gebhart/patrepeval huggingface dataset:
De cangrejos, ratones y abejas: habilidad e involucramiento en las ciencias (2018)

Durante mi investigación antropológica en un laboratorio de neurociencias en Buenos Aires participé de clases en las que se realizaron diversos experimentos con animales. Después de rechazar en varias ocasiones la invitación a manipular cangrejos y ratones aludiendo al asco y la aprensión que me suscitaban las criaturas, acepté lidiar con abejas. El análisis de la emotividad como herramienta heurística me permitió indagar en los procesos de formación de una habilidad científica y profundizar en los modos de producir conocimiento de los biólogos que realizan trabajo experimental y de los antropólogos en su trabajo de campo. En este trabajo muestro que tanto las ciencias naturales, cuyas prescripciones metodológicas les indican un trato distante con sus objetos de estudio, como la antropología social, que sostiene para sí, en cambio, el involucramiento en las tramas sociales que estudia, definen las relaciones con los objetos de estudio en las experiencias concretas de investigación. En el contacto y trato cotidiano con éstos, emociones y cuerpos pusieron de manifiesto tensiones entre la distancia y la cercanía existentes entre investigadores e investigados.
Self-organizing feature map with position information and spatial frequency information (2002)

The representation of scale - position information of local features in images is discussed. A feature map is proposed on which scale information is represented in position explicitly in the same manner of position information. The result of a computer simulation to self-organize such a feature map by using a retina-like filter set in the case of one-dimensional input data is shown. This feature map seems useful for scale invariant image recognition.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Enabling secure multitenancy in cloud computing: Challenges and approaches (2012)

Cloud computing provides a multitenant feature that enables an IT asset to host multiple tenants, improving its utilization rate. The feature provides economic benefits to both users and service providers since it reduces the management cost and thus lowers the subscription price. Many users are, however, reluctant to subscribe to cloud computing services due to security concerns. To advance deployment of cloud computing, techniques enabling secure multitenancy, especially resource isolation techniques, need to be advanced further. Difficulty lies in the fact that the techniques range and cross various technical domains, and it is difficult to get the big picture. To cope with that, this paper introduces technical layers and categories, with which it identifies and structures technical issues on enabling multitenancy by conducting a survey. Based on the survey result, this paper discusses technical maturity of multitenant cloud computing from the standpoint of security and the needs for developing both technical and operational security toward the development and wide deployment of multitenant cloud computing.
Suppressing effect of substance P receptor antagonist on sound evoked potentials recorded from the guinea pig cochlea. (1999)

These results suggest that SP might play a role as a transmitter or modulator in the cochlear function.
Instruction-level countermeasures against stack-based buffer overflow attacks (2009)

In this paper, we examine the possibility of using virtualization to implement a countermeasure that protects against buffer overflow attacks. The countermeasure works by adding a few extra instructions to the architecture that are emulated by the hypervisor. After running performance benchmarks, a high overhead was observed. Our proof-of-concept software implementation illustrates that the proposed approach is feasible and that the hardware implementation confirms a negligible overhead.
On the optimization of 3G cellular systems deployment (2002)

This paper presents a combined analytical and practical approach in considering the third-generation mobile systems implementation. Starting from the characteristics of the second-generation cellular systems and the required next-generation features, different possible migration paths towards next-generation systems are analysed. Thus, two basic scenarios - evolutionary and innovative - are described. However, it is shown that considerable modifications in this basic approach can be introduced. A full scale of possible third-generation deployment possibilities is identified. The presented analyses are then used for defining an algorithm for the choice of an optimized solution.
Adaptive M-QAM Modulation for MIMO Systems (2005)

