gebhart/patrepeval huggingface dataset:
Reversibility and Growth Behavior of Surface Oxide Films at Ruthenium Electrodes (1978)

Experiments are described in which the nature of surface oxidation processes at Ru electrodes are investigated and compared with those of other noble metals. Surface oxidation of Ru is much more irreversible than at Pt, Au, or Rh and the oxide formed in sweeps taken to 1.4V can only be reduced in the H region, usually with some coevolution of . However, surface oxidation already begins at potentials in, or close to, the H region; this behavior is somewhat similar to that of Pt in alkaline solutions. Upon repeated cycling into the oxide region up to , a new state of the oxidized Ru surface is generated which exhibits remarkable reversibility of the i‐V profile in anodic and cathodic sweeps taken to any potential in the range 1.4V. This effect is associated with a reversible redox process in the oxide film, probably between Ru(IV) and Ru(III), but reduction back to the metallic surface does not occur as it does in the initial sweeps. The behavior is somewhat similar to that previously observed with Ir. Time‐dependent growth of the oxide film at Ru is observed, as at other noble metals, and the direct logarithmic law applies. Similarities to the surface oxidation behavior of other noble metals, especially iridium, are pointed out and depend on anion adsorption.
The Infinite Partially Observable Markov Decision Process (2009)

The Partially Observable Markov Decision Process (POMDP) framework has proven useful in planning domains where agents must balance actions that pro-vide knowledge and actions that provide reward. Unfortunately, most POMDPs are complex structures with a large number of parameters. In many real-world problems, both the structure and the parameters are difficult to specify from do-main knowledge alone. Recent work in Bayesian reinforcement learning has made headway in learning POMDP models; however, this work has largely focused on learning the parameters of the POMDP model. We define an infinite POMDP (iPOMDP) model that does not require knowledge of the size of the state space; instead, it assumes that the number of visited states will grow as the agent explores its world and only models visited states explicitly. We demonstrate the iPOMDP on several standard problems. 1
HPM detection system for mobile and stationary use (2022)

The growing threat posed by high-power microwaves (HPM) also underlines the importance of means to detect high-strength electromagnetic fields. The Fraunhofer Institute for Technological Trend Analysis (INT) has been conducting research of its own into HPM detection and has developed a demonstrator for an HPM detection system for mobile and stationary use.
Efficient Decision Tree Construction for Classifying Numerical Data (2009)

Many organizations today have very large databases which grow at very fast rate. Efficient mining techniques are necessory to extract useful information from them. Performing classification on data streams with traditional classification algorithm based on decision tree has relatively poor efficiency in time and space. We made an attempt to create a model which will improve accuracy of classifier. The efficient decision tree construction algorithm uses Hoeffding bound along with information gain to select split point. Since it selects attributes randomly construction of tree is efficient hence it improves accuracy of classifier. Time required for classification is also improved for moderate datasets.
Chromatin-specific regulation of LEF-1–β-catenin transcription activation and inhibition in vitro (2001)

Transcriptional activation of Wnt/Wg-responsive genes requires the stabilization and nuclear accumulation of beta-catenin, a dedicated coactivator of LEF/TCF enhancer-binding proteins. Here we report that recombinant beta-catenin strongly enhances binding and transactivation by LEF-1 on chromatin templates in vitro. Interestingly, different LEF-1 isoforms vary in their ability to bind nucleosomal templates in the absence of beta-catenin, owing to N-terminal residues that repress binding to chromatin, but not nonchromatin, templates. Transcriptional activation in vitro requires both the armadillo (ARM) repeats and the C terminus of beta-catenin, whereas the phosphorylated N terminus is inhibitory to transcription. A fragment spanning the C terminus (CT) and ARM repeats 11 and 12 (CT-ARM), but not the CT alone, functions as a dominant negative inhibitor of LEF-1-beta-cat activity in vitro and can block ATP-dependent binding of the complex to chromatin. LEF-1-beta-cat transactivation in vitro was also repressed by inhibitor of beta-catenin and Tcf-4 (ICAT), a physiological inhibitor of Wnt/Wg signaling that interacts with ARM repeats 11 and 12, and by the nonsteroidal anti-inflammatory compound, sulindac. None of these transcription inhibitors (CT-ARM, ICAT, or sulindac) could disrupt the LEF-1-beta-cat complex after it was stably bound to chromatin. We conclude that the CT-ARM region of beta-catenin functions as a chromatin-specific activation domain, and that several inhibitors of the Wnt/Wg pathway directly modulate LEF-1-beta-cat activity on chromatin.
Estimation of sinoaortic baroreceptor heart rate reflex sensitivity and latency in man: a new microcomputer assisted method of analysis (1986)

