gebhart/patrepeval huggingface dataset:
ChemInform Abstract: Bis(iodozincio)methane — Preparation, Structure, and Reaction (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Polyethylene glycol hydrogel dural sealant may reduce incisional cerebrospinal fluid leak after posterior fossa surgery. (2008)

The application of PEG dural sealant to the closed dural edges may be effective at reducing incisional CSF leak after posterior fossa surgery.
The Chemical Analysis of the Gastric Contents (1897)

Original Article from The New England Journal of Medicine — The Chemical Analysis of the Gastric Contents — Method of Analysis for Use in Clinical Work; Record of the Analyses of the Gastric Contents of Fifty Healthy Individuals
On-line power plant signal validation technique utilizing parity-space representation and analytic redundancy. Final report. [PWR] (1981)

In this study a technique utilizing parity-space representation (an efficient method for finding a consistent subset of redundant measurements) and analytic redundancy (relationships among dissimilar variables) is designed for use in a real-time digital-computer-based system to isolate sensor and non-sensor component failures in the steam generator and feedwater subsystem of a reference nuclear power plant. The developed method differs substantially from global approaches requiring high-dimensional models. By employing previously validated variable estimates and relying upon physically adjacent information for fault isolation, inherently simple models can be used. Thus the developed method is easily segmented in a plant-wide application and is ideally suited to parallel computer processing.
Reactivity of Toluate Dioxygenase with Substituted Benzoates and Dioxygen (2002)

Toluate dioxygenase (TADO) of Pseudomonas putida mt-2 catalyzes the dihydroxylation of a broad range of substituted benzoates. The two components of this enzyme were hyperexpressed and anaerobically purified. Reconstituted TADO had a specific activity of 3.8 U/mg with m-toluate, and each component had a full complement of their respective Fe(2)S(2) centers. Steady-state kinetics data obtained by using an oxygraph assay and by varying the toluate and dioxygen concentrations were analyzed by a compulsory order ternary complex mechanism. TADO had greatest specificity for m-toluate, displaying apparent parameters of KmA = 9 +/- 1 microM, k(cat) = 3.9 +/- 0.2 s(-1), and K(m)O(2) = 16 +/- 2 microM (100 mM sodium phosphate, pH 7.0; 25 degrees C), where K(m)O(2) represents the K(m) for O(2) and KmA represents the K(m) for the aromatic substrate. The enzyme utilized benzoates in the following order of specificity: m-toluate > benzoate approximately 3-chlorobenzoate > p-toluate approximately 4-chlorobenzoate >> o-toluate approximately 2-chlorobenzoate. The transformation of each of the first five compounds was well coupled to O(2) utilization and yielded the corresponding 1,2-cis-dihydrodiol. In contrast, the transformation of ortho-substituted benzoates was poorly coupled to O(2) utilization, with >10 times more O(2) being consumed than benzoate. However, the apparent K(m) of TADO for these benzoates was >100 microM, indicating that they do not effectively inhibit the turnover of good substrates.
Railway scheduling system using repair-based approach (2002)

We propose an approach for railway scheduling based on iterative repair, a technique that starts with a complete but possibly flawed schedule and searches through the space of possible repairs. Based on the observation that the decision of the track assignments of trains would influence the performance of the resulting schedule, we divide the scheduling process into two levels. In the first level, a route preprocessing algorithm based on focal search techniques is developed to find the appropriate track assignments for each train. In the second level, an iterative repair algorithm based on tabu search techniques is applied to repair the flawed schedule. The search is guided by an earliest-conflict-first heuristic that attempts to repair the earliest constraint violation while minimizing the value of objective function. We tested this approach with a randomly generated instance and found that it can work in an effective manner.
Syntheses of Conjugated Polymers Derived from <i>N</i>-Alkyl-2,7-carbazoles (2001)

ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSyntheses of Conjugated Polymers Derived from N-Alkyl-2,7-carbazolesJean-François Morin and Mario LeclercView Author Information Canada Research Chair in Polymer Chemistry, Department of Chemistry, Centre de Recherche en Sciences et Ingénierie des Macromolécules, Université Laval, Quebec City, Quebec, Canada, G1K 7P4 Cite this: Macromolecules 2001, 34, 14, 4680–4682Publication Date (Web):June 6, 2001Publication History Received25 January 2001Revised11 April 2001Published online6 June 2001Published inissue 1 July 2001https://pubs.acs.org/doi/10.1021/ma010152uhttps://doi.org/10.1021/ma010152urapid-communicationACS PublicationsCopyright © 2001 American Chemical SocietyRequest reuse permissionsArticle Views3350Altmetric-Citations242LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Aromatic compounds,Conjugated polymers,Coupling reactions,Materials,Reaction products Get e-Alerts
Garment modeling from fashion drawings and sketches (2009)

