gebhart/patrepeval huggingface dataset:
Mode Loss Measurement in Few-Mode Fibers With a Microwave Interferometric Technique (2018)

We measure the mode dependent loss (MDL) of a few-mode fiber (FMF) using an improved microwave interferometric technique. A frequency-swept microwave signal modulates a filtered optical incoherent source that is injected into the FMF under test. During propagation, the microwave signal carried by the various modes experiences different losses and delays before interfering at the photodetector. The fiber MDL, between mode groups, is computed from the interference pattern by measuring two different fiber lengths under the same excitation condition. This technique relies on the dominant excitation of the fundamental mode and therefore can measure high values of MDL.
A model of TCP flows dynamics (2006)

The fluid-flow approximation models iuvestigate with much success the dynamics and stability of TCP/RED connections. Their main assumption is that the fluctuations of variables characterizing the behaviour of the couuectioiis are relatively small, that enables the linearization of model and the use of traditional control analysis tools to obtain such measures as Bode gain, phase margins, tracking error or delay margin. The coutribution of this article is twofold: (i) preserving linear fluid-flow model, we propose its extension to the case when a network is composed of wired and wireless part. In this case we consider a variant of TCP algorithiu (TCP-DCR) and fluid-flow differential equations representing the size of congestion window. mean queue at the bottleneck router and loss probability at a RED queue are supplemented with terms representing constant loss probability due to transmission in wireless pait and probability that a fraction of these errors is recovered by a liuk levei mechanism. The decrease of congestion window due to TCP mechanism is delayed to allow the link protocol to deal with the errors. The nonlinear model is linearized and may be used to check the stability of closed-loop control. (ii) We propose to replace the linear fluid flow model of the congested router queue and its AQM politias by more complex one, based on diffusiou approximation. The model will allow us to follow the queue evolution and its dynamics as well as the dynamics of congestion control, also when the transmission is far from the working point, including the case of saturated buffer. It might be especially useful when the counection dynamics is investigated in presence of large uncontrolled flows of UDP.
Rhodium-Catalyzed Arylzincation of Terminal Allenes Providing Allylzinc Reagents and Its Application to Versatile Three-component Coupling Reaction (2010)

Rhodium-catalyzed regioselective arylzincation of terminal allenes affords synthetically useful functionalized allylzinc reagents. The allylzinc reagents react with a variety of electrophiles such as acetonitrile, offering a more versatile three-component coupling reaction.
Viewing model for virtual environment displays (1995)

We present a viewing model that is appropriate for several types of displays used in virtual environment systems, including head-mounted displays and head-tracked stationary displays. The model accounts for arbitrary size, placement, and orientation of the display images, and thus is suitable for various display designs. We provide algorithms for calculating stereoscopic viewing and projection matrices. The tracking algorithm models the position and orientation of the tracker's emitter and the displacement between the sensor and the user's eyes. The algorithms are presented as parameterized homogeneous transforms. We also discuss features that can be used to avoid accommodation/convergence conflicts. The advantages of this viewing model and algorithm are the elimination of possible vertical parallax, an undistorted perception of depth, and reduction of eye fatigue due to excessive parallax. All of these factors contribute to improved comfort and utility for the operator.
Epidermal growth factor receptor (EGFR) serum level may predict response in patients with advanced colorectal cancer (ACC) treated with gefitinib (2007)

4119 Background: EGFR-overexpression reported in colorectal cancer, justifies use of EGFR inhibitors. We conducted a phase II study (ESMO 2005) in ACC with the aim to assess efficacy of gefitinib plus oxaliplatin containing regimen. Main biological objective was to assess serum EGFR extra-cellular binding domain as surrogate marker of tyrosine-kinase inhibition and as predictor of outcome. Methods: 57 patients with EGFR-positive ACC,received gefitinib 250 mg/day combined with simplified FOLFOX-6 for at least 4 cycles,for a maximum of 10 courses.In not progressive disease, gefitinib was continued as maintenance treatment. Tumour assessment by RECIST criteria was performed at baseline and every 4 cycles.Serum EGFR extracellular binding-domain was evaluated by quantitative enzyme-linked immunoadsorbent.Serum EGFR as predictive factor was evaluated both taking into account the basal value only,and the whole EGFR pattern over time.The analyses were performed by logistic and Cox’s regression model with time-dependent covariate respectively;both models included centre, gender,age and site of primary tumours as adjusting factors. Results: Serum samples for EGFR were obtained at baseline and at every assessment.During mono-therapy phase the patients with serum samples decreased. Over treatment,34 patients reported a CR or PR as best objective response (BOR),while 9 patients showed SD or PD. Higher serum EGFR was associated to BOR both at baseline and over time.This result was confirmed by a similar analysis,which considered the whole EGFR profile,instead of the basal value only. Conclusions: Serum EGFR at baseline can be considered a significant predictor for the BOR.This observation is in line with data reported on lung cancer (Gregorc V, 2004).Although the EGFR trend over time seems to confirm the basal difference,this result should be taken with caution,due to the little number of cases reporting EGFR values besides the basal one. [Table: see text] No significant financial relationships to disclose.
P4–265: Mechanism of action of the specific nutrient combination Fortasyn® Connect, which is designed to enhance synapse formation and function in Alzheimer's disease (2013)