A new method for analysing baroreflex sensitivity has been developed. It obviates the mathematical bias inherent in earlier methods and in addition provides a direct measurement of reflex latency. Sensitivity results obtained using this method in 25 patients with a wide range of ages and resting blood pressures were similar to, but consistently lower than, those achieved with the Oxford method. Baroreflex latency results ranged from 650 to 2900 ms (mean(SD) 1084(427) ms) and were reproducible within individuals. Sensitivity results were inversely related to age and resting systolic blood pressure. Reflex latency was not related to these variables or to resting heart rate or reflex sensitivity. This method was able to identify inadequate starting data and greatly reduced the analysis time.
High Fatality Rate of Epstein-Barr Virus-Associated Lymphoproliferative Disorder Occurring after Bone Marrow Transplantation with Rabbit Antithymocyte Globulin Conditioning Regimens (2005)

Epstein-Barr virus (EBV)-associated lymphoproliferative disorder (EBV-LPD) following bone marrow transplantation can be fatal. The major risk factors for the development of EBV-LPD are ex vivo T-cell depletion or in vivo T-cell depletion with either antithymocyte globulin (ATG) or monoclonal anti-T-cell antibodies. Between March 1999 and January 2001, a total of 23 transplants with ATG of equine source (20 transplants) and ATG of rabbit source (3 transplants) used as part of the preparatory regimen were performed at the Barbara Ann Karmanos Cancer Institute in Detroit, Mich. The three patients who received rabbit ATG developed EBV-LPD between 60 and 90 days following bone marrow transplantation. However, there were no cases of EBV-LPD in the equine group. Treatment given in these cases consisted of tapering immunosuppression, antiviral therapy, unprocessed donor lymphocyte infusion, mobilized peripheral blood progenitor cell rescue infusion (one patient), and chemotherapy (one patient). All three patients died of complications from EBV-LPD. The association of rabbit ATG with the development of EBV-LPD suggests that patients receiving rabbit ATG as part of their preparatory regimens require close monitoring of the EBV viral load and possible early intervention with antiviral therapy.
RoPAD: Robust Presentation Attack Detection through Unsupervised Adversarial Invariance (2019)

For enterprise, personal and societal applications, there is now an increasing demand for automated authentication of identity from images using computer vision. However, current authentication technologies are still vulnerable to presentation attacks. We present RoPAD, an end-to-end deep learning model for presentation attack detection that employs unsupervised adversarial invariance to ignore visual distractors in images for increased robustness and reduced overfitting. Experiments show that the proposed framework exhibits state-of-the-art performance on presentation attack detection on several benchmark datasets.
Plasma Desphospho-Uncarboxylated Matrix Gla Protein as a Marker of Kidney Damage and Cardiovascular Risk in Advanced Stage of Chronic Kidney Disease (2016)

High dp-ucMGP level, reflecting a poor vitamin K status seems to be associated with kidney damage and may be also a marker of cardiovascular risk in CKD patients. Supplementation with vitamin K2 may improve the carboxylation status of MGP.
Deconstructing Cross-Entropy for Probabilistic Binary Classifiers (2018)

