gebhart/patrepeval huggingface dataset:
Multiple model adaptive control with safe switching (2001)

Abstract The purpose of this paper is to marry the two concepts of multiple model adaptive control and safe adaptive control. In its simplest form, multiple model adaptive control involves a supervisor switching among one of a finite number of controllers as more is learnt about the plant, until one of the controllers is finally selected and remains unchanged. Safe adaptive control is concerned with ensuring that when the controller is changed in an adaptive control algorithm, the frozen plant–controller combination is never (closed‐loop) unstable. This is a non‐trivial task since by definition of an adaptive control problem, the plant is not fully known. The proposed solution method involves a frequency‐dependent performance measure and employs the Vinnicombe metric. The resulting safe switching guarantees depend on the extent to which a closed‐loop transfer function can be accurately identified. Copyright © 2001 John Wiley & Sons, Ltd.
Jiu Jitsu para el desarrollo perceptivo motriz con niños de 8 - 9 años en tiempos de COVID-19 (2021)

En los niños del “Centro Pedagógico Mándala” se observan dificultades en sus capacidades motrices, la corporalidad, espacialidad, coordinación, el manejo de lateralidad y por ende, el equilibrio. <strong>Objetivo</strong>: Contribuir en el desarrollo perceptivo motriz de los niños a partir del Jiu Jitsu. <strong>Metodología: </strong>Enfoque cuantitativo, tipo pre experimental, de corte longitudinal en una muestra intencionada y a conveniencia de 6 niños, entre 8-9 años. Se aplicó un programa de Jiu Jitsu de 12 sesiones durante 6 semanas. <strong>Resultados</strong>: En el test Ktk inicial el 100% de los niños se encontraron posicionados en perturbación de la coordinación con un puntaje inferior a 85, en el test final un 83 % se ubicaron en muy buena coordinación y 16,6 % en coordinación normal debido al puntaje alcanzado entre 115 y 140. El test fantástico inicial evidenció 87 puntos de 120 que corresponden a una calificación de “Buen trabajo”, en la fase final, los datos arrojados mostraron 106 puntos en un máximo de 120 lo que ubicó a los niños en un “Estilo de vida Fantástico” <strong>Conclusiones:</strong> Los ejercicios físicos dirigidos dentro de la práctica del Jiu Jitsu en dichas edades, generaron mejoras significativas en el desarrollo perceptivo motriz, físico, social y mental en los participantes.
Effect of silane coupling agent on the polymer‐filler interaction and mechanical properties of silica‐filled NR (2005)

Abstract The effects of filler loading and a new silane coupling agent 3‐octanoylthio‐1‐ propyltriethoxysilane (NXT silane) on the polymer‐filler interaction and mechanical properties of silica‐filled and carbon black‐filled natural rubber (NR) compounds were studied. Silica (high dispersion silica7000GR, VN2, and VN3) and carbon black (N330) were used as the fillers, and the loading range was from 0 to 50 phr. The loading of NXT silane was from 0 to 6 phr. Experimental results show that the maximum and minimum torques of silica and carbon black‐filled NR increase with increasing filler loading. With increasing filler loading, the scorch time and optimum cure time decrease for carbon black‐filled NR, but increase for silica‐filled NR. The minimum torque, scorch time, and optimum cure time decrease because of the presence of NXT silane. For the carbon black and silica‐filled NR, the tensile strength and elongation at break have maximum values, but the hardness, M300, M100, and tear strength keep increasing with filler loading. The mechanical properties of silica‐filled NR were improved in the presence of NXT silane. With increasing filler loading, the storage modulus of filled NR increases, but the loss factor decreases. Carbon black shows the strongest polymer‐filler interaction, followed by VN3, 7000GR, and VN2. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 573–584, 2005
A logical-level approach to data base conversion (1975)

In this paper we describe an ongoing project which is addressing the problem of converting and transferring data bases among disparate data management systems (DMSs). The difficulties in converting a data base from one DMS to another stem from the fact that data base structures are system and application dependent. As a result, data base structures embed constraints of three types: (1) logical-level constraints, such as hierarchies, networks, size and type of fields; (2) storage-level constraints, such as inversion capabilities, access paths, and indexing organization; and (3) physical-level constraints, such as physical devices and block/record structures.The approach taken by this project is based on the concept that the data conversion process can depend basically on conversion at the logical level only. Conversion at this level can be achieved by using existing query and generate capabilities of DMSs to move data from their physical representation to the logical level and vice versa. Detailed descriptions of the system components and the languages supporting them are given.An important aspect of the work is in the area of semantics of logical data conversion. We choose to restrict the basic conversion types to field-to-field mappings. Then, semantic analysis determines which combinations of conversion types are permissible. This approach allows for conversion tools that are powerful yet simple to specify.Finally, some observations on the implications of data conversion needs for the design of data management systems are suggested.
A prototyping environment for hardware/software codesign in the COBRA project (1994)

