gebhart/patrepeval huggingface dataset:
Video stabilization with distortion correction for wide-angle lens dashcam (2016)

Video stabilization is of fundamental importance to provide high-quality video for non-stationary camera. However, conventional video stabilization methods did not consider lens distortion because the inter-frame translation is mostly estimated under the assumption of pure geometrical transform. This paper proposes a video stabilization algorithm which models the image distortion with a division model and estimates the vertical image translation so as to better stabilize consecutive images captured by wide-angle dashcam mounted on a vehicle. Besides, in order to quantitatively assess the stabilization result, several synthetic vibration sequences with associated Ground-Truth (GT) are generated. Using these sequences, we demonstrate that our algorithm outperforms other methods in that the distortion effect resulting from wide-angle lens is also modeled. Moreover, the proposed algorithm could achieve almost equivalent stabilization results from slight to heavy degree of vibration. The proposed datasets and the experimental results for either synthetic or real-driving data are available on the web.
The Use of Time-Domain Techniques for Microwave Transistor s-Parameter Measurements (1977)

The determination of microwave transistor s parameters over a frequency band up to 10 GHz by means of timedomain techniques, involving Fourier analysis and deconvolution of transient response data, is described. Details of the measurement system are presented and advantages of such techniques over conventional network analyzer techniques are discussed. Results obtained for developmental ion-implanted/diffused-silicon bipolar transistors with ft values above 5 GHz are presented.
Improvement of the excitation source in the narrow-band linear prediction vocoder (1985)

The major weakness of the current narrow-band LPC synthesizer lies in the use of a "canned" invariant excitation signal, The use of such an excitation signal is based on three primary assumptions, namely, 1) that the amplitude spectrum of the excitation signal is flat and time invariant, 2) that the phase spectrum of the voiced excitation signal is a time-invariant function of frequency, and 3) that the probability density function of the phase spectrum of the unvoiced excitation signal is also time invariant. This paper critically examines these assumptions and presents modifications which improve the quality of the synthesized speech without requiring the transmission of additional data. Diagnostic acceptability measure (DAM) tests show an increase of up to five points in overall speech quality with the implementation of each of these improvements. These modifications can also improve the speech quality of LPC-based speech synthesizers.
Impact of volatile compounds generated by essential oils on <i>Aspergillus</i> section <i>Flavi</i> growth parameters and aflatoxin accumulation (2009)

Abstract BACKGROUND: The advantage of essential oils is their bioactivity in the vapour phase, a characteristic that makes them attractive as possible fumigants for stored grain protection. In this study the antifungal and antiaflatoxigenic effects of the volatile fractions of five essential oils (EOs) were evaluated by vapour contact on Aspergillus section Flavi isolates. RESULTS: In maize meal extract agar the volatile fractions of Pimpinella anisum L. (anise), Pëumus boldus Mol. (boldus), Hedeoma multiflora Benth. (mountain thyme), Lippia turbinata var. integrifolia (Griseb.) (poleo) and Syzygium aromaticum L. (clove) were able to decrease the growth rate and lag phase of aflatoxigenic isolates. Boldus EO showed the best antifungal effect on Aspergillus section Flavi growth rate. In sterilised maize grains, boldus and poleo EOs showed antifungal effects on growth rate and aflatoxin accumulation. The volatile fraction of boldus EO completely inhibited the growth of isolates at water activity ( a w ) levels of 0.955, 0.930 and 0.900, while poleo EO showed this effect only at the lower a w levels (0.930 and 0.900). All aflatoxigenic isolates showed reduced total aflatoxin accumulation in the presence of boldus EO under all a w conditions. CONCLUSION: These findings clearly indicate that the volatile fraction of boldus EO could be used to control aflatoxigenic fungi in stored maize. Copyright © 2009 Society of Chemical Industry
Surgical staging and cytoreductive surgery of epithelial ovarian cancer (1993)

The potential benefit of secondary cytoreduction will be increasingly important as new salvage therapies become available.
Yb-Doped Alkaline Earth Alumino- and Fluoro-Alumino-Silicate Optical Fiber (2017)