In this work, we analyze the cross-entropy function, widely used in classifiers both as a performance measure and as an optimization objective. We contextualize cross-entropy in the light of Bayesian decision theory, the formal probabilistic framework for making decisions, and we thoroughly analyze its motivation, meaning and interpretation from an information-theoretical point of view. In this sense, this article presents several contributions: First, we explicitly analyze the contribution to cross-entropy of (i) prior knowledge; and (ii) the value of the features in the form of a likelihood ratio. Second, we introduce a decomposition of cross-entropy into two components: discrimination and calibration. This decomposition enables the measurement of different performance aspects of a classifier in a more precise way; and justifies previously reported strategies to obtain reliable probabilities by means of the calibration of the output of a discriminating classifier. Third, we give different information-theoretical interpretations of cross-entropy, which can be useful in different application scenarios, and which are related to the concept of reference probabilities. Fourth, we present an analysis tool, the Empirical Cross-Entropy (ECE) plot, a compact representation of cross-entropy and its aforementioned decomposition. We show the power of ECE plots, as compared to other classical performance representations, in two diverse experimental examples: a speaker verification system, and a forensic case where some glass findings are present.
A 76&#x2013;84 GHz 16-element phased array receiver with a chip-level built-in-self-test system (2012)

A 16-element phased array receiver with built-in-self test (BIST) is demonstrated at 76-84 GHz. The BIST technique employs a miniature capacitive coupler located at the input port of each phased-array channel, and uses the receiver I/Q down-converter to measure the amplitude and phase of each channel. This allows for measuring the response of individual channels if one channel is turned on at a time, and an on-chip array factor if several channels are turned on and the phase between them is varied. BIST measurements done at 76-84 GHz agree very well with S-parameter measurements with a matched load and an open circuit load at each port, and show that this technique can be used to greatly lower the testing cost and improve the self-calibration of mm-wave phased-array RFICs.
Image quality and image resolution (2013)

13 years after the introduction of the first digital airborne mapping camera in the ISPRS conference 2000 in Amsterdam, several digital cameras with more than 100 MPixels per image have been made available. They are now well established in the market and have replaced the analogue mapping cameras. A general improvement in image quality accompanied the digital camera development. The signal-to-noise ratio and the dynamic range are significantly better than with the analogue cameras. In addition, digital cameras can be spectrally and radiometrically calibrated. The use of these cameras required a rethinking in many places. In the recent years, some activities took place that will lead to a better understanding of the cameras and the data produced by these cameras. Several projects, like the projects of the German Society for Photogrammetry, Remote Sensing and Geoinformation (DGPF) or EuroSDR (European Spatial Data Research), were conducted to test and compare the performance of different cameras. This paper will give an overview of standards and alternative approaches in image quality criteria's, and the derivation and use of these parameters.
Adaptive Time Synchronization and Frequency Channel Hopping for Wireless Sensor Networks (2012)

Duty cycling mote radio resources depends fundamentally on the ability of WSN nodes to share the same sense of time. If all nodes within a network are synchronized to the same clock, mote pairs can then be scheduled to only wake up when data transmissions need to occur. In such a scenario, motes can remain in a low power state while not actively transmitting data. The ability to schedule communications removes intra-network interference by ensuring that no two mote pairs are scheduled to transmit packets at the same time. Furthermore, communication in WSNs is challenged by multipath radio propagation and narrow-band interference. The IEEE802.15.4 standard divides the 2.4 GHz band into 16 transmission channels (or, narrow-band sub-frequencies) that can be used to mitigate communication challenges posed by external interference and multipath propagation. Improper channel selection can cause data to be lost during transmission, leading to the need to retransmit data, and manifesting itself in lower packet delivery and higher energy requirements. An option to address this time-varying behavior involves equipping WSNs with the ability to channel hop. In such deployments, motes within the network select a different channel every time a transmission occurs, rather than persistently transmitting information on a single channel. This report will: (1) show that TDMA-based synchronization and channel hopping can be achieved without the use of accurate crystal time sources, (2) investigate the explicit benefits of an optimized channel hopping controller, which selects the best possible single channel based on current state information, (3) implement and compare two realistic channel hopping schemes on a commonly available hardware platform, and (4) show TDMA-based communications can be modified to support both low-throughput, persistent sensing applications, while facilitating high-throughput traffic from mobile network agents.
Index mappings for multidimensional formulation of the DFT and convolution (1977)