We present a prototyping environment with special benefit for hardware/software codesign which we use as target architecture in the COBRA project. This architecture is very flexible, easy extensible, and provides a high gate complexity. It supports standard processor integration as well as processor emulation. >
Liposomal-encapsulated Ascorbic Acid: Influence on Vitamin C Bioavailability and Capacity to Protect against Ischemia–Reperfusion Injury (2016)

Intravenous administration of vitamin C has been shown to decrease oxidative stress and, in some instances, improve physiological function in adult humans. Oral vitamin C administration is typically less effective than intravenous, due in part to inferior vitamin C bioavailability. The purpose of this study was to determine the efficacy of oral delivery of vitamin C encapsulated in liposomes. On 4 separate randomly ordered occasions, 11 men and women were administered an oral placebo, or 4 g of vitamin C via oral, oral liposomal, or intravenous delivery. The data indicate that oral delivery of 4 g of vitamin C encapsulated in liposomes (1) produces circulating concentrations of vitamin C that are greater than unencapsulated oral but less than intravenous administration and (2) provides protection from ischemia-reperfusion-mediated oxidative stress that is similar to the protection provided by unencapsulated oral and intravenous administrations.
Frequency-independent equivalent-circuit model for on-chip spiral inductors (2003)

A wide-band physical and scalable 2-π equivalent circuit model for on-chip spiral inductors is developed. Based on physical derivation and circuit theory, closed-form formulas are generated to calculate the RLC circuit elements directly from the inductor layout. The 2-π model accurately captures R(f) and L(f) characteristics beyond the self-resonant frequency. Using frequency-independent RLC elements, this new model is fully compatible with both ac and transient analysis. Verification with measurement data from a SiGe process demonstrates accurate performance prediction and excellent scalability for a wide range of inductor configurations.
Turing completeness in the language of genetic programming with indexed memory (2002)

Genetic programming is a method for evolving functions that find approximate or exact solutions to problems. There are many problems that traditional genetic programming (GP) cannot solve, due to the theoretical limitations of its paradigm. A Turing machine (TM) is a theoretical abstraction that expresses the extent of the computational power of algorithms. Any system that is Turing complete is sufficiently powerful to recognize all possible algorithms. GP is not Turing complete. This paper proves that when GP is combined with the technique of indexed memory, the resulting system is Turing complete. This means that, in theory, GP with indexed memory can be used to evolve any algorithm.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
New low-voltage electrically tunable triode-MOSFET transconductor and its application to low-frequency Gm-C filtering (2005)

A new low-voltage electrically tunable transconductor is presented. Its transconductance can be settled by means of a ratio between a reference current and a reference voltage rendering the circuit independent of technological parameters, to a first order approach. This property allows, to some extent, reusing the transconductor in several CMOS processes. A kind of linear current division strategy turns also the transconductance inversely proportional to a product of two ratios between transistors' sizes that can be chosen so as to meet the desired Gm order of magnitude. This feature, together with a low-current biasing policy, is exploited in order to get a transconductance in the range of lnS, as needed for very low-frequency filters. For a 2 V supply and a 20pF load capacitor, an integrator characterization in a 1.6mum CMOS technology revealed a unity-gain frequency fT of 10Hz, a current consumption of 220nA and an input-referred noise of 2.2muVrms. Using this transconductor, a 10Hz third-order low-pass transconductance-capacitor (Gm-C) Butterworth filter was designed. It is intended for smoothing the output of a chopper amplifier. The filter shows acceptable performance in terms of die area (1.9mm2) and power consumption (1muAV), as desired for low-voltage low-power (LVLP) applications
Fixing cystic fibrosis by correcting CFTR domain assembly (2012)

For cystic fibrosis (CF) patients most therapies focus on alleviating the disease symptoms. Yet the cellular basis of the disease has been well studied; mutations in the CF gene can impair folding, secretion, cell surface stability, and/or function of the CFTR chloride channel. Correction of these basic defects has been a challenge, but indicates that a deeper understanding of the molecular and cellular mechanism of mutations is a prerequisite for developing more efficient therapies.
A Novel Method for Synthesizing an Automatic Matching Network and Its Control Unit (2011)

