gebhart/patrepeval huggingface dataset:
Smart Well Completion Optimization in Multilateral Wells (2017)

Abstract The ability of smart well completions (SWCs) to best function as intended in the field, has led to renewed focus on smart well completion optimization opportunities. The action of inflow control valves (ICVs) is key to improved management of flux imbalance and premature production delay of unwanted fluids from contributing laterals of the intelligent wells. Difficulty with the use of ICVs includes the complexity to determine all possible combinations of valve settings (given 11 possible positions per valve on each lateral). Imposing specific wellbore pressure profiles in dual or trilateral well completions, to control production, or achieve pressure responses within ideal electrical submersible pump (ESP) operational ranges for continuous uninterrupted functioning of the smart wells is even more challenging. Real-time data acquired during SWC tests at various combinations of valve positions was modelled to determine contributions from motherbores and/or laterals in 11 smart wells. The ICV positions and surface chokes were controlled, while flow rate, wellhead pressure/temperature, and intake pressure/temperature were measured. From the tests, the optimal settings for individual or commingled flow were determined in real time from the network models (objective functions include minimizing water, maximizing oil, subject to staying within effective ESP intake pressures). Tests showed wells with up to 34% and 57% basic sediment and water (BS&amp;W) from the motherbore and lateral respectively and corresponding normalized rates of 1.539/1.138. Implementing results of the model resulted in a normalized oil gain of 3.800 and 27% BS&amp;W reduction from both laterals. The model yielded the optimization parameters, which resulted in choking back drainage points to achieve the water cut reduction and realize the oil gain. Test data revealed an accuracy of more than 90% match between calculated and measured flow rates of targeted drainage points. The results confirm that modeling ICV completions to determine optimum valve positions and rate targets is possible for an entire SWC or specific laterals.
Covert timing channels codes for communication over interactive traffic (2009)

This paper presents the first practical perfectly-secure steganography codes for covert communication via packet timings across interactive traffic relayed over network queuing systems. It has recently been shown that sparse-graph linear codes followed by shaping techniques, combined with message-passing decoding, can enable practical timing channel codes with low symbol error rates near the information capacity of the famous ldquobits through queuesrdquo channel. Inspired by this new class of codes, we use an alternative shaping technique that employs random dithers and construct provably secure steganographic codes for communication using packet timings in interactive traffic. To validate the perfect secrecy of our steganographic codes, we model interactive traffic as a two-state Markov modulated Poisson process (MMPP) and show its goodness-of-fit.
African languages (2002)

The languages of Africa display an astonishing variety of complex tone systems, and a correspondingly large body of literature has grown up in an attempt to understand them. Together with East Asia, Africa has probably the highest ratio of tonal to non-tonal languages, with tonal languages found in just about every language family with the exception of Semitic and Berber. In particular, the Niger-Congo family, which subsumes most of the sub-Saharan languages, including the Bantu group, is almost entirely tonal (or occasionally accentual). Table 6.1, based largely on Bendor-Samuel 1989, shows the affiliation of the major tonal languages of Africa, including all those discussed in this chapter.
Dynamic Object Manipulation Considering Contact Condition of Robot With Tool (2015)

This study considered the dynamic object manipulation by a spatula fixed to a robot. An analysis on the principles of dynamic movement revealed that the main issue is to satisfy conditions expressed in terms of gravitational, frictional, and inertial forces. This paper clarifies the conditions for achieving dynamic movements and presents a unified algorithm for generating a variety of movements from planning trajectories that satisfy such conditions. The conditions of the dynamic movements are given in the acceleration dimension. The trajectory planned by the proposed method was given to a robot as command values, and a spatula was mounted to a robot arm with 6 degrees of freedom. The experimental results demonstrated that the proposed method based on such principles enables multiple dynamic movements in a unified manner.
Di‐μ‐Chloro‐Bis[(η 5 ‐Pentamethylcyclopentadienyl) Chlororuthenium(III)], [Cp * RuCl 2 ] 2 and Di‐μ‐methoxo‐Bis(η 5 ‐Pentamethylcyclopentadienyl)diruthenium(II), [Cp * RuOMe] 2 (1992)

This chapter contains sections titled: [Cp*RuCl2]2 [Cp*RuOMe]2
Possible Role of IgG4 in Discordant Correlations between Intracutaneous Skin Tests and RAST (1978)