We report on new Yb-doped alkaline earth aluminosilicate and fluoro-aluminosilicate optical fibers. Optical fiber cores based on this glass family offer reduced strength of nonlinear interactions and exhibit favorable Yb3+ spectroscopic properties.
Lumped-element switchable superconducting filters (1999)

A switchable superconducting band-stop filter consisting of a series of LC resonators is described. Each resonator can be switched on or off using a bias current to control the superconducting-to-normal resistance transition. The bandwidth of the filter can thus be varied in steps. In each LC resonator, the magnetic field of the inductor passes through the fingers of the interdigital capacitor, and so a simple model is developed for the combined structure. The LC sections are placed in a coplanar line, but the model can easily be adapted to other types of transmission line. Experimental results are given.
Transition dynamics for multi-pulsing in mode-locked lasers (2009)

We consider experimentally and theoretically a refined parameter space in a laser system near the transition to multi-pulse modelocking. Near the transition, the onset of instability is initiated by a Hopf (periodic) bifurcation. As the cavity energy is increased, the band of unstable, oscillatory modes generates a chaotic behavior between single- and multi-pulse operation. Both theory and experiment are in good qualitative agreement and they suggest that the phenomenon is of a universal nature in mode-locked lasers at the onset of multi-pulsing from N to N +1 pulses per round trip. This is the first theoretical and experimental characterization of the transition behavior, made possible by a highly refined tuning of the gain pump level.
Effects of Tai Chi Self-help Program on Glucose Control, Cardiovascular Risks, and Quality of Life in Type II Diabetic Patients (2007)

Purpose: The purpose of the study was to identify the effects of Tai Chi self-help program on glucose control, cardiovascular risks, and quality of life in patients with type II diabetes. Method: The study subjects were 95 adults with type II diabetes recruited from five primary health centers and one outpatient clinic. The Tai chi self-help program was provided twice a week for 6 months. Outcome measures included blood glucose(HbA1c), cardiovascular risk checklist, and quality of life(SF36). Result: At the completion of 6-month program, HbA1c for Tai Chi group dropped from 6.79 to 6.59 without significant group differences. However, cardiovascular risk scores for Tai Chi group has been significantly reduced compared to the control group. In 6 months, quality of life (SF36) was significantly better for Tai Chi group especially in the areas of physical and social functioning. Conclusion: Tai Chi self-help program applied for type 2 diabetes patients has been partially effective to control cardiovascular risk factors, and some dimensions of quality of life. Tai Chi self-help program can be safely and easily applicable to primary care centers for diabetic patients and other people with chronic disease for their symptom management, and health promotion.
Enol Ethers Are Effective Monomers for Ring-Opening Metathesis Polymerization: Synthesis of Degradable and Depolymerizable Poly(2,3-dihydrofuran) (2019)

Enol ethers are widely used as quenching reagents for Grubbs catalysts. However, we report the surprisingly effective ring-opening metathesis polymerization (ROMP) of cyclic enol ethers, because the resulting electron-rich ruthenium alkylidene complex remains active toward metathesis of electron-rich olefins, despite its deactivation toward hydrocarbon olefins. We demonstrate the first example of ROMP of cyclic enol ethers, using 2,3-dihydrofuran as the monomer, producing a new type of degradable and depolymerizable poly(enol ether). The polymers exhibited perfect regioregularity, and their molecular weights can be regulated by the loading of Grubbs initiators or by the use of a linear vinyl ether as the chain transfer agent. We also developed protocols to deactivate the catalyst following metathesis of enol ethers and cleave the catalyst off the resulting polymers using H<sub>2</sub>O<sub>2</sub> oxidation. The resulting poly(dihydrofuran) can be recycled to monomer via depolymerization with Grubbs catalyst or degraded to small molecules by hydrolysis under acidic conditions. This work opens exciting opportunities for a new class of ROMP monomers that lead to degradable polymers.
Support for vehicle-to-everything services based on LTE (2016)

