gebhart/patrepeval huggingface dataset:
IDA-Passivity-Based Control for Boost Converter with LC Filter Supplying Constant Power Load (2018)

An interconnection and damping assignment (IDA) passivity-based control (PBC) scheme for boost converter cascaded with LC filter supplying constant power load (CPL) is presented in this paper. The plant is described by port-controlled Hamiltonian (PCH) form. To perfect the implementation of the CPL application, an improved IDA-PBC is introduced based on the error between the desired equilibrium point and the state variable. Furthermore, the virtual damping assignment technique is addressed to tune the dynamic characteristic and an adaptive interconnection matrix is introduced for building the internal links in PCH models. Simulation and experimental results are given to show the effectiveness of the proposed approach.
Helping based on future expectations (2003)

Autonomous agents interacting in an open world can be considered to be primarily driven by self interests. Previous work in this area has prescribed a strategy of reciprocal behavior, based on past interactions, for promoting and sustaining cooperation among such self-interested agents. Here we present a new mechanism where agents base their decisions both on historical data as well as on future interaction expectations. A decision mechanism is presented that compares current helping cost with expected future savings from interaction with the agent requesting help. We experiment with heterogeneous agents that have varying expertise for different job types. We evaluate the effect of both change of agent expertise and distribution of task types on subsequent agent relationships. The reciprocity mechanism based on future expectations is found to be robust and flexible in adjusting to the environmental dynamics.
Silicon- and Plasmonics-based Nanophotonics for Telecom and Interconnects (2012)

We presented a set of fabricated devices based on silicon nanowire waveguides in application to telecom and optical interconnects. New developments in form of hybrid plasmonic waveguides allowing for sub-wavelength light confinement are also included.
Rotating laminar emission camera with Ge‐detector: Further developments (1987)

A germanium (Ge) camera with laminar collimator-detector geometry, ROLEC, simulating a 195 X 195 mm2 detection area, has been constructed and tested. The detector consists of five separate Ge blocks grooved into distinct electrical channels. Results show that ROLEC measuring times have to be about 3 X greater than Anger camera measuring times to achieve a 5% signal-to-noise ratio with each device. Both spatial and energy resolution of the ROLEC exceed that of the Anger camera but sensitivity variations along the detector strips pose a significant problem in development of a clinically useful device.
An Enzymic Method for the Determination of Bilirubin Using an Oxygen Electrode (2000)

An enzymic method for the determination of bilirubin is described, based on the indirect electrochemical monitoring of bilirubin via its reaction with oxygen to biliverdin in the presence of bilirubin oxidase. Amperometric signals due to oxygen depletion were taken by means of an oxygen electrode incorporating an immobilized bilirubin oxidase membrane. The calibration plot shows linearity up to 2.0×10–4 M. This concentration range corresponds to elevated bilirubin concentrations in adults and in newborn infants. The RSD of the method is 3.1 % (1.0×10–4 M bilirubin, n=6). The method is interference free, fast (<3min) and easy to perform. The membrane retains almost 80 % of its initial activity after 30 successive measurements.
QoS routing performance in multihop, multimedia, wireless networks (2002)

We propose an approach to QoS (quality of service) routing in a multimedia, multihop, wireless network. The wireless net can be either stand alone, or connected to the wired net. The main focus of the paper is the QoS routing procedure which can inform the source of the bandwidth and quality of service available to any destination in the wireless network. This knowledge enables the establishment of QoS connections within the wireless network and the efficient support of real time, multimedia traffic. In addition, it enables more effective call acceptance control. In the case of an ATM interconnection, QoS information permits one to extend the ATM virtual circuit service to the wireless network, with possible renegotiation of QoS parameters at the gateway. Simulation experiments show the efficiency of QoS routing in selected multihop, mobile radio network scenarios.
Cartilage-on-chip: a physiologically inspired platform to reproduce articular joint compression and shear strain (2019)

Here, we present a cartilage-on-chip platform comprising an innovative multi-modal actuation unit to subject chondrocyte-laden hydrogel to both compression and shear strain. The response of human chondrocytes to both healthy and pathophysiological mechanical stimulation is evaluated.
Beckmann rearrangement of 3‐aza‐a‐homo‐4α‐androsten‐4,17‐dione oxime and 3‐oxo‐13α‐amino‐13,17‐seco‐4‐androsten‐17‐oic 13,17‐lactam oxime (1983)