The mapping of one-dimensional arrays into two- or higher dimensional arrays is the basis of the fast Fourier transform (FFT) algorithms and certain fast convolution schemes. This paper gives the general conditions for these mappings to be unique and cyclic, and then considers the application to discrete Fourier transform (DFT) and convolution evaluation.
Technocratic paradigm of environmental degradation inside the border of protective bioethical accents of theological encyclical “Laudato si” (2016)

Biotechnological domination of nature detect despotic tendencies of contemporary technocratic paradigm which reveals many serious concerns of ecological distortion and environmental degradation. Our world has become threatened by the industrial approach of absolute mastery over nature which is, ultimately, reduced only to the economical concept of the pragmatic utility, by instrumental use of nature, ignoring the fact of her inability of recovery. Problems of environmental dangers have grown from local to global problems ; from scientific and technical issues into the huge ethical problems ; from segmented ecological and environmental into complex bioethical and religious problems of further preservation of the Earth. Thatfor, environmental question can not be considered only from a technical- scientific or economic perspective. If the «homo technologicus» wants to remain «homo sapiens», he has to behave as «homo ecologicus». This article is going to point out some criticism and directions how to acchieve this. With this modest scientific judgment we attempt to point out the modern environmental risks and dangers which are necessarily indicateing the need for competence jurisdiction of ambiental bioethics integrated with the Christian ecotheology movement for fruitful contribution of their combined forces to provide bio-ethical and eco-theological stimulation for the enviroment protection. Development strategies should more think about survival dilemma of strong sustainable development, which should be transcended to inter-governance projects and include: ethical penetration into the economical-political- scientifical-biotechnological-cultural dimensions. The increase of scientific and technical power, above all nature, qualitativly determines otherwise human activity that requires an ethical responsibility. It must provoke conscious «conversion» and change of basic attitudes toward the world, to it's present and future and set up the moral limits to the exercise of technological power and industrial progress for proposing a new model of integral ecology.
Predawn and high intensity application of supplemental blue light decreases the quantum yield of PSII and enhances the amount of phenolic acids, flavonoids, and pigments in Lactuca sativa (2015)

To evaluate the effect of blue light intensity and timing, two cultivars of lettuce [Lactuca sativa cv. "Batavia" (green) and cv. "Lollo Rossa" (red)] were grown in a greenhouse compartment in late winter under natural light and supplemental high pressure sodium (SON-T) lamps yielding 90 (±10) μmol m(-2) s(-1) for up to 20 h, but never between 17:00 and 21:00. The temperature in the greenhouse compartments was 22/11°C day/night, respectively. The five light-emitting diode (LED) light treatments were Control (no blue addition), 1B 06-08 (Blue light at 45 μmol m(-2) s(-1) from 06:00 to 08:00), 1B 21-08 (Blue light at 45 μmol m(-2) s(-1) from 21:00 to 08:00), 2B 17-19 (Blue at 80 μmol m(-2) s(-1) from 17:00 to 19:00), and 1B 17-19 (Blue at 45 μmol m(-2) s(-1) from 17:00 to 19:00). Total fresh and dry weight was not affected with additional blue light; however, plants treated with additional blue light were more compact. The stomatal conductance in the green lettuce cultivar was higher for all treatments with blue light compared to the Control. Photosynthetic yields measured with chlorophyll fluorescence showed different response between the cultivars; in red lettuce, the quantum yield of PSII decreased and the yield of non-photochemical quenching increased with increasing blue light, whereas in green lettuce no difference was observed. Quantification of secondary metabolites showed that all four treatments with additional blue light had higher amount of pigments, phenolic acids, and flavonoids compared to the Control. The effect was more prominent in red lettuce, highlighting that the results vary among treatments and compounds. Our results indicate that not only high light level triggers photoprotective heat dissipation in the plant, but also the specific spectral composition of the light itself at low intensities. However, these plant responses to light are cultivar dependent.
Canal . Programa cde captación-fidelización (2001)