Vehicular applications and communications technologies are often referred to as vehicle-to-everything (V2X), which is classified into four different types: vehicle-to-vehicle (V2V), vehicle- to-infrastructure (V2I), vehicle-to-network (V2N), and vehicle-to-pedestrian (V2P) [1]. V2X related research projects, field tests, and regulatory work have been promoted in different countries and regions. In May 2015, the Ministry of Industry and Information Technology (MIIT) of China explained national strategies, "Made in China 2025," about intelligent connected vehicles. In 2020 and 2025, the overall technology and key technologies for intelligent driver assistance and automatic driving will be available in China, respectively [2]. V2X solutions are the critical technologies to support the realization of such visions. Although IEEE 802.11p has been selected as the technology for V2X communications in some countries such as the United States and in Europe, the intrinsic characteristics of IEEE 802.11p have confined the technology to support low latency with high reliability [3, 4]. Standardization of Long Term Evolution (LTE)-based V2X is being actively conducted by the Third Generation Partnership Project (3GPP) to provide the solution for V2X communications that benefit from the global deployment and fast commercialization of LTE systems. Because of the wide deployment of LTE networks, V2I and V2N services can be provided with high data rate, comprehensive quality of service (QoS) support, ubiquitous coverage, and high penetration rate [5]. Meanwhile, LTE can be extended to support V2V direct communications based on device-to-device (D2D) sidelink design to satisfy the QoS requirements, such as low latency, high reliability, and high speed in the case of high vehicle density [6].
Overheight Vehicle Collisions with Highway Bridges (2004)

The objective of this study was to assess the magnitude of overheight vehicle collisions with highway bridges that caused structural damage, injuries, and sometimes even fatalities at both the Maryland and the national levels. The seriousness of the collisions was exemplified by a case in 1999 in which a truck hauling an overheight excavator struck and collapsed a pedestrian bridge over the Baltimore Beltway, killing one motorist and injuring three others. Statistics on overheight collisions in Maryland were collected from overheight vehicle detector records, the statewide accident database, and bridge inspection reports. An analysis of the data revealed that the frequency of overheight accidents reported in Maryland increased by 81% between 1995 and 2000. Of the 1,496 bridges susceptible to impact by overheight vehicles statewide, 309 (20%) have been struck, with 58 (4%) having required repairs. No nationwide databases on overheight collisions exist, so a survey was sent to each state to collect national statistics. Of the 29 states responding, 18 (62%) indicated that they consider overheight collisions to be a significant problem, but few were able to provide hard data.
Structure-activity studies of trichothecenes: cytotoxicity of analogs and reaction products derived from T-2 toxin and neosolaniol (1989)

Forty-two analogues and reaction products derived from T-2 toxin or neosolaniol were assayed for their cytotoxicity to cultured mouse lymphoma cells. Structure-activity relationships confirmed the stereospecific nature of the cytotoxic action of T-2. Cytotoxicity was particularly susceptible to changes at C3, C4, C9, and C10 but was relatively unaffected by changes at C8, which appears to represent a region of steric tolerance in the interaction of T-2 with a cellular constituent. The most potent compounds were T-2, diacetoxyscirpenol, and a series of C8 ester analogues 11 and 31-35.
Vision-model-based impairment metric to evaluate blocking artifacts in digital video (2002)

In this paper investigations are conducted to simplify and refine a vision-model-based video quality metric without compromising its prediction accuracy. Unlike other vision-model-based quality metrics, the proposed metric is parameterized using subjective quality assessment data recently provided by the Video Quality Experts Group. The quality metric is able to generate a perceptual distortion map for each and every video frame. A perceptual blocking distortion metric (PBDM) is introduced which utilizes this simplified quality metric. The PBDM is formulated based on the observation that blocking artifacts are noticeable only in certain regions of a picture. A method to segment blocking dominant regions is devised, and perceptual distortions in these regions are summed up to form an objective measure of blocking artifacts. Subjective and objective tests are conducted and the performance of the PBDM is assessed by a number of measures such as the Spearman rank-order correlation, the Pearson correlation, and the average absolute error The results show a strong correlation between the objective blocking ratings and the mean opinion scores on blocking artifacts.
Dynamic &amp; hybrid honeypot model for scalable network monitoring (2014)

