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Absorption spectroscopy is attractive for combustion diagnostics because it allows in-situ and calibration-free quantification of reactants/products and thermometry. However, spectra measured at atmospheric pressure in the near-infrared telecom range, where laser sources and optical components are readily available, suffer from strong water interference. Cavity-enhanced optical frequency comb spectroscopy...
The paper focuses on the current engineering practice on SMART (System Safety, Maintainability, Availability, Reliability, and Testability) engineering using Failure Modes, Effects and Criticality Analysis (FMECA) as the fundamental SMART knowledge base. The paper demonstrates General Atomics Aeronautical Systems' adaptation to the Department Of Defense's (DOD's) new Reliability and Maintainability...
We report on octave broadband supercontinuum generation from ultraviolet to near infrared wavelengths in the fundamental mode of a gas-filled novel low-loss anti-resonant hollow-core fiber having distinct transmission windows.
We measure broadband H2O and OH spectra in a flame using near-infrared cavity-enhanced Fourier transform optical frequency comb spectroscopy, we retrieve temperature and OH concentration, and compare water spectra to an improved line list.
An AC power standard for high voltages and high currents for power frequencies is presented. It consists of commercially available components and is traceable to the primary standards of PTB. A dedicated correction algorithm automatically corrects the systematic errors of the components and leads to uncertainties in the order of 0.004 % of the active power for voltages up to 220 kV / V3 and up to...
This paper describes the measuring systems, setup and results of an rms and peak ac high voltage comparison performed at PTB in 2015. The three measuring systems are based on different principles. VTT system is a compressed gas capacitor based voltage divider together with a sampling voltmeter and signal processing. PTB's systems are based on the measuring of loading current of high voltage compressed...
Double Planar Wire Arrays (DPWA), which consist of two parallel rows of wires, have previously demonstrated high radiation efficiency, compact size, and usefulness for various applications in experiments on a University-scale high-impedance Z-pinch generator1. Recently, we successfully performed two experimental campaigns with PWAs on the University of Michigan's low-impedance MAIZE (Linear Transformer...
The Alphasat satellite was launched on 25 July 2013. The Aldo Paraboni technology demonstration payload, funded by ASI under ESA's ARTES Programme, was embarked as an hosted payload on Alphasat. This Technology Demonstration Payload (identified as TDP5 and recently renamed “Aldo Paraboni”) was implemented under an ESA contract awarded in co-contractorship to Space Engineering and Thales Alenia Space...
In this paper the design of a voltage-mode switching mode amplifier in a 65-nm CMOS process in the GHz range is described. The amplifier can be operated with a rectangular drive signal with 50 % duty cycle up to 4 GHz and pseudo random bit sequences up to 4 GBit/s. The calibrated broadband PAE of the amplifier chip is 22 % at 2 GHz, 13 % at 3 GHz and 7 % at 4 GHz for a rectangular drive signal with...
Musical meter and attributes of the rhythmic feel such as swing, syncopation, and danceability are crucial when defining musical style. However, they have attracted relatively little attention from the Music Information Retrieval (MIR) community and, when addressed, have proven difficult to model from music audio signals. In this paper, we propose a number of audio features for modeling meter and...
A novel and important corpus of about 80,000 television and movie scripts from opensubtitles.com shows interesting large-scale patterns of narration in their vocabulary use. These patterns are interesting at the token level but not easily amenable for large scale data analysis. This paper describes a new method, "plot arcs," for describing and comparing structural elements of structure,...
We demonstrate detection of broadband high-temperature water spectra in a laminar, premixed methane/air flat flame using high-resolution near-infrared cavity-enhanced optical frequency comb spectroscopy incorporating a fast-scanning Fourier transform spectrometer.
Organic solar cells (OSC) are becoming an important alternative to standard inorganic ones since they have many intrinsic advantage, such as light weight, flexibility, and low fabrication costs. The use of plasmonic backcontact grating with nanometric pitch can enhance the absorption in the active layer of organic solar cell and consequently increase the power conversion efficiency. We realized P3HT:PCBM...
The identification of attributes attractive for users is essential for creating a positive user experience with a product. For this, Kano's method classifies customer needs into different categories. Besides the attractiveness, the attribute's importance for the customer might be also relevant for User Experience. Thus, we combine Kano's method and the conjoint analysis for the identification of attributes,...
Decision-making in early stages of product development affects product success essentially. For this reason, the professional handling and management of decisions in early development stages is necessary. To investigate current decision-making in industry, we conducted an interview study to quantify decision criteria, which decision makers from industry base their decisions on. Dependent on a list...
In recent years, several studies proposed the application of echo state networks (ESN) to adaptive reinforcement learning schemes for the control of artificial autonomous agents. Especially the actor-critic design (ACD) is a promising candidate for robotic systems with continuous state and action spaces, as was demonstrated in several studies using simple wheeled robots. In the present work, we investigate...
This paper describes the performance of a wideband HVDC reference divider. The divider concept is a shielded modular divider and it is intended for traceable calibration of HVDC measuring systems up to 1000 kV in customers' laboratories. The first priority in the design was the accuracy of HVDC measurements. In addition, the divider was designed to have wide bandwidth, both to enable measurement of...
This contribution presents a novel warping method, two-dimensional signal warping (2DSW), for tracking beat-to-beat changes in time intervals from electrocardiograms. To evaluate the efficiency of 2DSW to capture subtle changes in the QT interval we apply 2DSW to the Physionet QT database. It is shown that 2DSW allows highly accurate tracking of QRS-onset and T-end, which renders the method useful...
Phase and structural behaviour in the SmAlO3-TbAlO3 system has been studied in a whole concentration range by means of laboratory X-ray diffraction, in situ synchrotron powder diffraction and differential thermal analysis techniques. Formation of the continuous solid solution Sm1−xTbxAlO3 with orthorhombic perovskite structure has been established. Peculiarity of the solid solution is existence of...
The Viable System Model (VSM) is a functional model of organizational structures whose implementation results in a presumably viable system. Despite scientific arguments and successful implementations in organizations, the VSM is still not widely used in practice. A reason may be that the VSM as defined by Beer addresses only the structural domain of the control (management) system in an organization...
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