gebhart/patrepeval huggingface dataset:
Application of decolourized and partially purified polygalacturonase and &#945;-amylase in apple juice clarification (2014)

Polygalacturonase and α-amylase play vital role in fruit juice industry. In the present study, polygalacturonase was produced by Aspergillus awamori Nakazawa MTCC 6652 utilizing apple pomace and mosambi orange (Citrus sinensis var mosambi) peels as solid substrate whereas, α-amylase was produced from A. oryzae (IFO-30103) using wheat bran by solid state fermentation (SSF) process. These carbohydrases were decolourized and purified 8.6-fold, 34.8-fold and 3.5-fold, respectively by activated charcoal powder in a single step with 65.1%, 69.8% and 60% recoveries, respectively. Apple juice was clarified by these decolourized and partially purified enzymes. In presence of 1% polygalacturonase from mosambi peels (9.87 U/mL) and 0.4% α-amylase (899 U/mL), maximum clarity (%T(660 nm) = 97.0%) of juice was attained after 2 h of incubation at 50 °C in presence of 10 mM CaCl2. Total phenolic content of juice was reduced by 19.8% after clarification, yet with slightly higher %DPPH radical scavenging property.
Single phase-slip junction site can synchronize a parallel superconducting array of linearly coupled Josephson junctions (2010)

We study an array of inductively coupled Josephson junctions containing a single phase-slip site in the presence of an alternating current. A phase-slip site with reduced critical current can serve as a permanent source of solitary pulses which can synchronize the dynamics of an infinitely large array of junctions. We find that for definite values of parameters, increasing the coupling constant may prevent this synchronization in a system with periodic boundary conditions. This dependence on the boundary condition can be used as a coding mechanism and the information can be retrieved elsewhere in the array.
RecSys Challenge 2015 (2015)

In this paper, we describe the winning approach for the RecSys Challenge 2015. Our key points are (1) two-stage classification, (2) massive usage of categorical features, (3) strong classifiers built by gradient boosting and (4) threshold optimization based directly on the competition score. We describe our approach and discuss how it can be used to build scalable personalization systems.
Einleitung (2003)

Kundenzufriedenheit stellt heute für viele Unternehmen eine zentrale Zielsetzung dar. In den letzten Jahren haben Unternehmen daher beträchtliche Ressourcen in die systematische Messung und Steigerung der Kundenzufriedenheit investiert. Hierbei wurden Kundenbedürfhisse analysiert, Produkte, Dienstleistungen und Prozesse optimiert und Organisationsstrukturen auf den Kunden ausgerichtet.
Automation in the Construction of a 3D-Printed Concrete Wall with the Use of a Lintel Gripper (2020)

Developments in the automation of construction processes, observable in recent years, is focused on speeding up the construction of buildings and structures. Additive manufacturing using concrete mixes are among the most promising technologies in this respect. 3D concrete printing allows the building up of structure by extruding a mix layer by layer. However, the mix initially has low capacity to transfer loads, which can be particularly troublesome in cases of external components that need to be placed on top such as precast lintels or floor beams. This article describes the application of additive manufacturing technology in the fabrication of a building wall model, in which the door opening was finished with automatic lintel installation. The research adjusts the wall design and printing process, accounting for the rheological and mechanical properties of the fresh concrete, as well as design requirements of Eurocode. The article demonstrates that the process can be planned precisely and how the growth of stress in fresh concrete can be simulated, against the strength level developed. The conclusions drawn from this research will be of use in designing larger civil structures. Furthermore, the adverse effects of concrete shrinkage on structures is also presented, together with appropriate methods of control.
Intracameral injection of antigen potentiates the production of antigen-specific T cell proteins in serum after the induction of delayed-type hypersensitivity. (1995)

Serum levels of TNP-specific TABM induced by contact sensitization alone are enhanced fourfold to fivefold when sensitization is preceded by the intracameral, but not the subconjunctival, injection of TNP spleen cells. The authors propose that besides suppression of systemic delayed type hypersensitivity, the intracameral injection of antigen into nonimmune mice may prime an increased production of TABM, which may indicate systemic activation of the immunoregulatory T cell circuit.
Haptics Technologies: Bringing Touch to Multimedia (2011)