Synapse loss has been recognized to be the strongest structural correlate with memory impairment in Alzheimer's disease (AD) and is apparent already early in the disease process. Synapses and neurites consist of neuronal membranes largely composed of phospholipids. Synapse loss and synaptic dysfunction in AD are linked to neuronal membrane loss and altered membrane composition. The formation of new synapses requires the synthesis of new neuronal membranes. Dietary interventions that increase the availability of nutritional compounds, which support neuronal membrane formation and function, potentially counter synaptic loss in AD. In vitro and in vivo studies have demonstrated that supplementation with the phospholipid precursors DHA (docosahexaenoic acid) and/or EPA (eicosapentaenoic acid), UMP (uridine monophosphate), and choline not only increases the synthesis of membrane phospholipids, but also increases neurite outgrowth, levels of specific pre- or post-synaptic proteins, and the number of dendritic spines, all prerequisites for new synapse formation. Other nutrients, i.e. B-vitamins, vitamin C and E, selenium, and dietary phospholipids, were shown to act as cofactors by increasing the availability of membrane precursors or by directly affecting the neuronal membrane or membrane synthesis. Supplementation of combinations of these membrane precursors and cofactors was also shown to modulate membrane-related processes, such as neurotransmission, Aβ-related pathology, and ultimately cognitive performance. Based on these insights, the specific nutrient combination Fortasyn ® Connect (UMP, DHA, EPA, choline, phospholipids, folate, vitamins B 6, B 12, C and E, and selenium) was designed to enhance synapse formation and function in AD patients. Recent preclinical experiments with Fortasyn Connect confirm the hypothesis that nutrients in Fortasyn Connect act in concert to enhance synapse formation and functioning, and to ameliorate cognitive dysfunction. The medical food Souvenaid®, containing Fortasyn Connect, is a nutritional intervention for the management of early AD. A clinical study program is investigating the efficacy of Souvenaid. The clinical studies to date provide evidence that Souvenaid has a beneficial effect on memory function in mild AD and support the hypothesis that enhancing synaptic function in the mild stage of AD may be related to improved memory performance.
Different numerical techniques for the solution of transcendental eigenvalue problem in transmission line bundles (2007)

The problem of a bundled transmission line attached with many spacer dampers is formulated by considering the conductor as a continuous system. The formulation results in a complex transcendental eigenvalue problem (TEVP), which presents several numerical difficulties. Some approaches towards solving the TEVP and their respective difficulties in getting the solutions are discussed in detail. The solution of the TEVP gives the necessary input data for applying the energy balance, which is used in order to obtain the actual vibration amplitudes of the transmission line conductors.
Glass Transition in Confined Geometry (2010)

Extending mode-coupling theory, we elaborate a microscopic theory for the glass transition of liquids confined between two parallel flat hard walls. The theory contains the standard mode-coupling theory equations in bulk and in two dimensions as limiting cases and requires as input solely the equilibrium density profile and the structure factors of the fluid in confinement. We evaluate the phase diagram as a function of the distance of the plates for the case of a hard sphere fluid and obtain an oscillatory behavior of the glass transition line as a result of the structural changes related to layering.
DEVELOPMENT OF DESIGN PROCEDURES FOR ESTIMATING CAPACITY AND DEFORMATION OF PILE GROUPS. VOLUME 2: NUMERICAL ANALYSIS OF VERTICALLY LOADED PILE GROUPS. FINAL REPORT (1988)

A review of present analytical approaches to vertically loaded pile groups reveal them to have either stability problems (FHWA-PILGP2), to be semi-empirical (efficiency approaches), require large amounts of CPU time (3D Finite Element), or unable to model the soil-structure interaction properly (linear elastic). Consequently, a new pile group approach was developed which models the piles with finite elements, the near field soil response through nonlinear springs, and the pile-soil-pile interaction (far field) with Mindlin's equations. The method gives Butterfield and Banerjee's Integral Solution if elastic parameters are used or in the case of nonlinear parameters, the skin friction along the shafts are usually fully mobilized before any appreciable tip resistance develops. An approach is suggested to get material parameters from insitu tests. Finally, the program was used to predict both a single and group response at the FHWA's Hunter's Point, California and Houston, Texas sites. Good results were obtained for both cases using the same soil parameters, obtained from the electric and dynamic cross-hole cones.
Erroneous results from SPICE simulations of switching converters: A dynamical system viewpoint (2006)

