gebhart/patrepeval huggingface dataset:
Destination-aware non-GPS positioning using predictive contexts (2012)

Location-based Services (LBS) fairly attract people's attention in recent years. In those applications, location is considered to be one of the best indicators for a mobile user. Traditional positioning mechanisms use location sensors to fetch the user location to trigger navigation. However, we propose a new idea to reverse this procedure. We apply navigation to trigger the positioning by the predictive user destination. Once the location sensors can be discarded, the positioning overhead can be significantly reduced. To predict the destination of mobile users, we take advantages of light-weight sensors like an accelerometer, a compass, a digit map and the sequences of cell-tower signal. By constructing a prediction model which is composed of the above user contexts, we can accurately predict the next n-hop destinations and navigate the current position by the predicted routing path. We propose Destination-aware Non-GPS Positioning System (DNPS) to replace traditional GPS in metropolitan, and our experiments show that DNPS can significantly improve battery life by up to 47% with an acceptable precision penalty about 50 meters while compared to existed periodic-GPS mechanism.
High-performance current control techniques for application to multilevel high-power voltage source inverters (1992)

Several high-performance current control techniques are developed for applications to multilevel high-power voltage source inverters (VSIs). The logical sequence of the design choices is described, resulting in a very robust and reliable control system that allows an adequate switching optimization, excellent dynamic responses, and high accuracy in steady-state operation. The advantages of using various accessible DC potentials are fully exploited. The validity of the proposed schemes has been confirmed by digital simulations involving the generation of five-level voltage waveforms; however, the current control strategies developed can easily be extended to any multilevel inverter structure, even in the case of n-level voltage waveforms and three-phase systems.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Engineering strategies to recapitulate epithelial morphogenesis within synthetic three-dimensional extracellular matrix with tunable mechanical properties (2011)

The mechanical properties (e.g. stiffness) of the extracellular matrix (ECM) influence cell fate and tissue morphogenesis and contribute to disease progression. Nevertheless, our understanding of the mechanisms by which ECM rigidity modulates cell behavior and fate remains rudimentary. To address this issue, a number of two and three-dimensional (3D) hydrogel systems have been used to explore the effects of the mechanical properties of the ECM on cell behavior. Unfortunately, many of these systems have limited application because fiber architecture, adhesiveness and/or pore size often change in parallel when gel elasticity is varied. Here we describe the use of ECM-adsorbed, synthetic, self-assembling peptide (SAP) gels that are able to recapitulate normal epithelial acini morphogenesis and gene expression in a 3D context. By exploiting the range of viscoelasticity attainable with these SAP gels, and their ability to recreate native-like ECM fibril topology with minimal variability in ligand density and pore size, we were able to reconstitute normal and tumor-like phenotypes and gene expression patterns in nonmalignant mammary epithelial cells. Accordingly, this SAP hydrogel system presents the first tunable system capable of independently assessing the interplay between ECM stiffness and multi-cellular epithelial phenotype in a 3D context.
Image registration for multi-exposed HDRI and motion deblurring (2009)

In multi-exposure based image fusion task, alignment is an essential prerequisite to prevent ghost artifact after blending. Compared to usual matching problem, registration is more difficult when each image is captured under different photographing conditions. In HDR imaging, we use long and short exposure images, which have different brightness and there exist over/under satuated regions. In motion deblurring problem, we use blurred and noisy image pair and the amount of motion blur varies from one image to another due to the different exposure times. The main difficulty is that luminance levels of the two images are not in linear relationship and we cannot perfectly equalize or normalize the brightness of each image and this leads to unstable and inaccurate alignment results. To solve this problem, we applied probabilistic measure such as mutual information to represent similarity between images after alignment. In this paper, we discribed about the characteristics of multi-exposed input images in the aspect of registration and also analyzed the magnitude of camera hand shake. By exploiting the independence of luminance of mutual information, we proposed a fast and practically useful image registration technique in multiple capturing. Our algorithm can be applied to extreme HDR scenes and motion blurred scenes with over 90% success rate and its simplicity enables to be embedded in digital camera and mobile camera phone. The effectiveness of our registration algorithm is examined by various experiments on real HDR or motion deblurring cases using hand-held camera.
The effect of intraoperative retrobulbar block on anesthetic management of enucleation under general anesthesia. (1991)