The term haptics refers to the science of sensing and manipulation through touch. Multiple disciplines such as biomechanics, psychophysics, robotics, neuroscience, and software engineering converge to support haptics, and generally, haptic research is done by three communities: the robotics community, the human computer interface community, and the virtual reality community. This book is different from any other book that has looked at haptics. The authors treat haptics as a new medium rather than just a domain within one of the above areas. They describe human haptic perception and interfaces and present fundamentals in haptic rendering and modeling in virtual environments. Diverse software architectures for standalone and networked haptic systems are explained, and the authors demonstrate the vast application spectrum of this emerging technology along with its accompanying trends. The primary objective is to provide a comprehensive overview and a practical understanding of haptic technologies. An appreciation of the close relationship between the wide range of disciplines that constitute a haptic system is a key principle towards being able to build successful collaborative haptic environments. Structured as a reference to allow for fast accommodation of the issues concerned, this book is intended for researchers interested in studying touch and force feedback for use in technological multimedia systems in computer science, electrical engineering, or other related disciplines. With its novel approach, it paves the way for exploring research trends and challenges in such fields as interpersonal communication, games, or military applications.
Deep Learning Based Photometric Stereo from Many Images and Under Unknown Illumination (2018)

Shape from X is an interesting area of research in computer vision community. This topic is divided into passive and active methods. Example of passive methods is shape from texture, shape from defocus and shape from the silhouette. For active methods, the important categories are shape from shading and photometric stereo. In shape from shading, the cue for shape reconstruction is shading which is the relation between intensity and shape. In this case, only one image is considered. In photometric stereo, where multiple vantage points exist, 3D reconstruction considers multiple images (at least three). Photometric stereo on its own can be categorised depending on pre-existing information of illumination directions, illumination intensities, Lambertian surfaces or non-Lambertian surfaces. This paper presents a method employing deep learning for photometric stereo where lighting and surface conditions are unknown. The proposed method is applied to a public dataset. Based on the experimental results, this method outperforms currently existing techniques.
Reactions of Sodium with Active Hydrogen (1962)

The chemiluminescent flame produced when sodium vapor diffuses into hydrogen coming from a discharge has been photographed and the ``intensity profile'' has been analyzed in detail according to productemitter flame theory. The analysis shows that sodium is being consumed. Attempts to account for this consumption on the basis of ternary reactions, lead to rate constants 104—105 times larger than those reported in the literature for reactions of this type. It appears that sodium is being consumed by a binary reaction with some species formed in or by the discharge. Since reaction with electronically excited metastable H2* can be excluded, it is proposed that the binary reaction is Na+H2† (v≥6)→NaH+H, where H2† is vibrationally excited hydrogen in its ground electronic state.
Stratified two‐phase flog of molten polymers in circular dies (1977)

Abstract A theoretical study has been carried out on the steady, axisymmetric two‐phase flow of molten polymers in circular dies. For both fluids, the shear rate dependence of the viscosity is described by a power law and the temperature dependence by an exponential function. Taking into account viscous dissipation, a numerical program has been developed to predict the radial position of the interface between the two fluids, the developing temperature and velocity fields, the shear rates, the shear stresses, the pressure drop as well as the field of shear deformation and the residence time distribution for different thermal boundary conditions. The numerical program is applied to the flow of a high‐viscous polymer melt, (high density polyethylene), surrounded by a small annulus of less viscous polymer ni lt, (low density polyethylene). Computed results are shown graphically.
A general joint additive and convolutive bias compensation approach applied to noisy Lombard speech recognition (1998)