Comparison of intracutaneous skin tests and RAST in 2 groups of patients, one consisting of 16 individuals having multiple allergies to pollen, mold and animal dander and the other of 10 patients allergic to mold only, revealed that skin tests were more sensitive than RAST. Skin reactions of 3+ to 4+ were frequently associated with negative RAST results. This was observed more so in mold-allergic patients. In a few cases (6%) RAST showed 2+ reactions while the skin tests were negative. Leukocytes from allergic individuals who had positive skin tests and negative RAST released a significant amount of histamine upon challenge with specific allergen as well as antihuman IgG4, suggesting that this immunoglobulin is a functional component of some immediate hypersensitivity reactions.
Infocast: A New Paradigm for Collaborative Content Distribution from Roadside Units to Vehicular Networks (2009)

In this paper, we address the problem of distributing a large amount of bulk data to a sparse vehicular network from roadside infostations, using efficient vehicle-to-vehicle collaboration. Due to the highly dynamic nature of the underlying vehicular network topology, we depart from architectures requiring centralized coordination, reliable MAC scheduling, or global network state knowledge, and instead adopt a distributed paradigm with simple protocols. In other words, we investigate the problem of reliable dissemination from multiple sources when each node in the network shares a limited amount of its resources for cooperating with others. By using rateless coding at the Road Side Unit (RSU) and using vehicles as data carriers, we describe an efficient way to achieve reliable dissemination to all nodes (even disconnected clusters in the network). In the nutshell, we explore vehicles as mobile storage devices. We then develop a method to keep the density of the rateless codes packets as a function of distance from the RSU at the desired level set for the target decoding distance. We investigate various tradeoffs involving buffer size, maximum capacity, and the mobility parameter of the vehicles.
Particle emissions from a modern heavy-duty diesel engine as ice-nuclei in immersion freezing mode: an experimental study on fossil and renewable fuels (2021)

Abstract. We studied ice-nucleating abilities of particulate emissions from a modern heavy-duty diesel engine using three different types of fuel. The polydisperse particle emissions were sampled during engine operation and introduced to a continuous-flow diffusion chamber (CFDC) instrument at a constant relative humidity RHwater = 110 %, and temperature was ramped between −43 °C and −32 °C (T-scan). The tested fuels were EN 590 compliant low-sulfur fossil diesel, hydrotreated vegetable oil (HVO) and rapeseed methyl ester (RME), and all were investigated without blending. Sampling was carried out at different stages in the engine exhaust after-treatment system, with and without simulated atmospheric processing using an oxidation flow reactor. In addition to ice-nucleation experiments, we used supportive instrumentation to characterize the emission particles and present six different physical and chemical properties of them. We found that the studied emissions were poor ice-nucleators and substitution of fossil diesel with renewable fuels, using different emission after-treatment systems and photochemical aging of total exhaust had only little effect on their ice-nucleating abilities.
High-Efficiency Driving Cycle Generation Using a Markov Chain Evolution Algorithm (2018)

At present, driving cycles generated by Markov chain (MC) based methods have been used extensively in the evaluation of vehicle fuel and emissions, for designing the size of power components, and the optimization of energy management strategies. To study the adaptability of vehicles to driving cycles, it is necessary to generate representative driving cycles with a large number of vehicles and road parameters to reflect the actual driving environment. However, under this condition, the time efficiency of the MC simulation is very low, which makes it difficult to generate driving cycles with the required representativeness. Combined with random sampling, the evolution mechanism of a genetic algorithm (GA) can achieve this goal more efficiently than conventional random sampling. Therefore, we propose a novel MC evolution (MCE) algorithm that improves the efficiency of the MC by combining stochastic sampling with evolution. Genetic strategies are designed to satisfy the state transition of driving cycles, and the new GA is employed to optimize the stochastic sequences of the MC. Three-parameter (velocity, acceleration, and grade) driving cycles with different lengths are generated using the MCE from collected highway driving data. The validity and feasibility of the proposed method are evaluated by a statistical analysis. A comparison of the MCE with other methods, including the MC stochastic method and a traditional GA, reveals that the proposed method yields driving cycles with remarkably improved representativeness and efficiency.
Abstract IA23: Molecular and clinical impact of APOBEC3B mutagenesis in breast cancer (2013)

