gebhart/patrepeval huggingface dataset:
Dielectric nanoresonator based lossless optical perfect magnetic mirror with near-zero reflection phase (2016)

We report an all-dielectric lossless optical mirror for the realization of controllable reflection phase based on an array of isolated dielectric nanoresonators. This dielectric mirror is comprised of a cross-shaped amorphous silicon nanoresonator array that has been designed to achieve a 99.8% reflectivity and zero reflection phase at the wavelength of 0.99 μm. The measured results from the fabricated sample match the theoretical predictions with 99.5% reflectivity and near-zero degree reflection phase at 1 μm, which is very close to the targeted wavelength. This concept and approach pave the way for synthesizing lossless artificial reflecting electromagnetic boundaries with arbitrary phase response and hold great promise in applications ranging from nanocavities to nanowaveguides and nanoantennas.
Transition-metal methylene complexes. 19. Studies on metal-metal bonds. 7. Crystal and molecular structure of .mu.-methylene-bis[dicarbonyl(.eta.5-methylcyclopentadienyl)manganese](Mn-Mn) (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransition-metal methylene complexes. 19. Studies on metal-metal bonds. 7. Crystal and molecular structure of .mu.-methylene-bis[dicarbonyl(.eta.5-methylcyclopentadienyl)manganese](Mn-Mn)Michael Creswick, Ivan Bernal, Barbara Reiter, and Wolfgang A. HerrmannCite this: Inorg. Chem. 1982, 21, 2, 645–652Publication Date (Print):February 1, 1982Publication History Published online1 May 2002Published inissue 1 February 1982https://pubs.acs.org/doi/10.1021/ic00132a036https://doi.org/10.1021/ic00132a036research-articleACS PublicationsRequest reuse permissionsArticle Views40Altmetric-Citations26LEARN 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 Get e-Alerts
A Multiagent Modeling Environment for Simulating Work Practice in Organizations (2004)

In this paper we position Brahms as a tool for simulating organizational processes. Brahms is a modeling and simulation environment for analyzing human work practice, and for using such models to develop intelligent software agents to support the work practice in organizations. Brahms is the result of more than ten years of research at the Institute for Research on Learning (IRL), NYNEX Science & Technology (the former R&D institute of the Baby Bell telephone company in New York, now Verizon), and for the last six years at NASA Ames Research Center, in the Work Systems Design and Evaluation group, part of the Computational Sciences Division (Code IC). Brahms has been used on more than ten modeling and simulation research projects, and recently has been used as a distributed multiagent development environment for developing work practice support tools for human in-situ science exploration on planetary surfaces, in particular a human mission to Mars. Brahms was originally conceived of as a business process modeling and simulation tool that incorporates the social systems of work, by illuminating how formal process flow descriptions relate to people s actual located activities in the workplace. Our research started in the early nineties as a reaction to experiences with work process modeling and simulation . Although an effective tool for convincing management of the potential cost-savings of the newly designed work processes, the modeling and simulation environment was only able to describe work as a normative workflow. However, the social systems, uncovered in work practices studied by the design team played a significant role in how work actually got done-actual lived work. Multi- tasking, informal assistance and circumstantial work interactions could not easily be represented in a tool with a strict workflow modeling paradigm. In response, we began to develop a tool that would have the benefits of work process modeling and simulation, but be distinctively able to represent the relations of people, locations, systems, artifacts, communication and information content.
Impact of operator volume on overall major adverse cardiac events following direct coronary stent implantation versus stenting after predilatation (2004)

Stenting performed by high-volume operators resulted in a 50% reduction in MACCE as compared with medium-volume physicians, which also had twice as much restenosis when using direct stenting. Hence, the more demanding technique of direct stenting should not be performed by unsupervised operators who have not yet completed their training. Furthermore, prolonged training periods and even more intensive supervision by experienced operators seems mandatory.
TiO—epoxy composite thermistors (1986)

Abstract TiO powder was incorporated into a rigid epoxy matrix to produce composite materials that exhibit unusually large PTC resistivity increases of up to ten orders of magnitude. The composites have a room-temperature resistivity (1–5 ω-cm) that is comparable with commercial carbon-black-loaded polyethylene thermistors.
Active Learning for Feasible Region Discovery (2019)