Advanced Technology in the area of intrusion detection is the Honeypot technology that unlike common IDS s tends to provide the attacker with all the necessary resources needed for a successful attack. Honeypot provide a platform for studying the methods and tools used by the intruders, thus deriving their value from the unauthorized use of their resource. To provide scalable, early warning and analysis of new Internet threats like worms or automated attacks, we propose globally distributed, hybrid monitoring model that can capture and analyze new vulnerabilities and exploits as they occur. To achieve this, our Model increases the exposure of high-interaction honeypots to these threats by employing low-interaction honeypots as frontend content filters. Host-based techniques capture relevant details such as packet payload of attacks while network monitoring provides wide coverage for quick detection and assessment. To reduce the load of the backends, we filter prevalent content at the network frontends and use a novel handoff mechanism to enable interactions between network and host components.
Comments on "A systematic (16, 8) code for correcting double errors and detecting triple-adjacent errors" [with reply] (1995)

We first present a systematic (16,8) code that can correct double errors and detect all triple-adjacent errors. The restriction of detecting triple-adjacent errors in 8-bit bytes has been removed. We also present a systematic (16, 8) code that can correct all 16 single errors, correct 113 of the 120 double errors, detect seven double errors, correct seven of 14 triple adjacent errors, detect seven triple adjacent errors, and correct all quadrupole adjacent errors.
Neural network based routing in computer communication networks (2002)

A neural-network-based routing algorithm is presented which demonstrates the ability to take into account simultaneously the shortest path and the channel capacity in computer communication networks. A Hopfield-type of neural-network architecture is proposed to provide the necessary connections and weights, and it is considered as a massively parallel distributed processing system with the ability to reconfigure a route through dynamic learning. This provides an optimum transmission path from the source node to the destination node. The traffic conditions measured throughout the system have been investigated. No congestion occurs in this network because it adjusts to the changes in the status of weights and provides a dynamic response according to the input traffic load. Simulation of a ten-node communication network shows not only the efficiency but also the capability of generating a route if broken links occur or the channels are saturated
Influence of GDPR on social networks used by omnichannel contact center (2018)

First part of paper addresses the impact of General Data Protection Regulation (GDPR) on data collection by most popular social networks. GDPR will start to apply on May 25 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> 2018, and it aims to change the way in which organizations treat data protection. Regulation requires organizations, including social networking service providers (SNSP), operating within the EU to know where personal information of their users is located, how can it be used and when does it have to be deleted. The paper clarifies the rights of the users and the obligations of the SNSP. It analyzes 10 most popular social networks and explores what personal information they collect as well as problems related to the application of GDPR. Second part of the paper presents the use of social networks in omnichannel contact center. Omnichannel is a business model which combines various communication channels in order to improve customer experience. Since modern social networks are abundant with personal user information, it is necessary to determine which of them may be collected and used by omnichannel contact center, while respecting the principles of GDPR.
Adaptive Satellite Attitude Control in the Presence of Inertia and CMG Gimbal Friction Uncertainties (2007)

A nonlinear adaptive attitude controller is designed in this paper that compensates for dynamic uncertainties in the spacecraft inertia matrix and unknown dynamic and static friction effects in the control moment gyroscope (CMG) gimbals. Attitude control torques are generated by means of a four single gimbal CMG pyramid cluster. The challenges to develop the adaptive controller are that the control input is multiplied by uncertainties due to dynamic friction effects and is embedded in a discontinuous nonlinearity due to static friction effects. A uniformly ultimately bounded result is proven via Lyapunov analysis for the case in which both static and dynamic gimbal friction is included in the dynamic model, and an extension is provided that illustrates how asymptotic tracking is achieved when only dynamic friction is present in the CMG model.
Writer adaptation for online handwriting recognition (2002)