A unified approach to the acoustic mismatch problem is proposed. A maximum likelihood state-based additive bias compensation algorithm is developed for the continuous density hidden Markov model (CDHMM). Based on this technique, specific bias models in the mel cepstral and the linear spectral domains are presented. Among these models, a new polynomial trend bias model in the mel cepstral domain is derived, which proved effective for Lombard speech compensation. In addition, a joint estimation algorithm for additive and convolutive bias compensation is proposed. This algorithm is based on applying the expectation maximization (EM) technique in both above-mentioned domains, in conjunction with a parallel model combination (PMC) based transformation. The compensation of the dynamic (difference) coefficients in the proposed framework is also studied. The evaluation data base consists of a 21 confusable word vocabulary uttered by 24 speakers. Three mismatched versions of the data base are considered, i.e., Lombard speech, 15 dB noisy Lombard speech, and 5 dB noisy Lombard speech. The proposed techniques result in 50.9%, 74.6%, and 67.3% reduction in the performance difference between matched and uncompensated word error rates for the three mismatch conditions, respectively. When dynamic coefficients are considered the corresponding reductions are 46.8%, 72.4%, and 70.9%.
Biotechnology: the science and the business (1992)

Section I: Matters of Business: Managing a Biotechnology Business. Financing Biotechnology Companies. Biotechnology Startups. Patents: Paradigms in Collision. Intellectual Property and Technical Know-How Public Perceptions of Biotechnology. The Regulation of Biotechnology in the United States. The Regulation of Biotechnology in Europe. Communication. Section II: Underlying Technologies and Economics: Polymerase Chain Reaction Development of a Novel Technology in a Corporate Environment. Protein Engineering. Fermentation Technology, Bioprocessing, Scale-up and Manufacture. Feedstocks. Process Economics. Section III: Biotechnology and Industry: The Established Industries. Industrial Chemicals: Fermentation and Immobilized Cells. Industrial Enzymes. New Materials. Biosensors.
Partial Purification and Characterization of Feline Gamma-Like Interferon (1986)

Feline interferon (IFN) was produced from spleen cells stimulated by Staphylococcus enterotoxin A (SEA). The IFN was purified by a three-step procedure using controlled pore glass adsorption chromatography, concanavalin A (ConA)-agarose column chromatography and gel filtration. The final product of these procedures which had activity of an IFN appeared as a single peak of activity with molecular weight of approximately 50,000. It was sensitive to acid and heat, suggesting that the isolated material was a gamma IFN. The total recovery of feline gamma IFN was 8.2%. Specific activity was 2.95 X 10(4) unit/micrograms protein and was concentrated 2.8 X 10(4) times. This preparation of purified feline gamma IFN was destroyed completely by 0.1% sodium dodecyl sulfate within 20 min. As an inducer of feline gamma IFN, SEA appeared to produce a more uniform IFN product than did ConA. Further, the presence of 10% ethylene glycol in the sample applied to ConA-agarose column as well as its absence in the elution buffer was effective in reducing contaminating acid- and heat-resistant IFNs in the preparation.
Random Matrix Theory Approach to Chaotic Coherent Perfect Absorbers (2017)

We employ random matrix theory in order to investigate coherent perfect absorption (CPA) in lossy systems with complex internal dynamics. The loss strength γ_{CPA} and energy E_{CPA}, for which a CPA occurs, are expressed in terms of the eigenmodes of the isolated cavity-thus carrying over the information about the chaotic nature of the target-and their coupling to a finite number of scattering channels. Our results are tested against numerical calculations using complex networks of resonators and chaotic graphs as CPA cavities.
Protein kinase D: a family affair (2003)

The protein kinase D family of enzymes consists of three isoforms: PKD1/PKCmu PKD2 and PKD3/PKCnu. They all share a similar architecture with regulatory sub-domains that play specific roles in the activation, translocation and function of the enzymes. The PKD enzymes have recently been implicated in very diverse cellular functions, including Golgi organization and plasma membrane directed transport, metastasis, immune responses, apoptosis and cell proliferation.
Metal ions as allosteric regulators of calmodulin. (1985)