This case chronicles the effect of a retrobulbar block on a coincident general anesthetic for enucleation in an elderly man. This ASA II patient had a medical history of insulin-dependent diabetes with few apparent cardiovascular complications and mild chronic obstructive pulmonary disease. Induction of anesthesia was accomplished with small doses of midazolam, droperidol, and alfentanil followed by thiamylal. The patient was intubated and maintained on isoflurane and nitrous oxide. A retrobulbar block was administered according to the surgeon's instructions without immediate, untoward consequences. Within 10 minutes the patient suffered a profound decrease in blood pressure and pulse requiring repeated doses of glycopyrrolate, phenylephrine, and ephedrine to maintain effective perfusion. These effects do not appear to have resulted from direct elicitation of the oculocardiac reflex, but rather from the loss of surgical stimuli from the block that essentially resulted in inadequate sympathetic tone. The author concludes that anesthetists in similar circumstances should anticipate the possibility of hypotension and lessened anesthetic requirements following retrobulbar block when coincident general anesthesia is planned.
Electronic and Algorithmic Trading Technology: The Complete Guide (2007)

and algorithmic trading has become part of a mainstream response to buy-side traders' need to move large blocks of shares with minimum market impact in today's complex institutional trading environment. This book illustrates an overview of key providers in the marketplace. With electronic trading platforms becoming increasingly sophisticated, more cost effective measures handling larger order flow is becoming a reality. The higher reliance on electronic trading has had profound implications for vendors and users of information and trading products. Broker dealers providing solutions through their products are facing changes in their business models such as: relationships with sellside customers, relationships with buyside customers, the importance of broker neutrality, the role of direct market access, and the relationship with prime brokers. Electronic and Algorithmic Trading Technology: The Complete Guide is the ultimate guide to managers, institutional investors, broker dealers, and software vendors to better understand innovative technologies that can cut transaction costs, eliminate human error, boost trading efficiency and supplement productivity. As economic and regulatory pressures are driving financial institutions to seek efficiency gains by improving the quality of software systems, firms are devoting increasing amounts of financial and human capital to maintaining their competitive edge. This book is written to aid the management and development of IT systems for financial institutions. Although the book focuses on the securities industry, its solution framework can be applied to satisfy complex automation requirements within very different sectors of financial services - from payments and cash management, to insurance and securities. Electronic and Algorithmic Trading: The Complete Guide is geared toward all levels of technology, investment management and the financial service professionals responsible for developing and implementing cutting-edge technology. It outlines a complete framework for successfully building a software system that provides the functionalities required by the business model. It is revolutionary as the first guide to cover everything from the technologies to how to evaluate tools to best practices for IT management. This is the first book to address the hot topic of how systems can be designed to maximize the benefits of program and algorithmic trading. It outlines a complete framework for developing a software system that meets the needs of the firm's business model. It provides a robust system for making the build vs. buy decision based on business requirements.
Studies on the biosynthesis of clavulanic acid. I. Incorporation of 13C-labelled precursors. (1978)

The biosynthesis of clavulanic acid was investigated by feeding 13C-labelled precursors to Streptomyces clavuligerus fermentations. The resulting samples of clavulanic acid were isolated as the benzyl ester and were examined by 13C NMR spectroscopy for 13C-enrichment. The results showed that the carbon skeleton of 1, 3-13C2-glycerol was incorporated intact into the three β-lactam carbons of clavulanic acid. Studies with 1-13C-acetate, 2-13C-acetate and 1, 2-13C2-acetate indicated that the remaining five carbons of clavulanic acid were probably derived from α-ketoglutarate. 1-13C-Propionate and 3-13C-propionate were not metabolised via the same route as glycerol, but were probably converted to succinate, via methylmalonyl CoA, and hence via the tricarboxylic acid cycle to the clavulanic acid precursors.
Bonding of Rubber to Carbon Black by Sulfur Vulcanization (1968)

Abstract As an approach toward understanding the interaction of rubber with carbon black, we have studied the chemisorption of a model olefin (2-methyl-2-octene) on carbon black. Some olefin becomes chemisorbed on simply heating these two materials together, and can be distinguished from physically adsorbed material by its resistance to removal by solvents at room temperature. The presence of an MBTS accelerated sulfur curing system causes additional chemisorption. The amount of olefin chemisorbed can also be increased by the use of larger amounts of sulfur but is decreased by an increase in MBTS, owing to competitive chemisorption of the MBTS. Sulfur is also chemisorbed, to a somewhat greater extent than the olefin, but is desorbed more readily than the olefin, suggesting that these two components are chemisorbed separately. The chemisorbed olefin is believed to be highly mobile on the carbon black surface, and indeed its stability is ascribed primarily to a loss of translational entropy associated with the rate-determining step in desorption. The curing system decreases the stability of the chemisorbed olefin, apparently due to the formation of localized bonds which decrease the translational entropy of the olefin.
Application of Quantum Chemical Approximations to Environmental Problems: Prediction of Water Solubility for Nitro Compounds (2009)