Modeling of three-dimensional garments is essential for creating realistic virtual environments and is very helpful for real-life garment design. While fashion drawings are commonly used to convey garment shape, so far little work had been done on using them as inputs to the 3D modeling process. We present a new approach for modeling of garments from fashion drawings. This approach combines an analysis of the drawing aimed to extract major garment features with a novel modeling method that uses the results of this analysis to create realistic looking garments that provide a believable interpretation of the drawing. Our method can be used in a variety of setups, where users can sketch the garment on top of an existing three-dimensional mannequin, draw it free-hand, or even scan pre-existing fashion drawings. We demonstrate the robustness of our method on a variety of inputs and provide a comparison between the results it produces and those created by previous methods.
Important photon Emission Results Reported by Michael Persinger’s Group (2011)

Michael Persinger’s Group at Laurentian University, Canada, have recently reported very important experimental results on photon emissions related to novel macroscopic quantum phenomena and brain functions. One of their findings has been published Brain Research Vol. 1388 (2011), Another is currently in press at Biophyiscal Chemistry. A third finding has been published in NeuroQuantology Vol 9 Issue 4 and a fourth finding is published in the current issue of JCER (Volume 2 Issue 10). Here we briefly describe their findings for the readers of JCER.
Novel technique for maintaining balancedinternal DC linkvoltages in diode clamped five-level inverters (1999)

The paper considers the problem of providing four regulated DC sources for use in a diode clamped five-level inverter. The preferred approach is to provide a single DC link supply and subdivide this into five levels using four series connected capacitor banks which have equally balanced voltages. The paper first considers the use of modified output switching strategies to redistribute energy through the DC link capacitors and maintain correct voltage balance, but concludes that this technique is restricted to outputs with a low modulation. The paper then presents a new technique whereby the voltage across each of these capacitors is maintained constant using a switching circuit: the balancer circuit. The design and control of the balancer circuit is described and its operation is validated on an 11 kW prototype vector controlled induction motor drive. Full four-quadrant operation is demonstrated. This arrangement eliminates the need for complex isolated supply arrangements typically found in multilevel drives. The balancer circuit takes the form of a fourth output leg with the addition of two inductors. This circuit is certainly viable for medium voltage drive applications.
Analysis of Human-Machine Cooperation When Driving with Different Degrees of Haptic Shared Control (2014)

This study investigated human-machine cooperation when driving with different degrees of a shared control system. By means of a direct intervention on the steering wheel, shared control systems partially correct the vehicle's trajectory and, at the same time, provide continuous haptic guidance to the driver. A crucial point is to determine the optimal level of steering assistance for effective cooperation between the two agents. Five system settings were compared with a condition in which no assistance was present. In addition, road visibility was manipulated by means of additional fog or self-controlled visual occlusions. Several performance indicators and subjective assessments were analyzed. The results show that the best repartition of control in terms of cooperation between human and machine can be identified through an analysis of the steering wheel reversal rate, the steering effort and the mean lateral position of the vehicle. The best cooperation was achieved with systems of relatively low-level haptic authority, although more intervention may be preferable in poor visibility conditions. Increasing haptic authority did not yield higher benefits in terms of steering behavior, visual demand or subjective feeling.
Flow Control Devices for SAGD Applications: Lessons Learned, Best Practices, and Suggested Design Improvements (2017)

Abstract An inflow control device (ICD) incorporates either a restrictive or a tortuous flow path to impose an artificial pressure drop across the device. ICDs can offer a solution to the imbalance in heat transfer often seen along the wellbore and promote better conformance in steam chamber growth because they are able to re-distribute energy more evenly during steam-assisted gravity drainage (SAGD) operations. ICDs can be applied in conventional and unconventional resources, but the main focus of this paper is unconventional applications, specifically bitumen production by SAGD. An outcome of efforts in 2008, the ICD’s first application was to mitigate flow conformance issues that were seen along the producer and injector wells; these issues were caused by various geologic and operational factors as well as backflow effects. The effectiveness of that first application has been well recognized in the form of higher bitumen production with better energy efficiency (Stalder, 2012). The conceived benefits of ICDs extend beyond production increases. One of the leading operators in the Athabasca oil deposits, who adopted ICDs in the early stage of their SAGD wells, confirmed ICD applications enabled them to produce bitumen even during the start-up circulation period and to realize a production increase of up to 80% at conversion to SAGD (Morgan, 2016). As more ICD success stories have circulated within the industry, SAGD operators’ interest in ICDs has grown steadily. On the basis of reviews of historical ICD performance, this paper provides lessons learned and suggested design improvements that will hopefully lead to more efficient ICD configurations in SAGD operations.
Picture Quality Prediction Based on a Visual Model (1982)