Abstract Recent studies have revealed a role for the DNA cytosine deaminase APOBEC3B in breast cancer mutagenesis. First, APOBEC3B mRNA is up-regulated in the majority of primary breast tumors and breast cancer cell lines. Second, endogenous APOBEC3B protein is predominantly nuclear and the only detectable source of DNA C-to-U editing activity in breast cancer cell line extracts. Third, APOBEC3B knockdown causes a corresponding decrease in genomic uracil concentrations, mutation frequencies, and C-to-T mutation levels in breast cancer cell lines. Fourth, the biochemical signature of APOBEC3B is evident in breast cancer mutation spectra. Fifth, breast carcinomas that express high levels of APOBEC3B have twice as many mutations as those expressing low levels. Finally, high levels of APOBEC3B associate with poorer prognostic outcomes including shorter survival durations. All of these data are consistent with a model in which APOBEC3B-catalyzed DNA cytosine deamination provides a chronic source of DNA damage and mutagenesis in breast carcinomas that helps to explain how some tumors evolve rapidly and manifest gross heterogeneity. Citation Format: Reuben S. Harris. Molecular and clinical impact of APOBEC3B mutagenesis in breast cancer. [abstract]. In: Proceedings of the AACR Special Conference on Advances in Breast Cancer Research: Genetics, Biology, and Clinical Applications; Oct 3-6, 2013; San Diego, CA. Philadelphia (PA): AACR; Mol Cancer Res 2013;11(10 Suppl):Abstract nr IA23.
The Sodium-Driven Flagellar Motor Controls Exopolysaccharide Expression in Vibrio cholerae (2004)

Vibrio cholerae causes the life-threatening diarrheal disease cholera. This organism persists in aquatic environments in areas of endemicity, and it is believed that the ability of the bacteria to form biofilms in the environment contributes to their persistence. Expression of an exopolysaccharide (EPS), encoded by two vps gene clusters, is essential for biofilm formation and causes a rugose colonial phenotype. We previously reported that the lack of a flagellum induces V. cholerae EPS expression. To uncover the signaling pathway that links the lack of a flagellum to EPS expression, we introduced into a rugose flaA strain second-site mutations that would cause reversion back to the smooth phenotype. Interestingly, mutation of the genes encoding the sodium-driven motor (mot) in a nonflagellated strain reduces EPS expression, biofilm formation, and vps gene transcription, as does the addition of phenamil, which specifically inhibits the sodium-driven motor. Mutation of vpsR, which encodes a response regulator, also reduces EPS expression, biofilm formation, and vps gene transcription in nonflagellated cells. Complementation of a vpsR strain with a constitutive vpsR allele likely to mimic the phosphorylated state (D59E) restores EPS expression and biofilm formation, while complementation with an allele predicted to remain unphosphorylated (D59A) does not. Our results demonstrate the involvement of the sodium-driven motor and suggest the involvement of phospho-VpsR in the signaling cascade that induces EPS expression. A nonflagellated strain expressing EPS is defective for intestinal colonization in the suckling mouse model of cholera and expresses reduced amounts of cholera toxin and toxin-coregulated pili in vitro. Wild-type levels of virulence factor expression and colonization could be restored by a second mutation within the vps gene cluster that eliminated EPS biosynthesis. These results demonstrate a complex relationship between the flagellum-dependent EPS signaling cascade and virulence.
Hybrid neural-network/HMM approaches to wordspotting (1993)

Two approaches to integrating neural network and hidden Markov model (HMM) algorithms into one hybrid wordspotter are being explored. One approach uses neural network secondary testing to analyze putative hits produced by a high-performance HMM wordspotter. This has provided consistent but small reductions in the number of false alarms required to obtain a given detection rate. In one set of experiments using the NIST Road Rally database, secondary testing reduced the false alarm rate by an average of 16.4%. A second approach uses radial basis function (RBF) neural networks to produce local machine scores for a Viterbi decoder. Network weights and RBF centers are trained at the word level to produce a high score for the correct keyword hits and a low score for false alarms generated by nonkeyword speech. Preliminary experiments using this approach are exploring a constructive approach which adds RBF centers to model nonkeyword near-misses and a cost function which attempts to maximize directly average detection accuracy over a specified range of false alarm rates.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
A Short Biomimetic Approach to the Fully Functionalized Bicyclic Framework of Type A Acylphloroglucinols (2009)

A biomimetic approach toward type A polyprenylated acylphloroglucinols (PPAPs) is described. The method is based on a C-alkylation-cation cyclization reaction sequence, leading to a convenient buildup of molecular complexity, employing the simple and readily available deoxycohumulone and an appropriately functionalized hydroxy halide. Thus, a versatile construction of the fully functionalized bicyclic framework of type A PPAPs (5) was achieved.
Treatment of Pruritus in Cholestatic Jaundice by Bilirubin- and Bile Acid-Adsorbing Resin Column Plasma Perfusion (1992)