Often in the design process of an engineer, the design specifications of the system are not completely known initially. However, usually there are some physical constraints which are already known, corresponding to a region of interest in the design space that is called feasible. These constraints often have no analytical form but need to be characterised based on expensive simulations or measurements. Therefore, it is important that the feasible region can be modeled sufficiently accurate using only a limited amount of samples. This can be solved by using active learning techniques that minimize the amount of samples w.r.t. what we try to model. Most active learning strategies focus on classification models or regression models with classification accuracy and regression accuracy in mind respectively. In this work, regression models of the constraints are used, but only the (in) feasibility is of interest. To tackle this problem, an information-theoretic sampling strategy is constructed to discover these regions. The proposed method is then tested on two synthetic examples and one engineering example and proves to outperform the current state-of-the-art.
From "think like a vertex" to "think like a graph" (2013)

To meet the challenge of processing rapidly growing graph and network data created by modern applications, a number of distributed graph processing systems have emerged, such as Pregel and GraphLab. All these systems divide input graphs into partitions, and employ a "think like a vertex" programming model to support iterative graph computation. This vertex-centric model is easy to program and has been proved useful for many graph algorithms. However, this model hides the partitioning information from the users, thus prevents many algorithm-specific optimizations. This often results in longer execution time due to excessive network messages (e.g. in Pregel) or heavy scheduling overhead to ensure data consistency (e.g. in GraphLab). To address this limitation, we propose a new "think like a graph" programming paradigm. Under this graph-centric model, the partition structure is opened up to the users, and can be utilized so that communication within a partition can bypass the heavy message passing or scheduling machinery. We implemented this model in a new system, called Giraph++, based on Apache Giraph, an open source implementation of Pregel. We explore the applicability of the graph-centric model to three categories of graph algorithms, and demonstrate its flexibility and superior performance, especially on well-partitioned data. For example, on a web graph with 118 million vertices and 855 million edges, the graph-centric version of connected component detection algorithm runs 63X faster and uses 204X fewer network messages than its vertex-centric counterpart.
Signal integrity constrained optimization of flexible printed interconnects for mobile devices (2006)

This paper presents a systematic procedure for optimizing the geometry of high-speed data links based on Signal Integrity constraints. The structures under consideration are flexible printed circuits typically found in mobile devices having moving parts. Since the geometry of such interconnects is approximately translation-invariant, we adopt multiconductor transmission line models, characterized by broadband frequency- dependent per-unit-length parameters that implicitly account for losses and dispersion. Each interconnect is characterized by several geometrical and material parameters, which con- stitute the free variables for optimization of the link. Signal integrity constraints such as return loss, impedance, attenuation, or ultimately eye diagram opening are used as goals in a closed-loop optimization process. We employ an efficient model parameterization scheme based on the Generalized Method of Characteristics to reduce the number of RLGC computations and to convert the parameterized model into a SPICE-ready deck for transient simulation and eye diagram generation under realistic loading conditions. Several numerical results illustrate the feasibility of the approach. I. INTRODUCTION
ChemInform Abstract: Multiple‐Equilibria Model Describing the Axial Ligand Dependence of the Dioxygen Affinity of an Iron(II) Lacunar Complex. (1986)

Abstract The dioxygen‐binding behaviour of the title Complex (I) in l‐methylimidazole/acetonitrile is desCribed, where O 2 itself has been used to labilize the axial Chloride, giving the O 2 adduct wi‐th l‐methylimidazole as the axial base.
LOOSELY-SPECIFIED QUERY PROCESSING IN LARGE-SCALE INFORMATION SYSTEMS (1998)

Challenging issues for processing queries specified over large-scale information spaces (e.g., Digital Libraries or the World Wide Web) include the diversity of the information sources in terms of their structures, query interfaces and search capabilities, as well as the dynamics of sources continuously being added, removed or upgraded. In this paper, we give an innovative solution for query planning in such environments. The foundation of our solution is the Dynamic Information Integration Model (DIIM) which supports the specification of not only content but also capabilities of resources without requiring the establishment of a uniform integration schema. Besides the development of the DIIM model, contributions of this paper include: (1) the introduction of the notion of fully specified queries that are semantically equivalent to a loosely-specified query; (2) a translation algorithm of a loosely-specified query into a set of semantically equivalent feasible query plans that are consistent with the binding patterns of query templates of the individual sources (capability descriptions in DIIM) and with interrelationships between informations sources (expressed as join constraints in DIIM); and (3) a search restriction algorithm for optimizing query processing by pruning the search space into the relevant subspace of a query. The plans obtained by the proposed query planning process which is composed of the search restriction and translation algorithms can be shown to correspond to query plans semantically equivalent to the initial loosely-specified input query.
Transient intermediates in the photolysis of iodonium cations (1987)