Distortion measures are developed for the purpose of predicting the subjective quality of moving monochrome television pictures. The need for such measures is particularly recognized in the area of digital picture coding. Subjectively relevant distortion measures that mirror viewers' assessments of picture quality would make the task of designing and optimizing coding schemes considerably easier. The distortion measures are based on a spatiotemporal model of threshold vision that incorporates the filtering and masking processes. The visual filtering is carried out by parallel excitation and inhibition paths, each of which is separately linear but which combine in a nonlinear way to take account of the adaptation with background luminance. The masking is in the form of a point-by-point weighting of the filtered error based on the amount of spatial and temporal activity in the immediate surround. The processed error averaged over the picture is then used as a prediction of picture quality. Three Classes of distortion measure are considered: 1) the raw error measures that have been used in the past; 2) the filtered error measures where the filtering properties of vision are taken into account; and 3) the masked error measures where the masking processes are also included. It is shown that the filtered error measures are better predictors of picture quality than the raw error measures. The masked error measures lead to further improvements but only if local rather than global averaging procedures are used. It is postulated that this is because viewers tend to base their quality ratings on critical areas rather than on the whole picture.
Review of Public Libraries, Archives and Museums: Trends in Collaboration and Cooperation (2010)

A review of: Yarrow, Alexandra, Barbara Clubb and Jennifer-Lynn Draper, Public Libraries, Archives and Museums: Trends in Collaboration and Cooperation (The Hague: International Federation of Library Associations and Institutions Professional Reports, No. 108, 2008), http://archive.ifla.org/VII/s8/pub/Profrep108.pdf
Bayesian Inference for Localization in Cellular Networks (2010)

In this paper, we present a general technique based on Bayesian inference to locate mobiles in cellular networks. We study the problem of localizing users in a cellular network for calls with information regarding only one base station and hence triangulation or trilateration cannot be performed. In our call data records, this happens more than 50% of time. We show how to localize mobiles based on our knowledge of the network layout and how to incorporate additional information such as round-trip-time and signal to noise and interference ratio (SINR) measurements. We study important parameters used in this Bayesian method through mining call data records and matching GPS records and obtain their distribution or typical values. We validate our localization technique in a commercial network with a few thousand emergency calls. The results show that the Bayesian method can reduce the localization error by 20% compared to a blind approach and the accuracy of localization can be further improved by refining the a priori user distribution in the Bayesian technique.
Design and Implementation of Code Optimizations for a Type-Directed Compiler for Standard ML. (1996)

Abstract The trends in software development are towards larger programs, more complex programs, and more use of programs as &amp;quot;component software. &amp;quot; These trends mean that the features of modern programming languages are becoming more important than ever before. Programming languages need to have features such as strong typing, a module system, polymorphism, automatic storage management, and higher-order functions. In short, modern programming languages are becoming more important than ever before.
An SOI based polarization insensitive filter for all-optical clock recovery (2014)

We fabricate and demonstrate a compact polarization insensitive filter for all-optical clock recovery (CR) based on silicon-on-insulator (SOI), which consists of a microring resonator (MRR) and two modified two-dimensional (2D) grating couplers. The distributed Bragg reflectors (DBRs) are introduced to improve the coupling efficiency of the 2D grating coupler. The MRR works as a comb filter for CR, while the 2D grating couplers serve as the polarization diversity unit to achieve a polarization insensitive operation. A subsequent semiconductor optical amplifier (SOA) performs the amplitude equalization. Based on this scheme, a good clock signal with 970 fs timing jitter can be achieved at 44 Gb/s from input signals with arbitrary polarization states.
Motion Compatibility for Indoor Localization (2014)