We present a novel method simplifying matching network synthesis and design based on a tunable low-pass <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$\pi$</tex> </formula> matching network topology. This method exploits the Smith chart in a novel way. Analytic expressions for calculating the optimal matching network for automatically adapting the load to the source impedance are derived. This work is applied to a new antenna tuning unit concept able to calibrate the system in a single iteration process reducing strongly both the speed and the overall consumption of the antenna calibration module. The obtained matching network nodal and load quality factors are analyzed and the matching network efficiency is evaluated to highlight the impact of the imperfection in the design. The simulation and experimental results are presented to validate the proposed method and to evaluate the obtained matching efficiency. We perform reflection coefficients less than <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${-}30$</tex> </formula> dB, high efficiency matching networks with only 258 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex Notation="TeX">$\mu$</tex></formula> s to calculate the proper state of the tunable matching network under a processor delivering 40 MIPS of performance.
Cross-Cell DoF Distribution (2015)

Equipped with the multi-user MIMO (MU-MIMO) technology, a WiFi access point (AP) with M antennas can achieve M degrees-of-freedom (DoF) in theory. Existing MU-MIMO protocols strive to maximize DoF usage by serving M users simultaneously. In this paper, through a MU-MIMO testbed measurement, we found that the correlation between users' channels can severely compromise network throughput under a DoF-maximizing strategy. To combat this problem, we propose Kardia that judiciously distributes the DoF to least-correlated users within an AP's cell, and coordinates neighboring APs such that each can serve the best set of users while nulling mutual interference. The key challenge in Kardia lies in efficiently determining which set of users to serve without knowing the channel state from all of them. We propose a lightweight mechanism that enables APs to collaboratively infer the correlation between users through precoded probing packets. Our analysis shows that Kardia's DoF distribution framework has a provable performance guarantee. Our testbed implementation further reveals that Kardia can significantly boost the performance of multi-cell MU-MIMO networks, in contrast to legacy protocols like 802.11ac.
Les mystéres de la supervision à l'aune de la recherche (2010)

Résumé La supervision est l’un des piliers de la formation en psychothérapie. Il est frappant de constater que c’est un processus entouré de mystères et de zones d’ombre. L’article se propose dans un premier temps de préciser les éléments essentiels de la supervision dans le champ psychanalytique, puis s’interroge sur la place de la recherche, dont on sait l’importance grandissante en psychothérapie : quels sont son importance et son impact ? Quels en sont les résultats ? A quelles difficultés majeures doit-elle faire face ? Quelles en sont les perspectives les plus prometteuses ? Si la complexité du domaine et des difficultés liées à la méthodologie des études font que pour l’instant, les évidences empiriques manquent, la recherche dans ce domaine est en plein essor et vise en particulier à instaurer une vraie collaboration entre recherche et pratique clinique.
Thanetian–Ilerdian coralline algae and benthic foraminifera from northeast India: microfacies analysis and new insights into the Tethyan perspective (2014)

Thanetian–Ilerdian carbonate deposits from the Lakadong Limestone in Assam Shelf, Meghalaya, northeast India, are studied with respect to microfacies distributions and controlling ecological factors on dominant biogenic components. Palaeoenvironmental implications are inferred following the detailed analysis of microfacies characterized by rich assemblages of coralline red algae and benthic foraminifera. The carbonate sediments have been interpreted as lagoonal to outer shelf facies. It is envisaged that the analysed benthic communities thrived in a meso-oligotrophic regime above the fair-weather wave base. The Lakadong Limestone constitutes a well-preserved record of Late Palaeocene–earliest Eocene shallow marine carbonate ecosystem and has high potential to decipher its response to an interval of distinct changes in climate and tectonic settings. The abundance of oligotrophic larger benthic foraminifera in the Lakadong Limestone is comparable to the foraminiferal assemblages of west Tethys. The phylogenetic changes (‘Larger Foraminiferal Turnover’, LFT) and subsequent rapid radiation of typical Eocene larger benthic foraminifera (Alveolina, Nummulites) usually observed in the west Tethys have also been observed in the upper part of the Lakadong Limestone. The eastward migration of Eocene foraminifera from the west coincided with the India-Asia collision and global warming events at the Palaeocene–Eocene boundary that may have produced a wide array of modifications in biogeography, seasonal run-offs and ocean circulation pathways. The data indicate that rapid rate of migration from west before the onset of geographic barriers and/or timely restoration of pan-Tethyan environmental conditions ensured the incidence of these forms in the earliest Eocene sediments.
Hepatitis B virus pre-S/S variants in liver diseases (2018)