Abstract Rearrangements of 3‐aza‐A‐homo‐4α‐androsten‐4, 17‐dione oxime produced a mixture of the normal lactam product and the product of a “second order” cleavage, an unsaturated nitrile. The lactam 3, 17α‐di‐aza‐A, D‐bishomoandrost‐4α‐ene‐4, 17‐dione was also obtained from the rearrangement of the syn ‐3‐oxo‐13α‐amino‐13, 17‐seco‐4‐androsten‐17‐oic‐13, 17‐lactam oxime. The resolution of syn‐ and anti ‐isomers of VIII was effected by column chromatography and their structure was determined by spectral data.
A Low-Loss Microstrip Surface-Mount K-Band Package (2006)

This paper presents a hermetic-compatible surface mount package for microstrip structures designed for K-band applications. The microstrip lines, fabricated on a 250 mum-thick alumina substrate are packaged using a 280 mum-thick silicon cap wafer and gold-gold thermo-compression bonding. A 130 mum cavity is etched in the cap wafer to allow ample space for RF MEMS devices, surface- or bulk-wave acoustic filters, power amplifiers, or multi-chip assemblies. A via-hole transition is used to connect the microstrip line inside the package to the coplanar waveguide (CPW) line on the back side of the alumina wafer. The gold sealing ring is connected to the microstrip ground using via-holes through the alumina wafer to eliminate any parasitic resonance modes and to improve the isolation between the input and output ports. A packaged microstrip line with total dimensions of 2.6 mm has a measured insertion loss and return loss of less than 0.5 dB and 18 dB, respectively, at DC-23 GHz
Terpene Hydrocarbons of Soxhlet and Supercritical-Gas Extracts of Oriental Spruce and Oriental Beech (1984)

Etude des terpenes presents dans l'extrait au Soxhlet a l'acetone et l'extrait par l'acetone supercritique des bois de Picea orientalis et Fagus orientalis
Information Extraction over Structured Data: Question Answering with Freebase (2014)

Answering natural language questions using the Freebase knowledge base has recently been explored as a platform for advancing the state of the art in open domain semantic parsing. Those efforts map questions to sophisticated meaning representations that are then attempted to be matched against viable answer candidates in the knowledge base. Here we show that relatively modest information extraction techniques, when paired with a webscale corpus, can outperform these sophisticated approaches by roughly 34% relative gain.
Faculty Opinions recommendation of Kinetic redistribution of native and misfolded RNAs by a DEAD-box chaperone. (2007)

DExD/H-box proteins are ubiquitously involved in RNA-mediated processes and use ATP to accelerate RNA conformational changes. However, their mechanisms of action, and what determines which RNA species are targeted, are not well understood. Here we show that the DExD/H-box protein CYT-19, a general RNA chaperone, mediates ATP-dependent unfolding of both the native and a long-lived misfolded conformation of a group I catalytic RNA with efficiencies that depend on the stabilities of the RNA species but not on specific structural features. CYT-19 then allows the RNA to re-fold, changing the distribution from equilibrium to kinetic control. Because misfolding is favored kinetically, conditions that allow unfolding of the native RNA give large increases in the population of misfolded species. Our results suggest that DExD/H-box proteins act with sufficient breadth and efficiency to allow structured RNAs to populate a wider range of conformations than would be present at equilibrium. Thus, RNAs may face selective pressure to stabilize their active conformations relative to inactive ones to avoid significant redistribution by DExD/H-box proteins. Conversely, RNAs whose functions depend on forming multiple conformations may rely on DExD/ H-box proteins to increase the populations of less stable conformations, thereby increasing their overall efficiencies.
IL-1 alpha or tumor necrosis factor-alpha stimulate release of three NAP-1/IL-8-related neutrophil chemotactic proteins in human dermal fibroblasts. (1990)

