imagen mediatica de dichos actores: los procesos de modificacion argumentativa y los marcadores argumentativos. Estos dos elementos representan las dos maneras principales a traves de las cuales las unidades linguisticas pueden contribuir en la construccion del significado global de un discurso. En los procesos de modificacion argumentativa entran en juego unidades conceptuales mientras que los marcadores argumentativos son prototipicamente unidades de caracter procedimental o instruccional. Por este motivo, el analisis de estos dos aspectos permite ofrecer un panorama completo de la cobertura mediatica de los sucesos de El Ejido.
CONTRIBUTIONS OF RESEARCH TO IMPROVED HIGHWAY SAFETY (1983)

This article looks briefly at what is happening in highway safety in general, then focuses attention on what research is contributing to improved highway safety. Research underway at the Transportation Research Board (TRB) includes safety or safety-related projects in three of its four divisions. Division D, the National Cooperative Highway Research Program, has five projects programmed with one being directly related to safety and the others having indirect safety benefits. Division B, Special Projects, has five studies underway that were mandated by Congress and all of which have safety implications or elements. In Division A, Regular Technical Activities, the interest in safety in the 165 or so standing committees continues as it has in recent years. By far the larger research program is that encompassed in the Federally Coordinated Program (FCP) of Highway Research and Development of the Federal Highway Administration (FHWA). One of the nine categories of the FCP is devoted to Improved Highway Design and Operation for Highway Safety. Eleven of the 36 current FCP projects are within this category. The research program of the National Highway Traffic Safety Administration is also mentioned, along with a search of the Highway Research Information Service (HRIS) for research in progress related to safety. Tables are included which list the titles of current FCP projects and the research topics found to be in progress by a search of the HRIS data base.
ASPICULAMYCIN, A NEW CYTOSINE NUCLEOSIDE ANTIBIOTIC (1974)

Aspiculamycin, a new cytosine nucleoside with versatile antibiotic activity, wasproduced by a strain of Streptomyces designated as S. toyocaensis var. aspiculamyceticus.The antibiotic was produced in submerged fermentation together with two otherantifungal antibiotics, toyocamycin and an unidentified tetraene antibiotic. Isolation ofaspiculamycin was proceeded by ion-exchange column chromatography of the culturefiltrate on IRC-50 followed by rechromatography on CG-50.
Hierarchical correlation for content-based image retrieval (2011)

This report proposes a hierarchical correlation calculation approach to content-based mammogram retrieval. In this approach, images are represented as a Gaussian pyramid with several reduced-resolution levels. A global search is first conducted to identify the optimal matching position, where the correlation between the query image and the target images in the database is maximal. Local search is performed in the region comprising the four child pixels at a higher resolution level in order to locate the position with maximal correlation at greater resolution. Finally, this position with the maximal correlation found at the finest resolution level is used as the image similarity measure for retrieving images. Experimental results have shown that this approach achieves 59% in precision and 54% in recall when the threshold of correlation is ≥0.5.
Layer assignment for printed circuit boards and integrated circuits (1992)

The layer assignment problem arises in printed circuit board (PCB) and integrated circuit (IC) design. It involves the assignment of interconnect wiring to various planes of a PCB or to various layers of interconnect wires in an IC. This paper reviews basic techniques for layer assignment in both PCBs and ICs. Two types of layer assignment are considered: (1) constrained layer assignment in which routing of interconnections is given and the objective is to assign wires to specific layers, and (2) unconstrained, or topological, layer assignment, in which both the physical routing of interconnections and assignment of the wires to layers is sought. Various objective functions, such as via minimization and minimization of signal delays through interconnect lines are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Relationship between high prolactine levels and migraine attacks in patients with microprolactinoma (2008)