The efficacy of plasma perfusion through a new anionic resin, BR-350, for palliation of intractable pruritus secondary to intrahepatic cholestasis was studied in four patients. The treatment was given in a daily 2-h session on 3 consecutive days and was followed by repeated treatment periods each 3rd to 4th week. The patients experienced symptomatic improvement during the first treatment period, and the treatment was well tolerated. Adsorption of bile acids across the filter was efficient and resulted in a bile acid concentration gradient pre- to post-resin of 92%. Thus plasma perfusion through the ion resin BR-350 is an effective and safe treatment for symptomatic relief of intractable pruritus in cholestatic liver disease and may reduce hospitalization time and increase the quality of life.
Nature of the “Extreme Conditions” in Single Sonoluminescing Bubbles (1999)

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionNature of the "Extreme Conditions" in Single Sonoluminescing BubblesFrançoise Lepoint-Mullie, Damien De Pauw, Thierry Lepoint, Philippe Supiot, and Rudi AvniCite this: J. Phys. Chem. A 1999, 103, 17, 3346Publication Date (Web):April 29, 1999Publication History Published online29 April 1999Published inissue 1 April 1999https://pubs.acs.org/doi/10.1021/jp9908395https://doi.org/10.1021/jp9908395correctionACS PublicationsCopyright © 1999 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views237Altmetric-Citations-LEARN 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 PDF (20 KB) Get e-Alertsclose Get e-Alerts
ChemInform Abstract: PREPARATION OF A 4‐MONOKETAL OF JUGLONE METHYL ETHER (1980)

Abstract Aus 1,5‐Dihydroxy‐naph‐ thalin‐monomethylether (I) erhält man bei der Oxidation mit Th‐trinitrat in Gegenwart von Glykol das Chinon‐monoketal (IIb), das zu (IIa) verseift wird.
Design and implementation of a multi winding high frequency transformer for MPSST application (2017)

Development of the new generation of high power and high frequency power electronic switches along with the need for compact controllable converters for utilization of distributed energy resources in the grid, have led to significant developments in the area of solid state transformers in the last years. The design process of a high frequency transformer as the main element in the solid state transformer is illustrated in this article. A multi winding transformer for multiport SST application is designed, studied and built in this research. In a MPSST several windings feed the core. As the result, coupling coefficient between each pair of windings, become an important factor which is studied in this study. Since the transformer is designed for high frequency applications, the power loss in the wire and core of the transformer increases as the result of higher skin effect and eddy current loss in high frequency. Three important factors in the design of HF transformer for MPSST are discussed in the paper. First, four different possible core materials are compared based on their flux density, frequency range, loss and price. Then the cable selection is illustrated and finally, different winding placement and distribution on the same core are suggested and the inductance and coupling coefficient matrices are calculated using ANSYS Maxwell 3D simulation. The transformer is built in the lab and the inductance values matches the expected values from the simulation.
Soil Temperature in a Row Crop with Incomplete Surface Cover (1984)

Abstract A method is presented to predict soil temperature distribution between rows of crops that partially shade the soil surface. The method combines a model for predicting time and location of soil surface shading with a model for two‐dimensional soil heat transfer. The track of shadow model is general, and requires only plant shape parameters, field location coordinates, row spacing, and row direction to predict soil surface shading as a function of time. The soil heat transfer model is an explicit finite difference approximation of the transient conduction equation, allowing for time and space dependence of soil thermal properties. The surface boundary temperatures are computed by partitioning the surface net radiation into the sensible air, latent, and ground heat flux components. Standard meteorological inputs required to compute the energy partitioning are global radiation, air temperature and humidity, and windspeed. Observed and computed temperature distributions show agreement for a 1‐d simulation. To predict surface energy partitioning and soil temperature accurately for longer periods of time, the method must be expanded to account for water transport.
Doping effects on intersubband and interband optical transitions in GaSb-InAs superlattices (1996)

Normal incidence intersubband and interband absorptions of a novel type II GaSb-InAs superlattices can be obtained by utilizing the various doped-type cap and buffer layers. Moreover, the types and intensities of the absorptions could also be modulated by changing doping concentration. The intersubband transition can occur due to the strong mixing of the heavy-hole band and the light-hole band for InAs n-type cap and buffer layers. But the interband transition is a result of coupling between the wave-functions of the first conduction subband and the first heavy-hole subband for GaSb p-type cap and buffer layers. Both the intensities of intersubband can be modulated by changing doping concentration, and the corresponding wavelengths are in the ranges of 3-5 /spl mu/m and 8-14 /spl mu/m, respectively. Hence, it shows the potential application as an infrared photodetector.