Human dermal fibroblasts in culture secrete three protein-like neutrophil chemotactic factors, when stimulated either with human rIL-1 alpha or IL-1 beta; not, however, after incubation with LPS. These three fibroblast-derived neutrophil-activating proteins (FINAP) could be purified by subsequently performed reversed phase and size exclusion HPLC. By high resolution SDS-PAGE, all the proteins were shown to migrate with an Mr of 6,700 (alpha-FINAP), 3,600 (beta-FINAP), and 5,300 (gamma-FINAP). All purified cytokine preparations were found to be chemotactic for human neutrophils. In addition, all FINAP induced release of lysosomal enzymes in neutrophils. Deactivation of chemotaxin-elicitable enzyme release showed cross-desensitization of all FINAP with NAP-1/IL-8. Western blot analysis of alpha-FINAP by using mAb against neutrophil-activating protein (NAP)-1/IL-8 reveals immunologic cross-reactivity with NAP-1/IL-8. By amino-terminal amino acid sequence analysis alpha-FINAP could be identified as the 77-residue extended form of NAP-1/IL-8 containing the 79-residue form as a minor contaminant. Whereas beta-FINAP has been found to be a truncation product of alpha-FINAP, gamma-FINAP shows identity with authentic melanoma growth stimulatory activity with respect to retention time upon reversed phase HPLC, high resolution SDS-PAGE, and biologic properties, as well as amino-terminal amino acid sequence. These data show that human dermal fibroblasts may actively participate in inflammatory reactions by secretion of proinflammatory cytokines.
Inhibition of Enterovirus Cytopathic Effects by 2-(α-Hydroxybenzyl)-Benzimidazole (1966)

Bablanian, Rostom (The Rockefeller University, New York, N.Y.), Hans J. Eggers, and Igor Tamm. Inhibition of enterovirus cytopathic effects by 2-(alpha-hydroxybenzyl)-benzimidazole. J. Bacteriol. 91:1289-1294. 1966.-2-(alpha-Hydroxybenzyl)-benzimidazole (HBB), a specific inhibitor of enterovirus multiplication, markedly delayed the development of cytopathological changes induced by echovirus 12 or coxsackievirus B4 in monkey kidney cells, but did not prevent the ultimate degeneration of infected cells, even though virus multiplication was inhibited. The study of the development of viral cytopathic effects was facilitated by the use of antiviral immune serum, which restricted the infection to those cells which became infected by the inoculated virus and thereby established single-cycle conditions. With echovirus 12 and coxsackievirus B4 not all cells could be infected initially, even when cultures were inoculated at input multiplicities in excess of 100 plaque-forming units per cell.
We help you watch your steps: Unobtrusive alertness system for pedestrian mobile phone users (2015)

It is well recognized that walking while using mobile phones will make people more susceptible at various risks. Existing studies to improve smartphone users' safety are mainly limited to detecting incoming vehicles. They are not able to address some more common and equally dangerous accidents such as trips, falling from stairs, platforms or falling into an open manhole. These hazards are generally caused by sudden change of ground. In this paper, we propose UltraSee, the first system that is able to detect sudden change of ground for pedestrian mobile phone users. UltraSee augments smartphones with a small ultrasonic sensor which can detect the abrupt change of distance ahead. UltraSee also leverages the context information of smartphone usage such as screen status and holding orientation to improve detection accuracy and reduce energy consumption as well as unnecessary alarms. We have carried out extensive experiments in different scenarios and by different users. The results show that UltraSee can achieve accident detection rate of 94% with false positive rate of 4.4% and reduce unnecessary alarms by 90%. In terms of energy consumption, UltraSee costs only about 20% energy compared to the existing works that only rely on smartphone cameras.
RedCard: Redundant Check Elimination For Dynamic Race Detectors Technical Report UCSC-SOE-13-05 (2013)

Precise dynamic race detectors report an error if and only if an observed program trace exhibits a data race. They must typically check for races on all memory accesses to ensure that they catch all races and generate no spurious warnings. However, a race check for a particular memory access is guaranteed to be redundant if the accessing thread has already accessed that location within the same release-free span. A release-free span is any sequence of instructions containing no lock releases or other \release-like synchronization operations, such as notify or fork. We present a static analysis to identify redundant race checks by reason- ing about memory accesses within release-free spans. In contrast to prior whole program analyses for identifying accesses that are always race-free, our redundant check analysis is span-local and can also be made method- local without any major loss in eectiveness. RedCard, our prototype implementation for the Java language, enables dynamic race detectors to reduce the number of run-time checks by close to 40% with no loss in precision. We also present a complementary shadow proxy analysis for identify- ing when multiple memory locations can be treated as a single location by a dynamic race detector, again with no loss in precision. Combined, our analyses reduce the number of memory accesses requiring checks by roughly 50%.
Convergent evolution of marine mammals is associated with distinct substitutions in common genes (2015)