Water solubility values for 27 nitro compounds with experimentally measured values were computed using the conductor-like screening model for real solvent (COSMO-RS) based on the density functional theory and COSMO technique. We have found that the accuracy of the COSMO-RS approach for prediction of water solubility of liquid nitro compounds is impressively high (the errors are lower than 0.1 LU). However, for some solid nitro compounds, especially nitramines, there is sufficient disagreement between calculated and experimental values. In order to increase the accuracy of predictions the quantitative structure-property relationship (QSPR) part of the COSMO-RS approach has been modified. The solubility values calculated by the modified COSMO-RS method have shown much better agreement with the experimental values (the mean absolute errors are lower than 0.5 LU). Furthermore, this technique has been used for prediction of water solubility for an expanded set of 23 nitro compounds including nitroaromatic, nitramines, nitroanisoles, nitrogen rich compounds, and some their nitroso and amino derivatives with unknown experimental values. The solubility values predicted using the proposed computational technique could be useful for the determination of the environmental fate of military and industrial wastes and the development of remediation strategies for contaminated soils and waters. This predictive capability is especially important for unstable compounds and for compounds that have yet to be synthesized.
Current Status of Lipid Management of Hypertensive Patients (2003)

Hypertensives, in addition to requiring strict blood pressure control, need lipid management to prevent cardiovascular disease. To assess the current status of lipid management of hypertensives, we reviewed the profiles of 830 hypertensives. The quality of lipid management was assessed using the Japan Atherosclerosis Society (JAS) Guideline for Diagnosis and Treatment of Hyperlipidemia in Japanese Adults announced in 1997. Hyperlipidemia was diagnosed in 45.2% of hypertensives and in 56.6% of patients in category C (a group of patients with coronary heart disease). Lipid-lowering drugs were used in 63.5% of all hypercholesterolemic patients and in 78.1% of category C patients. Statins were administered to more than 80% of hypercholesterolemic patients. Only 39.4% of hypertensives achieved the target total cholesterol level and only a very small percentage (17.1%) of patients in category C reached the target levels. The elderly hypertensives were the single largest group (42.2% of all hypertensives) in this study population, and the target cholesterol level for this group has been elevated from 200 mg/dl to 220 mg/dl in the JAS Guidelines for Diagnosis and Treatment of Atherosclerotic Cardiovascular Diseases announced in 2002 (new guidelines). In conclusion, in hypertensives requiring lipid management, the lipid-lowering approach appeared insufficient, as the target achievement rate was relatively low despite a high treatment rate. This was most marked for patients in category C.
Nonlinear pre-emphasis for improving QAM performance over channels with additive and multiplicative noise (2010)

This paper presents a new approach for improving performance of communication systems immersed in additive and multiplicative noise. Multiplicative noise manifests itself as phase noise and gain noise. Considering modulations with symbols distributed among several magnitudes, the additive noise presents a uniform distribution over the symbols while multiplicative noise increases with symbol magnitude. As a result symbols with a larger magnitude tend to dominate the symbol error rate of the system. We propose to use invertible nonlinear transformations to distort the constellation prior to modulation and invert the distortion in the receiver prior to decision making. The main effect of the transformation is to decrease the contribution of additive noise in the larger-magnitude symbols while increasing it in the low-magnitude symbols. We demonstrate that as a result the symbol error rate distribution with respect to symbol magnitude unifies and the overall symbol error rate decreases. Analysis is carried out for a second order polynomial distortion. Two optimization criteria are proposed: minimizing the symbol error rate and minimizing the error rate variation with respect to symbol magnitude.
A framework for personalized e-catalogs: an integration of XML-based metadata, user models and agents (2005)

Supporting electronic catalogs (e-catalogs) to provide product search services on the Internet is emerging as an important function of electronic brokers. However, the explosive growth of information is creating difficulties for customers searching for information about the goods they desire. In this paper, an integrated framework is proposed to develop personalized e-catalogs. The proposed framework integrates XML-based metadata models, user models and agents. The proposed metadata model has a multi-level architecture that can facilitate resource discovery and format translation, and can flexibly model the definitions of diverse attributes. The proposed user model uses three-level user profiles to model a user's shopping interests into resources, categories and goods. This work integrates the agent technology with the proposed metadata models and user models in order to develop a personalized e-catalog system. With the support of personalized services, the novel e-catalog system allows an integrated product search to be performed effectively.
Synthesis and evaluation of photoluminescent and electrochemical properties of new aromatic polyamides and polyimides with a kink 1,2‐phenylenediamine moiety (2006)