Writer-adaptation is the process of converting a writer-independent handwriting recognition system into a writer-dependent system. It can greatly increasing recognition accuracy, given adequate writer models. The limited amount of data a writer provides during training constrains the models' complexity. We show how appropriate use of writer-independent models is important for the adaptation. Our approach uses writer-independent writing style models (lexemes) to identify the styles present in a particular writer's training data. These models are then updated using the writer's data. Lexemes in the writer's data for which an inadequate number of training examples is available are replaced with the writer-independent models. We demonstrate the feasibility of this approach on both isolated handwritten character recognition and unconstrained word recognition tasks. Our results show an average reduction in error rate of 16.3 percent for lowercase characters as compared against representing each of the writer's character classes with a single model. In addition, an average error rate reduction of 9.2 percent is shown on handwritten words using only a small amount of data for adaptation.
Hypersensitivity of human lymphocytes to UV-B and solar irradiation. (1993)

T-lymphocytes from three normal human donors, irradiated with broad-spectrum UV-B (peak emission, 312 nm), are 20-fold more sensitive than fibroblasts from four normal donors in a clonogenic assay. We have compared the formation of thymine cyclobutane dimers and pyrimidine-(6-4)-pyrimidone photoproducts following irradiation by UV-C (254 nm) and UV-B and studied killing at doses giving equal dimer formation. UV-B killing of fibroblasts appears to be associated with dipyrimidine photoproduct formation, whereas UV-B killing of lymphocytes is mediated by nondimer damage. Strand breakage following UV-B irradiation measured using the "Comet" assay (single cell gel electrophoresis) reflects this nondimer damage and has kinetics consistent with excisable damage. Lymphocytes from three excision-deficient xeroderma pigmentosum donors show reduced strand breakage and increased killing following UV-B irradiation, compared with lymphocytes from normal donors. We therefore suggest that UV-B kills human lymphocytes by excisable nondimer damage and that xeroderma pigmentosum lymphocytes are defective in its repair. The putative nondimer damage does not appear to be associated with radical attack, and the strand breakage is not a manifestation of apoptosis. A 1-min exposure of human lymphocytes in vitro to natural sunlight is sufficient to produce damage measurable by the Comet assay.
ChemInform Abstract: Asymmetric Hydrogenation of Enamines with a Chiral Titanocene Catalyst. (1994)

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.
Acute Reduction of Blood Pressure by Nitroglycerin Does Not Normalize Large Artery Stiffness in Essential Hypertension (2006)

Stiffness of large elastic arteries is elevated in subjects with hypertension, an effect that could potentially be explained by increased distending pressure. We examined effects of an acute change in blood pressure on carotid-femoral pulse wave velocity and carotid artery distensibility (inversely related to stiffness) in normotensive control subjects (n=20, mean age 42) with mean arterial pressure (MAP) 84+/-1.7 mm Hg (mean+/-SE) and subjects with essential hypertension (n=20, mean age 45, MAP 104+/-2.0 mm Hg). Normotensive subjects received intravenous nitroglycerin (NTG) and angiotensin II to lower/increase blood pressure. Hypertensive subjects received NTG to lower blood pressure. Pulse wave velocity was 24% (95% CI: 12% to 35%) higher and carotid distensibility 47% (95% CI: 32% to 63%) lower in hypertensive subjects compared with controls. In normotensive subjects, acute changes in blood pressure produced expected changes in stiffness. However, in hypertensive subjects, despite reducing MAP by 22 mm Hg to the same level as in normotensive subjects, there was no detectable reduction in arterial stiffness: pulse wave velocity remained 24% (95% CI: 10% to 38%) higher and carotid distensibility 48% (95% CI: 31% to 63%) lower in hypertensive compared with normotensive subjects. Because blood pressure-independent effects of NTG are, if anything, to reduce stiffness, these results indicate that elevated carotid and aortic stiffness in hypertensive subjects is not explained by elevated blood pressure but relates to structural change in the arterial wall.