Phenotypic convergence is thought to be driven by parallel substitutions coupled with natural selection at the sequence level. Multiple independent evolutionary transitions of mammals to an aquatic environment offer an opportunity to test this thesis. Here, whole genome alignment of coding sequences identified widespread parallel amino acid substitutions in marine mammals; however, the majority of these changes were not unique to these animals. Conversely, we report that candidate aquatic adaptation genes, identified by signatures of likelihood convergence and/or elevated ratio of nonsynonymous to synonymous nucleotide substitution rate, are characterized by very few parallel substitutions and exhibit distinct sequence changes in each group. Moreover, no significant positive correlation was found between likelihood convergence and positive selection in all three marine lineages. These results suggest that convergence in protein coding genes associated with aquatic lifestyle is mainly characterized by independent substitutions and relaxed negative selection.
Critical Delocalization of Chiral Zero Energy Modes in Graphene (2015)

Graphene subjected to chiral-symmetric disorder is believed to host zero energy modes (ZEMs) resilient to localization, as suggested by the renormalization group analysis of the underlying nonlinear sigma model. We report accurate quantum transport calculations in honeycomb lattices with in excess of 10^{9} sites and fine meV resolutions. The Kubo dc conductivity of ZEMs induced by vacancy defects (chiral BDI class) is found to match 4e(2)/πh within 1% accuracy, over a parametrically wide window of energy level broadenings and vacancy concentrations. Our results disclose an unprecedentedly robust metallic regime in graphene, providing strong evidence that the early field-theoretical picture for the BDI class is valid well beyond its controlled weak-coupling regime.
Fabrication of large aperture kinoform phase plates in fused silica for smoothing focal plane intensity profiles (1996)

In laser driven inertial confinement fusion systems, it is necessary to produce smooth focal plane intensity profiles [1]. The desired intensity distribution consists of a superGaussian envelope with a superimposed speckle on it. The speckle pattern is smoothed either by the plasma or by other temporal smoothing techniques. Binary random phase plates (RPPs) are inadequate for spatial smoothing as they lead to Airy function envelopes in the far-field and are only 84 % efficient. Furthermore RPPs also introduce large intensity modulations in the propagated intensity past the RPP which can potentially damage the optics downstream from the RPPs.
Negative regulation of α2-adrenergic receptor-mediated Gi signalling by a novel pathway (1999)

Chinese hamster ovary (CHO) cells stably expressing alpha(2) adrenergic receptor (alpha(2)AR) were pretreated with cholera toxin (CTX) and then treated with or without PMA. The alpha(2A)AR-mediated inhibition of forskolin-stimulated cAMP accumulation was completely ablated by CTX pretreatment only after additional treatment with PMA. Although the addition of cycloheximide (protein synthesis inhibitor) and H-89 (cAMP dependent protein kinase inhibitor) did not completely counteract the negative regulation, the elevation of cAMP was a primary factor for negative regulation by treatment with CTX and PMA. In contrast with the cAMP response, the inhibition of membrane adenylate cyclase activity and the agonist competition curve were not influenced by treatment with CTX or PMA, suggesting that a cytosolic factor was involved in this negative regulation. The m2-muscarinic-acetylcholine-receptor-mediated inhibition of the forskolin-stimulated accumulation of cAMP was also attenuated by treatment with CTX and PMA. The ablation of alpha(2A)AR-mediated inhibition was not observed when alpha(2A)AR was expressed in Rat2 fibroblast cells, suggesting that this negative regulation is not dependent on the receptor type but is instead a phenomenon common to G(i)-coupled receptors in CHO cells. Reverse-transcriptase-mediated PCR and Northern blot analysis showed that the expression of GOS8/RGS2 mRNA, which is a member of the regulator of G-protein signalling (RGS) group of proteins, was considerably increased by pretreatment with CTX. These results indicate a novel regulatory pathway, whereby a cytosolic factor induced by the elevation of cellular cAMP levels negatively regulates G(i) signalling in a protein-kinase-C-dependent manner.
Design of analogue and digital building blocks with printed unipolar organic thin-film transistors (2018)