Chronic hepatitis B is a global health problem. The clinical outcomes of chronic hepatitis B infection include asymptomatic carrier state, chronic hepatitis (CH), liver cirrhosis (LC), and hepatocellular carcinoma (HCC). Because of the spontaneous error rate inherent to viral reverse transcriptase, the hepatitis B virus (HBV) genome evolves during the course of infection under the antiviral pressure of host immunity. The clinical significance of pre-S/S variants has become increasingly recognized in patients with chronic HBV infection. Pre-S/S variants are often identified in hepatitis B carriers with CH, LC, and HCC, which suggests that these naturally occurring pre-S/S variants may contribute to the development of progressive liver damage and hepatocarcinogenesis. This paper reviews the function of the pre-S/S region along with recent findings related to the role of pre-S/S variants in liver diseases. According to the mutation type, five pre-S/S variants have been identified: pre-S deletion, pre-S point mutation, pre-S1 splice variant, C-terminus S point mutation, and pre-S/S nonsense mutation. Their associations with HBV genotype and the possible pathogenesis of pre-S/S variants are discussed. Different pre-S/S variants cause liver diseases through different mechanisms. Most cause the intracellular retention of HBV envelope proteins and induction of endoplasmic reticulum stress, which results in liver diseases. Pre-S/S variants should be routinely determined in HBV carriers to help identify individuals who may be at a high risk of less favorable liver disease progression. Additional investigations are required to explore the molecular mechanisms of the pre-S/S variants involved in the pathogenesis of each stage of liver disease.
Synthesis of Amphiphilic PS-<i>b</i>-PEG-<i>b</i>-PS by Atom Transfer Radical Polymerization (1998)

ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSynthesis of Amphiphilic PS-b-PEG-b-PS by Atom Transfer Radical PolymerizationKatja Jankova, Xianyi Chen, Jorgen Kops, and Walther BatsbergView Author Information Department of Chemical Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark Cite this: Macromolecules 1998, 31, 2, 538–541Publication Date (Web):January 7, 1998Publication History Received10 July 1997Revised12 November 1997Published online7 January 1998Published inissue 1 January 1998https://pubs.acs.org/doi/10.1021/ma9710186https://doi.org/10.1021/ma9710186rapid-communicationACS PublicationsCopyright © 1998 American Chemical SocietyRequest reuse permissionsArticle Views6579Altmetric-Citations281LEARN 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 SUBJECTS:Copolymerization,Copolymers,Polymers,Radical polymerization,Styrenes Get e-Alerts
Compensation of gain saturation in SOA-gates by interferometric Mach-Zehnder wavelength converters (1996)

Compensation of signal degradation in SOA-gates for optical switch nodes using all-active integrated Mach-Zehnder interferometric wavelength converters is experimentally demonstrated at 2.5 and 10 Gb/s.More than 10 dB improvement of the dynamic range is obtained compared to a stand-alone SOA-gate.
Hyperglycemia, Polyol Accumulation, and Increased Intracranial Pressure (1971)

Increased intracranial pressure reproducibly occurs in hyperglycemic dogs when the blood glucose level is permitted to fall precipitously and they are rehydrated with isotonic saline solutions. Water intoxication, carbon dioxide accumulation, and osmotic and electrolyte differences between the cerebrospinal fluid (CSF) and plasma did not play major roles in the production of the observed increases in CSF pressure. There was a significant rise in CSF and brain concentrations of fructose and sorbitol in response to hyperglycemia, suggesting that the level of blood glucose regulates the rate of sorbitol and fructose synthesis within the central nervous system, and that there was an increased activity of the polyol (glucose/sorbitol/ fructose) pathway. This potential for the production of increased intracranial pressure may be responsible for the fatal acute cerebral edema observed during the treatment of diabetic acidosis.
Proton spin‐lock ratio imaging for quantitation of glycosaminoglycans in articular cartilage (2002)

We have demonstrated a proton spin-lock ratio imaging method to quantify absolute GAG distribution in the cartilage in a noninvasive and nondestructive manner.
Phosgene‐free synthesis of <i>N</i>‐carboxyanhydrides of α‐amino acids based on bisarylcarbonates as starting compounds (2007)

A new convenient access to N-carboxyanhydride (NCA) monomers has been achieved based on the utilization of bisarylcarbonates as a carbonyl source, which are activated by electron-withdrawing substituents on their aryl groups such as fluorine atom and nitro group. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]
Impact of Information Security Policies on Email-Virus Propagation (2005)

Aimed at tracing out the email-virus propagation rules in communication network, this paper extends the traditional epidemiological model (i. e., SEIR) by taking into account the behavior of email users, such as email checking frequency and anti-virus information security policies, and discusses the factors that affect the email-virus propagation in an organization. With the extended SEIR model, namely E-SEIR, three aspects of information security policies (i. e., immunization, information security training,and user recovery support) are investigated in terms of their impacts on the email virus propagation. The results show that the E-SEIR model is suitable to reflect the propagation pattern of email virus, and may also be used in anti-virus policies simulation and evaluation.