Abstract A series of novel triphenylamine‐containing aromatic polyamides and polyimides having a crank and twisted noncoplanar structures were synthesized in inherent viscosities of 0.14–0.64 dL/g and 0.11–0.67 dL/g, respectively. These polymers had useful levels of thermal stability associated with relatively high glass‐transition temperatures (174–311 °C). They exhibited strong UV–Vis absorption bands at around 300 nm in NMP solutions. The PL spectra of these polymers in NMP solutions (1 × 10 −5 M) showed maximum peaks around 396–479 nm. The hole‐transporting and electrochromic properties were examined by electrochemical and spectroelectrochemical methods. Cyclic voltammetry (CV) of the polymer films cast onto an indium‐tin oxide (ITO)‐coated glass substrate exhibited two reversible oxidation redox couples at potentials of 0.70–1.01 V and 1.10–1.46 V, respectively, vs. Ag/AgCl in acetonitrile solution. The polymer films revealed electrochromic characteristics, with a color change from neutral pale yellowish to green and then to a blue oxidized form at applied potentials ranging from 0.00 to 1.75 V. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 2587–2603, 2006
Comparison of the efficiencies of several natural and synthetic antioxidants in aqueous SDS [sodium dodecyl sulfate] micelle solutions (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the efficiencies of several natural and synthetic antioxidants in aqueous SDS [sodium dodecyl sulfate] micelle solutionsWilliam A. Pryor, Theodore. Strickland, and Daniel F. ChurchCite this: J. Am. Chem. Soc. 1988, 110, 7, 2224–2229Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published inissue 1 March 1988https://pubs.acs.org/doi/10.1021/ja00215a036https://doi.org/10.1021/ja00215a036research-articleACS PublicationsRequest reuse permissionsArticle Views770Altmetric-Citations204LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Reversing the pump dependence of a laser at an exceptional point (2014)

When two resonant modes in a system with gain or loss coalesce in both their resonance position and their width, a so-called exceptional point occurs, which acts as a source of non-trivial physics in a diverse range of systems. Lasers provide a natural setting to study such non-Hermitian degeneracies, as they feature resonant modes and a gain material as their basic constituents. Here we show that exceptional points can be conveniently induced in a photonic molecule laser by a suitable variation of the applied pump. Using a pair of coupled microdisk quantum cascade lasers, we demonstrate that in the vicinity of these exceptional points the coupled laser shows a characteristic reversal of its pump dependence, including a strongly decreasing intensity of the emitted laser light for increasing pump power.
A ‘Gram‐negative‐type’ DNA polymerase III is essential for replication of the linear chromosome of <i>Streptomyces coelicolor</i> A3(2) (1999)

The Streptomyces coelicolor dnaE gene, encoding the catalytic alpha-subunit of DNA polymerase III (pol III) was isolated by genetic complementation of a temperature-sensitive DNA replication mutant, S. coelicolor ts-38. The deduced protein sequence (1179 residues) is highly similar to the Escherichia coli-type pol III alpha-subunit, rather than to the PolC-type alpha-subunit that is known to be essential for replication in the 'low G + C' Gram-positive bacteria such as Bacillus subtilis. The dnaE gene is able to restore replication to a 'slow stop' mutant (ts-38) and a 'fast stop' mutant (ts-114); the dnaE gene of ts-38 carries a single amino acid substitution (Glu-802 to Lys), and the mutation in ts-114 has been mapped between codons 697 and 1062 of dnaE. Mutant ts-38 is considered to be defective in assembly of the multisubunit pol III holoenzyme and, hence, in initiation of replication, whereas ts-114 is defective in chain elongation. This study provides the first evidence that a DnaE-type pol III is essential for replication in a Gram-positive bacterium. In addition, the complementation studies suggest that the C-terminal 117 residues are not essential for DnaE function in S. coelicolor. When integrated at a distant site on the chromosome, a fragment containing the 3' half of dnaE(codons 697-1179) is capable of rescuing ts-38 (but not ts-114) at the restrictive temperature; it was demonstrated that homogenotization was responsible for this phenomenon.