Adaptive modulation substantially increases the throughput of a wireless network by adjusting the modulation index to the channel conditions. In this paper, we propose algorithms for implementing adaptive M-QAM modulation for both OL- and CL-MIMO systems. The goal is to maximize the throughput subject to a target BER constraint. For OL-MIMO, the algorithm proposed finds the number of transmit antennas and the modulation index to be used for all streams. For CL-MIMO, the authors propose a new rate maximization scheme that, on the average, has 23% throughput improvement over OL-MIMO. The authors modify the water-filling and MMSE solutions to accommodate adaptive modulation and BER constraints. Flat Rayleigh-fading channel model is used in the simulations and assumes a perfect channel estimation.
Evaluation of a mapping strategy based on smooth arc splines for different road types (2013)

Digital maps enrich advanced driver assistance systems by providing information on the local environment of a vehicle. This paper presents various results of a mapping strategy which uses smooth arc splines as geometric model. For any given tolerance, the curve approximation method (SMAP) generates a smooth arc spline with the minimally possible number of curve segments. The evaluation shows the performance of this method regarding the accuracy, the data volume and significant curvature characteristics on both rural and highway roads. It can be stated that the arc spline approximation generally outperforms polygonal representations regarding the information content and the number of segments which has a direct influence on the computational complexity of map calculations and the required data volume for the map storage. These properties are beneficial for many driver assistance system applications like autonomous driving. Furthermore, it is shown that the curvature estimation in the curve apexes is widely stable for a broad range of approximation tolerance values which is crucial for curve speed warnings.
A multiplex polymerase chain reaction to differentiate  -lactamase plasmids of Neisseria gonorrhoeae (2000)

In penicillinase-producing Neisseria gonorrhoeae (PPNG), resistance to penicillin may be mediated by one of several related plasmids of different sizes. These include the Asian, African and Rio/Toronto plasmids. Identification of these plasmids provides useful epidemiological information, but has necessitated plasmid purification and gel analysis. We have developed a rapid, simple multiplex polymerase chain reaction (PCR) which discriminates between the beta-lactamase resistance plasmids that are frequently found in strains of N. gonorrhoeae. Amplicons of 1191, 958 and 650 bp were produced from strains containing the African, Asian and Rio/Toronto plasmids, respectively, whilst no products resulted from non-PPNG strains harbouring the cryptic, conjugative or tetracycline resistance plasmids. PCR analysis of 123 strains of PPNG identified 60 strains with African, 16 strains with Asian and 47 strains with Rio/Toronto plasmids and showed complete agreement with the standard plasmid analysis.
Rapid modeling of power electronics thermal management technologies (2009)

A methodology was developed to rapidly evaluate trade-offs associated with alternative packaging configurations and thermal management technologies for power electronics packaging. The methodology includes the integration of available experimental correlations, computational fluid dynamics results, parametric 3D finite element analysis (FEA) thermal models, and established heat exchanger analysis techniques. The parametric 3D FEA model enables sensitivity studies related to the power module package configuration and cooling technologies. This paper focuses on the study of alternative cooling technologies as they are applied to a fixed power module package. The methodology is applied to a double-sided power module package for several alternative cooling technologies.
One-Dimensional Soft-Demapping Algorithms for Rotated QAM and Software Implementation on DSP (2013)

To improve detection performance of quadrature amplitude modulation (QAM), signal space diversity (SSD) has been exploited and adopted for the second generation of digital video broadcasting (DVB-T2) system. Maximum-likelihood detection (MLD) to get full SSD is avoided because of enormous computational complexity. Its max-log approximated detection (full search algorithm) and subregion based soft-demappers are also too complex to be implemented due to their two-dimensional (2D) Euclidean distance calculation. In particular, the complexity becomes the main burden for the software implementation, which is attractive for multistandard broadcasting receivers. To tackle the main bottleneck, we propose one-dimensional (1D) soft-demappers. By reformulating a rotated QAM signal as two layered pulse amplitude modulation (PAM) signals, the full search algorithm is simplified to an MMSE decorrelation followed by 1D soft-demapping, where Gaussian approximation is used for the interferences. Additional interference cancellation is considered to further suppress its residual interference. For 256-QAM with 4/5 code rate in memoryless Rayleigh channels with/without erasures, the performance gap to the full search is within 0.15 dB at 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> bit error rate (BER), while the complexity is less than 8%. Due to the significant complexity reduction of the proposed algorithms, the software implementation of a DVB-T2 receiver on DSP is feasible with 73% less computations than the one with the full-search-based soft-demapper.
A dynamic channel allocation algorithm in TDD mode CDMA systems (2002)