Previously we have shown that the fluorescence of the dihydropyridine calcium antagonist felodipine provides an accurate means of monitoring the formation of an allosterically potentiated conformer of calmodulin (Mills, J. S., and Johnson, J. D., (1985) Biochemistry 24, 4897-4903). Characteristic of this conformer is the abolition of cooperativity among the two felodipine-binding sites on calmodulin and a 20-fold increase in the apparent affinity of calmodulin for felodipine. In the present study, we find that the metal cations La3+, Tb3+, Pb2+, and Cd2+ are all capable of abolishing the cooperativity (Hill coefficient = 2.0) among the two felodipine-binding sites on calmodulin and can increase the apparent affinity of calmodulin for felodipine by approximately 20-fold. These effects are seen either in the presence or absence of calcium and are half-maximal at 8, 12, 22, and 1000 microM, respectively. Zinc and H+ are capable of producing similar potentiations of felodipine binding (half-maximal at 570 microM, and pH 5.8), but only in the presence of calcium. In each case, the calcium-binding sites of calmodulin must be occupied (by calcium, La3+, Tb3+, Pb2+, or by Cd2+) before these metals can bind to sites which are distinct from the calcium-binding sites to produce the active conformer of calmodulin which exhibits enhanced affinity for felodipine. Mercury and copper can compete with these potentiating metal cations on calmodulin and produce an inactivation of this active calmodulin conformer. These studies suggest that some metals including La3+, Tb3+, Pb2+, Cd2+, Zn2+ and protons are capable of binding to a calcium-calmodulin complex and forming an allosterically active species of calmodulin which cannot be maintained by physiological concentrations of calcium ions alone. Mercury and copper, on the other hand, are capable of inactivating this active calmodulin conformer independent of the presence of calcium on calmodulin. These findings are examined in terms of the mechanism of action of calmodulin and its possible role in heavy metal toxicity.
Acute pulmonary embolism advances in treatment. (2008)

Recent advances in interventional cardiology, pharmacotherapeutics and modern surgical management in tertiary cardiac care centers have tremendously improved the present treatment of Pulmonary Embolism (PE). CT pulmonary angiography (CTPA), nuclear lung scan (V/Q scan), D-dimer test and modern echocardiography have revolutionized the diagnostic methodology and risk assessment criteria. Cardiogenic shock or systolic hypotension (BP < 90 mmHg) and presence of right ventricular dysfunction (or failure) are two principal criteria which govern the severity of pulmonary embolism. While all patients of pulmonary embolism require anticoagulation, systemic thrombolytic therapy is the mainstay of initial treatment in massive and submassive pulmonary embolism. When thrombolysis is contraindicated or has failed, urgent surgical embolectomy or catheter embolectomy may be life saving procedures in severe pulmonary embolism.
Cross-layer goodput analysis for rate adaptive IEEE 802.11a WLAN in the generalized Nakagami fading channel (2004)

This paper aims to evaluate the goodput performance of the IEEE 802.11 a wireless local area network (WLAN) from both the media access control (MAC) layer and physical (PHY) layer perspectives. From the physical layer perspective, we analyze the packet error rate performance of the orthogonal frequency division multiplexing (OFDM) based WLANs under the generalized Nakagami fading channel. According to the Chernoff bound analysis in the Nakagami fading channel, we derive the approximate packet error rate for the IEEE 802.11a WLAN with different data rates and fading parameters. Furthermore, we propose an efficient channel driven rate adaptation (CDRA) scheme. Through a PHY/MAC cross-layer analysis, we demonstrate that the goodput of the CDRA scheme indeed approaches to that of the optimal dynamic programming based rate adaptation method, while avoiding the complex calculations in selecting transmission parameters as the optimal method.
Presentació de problemes de física amb Interactive Physics (2007)

En aquest article presento les possibilitats didàctiques del programa Interactive Physics (IP) de cara a presentar problemes de Física en forma de simulacions (“Fisips”). Finalment plantejo alguns interrogants sobre les dificultats per incorporar i estendre l'ús dels Fisips a l'ensenyament de la Física.
Data Web house to support Web intelligence in e-learning environments (2005)