The SPICE simulation program is widely used as a brute force simulator for analyzing and designing switching power converters. Results from SPICE are mostly useful, but their integrity is sometimes questionable as erroneous results could be obtained which may not reflect the true behavior of the circuits being simulated. Various parameters in SPICE are crucial in controlling the convergence and accuracy of the simulated results, e.g., relative error tolerance and maximum integration step size. In this paper, we study the system consisting of the SPICE simulation algorithm and the circuit being simulated. Specifically, we describe the generation of flawed solutions in terms of bifurcation of the system under parameter variations. Erroneous results have been collected for different relative error tolerances, maximum integration step sizes, and parasitic inductance and capacitance. These flawed solutions can be analyzed in terms of the manifestation of period-doubling bifurcation and chaotic behavior under variation of selected simulation parameters. This paper provides a systematic approach to rationalizing the behavior of the SPICE simulator, its practical significance being in the identification of the ranges of simulation parameters for which flawed solutions can be produced.
2P1-F17 Extraction of Object Existing Area Using SIFT Feature and Object Relative Restriction and Object Recognition Using AdaBoost Method (2009)

For the purpose of simultaneous localization and mapping (SLAM) of an indoor mobile robot, a method to process only one monocular image (640×480) of the whole view of environment is proposed. This method imitates that a human can grasp momentarily the situation of a room, i.e., the layout of objects/obstacles. It is not required for a robot to move around the room while probing the objects/obstacles by some sensors, which is usually done in SLAM research. The proposed method is concretely organized as follows: 1) narrowing the searched area using invisible floor marks, 2) extracting features based on scale invariant feature transform (SIFT), 3) template matching using SIFT features with assistance of partial templates and spatial relation to the floor, and 4) verification of object category by AdaBoost classifier using Haar-like features based on semantic information on the object shape. Then, a robot builds a highly structured 3D map.
In-vivo measurement of sound-induced motions in the gerbil cochlea (2010)

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Hydrogen Peroxide Solvates of 2,4,6,8,10,12‐Hexanitro‐2,4,6,8,10,12‐hexaazaisowurtzitane (2016)

Abstract Two polymorphic hydrogen peroxide solvates of 2,4,6,8,10,12‐hexanitro‐2,4,6,8,10,12‐hexaazaisowurtzitane (CL‐20; wurtzitane is an alternative name to iceane) were obtained using hydrated α‐CL‐20 as a guide. These novel H 2 O 2 solvates have high crystallographic densities (1.96 and 2.03 g cm −3 , respectively), high predicted detonation velocities/pressures (with one solvate performing better than ϵ‐CL‐20), and a sensitivity similar to that of ϵ‐CL‐20. The use of hydrated materials as a guide will be important in the development of other energetic materials with hydrogen peroxide. These solvates represent an area of energetic materials that has yet to be explored.
Tumor Necrosis Factor-α and Tumor Necrosis Factor Receptors in the Failing Human Heart (1996)

In summary, the results of this study constitute the initial demonstration that TNF receptor proteins are dynamically regulated in patients with advanced congestive heart failure. Moreover, the observation that failing hearts express elevated levels of TNF-alpha suggests that overexpression of this cytokine may be one of several different maladaptive mechanisms responsible for the progressive cardiac decompensation that occurs in advanced heart failure.
A General Approach to Shape Characterization for Biomedical Problems. (2006)

In this paper, we present a general approach to shape characterization and deformation analysis of 2D/3D deformable visual objects. In particular, we define a reference dynamic model, encoding morphological and functional properties of an objects class, capable to analyze different scenarios in heart left ventricle analysis.

The proposed approach is suitable for generalization to the analysis of periodically deforming anatomical structures, where it could provide useful support in medical diagnosis. Preliminary results in heart left ventricle analysis are discussed.
Inter-network interference mitigation in Wireless Body Area Networks using power control games (2010)

In this paper, we propose a non-cooperative power control game to mitigate inter-network interference in Wireless Body Area Networks (WBANs), which use emerging short-range wireless communication technology inside, on or around the human body for healthcare, entertainment and ubiquitous computing purposes. Interference endangers the reliability of WBANs especially in critical medical applications and also leads to more power consumption in very energy-constrained WBANs. Coordinating transmission power levels, we increase the system total throughput in the presence of interference using as little power as possible. We utilize non-linear and adaptive power pricing functions to penalize high power users and increase capacity in better channels. We investigate the Nash equilibrium existence and uniqueness and propose the best response strategy in the game to reach the Nash equilibrium.
FPGA Implementation of an Optimal IGBT Gate Driver Based on Posicast Control (2012)