The specific problems of biostatistical evaluation of adjuvant therapy are discussed. These problems arise from the fact that the effect of adjuvant therapy is usually rather small; in particular, for many kinds of cancer it is smaller than the variability in prognosis among patients due to different prognostic factors. Knowledge about prognostic factors for a particular type of cancer is therefore an essential precondition for the correct planning of controlled clinical trials. The importance of prognostic factor studies is stressed and it is shown how results of such studies can be utilized for the design of efficient trials for adjuvant therapy assay. The results of the retrospective DOSAK study on carcinomas of the oral cavity are reported. Based on a sample of 1021 patients in this study, numerous prognostic factors were analysed by both univariate and multivariate statistical techniques. On the basis of these analyses, a prognostic index was developed which should be a valuable aid for the design of clinical trials.
A Novel Histone Acetyltransferase Inhibitor Modulating Gcn5 Network: Cyclopentylidene-[4-(4′-chlorophenyl)thiazol-2-yl)hydrazone (2008)

Acetylation is a key modulator of genome accessibility through decondensation of the chromatin structure. The balance between acetylation and opposite deacetylation is, in fact, a prerequisite for several cell functions and differentiation. To find modulators of the histone acetyltransferase Gcn5p, we performed a phenotypic screening on a set of newly synthesized molecules derived from thiazole in budding yeast Saccharomyces cerevisiae. We selected compounds that induce growth inhibition in yeast strains deleted in genes encoding known histone acetyltransferases. A novel molecule CPTH2, cyclopentylidene-[4-(4'-chlorophenyl)thiazol-2-yl)hydrazone, was selected based on its inhibitory effect on the growth of a gcn5Delta strain. We demonstrated a specific chemical-genetic interaction between CPTH2 and HAT Gcn5p, indicating that CPTH2 inhibits the Gcn5p dependent functional network. CPTH2 inhibited an in vitro HAT reaction, which is reverted by increasing concentration of histone H3. In vivo, it decreased acetylation of bulk histone H3 at the specific H3-AcK14 site. On the whole, our results demonstrate that CPTH2 is a novel HAT inhibitor modulating Gcn5p network in vitro and in vivo.
Characteristics of heat transfer in small disk enclosures at high rotation speeds (1990)

Experimental results are reported for heat transfer in small disk enclosures containing several 5.25-in-diameter disks and two symmetrical brushless DC motors mounted on a spindle. The air flow over the disk is probably turbulent at a rotation speed of more than 5400 r.p.m., and windage loss dominates the total rotation loss. Effective forced convection reduces the temperature increase inside the enclosure. There is not much temperature dependence on disk position, because heat generation in the enclosure is symmetrical. Track densities of more than 100 tr/mm are shown to be feasible as a result of the small thermal off-tracking and head position deviation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Collision model for vehicle motion prediction after light impacts (2008)

This article presents a collision model that predicts vehicle motions after a light impact. The focus of this work is on the characterisation of changes in vehicle kinematic states due to the impact; hence detailed analysis of vehicle component deformations is disregarded. Colliding vehicles are each modelled as rigid bodies with four degrees of freedom (longitudinal, lateral, yaw, and roll), which is different from the approach commonly used in the literature. The energy loss during impacts is accounted for through an empirical coefficient of restitution. In contrast to the conventional momentum-conservation-based method, the proposed approach takes tyre forces into account. Improved model prediction accuracy is demonstrated through numerical examples. The developed collision model is useful for the prediction of post-impact vehicle dynamics and the development of enhanced vehicle safety systems.
Design and Re-optimization Algorithms for Elastic Optical Networks (2016)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text L. Velasco and M. Ruiz, "Design and Re-optimization Algorithms for Elastic Optical Networks," in Optical Fiber Communication Conference, OSA Technical Digest (online) (Optica Publishing Group, 2016), paper M2K.1. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article