Pulsed picosecond laser photolysis of the diphenyliodonium cation indicates that excitation of the allowed transition is followed by rapid (ps) deactivation to a homolytically dissociative state, presumably T 1 . Steady-state photolysis yields iodobenzene and biphenyl from the primary radical products. Iodobiphenyl is also observed. We infer in-cage recombination of these radical products, with intervention of a carbocationic intermediate. Laser flash photolysis of diphenyliodonium iodide in its charge transfer band yields an initial transient with a lifetime of ca. 200 ps. A strongly absorbing secondary transient is observed on the nanosecond time scale. Iodobenzene is the exclusive reaction product. We infer that it is not formed directly from the primary photoproduct, but through in-cage recombination of phenyl cation with iodide anion, as in benzenediazonium iodide.
PaperTab (2013)

We present PaperTab, a paper tablet computer that allows physical manipulation of windows embodied in multiple flexible displays. PaperTab offers the benefits of updating electronic information on the fly, while maintaining the haptic/kinesthetic feedback of tangible documents, as each document is a fully functional, paper-like E Ink display. We present windowing techniques for a paper computer that relies on multiple physical windows. Our between-display interactions are based on the proximity of a display to the user. They are categorized into hot zones, for active editing, warm zones for temporary storage, and cold zones for long-term storage. Our within-display interactions use pointing with a display as a focus+context tool.
Cathode materials for lithium ion batteries (2023)

A process of forming a coated cathode active material include preparing a cathode material precursor by co-precipitation; coating the cathode material precursor with an electrochemically inert coating material precursor by precipitation to form a coated cathode material precursor; lithiating the coated cathode material precursor with a lithium source material to form a lithiated coated cathode material precursor; and sintering the lithiated coated cathode material precursor to form a cathode active material coated with an electrochemically inert material.
Impact of ALCVD and PVD Titanium Nitride Deposition on Metal Gate Capacitors (2002)

In this paper it will be shown that the deposition method is an important parameter for the electrical properties of the metal gate. Indeed, ALCVD(Atomic Layer Chemical Vapor Deposition) TiN metal has a 5.3eV workfunction, suitable for PMOS devices. The PVD sputtered (Physical Vapor Deposition) TiN has a lower workfunction around 4.8eV and is mid-gap like. The PVD TiN capacitors have a higher effective oxide charge than the ALCVD capacitors as extracted from capacitance measurements and from workfunction calculations. PVD TiN also exhibits process-induced damage as seen from leakage measurements.
A Digital Segmented Repetitive Control Algorithm (1994)

This paper presents the structure and analysis of the segmented discrete-time repetitive controller. The repetitive controller is designed to reject periodic disturbance and/or track periodic reference signal with known period. Resulted from the Internal Model Principle, the repetitive control law is applied to the entire control path. However, when crucial segments within a control path are of concern, the segmented repetitive control law, which applies control actions only to those segments, can be utilized to save the memory space. It is shown that such a segmented repetitive control system is stable if the original nonsegmented one is stable.
Urban tree coverage associated with reduced mortality among tuberculosis (TB) patients undergoing treatment in California (2016)

Introduction: Trees can mitigate air pollution, but health benefits remain unclear. Methods: We evaluated the effects of urban tree coverage on mortality in a large cohort of Californians with active TB from 2000-2012. We estimated urban tree coverage using 2012 1m resolution color infrared orthoimagery categorized into land cover classes with 94.8% accuracy, linking tree data to 100m buffer zones around patient residential addresses. We obtained patient data from the California TB registry with all-cause mortality during TB treatment as our primary outcome. We used Cox models to determine mortality hazard ratios, adjusting for age, gender, race, ethnicity, foreign birth, region, population density, employment, housing, recreational drug use, and HIV status. In an additional analysis we also controlled for median household income at the census block group level. Results: The cohort included 33,695 TB patients who had a mean age of 47 and were 77% foreign-born, 59% male, 53% unemployed, and 4.9% HIV positive. Pulmonary TB was found in 80% and extrapulmonary TB in 29%. Median tree coverage was 10% (IQR 4.8-14%). Patients were followed for 23,107 person-years with 2,350 deaths during TB treatment for a crude mortality rate of 1,017 deaths per 10,000 person-years. In multivariable Cox analyses, those with highest quintile tree coverage had a 21% reduced mortality risk (HR 0.79, 95%CI 0.68-0.91) compared to those with lowest quintile tree coverage. The decreasing mortality across quintiles was statistically significant (ptrend = 0.003), and adding block group income to the model did not attenuate HRs. Traffic volumes at nearest major roadways were associated with increased mortality during TB treatment (HR 1.28) but tree coverage did not significantly modify that risk (pinteraction = 0.4). Conclusion: Urban tree coverage was associated with decreased mortality during TB treatment even after adjusting for multiple factors. Mechanisms for this association are not clear.
Traumatic Brain Injury, Shell Shock, and Posttraumatic Stress Disorder in the Military—Past, Present, and Future (2012)