In the 3G mobile communication systems, the services consist of symmetric services such as voice service and asymmetric services such as WWW browsing. The TDD mode CDMA systems can adapt itself well to time varying asymmetric traffic. In this paper, a new dynamic channel allocation (DCA) model based on Markov decision programming (MDP) has been established to dynamically adapt the switching point in the TDD radio frame according to the states of the system. Simulation results have shown that it will decrease the system blocking rate and increase the resource usage compared with the fixed channel allocation (FCA) scheme.
Anatomy and function of the orbital frontal cortex, II: Function and relevance to obsessive-compulsive disorder (1996)

The authors review neurophysiological, neurobehavioral, and neuropsychological investigations of the orbital frontal cortex (OFC) in human and non-human primates. The article critically examines the role of the OFC in 1) recognition of reinforcers; 2) stimulus-reinforcer learning; 3) modulation of responses based on changes in reinforcement contingencies; 4) emotions, social behavior, and autonomic regulation; 5) mnemonic functions; and 6) rule learning. Examining these functional areas with reference to the OFC's anatomical and neurophysiological properties, the authors suggest ways in which the OFC might contribute to obsessive-compulsive disorder.
Mutagenesis studies on the sensitivity of Escherichia coli acetohydroxyacid synthase II to herbicides and valine (2000)

Acetohydroxyacid synthase (EC 4.1.3.18, also known as acetolactate synthase) isoenzyme II from Escherichia coli is inhibited by sulphonylurea and imidazolinone herbicides, although it is much less sensitive than the plant enzyme. This isoenzyme is also unusual in that it is not inhibited by valine. Mutating S100 (Ser100 in one-letter amino acid notation) of the catalytic subunit to proline increases its sensitivity to sulphonylureas, but not to imidazolinones. Mutating P536 to serine, as found in the plant enzyme, had little effect on the properties of the enzyme. Mutating E14 of the regulatory subunit to glycine, either alone or in combination with the H29N (His29 → Asn) change, did not affect valine-sensitivity.
Heparin strongly decreases the rate of inhibition of neutrophil elastase by alpha 1-proteinase inhibitor (1991)

Heparin depresses the second-order rate constant ka for the inhibition of neutrophil elastase by alpha 1-proteinase inhibitor. High molecular mass heparin decreases ka from 1.3 x 10(7) M-1 s-1 to a limit of 4.6 x 10(4) M-1 s-1. Low molecular mass heparin is about 7-fold less effective. Dermatan sulfate and chondroitin sulfate are less efficient. Heparin preparations used in clinical care also strongly depress ka when tested at concentrations corresponding to their clinical efficacy. Heparin also decreases the ka for the elastase/eglin c and the cathepsin G/alpha 1-proteinase inhibitor systems but not that for the alpha 1-proteinase inhibitor/pancreatic elastase or trypsin pairs. These results, together with Sepharose-heparin binding studies, indicate that the ka-depressing effect of the polymer is related to its ability to form a tight complex with elastase but not with alpha 1-proteinase inhibitor. One mol of high molecular mass heparin binds 3 mol of neutrophil elastase with a Kd of 3.3 nM. Low molecular mass heparin binds elastase with a 1:1 stoichiometry and a Kd of 89 nM. For both heparins ka is lowest when elastase is fully saturated with heparin. From this we conclude that heparin decreases ka, because the heparin-elastase complex is able to slowly react with alpha 1-proteinase inhibitor and not because the inhibitor slowly dissociates the heparin-elastase complex. These findings may have important pathophysiological bearing.
Apelin Has In Vivo Inotropic Effects on Normal and Failing Hearts (2004)

The present study is the first to show that apelin has positive inotropic effects in vivo in both normal rat hearts and rat hearts in failure after myocardial infarction. Apelin may have use as an acute inotropic agent in patients with ischemic heart failure.
Improving cascading classifiers with particle swarm optimization (2005)