The pathophysiology of pituitary-associated headache is unknown, although structural and functional features of the tumour are proposed mechanisms. The objective of this study was to evaluate whether headache in a population with pituitary micro-adenomas was related to hyperprolactinemia. We recruited 29 patients with microprolactinoma and headache: 16 with migraine (group A) and 13 with tension-type-headache (group B). The prolactin (PRL) levels measured during attacks of headache were significantly higher in nine patients (56%) of group A and in one patient (8%) of group B. In four of the nine patients of group A, PRL increased after thyrotropin-releasing-hormone (TRH) test and induced severe attacks. After dopamine-agonist (DA) treatment, the headache improved in seven (44%) patients of the group A and in two (15%) patients of the group B. Three of the four patients in whom the TRH-test induced headache attacks, improved after DA treatment. We suggest that hyperprolactinemia may contribute to development of pain in migraine subgroups and further TRH-test could be used to predict which patients could benefit by DA therapy.
MORPHOSYS: Efficient Colocation of QoS-Constrained Workloads in the Cloud (2012)

Abstract—In hosting environments such as IaaS clouds, desirable application performance is usually guaranteed through the use of Service Level Agreements (SLAs), which specify minimal fractions of resource capacities that must be allocated for unencumbered use for proper operation. Arbitrary colocation of applications with different SLAs on a single host may result in inefficient utilization of the host’s resources. In this paper, we propose that periodic resource allocation and consumption models – often used to characterize real-time workloads – be used for a more granular expression of SLAs. Our proposed SLA model has the salient feature that it exposes flexibilities that enable the infrastructure provider to safely transform SLAs from one form to another for the purpose of achieving more efficient colocation. Towards that goal, we present MORPHOSYS: a framework for a service that allows the manipulation of SLAs to enable efficient colocation of arbitrary workloads in a dynamic setting. We present results from extensive trace-driven simulations of colocated Video-on-Demand servers in a cloud setting. These results show that potentially-significant reduction in wasted resources (by as much as 60%) are possible using MORPHOSYS.
Initial investigations into low-cost ultra-fine pitch solder printing process based on innovative laser printing technology (1999)

Advances in electronics packaging and assembly technology are driving increased demand for ultra-fine pitch solder deposition. In this work, innovative solder deposition techniques based on laser printing are investigated for low-cost ultra-fine pitch printing applications. This paper investigates the feasibility of using solder particles in off-the-shelf xerographic technology. The physics of two development systems (dual component and monocomponent) is discussed. This inquisition leads to a discussion of triboelectric charging of the solder toners, coating the solder with thin dielectrics, and charge induction by an applied electric field. This initial investigation explores the basic feasibility of xerographic printing techniques using solder and defines future work.
Simultaneous double-sided deposition of HTS films on 3-inch wafers by ICM-sputtering (1999)

The construction of a system which allows simultaneous deposition of HTS films on both sides of 3-inch wafers is described. The wafers are placed in a heating cavity which can be heated to 1000/spl deg/C. Deposition is accomplished through two opposite holes in the cavity by inverted cylindrical magnetron (ICM) sputtering guns. YBaCuO films deposited on 3 inch CeO/sub 2/ buffered sapphire substrates revealed a growth quality and T/sub c/ and j/sub c/ values comparable to standard films with sufficient uniformity on both sides of the wafer. The surface resistance of the films measured in the frequency range of 2.68 to 145 GHz is 20 m/spl Omega/ at the highest frequency.
A comparison of different circuit configurations for an advanced static VAR compensator (ASVC) (2003)

Different circuit configurations for an ASVC are introduced and compared. Investigations are restricted to the stationary behavior with a brief look at parameters for dynamic control of the system. The concepts are extended to series connection of gate turn-off thyristors (GTOs), the multilevel inverter, and the application of more than one inverter. The circuits discussed show very large differences in cost and performance. Therefore, the choice for a certain application has to be made very carefully. The appropriate power rating must be reached by putting a number of GTOs in series. Paralleling of a small number of power circuits may also be considered. For common requirements concerning harmonic distortion of the line current only the best of the circuits allow operation without any filter banks. With three-level inverters and single GTOs as switches the circuits have a power rating of about 14 MVA. To reach 100 MVA would require at least eight GTOs in series.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>