In this paper, we propose an insulated gate bipolar transistor (IGBT) gate driver that provides an optimal gate signal to manage the IGBT switching mechanism, without the need of a feedback current measurement across the parasitic inductance of the circuit. Our approach is based on the Posicast method, which allows determining an optimal gate signal shape from pulses whose characteristics are determined from the IGBT model. Experimental results demonstrate the effectiveness of the proposed method to minimize electrical switching constraints.
Pneumonia Associated with the TWAR Strain of <i>Chlamydia</i> (1987)

From November 1981 to August 1984, 301 adult patients with community-acquired pneumonia were admitted to the major referral hospital of Nova Scotia. Serologic tests done on these patients included microimmunofluorescence using the TWAR strain of Chlamydia and all Chlamydia trachomatis serovars as antigens. The TWAR strain has been shown to cause mild pneumonia in teenagers and young adults. Of the 301 patients, 18 (6%) had serologic evidence of recent infection with the TWAR organism. Their mean age was 64 years. Pneumonia associated with the presence of acute TWAR antibody had no characteristic clinical or radiographic features when compared with pneumonia without acute chlamydia antibody. Six patients, who all had preexisting serious chronic disease, had severe illness, and 2 died. Both patients who died had complicated hospital courses and other concomitant infections. We conclude that the TWAR organism may cause pneumonia in older adults and persons with chronic diseases that require hospitalization.
Performance issues, downtime recovery and tuning in the Next Linear Collider (NLC) (2002)

Our approach to describe the tuning states of a linear collider by a Markov model looks very promising. In the future, the model presented here should be extended so as to include information about other beam parameters, e.g., emittances, energy and bunch lengths, and it should be further developed to understand the impact of multiple subsystem failures.
Mass Spectrometry in Structural and Stereochemical Problems. CIX.<sup>1</sup> The Nonspecificity of Hydrogen Rearrangements in Aryl Alkyl Ethers<sup>2</sup> (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass Spectrometry in Structural and Stereochemical Problems. CIX.1 The Nonspecificity of Hydrogen Rearrangements in Aryl Alkyl Ethers2J. K. MacLeod and Carl DjerassiCite this: J. Am. Chem. Soc. 1966, 88, 8, 1840–1841Publication Date (Print):April 1, 1966Publication History Published online1 May 2002Published inissue 1 April 1966https://pubs.acs.org/doi/10.1021/ja00960a063https://doi.org/10.1021/ja00960a063research-articleACS PublicationsRequest reuse permissionsArticle Views57Altmetric-Citations38LEARN 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
A 40 Year Hindcast of Wind, Sea Level and Waves in European Waters (2002)

The paper describes the initial efforts in a project whose objective is to obtain a 40-year hindcast of wind, sea level and wave climatology for European waters. The 40-year global atmospheric re-analysis carried out by the National Centre for Environmental Prediction, Washington, USA (NCEP) and the National Centre for Atmospheric Research, Boulder, Colorado, USA (NCAR) will be used as forcing of limited area atmospheric models. The fine grid atmospheric fields will be used to force state-of-the-art wave models (WAM) and sea level models (HAMSOM and TELEMAC) in regional areas around Europe so as to produce climatic information on waves, sea levels, and currents in a very large extend of the European waters, including the Mediterranean, North East Atlantic and North Sea. The available satellite data, including wind, wave and sea-level data, will be collected and will be used to be compared with the hindcast results, so as to yield uncertainty measures related to the data. Statistical analysis of the produced atmospheric, sea level and wave hindcast and remote sensed data will be performed in order to provide information about the climatological trends in the European Waters and Coastal Seas.
Effects of Shape Memory Treatment on Durability of Helical Spring Properties in NiTi Alloy. (1995)

In order to clarify the effects of shape memory treatment on durability of helical spring properties in NiTi alloy, spring force-temperature curves at constant strain were measured before and after thermal cycling test (between 0°C and 90°C) and isothermal retention test (at 120°C, 150°C and 180°C).The results were summarized as follows:(1) Spring force of the R phase (martensite) and transformation temperatures (Ms, Mf) linearly decreased with rise in shape memory treatment temperature before practice of the cycling test and the retention test.(2) The transformation temperatures were unaffected by the cycling test up to 2×104 times in spite of the shape memory treatment temperature and the loading strain (0.8 and 1.0%). Whereas, the spring force of the parent and R phase decreased with rise in thermal cycling, markedly in the case of higher shape memory temperature and larger loading strain.(3) Degradation of the spring force was saturated with thermal cycling of 1×104 times at 1.0% loading strain, but continued to decrease up to thermal cycling of 2×104 times at 0.8% loading strain.(4) Isothermal retention test at 0.6% loading strain leaded to increase in transformation temperatures and degradation of the spring force, effectively depending on retention temperature and time, with the exception that the transformation temperatures were unaffected only by retention temperature of 120°C.