This paper addresses the issue of class related reject thresholds for cascading classifier systems. It has been demonstrated in the literature that class related reject thresholds provide an error-reject tradeoff better than a single global threshold. In this work we argue that the error-reject tradeoff yielded by class-related reject thresholds can be further improved if a proper algorithm is used to find the thresholds. In light of this, we propose using a recently developed optimization algorithm called particle swarm optimization. It has been proved to be very effective in solving real valued global optimization problems. In order to show the benefits of such an algorithm, we have applied it to optimize the thresholds of a cascading classifier system devoted to recognize handwritten digits.
Role of Integrin-β3 Protein in Macrophage Polarization and Regeneration of Injured Muscle (2012)

Following injury, skeletal muscle achieves repair by a highly coordinated, dynamic process resulting from interplay among numerous inflammatory, growth factors and myogenic regulators. To identify genes involved in muscle regeneration, we used a microarray analysis; there was a significant increase in the expression of a group of integrin genes. To verify these results, we used RT-PCR and Western blotting and found that 12 integrins were up-regulated from 3 h to 15 days following injury. Following muscle injury, integrin-β3 was initially expressed, mainly in macrophages. In integrin-β3 global KO mice, the expression of myogenic genes was decreased and muscle regeneration was impaired, whereas fibrosis was enhanced versus events in wild type (WT) mice. The mechanism for these responses in integrin-β3 KO mice included an infiltration of macrophages that were polarized into the M2 phenotype. These macrophages produced more TGF-β1 and increased TGF-β1/Smad signaling. In vitro, we confirmed that M2 macrophages lacking integrin-β3 produced more TGF-β1. Furthermore, transplantation of bone marrow cells from integrin-β3 KO mice into WT mice led to suppression of the infiltration and accumulation of macrophages into injured muscles. There was also impaired muscle regeneration with an increase in muscle fibrosis. Our results demonstrate that integrin-β3 plays a fundamental role in muscle regeneration through a regulation of macrophage infiltration and polarization leading to suppressed TGF-β1 production. This promotes efficient muscle regeneration. Thus, an improvement in integrin-β3 function could stimulate muscle regeneration.
Improving the stability of an organic battery with an ionic liquid-based polymer electrolyte (2012)

A gel polymer electrolyte based on the ionic liquid {N-butyl-N-methyl-pyrrolidiniumbis(trifluoromethanesulfonyl)imide (Py14TFSI) and lithium bis(trifluoromethanesulfony)imide (LiTFSI)} is shown to prevent the dissolution from an organic electrode. The composite cell shows high energy efficiency although poor cycle stability is exhibited at very high current density (10 C-rate).
Electrically and Mechanically Tunable Electron Spins in Silicon Carbide Color Centers (2014)

The electron spins of semiconductor defects can have complex interactions with their host, particularly in polar materials like SiC where electrical and mechanical variables are intertwined. By combining pulsed spin resonance with ab initio simulations, we show that spin-spin interactions in 4H-SiC neutral divacancies give rise to spin states with a strong Stark effect, sub-10(-6) strain sensitivity, and highly spin-dependent photoluminescence with intensity contrasts of 15%-36%. These results establish SiC color centers as compelling systems for sensing nanoscale electric and strain fields.
Expanding Newborn Screening: Process, Policy, and Priorities (2008)

In the 1960s, newborn screening programs tested for a single very rare but serious disorder. In recent years, thanks to the development of new screening technology, they have expanded into panels of tests; a federally sponsored expert group has recommended that states test for twenty-nine core disorders and twenty-five secondary disorders. By the standards used to decide whether to introduce new preventive health services into clinical use, the decision-making in newborn screening policy has been lax.
History and current status of commercial pulsed laser deposition equipment (2013)