Indoor localization -- a device's ability to determine its location within an extended indoor environment -- is a fundamental enabling capability for mobile context-aware applications. Many proposed applications assume localization information from GPS, or from WiFi access points. However, GPS fails indoors and in urban canyons, and current WiFi-based methods require an expensive, and manually intensive, mapping, calibration, and configuration process performed by skilled technicians to bring the system online for end users. We describe a method that estimates indoor location with respect to a prior map consisting of a set of 2D floorplans linked through horizontal and vertical adjacencies. Our main contribution is the notion of "path compatibility," in which the sequential output of a classifier of inertial data producing low-level motion estimates (standing still, walking straight, going upstairs, turning left etc.) is examined for agreement with the prior map. Path compatibility is encoded in an HMM-based matching model, from which the method recovers the user s location trajectory from the low-level motion estimates. To recognize user motions, we present a motion labeling algorithm, extracting fine-grained user motions from sensor data of handheld mobile devices. We propose "feature templates," which allows the motion classifier to learn the optimal window size for a specific combination of a motion and a sensor feature function. We show that, using only proprioceptive data of the quality typically available on a modern smartphone, our motion labeling algorithm classifies user motions with 94.5% accuracy, and our trajectory matching algorithm can recover the user's location to within 5 meters on average after one minute of movements from an unknown starting location. Prior information, such as a known starting floor, further decreases the time required to obtain precise location estimate.
High CO2 permeation flux enabled by highly interconnected three-dimensional ionic channels in selective CO2 separation membranes (2012)

Abatement of CO2 emissions from existing fossil-fueled power plants is currently the sole near-term solution to stabilize CO2 concentration in the atmosphere. Separation and capture of CO2 from process streams of these power plants is the first step toward this effort. In this paper, we report a high flux membrane consisting of highly and efficiently interconnected three-dimensional ionic channels prepared from a combined “co-precipitation” and “sacrificial-template” synthesis. The membranes exhibit remarkable CO2 permeation characteristic, achieving a CO2 flux density two orders of magnitude higher than other similar systems reported in the literature. The experimental results also have an excellent agreement with the theoretical predictions. Overall, the demonstrated dual-phase membranes show a great promise for selective pre-combustion CO2 separation.
Attestation in Wireless Sensor Networks (2016)

Attestation is a mechanism used by a trusted entity to validate the software integrity of an untrusted platform. Over the past few years, several attestation techniques have been proposed. While they all use variants of a challenge-response protocol, they make different assumptions about what an attacker can and cannot do. Thus, they propose intrinsically divergent validation approaches. We survey in this article the different approaches to attestation, focusing in particular on those aimed at Wireless Sensor Networks. We discuss the motivations, challenges, assumptions, and attacks of each approach. We then organise them into a taxonomy and discuss the state of the art, carefully analysing the advantages and disadvantages of each proposal. We also point towards the open research problems and give directions on how to address them.
The Marriage of the FeN<sub>4</sub> Moiety and MXene Boosts Oxygen Reduction Catalysis: Fe 3d Electron Delocalization Matters (2018)

Iron-nitrogen-carbon (Fe-N-C) is hitherto considered as one of the most satisfactory alternatives to platinum for the oxygen reduction reaction (ORR). Major efforts currently are devoted to the identification and maximization of carbon-enclosed FeN<sub>4</sub> moieties, which act as catalytically active centers. However, fine-tuning of their intrinsic ORR activity remains a huge challenge. Herein, a twofold activity improvement of pristine Fe-N-C through introducing Ti<sub>3</sub> C<sub>2</sub> T<sub>x</sub> MXene as a support is realized. A series of spectroscopy and magnetic measurements reveal that the marriage of FeN<sub>4</sub> moiety and MXene can induce remarkable Fe 3d electron delocalization and spin-state transition of Fe(II) ions. The lower local electron density and higher spin state of the Fe(II) centers greatly favor the Fe <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow><mml:msub><mml:mi>d</mml:mi> <mml:mrow><mml:msup><mml:mi>z</mml:mi> <mml:mn>2</mml:mn></mml:msup> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> electron transfer, and lead to an easier oxygen adsorption and reduction on active FeN<sub>4</sub> sites, and thus an enhanced ORR activity. The optimized catalyst shows a two- and fivefold higher specific ORR activity than those of pristine catalyst and Pt/C, respectively, even exceeding most Fe-N-C catalysts ever reported. This work opens up a new pathway in the rational design of Fe-N-C catalysts, and reflects the critical influence of Fe 3d electron states in FeN<sub>4</sub> moiety supported on MXene in ORR catalysis.
Impact of shaped lens antennas on MBS systems (2002)

Highly shaped beam lens antennas were adopted on the ACTS SAMBA mobile broadband system trial platform to favor high transmission bit rates with moderate RF power requirement and moderate equalization effort. The description of the antenna system and its radiation characteristics are given together with the analysis of the implications of these antennas on the cell coverage and channel time dispersion.