This work presents a number of analogue and digital building blocks, designed with a novel printed unipolar organic technology exploiting gravure. Among digital circuits, the design of e.g. dynamic flip-flops is presented. Reliable memory cells are a key element to create sequential logic, which is widely used in applications such as RFIDs and to address sensor matrixes. In addition, the design of analogue amplifiers is discussed. Topologies achieving high gain and suitable for sensor&lt;br/&gt;interface applications are presented.
Thermal decomposition of cellulose ethers (1999)

The thermostability and thermal decomposition kinetics of methyl cellulose (MC), ethyl cellulose (EC), carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC), and hydroxypropyl–methyl cellulose (HPMC) were characterized in nitrogen and air by thermogravimetry (TG). Various methods of kinetic analysis were compared in case of thermal degradation of the five cellulose ethers. The initial decomposition temperature (Td), temperature at the maximum decomposition rate (Tdm), activation energy (E), decomposition reaction order (n), and pre-exponential factor (Z) of the five cellulose ethers were evaluated from common TG curves and high-resolution TG curves obtained experimentally. The decomposition reactions in nitrogen were found to be of first order for MC, EC, and HPMC with the average E and ln Z values of 135 kJ/mol and 25 min−1, although there were slight differences depending on the analytical methods used. The thermostability of cellulose ethers in air is substantially lower than in nitrogen, and the decomposition mechanism is more complex. The respective average E, n, ln Z values for HEC in nitrogen/air were found to be 105/50 kJ/mol, 2.7/0.5, and 22/8.3 min−1, from constant heating rate TG method. The respective average E, n, and ln Z values for three cellulose ethers (EC/MC/HPMC) in air are 123/144/147 kJ/mol, 2.0/1.8/2.2, 24/28/28 min−1 by using high-resolution TG technique. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 2927–2936, 1999
High-Density Holographic Memory with Random Encoded Reference Beam (2003)

A number of applications require a technology that allows for the storage, retrieval, and processing of a large volume of information. Holographic memory offers high-density data storage with parallel access and high throughput. The random encoding of the reference (RER) beam recording technique allows for a selective mechanism, such as spatial de-correlation, between recorded and reconstruction fields, which is different from traditional Bragg selectivity. This report illustrates experimental results of the RER-hologram memory operation, and its suitability for a solid-state architecture.
[1,2,6-tri-O-galloyl-beta-D-glucopyranose inhibits gp41-mediated HIV envelope fusion with target cell membrane]. (2008)

The HIV transmembrane subunit gp41 mediates the entry of HIV into the target cells. TGGP can inhibit HIV fusion and entry into the target cells by inhibiting the formation of gp41 six-helix bundles, suggesting the potential of TGGP as a microbicide to prevent sexual transmission of HIV.
Automatic Design of Porous Shell Structure Based on Finite Element Mesh (2018)

최근 3차원 프린팅은 기존의 시작품을 신속하게 제조하는 목적에서 기능성 제품을 직접 제조하는 방향으로 영역을 넓히고 있다. 3차원 프린팅은 형상의 제약 없이 복잡한 형상을 제작할 수 있는 특징이 있어 기존 제조공정상의 제한으로 인해 불가능했던 새로운 설계가 가능하다는 장점이 있다. 본 연구에서는 3차원 프린팅 적용을 목적으로 경량화 및 통기성 향상 등에 장점이 있는 다공성 박판 구조물의 자동설계 기법을 개발하였으며, 이를 위해 유한요소망에 기반한 다공성 구조 자동설계 알고리즘을 수치적으로 개발하였다. 개발된 알고리즘을 적용하여 요소망 크기와 구멍 크기에 따른 다공성 구조물 형상의 변화를 고찰하였으며, 요소망 크기 변화에 따라 구멍의 크기를 자동으로 조절할 수 있는 알고리즘을 구현하여 구멍간의 간섭 없이 표면밀도를 60% 이하로 낮출 수 있었다.
First transfemoral percutaneous edge-to-edge repair of the tricuspid valve using the MitraClip system (2016)

In our patient with severe functional tricuspid regurgitation and suitable anatomy, transfemoral percutaneous tricuspid valve repair was technically feasible and safe by using a modified deployment technique of a widely used repair system developed for the mitral valve. The procedure can be performed without technical modification of the device via a transfemoral route and under echocardiographic guidance. However, particular anatomic and technical aspects can compromise an initial procedural success and demand specific considerations in the future.