This paper will review the history of the scale-up of the pulsed laser deposition (PLD) process from small areas ∼1 cm2 up to 10 m2 starting in about 1987. It also documents the history of commercialization of PLD as various companies become involved in selling fully integrated laser deposition tools starting in 1989. The paper will highlight the current state of the art of commercial PLD equipment for R&D that is available on the market today from mainstream vendors as well as production-oriented applications directed at piezo-electric materials for microelectromechanical systems and high-temperature superconductors for coated-conductor applications. The paper clearly demonstrates that considerable improvements have been made to scaling this unique physical vapour deposition process to useful substrate sizes, and that commercial deposition equipment is readily available from a variety of vendors to address a wide variety of technologically important thin-film applications.
Asymmetric 1,4‐Addition of Oxazolones to Nitroalkenes by Bifunctional Cinchona Alkaloid Thiourea Organocatalysts: Synthesis of α,α‐Disubstituted α‐Amino Acids (2008)

An easy and simple synthetic approach to optically active alpha,alpha-quaternary alpha-amino acids using asymmetric organocatalysis is presented. The addition of oxazolones to nitroalkenes catalyzed by thiourea cinchona derivatives provides the corresponding alpha,alpha-quaternary alpha-amino acid derivatives with good yields, excellent diastereoselectivities (up to 98 % dr), and from moderate to good enantioselectivities (up to 92 % ee). The reaction can be performed on a large scale. The optically active oxazolone-nitroalkene addition products can be opened in a one-pot reaction to the corresponding ester-amide derivatives. Additional transformations are also presented, such as the synthesis of amino esters, amino acids, and transformation into 3,4-disubstituted pyrrolidin-2-ones.
Synthesis of silver nanoparticles by using tea leaf extract from Camellia Sinensis (2012)

The development of the biological synthesis of nanoparticles using microorganisms or plant extracts plays an important role in the field of nanotechnology as it is environmentally friendly and does not involve any harmful chemicals. In this study, the synthesis of silver nanoparticles using the leaves extract of Chinese tea from Camellia sinensis is reported. The synthesized nanoparticles were characterized using UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopy. The XRD analysis shows that the synthesized silver nanoparticles are of face-centered cubic structure. Well-dispersed silver nanoparticles with an approximate size of 4 nm were observed in the TEM image. The application of the green synthesized nanoparticles can be used in many fields such as cosmetics, foods, and medicine.
The dynostatic algorithm in adult and paediatric respiratory monitoring (2002)

Introduction: Positive pressure ventilation carries a risk of aggravating systemic and lung disease. Monitoring of ventilatory pressure and volume is important to minimize this risk. Conventionally, the pressure of the respiratory system is measured outside the patient. Tra-cheal pressure measurement is one step closer the alveoli and alveolar pressure can be cal-culated by an appropriate algorithm. Volume and pressure may possibly be reduced by using low-density gas mixtures of Helium and Oxygen.Methods: A small fibre optic pressure transducer was evaluated for tracheal pressure mea-surement in paediatric patients and a polyethylene catheter for pressure measurement in adult patients. The dynostatic algorithm (DSA) is based on the equation of motion and the assumption of equal inspiratory and expiratory resistance and compliance at isovolume. The DSA utilises flow and tracheal pressure signals to calculate an alveolar P/V- and an alveolar P/t-curve continuously during ongoing ventilation. The DSA was evaluated clini-cally and in lung models by comparison of calculated and measured alveolar pressure. A Pitot type venturimeter was calibrated for use with low-density gas mixtures; the calibra-tion may be incorporated in the DSA for a preliminary clinical study using He/O2. Results: The fibre optic pressure transducer and polyethylene catheter functioned satisfac-torily in clinical pressure measurement in intubated positive pressure ventilated children and adults, respectively. The tracheal pressure recording provided an improved possibility of detecting peak inspiratory pressure and intrinsic PEEP compared to proximal measure-ment. The DSA reliably calculated alveolar pressure in lung models and provided a number of interesting clinical observations concerning inflection points and overdistension.Conclusions: The Dynostatic Algorithm offers the clinician the option of improved respiratory monitoring in adult and paediatric intensive care patients.