With preferential use of high explosives in modern warfare, traumatic brain injury (TBI) has become a common injury for troops. Most TBIs are classified as "mild," although military personnel with these injuries can have persistent symptoms such as headache, memory impairment, and behavioral changes. During World War I, soldiers in the trenches, undergoing unrelenting artillery bombardment, suffered from similar symptoms, designated at the time as "shell shock." Dr Frederick Mott proposed studying the brains of deceased soldiers to elucidate the neuropathology of this clinical entity. Subsequent to a British government enquiry after World War I, the term "shell shock" was banned and further investigation into a possible organic cause for these symptoms was discontinued. Nevertheless, similar clinical entities, such as combat or battle fatigue and posttraumatic stress disorder, continue to be encountered by combatants in subsequent military conflicts. To this day, there exists a paucity of neuropathology studies investigating the effects of high explosives on the human brain. By analogy, studies have recently revealed that athletes with repeated head trauma can develop a neurodegenerative disease, chronic traumatic encephalopathy, who present with similar clinical features. Given current circumstance, we propose completing the work envisioned by Dr Mott almost 100 years ago.
Maternal and Fetal Outcomes in Systemic Lupus Erythematosus Pregnancies (2020)

Although the majority had quiescent SLE disease activity at baseline, SLE pregnancies were associated with high rates of adverse fetal and maternal outcomes.
Passive acoustic mapping using optimal beamforming for real-time monitoring of ultrasound therapy (2013)

In ultrasound therapy, passive acoustic mapping (PAM) has been shown to be an effective method for imaging the acoustic emissions generated during treatment providing the potential for real-time therapy monitoring. In both high intensity ultrasound (HIFU) ablative surgery and targeted drug delivery, imaging artefacts at higher amplitude exposure conditions have been observed which make the localization and dosimetry of therapeutically relevant cavitation activity a challenge. Due to these artefacts, correlating drug release or lesion volumes to the PAMs is hindered for many exposures. It is proposed that incorporating optimal beamforming techniques into the PAM framework can reduce and remove these artefacts allowing determination of the extent of cavitation activity during ultrasound therapy. Additionally, optimal beaforming is found to yield improved resolution, good interference suppression, and robustness against steering vector errors. A description of the origin of the artefacts as well as reduction of them by implementing optimal beamforming within PAM will be demonstrated in the context of targeted drug delivery.
High-Resolution Anamorphic SPECT Imaging (2014)

We have developed a gamma-ray imaging system that combines a high-resolution silicon detector with two sets of movable, half-keel-edged copper-tungsten blades configured as crossed slits. These apertures can be positioned independently between the object and detector, producing an anamorphic image in which the axial and transaxial magnifications are not constrained to be equal. The detector is a 60 mm × 60 mm, one-millimeter-thick, one-megapixel silicon double-sided strip detector with a strip pitch of 59 <i>μ</i>m. The flexible nature of this system allows the application of adaptive imaging techniques. We present system details; calibration, acquisition, and reconstruction methods; and imaging results.
Subband Coding Of Cyclostationary Signals With Overdecimated Filter Banks (2002)

Publication in the conference proceedings of EUSIPCO, Toulouse, France, 2002
Gonadotropin-secreting renal carcinoma (1974)

Tumors of the kidney are known to cause an impressive array of extrarenal manifestations. A patient with a primary malignant renal tumor associated with the production of chorionic gonadotropin (hCG), placental lactogen, and placental alkaline phosphatase is described. The gonadotropic hormone was identified as hCG by a recently developed radioimmunoassay that distinguishes hCG from pituitary luteinizing hormone. This report establishes another humoral syndrome to be considered in association with renal tumors.
Analysis on Calculated Reactivity Error Caused by Inaccuracy of Sampling Intervals (2000)

Recently personal computers are widely used in various instrumentation systems. However some operating system does not have enough accuracy for controlling timer. When there are deviations between the absolute time of the natural phenomena and the time controlled by the operating system, error might be introduced. In a digital reactivity meter, inverse kinetic equations are solved for reactivity. When the sampling interval deviates from the intended interval, the calculated reactivity includes some errors. From this point of view we evaluated errors introduced in the reactivity calculation by a digital reactivity meter. It is found that the error characteristics are different with the added reactivity shape such as constant, sinusoidal, saw tooth shape or ramp. In this paper the results of quantitative error evaluations and some counter measures are discussed.