The amazing usage of Internet as a communication channel has changed the very structure of companies activities, being education a clear example of this situation. Though data mining has been successfully used to improve the 1-to-1 relationship in e-commerce sites, when applied to e-learning environments the results are often limited to provide the educator with access summary information or primitive patterns. In any case, information being obtained is not being used pro-actively. For environments to profit from the information obtained it has to be integrated in a global infrastructure. This paper presents the design of a data e-learning Web-house as supporting structure for future e-learning personalized systems.
12.9 A flying-domain DC-DC converter powering a Cortex-M0 processor with 90.8% efficiency (2016)

Modern SoC designs employed in battery-life-constrained mobile applications feature multiple power domains to dynamically scale power-performance trade-offs in response to application demands. Since each power domain requires a DC-DC converter, and since low-power mobile applications are also typically area-constrained, the employed DC-DC voltage regulators must: 1) be fully integrated, 2) support high efficiency across large dynamic current ranges spanning high-power active modes to low-power sleep modes where the overhead of complex control or multi-phasing is not feasible [1], and 3) support high power density to occupy minimal area overhead. Unfortunately, achieving both high efficiency and power density is difficult: integrated magnetic converters have limited efficiency and do not leverage CMOS scaling, while switched-capacitor (SC) converters suffer from fundamental power density-efficiency trade-offs due to ½C(ΔV)2f-based slow-switching-limit (SSL) losses. While recent work has employed high-density capacitors using ferroelectric or deep-trench technologies to achieve both high efficiency and high power density [2,3], such capacitor technologies are not available in all processes, and SSL losses still restrict the power density-efficiency trade-off, even with further scaling. Stacked-domain (SD) converters attempt to address this trade-off by achieving DC-DC conversion via stacked loads [4]; however, efficiency and density of SD converters approach the performance of the underlying charge-balance DC-DC converter required under load mismatch conditions, limiting the benefits of the SD approach for practical loads.
Functional Group Compatible Palladium-Catalyzed Cross-Coupling Reactions between Aryllithium and Aryl Halide Mediated by a Five-Membered Cyclic Silyl Ether (2006)

Abstract A functional group compatible palladium-catalyzed cross-coupling reaction between aryllithiums and aryl halides mediated by a five-membered cyclic silyl ether as a precursor for an activated arylsilane has been developed. The reaction proceeds under mild conditions without the addition of a fluoride salt or a base to activate the silyl reagent.
BilBOWA: Fast Bilingual Distributed Representations without Word Alignments (2014)

We introduce BilBOWA (Bilingual Bag-of-Words without Alignments), a simple and computationally-efficient model for learning bilingual distributed representations of words which can scale to large monolingual datasets and does not require word-aligned parallel training data. Instead it trains directly on monolingual data and extracts a bilingual signal from a smaller set of raw-text sentence-aligned data. This is achieved using a novel sampled bag-of-words cross-lingual objective, which is used to regularize two noise-contrastive language models for efficient cross-lingual feature learning. We show that bilingual embeddings learned using the proposed model outperform state-of-the-art methods on a cross-lingual document classification task as well as a lexical translation task on WMT11 data.
Grasp analysis as linear matrix inequality problems (2000)

Three fundamental problems in the study of grasping and dextrous manipulation with multifingered robotic hands are as follows, a) Given a robotic hand and a grasp characterized by a set of contact points and the associated contact models, determine if the grasp has force closure, b) Given a grasp along with robotic hand kinematic structure and joint effort limit constraints, determine if the fingers are able to apply a specified resultant wrench on the object, c) Compute "optimal" contact forces if the answer to problem b) is affirmative. In this paper, based on an early result by Buss et al., which transforms the nonlinear friction cone constraints into positive definiteness constraints imposed on certainty symmetric matrices, we further cast the friction cone constraints into linear matrix inequalities (LMI) and formulate all three of the problems stated above as a set of convex optimization problems involving LMI. The latter problems have been extensively studied in optimization and control communities. Currently highly efficient algorithms with polynomial time complexity have been developed and made available. We perform numerical studies to show the simplicity and efficiency of the LMI formulation to the three grasp analysis problems.